Switchgear Conductor Equipped With Corrosion Prevention And Electric Shock Accident Prevention Functions Through Harmful Gas Reduction

Abstract

The present invention relates to a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases, and more specifically, to a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases, wherein an adsorption cartridge is placed inside the switchboard, and the adsorption cartridge comprises a multi-stage pellet structure including a first pellet, a second pellet, and a third pellet each that reduces harmful gases, and an air circulation path is applied to allow air introduced into the adsorption cartridge to be dispersed and introduced into each of the first pellet, the second pellet, and the third pellet, thereby removing harmful gases, and control and display related to the current status of the switchboard and the adsorption cartridge are performed through a control unit.

Description

Technology Field

[0001] The present invention relates to a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases, and more specifically, to a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases, wherein an adsorption cartridge is placed inside the switchboard, and the adsorption cartridge comprises a multi-stage pellet structure including a first pellet, a second pellet, and a third pellet each that reduces harmful gases, and an air circulation path is applied to allow air introduced into the adsorption cartridge to be dispersed and introduced into each of the first pellet, the second pellet, and the third pellet, thereby removing harmful gases, and control and display related to the current status of the switchboard and the adsorption cartridge are performed through a control unit. Background Technology

[0003] Switchgear is a critical piece of power equipment responsible for distributing, controlling, and protecting equipment within the power system, and its interior is composed of various electrical components such as circuit breakers, lightning arresters, busbars, insulators, and transformers. Meanwhile, under normal operating conditions, the internal temperature of the switchgear is typically maintained at around 40°C to 50°C; however, if abnormal conditions such as overheating occur, components may undergo thermal decomposition or oxidation, potentially generating gases. Furthermore, switchgear is exposed to various external factors depending on the installation environment; in particular, in special environments such as hazardous materials treatment plants, waste disposal sites, and sewage treatment plants, harmful gases from the atmosphere can enter the switchgear, causing problems.

[0004] For example, switchboards installed in sewage treatment plants can be constantly exposed to harmful gases such as hydrogen sulfide (H2S), ammonia (NH3), and sulfur dioxide (SO2), which are primarily generated during the sewage treatment process; among these, hydrogen sulfide can be a major substance that has a fatal impact on the internal components of the switchboard. Therefore, if hydrogen sulfide gas enters the switchboard, it chemically reacts with copper busbars and various contact points to form a copper sulfide (Cu2S) film on the surface.

[0005] As such, copper sulfide films resulting from corrosion have very low conductivity, which increases contact resistance and causes localized heat generation, accelerating the corrosion reaction and ultimately leading to a vicious cycle resulting in fire. In addition, silver (Ag) plating used in circuit breaker contacts also reacts with hydrogen sulfide to form silver sulfide, which turns black and causes contact failure.

[0006] As a result, in areas with high levels of hazardous gas generation compared to general environments, the lifespan of switchboards may be significantly shortened due to internal conductor oxidation and damage to electrical components. For example, assuming the general lifespan of a switchboard is 20 years, the lifespan of a switchboard in a waste treatment plant may be reduced to 10 to 15 years.

[0007] Conventionally, to mitigate these corrosion problems, methods such as applying special anti-corrosion coatings to conductive parts or introducing positive pressure systems to block the inflow of external air were attempted. However, relying solely on existing passive ventilation or coating methods made it difficult to fundamentally prevent corrosion caused by gases that are generated in combination due to temperature and humidity changes inside the switchboard. Furthermore, there were structural limitations in monitoring the concentration of accumulated gases inside the switchboard in real time, predicting the lifespan of adsorption cartridges, and performing maintenance in a timely manner.

[0008] Therefore, there is a growing need for the development of integrated management technology that utilizes an adsorption cartridge installed directly inside the switchboard to adsorb and remove harmful gases while maximizing adsorption efficiency and preventing airflow deviations, and additionally provides functions such as notifying the replacement cycle of the harmful gas reduction pellets equipped in the adsorption cartridge or alerting about the internal power supply status. Prior art literature

[0010] Korean Registered Patent KR 10-1381848 B1 “Pressure gas discharge device for high-voltage enclosed switchboard” (March 31, 2014) Korean Registered Patent KR 10-1493432 B1 “Door for switchboard for protection from arc gas” (February 9, 2015) Korean Registered Patent KR 10-2215281 B1 “Switchboard for processing electrical fire gas detection events” (February 5, 2021) Korean Registered Patent KR 10-2552249 B1 “Pressure gas discharge device for switchboard” (July 3, 2023) Korean Registered Patent KR 10-1373864 B1 “Early detection device for electrical fires in high-voltage panels, low-voltage panels, motor control panels, and distribution panels” (March 6, 2014) Domestic Registered Patent KR 10-1588255 B1 “House-type switchboard with automatic door application using arc emission system and sensor” (January 19, 2016) The problem to be solved

[0011] The present invention provides a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases. More specifically, the invention provides a switchboard equipped with a function to prevent corrosion of conductive parts and electric shock accidents through the reduction of harmful gases, wherein an adsorption cartridge is placed inside the switchboard, and the adsorption cartridge comprises a multi-stage pellet structure including a first pellet, a second pellet, and a third pellet each that reduces harmful gases, and an air circulation path is applied to allow air introduced into the adsorption cartridge to be dispersed into the first pellet, the second pellet, and the third pellet respectively to remove harmful gases, and a control unit performs control and display related to the current status of the switchboard and the adsorption cartridge. means of solving the problem

[0013] To solve the above problem, a switchboard equipped with a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases comprises: an enclosure in which power equipment is placed; an adsorption cartridge coupled to one side of the enclosure to reduce harmful gases inside the switchboard; and a control unit that performs control related to the energizing status of the power equipment and the lifespan of the adsorption cartridge; wherein the adsorption cartridge comprises: an intake port positioned at one end of the adsorption cartridge in the horizontal direction that receives air from the lower vertical direction and guides it in the horizontal direction; an intake fan that circulates the air delivered from the intake port in the horizontal direction; a first inlet chamber positioned at the rear horizontal direction of the intake fan, into which a plurality of flow paths branch to deliver the incoming air to a first pellet, a second pellet, and a third pellet, respectively; and a first pellet positioned at the rear horizontal direction of the first inlet chamber that adsorbs harmful gases as air passes through it in the horizontal direction. A distribution panel is provided comprising: a lower air passage extending horizontally from the vertical lower portion of the first inlet chamber and guiding air horizontally through the vertical lower portion of the first pellet; a second pellet that adsorbs harmful gases as the air delivered through the lower air passage passes horizontally; an upper air passage extending horizontally from the vertical upper portion of the first inlet chamber and guiding air horizontally through the vertical upper portions of the first pellet and the second pellet; a third pellet that adsorbs harmful gases as the air delivered through the upper air passage passes horizontally; and an outlet disposed at the horizontal end of the adsorption cartridge and discharging air that has been combined by passing through each of the first pellet, the second pellet, and the third pellet to the vertically upward portion.

[0014] In one embodiment of the present invention, the adsorption cartridge may include: a first exhaust chamber formed at the horizontal rear of the first pellet to collect purified air that has passed through the first pellet; a side exhaust duct extending horizontally from the rear side in the front-rear direction of the first exhaust chamber to guide the purified air collected in the first exhaust chamber to the outlet via the rear in the front-rear direction of the second pellet and the third pellet; a second exhaust chamber formed at the horizontal rear of the second pellet to collect purified air that has passed through the second pellet; and a bottom exhaust duct extending horizontally from the vertical lower part of the second exhaust chamber to guide the purified air collected in the second exhaust chamber to the outlet via the vertical lower part of the third pellet. At this time, the discharge port may be configured such that the purified air of the first pellet guided through the side exhaust duct, the purified air of the second pellet guided through the lower exhaust duct, and the purified air of the third pellet introduced through the third pellet are combined and diverted vertically upward to be discharged to the outside.

[0015] In one embodiment of the present invention, the adsorption cartridge may include: a second inlet chamber that extends vertically upward from the horizontal end of the lower air passage and is formed horizontally in front of the second pellet, guiding air delivered through the lower air passage horizontally to the second pellet; and a third inlet chamber that extends vertically downward from the horizontal end of the upper air passage and is formed horizontally in front of the third pellet, guiding air delivered through the upper air passage horizontally to the third pellet.

[0016] In one embodiment of the present invention, the first inlet chamber comprises: a first airflow dispersion plate installed vertically upward from the intake fan side toward the first pellet side in a vertical upper region of the first inlet chamber to guide a portion of the air flowing into the first inlet chamber through the intake fan to the upper air passage; and a second airflow dispersion plate installed vertically downward from the intake fan side toward the first pellet side in a vertical lower region of the first inlet chamber to guide a portion of the air flowing into the first inlet chamber through the intake fan to the lower air passage; and the remaining air can flow straight horizontally into the first pellet through the space between the first airflow dispersion plate and the second airflow dispersion plate.

[0017] In one embodiment of the present invention, the first inlet chamber may include a first air dispersion plate having a plurality of through holes formed therein, which is positioned in front of the first pellet in the horizontal direction and allows air introduced into the first inlet chamber to be evenly distributed into the first pellet so as to suppress a drift phenomenon in which air flows only along a specific path within the first pellet. Specifically, the first air dispersion plate comprises: a first through hole formed in the central region between a line extending horizontally from one end of the first airflow dispersion plate formed in the first inlet chamber and a line extending horizontally from one end of the second airflow dispersion plate formed in the first inlet chamber; and a second through hole formed in an upper region vertically above a line extending horizontally from one end of the first airflow dispersion plate and a lower region vertically below a line extending horizontally from one end of the second airflow dispersion plate, respectively; wherein the second through hole may be formed larger than the first through hole.

[0018] In one embodiment of the present invention, when the direction perpendicular to one side of the switchboard to which the adsorption cartridge is coupled is defined as the front-rear direction, the one side of the switchboard to which the adsorption cartridge is coupled includes a cartridge coupling part that is open so that the front side of the adsorption cartridge is exposed and inserted and fixed. Among the front side of the adsorption cartridge exposed through the cartridge coupling part, the area corresponding to the first pellet, the second pellet, and the third pellet is formed of a transparent material so that the first pellet, the second pellet, and the third pellet, respectively, can be visually confirmed from outside the switchboard. At this time, each of the first pellet, the second pellet, and the third pellet may have a detachable structure that allows for individual withdrawal and insertion in the front-rear direction from the outside of the one side of the switchboard to which the adsorption cartridge is coupled while the adsorption cartridge is inserted and fixed in the cartridge coupling part. In particular, the adsorption cartridge is physically isolated from the energized part inside the switchboard while being inserted and fixed in a cartridge coupling part formed on one side of the switchboard, and each of the first pellet, second pellet, and third pellet can be replaced by individually withdrawing and inserting them in the front-rear direction from the outside of the side of the switchboard to which the adsorption cartridge is coupled while the power equipment of the switchboard is energized. Additionally, each of the first pellet, second pellet, and third pellet includes an adsorbent that reduces harmful gases containing one or more of hydrogen sulfide (H2S), sulfur dioxide (SO2), nitrogen dioxide (NO2), and chlorine (Cl2) that are heavier than the average molecular weight of air, and the cartridge coupling part may be formed below the midpoint in the vertical direction of the switchboard.

[0019] In one embodiment of the present invention, the switchboard may include an optical sensor that detects a color change of each of the first pellet, the second pellet, and the third pellet in order to detect a color change according to the adsorption progress of the first pellet, the second pellet, and the third pellet. Accordingly, the control unit derives color information for each of the first pellet, the second pellet, and the third pellet based on optical information received from the optical sensor provided in the switchboard, and derives life information for each of the first pellet, the second pellet, and the third pellet based on the color information, and the life information may be determined according to the color information and divided into a plurality of stages including one or more of pre-adsorption, adsorption progress, and end of life.

[0020] In one embodiment of the present invention, the switchboard may further include one or more of: a hazardous gas sensor disposed inside the switchboard to detect hazardous gas concentration; a temperature and humidity sensor disposed inside the switchboard to detect temperature and humidity; and a current detection sensor to detect the current status of a busbar inside the switchboard. At this time, the control unit may control the intake fan according to a corrosion risk index derived based on the hazardous gas concentration, temperature, and humidity sensed for the switchboard (or sensing information received from one or more of the hazardous gas sensor, temperature and humidity sensor, and current detection sensor), and specifically, the intake fan may be controlled to one of a plurality of operating grades including one or more of standby, preventive operation, purification operation, and emergency operation.

[0021] In one embodiment of the present invention, the distribution board may include one or more of a high-voltage board, a low-voltage board, a motor control board, and a distribution board.

[0022] In one embodiment of the present invention, the switchboard may include an LED bar that emits a first color when the switchboard is energized and emits a second color different from the first color when it is de-energized, thereby indicating the energized state of the switchboard so that it can be visually identified from outside the switchboard.

