Explosion-proof power distribution device with oxygen exhaust and fire prevention functions

Abstract

The invention provides an explosion-proof power distribution device with oxygen exhausting and fire preventing functions, and relates to the technical field of power distribution cabinets. By arranging an oxygen exhausting structure, when a sealing plate completely covers and seals a ventilation heat dissipation groove and prevents external air from entering from the ventilation heat dissipation groove, a controller controls a first exhaust fan and a first air pipe electric control one-way valve to be opened, and the first exhaust fan and the first air pipe electric control one-way valve are opened; after the first exhaust fan is started, strong suction force is generated, air in the wiring cavity is continuously exhausted through the first exhaust pipe, then the exhausted air is conveyed to one side of the first flow conveying pipeline, meanwhile, the first air pipe electric control one-way valve is opened, a valve in the first air pipe electric control one-way valve is opened, and the air can be smoothly discharged to the outside through the second flow conveying pipeline; in this way, possible combustion-supporting air in the wiring cavity can be rapidly exhausted, the oxygen pumping and fire extinguishing effect is achieved, meanwhile, due to the fact that oxygen reduction fire extinguishing is adopted, it can be better guaranteed that equipment can be normally put into use in the follow-up process, and convenience of follow-up maintenance is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution cabinets, and more specifically, particularly relates to an explosion-proof power distribution device with oxygen exhaust and fire prevention functions. Background Art

[0002] A distribution cabinet (also called a distribution box or distribution board) is a complete set of equipment that centrally installs switches, instruments and other equipment. Its main function is to distribute electrical energy and can control, protect, measure and monitor circuits. It is generally made of metal, such as steel plates, to protect internal equipment and prevent electric shock. The outer casing usually has a certain degree of protection.

[0003] At present, the existing device (such as announcement number: CN113471831B) discloses a fireproof power distribution cabinet, which is provided with a cooling mechanism. When the temperature of the power distribution chamber in the present invention is too high, the present invention can automatically perform cooling and ventilation work, and when the power distribution chamber in the present invention catches fire, the present invention can automatically use dry powder to extinguish the fire, and the powder chamber for storing dry powder is located in the base, which lowers the center of gravity of the present invention and enhances the stability of the present invention, and the motor for driving the cooling mechanism and the fire extinguishing mechanism is far away from the power distribution chamber, so that the fire will not affect the start-up of the driving mechanism and the fire extinguishing mechanism; However, in the process of implementing the above technical solution, it was found that there are at least the following technical problems: when the distribution cabinet is in use, it adopts dry powder fire extinguishing, and a large amount of dry powder residue will be left in the distribution cabinet after the fire is extinguished. These dry powders will cover the electrical components, lines and various surfaces inside the cabinet, making the internal electrical components scrapped. At the same time, the subsequent cleaning of the interior is more troublesome, which is not conducive to subsequent maintenance. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an explosion-proof power distribution device with oxygen exhaust and fire prevention functions to solve the above problems.

[0005] An explosion-proof power distribution device with oxygen exhaust and fire prevention functions, comprising an explosion-proof power distribution device body, wherein a first through slot and a second through slot are respectively formed in the explosion-proof power distribution device body, and the second through slot is located on the side of the first through slot; An oxygen exhaust structure is fixedly installed inside the first through groove; The oxygen exhaust structure includes a first exhaust pipe, which is partially exposed outside the explosion-proof power distribution device body, a first exhaust fan is provided at the lower end of the first exhaust pipe, a first fluid delivery pipe is provided at the lower end of the first exhaust fan, and a first air duct electrically controlled one-way valve is provided at the lower end of the first fluid delivery pipe, a transfer base is fixedly installed on the surface of the explosion-proof power distribution device body, a fixing groove is opened through the inside of the transfer base, a second fluid delivery pipe is fixedly installed inside the fixing groove, the second fluid delivery pipe is located below the first air duct electrically controlled one-way valve, the second fluid delivery pipe and the first air duct electrically controlled one-way valve are fixedly installed, the second fluid delivery pipe is partially exposed outside the transfer base, and the first air outlet pipe is fixedly installed inside the second through groove.

