Moisture-proof protection device and method for electric power equipment

Abstract

The present invention discloses a moisture-proof protection device and method for electric power equipment, comprising a sealed equipment box, wherein a device chamber and a dehumidification chamber are arranged in the equipment box, a first air inlet and a first air outlet are arranged between the dehumidification chamber and the device chamber, a drying cylinder and an air pump are installed in the dehumidification chamber, a humidity sensor for detecting the humidity in the device chamber is arranged in the device chamber, a second air inlet and a second air outlet connected to the outside are arranged on the side wall of the dehumidification chamber, the drying cylinder and the air pump are connected to the first air inlet, the first air outlet, the second air inlet and the second air outlet via a switching pipeline; a drying mechanism for heating and dehumidifying a desiccant is arranged on the periphery of the drying cylinder; the present invention dries the gas inside the equipment box and restores the desiccant by switching the air circuit, so that there is no need to frequently replace the desiccant, thereby having a better moisture-proof effect.

Description

Technical Field

[0001] The present invention relates to the technical field related to moisture-proofing of electric equipment, and in particular to a moisture-proofing protection device and method for electric equipment. Background Art

[0002] Power equipment is an electricity production and consumption system consisting of power generation, transmission, transformation, distribution and consumption. It converts primary energy from nature into electricity through power generation devices, and then supplies electricity to various users through transmission, transformation and distribution. Nowadays, a large number of electronic control equipment are densely installed inside the distribution cabinet. During long-term use, a large amount of heat will be generated. High temperature will have adverse effects on the electronic control equipment and even cause fire. Therefore, when designing the distribution cabinet, heat dissipation holes will be opened on the surface of the distribution cabinet to dissipate the heat inside the distribution cabinet to the outside. The distribution cabinet is generally installed outdoors, and when it rains or other humid weather outside, the humid gas from the outside will enter the interior of the distribution cabinet from the position of the heat dissipation holes. Long-term humid air will cause short circuits and other hazards to the electronic control equipment inside the distribution cabinet. Summary of the invention

[0003] In order to solve the defects in the prior art, the present invention provides a moisture-proof protection device and method for electric equipment.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The moisture-proof protection device and method for electric power equipment of the present invention include a sealed equipment box, wherein a device chamber and a dehumidification chamber are arranged in the equipment box, a first air inlet and a first air outlet are arranged between the dehumidification chamber and the device chamber, and a drying cylinder and an air pump are installed in the dehumidification chamber, a humidity sensor for detecting the humidity in the device chamber is arranged in the device chamber, a second air inlet and a second air outlet connected to the outside are arranged on the side wall of the dehumidification chamber, and the drying cylinder and the air pump are connected to the first air inlet, the first air outlet, the second air inlet and the second air outlet via a switching pipeline; a drying mechanism for heating and dehumidifying the desiccant is arranged on the periphery of the drying cylinder.

[0006] As a preferred technical solution of the present invention, the drying cylinder includes a cylindrical cylinder body, and a vertically upward inner mesh cylinder is provided in the middle of the cylinder body, and an outer mesh cylinder is provided outside the inner mesh cylinder, the outer mesh cylinder is a double mesh structure and a partition is provided inside, and a ventilation gap is formed between the inner mesh cylinder and the outer mesh cylinder.

[0007] As a preferred technical solution of the present invention, a desiccant circulation mechanism is provided between the inner net cylinder and the outer net cylinder, and the desiccant circulation mechanism includes a plurality of inclined feed ducts arranged between the bottom of the inner net cylinder and the bottom of the outer net cylinder, and a plurality of feed ducts are arranged between the upper part of the inner net cylinder and the outer net cylinder, and a vertically upward conveying dragon is provided inside the inner net cylinder.

[0008] As a preferred technical solution of the present invention, a guide plate inclined toward the feed conduit is provided at the lower portion of the outer net cylinder.

[0009] As a preferred technical solution of the present invention, the drying mechanism includes a heating wire which is arranged at the periphery of the drying cylinder and is provided on the drying cylinder, and the heating temperature of the heating wire is 50-60 degrees Celsius.

[0010] As a preferred technical solution of the present invention, the desiccant in the drying cylinder is granular, and its diameter is larger than the mesh apertures of the inner net cylinder and the outer net cylinder;

[0011] A metal heat sink is also provided in the equipment box, and electrical devices are all mounted on the metal heat sink. A semiconductor refrigeration sheet is attached to the back side of the metal heat sink, and the cooling surface of the semiconductor refrigeration sheet is attached to the surface of the metal heat sink. A temperature sensor is provided in the equipment box, and a controller is also provided in the equipment box. The temperature sensor and the semiconductor refrigeration sheet are electrically connected to the controller. When the temperature sensor detects that the temperature in the equipment box reaches the set heat dissipation value, the controller controls the semiconductor refrigeration sheet to perform cooling.

