An automatic pressure relief device for switch cabinet

Abstract

The utility model relates to the technical field of automatic pressure relief devices for switch cabinets, and in particular to an automatic pressure relief device for switch cabinets, comprising a cooling box, a first air pipe is arranged inside the cooling box, a shunt pipe is fixedly arranged at one end of the first air pipe, and a plurality of air outlet pipes are fixedly arranged on the side of the shunt pipe. The beneficial effects of the utility model are as follows: a fan discharges hot air and open flames inside the switch cabinet into a dust removal box, and combustion debris in the gas is filtered through a filter screen, and the high-temperature gas in the dust removal box enters the shunt pipe through the first air pipe, and is then shunted to a plurality of air outlet pipes through the shunt pipe, and the gas in the air outlet pipe is shunted by a plurality of exhaust pipes, so that the high-temperature gas evenly enters the cooling water inside the cooling box, and the cooled gas is discharged into the air through a second air pipe. At this time, the gas temperature is reduced, and there is no combustion debris inside, thereby improving the safety of the device when relieving pressure on the switch cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic pressure relief devices for switch cabinets, in particular to an automatic pressure relief device for switch cabinets. Background Art

[0002] Switch cabinets are electrical equipment used to store various circuit switches and components. Some switch cabinets need to be pressurized. When the internal circuits or components of the switch cabinet overheat and burn, the high-pressure gas inside the switch cabinet needs to be quickly discharged through an automatic pressure relief device to avoid damage caused by excessive internal pressure of the switch cabinet.

[0003] The patent specification with announcement number CN215497956U discloses an automatic pressure relief device for a switch cabinet, including a switch cabinet and a support column arranged at the lower end of the switch cabinet, the switch cabinet including a cabinet body and a central processing unit arranged inside the cabinet body, an upper detection component is arranged at the upper end of one side of the interior of the cabinet body, an upper fan is arranged in the middle of the upper end of the cabinet body, a middle detection component is arranged in the middle of the interior of the cabinet body, a middle fan is arranged on one side of the middle of the cabinet body, a lower detection component is arranged at the lower end of one side of the interior of the cabinet body, and a lower fan is arranged in the middle of the lower end of the cabinet body. The beneficial effect of the utility model is that when the upper detection component detects a line combustion fault inside the cabinet body, the information is transmitted to the central processing unit, and the central processing unit unidirectionally controls the start of the upper fan to automatically relieve the pressure on the cabinet body to prevent explosion. Moreover, since the branch flow inside the cabinet body is upward, the high-temperature gas and open flame will move upward to avoid the loss of the intact instruments below by moving downward, thereby reducing the loss.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned automatic pressure relief device for switch cabinets has the following problems: the device directly discharges the hot air and open flames inside the switch cabinet through a fan. When there are flammable materials or personnel outside the switch cabinet, it is easy to cause the flammable materials to burn or people to be scalded by high-temperature gases, making the device more dangerous when relieving pressure on the switch cabinet. In view of this, an automatic pressure relief device for switch cabinets is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an automatic pressure relief device for a switch cabinet.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic pressure relief device for a switch cabinet, comprising a cooling box, a first air pipe is arranged inside the cooling box, a shunt pipe is fixedly arranged at one end of the first air pipe, a plurality of air outlet pipes are fixedly arranged on the side of the shunt pipe, a plurality of fixing holes are opened on the sides of the plurality of air outlet pipes, exhaust pipes are fixedly arranged inside the plurality of fixing holes, a second air pipe is fixedly arranged on the top of the other side of the cooling box, a dust removal box is fixedly arranged on the other end of the first air pipe, a dust collecting frame is arranged inside the dust removal box, a filter is fixedly arranged on one side of the dust collecting frame, a sealing plate is fixedly arranged on the top of the dust removal box by a plurality of screws, a third air pipe is fixedly arranged on one side of the dust removal box, a fan is arranged at one end of the third air pipe, a fourth air pipe is fixedly arranged on the air inlet of the fan, and an electric valve is arranged on the side of the fourth air pipe.

[0007] As a further description of the above technical solution: a first through hole is opened on one side of the cooling box, and the interior of the first through hole is fixedly connected to the side of the first air pipe, so that the cooling box is convenient for storing cooling water.

[0008] As a further description of the above technical solution: a drain hole is opened at the bottom end of the front side of the cooling box, a drain pipe is fixedly provided inside the drain hole, a water valve is provided on the side of the drain pipe, the drain pipe discharges the cooling water inside the cooling box, and the water valve facilitates the control of the drain pipe switch.