[0006] Preferably, the first air outlet duct is partially exposed outside the explosion-proof power distribution device body, a second air duct electrically controlled one-way valve is fixedly installed on the lower end of the first air outlet duct, a third fluid delivery pipe is fixedly installed on the side wall of the second air duct electrically controlled one-way valve, a stepped through groove is opened through the interior of the transfer base, the stepped through groove is located below the fixed groove, the third fluid delivery pipe is partially located inside the stepped through groove, and the third fluid delivery pipe is fixedly installed with the stepped through groove.

[0007] Preferably, a second exhaust fan is fixedly installed on the side wall of the third fluid delivery pipeline, and the second exhaust fan is fixedly installed inside the stepped through groove. An electrically controlled carbon dioxide tank is provided on the surface of the explosion-proof power distribution device body, and the electrically controlled carbon dioxide tank is on the same side as the transfer base. The air outlet of the electrically controlled carbon dioxide tank is fixedly installed with the second exhaust fan, and an electrically controlled valve is provided on the side wall of the electrically controlled carbon dioxide tank.

[0008] Preferably, a wiring cavity is provided inside the explosion-proof power distribution device body, the wiring cavity is communicated with the first through slot and the second through slot, a smoke sensor, a carbon dioxide sensor and an oxygen sensor are fixedly mounted on the inner wall of the wiring cavity, and the smoke sensor is located above the carbon dioxide sensor and the oxygen sensor.

[0009] Preferably, a cabinet door is provided on the surface of the explosion-proof power distribution device body, and ventilation and heat dissipation slots are symmetrically opened on the side walls of the explosion-proof power distribution device body, and both of the ventilation and heat dissipation slots are communicated with the wiring cavity.

[0010] Preferably, slide grooves are symmetrically opened on the side walls of the explosion-proof distribution device body, each of the slide grooves is located on both sides of the ventilation and heat dissipation grooves, a slider is slidably installed inside each of the slide grooves, a sealing plate is fixedly installed between each of the sliders, each of the sealing plates is located above the ventilation and heat dissipation grooves, and each of the sealing plates can cover the ventilation and heat dissipation grooves.

