CN212784291U - Positive pressure type explosion-proof power distribution cabinet - Google Patents
Positive pressure type explosion-proof power distribution cabinet Download PDFInfo
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- CN212784291U CN212784291U CN202021769318.3U CN202021769318U CN212784291U CN 212784291 U CN212784291 U CN 212784291U CN 202021769318 U CN202021769318 U CN 202021769318U CN 212784291 U CN212784291 U CN 212784291U
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Abstract
The utility model discloses a positive pressure type explosion-proof power distribution cabinet, which comprises a hollow cabinet body, wherein the interior of the cabinet body is connected with electrical equipment; the outer surface of the cabinet body is coated with a protective shell; the lower surface of the cabinet body is connected with a hollow equipment cabin, and the bottom surface of the inner wall of the equipment cabin is connected with a cooling system and an air exchange system; the air exchange system comprises an air pump connected with the bottom surface of the equipment cabin, the air inlet end of the air pump is connected with an air inlet pipe, and one end of the air inlet pipe extends out of the equipment cabin; the side surface of the equipment cabin is provided with heat dissipation holes, and the inner walls of the heat dissipation holes are provided with exhaust fans; the side surface of the cabinet body is connected with a controller, and the controller comprises a control panel and a microprocessor; the inner wall of the cabinet body is connected with a plurality of temperature sensors which are electrically connected with the controller. The device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires explosive problem, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
Description
Technical Field
The utility model belongs to the technical field of the switch board, in particular to explosion-proof switch board of positive pressure type.
Background
The power distribution cabinet, the lighting power distribution cabinet and the metering cabinet are final-stage equipment of a power distribution system, and the power distribution cabinet is a general name of a motor control center. The power distribution cabinet is used in the occasions with dispersed loads and less loops; the motor control center is used for occasions with concentrated loads and more loops. They distribute the power of a certain circuit of the upper-level distribution equipment to the nearby loads. This level of equipment should provide protection, monitoring and control of the load.
The existing power distribution cabinet is poor in sealing performance, and cannot prevent moist air, flammable and explosive gas, sand, dust, soil and the like from entering the power distribution cabinet through gaps in the operation process, so that electrical elements are corroded and oxidized, and dangers such as electrical appliance faults, explosion and the like are easily caused; some consider that the switch board of leakproofness has the relatively poor problem of heat dissipation again, can't effectively discharge to the heat that electrical equipment produced in the operation, causes the danger of catching fire or explosion easily, consequently, design a positive pressure type explosion-proof switch board to solve above-mentioned problem, just seem necessary very.
Disclosure of Invention
The utility model aims to solve the technical problem that a positive pressure type explosion-proof power distribution cabinet is provided, the device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires the problem of explosive, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
In order to realize the above design, the utility model adopts the following technical scheme: a positive pressure type explosion-proof power distribution cabinet comprises a hollow cabinet body, wherein electrical equipment is connected inside the cabinet body; the outer surface of the cabinet body is coated with a protective shell; the lower surface of the cabinet body is connected with a hollow equipment cabin, and the bottom surface of the inner wall of the equipment cabin is connected with a cooling system and an air exchange system; the air exchange system comprises an air pump connected with the bottom surface of the equipment cabin, the air inlet end of the air pump is connected with an air inlet pipe, and one end of the air inlet pipe extends out of the equipment cabin; the side surface of the equipment cabin is provided with heat dissipation holes, and the inner walls of the heat dissipation holes are provided with exhaust fans; the side surface of the cabinet body is connected with a controller, and the controller comprises a control panel and a microprocessor; the inner wall of the cabinet body is connected with a plurality of temperature sensors which are electrically connected with the controller.
The protective housing is a hollow housing, a ventilation pipe penetrates through the hollow interior of the protective housing, one end of the ventilation pipe is connected with the air outlet end of the air pump through the electromagnetic valve, and the other end of the ventilation pipe is connected with the exhaust device on the side surface of the cabinet body.
The cooling system comprises a cooling liquid tank, the top of the cooling liquid tank is connected with a liquid pump, and the liquid inlet end of the liquid pump is connected with the bottom of the cooling liquid tank through a pipeline; the side, in contact with the equipment cabin, of the protective shell is internally connected with a partition plate, and the liquid outlet end of the liquid pump is communicated with the inside of the protective shell on the left side of the partition plate through a pipeline.
The other side of the top of the cooling liquid tank is connected with a return pipe, and one end of the return pipe is communicated with the inside of the protective shell on the right side of the partition plate; a cooling liquid flow channel is formed in a gap between the inner wall of the protective shell and the air exchange tube; and a pipeline for supplementing liquid is arranged on the side surface of the cooling liquid tank.
And the surface of one side of the cooling liquid tank, which faces the heat dissipation holes, is connected with a refrigerating device, and the refrigerating device is communicated with the inside of the cooling liquid tank through a pipeline.
