CN113381322B - Explosion-proof distribution box - Google Patents
Explosion-proof distribution box Download PDFInfo
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- CN113381322B CN113381322B CN202110585840.9A CN202110585840A CN113381322B CN 113381322 B CN113381322 B CN 113381322B CN 202110585840 A CN202110585840 A CN 202110585840A CN 113381322 B CN113381322 B CN 113381322B
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- fixedly connected
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- sliding
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
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Abstract
The invention belongs to the technical field of distribution boxes, and particularly relates to an explosion-proof distribution box which comprises a box body and supporting legs; the support legs are fixedly connected to the bottom of the box body, and the side surface of the box body is hinged with a box door; the box body is fixedly connected with a mounting plate through a group of insulating columns, and the mounting plate is fixedly connected with an electric appliance element; the periphery of the electrical element is fixedly connected with a heat-conducting metal box, the metal box is wrapped on the periphery of the electrical element in a U shape, and sodium bicarbonate is filled in a cavity formed in one side of the metal box; a group of vertically arranged sliding chutes are formed in the side wall of the cavity close to the electrical component, a group of first holes are uniformly distributed at the bottom of each sliding chute, and the bottoms of the first holes are communicated with the cavity through second holes; according to the invention, the sodium bicarbonate stored in the metal box is heated to generate carbon dioxide and water, and simultaneously absorbs the heat of the metal box, so that the temperature of an electrical appliance element is reduced, and the generated carbon dioxide is sprayed to the first hole and the sliding groove after passing through the second hole, so that the generation of electric sparks is reduced.
Description
Technical Field
The invention belongs to the technical field of distribution boxes, and particularly relates to an explosion-proof distribution box.
Background
The lighting distribution box is a basic distribution device which reasonably combines and assembles a current action protector, an air circuit breaker and the like in the lighting distribution box, thereby realizing the centralized control of a household power supply and the protection functions of grounding, overload, short circuit and the like. And the inside of the transformer is also provided with a bus bar for protecting a grounding wire and a neutral wire respectively so as to facilitate the wiring of various low-voltage distribution systems. The lighting distribution box is widely used in various places such as buildings, squares, stations, industrial and mining enterprises and the like as terminal electrical equipment of a distribution system.
Some technical schemes about the block terminal have also appeared among the prior art, as an application number 2020102391556 Chinese patent discloses an explosion-proof block terminal, including box, chamber door, electrical components's total control switch sets up on the chamber door, total control switch is the knob formula, is equipped with the bump on total control switch's the center pin, is equipped with on the chamber door to press the bolt, can press and be equipped with reset spring on the bolt, and the bottom half is equipped with the jack. According to the explosion-proof distribution box, the mechanical structure is improved, the explosion-proof distribution box can be opened only under the condition of power failure, and the safe operation is ensured. However, in the prior art, when the distribution box works in a mine or a friend flammable and explosive environment, strict explosion-proof requirements are imposed on the distribution box, but the underground environment is harsh, so that poor heat dissipation of the distribution box is easily caused, and heat dissipation of internal electrical components is poor during long-time high-load work, so that damage or electric sparks are caused, and the safety of the distribution box and workers is affected.
To this end, the present invention provides an explosion-proof electrical box.
Disclosure of Invention
The invention provides an explosion-proof distribution box, which aims to make up for the defects of the prior art and solve the problems that in the prior art, when the distribution box works in a mine or a friend flammable and explosive environment, the distribution box has strict explosion-proof requirements, but the underground environment is severe, so that the heat dissipation of the distribution box is poor, the heat dissipation of internal electrical components is poor during long-time high-load work, further damage or electric sparks are caused, and the safety of the distribution box and workers is influenced.
