CN111864562B

CN111864562B - Electrical cabinet with fire extinguishing and cooling functions

Info

Publication number: CN111864562B
Application number: CN202010679497.XA
Authority: CN
Inventors: 孟祥浩
Original assignee: Anhui Ruihua Electric Co ltd
Current assignee: Anhui Ruihua Electric Co.,Ltd.
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2022-02-01
Anticipated expiration: 2040-07-15
Also published as: CN111864562A

Abstract

The invention discloses an electric cabinet with fire extinguishing and cooling functions, which belongs to the field of fire control, and the electric cabinet with the fire extinguishing and cooling functions comprises an electric cabinet body, a fixing plate, a strip-shaped limiting block, a pressing plate, a pricking needle, a foaming agent, aluminum sulfate and sodium bicarbonate solution, a discharging hole, a PVC film and a water tank, wherein when the outer part of the electric cabinet meets open fire, the open fire burns on the outer part of the glass tube, so that carbon dioxide gas in the glass tube expands to cause the glass tube to burst, the strip-shaped limiting block enables the fixing plate to stably slide downwards in the limiting groove through balls, the pressing plate extrudes the storage bag through the fixing plate, the pricking needle punctures the storage bag and penetrates through the foaming agent and the separating film, the foaming agent, the aluminum sulfate and the sodium bicarbonate solution are mixed to generate a large amount of foam and carbon dioxide, the foam and the carbon dioxide are sprayed out from the discharging hole to cover the open fire, when the fixing plate meets high temperature, the PVC film is melted at high temperature, inorganic salt in a T-shaped cylinder falls into a reaction cavity, and the inorganic salt and reacts with the water in the reaction cavity to generate a heat absorption phenomenon, thereby cooling the outer wall of the electrical cabinet.

Description

Electrical cabinet with fire extinguishing and cooling functions

Technical Field

The invention relates to the field of fire fighting, in particular to an electrical cabinet with fire extinguishing and cooling functions.

Background

The electrical cabinet is a cabinet which is processed by steel materials and used for protecting components from working normally. The electrical cabinet manufacturing materials are generally divided into hot rolled steel plates and cold rolled steel plates. The cold-rolled steel sheet is softer than hot-rolled steel sheet, more is fit for the preparation of regulator cubicle. The electric cabinet is widely used in chemical industry, environmental protection industry, electric power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, traffic industry and the like.

The electric cabinet is also called as a power distribution cabinet, the power distribution cabinet is divided into a power distribution cabinet, a lighting distribution cabinet and a metering cabinet, and is the final-stage equipment of the power distribution system, the power distribution cabinet is a general name of a motor control center, and the power distribution cabinet is used in occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich applications, where they distribute the power from a circuit of a higher level of distribution equipment to nearby loads, which provide protection, monitoring and control of the loads.

In many industries such as electric power, communication, traffic, highway and the like, floor type electrical cabinets are inevitably used beside roads in large quantity for mounting various electric power equipment, and the electrical cabinets are formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in closed or semi-closed metal cabinets or on screens according to electrical wiring requirements to form low-voltage distribution devices.

At present, a large number of electrical cabinets need to be used in electrical engineering, when open fire happens outside the electrical cabinets, workers cannot timely put out fire, the open fire even spreads to the multiple electrical cabinets, electronic components inside most of the electrical cabinets are damaged, and loss cannot be effectively reduced.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an electrical cabinet with fire extinguishing and cooling functions, when the outside of the electrical cabinet encounters open fire, the open fire burns on the outside of a glass tube, so that carbon dioxide gas inside the glass tube expands to cause the glass tube to burst, a strip-shaped limiting block enables a fixing plate to stably slide downwards through balls in a limiting groove, the fixing plate enables a pressing plate to extrude a storage bag, a pricking needle punctures the storage bag and penetrates through a foaming agent and a separating membrane, so that the foaming agent, aluminum sulfate and sodium bicarbonate solution are mixed to generate a large amount of foam and carbon dioxide, the foam and the carbon dioxide are sprayed out from a discharge hole to cover the open fire, when the fixing plate encounters high temperature caused by the open fire, a PVC membrane is melted at high temperature to cause inorganic salt inside a T-shaped cylinder to fall into a reaction cavity, so that the inorganic salt and water inside the reaction cavity are mixed to generate a heat absorption phenomenon, thereby cooling the outer wall of the electrical cabinet.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