The bottom surface of the equipment cabin on one side of the air pump is connected with a pressure air bottle, and high-pressure nitrogen or carbon dioxide gas is filled in the pressure air bottle; the opening of the pressure gas bottle is connected with a scavenging tube through a pipeline and an electromagnetic valve.
The exhaust device comprises an exhaust pipe, and the exhaust pipe penetrates through the protective shell; one end of the exhaust pipe, which is positioned outside the protective shell, is connected with the cover plate; one end of the exhaust pipe, which is positioned outside the protective shell, is provided with a raised annular clamping block, the side surface of the cover plate is provided with a corresponding annular clamping groove which is clamped with the annular clamping block, and the cover plate can rotate on the end surface of the exhaust pipe.
The end face of the exhaust pipe, which is positioned at one end outside the protective shell, is connected with a baffle, and the surface of the baffle is provided with a through hole of a fan-shaped structure; the surface of the cover plate is provided with a through hole with a semicircular structure, and the baffle is in contact fit with the cover plate; the outer surface of the cover plate is sleeved with a toothed ring.
The outer surface of the protective shell below the cover plate is connected with a hollow structure opening and closing device, and the upper surface of the opening and closing device is provided with a through strip-shaped groove; the inner wall of the opening and closing device is connected with a sliding block through a sliding rail, the upper surface of the sliding block is connected with a rack, and the rack extends out of a strip-shaped groove to be meshed and matched with a toothed ring.
A cavity is formed between the left side of the sliding block and the inner wall of the opening and closing device, and the top of the cavity is connected with one end of the scavenging pipe through a pipeline; the right side surface of the sliding block is connected with the inner wall of the opening and closing device through a spring; the protective housing inner wall is connected with the air feed pipe, and air feed pipe one end and the inside scavenge pipe intercommunication of protective housing, the other end extends to the cabinet internally.
A positive pressure type explosion-proof power distribution cabinet comprises a hollow cabinet body, wherein electrical equipment is connected inside the cabinet body; the outer surface of the cabinet body is coated with a protective shell; the lower surface of the cabinet body is connected with a hollow equipment cabin, and the bottom surface of the inner wall of the equipment cabin is connected with a cooling system and an air exchange system; the air exchange system comprises an air pump connected with the bottom surface of the equipment cabin, the air inlet end of the air pump is connected with an air inlet pipe, and one end of the air inlet pipe extends out of the equipment cabin; the side surface of the equipment cabin is provided with heat dissipation holes, and the inner walls of the heat dissipation holes are provided with exhaust fans; the side surface of the cabinet body is connected with a controller, and the controller comprises a control panel and a microprocessor; the inner wall of the cabinet body is connected with a plurality of temperature sensors which are electrically connected with the controller. The device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires explosive problem, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
In a preferred scheme, the protective shell is a hollow shell, a ventilation pipe penetrates through the hollow interior of the protective shell, one end of the ventilation pipe is connected with the air outlet end of the air pump through an electromagnetic valve, and the other end of the ventilation pipe is connected with an exhaust device on the side surface of the cabinet body. The structure is simple, when the protective shell is used, the protective shell not only provides external protection and enhances the sealing performance for the power distribution cabinet body, but also can be used as a flow channel for ventilation and cooling liquid in the hollow shell, and the inner wall of the protective shell can also be used as a large-area heat dissipation plate for cooling the cabinet body in the shell; the outside of the protective shell can be additionally provided with a cushion pad and a heat-insulating layer to reduce the loss of cold energy.
In a preferred scheme, the cooling system comprises a cooling liquid tank, the top of the cooling liquid tank is connected with a liquid pump, and the liquid inlet end of the liquid pump is connected with the bottom of the cooling liquid tank through a pipeline; the side, in contact with the equipment cabin, of the protective shell is internally connected with a partition plate, and the liquid outlet end of the liquid pump is communicated with the inside of the protective shell on the left side of the partition plate through a pipeline.
In a preferred scheme, the other side of the top of the cooling liquid tank is connected with a return pipe, and one end of the return pipe is communicated with the inside of the protective shell on the right side of the partition plate; a cooling liquid flow channel is formed in a gap between the inner wall of the protective shell and the air exchange tube; and a pipeline for supplementing liquid is arranged on the side surface of the cooling liquid tank.
In the preferred scheme, the surface of one side, facing the heat dissipation holes, of the cooling liquid box is connected with a refrigerating device, and the refrigerating device is communicated with the inside of the cooling liquid box through a pipeline. The structure is simple, when the cooling device is used, the liquid in the cooling liquid tank is cooled by the refrigerating device, the cooling liquid enters the cavity in the protective shell from the left side of the partition plate through the liquid pump, and flows back to the cooling liquid tank from the return pipe on the right side of the protective shell after the cavity is filled with the cooling liquid, so that the cooling liquid is cooled again; the protective housing inner wall can play the effect of the heating panel of big face knot, cools down the cabinet body of inside, can the internal temperature of effective control cabinet, avoids the high temperature to lead to the explosion of catching a fire.