[0023] In one embodiment of the present invention, the switchboard includes a seismic isolation device installed at the bottom of the switchboard to dampen external vibrations; and the seismic isolation device may include: a support frame; a spherical floating support member coupled to the support frame; an elastic spring disposed around the perimeter of the spherical floating support member to dampen vertical displacement; a central frame disposed above the elastic spring and having a horizontal elastic spring embedded therein to dampen horizontal displacement; an upper frame disposed above the central frame and moving horizontally together with the switchboard; a spherical floating receiving member disposed above the support frame and accommodating a spherical floating structure member of the spherical floating support member; and a spherical floating support member comprising a spherical floating structure member disposed to be movable in a 360-degree direction within the spherical floating receiving member.

[0024] In one embodiment of the present invention, the seismic isolation device further comprises a switchboard lower base disposed on the upper part of the upper frame; and a displacement allowable portion is formed at the center of each of the upper frame and the switchboard lower base, formed by drilling a hole larger than the diameter of the spherical floating support portion, so that when horizontal displacement occurs, the upper frame and the switchboard lower base can move without interference with the spherical floating support portion. Effects of the invention

[0026] According to one embodiment of the present invention, air is dispersed and introduced into the first pellet, the second pellet, and the third pellet, respectively, through the lower air passage and the upper air passage branching from the first inlet chamber within the adsorption cartridge, and purified air is combined with the outlet through the side exhaust duct and the lower exhaust duct, thereby achieving the effect of maximizing the efficiency of removing harmful gases through a multi-stage adsorption process.

[0027] According to one embodiment of the present invention, by forming a second inlet chamber and a third inlet chamber at the horizontal ends of the lower air passage and the upper air passage to stably guide air horizontally to the second pellet and the third pellet, it is possible to achieve the effect of inducing a uniform gas adsorption reaction across the entire area of ​​each pellet.

[0028] According to one embodiment of the present invention, by installing an inclined first airflow dispersion plate and a second airflow dispersion plate within a first inlet chamber and arranging a first air dispersion plate having first and second through holes of different sizes, the effect of suppressing the drift phenomenon in which air introduced from an intake fan is concentrated in a specific path and evenly dispersing and introducing it into a first pellet, a second pellet, and a third pellet can be achieved to improve adsorption performance.

[0029] According to one embodiment of the present invention, by exposing one side of the front of the adsorption cartridge with a transparent material through the cartridge coupling part of the distribution board, the condition of the first pellet, the second pellet, and the third pellet can be visually checked from the outside, and the first pellet, the second pellet, and the third pellet can be safely and individually removed and inserted for replacement without the risk of electric shock even when the power equipment of the distribution board is energized.

[0030] According to one embodiment of the present invention, by forming a cartridge coupling part containing an adsorbent for reducing harmful gases below a vertical midpoint of the distribution panel, harmful gases such as hydrogen sulfide (H2S) and sulfur dioxide (SO2), which are heavier than air, can be quickly and effectively removed by utilizing the physical characteristic that harmful gases are concentrated in the lower part.

[0031] According to one embodiment of the present invention, by providing an optical sensor that detects a color change of each of the first pellet, the second pellet, and the third pellet, the control unit can actively derive lifespan information (before adsorption, adsorption in progress, end of lifespan, etc.) based on color information, thereby enabling an administrator to identify the replacement time in a timely manner and increase the convenience of maintenance.

[0032] According to one embodiment of the present invention, a corrosion risk index is derived by synthesizing the sensing information of a hazardous gas sensor, a temperature and humidity sensor, and a current detection sensor placed inside a distribution panel, and accordingly, by variably controlling the intake fan into standby, preventive operation, purification operation, emergency operation, etc., it is possible to achieve the effect of safely protecting the interior while reducing unnecessary power consumption.

[0033] According to one embodiment of the present invention, by installing an LED bar on the outside of a distribution board and controlling it to emit a first color when energized and a second color when de-energized, it is possible to intuitively identify whether the internal bus bar is energized without opening the distribution board door, thereby enabling the prevention of electric shock accidents in advance.

[0034] According to one embodiment of the present invention, by transmitting a voice notification when the door is opened while the power is on, or by constantly displaying a text notification such as "Power On / Power Outage" through a display, a display operator can intuitively identify whether the internal busbar is powered on without opening the distribution panel door, thereby enabling the prevention of electric shock accidents in advance.

[0035] According to one embodiment of the present invention, a seismic isolation device is included to absorb vertical and horizontal shocks when an earthquake or external vibration occurs, thereby preventing damage to power equipment placed inside. Brief explanation of the drawing

[0037] FIG. 1 illustrates a switchboard equipped with a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases according to one embodiment of the present invention, and a seismic isolation device that prevents damage to power equipment in the switchboard when an earthquake or external vibration occurs. FIG. 2 shows a front view of an adsorption cartridge according to one embodiment of the present invention. FIG. 3 illustrates a plan view of an adsorption cartridge according to one embodiment of the present invention. FIG. 4 shows a right-side view of an adsorption cartridge according to one embodiment of the present invention. FIG. 5 shows a left side view of an adsorption cartridge according to one embodiment of the present invention. FIG. 6 schematically illustrates the internal structure of an adsorption cartridge according to one embodiment of the present invention. FIG. 7 illustrates a detailed view of a first air dispersion plate according to one embodiment of the present invention. FIG. 8 illustrates a detailed view of a second air dispersion plate according to one embodiment of the present invention. FIG. 9 illustrates a cartridge coupling part and a pellet extraction structure of an adsorption cartridge according to one embodiment of the present invention. FIG. 10 illustrates the airflow inside a switchboard due to harmful gas reduction according to one embodiment of the present invention. FIG. 11 illustrates a method for deriving life information of an optical sensor and an adsorption cartridge according to one embodiment of the present invention. FIG. 12 illustrates matters related to intake fan control according to the corrosion risk index according to one embodiment of the present invention. FIG. 13 illustrates the role and installation location of each sensor according to one embodiment of the present invention. FIG. 14 illustrates an LED bar according to one embodiment of the present invention. FIGS. 15 to 17 illustrate a seismic isolation device according to an embodiment of the present invention. Specific details for implementing the invention

[0038] Hereinafter, various embodiments and / or aspects are disclosed with reference to the drawings. For illustrative purposes, numerous specific details are disclosed in the following description to aid in a general understanding of one or more aspects. However, it will also be recognized by those skilled in the art that these aspects may be practiced without such specific details. The following description and the accompanying drawings describe specific exemplary aspects of one or more aspects in detail. However, these aspects are exemplary, and some of the various methods in the principles of the various aspects may be used, and the description is intended to include all such aspects and their equivalents.

[0040] In addition, various aspects and features will be presented by a system that may include a number of devices, components and / or modules, etc. It should also be understood and recognized that various systems may include additional devices, components and / or modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in relation to the drawings.

[0041] Terms such as "examples," "examples," "aspects," and "examples" as used herein may not be interpreted as implying that any aspect or design described is superior or more advantageous than other aspects or designs. Terms used below, such as "part," "component," "module," "system," and "interface," generally refer to computer-related entities and may refer, for example, to hardware, a combination of hardware and software, or software.

[0042] Additionally, the terms “comprising” and / or “comprising” should be understood to mean that the relevant feature and / or component is present, but not to exclude the presence or addition of one or more other features, components and / or groups thereof.

[0043] Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0044] Furthermore, in the embodiments of the present invention, all terms used herein, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0046] FIG. 1 illustrates a switchboard equipped with a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases according to one embodiment of the present invention.

[0048] As illustrated in FIG. 1, the switchboard having a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases may include: an enclosure in which power equipment is placed; an adsorption cartridge coupled to one side of the enclosure to reduce harmful gases inside the switchboard; and a control unit that performs control related to the energized state of the power equipment and the lifespan of the adsorption cartridge.

[0049] In addition, the above distribution panel may include one or more of a high-voltage panel, a low-voltage panel, a motor control panel, and a distribution panel.

[0051] For convenience of explanation, the direction perpendicular to one side of the outer casing (110) to which the adsorption cartridge (200) is attached is defined as the front-back direction, the direction parallel to the direction of gravity on a plane parallel to one side of the outer casing (110) to which the adsorption cartridge (200) is attached is defined as the vertical direction, and the direction perpendicular to the vertical direction is defined as the horizontal direction.

[0053] A switchboard (1) according to one embodiment of the present invention may include an enclosure (110) in which a power device (120) is placed, an adsorption cartridge (200) coupled to one side of the enclosure (110) to reduce harmful gas inside the switchboard (1), and a control unit (130) that performs control related to the power supply status of the power device (120) and the lifespan of the adsorption cartridge (200).

[0054] Specifically, the enclosure (110) is a closed enclosure forming the outer perimeter of the distribution board (1) and provides a space for housing power equipment (120) including circuit breakers, busbars, transformers, relays, etc. inside. For example, the enclosure (110) may be a rectangular structure, and a door may be formed on the front for a worker to access the internal power equipment (120).

[0056] Meanwhile, on one side of the above-mentioned enclosure (110), specifically in the lower portion of the door, a cartridge coupling portion (111), which is an opening for inserting and fixing the adsorption cartridge (200), may be formed. The cartridge coupling portion (111) has an open shape so that the front side of the adsorption cartridge (200) is exposed and inserted and fixed, thereby allowing the front side of the adsorption cartridge (200) to be visually confirmed from outside the distribution panel (1).

[0057] The above adsorption cartridge (200) is a device for adsorbing and removing harmful gases generated inside the outer casing (110) or introduced from the outside, and is inserted and fixed in a cartridge coupling part (111) formed on one side of the outer casing (110).

[0058] In addition, a first pellet (260), a second pellet (270), and a third pellet (280) for adsorbing and reducing harmful gases are arranged in multiple stages inside the adsorption cartridge (200), and harmful gases can be adsorbed by forcibly circulating air inside the distribution panel (1) by an intake fan (220) and passing it through each of the first pellet (260), second pellet (270), and third pellet (280). The specific internal structure and air circulation path of the adsorption cartridge (200) will be described later with reference to FIGS. 2 to 6.

[0060] The fact that the adsorption cartridge (200) is placed at the lower vertical end inside the switchboard (1) is due to the physical properties of the harmful gas to be removed inside the switchboard (1). Specifically, hydrogen sulfide (H2S), which is mainly generated in sewage treatment plants, etc., has a molecular weight of about 34.08 g / mol, which is about 18 to 20% heavier than the average molecular weight of air, about 28.97 g / mol. Similarly, major harmful gases that can cause corrosion in internal parts of the switchboard (1), such as sulfur dioxide (SO2), nitrogen dioxide (NO2), and chlorine (Cl2), also have a density heavier than that of air.

[0061] Therefore, since harmful gases such as the above tend to concentrate in the lower vertical direction inside the distribution panel (1), if the adsorption cartridge (200) is placed at the lower vertical direction, it is possible to directly inhale air and adsorb it in an area where the concentration of harmful gases is relatively high.

[0062] In addition, the adsorption cartridge (200) has a structure that sucks in air mixed with harmful gas from the 'vertical lower' through the intake port (210) and forcibly discharges purified air through the first pellet (260), second pellet (270), and third pellet (280) to the 'vertical upper' through the discharge port (290), thereby making the direction of natural convection, which is the downward settling of harmful gas due to its weight, and the direction of forced convection, which is the downward suction and upward discharge of the adsorption cartridge (200), the air circulation efficiency can be improved.

[0064] Meanwhile, the control unit (130) is a component that performs overall monitoring, control, and display functions of the distribution board (1) and may include one or more processors and one or more memories. Specifically, the control unit (130) may be installed on the front door of the enclosure (110).

[0065] The above control unit (130) internally includes a control device including one or more of a PCB (Printed Circuit Board) and a PLC (Programmable Logic Controller), and externally, a display may be provided so that an operator can check the operating status from outside the distribution board (1). The display may visually display one or more of the following: hazardous gas concentration, temperature, humidity sensing values, the lifespan of the adsorption cartridge (200), the operating status, and the energization status of the power device (120).

[0066] In one embodiment of the present invention, the control unit (130) may emit a voice notification such as "Power is on" when the door is opened while power is on, or may constantly display a notification such as "Power is on" or "Power outage" through a display.

[0067] In this way, the operator can intuitively determine the concentration of harmful gases, temperature and humidity, current status, and the operating status of the adsorption cartridge (200) inside the distribution panel (1) through the display without opening the door from the front of the distribution panel (1).

[0068] A distribution board (1) according to one embodiment of the present invention may include one or more of a high-voltage board, a low-voltage board, a motor control board, and a distribution board.

[0069] According to one embodiment of the present invention, an adsorption cartridge (200) is placed at the lower vertical portion inside a distribution board (1), and the adsorption cartridge (200) sucks in air mixed with harmful gases inside the distribution board (1) from the bottom and discharges purified air, in which harmful gases have been adsorbed and removed through a multi-stage pellet structure, to the top, thereby utilizing the physical characteristic that harmful gases heavier than air are concentrated at the bottom, so that the efficiency of removing harmful gases can be improved.

[0070] In addition, the control unit (130) can variably control the intake fan (220) of the adsorption cartridge (200) by integrating one or more of the sensing information from the harmful gas sensor (520), the temperature and humidity sensor (530), the current detection sensor (540), and the optical sensor (510), and by displaying the lifespan information of each of the first pellet (260), the second pellet (270), and the third pellet (280) on the display, thereby enabling the manager to easily identify the environmental conditions inside the distribution panel (1) and the replacement time of the adsorption cartridge (200) from the outside, thereby increasing the convenience of maintenance.

