Novel dustproof insulation busbar

Abstract

The application discloses a novel dustproof insulation busbar, which comprises an insulation busbar body and a shell, the shell comprises an outer shell and an inner shell, the inner shell is provided with a heat dissipation chamber, a functional chamber is formed between the outer shell and the inner shell, a filter screen plate is installed in the functional chamber and divides the functional chamber into a drying area and a filtering area, first air holes are formed in the inner wall of the heat dissipation chamber, second air holes are formed in the inner wall of the functional chamber, a heat dissipation pipeline is installed on the shell and is communicated with the heat dissipation chamber, a dust filter screen, a cleaning part and a dust collecting part are arranged in the filtering area, a micro air pump is arranged in the heat dissipation chamber, a drying and regenerating system is arranged in the drying area, and a PLC is electrically connected with the dust collecting part, the micro air pump, a micro motor and the drying and regenerating system and is installed on the outer wall of the outer shell. The novel dustproof insulation busbar can solve the problems of the existing insulation busbar, such as the accelerated insulation aging and the increased operation safety risk caused by the decreased heat dissipation efficiency, the accumulated dust and the moisture intrusion when the existing insulation busbar is used in a dusty and humid industrial environment for a long time.

Description

Technical Field

[0001] This invention relates to the field of insulating busbar technology, and more specifically, to a novel insulating busbar with dustproof properties. Background Technology

[0002] Insulated busbars, as key conductive components in power supply systems connecting the main switch and branch switches, are typically made of copper or aluminum with an insulated surface. They are widely used in power distribution, communication base stations, industrial control cabinets, and other equipment. Because they often operate under high current and high heat conditions, good heat dissipation and dustproof performance directly affect their service life and operational safety. In actual operating environments, especially in complex conditions such as industrial sites, mines, and outdoors, the air often contains a lot of dust, oil, and humid gases. These impurities easily adhere to the busbars and their insulation surfaces. If too much accumulates, it will hinder heat dissipation, causing localized overheating. Furthermore, in humid environments, dust easily absorbs moisture and conducts electricity, reducing insulation resistance and increasing the risk of leakage or surface discharge.

[0003] Chinese invention patent application number 202211291525.6 discloses a novel dustproof insulating busbar structure. It employs a double-shell design, using a bottom intake and top exhaust to create an airflow channel for heat dissipation of the insulating busbar body. Horizontal partitions and filters located at functional holes and air intakes block dust, which falls below the partitions due to its own weight. While this solution achieves some dust prevention, the filters are prone to clogging over time, leading to increased ventilation resistance and decreased heat dissipation efficiency. Long-term operation still carries the risk of accelerated insulation aging. Furthermore, the design primarily focuses on dust protection and does not consider adaptability to harsh environments such as high humidity and corrosive gases, thus still posing a risk of accelerated insulation aging in actual industrial scenarios.

[0004] Utility model patent application number 202121733526.2 discloses a dustproof and anti-aging insulating busbar. It utilizes a motor-driven reciprocating cleaning mechanism inside the housing to automatically clean the filter screen surface with a brush, preventing dust accumulation from affecting heat dissipation. While this design alleviates filter clogging, it adds mechanical transmission components, resulting in a more complex structure, increased manufacturing costs, and a higher failure rate. Furthermore, the cleaning action may trigger secondary dust generation, allowing some fine dust particles to still enter the housing. In addition, this prior art also lacks specific design considerations for humid and corrosive environments, limiting its overall adaptability.

[0005] Therefore, in summary, there is a need for a new type of dustproof insulating busbar that can achieve a more durable and reliable dustproof effect while ensuring efficient heat dissipation, and can adapt to complex industrial environments such as dusty and humid conditions, thereby delaying insulation aging and improving the overall service life and operational safety of the busbar. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a novel insulating busbar with dustproof properties.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A novel dustproof insulating busbar includes an insulating busbar body and a housing. The housing comprises an outer shell and an inner shell, the inner shell having a heat dissipation chamber. A functional chamber is formed between the outer shell and the inner shell, surrounding the heat dissipation chamber. The housing also includes a base plate for sealing the heat dissipation chamber and the functional chamber. The insulating busbar body is placed inside the heat dissipation chamber and mounted on the base plate. A heat dissipation pipe communicating with the heat dissipation chamber is installed on the base plate. A filter screen is installed inside the functional chamber, dividing the internal space of the functional chamber into a drying zone and a filtration zone. A first vent hole for communicating with the heat dissipation chamber and corresponding to the filtration zone is opened on the inner wall of the heat dissipation chamber, and a second vent hole for communicating with the external environment and corresponding to the drying zone is opened on the inner wall of the functional chamber.