The technical scheme adopted by the invention for solving the technical problem is as follows: the explosion-proof distribution box comprises a box body and support legs; the supporting legs are fixedly connected to the bottom of the box body, and the side face of the box body is hinged with a box door; the box body is fixedly connected with a mounting plate through a group of insulating columns, and the mounting plate is fixedly connected with an electric appliance element; the periphery of the electrical element is fixedly connected with a heat-conducting metal box, the metal box is wrapped on the periphery of the electrical element in a U shape, and sodium bicarbonate is filled in a cavity formed in one side of the metal box; a group of vertically arranged sliding chutes are formed in the side wall of the cavity close to the electrical component, a group of first holes are uniformly distributed at the bottoms of the sliding chutes, and the bottoms of the first holes are communicated with the cavity through second holes; when the power distribution box works in a mine or a friend flammable and explosive environment in the prior art, the power distribution box has strict explosion-proof requirements, but the underground environment is harsh, so that poor heat dissipation of the power distribution box is easily caused, and the heat dissipation of internal electrical components is poor during long-time high-load work, so that damage or electric sparks are caused, and the safety of the power distribution box and workers is influenced.
Preferably, one end of the first hole close to the second hole is inclined downwards; the upper part of one end of the first hole, which is close to the second hole, is hinged with an arc-shaped elastic filter screen, and the end part of the filter screen props against the second hole and is in sliding connection with the second hole; through the hole No. one of downward sloping for when the air current that produces carries the dust that sodium bicarbonate decomposition produced in the cavity, the dust through the filtration and the speed reduction of filter screen, and then make the powder subside to No. two hole bottoms, reduce the influence of the dust that a hole blew off to circuit in the block terminal, avoid the dust accumulation on electrical components on the back short circuit that moisture absorption arouses, further guarantee the power consumption safety of block terminal.
Preferably, a group of gas cylinders are fixedly connected in the metal box, and compressed carbon dioxide is filled in the gas cylinders; the top of the gas cylinder is fixedly connected with a pressure reducing cavity, the top of the gas cylinder in the pressure reducing cavity is hinged with a cover plate, and the cover plate is hermetically connected with the gas cylinder; the top of the metal box is provided with a spray hole at a position corresponding to the cover plate; a third hole is horizontally formed in the top of the second hole, and one end, close to the electrical component, of the third hole penetrates through the metal box; a sliding column is connected in the third hole in a sliding and sealing mode, and a tension spring is fixedly connected between the sliding column and the bottom of the third hole; the bottom of the third hole is communicated with the cavity, one end of the sliding column, which is far away from the tension spring, is fixedly connected with a mandril, and the mandril penetrates through the pressure reduction cavity and is in sliding connection with the pressure reduction cavity; the top of one side of the cover plate, which is far away from the hinge joint with the gas cylinder, is connected with a pressing plate in a sliding manner, and the pressing plate is fixedly connected with the ejector rod; when the electrical components high temperature is on fire, extrude the traveller through the carbon dioxide volume expansion back that sodium bicarbonate decomposes and produces in the cavity, and then make the traveller slide the back cavity and communicate through No. three holes and No. two holes, make the normal jet-propelled of a hole, cool down and isolated oxygen electrical components, the traveller promotes ejector pin and clamp plate and laps one side mutually and slides, and then make the compressed carbon dioxide blowout in the gas cylinder after the apron is opened, be full of in the box rapidly, and then put out a fire to the burning things which may cause a fire disaster in the box, heat absorption during the carbon dioxide inflation in the gas cylinder simultaneously, and then reduce the temperature in the box fast, increase the efficiency of putting out a fire.
Preferably, a blind window is arranged in a ventilation hole formed in the side surface of the box body; a fan is fixedly connected with the position in the box body corresponding to the louver through a bracket; the louver comprises a rotating pin and blades, and the middle parts of the blades are rotatably connected with the inner wall of the vent hole through the rotating pin; one side of the shutter is provided with a connecting rod which is vertically arranged, and the connecting rod is hinged with the end part of the blade; the rotating pin is rotatably connected with a shaft sleeve, the periphery of the shaft sleeve is fixedly connected with a first rod and a second rod, and the first rod and the second rod are perpendicular to each other; a limiting pin is fixedly connected in a ventilation hole on one side of the rotating pin, which is close to the fan, the height of the limiting pin is lower than that of the rotating pin at the corresponding position, and the first rod is in contact with the limiting pin; the shaft sleeve of the second rod, which is far away from the first rod, is fixedly connected with a wind plate, and the end part of the second rod is fixedly connected with a small ball through a pull rope; when the gas cylinder is opened, the air pressure in the box body rises instantly, and then the louver is enabled to generate air flow which is quickly sprayed out of the box body, at the moment, the air flow impacts the wind plate to drive the first rod and the second rod to rotate clockwise, and then the second rod rotates the highest point, and then the small ball drives the second rod to continue to rotate, so that the first rod drives the connecting rod to move upwards along with the rotation process of the shaft sleeve, and then the blades are in lap joint with each other after rotating rapidly, the louver is sealed, the external air is further reduced to enter the box body, and the killing efficiency of fire in the box body is increased.