[0072] In Figures 2 to 5 below, the detailed structure of the adsorption cartridge (200) will be described in detail.

[0074] FIG. 2 shows a front view of an adsorption cartridge according to one embodiment of the present invention, FIG. 3 shows a top view of an adsorption cartridge according to one embodiment of the present invention, FIG. 4 shows a right side view of an adsorption cartridge according to one embodiment of the present invention, and FIG. 5 shows a left side view of an adsorption cartridge according to one embodiment of the present invention.

[0076] As illustrated in FIGS. 2 to 5, the adsorption cartridge comprises: an intake port positioned at one end of the adsorption cartridge in the horizontal direction, receiving air from the lower vertical direction and guiding it in the horizontal direction; an intake fan that circulates the air delivered from the intake port in the horizontal direction; a first inlet chamber positioned at the rear horizontal direction of the intake fan, having a plurality of flow paths branched to deliver the introduced air to a first pellet, a second pellet, and a third pellet, respectively; a first pellet positioned at the rear horizontal direction of the first inlet chamber, adsorbing harmful gases as air passes through it in the horizontal direction; a lower air flow path extending horizontally from the lower vertical direction of the first inlet chamber and guiding air in the horizontal direction via the lower vertical direction of the first pellet; and a second pellet that adsorbs harmful gases as air delivered through the lower air flow path passes through it in the horizontal direction. It may include: an upper air passage extending horizontally from the vertical upper portion of the first inlet chamber and guiding air horizontally via the vertical upper portions of the first pellet and the second pellet; a third pellet that adsorbs harmful gases as the air delivered through the upper air passage passes horizontally; and an outlet disposed at the other horizontal end of the adsorption cartridge and discharging air that has been combined by passing through each of the first pellet, the second pellet, and the third pellet upward in the vertical direction.

[0077] Additionally, the adsorption cartridge may include: a first exhaust chamber formed at the horizontal rear of the first pellet to collect purified air that has passed through the first pellet; a side exhaust duct extending horizontally from the rear side in the front-rear direction of the first exhaust chamber to guide the purified air collected in the first exhaust chamber to the outlet via the rear in the front-rear direction of the second pellet and the third pellet; a second exhaust chamber formed at the horizontal rear of the second pellet to collect purified air that has passed through the second pellet; and a bottom exhaust duct extending horizontally from the vertical lower part of the second exhaust chamber to guide the purified air collected in the second exhaust chamber to the outlet via the vertical lower part of the third pellet.

[0078] In addition, the above-mentioned outlet can be configured so that the purified air of the first pellet guided through the side exhaust duct, the purified air of the second pellet guided through the lower exhaust duct, and the purified air of the third pellet introduced through the third pellet are combined and diverted vertically upward to be discharged to the outside.

[0079] Additionally, the adsorption cartridge may include: a second inlet chamber that extends vertically upward from the horizontal end of the lower air passage and is formed horizontally in front of the second pellet, guiding air delivered through the lower air passage horizontally to the second pellet; and a third inlet chamber that extends vertically downward from the horizontal end of the upper air passage and is formed horizontally in front of the third pellet, guiding air delivered through the upper air passage horizontally to the third pellet.

[0081] Specifically, the intake port (210) is formed at one end of the horizontal direction of the adsorption cartridge (200), that is, at the lower vertical direction of the side where the intake fan (220) is placed.

[0082] Specifically, the intake port (210) receives air mixed with harmful gases located in the vertical lower part of the internal space of the distribution panel (1) from the vertical lower part and performs the function of diverting and guiding the direction of the air to the horizontal direction where the intake fan (220) is positioned.

[0083] As described above, harmful gases heavier than air, such as hydrogen sulfide (H2S), settle and remain in the vertical lower part inside the distribution panel (1). Therefore, by forming the suction port (210) on the vertical lower side, air in the area with a relatively high concentration of harmful gases can be effectively introduced directly into the adsorption cartridge (200).

[0085] Next, the intake fan (220) is positioned at the rear of the intake port (210) in the horizontal direction, so that the air introduced through the intake port (210) can be forcibly circulated in the horizontal direction. Specifically, the intake fan (220) can be seen from the front on the left side of the adsorption cartridge (200), and a circular fan blade can be positioned with the horizontal direction as the axis of rotation. More specifically, it can be variably controlled by the control unit (130) according to the corrosion risk index described later, and this will be described later.

[0087] A filter (236) for removing dust and foreign substances from the incoming air may be placed on the horizontal front side of the intake fan (220). The filter (236) is configured to be replaceable and can be replaced at regular intervals, and can perform the function of preventing foreign substances such as dust from adhering to the first pellet (260), second pellet (270), and third pellet (280) inside the adsorption cartridge (200), thereby preventing a decrease in adsorption performance.

[0088] The air passing through the intake fan (220) moves in a horizontal direction and flows into the first inlet chamber (230). The first inlet chamber (230) is an empty space located at the horizontal rear of the intake fan (220), and may be a space where one flow path branches into multiple flow paths inside the adsorption cartridge (200). Referring to the front view of FIG. 2, the first inlet chamber (230) is located at the horizontal rear of the intake fan (220) and at the horizontal front of the first pellet (260), and may correspond to a space interposed between the upper air flow path (320) and the lower air flow path (310) in the vertical direction.

[0090] The air introduced into the first inlet chamber (230) can be branched into three independent flow paths described below and distributed in parallel to the first pellet (260), the second pellet (270), and the third pellet (280), respectively. Specifically, the three flow paths branched from the first inlet chamber (230) may include a first flow path that proceeds straight horizontally from the first inlet chamber (230) toward the first pellet (260), a second flow path that proceeds vertically from the lower part of the first inlet chamber (230) toward the second pellet (270) via the lower air flow path (310), and a third flow path that proceeds vertically from the upper part of the first inlet chamber (230) toward the third pellet (280) via the upper air flow path (320).

[0092] The above first flow path is a path through which a portion of the air branched from the first inlet chamber (230) travels in a straight horizontal direction and flows into the first pellet (260). In the first flow path, the first pellet (260) is positioned at the horizontal rear of the first inlet chamber (230), and the air traveling in a straight horizontal direction from the first inlet chamber (230) can flow into the first pellet (260) via the first air dispersion plate (233).

[0093] The first air dispersion plate (233) is a plate-shaped member disposed between the first inlet chamber (230) and the first pellet (260), and has a plurality of through holes formed therein so that air introduced from the first inlet chamber (230) is evenly distributed and introduced across the front surface of the first pellet (260).

[0095] The air passing through the first air dispersion plate (233) penetrates the interior of the first pellet (260) in a horizontal direction and comes into contact with the adsorbent filled in the first pellet (260), thereby chemically adsorbing and removing harmful gases such as hydrogen sulfide (H2S) contained in the air. The purified air from which harmful gases have been removed passes through the first pellet (260) in a horizontal direction and flows into and is collected in the first exhaust chamber (410) formed at the rear of the first pellet (260) in a horizontal direction.

[0096] Specifically, the first exhaust chamber (410) may correspond to an empty space formed at a position adjacent to the rear of the first pellet (260) in the horizontal direction and simultaneously adjacent to the rear of the second pellet (270) in the front-rear direction.

[0097] The purified air collected in the first exhaust chamber (410) is guided to the outlet (290) through a side exhaust duct (420) that extends horizontally from the rear side of the first exhaust chamber (410) in the front-rear direction.

[0098] Specifically, the side exhaust duct (420) may correspond to a passage that starts from the rear side in the front-rear direction of the first exhaust chamber (410), passes horizontally through the rear in the front-rear direction of the second pellet (270) and the third pellet (280), and extends to the discharge port (290).

[0099] That is, the side exhaust duct (420) serves as a bypass passage that guides the purified air passing through the first pellet (260) to the outlet (290) by bypassing the rear outer side of the second pellet (270) and the third pellet (280). At this time, since the purified air inside the side exhaust duct (420) is transported in a state physically isolated from the air inside the second pellet (270) and the third pellet (280), the air already purified by the first pellet (260) can be prevented from being remixed with the unpurified air of the second pellet (270) or the third pellet (280).

[0100] In this way, the air flow path of the first Euro is composed of an intake port (210) → intake fan (220) → first inlet chamber (230) → first air dispersion plate (233) → first pellet (260) → first exhaust chamber (410) → side exhaust duct (420) → outlet (290).

[0102] The second airway is a path through which a portion of the air branched from the first inlet chamber (230) flows downward in the vertical direction and then enters the second pellet (270) via the lower airway (310). Specifically, the lower airway (310) is a flat passage extending horizontally from the vertical lower part of the first inlet chamber (230), and can guide air horizontally through the vertical lower part of the first pellet (260). That is, the lower airway (310) corresponds to a passage passing horizontally under the bottom surface of the first pellet (260), and guides the air branched downward in the vertical direction from the first inlet chamber (230) to pass horizontally through the lower part of the first pellet (260) and be delivered to the second pellet (270).

[0103] At the horizontal end of the lower air passage (310), that is, at the point where air passing through the vertical lower part of the first pellet (260) reaches, a second inlet chamber (240) extending vertically upward is formed. Specifically, the second inlet chamber (240) may correspond to an empty space formed in the horizontal front of the second pellet (270).

[0104] Air moving horizontally through the lower air passage (310) is diverted vertically upward in the second inlet chamber (240) and dispersed across the horizontal front surface of the second pellet (270). Meanwhile, a second air dispersion plate (234) may be placed between the second inlet chamber (240) and the second pellet (270), and air is evenly dispersed and introduced across the front surface of the second pellet (270) through a plurality of through holes formed in the second air dispersion plate (234).

[0106] The air passing through the second air dispersion plate (234) penetrates the interior of the second pellet (270) in a horizontal direction and comes into contact with the adsorbent filled in the second pellet (270), thereby adsorbing and removing harmful gases. The purified air passing through the second pellet (270) flows into and is collected in the second exhaust chamber (430) formed at the rear horizontal direction of the second pellet (270). Specifically, the second exhaust chamber (430) may correspond to an empty space located at the rear horizontal direction of the second pellet (270).

[0107] The purified air collected in the second exhaust chamber (430) is guided to the outlet (290) through a lower exhaust duct (440) that extends horizontally from the vertical lower part of the second exhaust chamber (430). Specifically, the lower exhaust duct (440) may be a passage that starts from the vertical lower part of the second exhaust chamber (430), passes horizontally through the vertical lower part of the third pellet (280), and extends to the outlet (290).

[0108] That is, the lower exhaust duct (440) serves as a bypass passage that guides the purified air passing through the second pellet (270) to the outlet (290) by bypassing it horizontally under the bottom surface of the third pellet (280). Similar to the side exhaust duct (420), the purified air inside the lower exhaust duct (440) is transported in a state where it is physically isolated from the air inside the third pellet (280), so that the air already purified by the second pellet (270) is prevented from being remixed with the unpurified air of the third pellet (280).

[0109] Consequently, the air flow path of the second Euro is configured as follows: intake port (210) → intake fan (220) → first intake chamber (230) → lower air passage (310) → second intake chamber (240) → second air dispersion plate (234) → second pellet (270) → second exhaust chamber (430) → lower exhaust duct (440) → outlet (290).

[0111] The third airway is a path through which a portion of the air branched from the first inlet chamber (230) is directed vertically upward and then flows into the third pellet (280) via the upper airway (320). Referring to the front view of FIG. 2, the upper airway (320) is a flat passage extending horizontally from the vertical upper part of the first inlet chamber (230), and guides the air horizontally to the front of the third pellet (280) by passing through the vertical upper part of the first pellet (260) and then additionally passing through the vertical upper part of the second pellet (270).

[0112] That is, the upper air passage (320) is a passage that passes horizontally over the upper surface of the first pellet (260) and the second pellet (270), and serves to deliver air branched vertically upward from the first inlet chamber (230) to the third pellet (280) located at the furthest position horizontally inside the adsorption cartridge (200).

[0113] At the horizontal end of the upper air passage (320), that is, at the point where air passing through the vertical upper portion of the first pellet (260) and the second pellet (270) reaches, a third inlet chamber (250) extending vertically downward is formed. Referring to the plan view of FIG. 3, the third inlet chamber (250) may correspond to an empty space formed in the horizontal front portion of the third pellet (280).

[0114] Air moving horizontally through the upper air passage (320) is diverted downward in the vertical direction in the third inlet chamber (250) and dispersed across the horizontal front surface of the third pellet (280). A third air dispersion plate (235) may be placed between the third inlet chamber (250) and the third pellet (280), and air is evenly dispersed and introduced across the front surface of the third pellet (280) through a plurality of through holes formed in the third air dispersion plate (235).

[0115] The air passing through the third air dispersion plate (235) penetrates the interior of the third pellet (280) in a horizontal direction and comes into contact with the adsorbent filled in the third pellet (280), thereby adsorbing and removing harmful gases. Since the third pellet (280) is positioned closest to the outlet (290) inside the adsorption cartridge (200), the purified air passing through the third pellet (280) flows directly into the interior space of the outlet (290) from the horizontal rear of the third pellet (280) without passing through a separate exhaust duct.

