CN115579747A

CN115579747A - Smart electric meter with automatic fire extinguishing function

Info

Publication number: CN115579747A
Application number: CN202211235354.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-01-06

Abstract

The invention discloses an intelligent electric meter with an automatic fire extinguishing function, and relates to the technical field of intelligent electric meters. The intelligent fire detection system comprises an electric meter box and an electric meter main body, wherein the electric meter main body is fixed on the front surface of the inner wall of the electric meter box, an intelligent fire detection device is fixed at the bottom of the electric meter main body, a cooling fan set is fixed at the bottom of the inner wall of the electric meter main body, an automatic fire extinguishing device is arranged at the top of the electric meter main body and comprises an electric telescopic device and a carbon dioxide spraying box, and the electric telescopic device is fixed at the top of the electric meter box. According to the invention, through the arrangement of the automatic fire extinguishing device, the intelligent fire detecting device, the electric telescopic device and the sliding plate are matched to drive the clip-shaped sealing plate and the through hole plate to respectively block a gap of an opening and closing door of the electric meter box and block an air inlet of the cooling fan set, and a sealed environment is formed inside the electric meter box, so that the problem of combustion-supporting fire when external oxygen enters the electric meter box is avoided.

Description

Smart electric meter with automatic fire extinguishing function

Technical Field

The invention relates to the technical field of intelligent electric meters, in particular to an intelligent electric meter with an automatic fire extinguishing function.

Background

Along with electric power is used popularly, we just need install the ammeter and come to measure the electric energy, and the ammeter is generally equipped with the ammeter case and uses, and the inside radiator fan that can install of ammeter case commonly used dispels the heat to the ammeter, realizes carrying out overheat protection to the ammeter.

Patent No. CN 213482311U's utility model relates to an electric power technology field provides an automatic radiating ammeter case, including box subassembly and cooling radiator unit, the ammeter is installed electric connection among the ammeter case, and the thermovent is seted up in the both sides tank wall of ammeter case, and the inclined plane slope is fixed to be set up in the bottom of thermovent, and the articulated range in the inboard of thermovent of adjustable fender, dust screen install in the outside of thermovent, and the income wind cavity sets up in the bottom of ammeter case, and the sloping platform is fixed to be set up in the both sides of income wind cavity. The utility model discloses a through setting up thermocouple thermometer and motor, the thermocouple thermometer is provided with the temperature safety value, thermocouple thermometer can connect external DC power supply starter motor after exceeding the temperature safety value, the motor drives the heat dissipation fan and dispels the heat the cooling, exchange through cold air and hot-air and can take away inside heat, make inside electronic component's temperature reduce, prevent to lead to ageing or damaging under the high temperature state, be applicable to the production and the use of automatic radiating ammeter case, but this ammeter is when the conflagration breaing out, can't in time put out the conflagration.

The current electricity meter has the following problems: when the electric meter is overheated and a fire hazard occurs, the fire hazard cannot be automatically and timely extinguished, components of the electric meter are easily damaged, and further economic loss is caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the intelligent ammeter with the automatic fire extinguishing function, and solves the problems that the fire can not be automatically extinguished in time when the ammeter is overheated and a fire disaster occurs, which are brought forward in the background art, so that components of the ammeter are easily damaged, and further economic loss is caused.

In order to realize the purpose, the invention is realized by the following technical scheme: an intelligent ammeter with an automatic fire extinguishing function comprises an ammeter box and an ammeter main body, wherein the ammeter main body is fixed on the front surface of the inner wall of the ammeter box, an intelligent fire detection device is fixed at the bottom of the ammeter main body, a cooling fan set is fixed at the bottom of the inner wall of the ammeter main body, an automatic fire extinguishing device is arranged at the top of the ammeter main body, the automatic fire extinguishing device comprises an electric telescopic device and a carbon dioxide spraying box, the electric telescopic device is fixed at the top of the ammeter box, a sliding plate is fixed on the front surface of the output end of the electric telescopic device, a strip-shaped groove is fixed at the top of the sliding plate, the sliding plate is penetrated and slidably mounted on the front surface of the ammeter box, a clip-shaped sealing plate is fixed at the bottom of the sliding plate, a through hole plate is fixed at the back surface of the clip-shaped sealing plate, an air inlet of the cooling fan set is positioned on the movement track of a through hole of the through hole plate, the carbon dioxide spraying box is fixed at the right side of the ammeter box, a gas transmission end of the carbon dioxide spraying box is fixed with a fixing plate, the fixing plate is positioned at the top of the sliding plate, the gas transmission end of the sliding plate, the electric telescopic device is provided with an oxygen sealing plate, the bar-preventing the electric telescopic device from blocking the air inlet of the heat-spraying fan set, and preventing the air inlet from entering into the air inlet of the electric telescopic device, and preventing the air inlet from entering into the environment, and preventing the air inlet of the air-spraying box, thereby preventing the air-spraying box, carbon dioxide in the carbon dioxide spraying box is sprayed into the electric meter box, so that fire disasters are extinguished.