[0011] Preferably, a limit switch is provided inside the slide groove, and the limit switch is embedded and installed inside the slide groove. The probe of the limit switch is a spring press type, and the probe of the limit switch is adapted to the slider. An electric push rod is fixedly installed on the surface of the explosion-proof distribution device body, and the electric push rod is on the same side as the first through groove. Connecting rods are symmetrically fixedly installed on the output shaft of the electric push rod, and both of the connecting rods partially extend to the side wall of the explosion-proof distribution device body. Both of the connecting rods are fixedly installed on the sealing plate, and a controller is provided on the surface of the transfer base.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by setting an oxygen exhaust structure, when the sealing plate completely covers the sealed ventilation and heat dissipation slots to prevent external air from entering from the ventilation and heat dissipation slots, the controller will control the first exhaust fan and the first air duct electrically controlled non-return valve to open. After the first exhaust fan is started, a strong suction force is generated to continuously extract the air inside the wiring chamber through the first exhaust pipe, and the extracted air is then transported to one side of the first flow delivery pipe. At the same time, the first air duct electrically controlled non-return valve is opened, and its internal valve is opened, so that the air can be smoothly discharged to the outside through the second flow delivery pipe. In this way, the air in the wiring chamber that may support combustion can be quickly discharged, thereby achieving the effect of oxygen extraction and fire extinguishing. At the same time, since oxygen reduction fire extinguishing is adopted, compared with directly using dry powder fire extinguishing, it will not cause pollution to the components inside the explosion-proof power distribution device body, etc., and can better ensure that the equipment can be put into normal use later, without spending a lot of time and energy to clean up the fire extinguishing residue, so as to improve the convenience of subsequent maintenance; In the present invention, when the oxygen sensor detects that the oxygen content is lower than 15%, the controller will control the first exhaust fan and the first air duct electric control one-way valve to close, and control the electric control valve, the second exhaust fan and the second air duct electric control one-way valve to open, so that the second exhaust fan pressurizes the carbon dioxide inside the electric control carbon dioxide tank and transports it to the third flow pipeline. The carbon dioxide enters the explosion-proof power distribution device body through the second air duct electric control one-way valve and the first air outlet pipe, and fills each space, continuously maintaining an oxygen-isolated environment, which can effectively prevent the fire from rekindling, further isolate the contact between oxygen and the combustion material, and increase the fire extinguishing effect; In the present invention, by gradually setting up the first exhaust pipe, the first exhaust fan, the first flow pipeline and the first air duct electrically controlled one-way valve, the air inside the wiring chamber can be discharged through the first exhaust fan, the first exhaust pipe and the first air duct electrically controlled one-way valve to avoid the re-ignition caused by air backflow, and by gradually setting up the first air outlet pipe, the second air duct electrically controlled one-way valve, the third flow pipeline and the second exhaust fan, the stability of the air pressure and the unidirectionality of the airflow can be ensured when transporting carbon dioxide, further enhancing the reliability of the entire explosion-proof power distribution device body when dealing with fire; In the present invention, by optimizing the entire structure and layout of the device, the oxygen exhaust structure and the first air outlet pipe for conveying carbon dioxide, the second air duct electrically controlled one-way valve, the third flow pipeline, and the electrically controlled carbon dioxide tank are all integrated on the transfer base, making the overall structure compact and integrated, which is conducive to additional installation on the existing basis and convenient to use; In the present invention, when the smoke sensor detects smoke inside the wiring cavity, the controller will receive a signal and then control the electric push rod to reset. The output shaft of the electric push rod starts to drop, driving the connecting rod connected thereto to move synchronously. During the movement of the connecting rod, a radial force is generated to push the sealing plate to slide toward the ventilation and heat dissipation slots, and the ventilation and heat dissipation slots are covered to prevent the fire from being aggravated by air circulation. In the present invention, a limit switch is embedded inside the slide groove, so that when the sealing plate drives the slider to move to the bottom of the slide groove, the limit switch will be pressed, and the limit switch will immediately send a signal to the controller, and the controller will then control the electric push rod to stop moving, thereby ensuring that the sealing plate completely covers the sealed ventilation and heat dissipation groove to improve the subsequent oxygen extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the three-dimensional connection explosion structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the explosion-proof power distribution device body of the present invention; Figure 4 It is a schematic diagram of the explosion-proof structure of the explosion-proof power distribution device body of the present invention; Figure 5 It is a schematic diagram of the explosion structure of the electric push rod connection of the present invention; Figure 6 The present invention Figure 5 A magnified view of the structure at A; Figure 7 It is a schematic diagram of the transfer base connection explosion structure of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the first fluid delivery pipeline connection of the present invention; Fig. 9 is a cross-sectional view of the transfer base of the present invention; Fig.10 It is a schematic diagram of the explosion structure of the second air duct electrically controlled one-way valve connection of the present invention.

[0014] In the figure, the corresponding relationship between the component names and the figure numbers is: 11, explosion-proof distribution device body; 12, first through slot; 13, second through slot; 14, first exhaust pipe; 15, first exhaust fan; 16, first flow pipeline; 17, first air duct electric one-way valve; 18, transfer base; 19, fixed slot; 21, second flow pipeline; 22, first air outlet pipe; 23, second air duct electric one-way valve; 24, third flow pipeline; 25, stepped through slot; 26, second exhaust fan; 27, electric carbon dioxide tank; 28, electric valve; 29, wiring chamber; 31, smoke sensor; 32, carbon dioxide sensor; 33, oxygen sensor; 34, cabinet door; 35, ventilation and heat dissipation slot; 36, slide slot; 37, slider; 38, sealing plate; 39, limit switch; 41, electric push rod; 42, connecting rod; 43, controller. DETAILED DESCRIPTION

