High-low voltage switch cabinet with explosion-proof function

Abstract

The utility model relates to the field of switch cabinets, and discloses a high-low voltage switch cabinet with an explosion-proof function, which comprises a gas tank, the gas tank is fixed on the top surface of a switch cabinet shell, one side of the gas tank is provided with a mounting hole, an output pipe is fixed in the mounting hole, an electric valve is arranged on the output pipe, and the electric valve is connected with the gas tank. A threaded hole is formed in the top surface of the gas tank, a sealing plug is rotationally arranged in the threaded hole, an elastic ring is fixed to the surface of the sealing plug, the surface of the elastic ring is in interference fit with the inner wall surface of the threaded hole, a fixing hole is formed in the top surface of the switch cabinet shell, and the other end of the output pipe is fixed to the inner wall surface of the fixing hole. According to the high-low voltage switch cabinet, oxygen needs to be consumed during flame combustion, so that the carbon dioxide filled in the switch cabinet shell can restrain the flame combustion and even extinguish the flame, further spreading of possible combustion or explosion is prevented, and the safety of the high-low voltage switch cabinet during use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a high and low voltage switch cabinet with explosion-proof function. Background Art

[0002] The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and energy conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, mutual inductors and various protective devices. High and low voltage switchgear is a type of switchgear. The existing high and low voltage switchgear can be used indoors or outdoors, such as in mines.

[0003] According to the Chinese patent with publication number: CN218887901U, a shockproof and explosion-proof high and low voltage switch cabinet includes a switch cabinet, the switch cabinet is internally bolted with a mounting frame, the inner side surfaces of the front and rear ends of the mounting frame are fixedly connected with straight slide grooves, the inner walls of the straight slide grooves are movably connected with a platform, the front and rear sides of the platform are fixedly connected with springs, the front and rear sides of the platform are fixedly connected with moving columns, the top of the outer side of the moving column is fixedly connected with a damping disc, the outer curved surface of the damping disc is movably connected with a fixed pipe, the upper end surface of the platform is fixedly connected with a mounting cabinet, the end surfaces of both sides of the mounting cabinet are provided with air vents, exhaust fans are installed inside the air vents, a threading tube is provided at the lower part of the rear end surface of the mounting cabinet, the inner wall of the threading tube is bonded with fireproof sealing mud, a cabinet door is hinged at the front end of the mounting cabinet, and an observation window is provided at the upper end of the cabinet door.

[0004] In the above scheme, the convection exhaust formed by the exhaust fan and the air vent fingertips is used for cooling and heat dissipation, which still has the following disadvantages: when an open flame is generated inside the switch cabinet, only the convection exhaust for cooling and heat dissipation may not be able to extinguish and suppress the spread of the flame, which may cause the combustion or explosion to spread further. Utility Model Content

[0005] The utility model aims to provide a high and low voltage switch cabinet with explosion-proof function, so as to solve the problem that only using convection exhaust for cooling and heat dissipation may not be able to extinguish and suppress the spread of flames, which may cause further spread of combustion or explosion.

[0006] In order to achieve the above-mentioned utility model object, the utility model adopts the following technical scheme: a high and low voltage switch cabinet with explosion-proof function, including a gas box, the gas box is fixed on the top surface of the switch cabinet shell, a mounting hole is opened on one side of the gas box, an output pipe is fixed inside the mounting hole, an electric valve is arranged on the output pipe, a threaded hole is opened on the top surface of the gas box, a sealing plug is rotatably arranged inside the threaded hole, an elastic ring is fixed on the surface of the sealing plug, the surface of the elastic ring is interference fit with the inner wall surface of the threaded hole, a fixing hole is opened on the top surface of the switch cabinet shell, the other end of the output pipe is fixed to the inner wall surface of the fixing hole, a sliding frame is slidably arranged inside the switch cabinet shell, a connecting hole is opened on the top surface of the sliding frame, a cabinet door is flipped on one side of the switch cabinet shell, the switch cabinet shell and the cabinet door are rotatably arranged through hinges, a PLC controller is fixed on one side of the cabinet door, and a temperature sensor is arranged on one side of the cabinet door.

