CN112531478A

CN112531478A - Electric power distribution cabinet

Info

Publication number: CN112531478A
Application number: CN202011432563.XA
Authority: CN
Inventors: 冯林英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-03-19

Abstract

The invention provides an electrical power distribution cabinet, which comprises a cabinet, a semiconductor refrigeration piece, a fan, a partition plate, a waterproof breathable film, a controller and a shell, wherein the partition plate divides the inner cavity of a cabinet body into a first cavity and a second cavity, the semiconductor refrigeration piece is fixedly arranged on the partition plate, the hot end of the semiconductor refrigeration piece is positioned in the first cavity, the cold end of the semiconductor refrigeration piece is positioned in the second cavity, the two ends of the partition plate are respectively provided with an air outlet and an air inlet, the fan is fixedly arranged in the air outlet, the side wall of the waterproof breathable film is hermetically connected with the side wall of the air inlet, the side wall of the second cavity is provided with a water discharge hole, one end of the shell is in contact with the cold end of the semiconductor refrigeration piece, the other end of the. The invention can solve the problem that the existing power distribution cabinet is subjected to damp-proof dehumidification operation through the semiconductor refrigeration sheet, so that the working performance of the electric element is damaged and even short circuit is caused due to low-temperature condensation of the electric element.

Description

Electric power distribution cabinet

Technical Field

The invention relates to the technical field of electrical power distribution cabinets, in particular to an electrical power distribution cabinet.

Background

The power distribution cabinet is a common electrical device and is mainly used for mounting various circuit boards, switches, various instruments and the like. Due to the difference of installation environments, the interior of the power distribution cabinet can be wet or condensed, and thus accidents such as creepage, short circuit and the like can be easily caused. In order to effectively prevent potential safety hazards such as equipment aging, short circuit, reduction of insulation strength, secondary terminal breakdown, material mildew and corrosion of steel structural members in the power distribution cabinet, the safe operation of a power grid is ensured, and the power distribution cabinet is generally required to be subjected to moisture-proof dehumidification operation.

One of the methods for carrying out moisture-proof dehumidification operation on the power distribution cabinet is to arrange a semiconductor refrigeration piece inside the power distribution cabinet, and to enable the cold end of the semiconductor refrigeration piece to be positioned in the inner cavity of the power distribution cabinet, so that water vapor in the air inside the power distribution cabinet is in contact with the cold end of the semiconductor refrigeration piece to be condensed, and then is converted into liquid, and finally the power distribution cabinet is discharged.

Although the method can perform moisture-proof and dehumidification operation on the power distribution cabinet, the overall temperature of the power distribution cabinet can be reduced. And once the switch board temperature is too low, the electrical component is because of the low temperature condensation easily, and then leads to electrical component working property impaired and even appear the danger of short circuit.

Disclosure of Invention

Based on this, in order to solve the problem that the existing power distribution cabinet is subjected to damp-proof dehumidification operation through a semiconductor refrigeration sheet, so that the working performance of an electrical element is damaged and even short circuit is caused due to low-temperature condensation, the invention provides an electrical power distribution cabinet, which has the following specific technical scheme:

an electric power distribution cabinet comprises a cabinet, a semiconductor refrigeration piece, a fan, a partition plate, a waterproof breathable film, a controller and a shell, wherein the partition plate is fixedly installed in an inner cavity of the cabinet body and divides the inner cavity of the cabinet body into a first cavity and a second cavity, the semiconductor refrigeration piece is fixedly installed on the partition plate, a hot end of the semiconductor refrigeration piece is located in the first cavity, a cold end of the semiconductor refrigeration piece is located in the second cavity, an air outlet and an air inlet are respectively formed in two ends of the partition plate, the fan is fixedly installed in the air outlet, the peripheral edge of the waterproof breathable film is hermetically connected with the side wall of the air inlet, a drain hole is formed in the side wall, far away from the partition plate, of the second cavity, one end of the shell is in contact with the cold end of the semiconductor refrigeration piece, and the other end of the shell penetrates through the partition plate and is, the inner cavity of the shell is filled with heat-conducting silicone grease, the controller is fixedly mounted at the other end of the shell, and the outer side wall of the shell is connected with the partition plate in a sealing mode.

Further, electric switch board still includes cabinet door and first pivot, opening one side of the cabinet body is equipped with the inside outstanding protruding border, protruding border is equipped with the fluting, the cabinet door pass through first pivot with the fluting is rotated and is connected.