Preferably, a sharp thorn is fixedly connected to one end of each blade close to the fan, an elastic bag is fixedly connected to the position, corresponding to the sharp thorn, of the upper-stage fan blade through an angle iron, and a foaming sealant is filled in the elastic bag; puncture the elasticity bag that links firmly on the last one-level blade through the spine, and then make the elasticity bag release foaming sealant after breaking for foaming sealant fills the clearance between the full adjacent blade, and then increases the leakproofness in ventilation hole, further increases the isolated performance between box inner space and the outside atmosphere, increases fire extinguishing efficiency.
Preferably, the end part of the blade corresponding to the spine is connected with an arc-shaped hook, the hook is hinged with the blade, and a torsion spring is arranged at the hinged part of the hook and the blade; the end part of the blade, far away from the spine, of the hook is provided with a limiting seat, one end, close to the hook, in the blade is provided with a sliding hole, and a magnetic column is connected in the sliding hole in a sliding manner; when the normal during operation of shutter, the magnetic column attracts the crotch to make the crotch reduce the air resistance between the adjacent blade after rotating, when blade clockwise rotation and closed, the magnetic column glides in the slide opening, and then makes the crotch open under the effect of torsional spring, and later the crotch blocks the angle bar, further increases the firm in connection nature between the adjacent blade, further increases the leakproofness in ventilation hole.
Preferably, a clamping hole is formed in one side, away from the blade, of the angle iron, a blind hole is formed in the position, corresponding to the clamping hole, of the hook, a clamping column is connected in the blind hole in a sliding mode, and a spring is fixedly connected between the clamping column and the bottom of the blind hole; after the angle bar is blocked into through the crotch card, the magnetism post in the slide opening slides to the slide opening bottom, and later the magnetism post moves to and blocks corresponding position, and the magnetism post attracts to block and inserts in the card hole after making the card post stretch out the blind hole, and then further increases the firm in connection between the adjacent blade.
Preferably, the inner side of the hook is provided with a diversion trench, and the bottom of the diversion trench is wavy; the landslide elastic bag is hooked on the angle iron through the hook, the flowing efficiency of the foaming sealant is further increased, the foaming sealant flows into a gap between the hook and the angle iron through the diversion trench, the wavy shape of the bottom is matched, the adhesion firmness between the hook and the angle iron is further increased, and the sealing performance of the vent hole is increased.
The invention has the following beneficial effects:
1. according to the explosion-proof distribution box, carbon dioxide and water are generated by heating sodium bicarbonate stored in the metal box, and meanwhile, heat of the metal box is absorbed, so that the temperature of an electrical element is reduced, carbon dioxide generated in the cavity is sprayed to the first hole and the sliding groove through the second hole, so that the corresponding position of the electrical element is isolated from oxygen in the air, the generation of electric sparks is reduced, and the electricity utilization safety of the distribution box is further ensured.