[0116] That is, unlike the purified air of the first pellet (260) passing through the side exhaust duct (420) and the purified air of the second pellet (270) passing through the lower exhaust duct (440) to reach the outlet (290), the purified air of the third pellet (280) can join directly to the outlet (290).

[0117] Consequently, the air flow path of the third Euro consists of an intake port (210) → intake fan (220) → first inlet chamber (230) → upper air passage (320) → third inlet chamber (250) → third air dispersion plate (235) → third pellet (280) → outlet (290).

[0119] The above-mentioned discharge port (290) is positioned at the other end of the adsorption cartridge (200) in the horizontal direction, that is, at the end opposite to where the suction port (210) is located. Referring to the front view of FIG. 2, purified air from which harmful gases have been removed can be joined to the discharge port (290) by passing through each of the first, second, and third channels.

[0120] Specifically, the purified air of the first pellet (260) guided through the side exhaust duct (420), the purified air of the second pellet (270) guided through the lower exhaust duct (440), and the purified air of the third pellet (280) that is directly introduced through the third pellet (280) are combined inside the outlet (290). The combined purified air is diverted upward in the vertical direction from the outlet (290) and discharged into the vertical upper space inside the distribution board (1). This lower suction and upper discharge structure can contribute to improving air circulation efficiency by aligning the direction of natural convection caused by the downward sedimentation of harmful gases with the direction of forced convection of the adsorption cartridge (200), as previously described in FIG. 1.

[0122] As such, according to one embodiment of the present invention, the adsorption cartridge (200) has a structural feature having three parallel flow paths and three pellets, thereby enabling the following technical effects.

[0123] Specifically, the adsorption cartridge (200) adopts a multi-stage pellet structure of a first pellet (260), a second pellet (270), and a third pellet (280), and by introducing a structure that disperses air in parallel to each of the first pellet (260), second pellet (270), and third pellet (280) through three independent flow paths branching from the first inlet chamber (230), the total contact area between the harmful gas and the adsorbent can be increased compared to a structure that passes all air through a single pellet.

[0124] Specifically, in a single pellet structure, the entire air introduced by the intake fan (220) passes through only one pellet in the horizontal direction, so the opportunity for contact with the adsorbent is limited by the cross-sectional area and depth of the pellet, and as the pellet layer becomes deeper, contact with the pellet is uneven due to the occurrence of drifting phenomena caused by the formation of airflow, whereas in the present invention, the entire air is dispersed among three pellets, so the air flow rate borne by each pellet is reduced, and as a result, the air velocity inside each pellet is lowered, increasing the residence time with the adsorbent and allowing the adsorption reaction to proceed more sufficiently.

[0125] In addition, a structure in which three pellets are arranged in parallel can reduce the pressure applied to the entire adsorption cartridge (200). Specifically, since flow resistance due to friction occurs as air passes through the gaps between the adsorbent particles in a pellet filled with adsorbent, if the entire air is passed through a single pellet, the flow velocity increases and the pressure drop becomes greater.

[0126] On the other hand, if air is dispersed among three pellets, the flow rate passing through each pellet is reduced to approximately one-third, so the pressure drop in each pellet is reduced, and consequently, the static pressure capacity required for the intake fan (220) is lowered, so a smaller and quieter fan can be adopted and the power consumption of the fan can be reduced.

[0127] In addition, the adsorption progress of each pellet can be managed individually through a structure in which the first pellet (260), second pellet (270), and third pellet (280) each receive air through an independent air passage and discharge purified air through an independent exhaust path. Specifically, the air entering the first pellet (260) through the first air passage flows straight in a horizontal direction from the first inlet chamber (230), thus taking the shortest path, and the pressure from the intake fan (220) is transmitted relatively directly, so the amount of air entering may be greater compared to the other second pellet (270) and third pellet (280).

[0128] On the other hand, the air flowing into the second pellet (270) and the third pellet (280) through the second and third euros may have its flow velocity reduced by flow resistance as it passes through relatively long passages called the lower air passage (310) and the upper air passage (320), respectively.

[0130] Accordingly, the first pellet (260) adsorbs a relatively large amount of harmful gas compared to the second pellet (270) and the third pellet (280), so the rate of depletion of the adsorbent can be the fastest. This differential depletion characteristic enables a maintenance method in which only the pellets with depleted adsorbent are selectively replaced, rather than replacing the entire adsorption cartridge (200) at once.

[0131] In addition, by providing three independent inlet chambers (first inlet chamber (230), second inlet chamber (240), and third inlet chamber (250)) and three independent exhaust paths (side exhaust duct (420), bottom exhaust duct (440), and direct discharge) in each of the three Euros, cross-contamination in which purified air passing through one pellet is remixed with unpurified air of another pellet can be prevented. Specifically, purified air passing through the first pellet (260) passes through the side exhaust duct (420) in a physically isolated state behind the second pellet (270) and the third pellet (280) and reaches the outlet (290), and purified air passing through the second pellet (270) passes through the bottom exhaust duct (440) in a physically isolated state behind the third pellet (280) and reaches the outlet (290).

[0132] In this way, the harmful gas removal effect in each pellet is maintained independently, and the concentration of harmful gas in the purified air that finally joins at the outlet (290) can be maintained at a level that maximizes the adsorption effect in each pellet.

[0134] As such, according to one embodiment of the present invention, air is distributed and introduced in parallel into the first pellet (260), the second pellet (270), and the third pellet (280) respectively through the lower air passage (310) and the upper air passage (320) branched from the first inlet chamber (230) within the adsorption cartridge (200), and the purified air of each pellet is combined into the outlet (290) without cross-contamination through the side exhaust duct (420) and the lower exhaust duct (440), thereby maximizing the efficiency of removing harmful gases through a multi-stage parallel adsorption process, while reducing the pressure drop of the entire adsorption cartridge (200) and enabling individual replacement of each pellet, thereby improving the economic efficiency of maintenance.

[0135] In addition, by forming a second inlet chamber (240) and a third inlet chamber (250) at the horizontal ends of the lower air passage (310) and the upper air passage (320) to stably guide air horizontally to the second pellet (270) and the third pellet (280), it is possible to achieve the effect of inducing a uniform gas adsorption reaction across the entire area of ​​each pellet.

[0137] FIG. 6 schematically illustrates the internal structure of an adsorption cartridge according to one embodiment of the present invention.

[0139] As shown in FIG. 6, the adsorption cartridge (200) may have three structures each comprising an inlet chamber, an air dispersion plate, and a pellet.

[0140] Specifically, the first air dispersion plate (233), the second air dispersion plate (234), and the third air dispersion plate (235) are plate-shaped members disposed between the corresponding inlet chamber and the pellet, and a plurality of through holes are formed so that air introduced from the inlet chamber can be evenly dispersed across the front surface of the pellet.

[0141] In other words, each air dispersion plate can suppress the phenomenon of air drifting, where air flows only along specific paths within the pellet, by dispersing the airflow so that the air passing through the through holes comes into even contact with the adsorbent particles inside the pellet across the entire area.

[0142] In addition, each of the first pellet (260), second pellet (270), and third pellet (280) is a member filled with an adsorbent inside, and can be configured such that the front and rear surfaces are formed as a mesh or porous structure that allows air to pass through in the horizontal direction.

[0143] The above-mentioned adsorbent is a solid substance capable of chemically reacting with harmful gases to adsorb and remove them, as an example, potassium permanganate (KM n It may include O4).

[0144] In one embodiment of the present invention, the adsorbent may be composed of a material having the characteristic of changing color upon adsorption with a harmful gas to be reduced. For example, the adsorbent may be potassium permanganate, which changes color while oxidizing and decomposing hydrogen sulfide (H2S) through an oxidation reaction when in contact with hydrogen sulfide (H2S).

[0146] In one embodiment of the present invention, a filter (236) may be included, and the filter (236) may be located in the horizontal front of the intake fan (220), and the location is not limited to any one.

[0148] For example, an intake fan (220) may be positioned at the horizontally forward side from one end of the adsorption cartridge (200) toward the other end, and a filter (236) may be positioned in the horizontally forward side of the intake fan (220).

[0149] Specifically, the filter (236) is a plate-shaped filtering member positioned in the horizontal direction in front of the intake fan (220) and can physically capture and remove foreign substances, such as dust and fine particles, contained in the air entering through the intake port (210).

[0150] In addition, the filter (236) can protect the intake fan (220) from dust and the like, thereby reducing the risk of fire caused by fan motor overload.

[0151] In one embodiment of the present invention, the filter (236) is configured to be replaceable so that it can be removed from the outside and replaced at regular intervals.

[0153] According to one embodiment of the present invention, a filter (236), an intake fan (220), a first inlet chamber (230), a first air dispersion plate (233), a first pellet (260), a first exhaust chamber (410), a second air dispersion plate (234), a second pellet (270), a second exhaust chamber (430), a third air dispersion plate (235), a third pellet (280), and an outlet (290) are arranged sequentially along the horizontal direction from the front to the rear of the adsorption cartridge (200), and an upper air passage (320), a lower air passage (310), a side exhaust duct (420), and a lower exhaust duct (440) are formed in the form of passages on the upper and lower vertical sides of these components, thereby enabling a multi-stage adsorption structure including three independent parallel passages and three pellets to be realized within the limited volume of the cartridge case.

[0155] In contrast to conventional gas adsorption devices for switchboards that adopt a structure in which a single adsorbent is filled into a single pellet and can only exhibit adsorption performance for specific harmful gases, the adsorption cartridge (200) applied to the switchboard (1) of the present invention can simultaneously reduce different types of harmful gases that exist in combination depending on the installation environment of the switchboard.

[0156] Specifically, the adsorption cartridge (200) has a multi-stage pellet structure of a first pellet (260), a second pellet (270), and a third pellet (280), so that the same type of adsorbent may be filled in each of the first pellet (260), the second pellet (270), and the third pellet (280), or different types of adsorbents may be filled in each depending on the type and composition of harmful gases generated in the installation environment of the distribution panel (1).

[0157] For example, different types of harmful gases such as hydrogen sulfide (H₂S), sulfur dioxide (SO2), and nitrogen dioxide (NO2) may be generated in a sewage treatment plant, and for this purpose, in the case of a distribution panel (1) installed in the sewage treatment plant, the first pellet (260) contains potassium permanganate (KM) which has excellent adsorption performance for hydrogen sulfide (H₂S). n O₄) impregnated activated alumina is filled, the second pellet (270) is filled with acid-impregnated activated carbon with excellent adsorption performance for ammonia (NH₃), and the third pellet (280) can be filled with alkali-impregnated activated carbon with excellent adsorption performance for sulfur dioxide (SO₂) or nitrogen dioxide (NO₂).

[0158] According to one embodiment of the present invention, by utilizing a multi-stage pellet structure and individually filling each pellet with an adsorbent targeting different harmful gases, various types of harmful gases that occur in combination in the installation environment of the distribution panel (1) can be effectively reduced simultaneously, and even when the installation environment changes, the combination of adsorbents in each pellet can be changed in response to the type of harmful gas that mainly occurs in that environment.

[0160] FIG. 7 illustrates a detailed view of a first air dispersion plate according to one embodiment of the present invention.

[0162] As illustrated in FIG. 7, the first inlet chamber comprises: a first airflow dispersion plate installed vertically upward from the intake fan side toward the first pellet side in the vertical upper region of the first inlet chamber to guide a portion of the air that has entered the first inlet chamber through the intake fan to the upper air passage; and a second airflow dispersion plate installed vertically downward from the intake fan side toward the first pellet side in the vertical lower region of the first inlet chamber to guide a portion of the air that has entered the first inlet chamber through the intake fan to the lower air passage; and the remaining air can flow straight horizontally into the first pellet through the space between the first airflow dispersion plate and the second airflow dispersion plate.

[0163] In addition, the first inlet chamber may include a first air dispersion plate having a plurality of through holes formed therein to suppress the phenomenon of air flowing only along a specific path within the first pellet, wherein the air introduced into the first inlet chamber is evenly dispersed and introduced into the first pellet.

[0164] Additionally, the first air dispersion plate comprises: a first through hole formed in the central region between a line extending horizontally from one end of the first airflow dispersion plate formed in the first inlet chamber and a line extending horizontally from one end of the second airflow dispersion plate formed in the first inlet chamber; and a second through hole formed in an upper region vertically above the line extending horizontally from one end of the first airflow dispersion plate and a lower region vertically below the line extending horizontally from one end of the second airflow dispersion plate, respectively, wherein the second through hole may be formed larger than the first through hole.

[0166] As shown in FIG. 7(a), a first airflow dispersion plate (231) and a second airflow dispersion plate (232) may be installed as a pair inside the first inlet chamber (230).

[0167] Specifically, the first airflow dispersion plate (231) is installed in a vertically upward direction from the intake fan (220) side toward the first pellet (260) side in the vertically upper region of the first inlet chamber (230), and the second airflow dispersion plate (232) is installed in a vertically downward direction from the intake fan (220) side toward the first pellet (260) side in the vertically lower region of the first inlet chamber (230).

