Positive and negative pressure circulation dehumidification drying device applied to interior of power equipment

Abstract

The utility model discloses a positive and negative pressure circulation dehumidification drying device applied to the interior of power equipment. The device comprises an air inlet pipeline, a positive and negative pressure fan, a hot air mechanism and an air supply pipeline. The input end of the air inlet pipeline is communicated with one side of a cabinet body or a box body provided with power equipment, the output end of the air supply pipeline is communicated with one side, far away from the air inlet pipeline, of the cabinet body or the box body, and the output end of the air inlet pipeline, the positive and negative pressure fan, the hot air mechanism and the input end of the air supply pipeline are sequentially communicated; an air heat energy converter and a dehumidification assembly are arranged between the output end of the air inlet pipeline and the positive and negative pressure fan, the air heat energy converter comprises an outer-layer pipeline and an inner-layer pipeline, and the output end of the air inlet pipeline, the outer-layer pipeline, the dehumidification assembly, the inner-layer pipeline and the input end of the positive and negative pressure fan are sequentially communicated. According to the technical scheme of the utility model, dew formed on the electrical equipment can be destroyed, further development of the dew is prevented, and the electrical equipment is prevented from being damaged or damaged due to humid and hot air.

Description

Technical Field

[0001] The utility model relates to the field of devices for dehumidification and drying, in particular to a positive and negative pressure circulation dehumidification and drying device used in electric power equipment. Background Art

[0002] Power equipment includes a variety of specific equipment, such as distribution cabinets, transformers, and mutual inductors. In actual application scenarios, the above power equipment is usually installed in a cabinet or box.

[0003] In hot and humid weather with high humidity, the moisture in the air will easily form condensation on the surface of the electrical equipment after contacting the electrical equipment in the cabinet or box, and the condensation will cause the dust in the air to adhere to the surface of the electrical equipment. When the soluble salts in the dust are dissolved by water, it is very easy to cause the salt density and ash density to increase, thereby forming a conductive film, which will reduce the insulation resistance of the insulation surface of the electrical equipment and increase the leakage current, thereby causing local creeping discharge. When the insulation resistance drops to a level that cannot withstand the operating voltage of the electrical equipment, flashover will occur on the surface of the electrical equipment, and then a phase-to-phase short circuit will occur. The above situation is likely to cause damage or destruction of the electrical equipment.

[0004] To this end, we propose a positive and negative pressure circulation dehumidification and drying device that can provide dehumidification and drying functions for power equipment installed in a cabinet or box. Utility Model Content

[0005] The main purpose of the utility model is to propose a positive and negative pressure circulation dehumidification and drying device applied to the inside of electric power equipment, aiming to solve the technical problem that the existing electric power equipment is easily damaged and destroyed due to the formation of condensation and dust adhesion.

[0006] To achieve the above-mentioned purpose, the utility model proposes a positive and negative pressure circulation dehumidification and drying device for use in power equipment, comprising an air inlet duct, a positive and negative pressure fan, a hot air mechanism and an air supply duct;

[0007] The input end of the air inlet duct is connected to one side of a cabinet or box body where the power equipment is installed, the output end of the air supply duct is connected to the side of the cabinet or box body away from the air inlet duct, and the output end of the air inlet duct, the positive and negative pressure blower, the hot air mechanism and the input end of the air supply duct are connected in sequence;

[0008] An air heat energy converter and a dehumidification component are provided between the output end of the air inlet duct and the positive and negative pressure fans. The air heat energy converter includes an outer layer duct and an inner layer duct. The inner layer duct is sleeved in the outer layer duct. A ventilation space is provided between the outer layer duct and the inner layer duct.

[0009] The output end of the air inlet duct is connected to the input end of the outer duct, the output end of the outer duct is connected to the input end of the dehumidification component, the output end of the dehumidification component is connected to the input end of the inner duct, and the output end of the inner duct is connected to the input end of the positive and negative pressure fans.

[0010] Optionally, a protective shell is further included, the protective shell includes an air inlet, a first air supply port and a second air supply port, the air inlet, the first air supply port and the second air supply port are all arranged on one side of the protective shell, the input end of the air inlet duct is connected with the output end of the air inlet, and the input end of the air inlet is connected with one side of the cabinet or box;

[0011] The number of the air supply ducts is two, the output ends of the two air supply ducts are respectively connected to the input end of the first air supply port and the input end of the second air supply port, and the output end of the first air supply port and the output end of the second air supply port are connected to a side of the cabinet or box away from the air inlet duct;

[0012] The air heat energy converter, dehumidification component, positive and negative pressure fans and hot air mechanism are all arranged in the protective shell.