[0009] The filtration zone is equipped with a dust filter screen to prevent external dust from entering the heat dissipation chamber, a cleaning section for cleaning the dust filter screen and the filter screen, and a dust collection section for collecting dust. The dust filter screen and the filter screen plate are on the same plane, and the dust filter screen covers the first air pore.

[0010] The cleaning unit includes a miniature motor corresponding to the dust filter screen, several cleaning scrapers for removing dust accumulated on the dust filter screen and filter plate, and a fixing plate installed at the output end of the miniature motor for fixing the cleaning scrapers. The cleaning scrapers are arranged around the fixing plate and cooperate with the dust filter screen and filter plate.

[0011] A miniature air pump is installed inside the heat dissipation chamber to blow out the heat inside the chamber through the heat dissipation pipe. The input end of the miniature air pump corresponds to the first air hole. A PLC that is electrically connected to the dust collection unit, the miniature air pump, and the miniature motor is installed on the outer wall of the outer casing.

[0012] The drying area is equipped with a drying and regeneration system, which includes color-changing silica gel as a desiccant to prevent external moisture from entering the heat dissipation chamber, a color sensor to monitor the color change of the silica gel, and a heating element installed on the inner wall of the outer shell to dry the silica gel. The outer shell has an observation window corresponding to the drying area. The color sensor is installed on the inner wall of the outer shell and corresponds to the observation window. The PLC is electrically connected to the heating element and the color sensor so that when the color sensor detects that the silica gel changes from dry blue to pink after absorbing moisture, the PLC controls the heating element to heat and evaporate the moisture absorbed by the silica gel.

[0013] The dust collection unit is further configured such that it includes a suction fan and a dust collection bag, the input end of the suction fan is connected to the filtration zone, and the dust collection bag is detachably connected to the output end of the suction fan.

[0014] A further configuration is that the opening of the dust collection bag is a drawstring structure, and the dust collection bag is detachably connected to the output end of the suction fan via the drawstring structure.

[0015] Further configured, the PLC is configured to: control the start and stop of the micro air pump, periodically start the micro motor to drive the cleaning scraper to clean the dust filter screen and the dust accumulated on the filter screen, and start the suction fan at the same time as starting the micro motor to collect the cleaned dust, and the suction force generated when the suction fan starts is greater than the suction force generated when the micro air pump is working.

[0016] A further provision is that the heat dissipation pipe has a one-way valve.

[0017] Further configured, the inner shell is made of heat-insulating material, and the drying area is provided with a septum to prevent the heating element from directly contacting the color-changing silicone. The septum is made of a thermally conductive material with a thermal conductivity of ≥2.0W / m·K, preferably alumina ceramic or thermally conductive silicone. The cleaning scraper includes a brush surface that contacts the dust filter or filter plate.

[0018] A further feature is that the inner wall of the housing has an extended groove to facilitate the rotation of the cleaning scraper.

[0019] Further, the housing is provided with multiple through holes to facilitate the extension of the input and output ends of the insulating busbar body, and the through holes are sealed with potting compound.

[0020] A further provision is that the connection between the base plate and the outer shell and inner shell is fixed and sealed with potting compound.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0022] 1. This invention modularly integrates three core functions—heat dissipation, dust prevention, and moisture prevention—within a double-layered shell comprising a heat dissipation chamber and a functional chamber, creating a proactively managed microenvironment. By controlling a micro air pump, cleaning unit, dust collection unit, and drying and regeneration system via PLC, intelligent and automated management of the temperature, cleanliness, and humidity within the heat dissipation chamber is achieved. This fundamentally overcomes the shortcomings of traditional passive solutions (such as relying solely on filters) whose performance degrades over time. It ensures efficient heat dissipation while achieving a more durable and reliable dust prevention effect, enabling long-term reliable operation.