An electrical cabinet with fire extinguishing and cooling functions comprises a bottom plate, wherein a fixing plate is arranged on the upper side of the bottom plate, the electrical cabinet is fixedly connected to the upper end of the fixing plate, grooves are formed in the ends, close to each other, of the fixing plate and the bottom plate, matched glass tubes are fixedly connected to the insides of the grooves, carbon dioxide gas is filled in the glass tubes, a plurality of through holes which are uniformly distributed are formed in the upper end of the bottom plate in a chiseled mode, the through holes are located on the inner sides of the grooves, connecting rods are inserted into the through holes, a pair of strip-shaped limiting blocks is fixedly connected to the outer ends of the connecting rods, a pair of limiting grooves are formed in the inner walls of the through holes in a chiseled mode, the limiting grooves are matched with the strip-shaped limiting blocks, rolling grooves are formed in the inner side walls of the limiting grooves, rolling balls are connected to the rolling grooves in a rolling mode, and the outer ends of the rolling balls are in contact with the strip-shaped limiting blocks;

a storage cavity is drilled in the bottom plate, a pressing plate is arranged in the storage cavity, the upper end of the pressing plate is fixedly connected with the lower end of the connecting rod, the lower end of the pressing plate is fixedly connected with a plurality of needles which are uniformly distributed, a storage bag is arranged in the storage cavity, the pressing plate is positioned on the upper side of the storage bag, the lower ends of the needles correspond to the upper ends of foaming agents, a separation film is fixedly connected between the inner walls of the storage bag, aluminum sulfate is filled on the upper side of the separation film, a sodium bicarbonate solution is filled on the lower side of the separation film, a plurality of foaming agents which are uniformly distributed are fixedly connected on the upper end wall of the storage bag, the storage bag is positioned on the lower side of the pressing plate, a plurality of discharge holes which are uniformly distributed are drilled on the outer side wall of the storage cavity, and the upper end of the connecting rod is fixedly connected with the lower end of the fixing plate;

the inside excavation reaction chamber of fixed plate, the inside injection of reaction chamber has water, the last endwall of fixed plate is excavated there is T type through-hole, a fixedly connected with T type section of thick bamboo between the inner wall of T type through-hole, the inside packing of T type section of thick bamboo has inorganic salt, fixedly connected with PVC membrane between the inner wall of T type section of thick bamboo, inorganic salt is located the upside of PVC membrane.

Furthermore, the cabinet door is fixedly connected with a sealing strip at one end of the cabinet, which is in contact with the cabinet door, and the sealing strip is mainly made of PVC material.

Furthermore, a heat dissipation opening is formed in the upper end of the electric cabinet, a filter screen is fixedly connected between the inner walls of the heat dissipation openings, and the filter screen is made of an aluminum alloy material.

Furthermore, the outer side of the separation membrane and the inner wall of the storage bag are coated with a silicon dioxide coating.

Further, the cross section of recess is circular shape, the inner wall of recess is dug and is the blunt shape, the inner wall fixedly connected with sponge layer of recess.

The electrical cabinet with the functions of extinguishing fire and reducing temperature comprises the following steps:

s1, when the outside of the electrical cabinet meets open fire, the open fire burns outside the glass tube, so that the carbon dioxide inside the glass tube expands to cause the glass tube to burst, and the strip-shaped limiting block enables the fixing plate to stably slide downwards in the limiting groove through the balls;

s2, extruding the storage bag by the pressing plate through the fixing plate, pricking the storage bag by a needle and penetrating the foaming agent and the separation membrane to mix the foaming agent, the aluminum sulfate and the sodium bicarbonate solution to generate a large amount of foam and carbon dioxide, and spraying the foam and the carbon dioxide from the position of the discharge hole to cover the open fire;