[0009] As a further description of the above technical solution: one end of the third air pipe is fixedly connected to the air outlet of the fan, and the bottom end of the fourth air pipe is fixedly provided with a dust collecting hopper, which facilitates expanding the air intake range of the fourth air pipe.

[0010] As a further description of the above technical solution: a liquid inlet is provided at the top of the cooling box, a liquid inlet pipe is fixedly provided inside the liquid inlet, a sealing plug is provided inside the liquid inlet pipe, the liquid inlet pipe facilitates the injection of cooling water into the cooling box, and the sealing plug facilitates the sealing of the cooling water.

[0011] As a further description of the above technical solution: a motor is fixedly provided in the middle of the front side of the cooling box, and a rotating rod is fixedly provided at one end of the motor transmission shaft, so that the motor can drive the rotating rod to rotate.

[0012] As a further description of the above technical solution: one end of the rotating rod is rotatably connected to the inside of the cooling box, and a plurality of stirring plates are fixedly provided on the side of the rotating rod, so that the rotating rod can drive the stirring plates to rotate.

[0013] As a further description of the above technical solution: a placement groove is provided on the front of the cooling box, a sealed bearing is provided inside the placement groove, and the inside of the placement groove is rotatably connected to the side of the motor drive shaft through the sealed bearing. The sealed bearing facilitates improving the sealing of the connection between the motor drive shaft and the cooling box.

[0014] The utility model has the following beneficial effects:

[0015] The utility model is designed to provide an automatic pressure relief device for a switch cabinet. Through design coordination, a fan discharges hot air and open flames inside the switch cabinet into a dust removal box, and burnt debris in the gas is filtered through a filter. The high-temperature gas in the dust removal box enters the shunt pipe through a first air pipe, and then is shunted to a plurality of air outlet pipes through the shunt pipe. The gas in the air outlet pipe is shunted by a plurality of exhaust pipes, so that the high-temperature gas evenly enters the cooling water inside the cooling box. The cooling water and the high-temperature gas are heat-exchanged, so that the high-temperature gas can be quickly cooled. The cooled gas is discharged into the air through a second air pipe. At this time, the gas temperature is reduced, and there is no burnt debris inside, thereby improving the safety of the device when relieving pressure on the switch cabinet.

[0016] The utility model designs an automatic pressure relief device for a switch cabinet. Through design coordination, when high-temperature gas enters the cooling box through the exhaust pipe, the water temperature near the rising path of the high-temperature gas is higher, while the water temperature in other areas is lower, thereby reducing the cooling efficiency of the cooling water in the cooling box for the gas. The motor is started, and the transmission shaft of the motor drives the rotating rod to rotate. The connection between the cooling box and the motor rotating shaft is sealed by a sealing bearing to avoid leakage of cooling water. When the rotating rod rotates, it drives a plurality of stirring plates to rotate, and the plurality of stirring plates stir the cooling water in the cooling box, thereby increasing the flow rate of the cooling water in the cooling box, accelerating the heat exchange rate between the cooling water in different areas, thereby making the cooling water temperature in each area uniform, which is convenient for improving the heat absorption efficiency of the cooling water for the high-temperature gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the dust removal box of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the cooling box of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the sealed bearing of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the exhaust pipe of the utility model.

[0022] Legend:

[0023] 1. Cooling box; 2. First air pipe; 3. Diverter pipe; 4. Air outlet pipe; 5. Exhaust pipe; 6. Second air pipe; 7. Dust removal box; 8. Dust collecting frame; 9. Filter; 10. Sealing plate; 11. Third air pipe; 12. Fan; 13. Fourth air pipe; 14. Electric valve; 15. Drain pipe; 16. Water valve; 17. Inlet pipe; 18. Sealing plug; 19. Motor; 20. Rotating rod; 21. Stirring plate; 22. Sealed bearing; 23. Dust hopper. DETAILED DESCRIPTION