[0013] Optionally, a heat dissipation fan and a heat dissipation grid are further included, wherein the heat dissipation fan is arranged at the upper part of the protective shell, and the heat dissipation grid is arranged at the lower part of the protective shell.

[0014] Optionally, it further includes universal wheels, the number of which is four, and the four universal wheels are all arranged at the bottom of the protective shell.

[0015] Optionally, the dehumidification component includes a first connecting pipe, a dehumidification unit and a second connecting pipe, the input end of the first connecting pipe is connected to the output end of the outer pipe, the output end of the first connecting pipe is connected to the input end of the dehumidification unit, the output end of the dehumidification unit is connected to the input end of the second connecting pipe, and the output end of the second connecting pipe is connected to the input end of the inner pipe.

[0016] Optionally, the dehumidification component includes a drain outlet, and the air heat energy converter also includes a water storage tank. The drain outlet is connected to the water storage tank, and the lower parts of the outer layer pipe and the inner layer pipe are both located in the water storage tank.

[0017] Optionally, the outer layer pipe and the inner layer pipe are both arranged in a wave shape.

[0018] The technical solution of the utility model has the following beneficial effects:

[0019] By arranging air inlet ducts, air heat energy converters, dehumidification components, positive and negative pressure fans, hot air mechanisms and air supply ducts, the hot and humid air in the cabinet or box can be drawn into the positive and negative pressure circulating dehumidification and drying device, and after the hot and humid air is dried and dehumidified, the dry air is circulated into the cabinet or box, thereby destroying the condensation already formed on the power equipment and preventing the condensation from further developing. It has the effect of dehumidifying and drying the power equipment in the cabinet or box and avoiding the power equipment from being damaged or damaged by the hot and humid air.

[0020] When it is necessary to dry and dehumidify the electrical equipment in the cabinet or box, the hot and humid air in the cabinet or box is extracted to the air heat converter and dehumidification component through the positive and negative pressure fans, air inlets and air inlet ducts to dry and dehumidify the humid air. After the drying and dehumidification are completed, the dried cold air is input into the hot air mechanism for heating through the positive and negative pressure fans, and then the heated hot air is circulated into the cabinet or box through the air supply duct, the first air supply port and the second air supply port, thereby destroying the condensation formed on the electrical equipment and preventing the condensation from further developing, dehumidifying and drying the electrical equipment in the cabinet or box, and avoiding the electrical equipment from being damaged or damaged by the hot and humid air. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 The overall structure of a positive and negative pressure circulation dehumidification and drying device used in power equipment according to an embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of a positive and negative pressure circulation dehumidification and drying device used in power equipment according to an embodiment of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 A cross-sectional view of an air heat energy converter used in a positive and negative pressure circulation dehumidification and drying device inside an electric power device according to an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the overall structure of an air heat energy converter used in a positive and negative pressure circulating dehumidification and drying device inside an electric power equipment according to one embodiment of the utility model.

[0026] Explanation of the accompanying figures: protective shell 100, universal wheel 110, cooling fan 120, air inlet duct 200, air inlet port 210, air heat energy converter 300, water storage tank 310, outer duct 320, dehumidification component 400, first connecting duct 410, dehumidification part 420, drain port 4201, compressor 430, second connecting duct 440, third connecting duct 500, positive and negative pressure fan 600, fourth connecting duct 700, hot air mechanism 800, air supply duct 900, first air supply port 910, second air supply port 920.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] The utility model provides a positive and negative pressure circulation dehumidification and drying device applied to the inside of electric power equipment.

[0032] like Figures 1 to 4As shown, in one embodiment of the utility model, the positive and negative pressure circulation dehumidification and drying device applied to the inside of the power equipment includes a protective housing 100, an air inlet duct 200, an air heat energy converter 300, a dehumidification assembly 400, a third connecting duct 500, a positive and negative pressure fan 600, a fourth connecting duct 700, a hot air mechanism 800 and an air supply duct 900. Specifically, the input end of the air inlet duct 200 is connected to one side of the cabinet or box body where the power equipment is installed, and the output end of the air supply duct 900 is connected to the side of the cabinet or box body away from the air inlet duct 200. Further, the output end of the air inlet duct 200, the third connecting duct 500, the positive and negative pressure fan 600, the fourth connecting duct 700, the hot air mechanism 800 and the input end of the air supply duct 900 are connected in sequence. In this embodiment, the air inlet duct 200 and the air supply duct 900 can be connected to a single cabinet or box where electrical equipment is installed, or can be connected to multiple cabinets or boxes that are interconnected, thereby dehumidifying and drying the electrical equipment in the cabinet or box.