Furthermore, the electric power distribution cabinet further comprises a second rotating shaft, a nut column, a piston, a first spiral spring, a push rod and a spring lock, wherein a first inner cavity and a second inner cavity are arranged in the protruding edge, the spring lock is installed in the side wall of the cabinet door far away from the first inner cavity, the spring lock comprises an inner lock cylinder, one end of the second rotating shaft is fixedly connected with the inner lock cylinder, the other end of the second rotating shaft extends into the first inner cavity and is in threaded connection with the nut column, the piston is fixedly connected with one end of the nut column far away from the second rotating shaft, the piston is in sliding sealing connection with the inner wall of the first inner cavity, the first inner cavity is communicated with the second inner cavity through a first through hole, a sealed cavity is formed among the piston, the first inner cavity and the push rod, and liquid is filled in the sealed cavity, one end of the first spiral spring is fixedly connected with the side wall of the second inner cavity, the other end of the first spiral spring is fixedly connected with one end of the push rod, one end of the push rod is connected with the inner wall of the first through hole in a sliding and sealing mode, one end of the first rotating shaft extends into the second inner cavity and is provided with a clamping groove matched with the other end of the push rod.

Further, electric switch board still includes memory spring, spine portion and elastic film, still be equipped with the second through-hole in the protruding border, the one end of second through-hole with the fluting intercommunication, the other end of second through-hole with the lateral wall intercommunication of first through-hole, elastic film's peripheral edge with the lateral wall sealing connection of the other end of second through-hole, memory spring's one end with the second through-hole is kept away from the lateral wall fixed connection of first through-hole, memory spring's the other end with the one end fixed connection of spine portion, the other end of spine portion is just right elastic film.

Further, the electric power distribution cabinet further comprises a drain pipe and a switch valve, wherein the drain pipe is communicated with the drain hole, and the switch valve is fixedly installed in the drain pipe.

Furthermore, the spine part is in a conical shape, the elastic film is circular, and the diameter of the bottom surface of the spine part is smaller than that of the elastic film.

Furthermore, the side wall of the second chamber, which is far away from the partition plate, is an arc-shaped concave surface.

Further, the housing is made of an aluminum alloy material.

Further, the partition is made of insulating ceramic.

Further, the outer side wall of the shell is connected with the partition plate in a sealing mode.

The air outlet and the air inlet are respectively arranged at two ends of the partition board, and when the fan rotates, air inside the cabinet body flows in the first cavity and the second cavity in a circulating mode. Because electric elements installs in first cavity, and the hot junction of semiconductor refrigeration piece is located first cavity, so through the semiconductor refrigeration piece, can heat the inside electric elements of switch board, prevent that electric elements from because of the low temperature condensation, and then lead to electric elements working property impaired even the danger of short circuit appears.

The cold end of the semiconductor refrigeration piece is positioned in the second cavity, and air with water vapor flowing out of the first cavity flows through the cold end of the semiconductor refrigeration piece, is condensed into liquid and flows into the bottom of the second cavity, and then flows out of the power distribution cabinet through the drain hole. That is to say, through inciting somebody to action the semiconductor refrigeration piece is installed on the baffle, and makes the hot junction and the cold junction of semiconductor refrigeration piece are arranged in first cavity and second cavity respectively, not only can make the inside steam condensation of switch board become liquid, carry out dampproofing dehumidification operation to the switch board, can also overcome current switch board and carry out dampproofing dehumidification operation through the semiconductor refrigeration piece, make electrical component because of the low temperature condensation easily, and then lead to the problem that electrical component working property is impaired or even the danger of short circuit appears, can guarantee electrical component's normal work.

When the fan rotates and makes the air circulation in first cavity and the second cavity flow, the waterproof ventilated membrane that sets up in the air intake can avoid flowing into the liquid conversion of second cavity bottom and steam then flow into first cavity again, so can further overcome current switch board and carry out dampproofing dehumidification operation through the semiconductor refrigeration piece, make electrical component because of the low temperature condensation easily, and then lead to the dangerous problem of electrical component working property impaired even the short circuit appears, guarantee electrical component's normal work.

Through setting up the shell can utilize the low temperature of semiconductor refrigeration piece during operation cold junction, dispels the heat to the controller and cools down, avoids appearing the too high and problem of performance reduction of controller operating temperature, can guarantee the normal steady operation of controller. In addition, through the shell, the working temperature of the controller can be reduced, and meanwhile moisture is prevented from entering the first cavity again.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

Fig. 1 is a schematic view of an overall structure of an electrical distribution cabinet according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an overall structure of an electrical distribution cabinet according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic view of a part of the structure of an electrical distribution cabinet according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a partial structure of an electrical distribution cabinet according to an embodiment of the present invention;

fig. 6 is a schematic view of a part of a structure of an electrical distribution cabinet according to an embodiment of the present invention.