[0024] Reference Figure 1-Figure 5 The utility model provides an automatic pressure relief device for a switch cabinet: comprising a cooling box 1, a first air pipe 2 is arranged inside the cooling box 1, the first air pipe 2 is convenient for discharging the gas in the dust removal box 7 into the shunt pipe 3, a shunt pipe 3 is fixedly arranged at one end of the first air pipe 2, the shunt pipe 3 is convenient for shunting the gas in the first air pipe 2 into a plurality of outlet pipes 4, a plurality of outlet pipes 4 are fixedly arranged on the side of the shunt pipe 3, a plurality of fixed holes are opened on the side of the plurality of outlet pipes 4, exhaust pipes 5 are fixedly arranged inside the plurality of fixed holes, the exhaust pipes 5 are convenient for further shunting the gas in the outlet pipe 4, thereby increasing the contact area between the gas and the cooling water inside the cooling box 1, A second air pipe 6 is fixedly provided at the top of the other side of the cooling box 1, and a dust removal box 7 is fixedly provided at the other end of the first air pipe 2. The dust removal box 7 is convenient for limiting the filter screen 9 and the dust collecting frame 8. A dust collecting frame 8 is provided inside the dust removal box 7, and a filter screen 9 is fixedly provided on one side of the dust collecting frame 8. The filter screen 9 is convenient for filtering combustion debris in the gas. A sealing plate 10 is fixedly provided on the top of the dust removal box 7 by a plurality of screws. The sealing plate 10 is convenient for sealing the dust removal box 7. A third air pipe 11 is fixedly provided on one side of the dust removal box 7, and a fan 12 is provided at one end of the third air pipe 11. A fourth air pipe 13 is fixedly provided at the air inlet of the fan 12, and an electric valve 14 is provided on the side of the fourth air pipe 13.

[0025] As a further implementation scheme of the above technical scheme: a first through hole is opened on one side of the cooling box 1, and the interior of the first through hole is fixedly connected to the side of the first air pipe 2, so that the cooling box 1 is convenient for storing cooling water.

[0026] As a further implementation scheme of the above technical scheme: a drain hole is opened at the bottom end of the front side of the cooling box 1, a drain pipe 15 is fixedly provided inside the drain hole, a water valve 16 is provided on the side of the drain pipe 15, the drain pipe 15 discharges the cooling water inside the cooling box 1, and the water valve 16 facilitates the control of the switch of the drain pipe 15.

[0027] As a further implementation scheme of the above technical scheme: one end of the third air pipe 11 is fixedly connected to the air outlet of the fan 12, and a dust hopper 23 is fixedly provided at the bottom end of the fourth air pipe 13, which facilitates expanding the air intake range of the fourth air pipe 13.

[0028] As a further implementation scheme of the above technical scheme: a liquid inlet is opened at the top of the cooling box 1, a liquid inlet pipe 17 is fixedly provided inside the liquid inlet, a sealing plug 18 is provided inside the liquid inlet pipe 17, the liquid inlet pipe 17 is convenient for injecting cooling water into the cooling box 1, and the sealing plug 18 is convenient for sealing the cooling water.

[0029] During specific implementation: the dust hopper 23 is arranged inside the switch cabinet, the fourth air pipe 13 is fixed on the side of the switch cabinet, the fan 12 is fixed on the side of the switch cabinet, and the temperature change inside the switch cabinet is sensed by the detection component. When the temperature inside the switch cabinet rises, the detection component transmits a signal to the central processor, and the central processor controls the fan 12, the electric valve 14 and the motor 19 to start. The fan 12 generates suction, and the hot air and open flame inside the switch cabinet are sucked into the fan 12 through the fourth air pipe 13. The suction range of the fourth air pipe 13 is increased by the dust hopper 23, and the hot air and open flame in the fan 12 enter the dust removal box 7 through the third air pipe 11. The combustion debris in the gas is filtered through the filter 9 to prevent the debris from entering the air and being Inhalation by personnel affects the health of operators, and debris falls into the dust collecting frame 8. After the switch cabinet is depressurized, the sealing plate 10 can be removed, the dust collecting frame 8 can be taken out, and the debris can be processed. The high-temperature gas in the dust removal box 7 enters the diversion pipe 3 through the first air pipe 2, and then is diverted to several outlet pipes 4 through the diversion pipe 3. The gas in the outlet pipe 4 is diverted by several exhaust pipes 5, so that the high-temperature gas evenly enters the cooling water inside the cooling box 1, and heat is exchanged between the cooling water and the high-temperature gas, so that the high-temperature gas can be quickly cooled down. The cooled gas will be discharged into the air through the second air pipe 6. At this time, the gas temperature is reduced and there is no burning debris inside, which improves the safety of the device when depressurizing the switch cabinet.

[0030] As a further implementation scheme of the above technical scheme: a motor 19 is fixedly provided in the middle of the front of the cooling box 1, and a rotating rod 20 is fixedly provided at one end of the transmission shaft of the motor 19, so that the motor 19 can drive the rotating rod 20 to rotate.