[0168] That is, the first airflow dispersion plate (231) and the second airflow dispersion plate (232) are arranged so that they are close to each other on the intake fan (220) side and spread apart as they go toward the first pellet (260) side, so that when viewed from the side, they can form a shape that is roughly a ‘V’ lying horizontally.

[0170] The first airflow dispersion plate (231) performs the function of guiding a portion of the air that has entered the first inlet chamber (230) through the intake fan (220) to the upper air passage (320) along a plate surface inclined vertically upward. Symmetrically, the second airflow dispersion plate (232) performs the function of guiding a portion of the air that has entered the first inlet chamber (230) to the lower air passage (310) along a plate surface inclined vertically downward. Meanwhile, through the space between the first airflow dispersion plate (231) and the second airflow dispersion plate (232), the remaining air can travel straight in the horizontal direction without being deflected by the first airflow dispersion plate (231) and the second airflow dispersion plate (232), pass through the first airflow dispersion plate (233), and then enter the first pellet (260).

[0172] Accordingly, the air discharged horizontally by the intake fan (220) can be divided into three directions within the first inlet chamber (230): a flow directed toward the upper air passage (320) by the first air flow dispersion plate (231), a flow directed toward the lower air passage (310) by the second air flow dispersion plate (232), and a flow directed toward the first pellet (260) by traveling straight horizontally between the first air flow dispersion plate (231) and the second air flow dispersion plate (232).

[0173] In one embodiment of the present invention, the ratio of the flow rates of air distributed to the upper air passage (320), the lower air passage (310), and the first pellet (260) can be adjusted by adjusting the inclination angle, installation position, and length of the first air flow dispersion plate (231) and the second air flow dispersion plate (232).

[0175] Meanwhile, the first air dispersion plate (233) is a plate-shaped member disposed between the first inlet chamber (230) and the first pellet (260), and has a plurality of through holes formed to suppress the phenomenon of air flowing only along a specific path within the first pellet (260) by ensuring that air introduced from the first inlet chamber (230) is evenly distributed and introduced across the front surface of the first pellet (260).

[0176] Referring to FIG. 7(b), the area of ​​the first air dispersion plate (233) can be divided into three sections based on the vertical direction: an upper section (A1), a central section (A2), and a lower section (A3), and the boundaries of the three sections are determined by the positions of the first airflow dispersion plate (231) and the second airflow dispersion plate (232) installed inside the first inlet chamber (230).

[0177] Specifically, the central area (A2) is defined as the area between a line extending horizontally from one end of the first airflow dispersion plate (231), i.e., the end on the intake fan (220) side, and a line extending horizontally from one end of the second airflow dispersion plate (232), i.e., the end on the intake fan (220) side.

[0178] The upper region (A1) is defined as an area vertically above a line extending horizontally from one end of the first airflow dispersion plate (231), and the lower region (A3) is defined as an area vertically below a line extending horizontally from one end of the second airflow dispersion plate (232).

[0179] In one embodiment of the present invention, a first through hole (233a) is formed in the central region (A2). The first through hole (233a) is an opening of a circular or similar shape, and a plurality of them may be distributed across the front surface of the central region (A2) with a roughly uniform size.

[0180] Conversely, a second through hole (233b) is formed in each of the upper region (A1) and lower region (A3). The second through hole (233b) is an opening of the same circular shape as the first through hole (233a) or a shape equivalent thereto, but is formed larger than the first through hole (233a).

[0181] That is, the diameter l1 of the first through hole (233a) may be smaller than the diameters l2 and l3 of the second through hole (233b).

[0183] In this way, by forming a relatively small first through hole (233a) in the central region (A2) of the first air dispersion plate (233) and forming a relatively large second through hole (233b) in the upper region (A1) and lower region (A3), it is possible to prevent the phenomenon of air flow being concentrated only in the central part of the first pellet (260).

[0184] Specifically, when air blown horizontally by the intake fan (220) flows into the first intake chamber (230), a significant portion of the air has a horizontal inertial force that is coaxial with the rotation axis of the intake fan (220), so it tends to concentrate toward the central area (A2) of the first air dispersion plate (233).

[0185] On the other hand, the upper region (A1) and lower region (A3) correspond to the remaining region after the air is deflected into the upper air passage (320) or lower air passage (310) by the first air flow dispersion plate (231) and the second air flow dispersion plate (232), so the air inflow pressure may be relatively lower compared to the central region (A2).

[0186] Therefore, if through holes of the same size are formed in the entire area of ​​the first air dispersion plate (233), excessive air will flow into the central area (A2) and insufficient air flow into the upper area (A1) and lower area (A3), so a biased flow phenomenon may occur in which air flows only in the central part within the first pellet (260), which causes the adsorbent located in the central part of the first pellet (260) to be consumed intensively, while the adsorbent located in the upper and lower parts remains in an unused state, which may cause a decrease in overall adsorption efficiency.

[0188] To prevent this, the first air dispersion plate (233) according to one embodiment of the present invention forms a first through hole (233a) with a small diameter in the central region (A2) where the air inflow pressure is relatively high to limit the amount of air inflow in that region, and forms a second through hole (233b) with a large diameter in the upper region (A1) and lower region (A3) where the air inflow pressure is relatively low to lower the resistance to air inflow in that region, thereby allowing air to be evenly dispersed and flowed in the vertical direction across the front surface of the first pellet (260).

[0189] Accordingly, the adsorbent inside the first pellet (260) comes into uniform contact with harmful gases across the upper, central, and lower parts, so that the chemical adsorption reaction proceeds evenly across the entire area of ​​the adsorbent, and the adsorption efficiency and the effective lifespan of the adsorbent can be improved.

[0191] In addition, in one embodiment of the present invention, the boundary between the upper region (A1) and the lower region (A3) of the first air dispersion plate (233) can be determined by the position of one end of the first airflow dispersion plate (231) and the second airflow dispersion plate (232).

[0192] That is, whether a first through hole (233a) or a second through hole (233b) is formed at a specific location of the first air dispersion plate (233) is determined by the position of one end of the first airflow dispersion plate (231) and the second airflow dispersion plate (232), and if the inclination angle or length of the first airflow dispersion plate (231) and the second airflow dispersion plate (232) is changed, the ratio of the central area (A2), the upper area (A1), and the lower area (A3) can be changed.

[0194] According to one embodiment of the present invention, a first air flow dispersion plate (231) and a second air flow dispersion plate (232) are installed in a first inlet chamber (230) and a first air dispersion plate (233) is arranged such that a relatively small first through hole (233a) is formed in the central area (A2) corresponding to one end of the first air flow dispersion plate (233), and a relatively large second through hole (233b) is formed in the upper area (A1) and lower area (A3). This suppresses the phenomenon of air flowing from the intake fan (220) being concentrated in a specific area of ​​the first pellet (260) and allows for the air to be evenly distributed across the entire surface of the first pellet (260), thereby producing an effect that improves the utilization rate and adsorption performance of the adsorbent.

[0196] FIG. 8 illustrates a detailed view of a second air dispersion plate according to one embodiment of the present invention.

[0198] Specifically, referring to FIG. 8(a), the second air dispersion plate (234) is a plate-shaped member disposed between the second inlet chamber (240) and the second pellet (270), and has a plurality of through holes formed to allow air introduced from the second inlet chamber (240) to be dispersed and introduced across the front surface of the second pellet (270).

[0199] However, referring to FIG. 8(b), unlike the structure of the first air dispersion plate (233) shown in FIG. 7(b), the second air dispersion plate (234) may have a third through hole (234a) of uniform size formed over the entire surface of the plate.

[0200] Specifically, the first air dispersion plate (233) has a relatively small first through hole (233a) in the central area (A2) and a relatively large second through hole (233b) in the upper area (A1) and lower area (A3), thereby arranging through holes of different sizes for each area, but the second air dispersion plate (234) does not have such differential configuration for each area and can have through holes of the same size formed throughout the entire area.

[0201] This is because in the second inlet chamber (240) positioned in the horizontal direction in front of the second air dispersion plate (234), there is no inclined air dispersion plate such as the first air dispersion plate (231) and the second air dispersion plate (232) installed in the first inlet chamber (230), so the dynamic pressure of the airflow reaching each area of ​​the first air dispersion plate (233) does not become uneven.

[0202] Specifically, in the second inlet chamber (240), air that has moved horizontally through the lower air passage (310) is introduced while changing direction to the vertical upward direction. As the air rises vertically inside the second inlet chamber (240), it is naturally dispersed, and the dynamic pressure distribution reaching the front of the second air dispersion plate (234) does not form a significant deviation as in the first air dispersion plate (233).

[0203] That is, since there is no shielding area by the first airflow dispersion plate (231) and the second airflow dispersion plate (232) in the second inlet chamber (240), a roughly uniform airflow distribution can be formed over the entire area of ​​the second air dispersion plate (234), and accordingly, uniform air dispersion over the front surface of the second pellet (270) can be achieved simply by forming through holes of a uniform size.

[0204] Meanwhile, the third air dispersion plate (235) positioned in the horizontal direction in front of the third pellet (280) has the same structure as the second air dispersion plate (234), so a detailed description thereof will be omitted.

[0206] As such, according to one embodiment of the present invention, the second air dispersion plate (234) and the third air dispersion plate (235) are positioned at the rear of the second inlet chamber (240) and the third inlet chamber (250), respectively, where there is no shielding area by the first airflow dispersion plate (231) and the second airflow dispersion plate (232). Therefore, uniform air dispersion across the front of the second pellet (270) and the third pellet (280) can be achieved simply by forming through holes of uniform size across the entire area, thereby enabling the effect of maintaining adsorption performance by suppressing drift phenomena while simplifying the structure.

[0208] FIG. 9 illustrates a cartridge coupling part and a pellet extraction structure of an adsorption cartridge according to one embodiment of the present invention.

[0210] As illustrated in FIG. 9, when the direction perpendicular to one side of the distribution board to which the adsorption cartridge is coupled is defined as the front-rear direction, the one side of the distribution board to which the adsorption cartridge is coupled includes a cartridge coupling part that is open so that the front side of the adsorption cartridge is exposed and inserted and fixed, and the area corresponding to the first pellet, the second pellet, and the third pellet among the front side of the adsorption cartridge exposed through the cartridge coupling part is formed of a transparent material so that the first pellet, the second pellet, and the third pellet can each be visually confirmed from outside the distribution board.

[0211] In addition, each of the first pellet, second pellet, and third pellet may have a detachable structure that allows for individual withdrawal and insertion in the front-rear direction from the outside of one side of the distribution panel to which the adsorption cartridge is coupled, while the adsorption cartridge is inserted and fixed in the cartridge coupling part.

[0212] In addition, the adsorption cartridge is physically isolated from the energized part inside the switchboard while being inserted and fixed in a cartridge coupling part formed on one side of the switchboard, and each of the first pellet, second pellet, and third pellet can be replaced by individually withdrawing and inserting them in the front-rear direction from the outside of the side of the switchboard to which the adsorption cartridge is coupled while the power device of the switchboard is energized.

[0214] FIG. 9(a) illustrates an initial state in which the first pellet (260), the second pellet (270), and the third pellet (280) have not yet been withdrawn, when viewed from one side of the outer casing (110) of the distribution board (1) with the adsorption cartridge (200) inserted and fixed in the cartridge coupling part (111), and FIG. 9(b) illustrates the process in which the first pellet (260), the second pellet (270), and the third pellet (280) are withdrawn in the forward and backward directions, respectively, to the outside of the distribution board (1) through the cartridge coupling part (111) at the same point in time.

[0216] Specifically, referring to FIG. 9 (a), a cartridge coupling part (111) is formed on one side of the outer casing (110). When the direction perpendicular to one side of the distribution board (1) to which the adsorption cartridge (200) is coupled is defined as the front-rear direction, the cartridge coupling part (111) is formed in an open shape on one side of the outer casing (110), specifically in the lower part of the door, so that the front side of the adsorption cartridge (200) is exposed and inserted and fixed.

[0217] Additionally, among the front side surfaces of the adsorption cartridge (200) exposed through the cartridge coupling portion (111), the areas corresponding to the first pellet (260), the second pellet (270), and the third pellet (280) may be formed of a transparent material.

[0218] Accordingly, a worker or manager can visually check the current color of the adsorbent filled in each of the first pellet (260), second pellet (270), and third pellet (280) through the transparent material area exposed through the cartridge coupling part (111) without opening the door from outside the distribution panel (1).

[0220] For example, the adsorbent filled in each of the first pellet (260), second pellet (270), and third pellet (280), such as potassium permanganate (KMnO4) impregnated activated alumina pellet, may have a color of purple or violet in the unused state as the chemical adsorption reaction with harmful gases proceeds, and may gradually change to brown or blackish-brown as oxidative decomposition proceeds by reacting with harmful gases such as hydrogen sulfide (H2S).

[0221] Therefore, the manager can visually determine the adsorption progress, or remaining lifespan, of the corresponding pellet through the color of the adsorbent. More specifically, the first pellet (260), into which air is directly introduced through the first flow path, adsorbs relatively more harmful gases compared to the second pellet (270) and third pellet (280) passing through the second and third flow paths, so the adsorbent of the first pellet (260) is consumed the fastest. By individually comparing and observing the degree of color change of each of the three pellets, the manager can intuitively determine from outside the distribution panel (1) which pellet's adsorbent needs to be replaced first.