Preferably, be provided with dehydrating unit on the inner wall of ammeter case, dehydrating unit includes U-shaped dehumidification box and L shape baffle, the U-shaped dehumidification box has two, two the U-shaped dehumidification box is fixed respectively in the inner wall left side and the right side of ammeter case, and the U-shaped dehumidification box absorbs the moisture in the ammeter case to make keep dry state in the ammeter case, thereby avoided the moisture to ammeter main part wire corruption, caused the problem that the electric wire short circuit causes the conflagration, the L shape baffle has two, two the L shape baffle is fixed respectively on back left side and right side of returning the shape closing plate, L shape baffle and U-shaped dehumidification box keep away from one side contact of ammeter case inner wall, the opening has been seted up on the face wall of L shape baffle, the opening and the crisscross setting of U-shaped dehumidification box of L shape baffle, the shape closing plate drives L shape baffle and shelters from the dehumidizer of U-shaped dehumidification box, thereby has avoided the conflagration dehumidizer, the problem of harmful gas of production.

Preferably, the inboard of U-shaped dehumidification box is provided with circulating device, circulating device includes the U-shaped frame, U-shaped frame slidable mounting is between two U-shaped dehumidification boxes, the bottom of U-shaped frame and the pivot top contact of radiator fan group, the inner wall left side and the right side of U-shaped frame all are fixed with the T-shaped pole, the one end that U-shaped frame inner wall was kept away from to the T-shaped pole and the inside sliding connection who leads to the groove board, it articulates on the inner wall of U-shaped frame to lead to the groove board, the pivot top of radiator fan group is fixed with the lug, the bottom of U-shaped frame is located the pivot lug movement track of radiator fan group, and the pivot lug of radiator fan group drives U-shaped frame rebound through the bottom that promotes the U-shaped frame, and the U-shaped frame drives the swing of leading to the groove board through the T-shaped pole, and leads to the groove board and fans the inside air of ammeter case to the efficiency of having promoted inside moisture of ammeter case and the contact, and simultaneously when the conflagration, the logical groove board carries out the efficiency of having promoted the conflagration.

Preferably, the exhaust port has all been seted up on the top left side and the right side of ammeter case, the inside smog eduction gear that is provided with of exhaust port of ammeter case, smog eduction gear is including swing board and limiting plate, swing board has two, two swing board articulates exhaust port inner wall left side and the right side at ammeter case respectively, be equipped with the springboard between the bottom surface of swing board and the inner wall top of ammeter case, the limiting plate is fixed at the exhaust port inner wall middle part of ammeter case, the limiting plate is located the bottom of swing board, the contact of exhaust port inner wall one side bottom surface of ammeter case is kept away from to the top surface of limiting plate and swing board, along with spouting the increase of carbon dioxide in the carbon dioxide case and spouting the inside volume of ammeter case, ammeter case internal pressure increase promotes swing board upswing and opens the exhaust port of ammeter case, smog in the ammeter case passes through the exhaust port of ammeter case and discharges to avoid smog to pile up inside the ammeter case, influenced follow-up maintenance personnel and carried out the problem of maintaining, avoided smog to adhere to on the U-shaped dehumidification box simultaneously, reduced U-shaped dehumidification box life's problem.