[0012] A method is used to implement the above-mentioned moisture-proof protection device for electric equipment, when the humidity sensor detects that the humidity in the device chamber reaches a warning value, the air pump is operated, and the switching pipeline is controlled to connect the first air inlet and the first air outlet, so that the air in the device chamber is internally circulated through the drying cylinder;

[0013] When the desiccant in the drying cylinder is restored, the switching pipeline is controlled to connect the second air inlet and the second air outlet, so that external air enters the drying cylinder to ventilate and dehumidify the desiccant in the drying cylinder.

[0014] The beneficial effects of the present invention are:

[0015] 1. The moisture-proof protection device for electric equipment is provided with a device room and a dehumidification room, so that the dehumidification components will not interfere with the components in the device room, a first air inlet and a first air outlet are provided between the dehumidification room and the device room, and a drying cylinder and an air pump are installed in the dehumidification room, and the drying cylinder and the air pump are connected with the first air inlet, the first air outlet, the second air inlet and the second air outlet through a switching pipeline; when the humidity sensor detects that the humidity in the device room reaches the warning value, the air pump works, and controls the switching pipeline to connect the first air inlet and the first air outlet, so that the air in the device room is circulated internally through the drying cylinder; when the desiccant in the drying cylinder is restored, the switching pipeline is controlled to connect the second air inlet and the second air outlet, so that external air enters the drying cylinder to ventilate and dehumidify the desiccant in the drying cylinder, and the gas circuit is switched in this way to dry the gas inside the equipment box and restore the desiccant, so that there is no need to frequently replace the desiccant, thereby having a better moisture-proof effect.

[0016] 2. In this type of moisture-proof protection device for electric power equipment, a specific drying cylinder is arranged, wherein the drying cylinder is composed of an inner mesh cylinder and an outer mesh cylinder, and a desiccant circulation mechanism is arranged between the inner mesh cylinder and the outer mesh cylinder, so that the desiccant flows, thereby having a better drying effect and facilitating subsequent heating recovery, wherein the desiccant in the inner mesh cylinder is transported upward by a conveying auger, and enters the upper part of the outer mesh cylinder through the discharge conduit, while the desiccant in the lower part of the outer mesh cylinder enters the lower part of the inner mesh cylinder under the guiding action of the inclined feed conduit, thus forming a circulation, allowing the desiccant to flow, thereby having a better drying effect and facilitating subsequent heating recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic diagram of the internal structure of the moisture-proof protective device for electric equipment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a drying cylinder of a moisture-proof protective device for electric power equipment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a feed conduit of a moisture-proof protective device for electric power equipment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a material guide plate of a moisture-proof protective device for electric power equipment of the present invention;

[0023] Figure 5The invention is a schematic diagram of the installation of a semiconductor cooling plate of the moisture-proof protection device for electric power equipment.

[0024] In the figure: 1. Equipment box; 2. Device room; 3. Dehumidification room; 4. First air inlet; 5. First air outlet; 6. Drying cylinder; 7. Humidity sensor; 8. Second air inlet; 9. Second air outlet; 10. Air pump; 11. Switching pipeline; 12. Cylinder; 13. Inner net cylinder; 14. Outer net cylinder; 15. Interlayer; 16. Feed duct; 17. Feed duct; 18. Conveying dragon; 19. Guide plate; 20. Heating wire; 21. Metal heat sink; 22. Semiconductor refrigeration chip; 23. Temperature sensor; 24. Controller; 25. First air inlet pipe; 26. Second air inlet pipe; 27. First air outlet pipe; 28. Second air outlet pipe; 29. ​​First solenoid valve; 30. Second solenoid valve; 31. Third solenoid valve; 32. Fourth solenoid valve. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the moisture-proof protection device and method for electric power equipment of the present invention include a sealed equipment box 1, wherein a device chamber 2 and a dehumidification chamber 3 are provided in the equipment box 1, a first air inlet 4 and a first air outlet 5 are provided between the dehumidification chamber 3 and the device chamber 2, and a drying cylinder 6 and an air pump 10 are installed in the dehumidification chamber 3, a humidity sensor 7 for detecting the humidity in the device chamber 2 is provided in the device chamber 2, a second air inlet 8 and a second air outlet 9 communicating with the outside are provided on the side wall of the dehumidification chamber 3, the drying cylinder 6 and the air pump are connected with the first air inlet 4, the first air outlet 5, the second air inlet 8 and the second air outlet 9 via a switching pipeline 11; a drying mechanism for heating and dehumidifying the desiccant is provided on the periphery of the drying cylinder 6.