[0023] 2. The synergistic effect of the drying and regeneration system, dust filter screen, cleaning section for cleaning the dust filter screen and the dust collection section for collecting dust prevents insulation degradation and electrochemical corrosion caused by condensation or damp dust. Combined with potting compound to seal critical joints and through holes, and a micro-pump to blow heat out of the heat dissipation chamber through heat dissipation pipes, creating a positive pressure environment within the heat dissipation chamber that resists the intrusion of external humid gases and dust, this allows the insulating busbar to operate stably in complex industrial environments such as mines and coastal areas with high dust and humidity, delaying insulation aging and improving the adaptability and reliability of the insulating busbar in harsh industrial environments.

[0024] 3. Compared with the solution mentioned in the background technology that adds a complex mechanical dust removal mechanism (patent 202121733526.2), the present invention combines the rotation of the cleaning scraper driven by a micro motor with the collection of a suction fan and a dust collection bag. The structure is simpler and the operation is more reliable. It avoids the high failure rate risk caused by the reciprocating motion of the motor and completely solves the problem of "secondary dust".

[0025] Furthermore, this invention utilizes color-changing silica gel to absorb moisture. When a color sensor detects that the silica gel changes from dry blue to pink after absorbing moisture, a PLC-controlled heating element heats and evaporates the moisture absorbed by the silica gel. This allows the silica gel, acting as a desiccant, to be regenerated in situ without manual replacement and can be recycled. This avoids the problem of insufficient manual maintenance and timely replacement of the silica gel, which could increase humidity in the heat dissipation chamber and affect the safety of the busbar operation. It also reduces the maintenance needs and costs throughout the product's lifecycle, thus improving its practicality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0027] Figure 2 A schematic diagram showing the structure of the cleaning scraper in conjunction with the dust filter and filter plate.

[0028] Figure 3 This is a schematic diagram of the structure for the cleaning scraper and brush surface.

[0029] In the diagram: Insulating busbar body 100, shell 200, outer shell 1, inner shell 2, heat dissipation chamber 3, functional chamber 4, base plate 5, filter screen 6, drying area 41, filtering area 42, first air hole 7, second air hole 8, heat dissipation pipe 9, dust filter screen 10, cleaning section 11, dust collection section 12, micro motor 111, cleaning scraper 112, fixed plate 113, micro air pump 13, color-changing silicone 14, color sensor 15, heating element 16, observation window 17, suction fan 121, dust collection bag 122, brush surface 1121, extension groove 18, through hole 19, spacer 20. Detailed Implementation

[0030] This invention provides a novel dustproof insulating busbar, which aims to solve the problems of accelerated insulation aging and increased operational safety risks caused by decreased heat dissipation efficiency, dust accumulation, and moisture intrusion when existing insulating busbars are operated for a long time in dusty and humid industrial environments.

[0031] Reference Figures 1 to 3 The embodiments of the present invention will be further described below.

[0032] The novel insulating busbar of the present invention includes an insulating busbar body 100 and a housing 200. The housing 200 includes an outer shell 1 and an inner shell 2. The housing 200 is provided with a plurality of through holes 19 to facilitate the extension of the input and output ends of the insulating busbar body 100. The through holes 19 are sealed with potting compound to improve the sealing level of the housing 200. The inner shell 2 has a heat dissipation chamber 3. A functional chamber 4 is formed between the outer shell 1 and the inner shell 2, surrounding the heat dissipation chamber 3. The housing 200 also includes a base plate 5 for sealing the heat dissipation chamber 3 and the functional chamber 4. The insulating busbar body 100 is placed in the heat dissipation chamber 3 and mounted on the base plate 5. The connection between the base plate 5 and the outer shell 1 and the inner shell 2 is fixed and sealed with potting compound to further improve the sealing level of the housing 200. This helps to prevent external dust, moisture, etc. from entering the heat dissipation chamber 3 through gaps and affecting the safe operation of the insulating busbar body 100.

[0033] A filter plate 6 is installed inside the functional chamber 4. The filter plate 6 divides the internal space of the functional chamber 4 into a drying zone 41 and a filtering zone 42. A first air hole 7 is opened on the inner wall of the heat dissipation chamber 3 to connect the heat dissipation chamber 3 and to correspond to the filtering zone 42. A second air hole 8 is opened on the inner wall of the functional chamber 4 to connect to the external environment and to correspond to the drying zone 41. While the filter plate 6 divides the areas, under the action of the micro air pump 13, the outside air enters the drying zone 41 through the second air hole 8. When the outside air passes through the filter plate 6, the filter plate 6 performs primary filtration of the dust in the outside air.