s3, when the fixed plate meets the open fire and generates high temperature, the PVC film meets the high-temperature melting, the inorganic salt inside the T-shaped cylinder drops into the reaction cavity, the inorganic salt and the water mixed reaction inside the reaction cavity generate the endothermic phenomenon, and the outer wall of the electric cabinet is cooled.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is when the regulator cubicle outside meets the naked light, the outside burning of naked light at the glass pipe, make the inside carbon dioxide gas expansion of glass pipe lead to the glass pipe to explode and split, the bar stopper makes the stable lapse of fixed plate through the ball in the spacing inslot, make the clamp plate will deposit the package extrusion through the fixed plate, prick the needle and puncture and deposit the package and run through foamer and divider membrane, make the foamer, aluminium sulfate and sodium bicarbonate solution mix and produce a large amount of foams and carbon dioxide, foam and carbon dioxide are spout from the discharge hole position, thereby cover the naked light, when the fixed plate meets the naked light and produces high temperature, the PVC membrane meets high temperature melting, lead to the inside inorganic salt of T type section of thick bamboo to drop to the reaction intracavity, make inorganic salt and the inside water mixing reaction of reaction chamber take place endothermic phenomenon, thereby cool down the outer wall of regulator cubicle.

(2) The inner part of the bottom plate is provided with a storage cavity, the storage cavity is internally provided with a pressing plate, the upper end of the pressing plate is fixedly connected with the lower end of a connecting rod, the lower end of the pressing plate is fixedly connected with a plurality of uniformly distributed pricking pins, the storage cavity is internally provided with a storage bag, a separation film is fixedly connected between the inner walls of the storage bag, aluminum sulfate is filled on the upper side of the separation film, a sodium bicarbonate solution is filled on the lower side of the separation film, the upper end wall of the storage bag is fixedly connected with a plurality of uniformly distributed foaming agents, the storage bag is positioned on the lower side of the pressing plate, the outer side wall of the storage cavity is provided with a plurality of uniformly distributed discharge holes, the upper end of the connecting rod is fixedly connected with the lower end of a fixed plate, when the pressing plate rapidly extrudes the storage bag in the storage cavity, the storage bag is pricked through the lower end of the pricking pins, so that the foaming agents, the aluminum sulfate and the sodium bicarbonate solution are rapidly fused and react, a large amount of foam and carbon dioxide are generated and are sprayed out from the discharge holes, through the foam adhesion on the surface of combustible, make combustible and air isolated, the effectual burning condition who reduces the naked light of carbon dioxide to reach effectual peripheral naked light of regulator cubicle and eliminate.

(3) The inside excavation reaction chamber of fixed plate, the inside injection of reaction chamber has water, the last endwall of fixed plate is excavated there is T type through-hole, a fixedly connected with T type section of thick bamboo between the inner wall of T type through-hole, the inside packing of T type section of thick bamboo has inorganic salt, fixedly connected with PVC membrane between the inner wall of T type section of thick bamboo, inorganic salt is located the upside of PVC membrane, when the effectual reduction of naked light, the peripheral higher high electronic component who easily makes the regulator cubicle inside is impaired, can melt the shrink when the PVC membrane meets high temperature, make the inside inorganic salt of T type section of thick bamboo drop to the reaction intracavity, and with the inside water mixing reaction heat absorption of reaction chamber, carry out the heat absorption cooling to regulator cubicle and regulator cubicle inside, thereby reach the effectual protection to regulator cubicle and the inside electronic component of regulator cubicle.

(4) The regulator cubicle is with the equal fixedly connected with sealing strip of the one end that the cabinet door contacted, and the sealing strip is mainly made by the PVC material, and the inside waterproof, syllable-dividing, thermal-insulated, dirt-proof effect of effectual improvement regulator cubicle.

(5) The upper end of thermovent is dug there is the thermovent, fixedly connected with filter screen between the thermovent inner wall, and the filter screen has the aluminum alloy material to make, effectively gets rid of the inside high temperature of regulator cubicle, leads the discharge through the effectual heat to the regulator cubicle inside of filter screen.

(6) The outer side of the separation membrane and the inner wall of the storage bag are coated with silicon dioxide coatings, and the foaming agent, the aluminum sulfate and the sodium bicarbonate solution do not react with the silicon dioxide, so that the stability of the liquid in the storage bag is effectively improved.

(7) The cross section of recess is personally submitted circular shape, and the inner wall of recess is dug and is blunt shape, and the inner wall fixedly connected with sponge layer of recess, the effectual stability that improves between glass pipe and the recess inner wall reduces the glass pipe and receives the broken risk of external pressure.