In a preferred scheme, the bottom surface of the equipment cabin on one side of the air pump is connected with a pressure air bottle, and high-pressure nitrogen or carbon dioxide gas is filled in the pressure air bottle; the opening of the pressure gas bottle is connected with a scavenging tube through a pipeline and an electromagnetic valve. The structure is simple, when in use, the air pump pumps external air into the air exchange tube, and the mouth of the air inlet tube can be additionally provided with a filter screen for filtering water and dust, so that the air entering the air exchange tube is kept clean; the gas in the ventilation pipe is surrounded by the cooling liquid for cooling, then is discharged into the cabinet body through the gas supply pipe, and the original high-temperature gas in the cabinet body is discharged from the exhaust device, so that the heat dissipation and cooling as well as the gas circulation are realized, and the dust and the like in the air are brought out; the electromagnetic valves are all connected with a controller, and the microprocessor selects an 80C51 singlechip; a plurality of temperature sensor distribute and carry out the multiple spot in the internal different positions of cabinet and detect, when detecting the temperature anomaly when too high, judge for the fire, the solenoid valve of air pump department is closed to the controller this moment, opens the solenoid valve of pressure gas cylinder department, and the scavenge pipe is gone into to the high-pressure gas pump in the pressure gas cylinder, can in time put out a fire to cabinet internal portion, avoids causing the explosion.
In a preferred scheme, the exhaust device comprises an exhaust pipe, and the exhaust pipe penetrates through the protective shell; one end of the exhaust pipe, which is positioned outside the protective shell, is connected with the cover plate; one end of the exhaust pipe, which is positioned outside the protective shell, is provided with a raised annular clamping block, the side surface of the cover plate is provided with a corresponding annular clamping groove which is clamped with the annular clamping block, and the cover plate can rotate on the end surface of the exhaust pipe.
In the preferred scheme, the end face of the exhaust pipe, which is positioned at one end outside the protective shell, is connected with a baffle, and the surface of the baffle is provided with a through hole with a fan-shaped structure; the surface of the cover plate is provided with a through hole with a semicircular structure, and the baffle is in contact fit with the cover plate; the outer surface of the cover plate is sleeved with a toothed ring. Simple structure, during the use, the apron cooperates with the baffle of blast pipe tip, and when the through-hole of apron rotated to coincide with the baffle through-hole, the blast pipe was opened this moment, otherwise then the blast pipe seals, keeps the internal airtight environment of cabinet.
In a preferred scheme, the outer surface of the protective shell below the cover plate is connected with a hollow structure opening and closing device, and the upper surface of the opening and closing device is provided with a through strip-shaped groove; the inner wall of the opening and closing device is connected with a sliding block through a sliding rail, the upper surface of the sliding block is connected with a rack, and the rack extends out of a strip-shaped groove to be meshed and matched with a toothed ring.
In the preferred scheme, a cavity is formed between the left side of the sliding block and the inner wall of the opening and closing device, and the top of the cavity is connected with one end of the scavenging pipe through a pipeline; the right side surface of the sliding block is connected with the inner wall of the opening and closing device through a spring; the protective housing inner wall is connected with the air feed pipe, and air feed pipe one end and the inside scavenge pipe intercommunication of protective housing, the other end extends to the cabinet internally. The structure is simple, when the air pump is used, the opening and closing device is controlled through air pressure, when the air pump runs to ventilate air in the cabinet body, one air in the ventilating pipe is introduced into the opening and closing device to push the sliding block to slide rightwards, and the spring is compressed; the rack on the upper surface of the sliding block is meshed with the toothed ring, and the rack moves to drive the toothed ring to rotate, so that the cover plate rotates to open the exhaust pipe for ventilation; when the air pump is closed, when no longer taking a breath to the internal, the slider loses atmospheric pressure thrust, resets under the spring action, and the rack drives the apron and rotates, makes the blast pipe closed to keep the internal sealed environment of cabinet, avoid entering such as dust.
A positive pressure type explosion-proof power distribution cabinet comprises a hollow cabinet body, wherein electrical equipment is connected inside the cabinet body; the outer surface of the cabinet body is coated with a protective shell; the lower surface of the cabinet body is connected with a hollow equipment cabin, and the bottom surface of the inner wall of the equipment cabin is connected with a cooling system and an air exchange system; the air exchange system comprises an air pump connected with the bottom surface of the equipment cabin, the air inlet end of the air pump is connected with an air inlet pipe, and one end of the air inlet pipe extends out of the equipment cabin; the side surface of the equipment cabin is provided with heat dissipation holes, and the inner walls of the heat dissipation holes are provided with exhaust fans; the side surface of the cabinet body is connected with a controller, and the controller comprises a control panel and a microprocessor; the inner wall of the cabinet body is connected with a plurality of temperature sensors which are electrically connected with the controller. The device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires explosive problem, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a schematic structural view of the middle air interchanger of the present invention.