Description of reference numerals:

1. a cabinet body; 2. a semiconductor refrigeration sheet; 3. a fan; 4. a partition plate; 5. a waterproof breathable film; 6. a first chamber; 7. a second chamber; 8. an air outlet; 9. an air inlet; 10. a drain hole; 11. a cabinet door; 12. a first rotating shaft; 13. a second rotating shaft; 14. a nut post; 15. a piston; 16. a first coil spring; 17. a push rod; 18. a cylinder lock; 19. a first lumen; 20. a second lumen; 21. a first through hole; 22. a memory spring; 23. a spike portion; 24. an elastic film; 25. a second through hole; 26. a drain pipe; 27. an on-off valve; 28. a controller; 29. a humidity sensor; 30. a raised edge; 31. grooving; 32. a first round bar; 33. a top rod; 34. a third coil spring; 35. a rubber block; 36. a third lumen; 37. a groove; 38. a first stopper; 39. a second round bar; 40. a second limiting block; 41. a housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

The first embodiment is as follows:

an electrical power distribution cabinet comprises a cabinet, a semiconductor refrigeration piece 2, a fan 3, a partition plate 4, a waterproof breathable film 5, a controller 28 and a shell 41, wherein the partition plate 4 is fixedly arranged in an inner cavity of the cabinet body 1 and divides the inner cavity of the cabinet body 1 into a first cavity 6 and a second cavity 7, the semiconductor refrigeration piece 2 is fixedly arranged on the partition plate 4, a hot end of the semiconductor refrigeration piece 2 is positioned in the first cavity 6, a cold end of the semiconductor refrigeration piece 2 is positioned in the second cavity 7, two ends of the partition plate 4 are respectively provided with an air outlet 8 and an air inlet 9, the fan 3 is fixedly arranged in the air outlet 8, the peripheral edge of the waterproof breathable film 5 is hermetically connected with the side wall of the air inlet 9, a drain hole 10 is arranged on the side wall of the second cavity 7 far away from the partition plate 4, and one end of the shell 41 is in contact with the cold end of the semiconductor refrigeration piece 2, the other end of the housing 41 penetrates through the partition plate 4 and is located in the first chamber 6, the inner cavity of the housing 41 is filled with heat-conducting silicone grease, the controller 28 is fixedly installed at the other end of the housing 41, and the outer side wall of the housing 41 is connected with the partition plate 4 in a sealing mode.

The air outlet 8 and the air inlet 9 are respectively arranged at two ends of the partition plate 4, and when the fan 3 rotates, air inside the cabinet body 1 flows in the first chamber 6 and the second chamber 7 in a circulating mode. Because electric elements are installed in the first chamber 6, and the hot junction of the semiconductor refrigeration piece 2 is located in the first chamber 6, so through the semiconductor refrigeration piece 2, the electric elements in the power distribution cabinet can be heated, the electric elements are prevented from being condensed due to low temperature, and the working performance of the electric elements is further damaged or even the risk of short circuit is caused.

The cold end of the semiconductor refrigerating sheet 2 is positioned in the second chamber 7, and air with water vapor flowing out of the first chamber 6 flows through the cold end of the semiconductor refrigerating sheet 2, is condensed into liquid and flows into the bottom of the second chamber 7, and then flows out of the power distribution cabinet through the drain hole 10. That is to say, through inciting somebody to action semiconductor refrigeration piece 2 is installed on baffle 4, and make semiconductor refrigeration piece 2's hot junction and cold junction are arranged in first cavity 6 and second cavity 7 respectively, not only can make the inside steam condensation of switch board become liquid, carry out dampproofing dehumidification operation to the switch board, can also overcome current switch board and carry out dampproofing dehumidification operation through semiconductor refrigeration piece 2, make electrical component because of the low temperature condensation easily, and then lead to the dangerous problem that electrical component working property is impaired or even appears the short circuit, can guarantee electrical component's normal work.

Work as 3 fans rotate and make the air cycle in first cavity 6 and the second cavity 7 flow in, the waterproof ventilated membrane 5 that sets up in air intake 9 can avoid flowing into the liquid conversion of 7 bottoms of second cavity and then flow into first cavity 6 again, so can further overcome current switch board and carry out dampproofing dehumidification operation through semiconductor refrigeration piece 2, make electrical component because of the low temperature condensation easily, and then lead to the dangerous problem of electrical component working property impaired even short circuit appears, guarantee electrical component's normal work.