[0223] Referring to FIG. 9(b), each of the first pellet (260), second pellet (270), and third pellet (280) may have a detachable structure that allows them to be individually withdrawn and inserted in the forward and backward directions from the outside of one side of the distribution board (1) while the adsorption cartridge (200) is inserted and fixed in the cartridge coupling part (111).

[0224] Specifically, each of the first pellet (260), second pellet (270), and third pellet (280) is configured as an individual case unit and can be individually slid out from the cartridge case of the adsorption cartridge (200) in the forward direction, that is, in a direction perpendicular to one side of the distribution board (1).

[0225] For example, the cartridge case of the adsorption cartridge (200) is provided with a slot-shaped receiving space into which each of the first pellet (260), the second pellet (270), and the third pellet (280) is inserted, and each pellet may be configured to be able to slide forward and backward with respect to the receiving space. That is, the individual case of each pellet is guided forward and backward along a guide rail or guide groove formed on the inner wall of the receiving space of the cartridge case, and when inserted, it is fixed by being engaged inside the receiving space, and when withdrawn, it slides forward and can come out of the distribution board (1) through the cartridge coupling part (111).

[0227] In addition, the adsorption cartridge (200) is physically isolated from the energized part inside the distribution board (1) while being inserted and fixed in the cartridge coupling part (111) formed on one side of the distribution board (1). For example, the energized part may correspond to a part that is at risk of electric shock when energized, such as a bus bar, circuit breaker contact, or transformer terminal inside the distribution board (1).

[0228] For example, a physical partition or separation distance is secured between the adsorption cartridge (200) and the current-carrying part, so that even if one side of the front of the adsorption cartridge (200) is exposed to the outside of the distribution board (1) through the cartridge coupling part (111), the cartridge coupling part (111) is physically isolated from the current-carrying part, thereby preventing the worker from coming into contact with the current-carrying part inside the distribution board (1) during the process of withdrawing or inserting a pellet through the cartridge coupling part (111).

[0230] As such, according to one embodiment of the present invention, each of the first pellet (260), the second pellet (270), and the third pellet (280) can be individually withdrawn and inserted in the forward and backward directions from the outside of one side of the distribution board (1) to replace the pellets even while the power equipment (120) of the distribution board (1) is energized. Therefore, since there is no need for a worker to access the inside of the distribution board (1) where the energized part is exposed by opening the door to replace the pellets, the risk of electric shock during replacement while the power is energized can be fundamentally eliminated.

[0232] Furthermore, by having a detachable structure in which the first pellet (260), second pellet (270), and third pellet (280) can be individually withdrawn and inserted, maintenance cost-effectiveness can be improved compared to a method of replacing the entire adsorption cartridge (200) at once.

[0233] Specifically, since the three pellets each process air of different flow rates through independent channels, the rate of adsorbent depletion varies by pellet. If the structure allows the entire adsorption cartridge (200) to be replaced as a whole, then when the adsorbent of the first pellet (260) is depleted and replacement is required, the second pellet (270) and the third pellet (280), which still have a significant remaining adsorption capacity, must also be replaced together. Consequently, the remaining capacity of the adsorbent is unnecessarily discarded, which may increase replacement costs.

[0234] On the other hand, as in one embodiment of the present invention, since only specific pellets for which the adsorbent has been depleted can be selectively replaced and the remaining pellets can be continuously used through a structure that allows each of the first pellet (260), second pellet (270), and third pellet (280) to be individually withdrawn and inserted, maintenance costs relative to the total amount of adsorbent used can be reduced.

[0236] FIG. 10 illustrates the airflow inside a switchboard due to harmful gas reduction according to one embodiment of the present invention.

[0238] As shown in FIG. 10, each of the first pellet, second pellet, and third pellet contains an adsorbent that reduces harmful gases including one or more of hydrogen sulfide (H2S), sulfur dioxide (SO2), nitrogen dioxide (NO2), and chlorine (Cl2) which are heavier than the average molecular weight of air, and the cartridge coupling portion may be formed below the midpoint in the vertical direction of the distribution panel.

[0240] Specifically, the adsorption cartridge (200) is positioned at the lower vertical end inside the outer casing (110) to effectively reduce harmful gases having a density heavier than air to be removed.

[0241] Specifically, the adsorption cartridge (200) and the cartridge coupling part (111) are formed below the midpoint in the vertical direction of the distribution board (1), so that air can be directly sucked in from the lower region where harmful gas having a density heavier than air settles.

[0242] First, harmful gases remaining in the vertical lower part inside the outer casing (110) can be introduced into the adsorption cartridge (200) from the vertical lower part through the intake port (210), and after the harmful gases are adsorbed inside, purified air can be discharged vertically upward through the discharge port (290).

[0243] Accordingly, the purified air discharged vertically upward through the discharge port (290) of the adsorption cartridge (200) reaches the upper space inside the outer casing (110), and then forms a convection flow that naturally descends vertically downward along the upper surface and inner walls of both sides of the outer casing (110), so that it reaches the vertically lower part inside the outer casing (110) again and can be re-introduced through the suction port (210) of the adsorption cartridge (200).

[0245] FIG. 11 illustrates a method for deriving life information of an optical sensor and an adsorption cartridge according to one embodiment of the present invention.

[0247] As illustrated in FIG. 11, the distribution board may include an optical sensor that detects a color change of each of the first pellet, the second pellet, and the third pellet in order to detect a color change according to the adsorption progress of the first pellet, the second pellet, and the third pellet.

[0248] In addition, the control unit derives color information for each of the first pellet, the second pellet, and the third pellet based on optical information received from an optical sensor provided in the distribution panel, and derives life information for each of the first pellet, the second pellet, and the third pellet based on the color information, and the life information is determined according to the color information and can be divided into a plurality of stages including one or more of pre-adsorption, adsorption in progress, and end of life.

[0250] An optical sensor (510) is installed inside the distribution board (1) of the adsorption cartridge (200), for example, in the cartridge case, to detect the surface color of the adsorbent filled in each pellet. Specifically, the optical sensor (510) may be positioned to individually detect a color change for each of the first pellet (260), the second pellet (270), and the third pellet (280).

[0251] In one embodiment of the present invention, an optical sensor (510) is installed at a position close to the surface of each pellet to individually detect the color of the adsorbent filled in the pellet. In one embodiment, a single optical sensor (510) may be installed to simultaneously detect the color of each pellet, but the number and location of installation are not limited thereto.

[0253] As described above, the adsorbent filled in each of the first pellet (260), second pellet (270), and third pellet (280) has the characteristic of gradually changing color as the chemical adsorption reaction with the harmful gas proceeds, and specifically, the color change may be greater as the adsorption of the adsorbent progresses.

[0255] The optical sensor (510) transmits optical information detecting the color of each of the first pellet (260), the second pellet (270), and the third pellet (280) to the control unit (130), and the control unit (130) derives color information for each of the first pellet (260), the second pellet (270), and the third pellet (280) based on the optical information received from the optical sensor (510). In addition, the control unit (130) derives life information for each of the first pellet (260), the second pellet (270), and the third pellet (280) based on the derived color information.

[0256] That is, lifespan information is determined according to color information and can be divided into multiple stages including one or more of pre-adsorption, adsorption in progress, and end-of-life.

[0258] For example, the 'pre-adsorption' stage is a state where the color of the adsorbent maintains the initial color of the unused state, i.e., purple or violet, and the adsorption reaction has not yet proceeded in earnest; the 'adsorption in progress' stage is a state where the color of the adsorbent has partially changed from the initial color, and the adsorption reaction is in progress but the adsorption capacity still remains; and the 'end of life' stage may correspond to a state where the color of the adsorbent has significantly changed to brown or dark brown, and the adsorption capacity has been mostly depleted and replacement is required.

[0260] In this way, the control unit (130) can determine whether the current state of each pellet corresponds to a stage among 'before adsorption', 'adsorption in progress', or 'end of life' based on optical information received from the optical sensor (510).

[0261] In addition, life information derived by the control unit (130) can be displayed through a display. Specifically, through the display, the manager can visually check the current life stage of each of the first pellet (260), second pellet (270), and third pellet (280) without opening the door. For example, if a pellet corresponding to the 'end of life' stage occurs, the control unit (130) can display a replacement alarm for the corresponding pellet through the display.

[0262] In this way, according to one embodiment of the present invention, an area corresponding to the first pellet (260), the second pellet (270), and the third pellet (280) on one side of the front of the adsorption cartridge is formed with a transparent material to allow visual confirmation of the colors of the first pellet (260), the second pellet (270), and the third pellet (280), and information regarding the colors of the first pellet (260), the second pellet (270), and the third pellet (280), or the lifespan of the pellets derived according to the colors, can be provided to the manager using an optical sensor (510).

[0264] FIG. 12 illustrates matters related to intake fan control according to the corrosion risk index according to one embodiment of the present invention.

[0266] As illustrated in FIG. 12, the switchboard includes one or more of: a hazardous gas sensor disposed inside the switchboard to detect hazardous gas concentration; a temperature and humidity sensor disposed inside the switchboard to detect temperature and humidity; and a current detection sensor to detect the current status of a busbar inside the switchboard. The control unit can control the intake fan according to a corrosion risk index derived based on sensing information received from one or more of the hazardous gas sensor, the temperature and humidity sensor, and the current detection sensor.

[0267] In addition, the control unit can control the intake fan to one of a plurality of operating grades including one or more of standby, preventive operation, purification operation, and emergency operation, according to a corrosion risk index derived based on the hazardous gas concentration, temperature, and humidity sensed for the switchboard.

[0269] As illustrated in FIG. 12 (a), sensing information detected from each of the harmful gas sensor (520), temperature and humidity sensor (530) and energization detection sensor (540) is transmitted to the control unit (130), and the control unit (130) derives a Corrosion Risk Index (CRI) based on the received sensing information and can control the intake fan (220) of the adsorption cartridge (200) according to the derived Corrosion Risk Index.

[0270] Specifically, as shown in FIG. 12(b), the corrosion risk index (CRI) can be calculated based on the hazardous gas concentration sensed by the hazardous gas sensor (520) and the humidity and temperature measured by the temperature and humidity sensor (530) as shown in the following formula.

[0271] Corrosion Risk Index = (Hazardous Gas Concentration × 1000) × (Humidity / 60) × (Temperature / 35)

[0273] The above control unit (130) can control the intake fan (220) to one of a plurality of operating grades including one or more of standby, preventive operation, purification operation and emergency operation according to the corrosion risk index (CRI) derived in this way.

[0274] For example, the ‘atmosphere’ grade corresponds to a state where the corrosion risk index is less than 1, and the hazardous gas concentration is less than 0.01 ppm, the temperature is less than 40℃, and the humidity is less than 70%. In the ‘atmosphere’ grade, the control unit (130) keeps the intake fan (220) in a stopped (OFF) state and continuously performs only monitoring by the hazardous gas sensor (520) and the temperature and humidity sensor (530).

[0275] As such, the ‘Standby’ rating may be an operating rating to suppress power consumption and noise by not unnecessarily operating the intake fan (220) because the harmful gas concentration, temperature, and humidity inside the distribution panel (1) are all at safe levels and the risk of corrosion is low.

[0277] Meanwhile, the ‘preventive operation’ grade may correspond to a state where the corrosion risk index is 1 or higher and less than 3, and the hazardous gas concentration is 0.01 ppm or higher and less than 0.05 ppm, or the rate of increase of the hazardous gas concentration is detected to exceed a preset threshold. In the ‘preventive operation’ grade, the control unit (130) operates the intake fan (220) for a preset first time, for example, 5 minutes, and then stops the operation. After stopping, the environmental conditions inside the distribution board (1) are reconfirmed by the hazardous gas sensor (520) and the temperature and humidity sensor (530) to re-determine the operation grade.

[0278] As such, the 'preventive operation' grade may correspond to an operation grade for suppressing the rise in concentration by operating the adsorption cartridge (200) early when an upward trend is detected, even though the concentration of harmful gases is not yet high.

[0280] Meanwhile, the 'purification operation' grade may correspond to a state where the corrosion risk index is 3 or higher and less than 6, and the hazardous gas concentration is 0.05 ppm or higher and less than 0.1 ppm. In the 'purification operation' grade, the control unit (130) may operate the intake fan (220) for a preset second time, for example, 10 minutes, then stop the operation, and after stopping, reconfirm the environmental conditions to re-evaluate the operation grade.

[0281] In this way, the above 'purification operation' grade may correspond to an operation grade for actively reducing the concentration of harmful gases by operating the adsorption cartridge (200) for a longer period of time when the concentration of harmful gases has entered a level that can cause corrosion of the internal parts of the distribution board (1).

[0283] Meanwhile, the 'emergency operation' grade may correspond to a state where the corrosion risk index is 6 or higher, and the hazardous gas concentration is 0.1 ppm or higher. In the 'emergency operation' grade, the control unit (130) may operate the intake fan (220) continuously for a preset third time, for example, 30 minutes, then stop the operation, and after stopping, re-check the environmental conditions to re-evaluate the operation grade.