The invention provides an intelligent electric meter with an automatic fire extinguishing function. The method has the following beneficial effects:

(1) According to the invention, through the arrangement of the automatic fire extinguishing device, the intelligent fire detection device, the electric telescopic device and the sliding plate are matched to drive the clip-shaped sealing plate and the through hole plate to respectively block a gap of an opening and closing door of the electric meter box and an air inlet of the cooling fan group, a sealed environment is formed inside the electric meter box, so that the problem of combustion-supporting fire hazard when external oxygen enters the electric meter box is avoided, and meanwhile, the sliding plate is matched with the carbon dioxide spraying box to enable carbon dioxide inside the carbon dioxide spraying box to be sprayed into the electric meter box, so that the fire hazard is extinguished.

(2) According to the invention, through the arrangement of the dehumidifying device, the U-shaped dehumidifying box absorbs moisture in the electric meter box, so that the electric meter box is kept in a dry state, and the problem of fire caused by short circuit of electric wires due to corrosion of the moisture on the main body wire of the electric meter is avoided; meanwhile, the U-shaped dehumidification box is shielded by the matching of the square-shaped sealing plate and the L-shaped baffle plate, so that the problem that harmful gas is generated due to the fact that the dehumidification box is burnt by fire is solved.

(3) According to the invention, through the arrangement of the circulating device, the heat radiation fan group, the U-shaped frame and the T-shaped rod are matched to drive the through groove plate to fan air in the electric meter box, so that the contact efficiency of moisture in the electric meter box and the U-shaped dehumidification box is promoted, and meanwhile, in case of fire, the through groove plate fans carbon dioxide in the air in the electric meter box, so that the fire extinguishing efficiency is promoted.

(4) According to the invention, through the arrangement of the smoke discharging device, the electric meter box and the carbon dioxide spraying box are matched to push the swinging plate to open the smoke outlet of the electric meter box, smoke in the electric meter box is discharged through the smoke outlet of the electric meter box, so that the problem that the smoke is accumulated in the electric meter box to influence subsequent maintenance personnel to maintain the electric meter main body is avoided, and meanwhile, the problem that the smoke is attached to the U-shaped dehumidification box to reduce the service life of the U-shaped dehumidification box is avoided.

Drawings

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

FIG. 2 is a schematic view in partial cross-section of the present invention as a whole;

FIG. 3 is a schematic view of the automatic fire extinguishing apparatus of the present invention;

FIG. 4 is a schematic partial cross-sectional view of a dehumidifying apparatus according to the present invention;

FIG. 5 is a schematic view of a circulation apparatus of the present invention;

FIG. 6 is an enlarged view of the structure at A of FIG. 5 according to the present invention;

figure 7 is a schematic view of the smoke evacuation device of the present invention.

In the figure: 1. an electric meter box; 2. an electricity meter main body; 3. an intelligent fire detection device; 4. a heat radiation fan set; 5. an automatic fire extinguishing device; 51. an electric telescopic device; 52. a slide plate; 53. a clip-shaped sealing plate; 54. a through hole plate; 55. a fixing plate; 56. a carbon dioxide spraying box; 6. a dehumidifying device; 61. a U-shaped dehumidification box; 62. an L-shaped baffle plate; 7. a fume extractor; 71. a swing plate; 72. a limiting plate; 73. a spring plate; 8. a circulation device; 81. a U-shaped frame; 82. a trough plate; 83. t-shaped rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-7, the present invention provides a technical solution: an intelligent electric meter with an automatic fire extinguishing function comprises an electric meter box 1 and an electric meter main body 2, wherein the electric meter main body 2 is fixed on the front surface of the inner wall of the electric meter box 1, an intelligent fire detection device 3 is fixed at the bottom of the electric meter main body 2, a cooling fan set 4 is fixed at the bottom of the inner wall of the electric meter main body 2, an automatic fire extinguishing device 5 is arranged at the top of the electric meter main body 2, the automatic fire extinguishing device 5 comprises an electric telescopic device 51 and a carbon dioxide spraying box 56, the electric telescopic device 51 is fixed at the top of the electric meter box 1, a sliding plate 52 is fixed on the front surface of the output end of the electric telescopic device 51, a strip-shaped groove is fixed at the top of the sliding plate 52, the sliding plate 52 penetrates through and is slidably mounted on the front surface of the electric meter box 1, a square-shaped sealing plate 53 is fixed at the bottom of the square-shaped sealing plate 53, a through hole plate 54 is fixed at the back surface of the bottom of the square-shaped sealing plate 53, and an air inlet of the cooling fan set 4 is positioned on the movement track of the through hole plate 54, the through hole plate 54 penetrates through and is slidably mounted on the front surface of the electricity meter box 1, the carbon dioxide spraying box 56 is fixed on the right side of the electricity meter box 1, a fixing plate 55 is fixed at the gas transmission end of the carbon dioxide spraying box 56, the fixing plate 55 is positioned at the top of the sliding plate 52, the gas transmission end of the carbon dioxide spraying box 56 is positioned on the movement track of the strip-shaped groove of the sliding plate 52, a control module is arranged on the back surface of the electric expansion device 51, the intelligent fire detection device 3 is connected with the control module of the electric expansion device 51 through a wire, the electric expansion device 51 pushes the sliding plate 52 to drive the clip-shaped sealing plate 53 and the through hole plate 54 to move synchronously, the clip-shaped sealing plate 53 blocks the gap of the opening and closing door of the electricity meter box 1, the through hole plate 54 blocks the air inlet of the cooling fan set 4, a sealed environment is formed inside the electricity meter box 1, thereby avoiding the problem of combustion-supporting fire when external oxygen enters the electricity meter box 1, and simultaneously the strip-shaped groove of the sliding plate 52 is communicated with the gas transmission pipe of the carbon dioxide spraying box 56, the carbon dioxide inside the carbon dioxide injection tank 56 is injected into the electricity meter case 1, thereby extinguishing the fire.