[0015] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] See also Figure 1 - Fig.10 The present invention provides an explosion-proof power distribution device with oxygen exhaust and fire prevention functions, including an explosion-proof power distribution device body 11, wherein a first through slot 12 and a second through slot 13 are respectively formed in the explosion-proof power distribution device body 11, and the second through slot 13 is located on the side of the first through slot 12; An oxygen exhaust structure is fixedly installed inside the first through groove 12; The oxygen exhaust structure includes a first exhaust pipe 14, which is partially exposed outside the explosion-proof power distribution device body 11. A first exhaust fan 15 is provided at the lower end of the first exhaust pipe 14, and a first fluid delivery pipe 16 is provided at the lower end of the first exhaust fan 15. A first air duct electrically controlled one-way valve 17 is provided at the lower end of the first fluid delivery pipe 16. A transfer base 18 is fixedly installed on the surface of the explosion-proof power distribution device body 11. A fixing groove 19 is opened through the inside of the transfer base 18, and a second fluid delivery pipe 21 is fixedly installed inside the fixing groove 19. The second fluid delivery pipe 21 is located below the first air duct electrically controlled one-way valve 17. The second fluid delivery pipe 21 is fixedly installed with the first air duct electrically controlled one-way valve 17. The second fluid delivery pipe 21 is partially exposed outside the transfer base 18, and a first air outlet pipe 22 is fixedly installed inside the second through groove 13. By optimizing the structure and layout of the device as a whole, the oxygen exhaust structure and the first air outlet pipe 22 for conveying carbon dioxide, the second air duct electrically controlled one-way valve 23, the third flow pipe 24, and the electrically controlled carbon dioxide tank 27 are all integrated on the transfer base 18, making the overall structure compact and integrated, which is convenient for additional installation on the existing basis and easy to use; By setting the oxygen exhaust structure, when the sealing plate 38 completely covers the sealed ventilation and heat dissipation slot 35 and prevents external air from entering from the ventilation and heat dissipation slot 35, the controller 43 will control the first exhaust fan 15 and the first air duct electrically controlled one-way valve 17 to open. After the first exhaust fan 15 is started, a strong suction force is generated to continuously extract the air inside the wiring chamber 29 through the first exhaust pipe 14, and the extracted air is then transported to the side of the first flow pipe 16. At the same time, the first air duct electrically controlled one-way valve 17 is opened, and its internal valve is opened, so that the air can be smoothly discharged to the outside through the second flow pipe 21, so that the air in the wiring chamber 29 that may support combustion can be quickly discharged, thereby achieving the effect of oxygen extraction and fire extinguishing. At the same time, since oxygen reduction fire extinguishing is adopted, compared with directly using dry powder fire extinguishing, it will not cause pollution to the components inside the explosion-proof distribution device body 11, etc., and can better ensure that the equipment can be put into normal use later, without spending a lot of time and energy to clean up the fire extinguishing residues, so as to improve the convenience of subsequent maintenance; By gradually setting up the first exhaust pipe 14, the first exhaust fan 15, the first fluid delivery pipe 16 and the first air duct electrically controlled one-way valve 17, the air inside the wiring chamber 29 can be discharged through the first exhaust fan 15, the first exhaust pipe 14 and the first air duct electrically controlled one-way valve 17 to avoid re-ignition caused by air backflow.