2. According to the explosion-proof distribution box, the hook hooks the angle iron and meanwhile the elastic bag slides, so that the flowing efficiency of the foaming sealant is further improved, the foaming sealant flows into a gap between the hook and the angle iron through the guide groove, the adhesion firmness between the hook and the angle iron is further improved by matching with the wavy shape of the bottom, and the sealing performance of the vent hole is improved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 2 at C;
FIG. 6 is a cross-sectional view of a blade and hook of the present invention;
in the figure: the box body 1, the support leg 11, the box door 12, the mounting plate 13, the electrical component 14, the metal box 15, the cavity 16, the sliding chute 17, the first hole 18, the second hole 19, the filter screen 2, the gas cylinder 21, the pressure reduction cavity 22, the cover plate 23, the spray hole 24, the third hole 25, the sliding column 26, the ejector rod 27, the pressing plate 28, the ventilation hole 3, the shutter 31, the fan 32, the rotating pin 33, the blade 34, the connecting rod 35, the shaft sleeve 36, the first rod 37, the second rod 38, the limiting pin 39, the wind plate 4, the small ball 41, the prick 42, the angle iron 43, the elastic bag 44, the hook 45, the sliding hole 46, the magnetic column 47, the clamping hole 48, the blind hole 49, the clamping column 5 and the diversion trench 51.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the explosion-proof distribution box of the present invention comprises a box body 1 and support legs 11; the support legs 11 are fixedly connected to the bottom of the box body 1, and the side surface of the box body 1 is hinged with a box door 12; a mounting plate 13 is fixedly connected with the inside of the box body 1 through a group of insulating columns, and an electric appliance element 14 is fixedly connected with the mounting plate 13; the periphery of the electrical element 14 is fixedly connected with a heat-conducting metal box 15, the metal box 15 wraps the periphery of the electrical element 14 in a U shape, and sodium bicarbonate is filled in a cavity 16 formed in one side of the metal box 15; a group of vertically arranged sliding grooves 17 are formed in the side wall of the cavity 16 close to the electrical component 14, a group of first holes 18 are uniformly distributed at the bottom of the sliding grooves 17, and the bottoms of the first holes 18 are communicated with the cavity 16 through second holes 19; when the distribution box works in a mine or a friend flammable and explosive environment in the prior art, the distribution box has strict explosion-proof requirements, but the underground environment is harsh, so that poor heat dissipation of the distribution box is easily caused, and the heat dissipation of an internal electrical element 14 is poor during long-time high-load work, so that damage or electric sparks are caused, and the safety of the distribution box and workers is influenced.
As an embodiment of the present invention, one end of the first hole 18 near the second hole 19 is inclined downwards; the upper part of one end of the first hole 18 close to the second hole 19 is hinged with an arc-shaped elastic filter screen 2, and the end part of the filter screen 2 props against the second hole 19 and is in sliding connection with the second hole 19; through the hole 18 of downward sloping for when the air current that produces in the cavity 16 carries the dust that sodium bicarbonate decomposed the production, the dust through filter screen 2 filter and slow down, and then make the powder subside to No. two hole 19 bottoms, reduce the influence of the dust that hole 18 blew off to the circuit in the block terminal, avoid the dust accumulation on electrical components 14 on the back short circuit that the moisture absorption arouses, further guarantee the power consumption safety of block terminal.
As an embodiment of the present invention, a group of gas cylinders 21 is fixedly connected in the metal box 15, and compressed carbon dioxide is filled in the gas cylinders 21; the top of the gas cylinder 21 is fixedly connected with a pressure reducing chamber 22, the top of the gas cylinder 21 in the pressure reducing chamber 22 is hinged with a cover plate 23, and the cover plate 23 is hermetically connected with the gas cylinder 21; the top of the metal box 15 is provided with a spray hole 24 at the position corresponding to the cover plate 23; a third hole 25 is horizontally formed in the top of the second hole 19, and one end, close to the electrical component 14, of the third hole 25 penetrates through the metal box 15; a sliding column 26 is connected in the third hole 25 in a sliding and sealing mode, and a tension spring is fixedly connected between the sliding column 26 and the bottom of the third hole 25; the bottom of the third hole 25 is communicated with the cavity 16, one end of the sliding column 26, which is far away from the tension spring, is fixedly connected with a mandril 27, and the mandril 27 penetrates through the pressure reduction cavity 22 and is in sliding connection with the pressure reduction cavity 22; the top of one side of the cover plate 23, which is far away from the hinged part with the gas cylinder 21, is connected with a pressure plate 28 in a sliding way, and the pressure plate 28 is fixedly connected with a mandril 27; when electrical component 14 temperature is too high to fire, extrude traveller 26 after the carbon dioxide volume expansion that produces through the decomposition of sodium bicarbonate in cavity 16, and then make traveller 26 slide back cavity 16 through No. three holes 25 and No. two holes 19 intercommunication, make a hole 18 normally jet-propelled, cool down and isolated oxygen electrical component 14, traveller 26 promotes ejector pin 27 and clamp plate 28 and laps 23 one side and slides simultaneously, and then make the compressed carbon dioxide blowout in the gas cylinder 21 after apron 23 opens, be full of in the box 1 rapidly, and then put out a fire to the burning things which may cause a fire in the box 1, the carbon dioxide in the gas cylinder 21 absorbs heat when expanding simultaneously, and then reduce the temperature in the box 1 fast, increase fire extinguishing efficiency.