Preferably, be provided with dehydrating unit 6 on the inner wall of ammeter case 1, dehydrating unit 6 includes U-shaped dehumidification box 61 and L shape baffle 62, U-shaped dehumidification box 61 has two, two U-shaped dehumidification boxes 61 are fixed respectively in ammeter case 1's inner wall left side and right side, U-shaped dehumidification box absorbs the moisture in ammeter case 1, thereby make keep dry state in ammeter case 1, thereby moisture has been avoided corroding ammeter main part 2 wire, cause the problem that the electric wire short circuit causes the conflagration, L shape baffle 62 has two, two L shape baffles 62 are fixed respectively in the back left side and the right side of returning shape closing plate 53, L shape baffle 62 and U-shaped dehumidification box 61 keep away from one side contact of ammeter case 1 inner wall, the opening has been seted up on L shape baffle 62's the face wall, L shape baffle 62's opening sets up with U-shaped dehumidification box 61 is crisscross, returning shape closing plate 53 drives L shape baffle 62 and shelters the desiccant to U-shaped dehumidification box 61, thereby fire burning desiccant has been avoided, the problem of harmful gas is produced.

Preferably, the circulating device 8 is arranged on the inner side of each U-shaped dehumidification box 61, the circulating device 8 comprises a U-shaped frame 81, the U-shaped frames 81 are slidably mounted between the two U-shaped dehumidification boxes 61, the bottoms of the U-shaped frames 81 are in contact with the tops of the rotating shafts of the cooling fan sets 4, T-shaped rods 83 are fixed on the left sides and the right sides of the inner walls of the U-shaped frames 81, one ends, away from the inner walls of the U-shaped frames 81, of the T-shaped rods 83 are in sliding connection with the insides of the through groove plates 82, the through groove plates 82 are hinged to the inner walls of the U-shaped frames 81, bumps are fixed at the tops of the rotating shafts of the cooling fan sets 4, the bottoms of the U-shaped frames 81 are located on the moving tracks of the rotating shaft bumps of the cooling fan sets 4, the rotating shaft bumps of the cooling fan sets 4 drive the U-shaped frames 81 to move upwards by pushing the bottoms of the U-shaped frames 81, the U-shaped frames 81 drive the through groove plates 82 to swing through the T-shaped rods 83, the through groove plates 82 sector air inside the ammeter boxes 1, so that the ammeter boxes 1 are fanned when a fire disaster occurs, the ammeter box 1 has the efficiency of the carbon dioxide fanning.