[0017] The first air outlet pipe 22 is partially exposed outside the explosion-proof power distribution device body 11, and a second air duct electrically controlled one-way valve 23 is fixedly installed at the lower end of the first air outlet pipe 22. A third fluid delivery pipe 24 is fixedly installed on the side wall of the second air duct electrically controlled one-way valve 23. A stepped through groove 25 is opened inside the transfer base 18, and the stepped through groove 25 is located below the fixed groove 19. Part of the third fluid delivery pipe 24 is located inside the stepped through groove 25, and the third fluid delivery pipe 24 is fixedly installed with the stepped through groove 25. A second exhaust fan 26 is fixedly installed on the side wall of the third fluid delivery pipe 24, and the second exhaust fan 26 is fixedly installed inside the stepped through groove 25. An electrically controlled carbon dioxide tank 27 is provided on the surface of the explosion-proof power distribution device body 11, and the electrically controlled carbon dioxide tank 27 is on the same side as the transfer base 18. The air outlet of the electrically controlled carbon dioxide tank 27 is fixedly installed with the second exhaust fan 26, and an electrically controlled valve 28 is provided on the side wall of the electrically controlled carbon dioxide tank 27; When the oxygen sensor 33 detects that the oxygen content is lower than 15%, the controller 43 will control the first exhaust fan 15 and the first air duct electric control one-way valve 17 to close, and control the electric control valve 28, the second exhaust fan 26 and the second air duct electric control one-way valve 23 to open, so that the second exhaust fan 26 pressurizes the carbon dioxide inside the electric control carbon dioxide tank 27 and transports it to the third flow pipeline 24. The carbon dioxide enters the explosion-proof power distribution device body 11 through the second air duct electric control one-way valve 23 and the first air outlet pipe 22, and fills each space, continuously maintaining an oxygen-isolated environment, which can effectively prevent the fire from rekindling, further isolate the contact between oxygen and the combustion material, and increase the fire extinguishing effect; By gradually setting up the first air outlet duct 22, the second air duct electrically controlled one-way valve 23, the third flow pipe 24 and the second exhaust fan 26, the stability of the air pressure and the unidirectionality of the airflow can be ensured when transporting carbon dioxide, further enhancing the reliability of the entire explosion-proof distribution device body 11 when dealing with fire.

[0018] The first exhaust duct 14 and the first outlet duct 22 are both fireproof and heat-insulating.

[0019] A wiring chamber 29 is provided inside the explosion-proof power distribution device body 11. The wiring chamber 29 is communicated with the first through slot 12 and the second through slot 13. A smoke sensor 31, a carbon dioxide sensor 32 and an oxygen sensor 33 are fixedly mounted on the inner wall of the wiring chamber 29. The smoke sensor 31 is located above the carbon dioxide sensor 32 and the oxygen sensor 33. By respectively arranging a smoke sensor 31, a carbon dioxide sensor 32 and an oxygen sensor 33 inside the explosion-proof distribution device body 11, it is possible to monitor the fire condition, carbon dioxide and oxygen content inside the wiring cavity 29, which is beneficial for subsequent fire extinguishing. Among them, the smoke sensor 31, the carbon dioxide sensor 32 and the oxygen sensor 33 are all fireproof.

[0020] A cabinet door 34 is provided on the surface of the explosion-proof power distribution device body 11, and ventilation and heat dissipation grooves 35 are symmetrically provided on the side wall of the explosion-proof power distribution device body 11. The two ventilation and heat dissipation grooves 35 are communicated with the wiring cavity 29, and slide grooves 36 are symmetrically provided on the side wall of the explosion-proof power distribution device body 11, each slide groove 36 is located on both sides of the ventilation and heat dissipation groove 35, and a slider 37 is slidably installed inside each slide groove 36, and a sealing plate 38 is fixedly installed between each slider 37, and each sealing plate 38 is located above the ventilation and heat dissipation groove 35, and each sealing plate 38 can cover the ventilation and heat dissipation groove 35; When the smoke sensor 31 detects smoke inside the wiring chamber 29, the controller 43 will receive a signal and then control the electric push rod 41 to reset. The output shaft of the electric push rod 41 begins to descend, driving the connecting rod 42 connected thereto to move synchronously. During the movement, the connecting rod 42 will generate a radial force to push the sealing plate 38 to slide toward the ventilation and heat dissipation slots 35 and cover the ventilation and heat dissipation slots 35 to prevent the fire from being aggravated by air circulation.

