CN220778895U - Electric temperature double-control miniature non-pressure-storage perfluorinated hexanone fire extinguishing device - Google Patents

Abstract

The utility model relates to the technical field of fire extinguishing devices, in particular to an electric temperature double-control miniature non-pressure-storage perfluorinated hexanone fire extinguishing device, which comprises a device shell, a gas production assembly, a spraying assembly and a fire extinguishing starting assembly, wherein the gas production assembly comprises a gas production agent storage tube, the fire extinguishing starting assembly comprises a first thermosensitive wire, a second thermosensitive wire, an electric initiator, a temperature sensor and an alarm controller, one end of the first thermosensitive wire and one end of the second thermosensitive wire extend into the gas production agent storage tube, and the other end of the first thermosensitive wire and the other end of the second thermosensitive wire extend to the outer side of the device shell; the second thermosensitive wire is connected with the electric initiator, the electric initiator is electrically connected with the alarm controller, and the temperature sensor is electrically connected with the alarm controller. The fire extinguishing device can be started by two modes of temperature sensing hot start and electric start, thereby ensuring the reliability of fire extinguishing and solving the technical problems of single starting mode and starting failure risk of the fire extinguishing device in the prior art.

Description

Electric temperature double-control miniature non-pressure-storage perfluorinated hexanone fire extinguishing device

Technical Field

The utility model relates to the technical field of fire extinguishing devices, in particular to an electric temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device.

Background

With the rapid development of national economy and the continuous improvement of public safety consciousness, fire-fighting equipment is widely used, fire-fighting facilities and fire-extinguishing devices are also arranged in a plurality of occasions, and with the damage to ozone layers caused by gas fire-extinguishing agents such as heptafluoropropane, hexafluoropropane and the like, the use of the gas fire-extinguishing agents is more and more strictly limited, and the use of the gas fire-extinguishing agents with good environmental protection performance is more and more widely performed.

In the prior art, pressure-storage type fire extinguishing apparatuses and non-pressure-storage type fire extinguishing apparatuses are classified according to whether pressure is applied in daily fire extinguishing equipment. Specifically, the pressure storage type fire extinguishing device is used for storing the fire extinguishing agent and simultaneously pressurizing in a mode of compressing nitrogen and the like, has higher requirements on the sealing performance of a container, a valve and a pipeline, and is easy to cause leakage. The non-pressure-storage type fire extinguishing device is used for storing the fire extinguishing agent at normal pressure at ordinary time, and the fire extinguishing agent is pushed to be sprayed by a hot-start or electric-start pressurizing device when the fire extinguishing is started.

At present, a plurality of non-pressure-storage fire extinguishing devices exist in the market, namely, a centralized fire extinguishing device is large in size, products with strict requirements on the internal space of a power distribution cabinet and a battery box cannot be installed in the fire extinguishing device, and when thermal runaway occurs, the thermal runaway is difficult to be effectively restrained from the inside, so that the thermal runaway can be spread. In the field of fire protection, miniature fire extinguishing devices are mostly adopted in equipment such as power distribution cabinets, communication base stations, data cabinets and the like due to space limitation. The existing miniature non-pressure storage fire extinguishing device mostly uses a single starting mode, is subjected to temperature sensing hot starting or electric starting, has a single starting mode, and has a certain starting failure risk; in addition, the temperature-sensing hot start is to start the fire extinguishing device through a thermosensitive line, and the fire extinguishing device started only by the thermosensitive line cannot control the start of the thermosensitive line.

Disclosure of Invention

The utility model aims to provide an electric temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device, which aims to solve the technical problems that the fire extinguishing device in the prior art is single in starting mode and has starting failure risk.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric temperature double-control miniature non-pressure-storage perfluorinated hexanone fire extinguishing device comprises a device shell, a gas production assembly, a spraying assembly and a fire extinguishing starting assembly, wherein the device shell is filled with fire extinguishing agent, the device shell is provided with a starting hole and a spraying hole, the gas production assembly is arranged at the starting hole, the spraying assembly is arranged at the spraying hole, the gas production assembly comprises a gas production agent storage tube and a sealing assembly, one end of the gas production agent storage tube is connected with the starting hole of the device shell by the sealing assembly, and the gas production agent storage tube is filled with a gas production agent; the fire extinguishing starting assembly comprises a first thermosensitive wire, a second thermosensitive wire, an electric initiator, a temperature sensor and an alarm controller, wherein one end of the first thermosensitive wire penetrates through the sealing assembly and stretches into the gas generating agent storage tube, and the other end of the first thermosensitive wire stretches out of the device shell; one end of the second thermosensitive wire penetrates through the sealing assembly and extends into the gas generating agent storage tube, the other end of the second thermosensitive wire extends to the outer side of the device shell and is connected with the electric initiator, the electric initiator is electrically connected with the alarm controller, and the temperature sensor is electrically connected with the alarm controller.