Preferably, the exhaust port has all been seted up on ammeter case 1's top left side and right side, inside smog eduction gear 7 that is provided with of ammeter case 1's exhaust port, smog eduction gear 7 is including swing board 71 and limiting plate 72, swing board 71 has two, two swing boards 71 articulate respectively in ammeter case 1's exhaust port inner wall left side and right side, be equipped with springboard 73 between swing board 71's bottom surface and ammeter case 1's the inner wall top, limiting plate 72 fixes at ammeter case 1's exhaust port inner wall middle part, limiting plate 72 is located swing board 71's bottom, limiting plate 72's top surface and swing board 71 keep away from ammeter case 1's exhaust port inner wall one side bottom surface contact, along with spout the increase of carbon dioxide of the inside volume of ammeter case 1 in carbon dioxide case 56, ammeter case 1 internal pressure increase and promote swing board 71 upwards swing and open ammeter case 1's exhaust port, smog in ammeter case 1 passes through ammeter case 1's exhaust port and discharges, thereby avoided smog to ammeter case 1 inside piling up, influence follow-up maintenance personnel and carry out the problem that carries out the maintenance to ammeter main part 2, the attached to smog is 61 on the U-shaped box that dehumidifies, reduce the life-shaped box 61.

During the use, when detecting ammeter main part 2 and having the conflagration emergence in ammeter case 1 at intelligent fire detection device 3, intelligent fire detection device 3 gives the control module of electric telescopic device 51 with the signal of telecommunication transmission, electric telescopic device 51 is started, electric telescopic device 51 promotes slide 52 and removes, slide 52 drives back shape closing plate 53 synchronous motion, the gap of the opening and shutting door of ammeter case 1 is stopped up to back shape closing plate 53, through-hole board 54 follows back shape closing plate 53 and removes, the air intake of radiator fan group 4 is stopped up to through-hole board 54, the inside sealed environment that forms of ammeter case 1, thereby the problem of the combustion-supporting conflagration in external oxygen entering ammeter case 1 has been avoided, simultaneously, the bar groove of slide 52 link up with spouting carbon dioxide box 56 gas-supply pipe, spout the inside carbon dioxide of carbon dioxide box 56 and spouted into ammeter case 1, thereby the realization is put out the conflagration.

The U-shaped dehumidification box can absorb moisture in the electric meter box 1, so that the electric meter box 1 is kept in a dry state, and the problem that a fire disaster is caused by short circuit of an electric wire due to corrosion of the moisture on a lead of the electric meter main body 2 is avoided; meanwhile, the L-shaped baffle plate 62 is driven by the square-shaped sealing plate 53 to move synchronously, and the dehumidifying agent of the U-shaped dehumidifying box 61 is shielded by the L-shaped baffle plate 62, so that the problem that the dehumidifying agent is burnt by fire and harmful gas is generated is solved.

When radiator fan group 4 uses, radiator fan group 4's pivot lug drives U-shaped frame 81 rebound through the bottom that promotes U-shaped frame 81, U-shaped frame 81 drives T shape pole 83 synchronous motion, T shape pole 83 slides and drives through frid 82 swing along leading to frid 82 is inside, it fans to 1 inside air of ammeter case to lead to frid 82, thereby the efficiency of 1 inside moisture of ammeter case and the contact of U-shaped dehumidification box 61 has been promoted, simultaneously when the conflagration, it fans to lead to the carbon dioxide in 1 inside air of ammeter case to lead to frid 82, thereby the efficiency that the conflagration was put out has been promoted.

When the conflagration, ammeter case 1 is inside can produce a large amount of smog, along with spout the increase that carbon dioxide spouts ammeter case 1 internal volume in the carbon dioxide case 56, the increase of ammeter case 1 internal pressure promotes swing board 71 upswing, ammeter case 1's exhaust port is opened, smog in ammeter case 1 passes through ammeter case 1's exhaust port and discharges, thereby smog is avoided piling up ammeter case 1 is inside, influence follow-up maintenance personal and carry out the problem of maintaining to ammeter main part 2, avoided smog to attach to on U-shaped dehumidification box 61 simultaneously, reduce U-shaped dehumidification box 61 life's problem.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an intelligent ammeter with automatic function of putting out a fire, includes ammeter case (1) and ammeter main part (2), its characterized in that: the utility model discloses a fire extinguishing device, including ammeter main part (2), automatic fire extinguishing device (5), electric telescoping device (51) and spout carbon dioxide case (56), the inner wall bottom of ammeter main part (2) is fixed with radiator fan group (4), the top of ammeter main part (2) is provided with automatic fire extinguishing device (5), automatic fire extinguishing device (5) are including electric telescopic device (51) and spout carbon dioxide case (56), the top at ammeter case (1) is fixed in electric telescopic device (51), the output of electric telescopic device (51) openly is fixed with slide (52), slide (52) run through and slidable mounting in the front of ammeter case (1), the bottom of slide (52) is fixed with back shape closing plate (53), the bottom back of back shape closing plate (53) is fixed with through-hole board (54), through-hole board (54) run through and slidable mounting in the front of ammeter case (1), spout the right side at ammeter case (1) of carbon dioxide case (56), the gas transmission end that spouts carbon dioxide case (56) is fixed with through-hole board (55), slide (55) top is located the top of fixing plate (52).