[0034] The filtration zone 42 is equipped with a dust filter 10 to block external dust from entering the heat dissipation chamber 3, a cleaning part 11 for cleaning the dust filter 10 and the filter plate, and a dust collection part 12 for collecting dust. The dust filter 10 and the filter plate 6 are on the same plane. The dust filter 10 covers the first air hole 7. The input end of the micro air pump 13 corresponds to the first air hole 7, so that the dust filter 10 covering the first air hole 7 can further filter the dust in the outside air when the micro air pump 13 pumps the outside air into the heat dissipation chamber 3 through the second air hole 8 and the functional chamber 4.

[0035] A heat dissipation pipe 9 connected to the heat dissipation chamber 3 is installed on the base plate 5. A miniature air pump 13 is installed in the heat dissipation chamber 3 to blow out the heat in the heat dissipation chamber 3 through the heat dissipation pipe 9. The miniature air pump 13 works to blow out the heat in the heat dissipation chamber 3 through the heat dissipation pipe 9 to dissipate heat, while making the air pressure in the heat dissipation chamber 3 higher than the external environment to form a positive pressure environment to prevent dust from seeping into the heat dissipation chamber 3 from the gaps. The heat dissipation pipe 9 is equipped with a one-way valve, so that only the heat inside the heat dissipation chamber 3 is allowed to be discharged with the gas, preventing the backflow of external air and the introduction of external impurities.

[0036] The cleaning unit 11 includes a micro motor 111 corresponding to the dust filter 10, a plurality of cleaning scrapers 112 for removing dust accumulated on the dust filter 10 and the filter plate 6, and a fixing plate 113 installed at the output end of the micro motor 111 for fixing the plurality of cleaning scrapers 112. The plurality of cleaning scrapers 112 are arranged around the fixing plate 113. The cleaning scrapers 112 include a brush surface 1121 that contacts the dust filter 10 or the filter plate 6 (the brush surface 1121 can be referred to as the brush surface of the polyester filament material on the electrostatic lint remover brush used for removing lint from clothing), so that the brush surface 1121 on the cleaning scraper 112 can contact the dust filter 10 or the filter plate during the rotation of the cleaning scraper 112. The cleaning process involves contact cleaning. The inner wall of the outer casing 1 has an extension groove 18 that facilitates the rotation of the cleaning scraper 112. The extension groove 18 is located on the rotation path of the cleaning scraper 112, providing sufficient space for the rotation of the cleaning scraper 112. This prevents the inner wall of the outer casing 1 from contacting the cleaning scraper 112 when it rotates to the position of the filter screen 6, thus preventing the cleaning scraper 112 from being unable to rotate for cleaning. The dust collection unit 12 includes a suction fan 121 and a dust collection bag 122. The input end of the suction fan 121 is connected to the filter area 42. The opening of the dust collection bag 122 is a drawstring structure, and the dust collection bag 122 is detachably connected to the output end of the suction fan 121 through the drawstring structure. A PLC (not shown in the figure) is installed on the outer wall of the outer casing 1. The PLC is configured to control the start and stop of the micro air pump 13, periodically start the micro motor 111 to drive the cleaning scraper 112 to clean the dust accumulated on the dust filter screen 10 and the filter screen plate 6, and start the suction fan 121 at the same time as starting the micro motor 111 to collect the cleaned dust. The suction fan 121 with a power greater than that of the micro air pump 13 is selected so that the suction force generated when the suction fan 121 starts is greater than that generated when the micro air pump 13 is working. For example, the suction fan 121 has a rated power of 25W and a maximum air volume of 28m³ / h, and the micro air pump 13 has a rated power of 12W and a maximum air volume of 16m³ / h. This is so that when the suction fan 121 starts, the dust cleaned by the cleaning scraper 112 is sucked into the dust collection bag 122 for collection and will not be re-adsorbed onto the dust filter screen 10 under the suction force of the micro air pump 13.