Through setting up shell 41 can utilize the low temperature of semiconductor refrigeration piece 2 during operation cold junction, dispel the heat the cooling to controller 28, avoids appearing controller 28 operating temperature too high and the problem of performance reduction, can guarantee controller 28's normal steady operation. In addition, by means of the housing 41, it is possible to reduce the operating temperature of the controller 28 while avoiding the re-entry of moisture into the first chamber 6.

Example two:

In this example, as shown in fig. 2 and fig. 3, the electrical distribution cabinet further includes a cabinet door 11, a first rotating shaft 12, a second rotating shaft 13, a nut column 14, a piston 15, a first spiral spring 16, a push rod 17, and a pin tumbler lock 18, an inwardly protruding ledge 30 is provided at one side of the opening of the cabinet body 1, a slot 31 is provided on the protruding ledge 30, and the cabinet door 11 is rotatably connected to the slot 31 through the first rotating shaft 12. The protruding edge 30 is provided with a first inner cavity 19 and a second inner cavity 20, the pin tumbler lock 18 is installed in the side wall of the first inner cavity 19 far away from the cabinet door 11, the pin tumbler lock 18 includes an inner lock cylinder, one end of the second rotating shaft 13 is fixedly connected with the inner lock cylinder, the other end of the second rotating shaft 13 extends into the first inner cavity 19 and is in threaded connection with the nut column 14, the piston 15 is fixedly connected with one end of the nut column 14 far away from the second rotating shaft 13, the piston 15 is in sliding sealed connection with the inner wall of the first inner cavity 19, the first inner cavity 19 is communicated with the second inner cavity 20 through a first through hole 21, a sealed cavity is formed among the piston 15, the first inner cavity 19 and the push rod 17, the sealed cavity is filled with a liquid, one end of the first spiral spring 16 is fixedly connected with the side wall of the first inner cavity 19 far away from the second inner cavity 20, the other end of the first spiral spring 16 is fixedly connected with one end of the push rod 17, one end of the push rod 17 is connected with the inner wall of the first through hole 21 in a sliding and sealing manner, and one end of the first rotating shaft 12 extends into the second inner cavity 20 and is provided with a clamping groove (not shown in the figure) matched with the other end of the push rod 17.

By filling the sealed chamber with liquid, it is ensured that the piston 15 slides smoothly along the side wall of the first inner chamber 19 and the push rod 17 along the inner wall of the first through hole 21. When the cabinet door 11 is closed, the cabinet door 11 is hermetically connected with the side wall of the opening edge of the cabinet body 1, so that the influence on the performance of the electrical element caused by the inflow of humid air into the inner cavity of the power distribution cabinet through the gap between the cabinet door 11 and the cabinet body 1 is prevented.

One end of the second rotating shaft 13 is rotatably connected with the side wall of the first inner cavity 19 far away from the cabinet door 11 through the inner lock cylinder, the other end of the second rotating shaft 13 is in threaded connection with the nut column 14, and one end of the nut column 14 is fixedly connected with the piston 15, so that the second rotating shaft 13 can be driven to rotate by rotating the inner lock cylinder of the spring lock 18, and the piston 15 is driven to move back and forth along the side wall of the first inner cavity 19. And first coil spring 16 set up at the lateral wall of first inner chamber 19 with between the one end of push rod 17, the one end of push rod 17 and the inner wall sliding seal of first through-hole 21 are connected, the one end of first pivot 12 be equipped with the other end assorted draw-in groove of push rod 17, it has liquid to fill in the sealed cavity, through drive piston 15 along the lateral wall round trip movement of first inner chamber 19, can make push rod 17 slide from top to bottom along the inner wall of first through-hole 21, and then make push rod 17's the other end card go into among the draw-in groove or follow break away from in the draw-in groove to prescribe a limit to the position of first pivot 12 and cabinet door 11, make things convenient for the technical staff to open cabinet door 11, clean and maintain the electric elements in the electric power distribution cabinet.

When the other end of the push rod 17 is engaged in the engaging groove, the first helical spring 16 is under tension, and its elastic force can make the push rod 17 keep a tendency to move toward the first inner cavity 19. When the first rotating shaft 12 is rotated to drive the nut post 14 and the piston 15 to move away from the first spiral spring 16, the push rod 17 moves towards the first inner cavity 19 under the elastic force of the first spiral spring 16, and the other end of the push rod 17 is disengaged from the clamping groove. At this moment, open cabinet door 11 to certain angle to rotate first rotation once more, the drive nut post 14 and piston 15 toward being close to first coil spring 16 direction removes, through liquid drive push rod 17 in the sealed cavity removes toward second inner chamber 20 direction, and then makes the other end card of push rod 17 go into in the draw-in groove, can prescribe a limit to the position of cabinet door 11, make things convenient for technical staff to clean or operation such as maintenance change to the inside electrical component of electric power distribution cabinet.