2. The smart meter with the automatic fire extinguishing function according to claim 1, wherein: the top of slide (52) is fixed with the bar groove, the gas transmission end that spouts carbon dioxide case (56) is located the bar groove motion trail of slide (52), radiator fan group (4) air inlet is located the motion trail of the through-hole of through-hole board (54), the back of electronic telescoping device (51) is provided with control module, intelligent fire detection device (3) passes through electric wire connection with the control module of electronic telescoping device (51).

3. The smart meter with the function of automatically extinguishing a fire according to claim 1, wherein: be provided with dehydrating unit (6) on the inner wall of ammeter case (1), dehydrating unit (6) are including U-shaped dehumidification box (61) and L shape baffle (62), U-shaped dehumidification box (61) have two, two U-shaped dehumidification box (61) are fixed respectively on the inner wall left side and the right side of ammeter case (1), L shape baffle (62) have two, two L shape baffle (62) are fixed respectively on the back left side and the right side of returning shape closing plate (53), L shape baffle (62) and U-shaped dehumidification box (61) keep away from one side contact of ammeter case (1) inner wall.

4. The smart meter with the function of automatically extinguishing a fire according to claim 3, wherein: the face wall of the L-shaped baffle (62) is provided with a through opening, and the through opening of the L-shaped baffle (62) and the U-shaped dehumidification box (61) are arranged in a staggered mode.

5. The smart meter with the function of automatically extinguishing a fire according to claim 3, wherein: the inboard of U-shaped dehumidification box (61) is provided with circulating device (8), circulating device (8) are including U-shaped frame (81), U-shaped frame (81) slidable mounting is between two U-shaped dehumidification boxes (61), the bottom of U-shaped frame (81) and the pivot top contact of radiator fan group (4), the inner wall left side and the right side of U-shaped frame (81) all are fixed with T shape pole (83), the one end of U-shaped frame (81) inner wall and the inside sliding connection who leads to groove board (82) are kept away from in T shape pole (83), lead to groove board (82) and articulate on the inner wall of U-shaped frame (81).

6. The smart meter with the function of automatically extinguishing a fire according to claim 5, wherein: a bump is fixed at the top of the rotating shaft of the cooling fan set (4), and the bottom of the U-shaped frame (81) is positioned on the moving track of the bump of the rotating shaft of the cooling fan set (4).

7. The smart meter with the function of automatically extinguishing a fire according to claim 1, wherein: the utility model discloses a smoke and dust collecting device, including ammeter case (1), the exhaust port has all been seted up on the top left side and the right side of ammeter case (1), inside smog eduction gear (7) that is provided with of exhaust port of ammeter case (1), smog eduction gear (7) are including swing board (71) and limiting plate (72), swing board (71) have two, two swing board (71) articulate respectively in the exhaust port inner wall left side and the right side of ammeter case (1), be equipped with between the bottom surface of swing board (71) and the inner wall top of ammeter case (1) and play board (73), the exhaust port inner wall middle part in ammeter case (1) is fixed in limiting plate (72).

8. The smart meter with the function of automatically extinguishing a fire according to claim 7, wherein: the limiting plate (72) is located at the bottom of the swinging plate (71), and the top surface of the limiting plate (72) is in contact with the bottom surface of the swinging plate (71) on the side, away from the smoke exhaust port inner wall of the electric meter box (1).