Fig. 3 is a schematic front view of the section of the middle opening/closing device of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
The reference numbers in the figures are: the cabinet body 1, the controller 11, the temperature sensor 12, the protective shell 2, the partition plate 21, the air supply pipe 22, the equipment compartment 3, the heat dissipation hole 31, the exhaust fan 32, the cooling liquid tank 41, the liquid pump 42, the return pipe 43, the refrigeration device 44, the air pump 51, the air inlet pipe 52, the air exchange pipe 53, the pressure gas cylinder 54, the exhaust device 6, the exhaust pipe 61, the annular fixture block 611, the baffle 62, the cover plate 7, the toothed ring 71, the opening and closing device 8, the slider 81, the rack 82, the strip-shaped groove 83 and the spring 84.
Detailed Description
As shown in fig. 1 to 4, a positive pressure type explosion-proof power distribution cabinet comprises a hollow cabinet body 1, wherein electrical equipment is connected inside the cabinet body 1; the outer surface of the cabinet body 1 is coated with a protective shell 2; the lower surface of the cabinet body 1 is connected with a hollow equipment cabin 3, and the bottom surface of the inner wall of the equipment cabin 3 is connected with a cooling system and a ventilation system; the ventilation system comprises an air pump 51 connected with the bottom surface of the equipment chamber 3, the air inlet end of the air pump 51 is connected with an air inlet pipe 52, and one end of the air inlet pipe 52 extends out of the equipment chamber 3; a heat dissipation hole 31 is formed in the side surface of the equipment compartment 3, and an exhaust fan 32 is installed on the inner wall of the heat dissipation hole 31; a controller 11 is connected to the side surface of the cabinet body 1, and the controller 11 comprises a control panel and a microprocessor; the inner wall of the cabinet body 1 is connected with a plurality of temperature sensors 12, and the temperature sensors 12 are electrically connected with the controller 11. The device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires explosive problem, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
In a preferred scheme, the protective shell 2 is a hollow shell, a ventilation pipe 53 penetrates through the hollow interior of the protective shell 2, one end of the ventilation pipe 53 is connected with the air outlet end of the air pump 51 through an electromagnetic valve, and the other end of the ventilation pipe is connected with the exhaust device 6 on the side surface of the cabinet body 1. The structure is simple, when the cooling cabinet is used, the protective shell 2 not only provides external protection for the power distribution cabinet body and enhances the sealing performance, but also can be used as a flow channel for ventilation and cooling liquid in the hollow shell, and the inner wall of the protective shell 2 can also be used as a large-area cooling plate to cool the cabinet body 1 in the hollow shell; a buffer pad and a heat preservation layer can be additionally arranged outside the protective shell 2 to reduce the loss of cold energy.
In a preferred scheme, the cooling system comprises a cooling liquid tank 41, the top of the cooling liquid tank 41 is connected with a liquid pump 42, and the liquid inlet end of the liquid pump 42 is connected with the bottom of the cooling liquid tank 41 through a pipeline; the partition plate 21 is connected to the inner side of the protective shell 2 contacting with the equipment cabin 3, and the liquid outlet end of the liquid pump 42 is communicated with the inner part of the protective shell 2 on the left side of the partition plate 21 through a pipeline.
In a preferable scheme, the other side of the top of the cooling liquid tank 41 is connected with a return pipe 43, and one end of the return pipe 43 is communicated with the inside of the protective shell 2 on the right side of the partition plate 21; a cooling liquid flow channel is formed by a gap between the inner wall of the protective shell 2 and the air exchange tube 53; a pipeline for replenishing liquid is opened on the side surface of the cooling liquid tank 41.
In a preferred embodiment, a cooling device 44 is connected to a surface of the cooling liquid tank 41 facing the heat dissipation hole 31, and the cooling device 44 is communicated with the inside of the cooling liquid tank 41 through a pipeline. The structure is simple, when the cooling device is used, the refrigerating device 44 cools the liquid in the cooling liquid tank 41, the cooling liquid enters the cavity in the protective shell 2 from the left side of the partition plate 21 through the liquid pump 42, and flows back to the cooling liquid tank 41 from the return pipe 43 on the right side of the protective shell 2 after the cavity is filled with the cooling liquid, so that the temperature is reduced again; the inner wall of the protective shell 2 can play the role of a heating panel with a large junction, the cabinet body 1 inside is cooled, the temperature in the cabinet body 1 can be effectively controlled, and the fire explosion caused by overhigh temperature is avoided.