When the other end of the push rod 17 is clamped into the clamping groove or separated from the clamping groove, the first spiral spring 16 is in a stretching state all the time. When the nut column 14 and the piston 15 are driven to move away from the first spiral spring 16 by rotating the first rotating shaft 12, the push rod 17 always keeps a trend of moving toward the first inner cavity 19 under the elastic force of the first spiral spring 16, so that the push rod 17 can be smoothly separated from the clamping groove to open the cabinet door 11.

Example three:

it should be understood that this embodiment includes at least all the technical features of the above embodiments, and is further specifically described on the basis of the above embodiments.

In this embodiment, as shown in fig. 4, the electrical distribution cabinet further includes a memory spring 22, a spike portion 23, and an elastic film 24, a second through hole 25 is further disposed in the protruding edge 30, one end of the second through hole 25 is communicated with the slot 31, the other end of the second through hole 25 is communicated with the side wall of the first through hole 21, the peripheral edge of the elastic film 24 is hermetically connected with the side wall of the other end of the second through hole 25, one end of the memory spring 22 is fixedly connected with the side wall of the second through hole 25 far away from the first through hole 21, the other end of the memory spring 22 is fixedly connected with one end of the spike portion 23, and the other end of the spike portion 23 faces the elastic film 24. Specifically, the spine portion 23 may pierce the elastic membrane 24, and the memory spring 22 is made of a CuZnAl memory alloy wire and has a two-way memory effect, and the expansion and contraction temperature thereof is between 45 ℃ and 85 ℃, preferably 60 ℃. That is, when the memory spring 22 is heated and the temperature is higher than the stretching temperature, the length of the memory spring is increased, and the sharp part 23 is pushed to approach the elastic film 24 and pierce the elastic film 24. At this time, the liquid in the sealed chamber flows into the slot 31 from the broken elastic membrane 24 through the first through hole 21 and the second through hole 25, and the push rod 17 is separated from the slot under the elastic force of the first spiral spring 16.

When the fan 3 rotates and makes the air in the first chamber 6 and the second chamber 7 flow in a circulating manner, the temperature inside the power distribution cabinet is slowly increased due to the continuous operation of the semiconductor refrigerating sheet 2, so that the possibility of overhigh temperature or sounding fire of the power distribution cabinet is caused. Through setting up memory spring 22, spine portion 23 and elastic film 24, when electric power distribution cabinet high temperature or conflagration breaing out, need not to rotate interior lock core and first pivot 12 through the key, can dispel the heat or close electric power distribution cabinet door 11 that has opened in order to open electric power distribution cabinet door 11 to reach the mesh that utilizes the isolated inside air of electric power distribution cabinet of cabinet door 11 and make the inside flame of cabinet body 1 extinguish. In addition, when the electric power distribution cabinet is used for a long time and the spring lock 18 is corroded and rusted, and the electric power distribution cabinet cannot be opened through a key, the part, opposite to the groove 31, of the protruding edge 30 of the electric power distribution cabinet can be heated, so that the memory spring 22 is heated and extended, the driving spine portion 23 pierces the elastic film 24, and then the push rod 17 is separated from the clamping groove, and the closed electric power distribution cabinet is opened.

In this embodiment, the cabinet body 1 and the cabinet door 11 are made of aluminum alloy material, so that the memory spring 22 can heat up with the cabinet body 1 synchronously.

In this embodiment, the slot has a regular hexagon shape. In this way, by rotating the first rotating shaft 12, the nut post 14 and the piston 15 are driven to move toward the first coil spring 16, and the other end of the push rod 17 is driven to be inserted into the slot, so that the cabinet door 11 can be limited to three angles of 0 degree, 60 degrees, 120 degrees and 180 degrees.

In this embodiment, the spine portion 23 has a conical shape, the elastic membrane 24 has a circular shape, and the diameter of the bottom surface of the spine portion 23 is smaller than the diameter of the elastic membrane 24. In this way, when the spike 23 pierces the elastic membrane 24, the liquid in the sealed chamber can be ensured to smoothly flow into the slot 31 from the ruptured elastic membrane 24 through the first through hole 21 and the second through hole 25.