(8) The pressing plate is positioned at the upper side of the storage bag, the lower end of the needle corresponds to the upper end of the foaming agent, the foaming agent is effectively enabled to be rapidly fused and reacted with aluminum sulfate and sodium bicarbonate solution, and open fire is rapidly eliminated.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural diagram of a bottom plate of the present invention in a front view;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a schematic perspective view of a connecting rod according to the present invention;

fig. 6 is a schematic top view of the connecting rod of the present invention.

The reference numbers in the figures illustrate:

the device comprises a base plate 1, a fixing plate 2, a glass tube 3, a connecting rod 4, an electrical cabinet 5, a sealing strip 501, a discharge hole 6, a heat dissipation port 7, a filter screen 8, a foaming agent 9, aluminum sulfate 10, sodium bicarbonate solution 11, carbon dioxide gas 13, a separation membrane 12, a groove 14, a storage cavity 15, water 16, a needle 17, a pressing plate 18, a through hole 19T-shaped, a cylinder 20T-shaped, a PVC membrane 21, a strip-shaped limiting block 22, a rolling groove 23 and a rolling ball 24.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-6, an electrical cabinet with fire extinguishing and cooling functions comprises a bottom plate 1, a fixing plate 2 is arranged on the upper side of the bottom plate 1, an electrical cabinet 5 is fixedly connected to the upper end of the fixing plate 2, the electrical cabinet 5 and the fixing plate 2 are made of aluminum alloy materials and have a high heat guiding effect, grooves 14 are formed in the ends, close to each other, of the fixing plate 2 and the bottom plate 1, matched glass tubes 3 are fixedly connected to the insides of the grooves 14, carbon dioxide gas 13 is filled in the glass tubes 3, a plurality of uniformly distributed through holes are formed in the upper end of the bottom plate 1 and located on the inner sides of the grooves 14, connecting rods 4 are inserted into the through holes, a pair of strip-shaped limiting blocks 22 are fixedly connected to the outer ends of the connecting rods 4, a pair of limiting grooves are formed in the inner walls of the through holes, the limiting grooves are matched with the strip-shaped limiting blocks 22, rolling grooves 23 are formed in the inner side walls of the limiting grooves, and are connected with rolling balls 24 in a rolling manner, ball 24's outer end and bar stopper 22 contact, when the outside of regulator cubicle 5 takes place the naked light, the outer end and the naked light contact of glass pipe 3, lead to the inside carbon dioxide gas 13 of glass pipe 3 to receive the high temperature inflation, make glass pipe 3 explode and split and release a large amount of carbon dioxide, thereby effectively reduce naked light combustion efficiency, explode the back when glass pipe 3, fixed plate 2 promotes clamp plate 18 through connecting rod 4 and is depositing the inside lapse in chamber 15, through the roll between bar stopper 22 and the ball 24, thereby improve stability.

Referring to fig. 1-3, a storage cavity 15 is cut in a bottom plate 1, a pressing plate 18 is disposed in the storage cavity 15, the upper end of the pressing plate 18 is fixedly connected with the lower end of a connecting rod 4, the lower end of the pressing plate 18 is fixedly connected with a plurality of uniformly distributed needles 17, a storage bag is disposed in the storage cavity 15, a separation film 12 is fixedly connected between the inner walls of the storage bag, aluminum sulfate 10 is filled on the upper side of the separation film 12, a sodium bicarbonate solution 11 is filled on the lower side of the separation film 12, a plurality of uniformly distributed foaming agents 9 are fixedly connected with the upper end wall of the storage bag, the storage bag is located on the lower side of the pressing plate 18, a plurality of uniformly distributed discharge holes 6 are cut on the outer side wall of the storage cavity 15, the upper end of the connecting rod 4 is fixedly connected with the lower end of a fixing plate 2, when the pressing plate 18 rapidly presses the storage bag in the storage cavity 15, the storage bag is punctured by the lower end of the needles 17, so that the foaming agents 9, Aluminum sulfate 10 and sodium bicarbonate solution 11 fuse fast and react, produce a large amount of foams and carbon dioxide and spout from the position of discharge hole 6, through the foam adhesion on the surface of combustible, make combustible isolated with the air, carbon dioxide effectively reduces the burning condition of open fire to reach the effective peripheral open fire of regulator cubicle and eliminate.