[0033] In this embodiment, the protective housing 100 includes an air inlet 210, a first air supply port 910, a second air supply port 920, a heat dissipation fan 120, a heat dissipation grid and a universal wheel 110. The air inlet 210, the first air supply port 910 and the second air supply port 920 are all arranged on the upper side of the protective housing 100. Specifically, the input end of the air inlet duct 200 is connected to the output end of the air inlet 210, and the input end of the air inlet 210 can be connected to one side of the cabinet or box. Further, the number of the above-mentioned air supply ducts 900 is two, and the output ends of the two air supply ducts 900 are respectively connected to the input end of the first air supply port 910 and the input end of the second air supply port 920, and the output end of the first air supply port 910 and the output end of the second air supply port 920 can be connected to the side of the cabinet or box away from the air inlet duct 200. Furthermore, the above-mentioned air inlet duct 200, air heat energy converter 300, dehumidification component 400, third connecting duct 500, positive and negative pressure fan 600, fourth connecting duct 700, hot air mechanism 800 and air supply duct 900 are all arranged in the protective shell 100. This structure enables the protective shell to accommodate, install and protect the internal components. In this embodiment, the above-mentioned heat dissipation fan 120 is arranged on the upper side of the protective shell 100, and the heat dissipation grid is arranged at the lower part of the protective shell 100. When in use, the heat dissipation fan 120 can cooperate with the heat dissipation grid to dissipate heat for the components in the protective shell 100. In addition, the number of the above-mentioned universal wheels 110 is specifically four, and the four universal wheels 110 are all arranged at the bottom of the protective shell 100.

[0034] like Figure 1-4As shown, in this embodiment, the air heat energy converter 300 specifically includes an outer layer pipe 320 and an inner layer pipe, wherein the inner layer pipe is sleeved in the outer layer pipe 320, and there is a ventilation space between the outer layer pipe 320 and the inner layer pipe, and the air entering from the input end of the outer layer pipe 320 can flow to the output end of the outer layer pipe 320 through the ventilation space. In addition, the dehumidification component 400 specifically includes a first connecting pipe 410, a dehumidifying part 420, a second connecting pipe 440 and a compressor 430. Specifically, the output end of the air inlet pipe 200, the outer layer pipe 320, the first connecting pipe 410, the dehumidifying part 420, the second connecting pipe 440, the inner layer pipe, the third connecting pipe 500, the positive and negative pressure fans 600, the fourth connecting pipe 700, the hot air mechanism 800 and the input end of the air supply pipe 900 are sequentially connected. In this embodiment, the hot and humid air in the cabinet or box where the electrical equipment is installed can enter the positive and negative pressure circulation dehumidification and drying device from the air inlet 210 and the air inlet duct 200, and after being dehumidified and dried, flow back into the cabinet or box, thereby avoiding damage to the electrical equipment in the cabinet or box.

[0035] In this embodiment, the dehumidifier 420 specifically includes an evaporator, a condenser, a heat dissipation copper tube and a temperature sensor. The dehumidifier 420 dehumidifies and dries the air by cooperating with the compressor 430. The specific working methods and processes of the above five are as follows:

[0036] Evaporator: The main function of the evaporator is to convert moist air into water vapor through evaporation to reduce air humidity. Its working principle is as follows: the evaporator is composed of multiple evaporation tubes, and the inside of the tubes is filled with polymer materials to enhance their surface tension. When air passes through the evaporator, the moisture in the air will form a layer of water film in the polymer material on the surface of the evaporation tube and exchange energy with air molecules, thereby achieving the purpose of rapid cooling.

[0037] Condenser: The condenser uses refrigerant to cool down, condensing the water vapor in the air into water droplets, further reducing the air humidity. Its working principle is as follows: After the air passes through the primary filter, it enters the condenser.

[0038] Heat dissipation copper tube: The heat dissipation copper tube helps to discharge heat during the dehumidification process, ensuring that the condenser can continue to condense effectively. Its working principle is as follows: the heat dissipation copper tube uses the high thermal conductivity of copper to transfer the heat generated by the condenser from the refrigerant to the surrounding air or other media.