In this embodiment, the side surface of the spike 23 is provided with a plurality of dents, and the plurality of dents are parallel to the generatrix of the spike 23. By providing the indentations, it is further ensured that the liquid in the sealed chamber can smoothly flow from the ruptured elastic membrane 24 into the slot 31 via the first through hole 21 and the second through hole 25.

Example four:

In this embodiment, as shown in fig. 1, the electrical distribution cabinet further includes a drain pipe 26 and a switch valve 27, the drain pipe 26 is communicated with the drain hole 10, the switch valve 27 is fixedly installed in the drain pipe 26, and a peripheral edge of one end of the drain pipe 26 is hermetically connected with an inner side wall of the drain hole 10.

Opening said on-off valve 27 makes it possible to discharge the liquid that flows in and accumulates at the bottom of the second chamber 7 outside the cabinet. If the semiconductor chilling plate 2 is stopped and the fan 3 is rotated while the on-off valve 27 is opened, a negative pressure is formed at the bottom of the second chamber 7. So, then can make the outside air of switch board inside the switch board through the rotation of fan 3, realize the ventilation operation of switch board.

By closing the switch valve 27 and closing the cabinet door 11, the inner cavity of the power distribution cabinet can be sealed. So, not only can carry out dampproofing dehumidification operation to switch board inside, when guaranteeing that electrical component normally works, can also utilize gas insulation to seal electrical distribution cabinet improves electrical distribution cabinet's security performance.

In the present embodiment, the partition plate 4 is made of insulating ceramics. The liquid is lubricating grease or heat-conducting silicone grease. As a preferred technical solution, the liquid is heat conductive silicone grease.

In order to enable the heat-conducting silicone grease in the sealed chamber to be heated synchronously with the inner side wall of the first chamber 6, in one embodiment, the power distribution cabinet further comprises an aluminum alloy heat-conducting grid. One end of the aluminum alloy heat-conducting grid penetrates through the side wall of the sealed chamber and is in sealing connection with the side wall of the sealed chamber, and the other end of the aluminum alloy heat-conducting grid surrounds the inner side wall of the first chamber 6. Therefore, the aluminum alloy heat-conducting grid can ensure that the heat-conducting silicone grease and the inner side wall of the first chamber 6 are heated synchronously, and further improve the sensitivity of the memory spring 22.

In one embodiment, the electrical power distribution cabinet further comprises a controller 28 and a humidity sensor 29, the controller 28 is fixedly installed on the side surface of the second chamber 7 of the partition board 4 and is in contact with the semiconductor chilling plate 2, the humidity sensor 29 is fixedly installed in the first chamber 6, and the controller 28 is electrically connected with the humidity sensor 29, the semiconductor chilling plate 2, the fan 3 and the switch valve 27 respectively. The humidity sensor 29 is used to detect the humidity value of the air in the first chamber 6 and feed the humidity value back to the controller 28. The controller 28 controls the fan 3 and the semiconductor chilling plate 2 to act according to the humidity value until the humidity value of the air in the first chamber 6 is smaller than a preset humidity value. Controller 28 can install at the cold junction of semiconductor refrigeration piece 2 through aluminum alloy support, and the cold junction with the help of semiconductor refrigeration piece 2 is right controller 28 dispels the heat and cools down, guarantees controller 28's normal work.

Example five:

In this embodiment, the side wall of the second chamber 7 away from the partition plate 4 is a circular arc concave surface, and one end of the drain hole is located at the lowest point of the circular arc concave surface, so as to better collect the condensed water.

In this embodiment, as shown in fig. 1, the side wall of the housing 41 contacting the cold end of the semiconductor chilling plate 2 and the side wall contacting the controller 28 are both made of aluminum alloy, that is, the side wall of the housing 41 close to the cold end of the semiconductor chilling plate 2 and the side wall far from the cold end of the semiconductor chilling plate 2 are both made of aluminum alloy, and the other side walls of the housing 41 are made of insulating ceramic. Thus, through the shell 41 not only can be well right the controller 28 carries out the cooling operation of dispelling the heat, can also avoid appearing semiconductor refrigeration piece 2 cold junction temperature and transmitting the baffle 4 and be located the side of first cavity 6 and lead to the problem that baffle 4 is located the condensation of first cavity 6 side.