[0037] The drying zone 41 is equipped with a drying and regeneration system. This system includes color-changing silica gel 14 as a desiccant to prevent external moisture from entering the heat dissipation chamber 3, a color sensor 15 (such as an RGB sensor) for monitoring color changes in the silica gel 14, and a heating element 16 mounted on the inner wall of the outer casing 1 for drying the silica gel 14. The silica gel 14 fills the entire drying zone 41. The outer casing 1 has an observation window 17 corresponding to the drying zone 41. The color sensor 15 is mounted on the inner wall of the outer casing 1 and corresponds to the observation window 17, allowing the color sensor 15 to detect color changes in the silica gel 14 within the drying zone 41 through the observation window 17. The PLC and... The heating element 16 and the color sensor 15 are electrically connected so that when the color sensor 15 detects that the color-changing silicone 14 changes from dry blue to hygroscopic pink, the heating element 16 is heated and evaporated by the PLC to evaporate the moisture absorbed by the color-changing silicone 14. The inner shell 2 is made of heat-insulating material (such as polyetheretherketone with a thermal conductivity of 0.25 W / m·K). The drying zone 41 is provided with a spacer 20 to prevent the heating element 16 from directly contacting the color-changing silicone 14, thus preventing the high-temperature heating element 16 from directly contacting the desiccant and causing material degradation. The spacer 20 is made of a thermally conductive material with a thermal conductivity ≥2.0 W / m·K, preferably an alumina ceramic sheet or a thermally conductive silicone pad. When alumina ceramic is used, its thermal conductivity is 20-30 W / m·K, which can withstand the operating temperature of the heating element 16 (usually ≤150℃) and evenly transfer heat to the color-changing silicone. When a thermally conductive silicone pad is used, its flexibility can adapt to thermal expansion and contraction, ensuring long-term contact stability.

[0038] Working principle: The PLC starts the micro air pump 13, which drives outside air through the second air hole 8 on the housing 200 into the drying zone 41 of the functional chamber 4. The moisture contained in the air entering the drying zone 41 is efficiently adsorbed by the color-changing silica gel 14 desiccant, ensuring that the air is dry before entering the core area. This is the first key line of defense against internal condensation and insulation aging. The dried air flows through the filter plate 6 to the filtration zone 42. The filter plate 6 performs primary filtration of dust in the outside air. The outside air that has passed through the primary filtration is driven by the micro air pump 13 to pass through the dust filter 10 and enter the heat dissipation chamber 3. The residual dust particles are completely intercepted by the dust filter 10. At this point, the air entering the heat dissipation chamber 3 has completed the dual purification of "drying + dust removal" and become dry and clean air.

[0039] The purified, dry, and clean air is pumped into the heat dissipation chamber 3 through the first air vent 7. The airflow flows directly over the surface of the high-heat insulating busbar body 100, efficiently carrying away its heat. Driven by the micro air pump 13, the heat-carrying air is discharged from the housing 200 through the heat dissipation pipe 9 on the base plate 5. The one-way valve on the heat dissipation pipe 9 prevents backflow of external air. This process forms a directional and forced air-cooling heat dissipation cycle from "drying and filtering → heat absorption through the insulating busbar body 100 → forced discharge". The heat dissipation efficiency is far higher than that of natural convection or simple open design. At the same time, the micro air pump 13 continuously supplies air to the well-sealed heat dissipation chamber 3, keeping its internal air pressure slightly higher than the external environment. This slightly positive pressure environment ensures that the airflow in the chamber only flows out and not in, preventing unfiltered dusty and humid air from seeping in through any tiny gaps such as the joints and through holes 19 of the housing 200, thus achieving active isolation and dust prevention.

[0040] The PLC presets the start cycle of the micro motor 111 (e.g., daily), and starts the self-cleaning program according to the preset cycle. First, the PLC controls the micro motor 111 to rotate, driving the cleaning scraper 112 fixed at its output end to rotate. The rotating cleaning scraper 112 scrapes away the dust accumulated on the dust filter screen 10 and filter plate 6 through the brush surface 1121. Simultaneously, the suction fan 121 generates a strong suction airflow in the filtration zone 42, flowing towards the dust collection bag 122 (this suction force is configured to be greater than the suction force of the micro air pump 13). This airflow immediately sucks away the scraped dust and transports it to the dust collection bag 122 through the pipe. The entire "scraping-sucking" process is completed in the sealed functional chamber 4. The stripped dust is instantly removed, completely avoiding "secondary dust" contamination of the filter screen or entry into the heat dissipation chamber 3, forming a self-cleaning mechanism for the dust filter screen 10 and filter plate 6. The structure is simple and can achieve a more durable and reliable dustproof effect while ensuring efficient heat dissipation. When the dust bag 122 is full, staff can easily untie the drawstring opening to disassemble and clean it, making maintenance very convenient.