Referring to fig. 2-6, a reaction chamber is formed inside the fixing plate 2, water 16 is injected into the reaction chamber, a T-shaped through hole 19 is formed in the upper end wall of the fixing plate 2, a T-shaped cylinder 20 is fixedly connected between the inner walls of the T-shaped through hole 19, inorganic salts are filled inside the T-shaped cylinder 20, a PVC membrane 21 is fixedly connected between the inner walls of the T-shaped cylinder 20, and the inorganic salts are located on the upper side of the PVC membrane 21, when the open fire is effectively reduced, electronic components inside the electrical cabinet are easily damaged due to the high height of the periphery of the electrical cabinet, and when the PVC membrane 21 encounters high temperature, the inorganic salts inside the T-shaped cylinder 20 fall into the reaction chamber and react with the water 16 inside the reaction chamber to absorb heat, so as to absorb heat and cool the electrical cabinet 5 and the interior of the electrical cabinet 5, thereby effectively protecting the electronic components inside the electrical cabinet 5 and the electrical cabinet 5.

Please refer to fig. 1, the electrical cabinet 5 is with the equal fixedly connected with sealing strip 501 of one end that the cabinet door contacts, sealing strip 501 is mainly made by the PVC material, the inside waterproof, syllable-dividing, thermal-insulated, dirt-proof effect of effectual improvement electrical cabinet 5, the upper end of electrical cabinet 5 is dug has thermovent 7, fixedly connected with filter screen 8 between the thermovent 7 inner wall, filter screen 8 is made by the aluminum alloy material, effectively get rid of the inside high temperature of electrical cabinet 5, guide the discharge through the effectual heat to electrical cabinet 5 inside of filter screen 8.

Referring to fig. 2-3, the outer side of the separation film 12 and the inner wall of the storage bag are coated with a silica coating, the foaming agent 9, aluminum sulfate 10 and sodium bicarbonate solution 11 do not react with silica, so that the stability of the liquid in the storage bag is effectively improved, the cross section of the groove 14 is circular, the inner wall of the groove 14 is cut to be blunt, the inner wall of the groove 14 is fixedly connected with a sponge layer, so that the stability between the glass tube 3 and the inner wall of the groove 14 is effectively improved, the risk that the glass tube 3 is broken by external pressure is reduced, the pressing plate 18 is positioned on the upper side of the storage bag, the lower end of the pricking pin 17 corresponds to the upper end of the foaming agent 9, the foaming agent 9 is effectively and rapidly fused with the aluminum sulfate 10 and the sodium bicarbonate solution 11, and the open fire is rapidly eliminated.

An electrical cabinet with fire extinguishing and temperature reducing functions comprises the following steps:

s1, when the outside of the electrical cabinet encounters open fire, the open fire burns outside the glass tube 3, so that the carbon dioxide gas 13 inside the glass tube 3 expands to crack the glass tube 3, and the strip-shaped limiting block 22 enables the fixing plate 2 to stably slide downwards in the limiting groove through the ball 24;

s2, pressing the storage bag by the pressing plate 18 through the fixing plate 2, puncturing the storage bag by the puncturing needle 17 and penetrating the foaming agent 9 and the separation membrane 12, mixing the foaming agent 9, the aluminum sulfate 10 and the sodium bicarbonate solution 11 to generate a large amount of foam and carbon dioxide, and spraying the foam and the carbon dioxide from the position of the discharge hole 6 so as to cover the open fire;

s3, when the fixing plate 2 meets the open fire to generate high temperature, the PVC film 21 meets the high-temperature melting, the inorganic salt in the T-shaped cylinder 20 drops into the reaction cavity, the inorganic salt and the water 16 in the reaction cavity are subjected to mixed reaction to generate the endothermic phenomenon, and the outer wall of the electrical cabinet 5 is cooled.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides an regulator cubicle with cooling function of putting out a fire, includes bottom plate (1), the upside of bottom plate (1) is equipped with fixed plate (2), the upper end fixedly connected with regulator cubicle (5) of fixed plate (2), its characterized in that: one end of the fixing plate (2) close to the bottom plate (1) is provided with a groove (14), the inside of the groove (14) is fixedly connected with a matched glass tube (3), the inside of the glass tube (3) is filled with carbon dioxide gas (13), the upper end of the bottom plate (1) is provided with a plurality of through holes which are evenly distributed and are positioned at the inner side of the groove (14), a connecting rod (4) is inserted in the through hole, the outer end of the connecting rod (4) is fixedly connected with a pair of strip-shaped limiting blocks (22), the inner wall of the through hole is provided with a pair of limiting grooves which are matched with the strip-shaped limiting blocks (22), a rolling groove (23) is formed in the inner side wall of the limiting groove, a rolling ball (24) is connected inside the rolling groove (23) in a rolling mode, and the outer end of the rolling ball (24) is in contact with the strip-shaped limiting block (22);