Example six:

As shown in fig. 5, in this embodiment, the electrical distribution cabinet further includes a first round rod 32, a top rod 33, a third coil spring 34 and a rubber block 35, a third inner cavity 36 is further disposed in the protruding edge 30, a groove 37 is disposed on a side wall of the slot 31 away from the first rotating shaft 12, the rubber block 35 is connected to the groove 37 in a sliding manner, one end of the third inner cavity 36 is communicated to the groove 37, one end of the top rod 33 extends into the third inner cavity 36 and is connected to a side wall of the third inner cavity 36 in a sliding and sealing manner, the other end of the top rod 33 is fixedly connected to one end of the third coil spring 34, the other end of the third coil spring 34 is fixedly connected to a side surface of the rubber block 35 away from the first rotating shaft 12, the first round rod 32 is connected to the side wall of the third inner cavity 36 close to the piston 15 in a sliding and sealing manner, and one end of the first round rod 32 extends into the third inner cavity 36, the other end of first round bar 32 stretches into in the first inner chamber 19 and be located the piston 15 with between the interior lock core, the peripheral surface of the one end of first round bar 32 is equipped with first stopper 38, form the sealed cavity of second between third inner chamber 36, first round bar 32 and the ejector pin 33, it has lubricating grease to fill in the sealed cavity of second. Specifically, when the push rod 17 is inserted into the engaging groove and the piston 15 is separated from the first round bar 32, the first round bar 32 can be restored to the original position by the rubber block 35 and the third coil spring 34. The first stopper 38 is disposed to prevent one end of the first rod 32 from being located in the third cavity 36 all the time.

When the key is inserted into the inner cylinder of the pin tumbler lock 18 to unlock the pin tumbler lock 18, the first round bar 32 can be pushed to the third inner cavity 36 by the piston 15 by rotating the inner cylinder and the first rotating shaft 12 so that the nut column 14 and the piston 15 are close to the second rotating shaft 13 under the action of the second rotating shaft 13. During the process that the first round rod 32 moves towards the third inner cavity 36, the first round rod 32 drives the ejector rod 33 and the second coil spring to approach the first rotating shaft 12 through the lubricating grease in the second sealed chamber, so that the rubber block 35 slides along the groove 37 and contacts with the first rotating shaft 12.

In the actual use process, rotate interior lock core earlier for piston 15 moves towards interior lock core direction, and push rod 17 breaks away from with the draw-in groove under the 16 spring action of first coil spring, at this moment, can freely open cabinet door 11 to arbitrary angle. After the door 11 is opened, the inner lock cylinder continues to rotate in the same direction and the piston 15 presses the first round rod 32, the rubber block 35 approaches the first rotating shaft 12 and the first rotating shaft 12 is tightly contacted together, and the position of the door 11 is further limited by the friction force between the rubber block 35 and the first rotating shaft 12.

As shown in fig. 5 and fig. 6, in this embodiment, the electrical distribution cabinet further includes a second round rod 39, the second round rod 39 is connected to the third inner cavity 36 close to the side wall of the piston 15 in a sliding and sealing manner, one end of the second round rod 39 extends into the third inner cavity 36, the other end of the second round rod 39 extends into the first inner cavity 19 and is located between the first round rod 32 and the inner lock cylinder, and a second stopper 40 is disposed on an outer peripheral surface of one end of the second round rod 39. A second round bar 39 is arranged between the first round bar 32 and the inner lock cylinder, and by continuing to rotate the inner lock cylinder and pressing the piston 15 against the second round bar 39, the ejector rod 33 can be further pushed to the first rotating shaft 12 by using the lubricating grease in the second sealed chamber, so that the elastic force of the third spiral spring 34 and the friction force between the rubber block 35 and the first rotating shaft 12 are further increased.

Preferably, the first round bar 32 and the second round bar 39 are both arc-shaped at one end of the first inner cavity 19.

Example seven:

In the present example, the electrical distribution cabinet further comprises a temperature sensor, which is fixedly mounted within the first chamber 6 and is electrically connected with the controller 28. The temperature sensor is used for detecting the temperature value inside the cabinet body 1 and feeding back the temperature value to the controller 28. When the temperature value in the cabinet body 1 is greater than the preset temperature value, the controller 28 controls the fan 3 to rotate, the switch valve 27 is opened, and the semiconductor refrigerating sheet 2 stops working. Therefore, the air outside the power distribution cabinet can be pumped to the inside of the power distribution cabinet by controlling the rotation of the fan 3, so that the ventilation operation of the power distribution cabinet is realized, or the high-temperature gas inside the first cavity 6 is discharged to the outside of the cabinet body 1 through the drain holes 10 and the drain pipes 26, and then the heat dissipation and cooling operation is performed on the power distribution cabinet until the air temperature inside the cabinet body 1 is lower than the preset temperature value.