[0021] A limit switch 39 is provided inside the slide groove 36, and the limit switch 39 is embedded and installed inside the slide groove 36. The probe of the limit switch 39 is a spring-pressed type, and the probe of the limit switch 39 is adapted to the slider 37. An electric push rod 41 is fixedly installed on the surface of the explosion-proof power distribution device body 11. The electric push rod 41 is on the same side as the first through groove 12. Connecting rods 42 are symmetrically fixedly installed on the output shaft of the electric push rod 41. Both connecting rods 42 partially extend to the side wall of the explosion-proof power distribution device body 11. Both connecting rods 42 are fixedly installed with the sealing plate 38. A controller 43 is provided on the surface of the transfer base 18; By embedding a limit switch 39 inside the slide groove 36, when the sealing plate 38 drives the slider 37 to move to the bottom of the slide groove 36, the limit switch 39 will be pressed, and the limit switch 39 will immediately send a signal to the controller 43, and the controller 43 will then control the electric push rod 41 to stop moving, thereby ensuring that the sealing plate 38 completely covers the sealed ventilation and heat dissipation groove 35 to improve the subsequent oxygen extraction effect.

[0022] The first exhaust fan 15, the first air duct electrically controlled one-way valve 17, the second air duct electrically controlled one-way valve 23, the second exhaust fan 26, the electrically controlled carbon dioxide tank 27, the limit switch 39, the electric push rod 41 and the controller 43 are all powered by an external power supply.

[0023] Working principle: In the first step, when the components or circuits in the wiring chamber 29 in the explosion-proof power distribution device body 11 catch fire and smoke is generated, the smoke sensor 31 will quickly detect this situation and immediately send a signal to the controller 43. After receiving the signal, the controller 43 will immediately control the electric push rod 41 to reset, and the output shaft of the electric push rod 41 will begin to decline, driving the connecting rod 42 connected thereto to move synchronously. During the movement of the connecting rod 42, a radial force will be generated to pull the sealing plate 38 to slide in the direction of the ventilation and heat dissipation slot 35. The sealing plate 38 drives the slider 37 to slide downward in the slide slot 36, gradually covering the ventilation and heat dissipation slot 35. When the slider 37 moves to the bottom of the slide slot 36, the limit switch 39 will be pressed. The limit switch 39 immediately sends a signal to the controller 43, and the controller 43 further controls the electric push rod 41 to stop moving. At this time, the sealing plate 38 will completely cover the sealed ventilation and heat dissipation slot 35, preventing external air from entering from the slot, thereby preventing the fire from being aggravated by air circulation; In the second step, at the moment when the slider 37 hits the limit switch 39, the controller 43 will simultaneously control the first exhaust fan 15 and the first air duct electrically controlled one-way valve 17 to open. After the first exhaust fan 15 is started, it generates a strong suction force to continuously extract the air inside the wiring chamber 29 through the first exhaust pipe 14, and the extracted air is then transported to the side of the first flow pipe 16. At the same time, the first air duct electrically controlled one-way valve 17 is opened, and its internal valve is opened, so that the air can smoothly pass through the second flow pipe 21 (the second flow pipe 21 should be connected to the smoke filter device in its initial state to avoid the exhaust smoke polluting the environment) and be discharged to the outside, so that the air that may support combustion in the wiring chamber 29 can be quickly discharged to reduce the risk of fire; In the third step, as the air is extracted, the oxygen content in the wiring chamber 29 gradually decreases. When the oxygen sensor 33 detects that the oxygen content is lower than 15%, the oxygen sensor 33 will send a signal to the controller 43. After receiving the signal, the controller 43 immediately controls the first exhaust fan 15 and the first air duct electric control one-way valve 17 to close, and controls the electric control valve 28 on the electric control carbon dioxide tank 27 to open, and turns on the second exhaust fan 26 and the second air duct electric control one-way valve 23. The second exhaust fan 26 pressurizes the carbon dioxide inside the electric control carbon dioxide tank 27 and transports it to the third flow pipe 24. Carbon oxides enter the interior of the explosion-proof distribution device body 11 through the second air duct electrically controlled one-way valve 23 and the first air outlet duct 22 in sequence. When the carbon dioxide sensor 32 detects that the carbon dioxide concentration inside the wiring chamber 29 reaches 30%, the controller 43 controls the electrically controlled valve 28, the second exhaust fan 26 and the second air duct electrically controlled one-way valve 23 to close. Thereafter, the interior of the explosion-proof distribution device body 11 is left to stand for 30 to 60 minutes. Only after the internal environment is stable and the carbon dioxide has fully exerted its fire extinguishing and oxygen isolating effects, can the staff open the cabinet door 34 for subsequent inspections and maintenance operations to ensure safety.