[0039] Temperature sensor: The temperature sensor is used to monitor and adjust the operating status of the dehumidification system to ensure the best dehumidification effect. Its working principle is as follows: the temperature sensor converts the temperature value of the environment into the change of electrical quantity of the sensitive unit, such as voltage, current, resistance, etc. These changes in electrical quantity are converted by reading the voltage value of the sensitive unit to obtain the temperature value. The system adjusts the operating status of the compressor 430 and the condenser according to the temperature information provided by the temperature sensor to achieve the ideal dehumidification effect.

[0040] Compressor 430: The compressor 430 provides power for the dehumidifier 420 and drives the refrigerant to circulate in the system. The specific working principle is as follows: the compressor 430 inhales low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it by driving the piston through the motor, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe. This process provides power for the refrigeration cycle and realizes the refrigeration cycle of compression-condensation (heat release)-expansion-evaporation (heat absorption).

[0041] In summary, the low-temperature and low-pressure refrigerant gas in the dehumidification unit 420 is sucked in by the compressor 430 and compressed into a high-temperature and high-pressure gas, and then the refrigerant is turned into a liquid by dissipating heat through the condenser, and finally the heat is absorbed by the evaporator to complete the refrigeration cycle, thereby realizing the dehumidification and drying functions. In this embodiment, the evaporator, the condenser, the heat dissipation copper tube, the temperature sensor and the compressor 430 work together to achieve the dehumidification and drying effects on the air. It is worth noting that the evaporator, the condenser, the heat dissipation copper tube, the temperature sensor, the compressor 430 and the further connection and coordination relationship between the five are all mature existing technologies and will not be repeated in this embodiment.

[0042] like Figure 2 , 3 As shown in FIG. 4 , in this embodiment, the dehumidification component 400 further includes a drain port 4201, and the air heat energy converter 300 further includes a water storage tank 310, and the drain port 4201 is located above the water storage tank 310; and the outer layer pipe 320 and the inner layer pipe are both arranged in a wave shape, and the lower parts of the outer layer pipe 320 and the inner layer pipe are both located in the water storage tank 310. Specifically, after the moisture in the hot and humid air is processed by the dehumidification unit 420 to form condensed water, it can flow out to the water storage tank 310 through the drain port 4201, and the condensed water in the water storage tank 310 can exchange heat with the hot and humid air in the outer layer pipe 320, thereby improving the heat exchange efficiency and saving energy.

[0043] In this embodiment, the specific working principle of the air heat energy converter 300 is as follows: the hot and humid air input from the outer pipe 320 is input into the inner pipe after being dried and dehumidified by the dehumidifying unit 420. The cold air in the inner pipe that has been dehumidified and dried can exchange heat with the hot and humid air in the outer pipe 320, thereby playing a preliminary cooling effect on the humid air in the outer pipe 320. At the same time, the hot and humid air in the outer pipe 320 can also play a preliminary heating effect on the cold air in the inner pipe. In this embodiment, by providing the inner pipe, the outer pipe 320 and the water storage tank 310, heat exchange can be achieved between the hot and humid air and the cold air, and between the hot and humid air and the condensed water, thereby realizing the function of heat energy conversion, so as to save the energy consumed by dehumidifying and drying the power equipment.

[0044] In this embodiment, the hot air mechanism 800 is used to heat the dry air input by the positive and negative pressure fans 600 to a temperature required to destroy the condensation conditions according to the control requirements, so as to ensure that the dry air returning to the inside of the power equipment can destroy the condensation formed on the power equipment in the cabinet or box, thereby preventing the condensation from further developing. It is worth noting that the hot air mechanism 800 is a mature existing technology and will not be described in detail in this embodiment.

[0045] Specifically, the working principle and process of the utility model are:

[0046] By arranging air inlet ducts, air heat energy converters, dehumidification components, positive and negative pressure fans, hot air mechanisms and air supply ducts, the hot and humid air in the cabinet or box can be drawn into the positive and negative pressure circulating dehumidification and drying device, and after the hot and humid air is dried and dehumidified, the dry air is circulated into the cabinet or box, thereby destroying the condensation already formed on the power equipment and preventing the condensation from further developing. It has the effect of dehumidifying and drying the power equipment in the cabinet or box and avoiding the power equipment from being damaged or damaged by the hot and humid air.