[0284] In this way, the 'emergency operation' grade may correspond to an operation grade for operating the adsorption cartridge (200) for as long as possible to reduce the concentration of harmful gases as quickly as possible when the concentration of harmful gases reaches a dangerous level that can cause rapid corrosion damage to the internal parts of the distribution board (1).

[0286] In this way, the control unit (130) controls the intake fan (220) by gradually increasing its operating time according to the value of the corrosion risk index. This allows for the suppression of unnecessary operation of the intake fan (220) during normal times when the concentration of harmful gases is low, thereby minimizing power consumption and noise. Additionally, as the concentration of harmful gases increases, the operating time of the intake fan (220) is gradually expanded to increase the intensity of harmful gas removal, thereby enabling adaptive control. Furthermore, after the preset operating time has elapsed in each operating grade, the intake fan (220) is temporarily stopped, and the operating grade is re-determined by reconfirming environmental conditions using a sensor. Thus, if environmental conditions improve, it returns to a lower grade to prevent excessive fan operation, and if environmental conditions deteriorate, it switches to a higher grade to enable a rapid response.

[0287] That is, according to one embodiment of the present invention, by combining the sensing information of the harmful gas sensor (520), temperature and humidity sensor (530), and current detection sensor (540) placed inside the distribution board (1), a corrosion risk index (CRI) reflecting the combined effects of harmful gas concentration, humidity, and temperature is derived, and by variably controlling the intake fan (220) to one of a plurality of operating grades such as standby, preventive operation, purification operation, and emergency operation according to the derived corrosion risk index, unnecessary power consumption is suppressed when the corrosion risk is low, while the intensity of harmful gas removal is gradually strengthened as the corrosion risk increases, thereby producing the effect of safely protecting the power equipment (120) inside the distribution board (1).

[0289] Meanwhile, the aforementioned corrosion risk indices or hazardous gas concentrations by multiple grades, including standby, preventive operation, purification operation, and emergency operation, are exemplary figures and are not limited thereto.

[0291] FIG. 13 illustrates the role and installation location of each sensor according to one embodiment of the present invention.

[0293] As shown in FIG. 13, the harmful gas sensor (520) and the temperature and humidity sensor (530) are installed at the bottom of the distribution board (1), the current detection sensor (540) is installed in the current section of the distribution board (1), and the optical sensor (510) can be installed in the cartridge case of the adsorption cartridge (200).

[0295] FIG. 14 illustrates an LED bar according to an embodiment of the present invention.

[0297] As illustrated in FIG. 14, the switchboard may include an LED bar that emits a first color when the switchboard is energized and emits a second color different from the first color when it is de-energized, thereby indicating the energized state of the switchboard so that it can be visually identified from outside the switchboard.

[0299] Specifically, the LED bar (140) emits a first color when the distribution panel (1) is in an energized state and emits a second color different from the first color when it is in an energized state, so that the energized state of the distribution panel (1) can be visually identified from outside the distribution panel (1). For example, the first color may be red and the second color may be green.

[0300] In one embodiment of the present invention, the LED bar (140) is controlled by the control unit (130) in conjunction with the power detection sensor (540), and when the power detection sensor (540) detects a power supply state, the control unit (130) can make the LED bar (140) emit light in a first color, and when it detects a power outage state, it can make it emit light in a second color.

[0302] In this way, the LED bar (140) is installed on the front door of the enclosure (110), so that a worker can intuitively identify whether the power device (120) placed inside is energized by visually checking the light-emitting color of the LED bar (140) from outside the distribution panel (1) without opening the door of the distribution panel (1). Accordingly, the risk of an electric shock accident in which a worker inadvertently opens the door of the distribution panel (1) while it is energized and comes into contact with the internal energized part can be prevented in advance.

[0303] In addition, the control unit (130) can emit a voice notification such as "Power is on" when the door is opened while power is on, or constantly display a notification such as "Power is on" or "Power outage" through the display.

[0305] In one embodiment of the present invention, the distribution board (1) may further include a separate independent power source for driving the control unit (130) in the event of a power outage.

[0307] FIGS. 15 to 17 illustrate a seismic isolation device according to an embodiment of the present invention.

[0308] As illustrated in FIGS. 15 to 17, the switchboard (1) may further include a seismic isolation device (600) to protect the switchboard (1) from earthquakes or external vibrations. The seismic isolation device (600) is installed at the bottom of the switchboard (1) and can perform the function of dampening displacement occurring in the vertical and horizontal directions and returning to the original position after displacement occurs.

[0309] That is, the switchboard of the present invention may correspond to a switchboard equipped with a horizontal-vertical composite seismic damping (seismic isolation) device based on a spherical floating structure.

[0311] Specifically, the above seismic isolation device (600) may include a support frame (610), a spherical floating support (620), an elastic spring (630), a center frame (640), a horizontal elastic spring (650), a headless bolt (660), a ball (670), an upper frame (680), and a distribution board lower base (690).

[0312] The above support frame (610) is a steel frame that serves as the foundation of the floor surface where the seismic isolation device (600) is installed, and other components of the seismic isolation device (600) are seated on its upper surface to stably support the shaking of the seismic isolation device (600).

[0313] The spherical floating receiving portion (625) is positioned on the upper part of the support frame (610), and a predetermined space may be provided to accommodate the spherical floating structure portion (621) of the spherical floating support portion (620). For example, the spherical floating receiving portion (625) may include a predetermined space where a spherical floating structure portion (621) in the shape of a sphere can be seated.

[0314] The above spherical floating support member (620) includes a spherical floating structure member (621) and a spherical floating support shaft bolt (622), and the spherical floating structure member (621) of the spherical floating support member (620) can be coupled to the spherical floating receiving member (625) while the spherical floating receiving member (625) is coupled to the upper surface of the bottom part of the support frame (610).

[0315] In addition, the spherical floating support shaft bolt (622) of the spherical floating support member (620) can be fastened with a nut (624) with a washer (623) in between, after passing through the displacement allowable part (681) formed in the center of the seismic isolation device (600) and the displacement allowable part (681) formed on the upper surface of the lower base (690) of the distribution board.

[0317] In one embodiment of the present invention, the spherical floating structure (621) of the spherical floating support member (620) is seated on the spherical floating receiving member (625) coupled to the inner bottom surface of the support frame (610), and the spherical floating support shaft bolt (622) of the spherical floating support member (620) extends upward and sequentially penetrates the displacement allowable member (681) formed at the center of the inner side of the elastic spring (630), the center frame (640), the upper frame (680), and the lower base of the distribution board (690), and can be fastened with a nut (624).

[0319] In this way, in one embodiment of the present invention, the seismic isolation device (600) may further include a spherical floating receiving part (625) that is positioned on the upper part of the support frame (610) and accommodates the spherical floating structure part (621) of the spherical floating support part (620); and accordingly, the spherical floating structure part (621) is positioned so as to be movable in a 360-degree direction within the spherical floating receiving part (625), so that the horizontal displacement by the spherical floating support part (620) may be limited so as not to exceed a set allowable range.

[0320] In this way, the upper and lower parts of the spherical floating support member (620) are not forcibly fixed to the support frame (610) and the lower base of the distribution board (690), and the spherical floating structure part (621) of the spherical floating support member (620) is coupled so that it can move in a 360-degree direction within the spherical floating receiving part (625). Thus, when an earthquake occurs, the seismic isolation device (600) allows horizontal displacement of the upper structure, while a plurality of horizontal elastic springs (650) provide a restoring force, and the guide hole (681) at the upper and center and the spherical floating receiving part (625) at the lower limit the displacement limit, while allowing micro-rotation and horizontal follow movement in a 360-degree direction, thereby improving the actual degree of freedom of seismic isolation and return stability compared to the existing fixed central axis structure.

[0322] The elastic spring (630) is positioned around the spherical floating support shaft bolt (622) of the spherical floating support member (620) to dampen the impact when vertical displacement occurs and to return the seismic isolation device (600) to its original position after the displacement ends.

[0323] The central frame (640) is positioned above the elastic spring (630) to hold the elastic spring (630) to prevent it from coming off, and can move up and down together with the elastic spring (630) when vertical displacement occurs. Additionally, a semicircular groove (641) is machined around the upper part of the central frame (640) along the circumference to accommodate a ball (670) to be described later, and four holes may be formed to accommodate four horizontal elastic springs (650) in the front-rear and left-right directions.

[0325] The horizontal elastic spring (650) is inserted into each of the four holes formed in the central frame (640) to perform shock damping and return functions for horizontal loads. For example, when a small displacement occurs, the displacement allowable part (681) slides to respond to the displacement, and when additional displacement occurs, the horizontal elastic spring (650) is compressed to dampen the shock.

[0326] In addition, if the displacement limit of the horizontal elastic spring (650) is exceeded, the inner surface of the upper frame (680) made of steel acts as the displacement limit, thereby preventing the horizontal displacement of the seismic isolation device (600). After horizontal displacement occurs, it can be returned to its original position by the horizontal elastic spring (650).

[0328] The headless bolt (660) is configured to facilitate the assembly of the horizontal elastic spring (650) and to ensure the safety of the assembly worker. The horizontal elastic spring (650) can be inserted through a hole formed in the upper frame (680) and then finally fastened with the headless bolt (660).

[0330] The balls (670) are installed in a plurality (e.g., 12 or more) in a semicircular groove (641) machined on the upper part of the central frame (640), and can perform the function of allowing the upper frame (680) placed on top to move smoothly horizontally when horizontal displacement occurs. In one embodiment of the present invention, a plurality of balls (670) are installed around the entire circumference of a semicircular groove (641) machined in a full circle along the circumferential direction on the upper surface of the central frame (640), thereby inducing smooth sliding and ensuring stability.

[0332] The upper frame (680) is positioned on the upper part of the central frame (640) and can move horizontally together with the lower base of the distribution board (690) to offset the horizontal displacement when horizontal displacement occurs. The upper frame (680) may have four holes formed with screw taps into which the headless bolt (660) is inserted and fastened, so that four horizontal elastic springs (650) embedded in the central frame (640) can contact the inner surface of the upper frame (680).

[0333] In addition, in one embodiment of the present invention, the upper frame (680) may be formed in a cylindrical shape to wrap around the outer circumference of the central frame (640).

[0335] In one embodiment of the present invention, the upper frame (680) may be formed in a cylindrical shape. This is because when the horizontal elastic spring (650), which is installed on the central frame (640) and contacts the inner surface of the upper frame (680), receives elastic force, the inner surface of the upper frame (680) corresponding to the straight direction of the horizontal elastic spring (650) is located at the furthest distance, thereby allowing the horizontal elastic spring (650) to perform the function of maintaining the center without detaching. In addition, the shape can be matched with the cylindrical central frame (640) to unify the image, and since the seismic isolation device (600) is configured in a cylindrical shape, there is an advantage of not being restricted in direction during installation.

[0336] The above-mentioned switchboard lower base (690) is arranged to surround the outer side of the above-mentioned upper frame (680) and is coupled with the above-mentioned switchboard (1) so that it can move horizontally together with the above-mentioned upper frame (680) when horizontal displacement occurs.

[0338] In one embodiment of the present invention, the displacement-allowing portion (681) penetrating the center of the seismic isolation device (600) may be formed larger than the diameter of the spherical floating support shaft bolt (622) of the spherical floating support portion (620) to form a movement space. Accordingly, when a small displacement occurs in the horizontal direction, it does not interfere with the movement of the upper frame (680) and the lower base of the distribution board (690), and can perform a guide role when the central frame (640) and the elastic spring (630) move in the vertical direction.

[0339] For example, the displacement allowable portion (681) may be formed by drilling a hole in the center of the distribution board lower base (690), upper frame (680), and center frame (640) so that the spherical floating support shaft bolt (622) of the spherical floating support portion (620) can pass through it.

[0340] That is, the displacement allowable section (681) shown in FIGS. 15 to 17 may include a distribution board lower base displacement allowable section (not shown), an upper frame displacement allowable section (not shown), and a center frame displacement allowable section (not shown) formed in each of the distribution board lower base (690), upper frame (680), and center frame (640).

[0342] In this way, the switchboard (1) according to one embodiment of the present invention effectively dampens vertical and horizontal displacement caused by earthquakes or external vibrations through the seismic isolation device (600) and returns to its original position after the displacement occurs, thereby preventing damage to power equipment (120), etc. installed inside the switchboard (1) and ensuring stable operation.