In a preferred scheme, the bottom surface of the equipment chamber 3 on one side of the air pump 51 is connected with a pressure air bottle 54, and high-pressure nitrogen or carbon dioxide gas is filled in the pressure air bottle 54; the opening of the pressure gas bottle 54 is connected with the scavenging pipe 53 through a pipeline and an electromagnetic valve. The structure is simple, when in use, the air pump 51 pumps external air into the air exchanging pipe 53, and the pipe orifice of the air inlet pipe 52 can be additionally provided with a filter screen for filtering water and dust, so that the air entering the air exchanging pipe 53 is kept clean; the gas in the ventilation pipe 53 is surrounded by the cooling liquid for cooling, and then is discharged into the cabinet body 1 through the air feed pipe 22, so that the original high-temperature gas in the cabinet body 1 is discharged from the exhaust device 6, thereby realizing heat dissipation and cooling and gas circulation, and bringing out dust and the like in the air; the electromagnetic valves are all connected with the controller 11, and the microprocessor selects an 80C51 singlechip; a plurality of temperature sensor 12 distribute and carry out the multiple spot in the cabinet body 1 different positions and detect, when detecting the temperature anomaly when too high, judge for the fire, controller 11 closes the solenoid valve of air pump 51 department this moment, opens the solenoid valve of pressure gas cylinder 54 department, and the high-pressure gas pump in the pressure gas cylinder 54 goes into scavenge pipe 53, can in time put out a fire to cabinet body 1 inside, avoids causing the explosion.
In a preferred scheme, the exhaust device 6 comprises an exhaust pipe 61, and the exhaust pipe 61 penetrates through the protective shell 2; one end of the exhaust pipe 61 outside the protective shell 2 is connected with the cover plate 7; one end of the exhaust pipe 61, which is located outside the protective shell 2, is provided with a raised annular clamping block 611, the side surface of the cover plate 7 is provided with a corresponding annular clamping groove which is clamped with the annular clamping block 611, and the cover plate 7 can rotate on the end surface of the exhaust pipe 61.
In a preferred scheme, a baffle plate 62 is connected to the end surface of the exhaust pipe 61 at one end outside the protective shell 2, and a through hole with a sector structure is formed in the surface of the baffle plate 62; the surface of the cover plate 7 is provided with a through hole with a semicircular structure, and the baffle plate 62 is in contact fit with the cover plate 7; the outer surface of the cover plate 7 is sleeved with a toothed ring 71. Simple structure, during the use, apron 7 cooperates with the baffle 62 of blast pipe 61 tip, and when the through-hole of apron 7 rotated to coincide with baffle 62 through-hole, blast pipe 61 was opened this moment, otherwise then blast pipe 61 seals, keeps the airtight environment in the cabinet body 1.
In the preferred scheme, the outer surface of the protective shell 2 below the cover plate 7 is connected with a hollow structure opening and closing device 8, and the upper surface of the opening and closing device 8 is provided with a through strip-shaped groove 83; the inner wall of the opening and closing device 8 is connected with a sliding block 81 through a sliding rail, the upper surface of the sliding block 81 is connected with a rack 82, and the rack 82 extends out of a strip-shaped groove 83 to be meshed and matched with the toothed ring 71.
In the preferred scheme, a cavity is formed between the left side of the sliding block 81 and the inner wall of the opening and closing device 8, and the top of the cavity is connected with one end of the scavenging tube 53 through a pipeline; the right side surface of the sliding block 81 is connected with the inner wall of the opening and closing device 8 through a spring 84; the inner wall of the protective shell 2 is connected with an air supply pipe 22, one end of the air supply pipe 22 is communicated with a ventilation pipe 53 in the protective shell 2, and the other end of the air supply pipe extends into the cabinet body 1. The structure is simple, when the air-exchanging device is used, the opening and closing device 8 is controlled through air pressure, when the air pump 51 runs to exchange air in the cabinet body 1, one air in the air-exchanging pipe 53 is introduced into the opening and closing device 8 to push the sliding block 81 to slide rightwards, and the spring 84 is compressed; the rack 82 on the upper surface of the sliding block 81 is meshed with the toothed ring 71, and the rack 82 moves to drive the toothed ring 71 to rotate, so that the cover plate 7 rotates to open the exhaust pipe 61 for ventilation; when the air pump 51 is closed and the cabinet body 1 is not ventilated, the sliding block 81 loses air pressure thrust and is reset under the action of the spring 84, and the rack 82 drives the cover plate 7 to rotate, so that the exhaust pipe 61 is closed, the sealed environment in the cabinet body 1 is kept, and dust and the like are prevented from entering.
When the positive pressure type explosion-proof power distribution cabinet is installed and used, the cabinet body 1 is internally connected with electrical equipment; the outer surface of the cabinet body 1 is coated with a protective shell 2; the lower surface of the cabinet body 1 is connected with a hollow equipment cabin 3, and the bottom surface of the inner wall of the equipment cabin 3 is connected with a cooling system and a ventilation system; the ventilation system comprises an air pump 51 connected with the bottom surface of the equipment chamber 3, the air inlet end of the air pump 51 is connected with an air inlet pipe 52, and one end of the air inlet pipe 52 extends out of the equipment chamber 3; a heat dissipation hole 31 is formed in the side surface of the equipment compartment 3, and an exhaust fan 32 is installed on the inner wall of the heat dissipation hole 31; a controller 11 is connected to the side surface of the cabinet body 1, and the controller 11 comprises a control panel and a microprocessor; the inner wall of the cabinet body 1 is connected with a plurality of temperature sensors 12, and the temperature sensors 12 are electrically connected with the controller 11. The device has solved current switch board leakproofness poor, receives the invasion of humid air and dust etc. easily to and the thermal diffusivity is poor, easily fires explosive problem, it is good to have the leakproofness, can effectively avoid dust and moisture to get into, can effectively dispel the heat and prevent the characteristics of explosion on fire.