[0007] Preferably, two air inlet holes are provided on the inner bottom surface of the switch cabinet shell, two fans are fixed on the bottom surface of the switch cabinet shell, the surface of the fan exhaust duct is fixed to the inner wall surface of the air inlet hole, two input holes are provided on the bottom surface of the sliding frame, and a number of air holes are respectively provided on both sides of the switch cabinet shell, and dust nets are fixed inside the air holes.

[0008] Preferably, two sliding grooves are respectively provided on the top surface and the bottom surface of the switch cabinet shell, and a plurality of fixing plates are respectively fixed on the top surface and the bottom surface of the sliding frame, wherein two of the fixing plates form a group, and rollers are rotatably arranged between each group of the fixing plates.

[0009] Preferably, a plurality of partition plates are fixed inside the sliding frame, and a wire opening is formed on the top surface of the partition plates.

[0010] Preferably, an observation port is provided on one side of the cabinet door, and a transparent plate is fixed inside the observation port.

[0011] Preferably, support columns are fixed at the four corners of the bottom surface of the switch cabinet housing, and anti-slip pads are fixed at the bottom ends of the support columns.

[0012] Compared with the prior art, the high and low voltage switch cabinet with explosion-proof function adopting the above technical solution has the following beneficial effects:

[0013] 1. The staff will add dry ice to the inside of the gas box. When the high and low voltage switchgear is in working state, as the equipment inside the switchgear shell runs, heat will slowly accumulate. As the heat accumulates, the temperature inside the switchgear shell will rise. The temperature change inside the switchgear shell will be detected by the temperature sensor. When the temperature inside the switchgear shell exceeds the safety value, the temperature sensor will send a signal to the PLC controller, and then the PLC controller will control the electric valve to open. At this time, the carbon dioxide generated by the volatilization of dry ice in the gas box will be injected into the inside of the switchgear shell through the output pipe. Due to the heavy mass of carbon dioxide, carbon dioxide will naturally settle inside the switchgear shell. As carbon dioxide fills into the inside of the switchgear shell, the oxygen content inside the switchgear shell decreases. Since the combustion of flames requires oxygen, the carbon dioxide filling the switchgear shell will inhibit the combustion of the flame, or even extinguish the flame, preventing the possible combustion or explosion from spreading further, thereby increasing the safety of the high and low voltage switchgear when in use.

[0014] Second, various devices in the switch cabinet will be installed on the top surface of the partition plate, and the wires of the equipment can pass through the wire port, which can increase the space utilization rate in the switch cabinet shell and increase the regularity of the wires. When the equipment is damaged, the staff will first open the cabinet door, and then the staff will pull the sliding frame out of the switch cabinet shell. Since the sliding frame is hollow all around, it increases the convenience of repairing the equipment;

[0015] 3. When the equipment inside the high and low voltage switch cabinet is working normally, the staff can observe the operation of the equipment inside the switch cabinet casing through the transparent plate. Since the height of the support column is higher than the height of the fan, the fan can be lifted off the ground to prevent the fan from sucking dust on the ground into the switch cabinet casing, thereby preventing short circuit caused by excessive dust in the switch cabinet casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 It is an exploded perspective schematic diagram of an embodiment.

[0018] Figure 3 It is a schematic diagram of the explosion of the air box and the elastic ring in the embodiment.

[0019] Figure 4 It is an exploded diagram of the sliding frame and the fixed plate in the embodiment.