In one embodiment of the present invention, a louver 31 is disposed in the vent hole 3 formed in the side surface of the box body 1; a fan 32 is fixedly connected with the position, corresponding to the shutter 31, in the box body 1 through a bracket; the louver 31 comprises a rotating pin 33 and blades 34, and the middle parts of the blades 34 are rotatably connected with the inner wall of the vent hole 3 through the rotating pin 33; a connecting rod 35 which is vertically arranged is arranged on one side of the shutter 31, and the connecting rod 35 is hinged with the end part of the blade 34; a shaft sleeve 36 is rotatably connected to the rotating pin 33, a first rod 37 and a second rod 38 are fixedly connected to the periphery of the shaft sleeve 36, and the first rod 37 is perpendicular to the second rod 38; a limiting pin 39 is fixedly connected in the ventilation hole 3 at one side of the rotating pin 33 close to the fan 32, the height of the limiting pin 39 is lower than that of the rotating pin 33 at the corresponding position, and the first rod 37 is in contact with the limiting pin 39; the shaft sleeve 36 of the second rod 38 far away from the first rod 37 is fixedly connected with the air plate 4, and the end part of the second rod 38 is fixedly connected with a small ball 41 through a pull rope; when the air bottle 21 is opened, the air pressure in the box body 1 rises instantly, so that the shutter 31 generates air flow which is quickly sprayed out of the box body 1, at the moment, the air flow impacts the air plate 4 to drive the first rod 37 and the second rod 38 to rotate clockwise, then the second rod 38 rotates through the highest point, the small ball 41 drives the second rod 38 to continue rotating, then the first rod 37 drives the connecting rod 35 to move upwards along with the rotation process of the shaft sleeve 36, then the blades 34 are in lap joint with each other after rotating quickly, the shutter 31 is closed, the external air is further reduced from entering the box body 1, and the killing efficiency of fire in the box body 1 is increased.
As an embodiment of the present invention, a spike 42 is fixedly connected to one end of the blade 34 close to the fan 32, an elastic bag 44 is fixedly connected to a position on the upper stage of the blade corresponding to the spike 42 through an angle iron 43, and a foaming sealant is filled in the elastic bag 44; pierce the elasticity bag 44 that links firmly on the last level blade 34 through spine 42, and then make elasticity bag 44 break the back release foaming sealant for the clearance between the full adjacent blade 34 of foaming sealant, and then increase ventilation hole 3's leakproofness, further increase the isolated performance between 1 inner space of box and the outside atmosphere, increase fire extinguishing efficiency.
As an embodiment of the invention, an arc-shaped hook 45 is connected to a position of the end of the blade 34 corresponding to the spine 42, the hook 45 is hinged to the blade 34, and a torsion spring is arranged at the hinged position of the hook 45 and the blade 34; the end part of the blade 34, far away from the spine 42, of the hook 45 is provided with a limiting seat, one end, close to the hook 45, in the blade 34 is provided with a sliding hole 46, and a magnetic column 47 is connected in the sliding hole 46 in a sliding manner; when the louver 31 normally works, the magnetic columns 47 attract the hooks 45 to enable the hooks 45 to rotate and then reduce air resistance between the adjacent blades 34, when the blades 34 rotate clockwise and are closed, the magnetic columns 47 slide downwards in the sliding holes 46, the hooks 45 are enabled to open under the action of the torsion springs, then the hooks 45 clamp the angle iron 43, connection firmness between the adjacent blades 34 is further improved, and sealing performance of the ventilation holes 3 is further improved.