When the cooling cabinet is used, the protective shell 2 is a hollow shell, the ventilation pipe 53 penetrates through the hollow interior of the protective shell 2, one end of the ventilation pipe 53 is connected with the air outlet end of the air pump 51 through the electromagnetic valve, the other end of the ventilation pipe is connected with the exhaust device 6 on the side surface of the cabinet body 1, the protective shell 2 not only provides external protection for the power distribution cabinet body and enhances the sealing performance, but also can be used as a flow channel of ventilation and cooling liquid in the hollow shell, and the inner wall of the protective shell 2 can also be used as a large-area cooling plate to cool the; a buffer pad and a heat preservation layer can be additionally arranged outside the protective shell 2 to reduce the loss of cold energy.
When in use, the cooling system comprises a cooling liquid tank 41, the top of the cooling liquid tank 41 is connected with a liquid pump 42, and the liquid inlet end of the liquid pump 42 is connected with the bottom of the cooling liquid tank 41 through a pipeline; the partition plate 21 is connected to the inner side of the protective shell 2 contacting with the equipment cabin 3, and the liquid outlet end of the liquid pump 42 is communicated with the inner part of the protective shell 2 on the left side of the partition plate 21 through a pipeline.
When in use, the other side of the top of the cooling liquid tank 41 is connected with a return pipe 43, and one end of the return pipe 43 is communicated with the inside of the protective shell 2 on the right side of the clapboard 21; a cooling liquid flow channel is formed by a gap between the inner wall of the protective shell 2 and the air exchange tube 53; a pipeline for replenishing liquid is opened on the side surface of the cooling liquid tank 41.
When the cooling device is used, the surface of one side, facing the heat dissipation holes 31, of the cooling liquid tank 41 is connected with the refrigerating device 44, the refrigerating device 44 is communicated with the interior of the cooling liquid tank 41 through a pipeline, the refrigerating device 44 cools liquid in the cooling liquid tank 41, the cooling liquid enters the cavity in the protective shell 2 from the left side of the partition plate 21 through the liquid pump 42, and flows back to the cooling liquid tank 41 from the return pipe 43 on the right side of the protective shell 2 after the cavity is filled with the cooling liquid, so that the temperature is; the inner wall of the protective shell 2 can play the role of a heating panel with a large junction, the cabinet body 1 inside is cooled, the temperature in the cabinet body 1 can be effectively controlled, and the fire explosion caused by overhigh temperature is avoided.
When in use, the bottom surface of the equipment chamber 3 at one side of the air pump 51 is connected with a pressure gas cylinder 54, and high-pressure nitrogen or carbon dioxide gas is filled in the pressure gas cylinder 54; the mouth of the pressure gas bottle 54 is connected with the air exchange tube 53 through a pipeline and an electromagnetic valve, the air pump 51 pumps external gas into the air exchange tube 53, and the mouth of the air inlet tube 52 can be additionally provided with a filter screen for filtering water and dust, so that the air entering the air exchange tube 53 is kept clean; the gas in the ventilation pipe 53 is surrounded by the cooling liquid for cooling, and then is discharged into the cabinet body 1 through the air feed pipe 22, so that the original high-temperature gas in the cabinet body 1 is discharged from the exhaust device 6, thereby realizing heat dissipation and cooling and gas circulation, and bringing out dust and the like in the air; the electromagnetic valves are all connected with the controller 11, and the microprocessor selects an 80C51 singlechip; a plurality of temperature sensor 12 distribute and carry out the multiple spot in the cabinet body 1 different positions and detect, when detecting the temperature anomaly when too high, judge for the fire, controller 11 closes the solenoid valve of air pump 51 department this moment, opens the solenoid valve of pressure gas cylinder 54 department, and the high-pressure gas pump in the pressure gas cylinder 54 goes into scavenge pipe 53, can in time put out a fire to cabinet body 1 inside, avoids causing the explosion.
In use, the exhaust device 6 comprises an exhaust pipe 61, and the exhaust pipe 61 penetrates through the protective shell 2; one end of the exhaust pipe 61 outside the protective shell 2 is connected with the cover plate 7; one end of the exhaust pipe 61, which is located outside the protective shell 2, is provided with a raised annular clamping block 611, the side surface of the cover plate 7 is provided with a corresponding annular clamping groove which is clamped with the annular clamping block 611, and the cover plate 7 can rotate on the end surface of the exhaust pipe 61.