[0027] By setting the device chamber 2 and the dehumidification chamber 3, the dehumidification components will not interfere with the components in the device chamber 2. A first air inlet 4 and a first air outlet 5 are provided between the dehumidification chamber 3 and the device chamber 2, and a drying cylinder 6 and an air pump 10 are installed in the dehumidification chamber 3. The drying cylinder 6 and the air pump 10 are connected with the first air inlet 4, the first air outlet 5, the second air inlet 8 and the second air outlet 9 through a switching pipeline 11; when the humidity sensor 7 detects that the humidity in the device chamber 2 reaches the warning value, the air pump 10 starts working and controls the switching. The pipeline 11 connects the first air inlet 4 and the first air outlet 5, so that the air in the device chamber 2 is circulated internally through the drying cylinder 6; when the desiccant in the drying cylinder 6 is restored, the switching pipeline 11 is controlled to connect the second air inlet 8 and the second air outlet 9, so that the outside air enters the drying cylinder 6 to ventilate and dehumidify the desiccant in the drying cylinder 6. In this way, the air circuit is switched to dry the gas inside the equipment box 1 and restore the desiccant. In this way, there is no need to frequently replace the desiccant, thereby having a better anti-moisture effect.

[0028] Among them, the drying cylinder 6 includes a cylindrical cylinder body 12, and a vertically upward inner mesh cylinder 13 is provided in the middle of the cylinder body 12, and an outer mesh cylinder 14 is provided outside the inner mesh cylinder 13, and the outer mesh cylinder 14 is a double-mesh structure and a partition 15 is provided inside. A ventilation gap is formed between the inner mesh cylinder 13 and the outer mesh cylinder 14, so that air can flow through the ventilation gap formed between the inner mesh cylinder 13 and the outer mesh cylinder 14, and it is convenient to contact with the desiccant, thereby having a better drying effect.

[0029] A desiccant circulation mechanism is provided between the inner net cylinder 13 and the outer net cylinder 14, and the desiccant circulation mechanism includes a plurality of inclined feed ducts 16 provided between the bottom of the inner net cylinder 13 and the bottom of the outer net cylinder 14, and a plurality of discharge ducts 17 are provided between the upper parts of the inner net cylinder 13 and the outer net cylinder 14, and a vertically upward conveying dragon 18 is provided inside the inner net cylinder 1313. By setting up a specific drying cylinder 6, wherein the drying cylinder 6 is composed of an inner mesh cylinder 13 and an outer mesh cylinder 14, and a desiccant circulation mechanism is provided between the inner mesh cylinder 13 and the outer mesh cylinder 14, the desiccant can flow, thereby having a better drying effect and facilitating subsequent heating recovery, wherein the desiccant in the inner mesh cylinder 13 is transported upward by a conveying auger, and enters the upper part of the outer mesh cylinder 14 through the discharge conduit, while the desiccant in the lower part of the outer mesh cylinder 14 enters the lower part of the inner mesh cylinder 13 under the guiding action of the inclined feed conduit 1716, thus forming a circulation, allowing the desiccant to flow, thereby having a better drying effect and facilitating subsequent heating recovery.

[0030] A guide plate 19 inclined toward the feed conduit is disposed at the lower portion of the outer net cylinder 14 , so as to facilitate the desiccant to flow back into the inner net cylinder 13 .

[0031] The drying mechanism includes a heating wire 20 disposed on the periphery of the drying cylinder 14 and provided on the drying cylinder 14, and the heating temperature of the heating wire 20 is 50-60 degrees Celsius. The desiccant in the drying cylinder 14 is granular, and its diameter is larger than the mesh aperture of the inner net cylinder 13 and the outer net cylinder 14.

[0032] Among them, a metal heat sink 21 is also provided in the equipment box 1, and the electrical devices are all installed on the metal heat sink 21, and the back side of the metal heat sink 21 is attached to a semiconductor refrigeration sheet 22, and the cooling surface of the semiconductor refrigeration sheet 22 is attached to the surface of the metal heat sink 21. A temperature sensor 23 is provided in the equipment box 1, and a controller 24 is also provided in the equipment box 1. The temperature sensor 23 and the semiconductor refrigeration sheet 22 are electrically connected to the controller 24. When the temperature sensor detects that the temperature in the equipment box 1 reaches the set heat dissipation value, the controller 24 controls the semiconductor refrigeration sheet 22 to perform cooling work, thereby performing cooling and heat dissipation, and ensuring a better heat dissipation effect on the gas in the device room.

[0033] The switching pipeline 11 includes a first air inlet pipe 25 and a second air inlet pipe 26 arranged at the air inlet end of the drying cylinder 6, and a first air outlet pipe 27 and a second air outlet pipe 28 arranged at the air outlet end of the air pump 10. The first air inlet pipe 25 is provided with a first solenoid valve 29, the second air inlet pipe 26 is provided with a second solenoid valve 30, the first air outlet pipe 27 is provided with a third solenoid valve 31, and the second air outlet pipe 28 is provided with a fourth solenoid valve 32.