As an implementation mode of the invention, a clamping hole 48 is formed in one side of the angle iron 43 away from the blade 34, a blind hole 49 is formed in the position, corresponding to the clamping hole 48, on the hook 45, a clamping column 5 is connected in the blind hole 49 in a sliding manner, and a spring is fixedly connected between the clamping column 5 and the bottom of the blind hole 49; after the hook 45 is clamped into the angle iron 43, the magnetic column 47 in the sliding hole 46 slides to the bottom of the sliding hole 46, then the magnetic column 47 moves to a clamping corresponding position, the magnetic column 47 is attracted to clamp, so that the clamping column 5 extends out of the blind hole 49 and then is inserted into the clamping hole 48, and further the connection firmness between the adjacent blades 34 is further improved.
As an embodiment of the present invention, a diversion trench 51 is formed inside the hook 45, and the bottom of the diversion trench 51 is wavy; the landslide elastic bag 44 is hooked on the angle iron 43 through the hook 45, the flowing efficiency of foaming sealant is further increased, the foaming sealant flows into a gap between the hook 45 and the angle iron 43 through the diversion trench 51, the wavy shape of the bottom is matched, the adhesion firmness between the hook 45 and the angle iron 43 is further increased, and the sealing performance of the vent hole 3 is increased.
When the electric heating box works, carbon dioxide and water are generated by heating sodium bicarbonate stored in the metal box 15, and meanwhile, heat of the metal box 15 is absorbed, so that the temperature of the electric element 14 is reduced, meanwhile, carbon dioxide generated in the cavity 16 is sprayed to the first hole 18 and the chute 17 after passing through the second hole 19, so that the corresponding position of the electric element 14 is isolated from oxygen in the air, electric sparks are reduced, and the electricity utilization safety of the distribution box is further ensured; through the downward-inclined first hole 18, when the airflow generated in the cavity 16 carries dust generated by decomposing sodium bicarbonate, the dust is filtered and decelerated through the filter screen 2, so that powder is settled towards the bottom of the second hole 19, the influence of the dust blown out from the first hole 18 on a circuit in the distribution box is reduced, short circuit caused by moisture absorption after the dust is accumulated on the electrical component 14 is avoided, and the electricity utilization safety of the distribution box is further ensured; when the electrical element 14 is ignited due to overhigh temperature, the sliding column 26 is extruded after the volume of carbon dioxide generated by decomposing sodium bicarbonate in the cavity 16 expands, the cavity 16 is communicated with the second hole 19 through the third hole 25 after the sliding column 26 slides, the first hole 18 is used for normally spraying air, the temperature of the electrical element 14 is reduced, oxygen is isolated, meanwhile, the sliding column 26 pushes the ejector rod 27 and the pressing plate 28 to slide relative to one side of the cover plate 23, compressed carbon dioxide in the gas cylinder 21 is sprayed out after the cover plate 23 is opened, the gas cylinder 1 is rapidly filled in the box body 1, a fire source in the box body 1 is extinguished, and meanwhile, the carbon dioxide in the gas cylinder 21 absorbs heat when expanding, so that the temperature in the box body 1 is rapidly reduced, and the fire extinguishing efficiency is increased; when the gas cylinder 21 is opened, the gas pressure in the box body 1 rises instantly, so that the louver 31 generates gas flow which is sprayed out of the box body 1 quickly, at the moment, the gas flow impacts the wind plate 4 to drive the first rod 37 and the second rod 38 to rotate clockwise, so that the second rod 38 rotates through the highest point, then the small ball 41 drives the second rod 38 to continue to rotate, further the first rod 37 drives the connecting rod 35 to move upwards along with the rotation of the shaft sleeve 36, further the blades 34 are connected with each other after rotating quickly, the louver 31 is closed, external air is further reduced from entering the box body 1, and the killing efficiency of fire in the box body 1 is increased; the sharp pricks 42 pierce the elastic bag 44 fixedly connected to the upper-stage blades 34, so that the foaming sealant is released after the elastic bag 44 is broken, the foaming sealant fills the gaps between the adjacent blades 34, the sealing performance of the vent holes 3 is improved, the isolation performance between the inner space of the box body 1 and the external atmosphere is further improved, and the fire extinguishing efficiency is improved; when the shutter 31 normally works, the magnetic columns 47 attract the hooks 45 to enable the hooks 45 to reduce air resistance between adjacent blades 34 after rotating, when the blades 34 rotate clockwise and are closed, the magnetic columns 47 slide downwards in the sliding holes 46, the hooks 45 are further enabled to open under the action of the torsion springs, then the hooks 45 clamp the angle iron 43, connection firmness between adjacent blades 34 is further improved, and