When the fan 3 rotates and the switch valve 27 is opened, the ventilation operation or the heat dissipation and cooling operation of the power distribution cabinet depends on the material of the waterproof breathable film 5, the effective breathable area, the internal and external pressure difference and the rotating speed of the fan 3. That is to say, under the waterproof ventilated membrane 5 material condition of keeping unchangeable, realize the ventilation operation of switch board or the cooling operation of dispelling the heat and depend on the rotational speed of fan 3. Through controlling the 3 rotational speeds of fan, can selectively with the outside air pumping of switch board inside the switch board or with the inside air discharge of first chamber 6 outside the cabinet body 1.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electric power distribution cabinet comprises a cabinet body and is characterized in that the power distribution cabinet further comprises a semiconductor refrigeration piece, a fan, a partition plate, a waterproof breathable film, a controller and a shell, the partition plate is fixedly installed in an inner cavity of the cabinet body and divides the inner cavity of the cabinet body into a first cavity and a second cavity, the semiconductor refrigeration piece is fixedly installed on the partition plate, a hot end of the semiconductor refrigeration piece is located in the first cavity, a cold end of the semiconductor refrigeration piece is located in the second cavity, an air outlet and an air inlet are respectively formed in the top and the bottom of the partition plate, the fan is fixedly installed in the air outlet, the peripheral edge of the waterproof breathable film is hermetically connected with the side wall of the air inlet, a drain hole is formed in the side wall, far away from the partition plate, of the second cavity, and one end of the shell is in contact with the cold end of, the other end of the shell penetrates through the partition plate and is located in the first cavity, heat-conducting silicone grease is filled in an inner cavity of the shell, and the controller is fixedly installed at the other end of the shell.

2. The electrical distribution cabinet according to claim 1, further comprising a cabinet door and a first rotating shaft, wherein an inwardly protruding edge is disposed on one side of the opening of the cabinet body, the protruding edge is provided with a slot, and the cabinet door is rotatably connected to the slot through the first rotating shaft.

3. An electrical distribution cabinet according to any one of the preceding claims, further comprising a second rotating shaft, a nut post, a piston, a first spiral spring, a push rod, and a spring lock, wherein the protruding edge has a first inner cavity and a second inner cavity therein, the spring lock is installed in the side wall of the first inner cavity away from the cabinet door, the spring lock comprises an inner lock cylinder, one end of the second rotating shaft is fixedly connected to the inner lock cylinder, the other end of the second rotating shaft extends into the first inner cavity and is in threaded connection with the nut post, the piston is fixedly connected to one end of the nut post away from the second rotating shaft, the piston is in sliding sealed connection with the inner wall of the first inner cavity, the first inner cavity is communicated with the second inner cavity through a first through hole, and a sealed chamber is formed among the piston, the first inner cavity, and the push rod, the sealed cavity is filled with liquid, one end of the first spiral spring is far away from the first inner cavity, the side wall of the second inner cavity is fixedly connected, the other end of the first spiral spring is fixedly connected with one end of the push rod, one end of the push rod is connected with the inner wall of the first through hole in a sliding and sealing mode, one end of the first rotating shaft extends into the second inner cavity, and a clamping groove matched with the other end of the push rod is formed in the second inner cavity.

4. An electrical distribution cabinet according to any one of the preceding claims, further comprising a memory spring, a spike portion and an elastic film, wherein a second through hole is further disposed in the protruding edge, one end of the second through hole is communicated with the slot, the other end of the second through hole is communicated with the side wall of the first through hole, the peripheral edge of the elastic film is hermetically connected with the side wall of the other end of the second through hole, one end of the memory spring is fixedly connected with the side wall of the second through hole far away from the first through hole, the other end of the memory spring is fixedly connected with one end of the spike portion, and the other end of the spike portion faces the elastic film.

5. Electrical switchgear cabinet according to one of the preceding claims, further comprising a drain pipe communicating with said drain hole and a switching valve fixedly mounted in said drain pipe.

6. Electrical distribution cabinet according to one of the preceding claims, wherein said spike has a conical shape, said elastic membrane has a circular shape, and the diameter of the bottom surface of said spike is smaller than the diameter of said elastic membrane.

7. An electrical distribution cabinet according to any one of the preceding claims, wherein the side wall of said second chamber facing away from said partition is concavely curved.

8. An electrical distribution cabinet according to any of the preceding claims, wherein said housing is made of an aluminium alloy material.

9. An electrical distribution cabinet according to any one of the preceding claims, wherein said partition is made of insulating ceramic.

10. An electrical distribution cabinet according to any of the preceding claims, wherein the outer side wall of said enclosure is sealingly connected to said partition.