When the protective shell is used, the end face of the exhaust pipe 61, which is positioned at the outer end of the protective shell 2, is connected with a baffle plate 62, and the surface of the baffle plate 62 is provided with a through hole with a sector structure; the surface of the cover plate 7 is provided with a through hole with a semicircular structure, and the baffle plate 62 is in contact fit with the cover plate 7; the outer surface of the cover plate 7 is sleeved with a toothed ring 71, the cover plate 7 is matched with the baffle plate 62 at the end part of the exhaust pipe 61, when the through hole of the cover plate 7 rotates to coincide with the through hole of the baffle plate 62, the exhaust pipe 61 is opened at the moment, otherwise, the exhaust pipe 61 is closed, and the closed environment in the cabinet body 1 is kept.
When the protective shell is used, the outer surface of the protective shell 2 below the cover plate 7 is connected with a hollow structure opening and closing device 8, and the upper surface of the opening and closing device 8 is provided with a through strip-shaped groove 83; the inner wall of the opening and closing device 8 is connected with a sliding block 81 through a sliding rail, the upper surface of the sliding block 81 is connected with a rack 82, and the rack 82 extends out of a strip-shaped groove 83 to be meshed and matched with the toothed ring 71.
When in use, a cavity is formed between the left side of the sliding block 81 and the inner wall of the opening and closing device 8, and the top of the cavity is connected with one end of the scavenging tube 53 through a pipeline; the right side surface of the sliding block 81 is connected with the inner wall of the opening and closing device 8 through a spring 84; the inner wall of the protective shell 2 is connected with an air supply pipe 22, one end of the air supply pipe 22 is communicated with a ventilation pipe 53 in the protective shell 2, the other end of the air supply pipe 22 extends into the cabinet body 1, the opening and closing device 8 is controlled through air pressure, when the air pump 51 operates to ventilate air in the cabinet body 1, one air in the ventilation pipe 53 is introduced into the opening and closing device 8 to push the sliding block 81 to slide rightwards, and the spring 84 is compressed; the rack 82 on the upper surface of the sliding block 81 is meshed with the toothed ring 71, and the rack 82 moves to drive the toothed ring 71 to rotate, so that the cover plate 7 rotates to open the exhaust pipe 61 for ventilation; when the air pump 51 is closed and the cabinet body 1 is not ventilated, the sliding block 81 loses air pressure thrust and is reset under the action of the spring 84, and the rack 82 drives the cover plate 7 to rotate, so that the exhaust pipe 61 is closed, the sealed environment in the cabinet body 1 is kept, and dust and the like are prevented from entering.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. A positive pressure type explosion-proof power distribution cabinet comprises a hollow cabinet body (1), wherein electrical equipment is connected inside the cabinet body (1); the method is characterized in that: the outer surface of the cabinet body (1) is coated with a protective shell (2); the lower surface of the cabinet body (1) is connected with a hollow equipment cabin (3), and the bottom surface of the inner wall of the equipment cabin (3) is connected with a cooling system and a ventilation system; the ventilation system comprises an air pump (51) connected with the bottom surface of the equipment cabin (3), the air inlet end of the air pump (51) is connected with an air inlet pipe (52), and one end of the air inlet pipe (52) extends out of the equipment cabin (3); heat dissipation holes (31) are formed in the side surface of the equipment cabin (3), and exhaust fans (32) are installed on the inner walls of the heat dissipation holes (31); a controller (11) is connected to the side surface of the cabinet body (1), and the controller (11) comprises a control panel and a microprocessor; the inner wall of the cabinet body (1) is connected with a plurality of temperature sensors (12), and the temperature sensors (12) are electrically connected with the controller (11).
2. The explosion-proof switch board of positive pressure type of claim 1, characterized in that: the air pump is characterized in that the protective shell (2) is a hollow shell, a ventilation pipe (53) penetrates through the hollow interior of the protective shell (2), one end of the ventilation pipe (53) is connected with an air outlet end of the air pump (51) through an electromagnetic valve, and the other end of the ventilation pipe is connected with an exhaust device (6) on the side surface of the cabinet body (1).
3. The explosion-proof switch board of positive pressure type of claim 1, characterized in that: the cooling system comprises a cooling liquid tank (41), the top of the cooling liquid tank (41) is connected with a liquid pump (42), and the liquid inlet end of the liquid pump (42) is connected with the bottom of the cooling liquid tank (41) through a pipeline; a partition plate (21) is connected to the inner portion of one side, in contact with the equipment cabin (3), of the protective shell (2), and the liquid outlet end of the liquid pump (42) is communicated with the inner portion of the protective shell (2) on the left side of the partition plate (21) through a pipeline.