sealing performance of the ventilation holes 3 is further improved; after the hook 45 is clamped into the angle iron 43, the magnetic column 47 in the sliding hole 46 slides to the bottom of the sliding hole 46, then the magnetic column 47 moves to a clamping corresponding position, the magnetic column 47 is attracted and clamped, so that the clamping column 5 extends out of the blind hole 49 and then is inserted into the clamping hole 48, and further the connection firmness between the adjacent blades 34 is further improved; the landslide elastic bag 44 is hooked on the angle iron 43 through the hook 45, the flowing efficiency of foaming sealant is further increased, the foaming sealant flows into a gap between the hook 45 and the angle iron 43 through the diversion trench 51, the wavy shape of the bottom is matched, the adhesion firmness between the hook 45 and the angle iron 43 is further increased, and the sealing performance of the vent hole 3 is increased.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Explosion-proof block terminal, its characterized in that: comprises a box body (1) and a supporting leg (11); the support legs (11) are fixedly connected to the bottom of the box body (1), and the side surface of the box body (1) is hinged with a box door (12); the box body (1) is fixedly connected with a mounting plate (13) through a group of insulating columns, and the mounting plate (13) is fixedly connected with an electric appliance element (14); the periphery of the electrical appliance element (14) is fixedly connected with a heat-conducting metal box (15), the metal box (15) wraps the periphery of the electrical appliance element (14) in a U shape, and sodium bicarbonate is filled in a cavity (16) formed in one side of the metal box (15); a group of vertically arranged sliding grooves (17) are formed in the side wall of the cavity (16) close to the electric element (14), a group of first holes (18) are uniformly distributed at the bottom of the sliding grooves (17), and the bottoms of the first holes (18) are communicated with the cavity (16) through second holes (19);
one end of the first hole (18) close to the second hole (19) is inclined downwards; the upper part of one end of the first hole (18) close to the second hole (19) is hinged with an arc-shaped elastic filter screen (2), and the end part of the filter screen (2) props against the second hole (19) and is in sliding connection with the second hole (19);
a group of gas cylinders (21) are fixedly connected in the metal box (15), and compressed carbon dioxide is filled in the gas cylinders (21); the top of the gas cylinder (21) is fixedly connected with a pressure reduction cavity (22), the top of the gas cylinder (21) in the pressure reduction cavity (22) is hinged with a cover plate (23), and the cover plate (23) is hermetically connected with the gas cylinder (21); the top of the metal box (15) is provided with a spray hole (24) at a position corresponding to the cover plate (23); a third hole (25) is horizontally formed in the top of the second hole (19), and one end, close to the electrical component (14), of the third hole (25) penetrates through the metal box (15); a sliding column (26) is connected in the third hole (25) in a sliding and sealing mode, and a tension spring is fixedly connected between the sliding column (26) and the bottom of the third hole (25); the bottom of the third hole (25) is communicated with the cavity (16), one end of the sliding column (26) far away from the tension spring is fixedly connected with a push rod (27), and the push rod (27) penetrates through the pressure reduction cavity (22) and is in sliding connection with the pressure reduction cavity (22); the top of one side, away from the hinged part with the gas cylinder (21), of the cover plate (23) is connected with a pressing plate (28) in a sliding mode, and the pressing plate (28) is fixedly connected with the ejector rod (27);
a blind window (31) is arranged in a ventilation hole (3) formed in the side surface of the box body (1); a fan (32) is fixedly connected with the position, corresponding to the shutter (31), in the box body (1) through a bracket; the shutter (31) comprises a rotating pin (33) and blades (34), and the middle parts of the blades (34) are rotatably connected with the inner wall of the ventilation hole (3) through the rotating pin (33); a connecting rod (35) which is vertically arranged is arranged on one side of the shutter (31), and the connecting rod (35) is hinged with the end part of the blade (34); the rotating pin (33) is rotatably connected with a shaft sleeve (36), the periphery of the shaft sleeve (36) is fixedly connected with a first rod (37) and a second rod (38), and the first rod (37) and the second rod (38) are perpendicular to each other; a limiting pin (39) is fixedly connected in the ventilation hole (3) at one side of the rotating pin (33) close to the fan (32), the height of the limiting pin (39) is lower than that of the rotating pin (33) at the corresponding position, and the first rod (37) is in contact with the limiting pin (39); the shaft sleeve (36) on one side, away from the first rod (37), of the second rod (38) is fixedly connected with the air plate (4), and the end part of the second rod (38) is fixedly connected with the small ball (41) through a pull rope.