[0034] A method for implementing the above-mentioned moisture-proof protection device for electric equipment, when the humidity sensor 7 detects that the humidity in the device chamber 2 reaches the warning value, the air pump 10 works and controls the switching pipeline to connect the first air inlet 4 and the first air outlet 5, so that the air in the device chamber 2 is internally circulated through the drying cylinder 6;

[0035] When the desiccant in the drying cylinder 6 is restored, the switching pipeline 11 is controlled to connect the second air inlet 8 and the second air outlet 9 so that external air enters the drying cylinder 6 to ventilate and dehumidify the desiccant in the drying cylinder 6 .

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A moisture-proof protective device for electric power equipment, characterized in that: The invention comprises a sealed equipment box (1), wherein a device chamber (2) and a dehumidification chamber (3) are provided in the equipment box (1), a first air inlet (4) and a first air outlet (5) are provided between the dehumidification chamber (3) and the device chamber (2), a drying cylinder (6) and an air pump (10) are installed in the dehumidification chamber (3), a humidity sensor (7) for detecting the humidity in the device chamber (2) is provided in the device chamber (2), a second air inlet (8) and a second air outlet (9) which are connected to the outside are provided on the side wall of the dehumidification chamber (3), the drying cylinder (6) and the air pump are connected to the first air inlet (4), the first air outlet (5), the second air inlet (8) and the second air outlet (9) via a switching pipeline (11); and a drying mechanism for heating and dehumidifying the desiccant is provided on the periphery of the drying cylinder (6).

2. The moisture-proof protective device for electric power equipment according to claim 1, characterized in that: The drying cylinder (6) comprises a cylindrical cylinder body (12), and a vertically upward inner mesh cylinder (13) is provided in the middle of the cylinder body (12), and an outer mesh cylinder (14) is provided outside the inner mesh cylinder (13), the outer mesh cylinder (14) is a double mesh structure and a partition (15) is provided inside, and a ventilation gap is formed between the inner mesh cylinder (13) and the outer mesh cylinder (14).

3. The moisture-proof protective device for electric power equipment according to claim 2, characterized in that: A desiccant circulation mechanism is provided between the inner net cylinder (13) and the outer net cylinder (14), and the desiccant circulation mechanism includes a plurality of inclined feed ducts (16) provided between the bottom of the inner net cylinder (13) and the bottom of the outer net cylinder (14), and a plurality of discharge ducts (17) are provided between the upper part of the inner net cylinder (13) and the outer net cylinder (14), and a vertically upward conveying dragon (18) is provided inside the inner net cylinder (13) (13).

4. The moisture-proof protective device for electric power equipment according to claim 3, characterized in that: A material guide plate (19) inclined toward the material feed conduit is provided at the lower part of the outer net cylinder (14).

5. The moisture-proof protective device for electric power equipment according to claim 1, characterized in that: The drying mechanism comprises a heating wire (20) which is arranged on the periphery of the drying cylinder (14) and is provided on the drying cylinder (14); the heating temperature of the heating wire (20) is 50-60 degrees Celsius.

6. The moisture-proof protective device for electric power equipment according to claim 1, characterized in that: The desiccant in the drying cylinder (14) is in granular form, and its diameter is larger than the mesh apertures of the inner mesh cylinder (13) and the outer mesh cylinder (14).

7. The moisture-proof protection device and method for electric power equipment according to claim 1, characterized in that: The equipment box (1) is also provided with a metal heat sink (21), and the electrical components are all mounted on the metal heat sink (21), and the back side of the metal heat sink (21) is attached to a semiconductor cooling sheet (22), and the cooling surface of the semiconductor cooling sheet (22) is attached to the surface of the metal heat sink (21). The equipment box (1) is provided with a temperature sensor (23), and the equipment box (1) is also provided with a controller (24), and the temperature sensor (23) and the semiconductor cooling sheet (22) are both electrically connected to the controller (24). When the temperature sensor detects that the temperature in the equipment box (1) reaches a set heat dissipation value, the controller (24) controls the semiconductor cooling sheet (22) to perform cooling.

8. A method for implementing the moisture-proof protective device for electric equipment according to any one of claims 1 to 7, characterized in that: When the humidity sensor (7) detects that the humidity in the device chamber (2) reaches a warning value, the air pump (10) starts to work and controls the switching pipeline to connect the first air inlet (4) and the first air outlet (5), so that the air in the device chamber (2) is circulated internally through the drying cylinder (6); When the desiccant in the drying cylinder (6) is restored, the switching pipeline (11) is controlled to connect the second air inlet (8) and the second air outlet (9), so that external air enters the drying cylinder (6) to ventilate and dehumidify the desiccant in the drying cylinder (6).

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