[0020] In the figure: 1. switch cabinet shell; 2. air box; 3. output pipe; 4. fixing hole; 5. sliding frame; 6. connecting hole; 7. mounting hole; 8. electric valve; 9. threaded hole; 10. sealing plug; 11. elastic ring; 12. cabinet door; 13. observation port; 14. transparent plate; 15. air inlet; 16. fan; 17. input hole; 18. sliding groove; 19. fixing plate; 20. roller; 21. partition plate; 22. wire port; 23. air vent; 24. dust net; 25. support column; 26. anti-slip pad. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 and Figure 3 As shown, a high and low voltage switch cabinet with explosion-proof function includes an air box 2, which is fixed on the top surface of the switch cabinet shell 1, a mounting hole 7 is opened on one side of the air box 2, an output pipe 3 is fixed inside the mounting hole 7, and an electric valve 8 is arranged on the output pipe 3, a threaded hole 9 is opened on the top surface of the air box 2, a sealing plug 10 is rotatably arranged inside the threaded hole 9, an elastic ring 11 is fixed on the surface of the sealing plug 10, and the surface of the elastic ring 11 is interference fit with the inner wall surface of the threaded hole 9, a fixing hole 4 is opened on the top surface of the switch cabinet shell 1, and the other end of the output pipe 3 is fixed to the inner wall surface of the fixing hole 4, a sliding frame 5 is slidably arranged inside the switch cabinet shell 1, and a connecting hole 6 is opened on the top surface of the sliding frame 5, a cabinet door 12 is flipped and arranged on one side of the switch cabinet shell 1, the switch cabinet shell 1 and the cabinet door 12 are rotatably arranged through hinges, a PLC controller is fixed on one side of the cabinet door 12, and a temperature sensor is arranged on one side of the cabinet door 12.

[0023] During use, the staff will add dry ice to the inside of the gas box 2. When the high and low voltage switch cabinets are in working condition, as the equipment inside the switch cabinet shell 1 runs, heat will slowly accumulate. As the heat accumulates, the temperature inside the switch cabinet shell 1 will rise. The temperature change inside the switch cabinet shell 1 will be detected by the temperature sensor. When the temperature inside the switch cabinet shell 1 exceeds the safety value, the temperature sensor will send a signal to the PLC controller, and then the PLC controller will control the electric valve 8 to open. At this time, the carbon dioxide generated by the volatilization of dry ice in the gas box 2 will be injected into the inside of the switch cabinet shell 1 through the output pipe 3. Due to the heavy mass of carbon dioxide, carbon dioxide will naturally settle inside the switch cabinet shell 1. As carbon dioxide fills into the inside of the switch cabinet shell 1, the oxygen content inside the switch cabinet shell 1 decreases. Since the combustion of flames requires oxygen, the carbon dioxide filling the switch cabinet shell 1 will inhibit the combustion of the flame, or even extinguish the flame, preventing the possible combustion or explosion from spreading further, thereby increasing the safety of the high and low voltage switch cabinets when in use.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, two air inlet holes 15 are provided on the inner bottom surface of the switch cabinet housing 1, two fans 16 are fixed to the bottom surface of the switch cabinet housing 1, the surface of the exhaust duct of the fan 16 is fixed to the inner wall surface of the air inlet hole 15, two input holes 17 are provided on the bottom surface of the sliding frame 5, a plurality of air holes 23 are provided on both sides of the switch cabinet housing 1, a dustproof net 24 is fixed inside the air hole 23, two sliding grooves 18 are provided on the top and bottom surfaces of the switch cabinet housing 1, a plurality of fixed plates 19 are fixed on the top and bottom surfaces of the sliding frame 5, two of the fixed plates 19 form a group, and a roller 20 is rotatably arranged between each group of fixed plates 19, a plurality of partition plates 21 are fixed inside the sliding frame 5, and a wire opening 22 is provided on the top surface of the partition plate 21.

[0025] During use, various devices in the switch cabinet will be installed on the top surface of the partition plate 21, and the wires of the devices can pass through the wire opening 22, which can increase the space utilization in the switch cabinet housing 1 while also increasing the regularity of the wires. When the equipment is damaged, the staff will first open the cabinet door 12, and then the staff will pull the sliding frame 5 out of the interior of the switch cabinet housing 1. Since the sliding frame 5 is hollow on all sides, it is more convenient to repair the equipment.