the inner part of the bottom plate (1) is provided with a storage cavity (15), the inner part of the storage cavity (15) is provided with a pressing plate (18), the upper end of the pressing plate (18) is fixedly connected with the lower end of the connecting rod (4), the lower end of the pressing plate (18) is fixedly connected with a plurality of needles (17) which are uniformly distributed, the inner part of the storage cavity (15) is provided with a storage bag, the pressing plate (18) is positioned at the upper side of the storage bag, the lower end of the needles (17) corresponds to the upper end of the foaming agent (9), a separation film (12) is fixedly connected between the inner walls of the storage bag, the upper side of the separation film (12) is filled with aluminum sulfate (10), the lower side of the separation film (12) is filled with sodium bicarbonate solution (11), the upper end wall of the storage bag is fixedly connected with a plurality of foaming agent (9) which are uniformly distributed, and the storage bag is positioned at the lower side of the pressing plate (18), the outer side wall of the storage cavity (15) is provided with a plurality of uniformly distributed discharge holes (6), and the upper end of the connecting rod (4) is fixedly connected with the lower end of the fixed plate (2);

the inside excavation reaction chamber of fixed plate (2), the inside injection of reaction chamber has water (16), the upper end wall excavation of fixed plate (2) has T type through-hole (19), fixedly connected with T type section of thick bamboo (20) between the inner wall of T type through-hole (19), the inside packing of T type section of thick bamboo (20) has inorganic salt, fixedly connected with PVC membrane (21) between the inner wall of T type section of thick bamboo (20), inorganic salt is located the upside of PVC membrane (21).

2. The electrical cabinet with fire extinguishing and temperature reducing functions according to claim 1, characterized in that: the cabinet door sealing structure is characterized in that sealing strips (501) are fixedly connected to one ends of the electrical cabinet (5) which are in contact with the cabinet door, and the sealing strips (501) are mainly made of PVC materials.

3. The electrical cabinet with fire extinguishing and temperature reducing functions according to claim 1, characterized in that: the upper end of the electrical cabinet (5) is provided with a heat dissipation opening (7), a filter screen (8) is fixedly connected between the inner walls of the heat dissipation opening (7), and the filter screen (8) is made of an aluminum alloy material.

4. The electrical cabinet with fire extinguishing and temperature reducing functions according to claim 1, characterized in that: the outer side of the separation membrane (12) and the inner wall of the storage bag are coated with silicon dioxide coatings.

5. The electrical cabinet with fire extinguishing and temperature reducing functions according to claim 1, characterized in that: the cross section of recess (14) is circular shape, the inner wall excavation of recess (14) is blunt shape, the inner wall fixedly connected with sponge layer of recess (14).

6. The electrical cabinet with fire extinguishing and temperature reducing functions according to any one of claims 1 to 5, wherein: the method comprises the following steps:

s1, when the outside of the electrical cabinet meets open fire, the open fire burns on the outside of the glass tube (3), so that carbon dioxide gas (13) inside the glass tube (3) expands to crack the glass tube (3), and the strip-shaped limiting block (22) enables the fixing plate (2) to stably slide downwards through the ball (24) in the limiting groove;

s2, pressing the storage bag by the pressing plate (18) through the fixing plate (2), pricking the storage bag by the pricking pin (17) and penetrating the foaming agent (9) and the separation membrane (12), so that the foaming agent (9), the aluminum sulfate (10) and the sodium bicarbonate solution (11) are mixed to generate a large amount of foam and carbon dioxide, and the foam and the carbon dioxide are sprayed out from the position of the discharge hole (6) to cover the open fire;

s3, when the fixing plate (2) meets the open fire to generate high temperature, the PVC film (21) meets the high-temperature melting, inorganic salt in the T-shaped cylinder (20) falls into the reaction cavity, the inorganic salt and water (16) in the reaction cavity are subjected to mixed reaction to generate an endothermic phenomenon, and therefore the outer wall of the electric cabinet (5) is cooled.