2. The explosion proof electrical box of claim 1, wherein: one end of each blade (34) close to the fan (32) is fixedly connected with a spine (42), the position, corresponding to the spine (42), of the upper-stage fan blade is fixedly connected with an elastic bag (44) through an angle iron (43), and a foaming sealant is filled in the elastic bag (44).
3. The explosion-proof distribution box of claim 2, wherein: the end part of the blade (34) is connected with an arc-shaped hook (45) at a position corresponding to the spine (42), the hook (45) is hinged with the blade (34), and a torsional spring is arranged at the hinged part of the hook (45) and the blade (34); the end part of the blade (34) on one side, far away from the spine (42), of the hook (45) is provided with a limiting seat, one end, close to the hook (45), in the blade (34) is provided with a sliding hole (46), and a magnetic column (47) is connected in the sliding hole (46) in a sliding mode.
4. The explosion proof electrical box of claim 3, wherein: one side of the angle iron (43) far away from the blade (34) is provided with a clamping hole (48), a blind hole (49) is formed in the position, corresponding to the clamping hole (48), of the hook (45), a clamping column (5) is connected in the blind hole (49) in a sliding mode, and a spring is fixedly connected between the clamping column (5) and the bottom of the blind hole (49).
5. The explosion proof power distribution box of claim 4, wherein: a diversion trench (51) is formed in the inner side of the hook (45), and the bottom of the diversion trench (51) is wavy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585840.9A CN113381322B (en) | 2021-05-27 | 2021-05-27 | Explosion-proof distribution box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585840.9A CN113381322B (en) | 2021-05-27 | 2021-05-27 | Explosion-proof distribution box |
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| CN113381322A CN113381322A (en) | 2021-09-10 |
| CN113381322B true CN113381322B (en) | 2022-11-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103560409B (en) * | 2013-10-10 | 2015-05-13 | 国家电网公司 | High-flame-retardant fireproof cooling distribution box |
| CN104218193B (en) * | 2014-07-30 | 2017-10-31 | 浙江超威创元实业有限公司 | A kind of lithium battery with fireproof anti-explosion device and the electric car using the battery |
| DE102017005287B3 (en) * | 2017-06-02 | 2018-10-04 | DATANET GmbH | Safety cabinet for active electrical and / or electronic components |
| CN207818847U (en) * | 2018-01-17 | 2018-09-04 | 江苏天叙照明科技发展有限公司 | A kind of explosion-proof heat dissipation lithium battery |
| CN210016147U (en) * | 2019-06-06 | 2020-02-04 | 深圳市凌祺实业有限公司 | Block terminal protecting crust that security performance is high |
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Effective date of registration: 20221020 Address after: 417000 chuang'an Industrial Park, Matoushan road section, Loudi Avenue, Lianyuan City, high tech Industrial Development Zone, Loudi City, Hunan Province Applicant after: HUNAN CHUANGAN FLAMEPROOF ELECTRICAPPLIANCES Co.,Ltd. Address before: 215000 No. 682, Yinzhong South Road, Wuzhong District, Suzhou City, Jiangsu Province Applicant before: Dai Zhonghua |
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