[0026] like Figure 1 and Figure 2 As shown, an observation port 13 is provided on one side of the cabinet door 12 , a transparent plate 14 is fixed inside the observation port 13 , support columns 25 are fixed at the four corners of the bottom surface of the switch cabinet housing 1 , and anti-slip pads 26 are fixed at the bottom ends of the support columns 25 .

[0027] During use, when the equipment inside the high and low voltage switch cabinets is working normally, the staff can observe the operation of the equipment inside the switch cabinet casing 1 through the transparent plate 14. Since the height of the support column 25 is higher than the height of the fan 16, the fan 16 can be lifted off the ground to prevent the fan 16 from sucking dust on the ground into the interior of the switch cabinet casing 1, thereby preventing excessive dust in the switch cabinet casing 1 from causing a short circuit.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high and low voltage switch cabinet with explosion-proof function, comprising a gas box (2), wherein the gas box (2) is fixed to the top surface of the switch cabinet housing (1), characterized in that: A mounting hole (7) is provided on one side of the gas box (2), an output pipe (3) is fixed inside the mounting hole (7), an electric valve (8) is provided on the output pipe (3), a threaded hole (9) is provided on the top surface of the gas box (2), a sealing plug (10) is rotatably provided inside the threaded hole (9), an elastic ring (11) is fixed on the surface of the sealing plug (10), the surface of the elastic ring (11) is interference fit with the inner wall surface of the threaded hole (9), and a threaded hole (9) is provided on the top surface of the switch cabinet housing (1). A fixing hole (4) is provided, the other end of the output pipe (3) is fixed to the inner wall surface of the fixing hole (4), a sliding frame (5) is slidably arranged inside the switch cabinet shell (1), a connecting hole (6) is opened on the top surface of the sliding frame (5), a cabinet door (12) is flipped and arranged on one side of the switch cabinet shell (1), the switch cabinet shell (1) and the cabinet door (12) are rotatably arranged by hinges, a PLC controller is fixed on one side of the cabinet door (12), and a temperature sensor is arranged on one side of the cabinet door (12).

2. The high and low voltage switch cabinet with explosion-proof function according to claim 1 is characterized in that: The inner bottom surface of the switch cabinet housing (1) is provided with two air inlet holes (15), the bottom surface of the switch cabinet housing (1) is fixed with two fans (16), the surface of the exhaust pipe of the fan (16) is fixed to the inner wall surface of the air inlet hole (15), the bottom surface of the sliding frame (5) is provided with two input holes (17), and the two sides of the switch cabinet housing (1) are respectively provided with a plurality of air holes (23), and a dustproof net (24) is fixed inside the air hole (23).

3. The high and low voltage switch cabinet with explosion-proof function according to claim 1 is characterized in that: The top surface and the bottom surface of the switch cabinet housing (1) are respectively provided with two sliding grooves (18); the top surface and the bottom surface of the sliding frame (5) are respectively fixed with a plurality of fixing plates (19); two of the fixing plates (19) form a group; and rollers (20) are rotatably arranged between each group of the fixing plates (19).

4. The high and low voltage switch cabinet with explosion-proof function according to claim 1 is characterized in that: A plurality of partition plates (21) are fixed inside the sliding frame (5), and a wire opening (22) is provided on the top surface of the partition plate (21).

5. The high and low voltage switch cabinet with explosion-proof function according to claim 1 is characterized in that: An observation port (13) is provided on one side of the cabinet door (12), and a transparent plate (14) is fixed inside the observation port (13).

6. The high and low voltage switch cabinet with explosion-proof function according to claim 1, characterized in that: Support columns (25) are respectively fixed at the four corners of the bottom surface of the switch cabinet housing (1), and anti-slip pads (26) are fixed at the bottom ends of the support columns (25).

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