[0041] Color sensors 15, distributed in the drying zone 41, continuously monitor the color of the color-changing silica gel 14. When the color-changing silica gel 14, acting as a desiccant, changes from a dry blue to a saturated pink due to moisture absorption, the color sensor 15 transmits a signal to the PLC. Upon receiving the signal, the PLC automatically activates the heating element 16 to heat the damp color-changing silica gel 14 and simultaneously activates the suction fan 121 to generate suction. The moisture adsorbed inside the color-changing silica gel 14 evaporates due to the heat and is carried out of the housing 200 to the dust collection bag 122 by the strong suction generated by the suction fan 121, preventing the moisture from entering the heat dissipation chamber 3 and affecting the operation of the insulating busbar body 100. The color-changing silica gel 14 then recovers its blue color and drying ability, achieving in-situ regeneration. After the color sensor 15 detects that the color-changing silica gel 14 has turned blue, it controls the heating element 16 and the suction fan 121 to stop working via the PLC. The inner shell 2 is made of heat-insulating material, which effectively blocks the heat generated by the heating element 16 during drying and regeneration from being transferred to the internal heat dissipation chamber 3. This ensures that the drying and regeneration process of the color-changing silica gel 14 does not affect the working temperature of the insulating busbar body 100, so that the two functions of heat dissipation and dehumidification do not interfere with each other.

[0042] The color-changing silica gel 14 used as a desiccant can be regenerated in situ without manual replacement and can be recycled. This avoids the problem of insufficient manual maintenance in the later stages, which could increase the humidity in the heat dissipation chamber 3 and affect the safety of the busbar operation. It also reduces the maintenance needs and costs throughout the entire life cycle and improves the practicality of the product.

[0043] This invention, through the synergistic operation of the above-mentioned working principles, deeply integrates three major functions: positive pressure dust prevention, forced air cooling, and intelligent dehumidification and regeneration. Intelligent coordination by a PLC enables intelligent and automated management of the internal temperature, cleanliness, and humidity of the heat dissipation chamber 3. This ensures efficient heat dissipation while achieving a more durable and reliable dust prevention effect, enabling long-term reliable operation. It fundamentally overcomes the shortcomings of traditional passive solutions (such as relying solely on filters) whose performance decays over time, providing a stable and durable ideal microenvironment for the insulating busbar body 100. This allows the insulating busbar body 100 to operate stably in complex industrial environments such as mines and coastal areas with high dust and humidity, delaying insulation aging and improving the adaptability and reliability of the insulating busbar body 100 in harsh industrial environments.