[0024] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions, comprising an explosion-proof power distribution device body (11), characterized in that: A first through slot (12) and a second through slot (13) are respectively formed through the interior of the explosion-proof power distribution device body (11); An oxygen exhaust structure is fixedly installed inside the first through groove (12); The oxygen exhaust structure comprises a first exhaust pipe (14), the first exhaust pipe (14) is partially exposed outside the explosion-proof power distribution device body (11), a first exhaust fan (15) is provided at the lower end of the first exhaust pipe (14), a first fluid delivery pipe (16) is provided at the lower end of the first exhaust fan (15), a first air duct electrically controlled one-way valve (17) is provided at the lower end of the first fluid delivery pipe (16), a transfer base (18) is fixedly installed on the surface of the explosion-proof power distribution device body (11), a fixing groove (19) is provided through the inside of the transfer base (18), a second fluid delivery pipe (21) is fixedly installed inside the fixing groove (19), the second fluid delivery pipe (21) is located below the first air duct electrically controlled one-way valve (17), the second fluid delivery pipe (21) and the first air duct electrically controlled one-way valve (17) are fixedly installed, the second fluid delivery pipe (21) is partially exposed outside the transfer base (18), and a first air outlet pipe (22) is fixedly installed inside the second through groove (13).

2. An explosion-proof power distribution device with oxygen exhaust and fire prevention function as claimed in claim 1, characterized in that: The first air outlet pipe (22) is partially exposed outside the explosion-proof power distribution device body (11), and a second air duct electrically controlled one-way valve (23) is fixedly mounted on the lower end of the first air outlet pipe (22).

3. An explosion-proof power distribution device with oxygen exhaust and fire prevention function as claimed in claim 2, characterized in that: A third fluid delivery pipe (24) is fixedly mounted on the side wall of the second air duct electrically controlled one-way valve (23), and a stepped through groove (25) is provided through the interior of the transfer base (18).

4. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 3, characterized in that: The stepped through groove (25) is located below the fixed groove (19), the third fluid delivery pipe (24) is partially located inside the stepped through groove (25), and the third fluid delivery pipe (24) is fixedly mounted to the stepped through groove (25).

5. An explosion-proof power distribution device with oxygen exhaust and fire prevention function as claimed in claim 4, characterized in that: A second exhaust fan (26) is fixedly mounted on the side wall of the third fluid delivery pipe (24), and the second exhaust fan (26) is fixedly mounted inside the stepped through groove (25).

6. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 5, characterized in that: An electrically controlled carbon dioxide tank (27) is provided on the surface of the explosion-proof power distribution device body (11), and the electrically controlled carbon dioxide tank (27) is on the same side as the transfer base (18).

7. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 6, characterized in that: The air outlet of the electrically controlled carbon dioxide tank (27) is fixedly mounted to the second exhaust fan (26), and an electrically controlled valve (28) is provided on the side wall of the electrically controlled carbon dioxide tank (27).

8. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 7, characterized in that: A wiring cavity (29) is provided inside the explosion-proof power distribution device body (11), and the wiring cavity (29) is in communication with the first through slot (12) and the second through slot (13).

9. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 8, characterized in that: A smoke sensor (31), a carbon dioxide sensor (32) and an oxygen sensor (33) are respectively fixedly mounted on the inner wall of the wiring cavity (29).

10. An explosion-proof power distribution device with oxygen exhaust and fire prevention functions as claimed in claim 9, characterized in that: The smoke sensor (31) is located above the carbon dioxide sensor (32) and the oxygen sensor (33); a cabinet door (34) is provided on the surface of the explosion-proof power distribution device body (11); and a controller (43) is provided on the surface of the transfer base (18).

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