4. The explosion-proof switch board of positive pressure type of claim 3, characterized in that: the other side of the top of the cooling liquid tank (41) is connected with a return pipe (43), and one end of the return pipe (43) is communicated with the inside of the protective shell (2) on the right side of the partition plate (21); a cooling liquid flow channel is formed by a gap between the inner wall of the protective shell (2) and the air exchange pipe (53); a pipeline for supplementing liquid is arranged on the side surface of the cooling liquid tank (41).
5. The explosion-proof switch board of positive pressure type of claim 3, characterized in that: the surface of one side, facing the heat dissipation hole (31), of the cooling liquid tank (41) is connected with a refrigerating device (44), and the refrigerating device (44) is communicated with the interior of the cooling liquid tank (41) through a pipeline.
6. The explosion-proof switch board of positive pressure type of claim 1, characterized in that: the bottom surface of the equipment cabin (3) on one side of the air pump (51) is connected with a pressure air bottle (54), and high-pressure nitrogen or carbon dioxide gas is filled in the pressure air bottle (54); the opening of the pressure gas bottle (54) is connected with a scavenging pipe (53) through a pipeline and an electromagnetic valve.
7. The explosion-proof switch board of positive pressure type of claim 2, characterized in that: the exhaust device (6) comprises an exhaust pipe (61), and the exhaust pipe (61) penetrates through the protective shell (2); one end of the exhaust pipe (61) positioned outside the protective shell (2) is connected with the cover plate (7); one end of the exhaust pipe (61) located outside the protective shell (2) is provided with a raised annular clamping block (611), the side surface of the cover plate (7) is provided with a corresponding annular clamping groove which is clamped with the annular clamping block (611), and the cover plate (7) can rotate on the end surface of the exhaust pipe (61).
8. The explosion-proof switch board of positive pressure type according to claim 7, characterized in that: the end face of the exhaust pipe (61) at one end outside the protective shell (2) is connected with a baffle (62), and the surface of the baffle (62) is provided with a through hole of a fan-shaped structure; the surface of the cover plate (7) is provided with a through hole with a semicircular structure, and the baffle plate (62) is in contact fit with the cover plate (7); the outer surface of the cover plate (7) is sleeved with a toothed ring (71).
9. The explosion-proof switch board of positive pressure type according to claim 7, characterized in that: the outer surface of the protective shell (2) below the cover plate (7) is connected with a hollow structure opening and closing device (8), and the upper surface of the opening and closing device (8) is provided with a through strip-shaped groove (83); the inner wall of the opening and closing device (8) is connected with a sliding block (81) through a sliding rail, the upper surface of the sliding block (81) is connected with a rack (82), and the rack (82) extends out of a strip-shaped groove (83) to be meshed and matched with the gear ring (71).
10. The explosion-proof switch board of positive pressure type of claim 9, characterized in that: a cavity is formed between the left side of the sliding block (81) and the inner wall of the opening and closing device (8), and the top of the cavity is connected with one end of the scavenging pipe (53) through a pipeline; the right side surface of the sliding block (81) is connected with the inner wall of the opening and closing device (8) through a spring (84); an air supply pipe (22) is connected to the inner wall of the protective shell (2), one end of the air supply pipe (22) is communicated with a ventilation pipe (53) in the protective shell (2), and the other end of the air supply pipe extends into the cabinet body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769318.3U CN212784291U (en) | 2020-08-23 | 2020-08-23 | Positive pressure type explosion-proof power distribution cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021769318.3U CN212784291U (en) | 2020-08-23 | 2020-08-23 | Positive pressure type explosion-proof power distribution cabinet |
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| CN212784291U true CN212784291U (en) | 2021-03-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204440A (en) * | 2021-12-08 | 2022-03-18 | 二工防爆科技股份有限公司 | Explosion-proof power distribution cabinet |
| CN115887977A (en) * | 2022-12-07 | 2023-04-04 | 宁波东鸿信息技术有限公司 | Equipment for fire prevention and alarm of machine room |
| CN116826573A (en) * | 2023-07-11 | 2023-09-29 | 安徽宝莱电气智能科技有限公司 | Intelligent explosion-proof high-low voltage power distribution cabinet |
-
2020
- 2020-08-23 CN CN202021769318.3U patent/CN212784291U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204440A (en) * | 2021-12-08 | 2022-03-18 | 二工防爆科技股份有限公司 | Explosion-proof power distribution cabinet |
| CN115887977A (en) * | 2022-12-07 | 2023-04-04 | 宁波东鸿信息技术有限公司 | Equipment for fire prevention and alarm of machine room |
| CN115887977B (en) * | 2022-12-07 | 2024-01-16 | 宁波东鸿信息技术有限公司 | Equipment for fire prevention and alarm of machine room |
| CN116826573A (en) * | 2023-07-11 | 2023-09-29 | 安徽宝莱电气智能科技有限公司 | Intelligent explosion-proof high-low voltage power distribution cabinet |
| CN116826573B (en) * | 2023-07-11 | 2024-05-24 | 安徽宝莱电气智能科技有限公司 | Intelligent explosion-proof high-low voltage power distribution cabinet |
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