[0044] The self-cleaning mechanism of the dust filter mesh 10 and filter plate 6, as well as the color-changing silica gel 14 acting as a desiccant, can be regenerated in situ, minimizing daily maintenance workload. Users only need to replace the dust collection bag 122 periodically. Compared with the complex mechanical reciprocating cleaning mechanism of the prior art, the self-cleaning mechanism structure designed in this invention is simpler and more reliable, reducing the failure rate and improving the overall service life and operational safety.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel dustproof insulating busbar, comprising an insulating busbar body (100) and a housing (200), characterized in that, The housing (200) includes an outer shell (1) and an inner shell (2), the inner shell (2) having a heat dissipation chamber (3), and a functional chamber (4) surrounding the heat dissipation chamber (3) is formed between the outer shell (1) and the inner shell (2). The housing (200) also includes a base plate (5) for sealing the heat dissipation chamber (3) and the functional chamber (4). A heat dissipation pipe (9) communicating with the heat dissipation chamber (3) is installed on the base plate (5). An insulating busbar body (100) is placed in the heat dissipation chamber (3) and installed on the base plate (5). A filter screen plate (6) is installed in the functional chamber (4). The filter screen plate (6) divides the internal space of the functional chamber (4) into a drying area (41) and a filtering area (42). A first vent (7) is opened on the inner wall of the heat dissipation chamber (3) to communicate with the heat dissipation chamber (3) and corresponds to the filtering area (42). A second vent (8) is opened on the inner wall of the functional chamber (4) to communicate with the external environment and corresponds to the drying area (41). The filtration zone (42) is provided with a dust filter (10) to block external dust from entering the heat dissipation chamber (3), a cleaning part (11) for cleaning the dust filter (10) and the filter, and a dust collection part (12) for collecting dust. The dust filter (10) and the filter plate (6) are on the same plane, and the dust filter (10) covers the first air hole (7). The cleaning unit (11) includes a micro motor (111) corresponding to the dust filter (10), several cleaning scrapers (112) for removing dust accumulated on the dust filter (10) and the filter plate (6), and a fixing plate (113) installed at the output end of the micro motor (111) for fixing the several cleaning scrapers (112). The several cleaning scrapers (112) are arranged around the fixing plate (113) and cooperate with the dust filter (10) and the filter plate (6). A miniature air pump (13) is installed inside the heat dissipation chamber (3) to blow out the heat inside the heat dissipation chamber (3) through the heat dissipation pipe (9). The input end of the miniature air pump (13) corresponds to the first air hole (7). A PLC that is electrically connected to the dust collection part (12), the miniature air pump (13), and the miniature motor (111) is installed on the outer wall of the outer casing (1). The drying zone (41) is equipped with a drying and regeneration system. The drying and regeneration system includes a color-changing silica gel (14) used as a desiccant to prevent external moisture from entering the heat dissipation chamber (3), a color sensor (15) used to monitor the color change of the color-changing silica gel (14), and a heating plate (16) installed on the inner wall of the outer shell (1) for drying the color-changing silica gel (14). The outer shell (1) is equipped with an observation window (17) corresponding to the drying zone (41). The color sensor (15) is installed on the inner wall of the outer shell (1) and corresponds to the observation window (17). The PLC is electrically connected to the heating plate (16) and the color sensor (15) so that when the color sensor (15) detects that the color-changing silica gel (14) changes from dry blue to pink after absorbing moisture, the PLC controls the heating plate (16) to heat and evaporate the moisture absorbed by the color-changing silica gel (14).

2. The novel insulating busbar with dustproof properties according to claim 1, characterized in that, The dust collection unit (12) includes a blower (121) and a dust collection bag (122). The input end of the blower (121) is connected to the filter area (42), and the dust collection bag (122) is detachably connected to the output end of the blower (121).

3. A novel dustproof insulating busbar according to claim 2, characterized in that, The dust collection bag (122) has a drawstring opening and is detachably connected to the output end of the suction fan (121) via the drawstring structure.

4. A novel dustproof insulating busbar according to claim 3, characterized in that, The PLC is configured to: control the start and stop of the micro air pump (13), periodically start the micro motor (111) to drive the cleaning scraper (112) to clean the dust accumulated on the dust filter screen (10) and filter screen plate (6), and start the suction fan (121) at the same time as starting the micro motor (111) to collect the cleaned dust, and the suction force generated when the suction fan (121) is started is greater than the suction force generated when the micro air pump (13) is working.

5. A novel dustproof insulating busbar according to claim 1, characterized in that, The heat dissipation pipe (9) has a one-way valve.

6. A novel dustproof insulating busbar according to claim 1, characterized in that, The inner shell (2) is made of heat-insulating material. The drying area (41) is provided with a septum (20) to prevent the heating element (16) from directly contacting the color-changing silicone (14). The septum (20) is made of a thermally conductive material with a thermal conductivity ≥2.0W / m·K, preferably alumina ceramic or thermally conductive silicone. The cleaning scraper (112) includes a brush surface (1121) that contacts the dust filter (10) or filter plate (6).

7. A novel dustproof insulating busbar according to claim 1, characterized in that, The inner wall of the outer casing (1) has an extension groove (18) that facilitates the rotation of the cleaning scraper (112).

8. A novel dustproof insulating busbar according to claim 1, characterized in that, The housing (200) is provided with a plurality of through holes (19) to facilitate the extension of the input and output ends of the insulating busbar body (100), and the through holes (19) are sealed with potting compound.

9. A novel dustproof insulating busbar according to claim 1, characterized in that, The connection between the base plate (5) and the outer shell (1) and inner shell (2) is fixed and sealed with potting compound.

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