[0344] Although the embodiments have been described above with reference to limited examples and drawings, those skilled in the art can make various modifications and variations from the description above. For example, appropriate results may be achieved even if the described techniques are performed in a different order than described, and / or if the components of the described system, structure, device, circuit, etc. are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents. Therefore, other implementations, other embodiments, and equivalents to the claims are also included within the scope of the claims set forth below. Explanation of the symbols

[0346] 1: Distribution panel 110: Enclosure 111: Cartridge coupling part 120: Power device 121: Lower base of switchboard seismic isolation device 130: Control unit 140: LED bar 200: Suction cartridge 210: Inlet 220: Intake fan 230: First inlet chamber 231: 1st Airflow Dispersing Plate 232: 2nd Airflow Dispersing Plate 233: First air dispersion plate 233a: First penetration hole 233b: Second penetration hole 234: Second air dispersion plate 235: Third air dispersion plate 236: Filter 240: 2nd Inlet Chamber 250: 3rd Inlet Chamber 260: 1st pellet 270: 2nd pellet 280: Third pellet 290: Discharge port 310: Lower air passage 320: Upper air passage 410: First exhaust chamber 420: Side exhaust duct 430: Second exhaust chamber 440: Lower exhaust duct 510: Optical sensor 520: Hazardous gas sensor 530: Temperature and humidity sensor 540: Power continuity sensor 600: Seismic isolation device 610: Support frame 620: Spherical floating support 621: Spherical floating structural part 622: Spherical floating support shaft bolt 623: Washer 624: Nut 625: Spherical floating receiving part 630: Elastic spring 640: Center frame 641: Semicircular groove 650: Horizontal elastic spring 660: Headless bolt 670: Ball 680: Upper frame 681: Displacement allowable section 690: Distribution panel lower base

Claims

Claim 1 A switchboard equipped with a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases, comprising: an enclosure in which power equipment is placed; an adsorption cartridge coupled to one side of the enclosure to reduce harmful gases inside the switchboard; and a control unit that performs control related to the energized state of the power equipment and the lifespan of the adsorption cartridge; wherein the adsorption cartridge comprises: an intake port positioned at one end in the horizontal direction of the adsorption cartridge and receiving air from the lower vertical direction to guide it in the horizontal direction; an intake fan that circulates the air delivered from the intake port in the horizontal direction; a first intake chamber positioned at the rear horizontal direction of the intake fan, into which a plurality of flow paths branch to deliver the incoming air to a first pellet, a second pellet, and a third pellet, respectively; a first pellet positioned at the rear horizontal direction of the first intake chamber to adsorb harmful gases as air passes through it in the horizontal direction; and an air extending horizontally from the lower vertical direction of the first intake chamber, passing through the lower vertical direction of the first pellet to... A distribution panel comprising: a lower air passage guiding air in a horizontal direction; a second pellet that adsorbs harmful gases as air delivered through the lower air passage passes horizontally; an upper air passage extending horizontally from the vertical upper portion of the first inlet chamber and guiding air in a horizontal direction via the vertical upper portion of the first pellet and the second pellet; a third pellet that adsorbs harmful gases as air delivered through the upper air passage passes horizontally; and an outlet disposed at the other horizontal end of the adsorption cartridge and discharging air that has been combined by passing through each of the first pellet, the second pellet, and the third pellet upward in a vertical direction. Claim 2 A switchboard according to claim 1, wherein the adsorption cartridge comprises: a first exhaust chamber formed at the horizontal rear of the first pellet to collect purified air passing through the first pellet; a side exhaust duct extending horizontally from the rear side in the front-rear direction of the first exhaust chamber to guide the purified air collected in the first exhaust chamber to the outlet via the rear in the front-rear direction of the second pellet and the third pellet; a second exhaust chamber formed at the horizontal rear of the second pellet to collect purified air passing through the second pellet; and a lower exhaust duct extending horizontally from the vertical lower of the second exhaust chamber to guide the purified air collected in the second exhaust chamber to the outlet via the vertical lower of the third pellet. Claim 3 In claim 2, the discharge port is a distribution panel in which the purified air of the first pellet guided through the side exhaust duct, the purified air of the second pellet guided through the lower exhaust duct, and the purified air of the third pellet introduced through the third pellet are combined and diverted vertically upward to be discharged to the outside. Claim 4 A switchboard according to claim 1, wherein the adsorption cartridge comprises: a second inlet chamber extending vertically upward from the horizontal end of the lower air passage and formed in the horizontal front of the second pellet, guiding air delivered through the lower air passage horizontally to the second pellet; and a third inlet chamber extending vertically downward from the horizontal end of the upper air passage and formed in the horizontal front of the third pellet, guiding air delivered through the upper air passage horizontally to the third pellet. Claim 5 A distribution panel according to claim 1, wherein the first inlet chamber comprises: a first airflow dispersion plate installed vertically upward from the intake fan side toward the first pellet side in a vertical upper region of the first inlet chamber to guide a portion of the air flowing into the first inlet chamber through the intake fan to the upper air passage; and a second airflow dispersion plate installed vertically downward from the intake fan side toward the first pellet side in a vertical lower region of the first inlet chamber to guide a portion of the air flowing into the first inlet chamber through the intake fan to the lower air passage; wherein the remaining air flows horizontally straight into the first pellet through the space between the first airflow dispersion plate and the second airflow dispersion plate. Claim 6 A switchboard according to claim 1, wherein the first inlet chamber is positioned in front of the first pellet in the horizontal direction and includes a first air dispersion plate having a plurality of through holes formed therein to suppress a drift phenomenon in which air flowing only along a specific path within the first pellet is evenly dispersed and introduced into the first inlet chamber. Claim 7 In claim 1, when the direction perpendicular to one side of the switchboard to which the adsorption cartridge is coupled is defined as the front-rear direction, the one side of the switchboard to which the adsorption cartridge is coupled includes a cartridge coupling portion that is open so that the front side of the adsorption cartridge is exposed and inserted and fixed, and the area corresponding to the first pellet, the second pellet, and the third pellet among the front side of the adsorption cartridge exposed through the cartridge coupling portion is formed of a transparent material so that each of the first pellet, the second pellet, and the third pellet can be visually confirmed from outside the switchboard. Claim 8 A switchboard according to claim 7, wherein each of the first pellet, second pellet, and third pellet has a detachable structure that allows the adsorption cartridge to be individually withdrawn and inserted in the front-rear direction from the outside of one side of the switchboard to which the adsorption cartridge is coupled, while the adsorption cartridge is inserted and fixed in the cartridge coupling part. Claim 9 In claim 7, each of the first pellet, second pellet, and third pellet comprises an adsorbent that reduces harmful gases including one or more of hydrogen sulfide (H2S), sulfur dioxide (SO2), nitrogen dioxide (NO2), and chlorine (Cl2) that are heavier than the average molecular weight of air, and the cartridge coupling portion is formed below the midpoint in the vertical direction of the switchboard. Claim 10 The switchboard according to claim 1, wherein the switchboard comprises an optical sensor that detects a color change of each of the first pellet, the second pellet, and the third pellet in order to detect a color change according to the adsorption progress of the first pellet, the second pellet, and the third pellet. Claim 11 A switchboard according to claim 1, wherein the control unit derives color information for each of the first pellet, the second pellet, and the third pellet based on optical information received from an optical sensor provided in the switchboard, derives life information for each of the first pellet, the second pellet, and the third pellet based on the color information, and the life information is determined according to the color information and is divided into a plurality of stages including one or more of pre-adsorption, adsorption in progress, and end of life. Claim 12 In claim 1, the switchboard comprises one or more of: a hazardous gas sensor disposed inside the switchboard for detecting hazardous gas concentration; a temperature and humidity sensor disposed inside the switchboard for detecting temperature and humidity; and a current detection sensor for detecting the current status of a busbar inside the switchboard; and the control unit controls the intake fan according to a corrosion risk index derived based on sensing information received from one or more of the hazardous gas sensor, the temperature and humidity sensor, and the current detection sensor. Claim 13 In claim 1, the switchboard comprises one or more of a high-voltage panel, a low-voltage panel, a motor control panel, and a distribution panel. Claim 14 In claim 6, the first air dispersion plate comprises: a first through hole formed in a central area between a line extending horizontally from one end of a first airflow dispersion plate formed in the first inlet chamber and a line extending horizontally from one end of a second airflow dispersion plate formed in the first inlet chamber; and a second through hole formed in an upper area vertically above the line extending horizontally from one end of the first airflow dispersion plate and a lower area vertically below the line extending horizontally from one end of the second airflow dispersion plate, respectively, wherein the second through hole is formed larger than the first through hole. Claim 15 A switchboard according to claim 1, wherein the adsorption cartridge is physically isolated from the energized part inside the switchboard while being inserted and fixed in a cartridge coupling part formed on one side of the switchboard, and each of the first pellet, second pellet, and third pellet can be individually withdrawn and inserted in the front-rear direction from the outside of one side of the switchboard to which the adsorption cartridge is coupled while the power device of the switchboard is energized. Claim 16 A switchboard according to claim 1, wherein the control unit controls the intake fan to one of a plurality of operating grades including one or more of standby, preventive operation, purification operation, and emergency operation according to a corrosion risk index derived based on hazardous gas concentration, temperature, and humidity sensed for the switchboard. Claim 17 The switchboard according to claim 1, wherein the switchboard comprises an LED bar that emits a first color when the switchboard is in an energized state and emits a second color different from the first color when it is in a de-energized state, thereby indicating the energized state of the switchboard so that it can be visually identified from outside the switchboard. Claim 18 The switchboard according to claim 1, wherein the switchboard comprises a seismic isolation device installed at the bottom of the switchboard to dampen vibrations caused by the outside; and the seismic isolation device comprises: a support frame; a spherical floating support member coupled to the support frame; an elastic spring disposed around the perimeter of the spherical floating support member to dampen vertical displacement; a central frame disposed above the elastic spring and having a horizontal elastic spring embedded therein to dampen horizontal displacement; an upper frame disposed above the central frame and moving horizontally together with the switchboard; a spherical floating receiving member disposed above the support frame and accommodating a spherical floating structure member of the spherical floating support member; and a spherical floating support member comprising a spherical floating structure member disposed to be movable in a 360-degree direction within the spherical floating receiving member. Claim 19 In claim 18, the seismic isolation device further comprises a switchboard lower base disposed on the upper part of the upper frame; wherein a displacement-allowing portion is formed in the center of each of the upper frame and the switchboard lower base by drilling a hole larger than the diameter of the spherical floating support portion, so that when horizontal displacement occurs, the upper frame and the switchboard lower base move without interference with the spherical floating support portion. Claim 20 A switchboard equipped with a function to prevent corrosion of conductive parts through the reduction of harmful gases, comprising: an adsorption cartridge coupled to one side of the switchboard enclosure to reduce harmful gases inside the switchboard; wherein the adsorption cartridge comprises: an intake port disposed at one end in the horizontal direction of the adsorption cartridge and receiving air from the lower vertical direction and guiding it in the horizontal direction; an intake fan that circulates the air delivered from the intake port in the horizontal direction; a first inlet chamber disposed at the rear in the horizontal direction of the intake fan and having a plurality of flow paths branched to deliver the introduced air to a first pellet, a second pellet, and a third pellet, respectively; a first pellet disposed at the rear in the horizontal direction of the first inlet chamber and adsorbing harmful gases as air passes through it in the horizontal direction; a lower air flow path extending horizontally from the lower vertical direction of the first inlet chamber and guiding air in the horizontal direction via the lower vertical direction of the first pellet; a second pellet that adsorbs harmful gases as air delivered through the lower air flow path passes through it in the horizontal direction; and A switchboard comprising: an upper air passage extending horizontally from the vertical upper portion of a first inlet chamber and guiding air horizontally through the vertical upper portion of the first pellet and the second pellet; a third pellet that adsorbs harmful gases as the air delivered through the upper air passage passes horizontally; and an outlet disposed at the horizontal end of the adsorption cartridge and discharging air that has been combined by passing through each of the first pellet, the second pellet, and the third pellet upwardly in the vertical direction. Claim 21 A switchboard equipped with a function to prevent corrosion of conductive parts and prevent electric shock accidents through the reduction of harmful gases, comprising: an enclosure in which power equipment is placed; an adsorption cartridge coupled to one side of the enclosure to reduce harmful gases inside the switchboard; and a control unit that performs control related to the energized state of the power equipment and the lifespan of the adsorption cartridge; wherein the adsorption cartridge comprises: an intake port positioned at one end in the horizontal direction of the adsorption cartridge and receiving air from the lower vertical direction to guide it in the horizontal direction; an intake fan that circulates the air delivered from the intake port in the horizontal direction; a first intake chamber positioned at the rear horizontal direction of the intake fan, into which a plurality of flow paths branch to deliver the incoming air to a first pellet, a second pellet, and a third pellet, respectively; a first pellet positioned at the rear horizontal direction of the first intake chamber to adsorb harmful gases as air passes through it in the horizontal direction; and an air extending horizontally from the lower vertical direction of the first intake chamber, passing through the lower vertical direction of the first pellet to... A lower air passage guiding in a horizontal direction; a second pellet that adsorbs harmful gases as air delivered through the lower air passage passes horizontally; an upper air passage extending horizontally from the vertical upper part of the first inlet chamber and guiding air horizontally via the vertical upper part of the first pellet and the second pellet; a third pellet that adsorbs harmful gases as air delivered through the upper air passage passes horizontally; and an outlet disposed at the other horizontal end of the adsorption cartridge and discharging air that has been combined by passing through each of the first pellet, the second pellet, and the third pellet upward in a vertical direction; wherein the control unit controls the intake fan according to a corrosion risk index derived based on sensing information received from one or more of a harmful gas sensor, a temperature and humidity sensor, and a current detection sensor provided in the switchboard.

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