[0031] As a further implementation scheme of the above technical scheme: one end of the rotating rod 20 is rotatably connected to the inside of the cooling box 1, and a plurality of stirring plates 21 are fixedly provided on the side of the rotating rod 20, so that the rotating rod 20 can drive the stirring plates 21 to rotate.

[0032] As a further implementation scheme of the above technical scheme: a placement groove is opened on the front of the cooling box 1, and a sealed bearing 22 is arranged inside the placement groove. The inside of the placement groove is rotatably connected to the side of the motor 19 drive shaft through the sealed bearing 22. The sealed bearing 22 facilitates improving the sealing of the connection between the motor 19 drive shaft and the cooling box 1.

[0033] During specific implementation: when high-temperature gas enters the cooling box 1 through the exhaust pipe 5, the water temperature near the rising path of the high-temperature gas is relatively high, while the water temperature in other areas is relatively low, which reduces the cooling efficiency of the cooling water in the cooling box 1 for the gas. The motor 19 is started, and the transmission shaft of the motor 19 drives the rotating rod 20 to rotate. The connection between the cooling box 1 and the rotating shaft of the motor 19 is sealed by the sealing bearing 22 to prevent cooling water leakage. When the rotating rod 20 rotates, it will drive a number of stirring plates 21 to rotate. The several stirring plates 21 stir the cooling water in the cooling box 1, thereby increasing the flow rate of the cooling water in the cooling box 1 and accelerating the heat exchange rate between the cooling water in different areas, so that the cooling water temperature in each area is uniform, which is convenient for improving the heat absorption efficiency of the cooling water for the high-temperature gas.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are 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 make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic pressure relief device for a switch cabinet, comprising a cooling box (1), characterized in that: A first air pipe (2) is provided inside the cooling box (1), a shunt pipe (3) is fixedly provided at one end of the first air pipe (2), a plurality of air outlet pipes (4) are fixedly provided on the side of the shunt pipe (3), a plurality of fixing holes are provided on the sides of the plurality of air outlet pipes (4), exhaust pipes (5) are fixedly provided inside the plurality of fixing holes, a second air pipe (6) is fixedly provided at the top end of the other side of the cooling box (1), a dust removal box (7) is fixedly provided at the other end of the first air pipe (2), and A dust collecting frame (8) is provided inside the dust collecting box (7), a filter screen (9) is fixedly provided on one side of the dust collecting frame (8), a sealing plate (10) is fixedly provided on the top of the dust collecting box (7) by means of a plurality of screws, a third air pipe (11) is fixedly provided on one side of the dust collecting box (7), a fan (12) is provided at one end of the third air pipe (11), a fourth air pipe (13) is fixedly provided at the air inlet of the fan (12), and an electric valve (14) is provided on the side of the fourth air pipe (13).

2. The automatic pressure relief device for a switch cabinet according to claim 1, characterized in that: A first through hole is provided on one side of the cooling box (1), and the interior of the first through hole is fixedly connected to the side of the first air pipe (2).

3. The automatic pressure relief device for a switch cabinet according to claim 1, characterized in that: A drainage hole is provided at the bottom end of the front side of the cooling box (1), a drainage pipe (15) is fixedly provided inside the drainage hole, and a water valve (16) is provided on the side of the drainage pipe (15).

4. The automatic pressure relief device for a switch cabinet according to claim 1, characterized in that: One end of the third air pipe (11) is fixedly connected to the air outlet of the fan (12), and a dust collecting hopper (23) is fixedly provided at the bottom end of the fourth air pipe (13).

5. The automatic pressure relief device for a switch cabinet according to claim 1, characterized in that: The top of the cooling box (1) is provided with a liquid inlet, a liquid inlet pipe (17) is fixedly arranged inside the liquid inlet, and a sealing plug (18) is arranged inside the liquid inlet pipe (17).

6. The automatic pressure relief device for a switch cabinet according to claim 5, characterized in that: A motor (19) is fixedly provided in the middle of the front side of the cooling box (1), and a rotating rod (20) is fixedly provided at one end of the transmission shaft of the motor (19).

7. The automatic pressure relief device for a switch cabinet according to claim 6, characterized in that: One end of the rotating rod (20) is rotatably connected to the interior of the cooling box (1), and a plurality of stirring plates (21) are fixedly provided on the side of the rotating rod (20).

8. The automatic pressure relief device for a switch cabinet according to claim 7, characterized in that: The front side of the cooling box (1) is provided with a placement groove, the interior of the placement groove is provided with a sealing bearing (22), and the interior of the placement groove is rotationally connected to the side of the transmission shaft of the motor (19) via the sealing bearing (22).

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