[0047] When it is necessary to dry and dehumidify the electrical equipment in the cabinet or box, the hot and humid air in the cabinet or box is extracted to the air heat converter and dehumidification component through the positive and negative pressure fans, air inlets and air inlet ducts to dry and dehumidify the humid air. After the drying and dehumidification are completed, the dried cold air is input into the hot air mechanism for heating through the positive and negative pressure fans, and then the heated hot air is circulated into the cabinet or box through the air supply duct, the first air supply port and the second air supply port, thereby destroying the condensation formed on the electrical equipment and preventing the condensation from further developing, dehumidifying and drying the electrical equipment in the cabinet or box, and avoiding the electrical equipment from being damaged or damaged by the hot and humid air.

[0048] It is worth noting that the above-mentioned positive and negative pressure fans generate negative pressure, thereby drawing the hot and humid air in the cabinet or box where the electrical equipment is installed into the device through the air inlet and the air inlet duct, and generate positive pressure, thereby pressurizing the filtered and dehydrated dry air into the interior of the cabinet or box through the air supply duct, the first air supply port and the second air supply port.

[0049] The design of two-way positive and negative pressure wide flow channel and high wind speed makes the air circulate faster, so as to form a positive and negative pressure circulation drying air curtain inside the cabinet or box, so that the cabinet or box is filled with dry, clean and flowing air, thereby destroying the environmental conditions inside the power equipment that form condensation due to temperature difference and excessive humidity, and preventing condensation on the surface of the power equipment.

[0050] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A positive and negative pressure circulation dehumidification and drying device used in power equipment, characterized in that: Including air inlet duct, positive and negative pressure fans, hot air mechanism and air supply duct; The input end of the air inlet duct is connected to one side of a cabinet or box body where the power equipment is installed, the output end of the air supply duct is connected to the side of the cabinet or box body away from the air inlet duct, and the output end of the air inlet duct, the positive and negative pressure blower, the hot air mechanism and the input end of the air supply duct are connected in sequence; An air heat energy converter and a dehumidification component are provided between the output end of the air inlet duct and the positive and negative pressure fans. The air heat energy converter includes an outer layer duct and an inner layer duct. The inner layer duct is sleeved in the outer layer duct. A ventilation space is provided between the outer layer duct and the inner layer duct. The output end of the air inlet duct is connected to the input end of the outer duct, the output end of the outer duct is connected to the input end of the dehumidification component, the output end of the dehumidification component is connected to the input end of the inner duct, and the output end of the inner duct is connected to the input end of the positive and negative pressure fans.

2. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 1 is characterized in that: It also includes a protective shell, the protective shell includes an air inlet, a first air supply port and a second air supply port, the air inlet, the first air supply port and the second air supply port are all arranged on one side of the protective shell, the input end of the air inlet duct is connected to the output end of the air inlet, and the input end of the air inlet is connected to one side of the cabinet or box; The number of the air supply ducts is two, the output ends of the two air supply ducts are respectively connected to the input end of the first air supply port and the input end of the second air supply port, and the output end of the first air supply port and the output end of the second air supply port are connected to a side of the cabinet or box away from the air inlet duct; The air heat energy converter, dehumidification component, positive and negative pressure fans and hot air mechanism are all arranged in the protective shell.

3. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 2 is characterized in that: It also includes a heat dissipation fan and a heat dissipation grid. The heat dissipation fan is arranged on the upper part of the protective shell, and the heat dissipation grid is arranged on the lower part of the protective shell.

4. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 2 is characterized in that: It also includes universal wheels, the number of which is four, and the four universal wheels are all arranged at the bottom of the protective shell.

5. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 1 is characterized in that: The dehumidification component includes a first connecting pipe, a dehumidification part and a second connecting pipe. The input end of the first connecting pipe is connected to the output end of the outer pipe, the output end of the first connecting pipe is connected to the input end of the dehumidification part, the output end of the dehumidification part is connected to the input end of the second connecting pipe, and the output end of the second connecting pipe is connected to the input end of the inner pipe.

6. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 1 is characterized in that: The dehumidification component includes a drain port, and the air heat energy converter also includes a water storage tank. The drain port is connected to the water storage tank, and the lower parts of the outer layer pipe and the inner layer pipe are both located in the water storage tank.

7. The positive and negative pressure circulation dehumidification and drying device used in power equipment according to claim 6 is characterized in that: The outer layer pipe and the inner layer pipe are both arranged in a wave shape.

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