Based on the technical scheme, the utility model can also be improved as follows:

further, the electric initiator is fixedly connected with the second thermosensitive wire through an external winding binding adhesive tape, and the electric initiator is electrically connected with the alarm controller through an electric wire or is connected in a wireless mode.

Further, one end of the gas generating agent storage tube is opened, the other end of the gas generating agent storage tube is closed, and the sealing assembly is connected with the opening end of the gas generating agent storage tube.

Further, the open end of the gas generating agent storage tube is provided with an inner ignition powder, an outer combustion expanding powder and a combustion-supporting adhesive film, the inner ignition powder is wrapped at one ends of the first thermosensitive wire and the second thermosensitive wire, the outer combustion expanding powder is wrapped outside the inner ignition powder, and the inner ignition powder and the outer combustion expanding powder are filled in the combustion-supporting adhesive film in a sealing mode.

Further, the sealing assembly comprises a nut, a screw plug in threaded connection with the nut and a sealing gasket arranged between the nut and the screw plug, a through hole for the first thermosensitive wire and the second thermosensitive wire to pass through is formed in the center of the screw plug, one end of the nut protrudes outwards to form a fixing part, threads are arranged on the outer wall of the fixing part, the nut is in threaded connection with the starting hole through the fixing part, the opening end of the gas generating agent storage tube protrudes outwards to form an annular fixing flange, the gas generating agent storage tube penetrates through the through hole and the starting hole of the nut and stretches into the device shell, and the fixing flange is clamped between the inner wall of the nut and the sealing gasket.

Further, the sealing gasket is provided with two sealing holes, and the first thermosensitive wire and the second thermosensitive wire correspondingly penetrate through the two sealing holes of the sealing gasket and are in tight fit with the sealing holes.

Further, the injection assembly comprises an injection screw plug, a piercing piece and an injection nut, wherein the injection nut is in threaded connection with the injection hole of the device shell, the piercing piece is arranged between the injection screw plug and the injection nut, the piercing piece is an aluminum foil piece, the injection nut is in threaded connection with the injection screw plug, a through hole is formed in the center of the injection screw plug, and a sealing ring is arranged between the piercing piece and the injection nut.

Further, the device shell is flat and rectangular, and is made of steel; the gas generating agent storage tube is made of nonmetal materials and separates the gas generating agent from the fire extinguishing agent.

The beneficial effects of the utility model are as follows: according to the fire extinguishing device, as the fire extinguishing starting assembly comprises the first thermosensitive wire, the second thermosensitive wire, the electric initiator connected with the second thermosensitive wire, the temperature sensor and the alarm controller, the fire extinguishing device can be started by two modes of temperature sensing warm starting and electric starting, the reliability of fire extinguishing is ensured, and the technical problems that the starting mode of the fire extinguishing device in the prior art is single and the starting failure risk exists are solved. In addition, the second thermosensitive wire is connected with the electric initiator, the temperature sensor and the alarm controller, so that the starting of the second thermosensitive wire can be controlled.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of an electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device provided by the preferred embodiment of the utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a cross-sectional view of the gasket of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 1;

in the figure: 1. a device housing; 10. fire extinguishing agent; 11. a start hole; 12. a discharge hole; 22. a gas generating agent storage tube; 220. a gas generating agent; 221. a fixing flange; 222. an inner layer ignition charge; 223. an outer layer of the expanding combustion agent; 224. a combustion-supporting adhesive film; 231. a nut; 232. a screw plug; 233. a sealing gasket; 234. a fixing part; 235. sealing the hole; 31. injecting a screw plug; 32. puncturing the sheet; 33. a spray nut; 34. a seal ring; 41. a first thermosensitive wire; 42. a second thermosensitive wire; 43. an electric initiator; 44. a temperature sensor; 45. and an alarm controller.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

As shown in fig. 1 to 4, an electric temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device provided by a preferred embodiment of the utility model comprises a device shell 1, a gas generating component, a spraying component and a fire extinguishing starting component.

The device shell 1 is used for filling and sealing the fire extinguishing agent 10 in the miniature non-pressure-storage perfluorinated hexanone fire extinguishing device, the fire extinguishing agent 10 adopts perfluorinated hexanone, compared with fire extinguishing media such as hexafluoropropane, aerosol and the like, the perfluorinated hexanone agent has lower fire extinguishing concentration, higher fire extinguishing efficiency, high safety coefficient, no electric conduction and no residue, and the perfluorinated hexanone agent is used with the severe limit on the damage of ozone layers caused by the gas fire extinguishing agents such as heptafluoropropane, hexafluoropropane and the like, and the perfluorinated hexanone is used for the fire extinguishing agent, and has the outstanding characteristics of excellent environmental protection performance, ozone depletion potential value (ODP) of 0 and global warming potential value (GWP) of 1, so the perfluorinated hexanone with excellent environmental protection performance is used more and more widely as the fire extinguishing agent. The device shell 1 is flat rectangle, and starting hole 11 and blowout hole 12 have been seted up to device shell 1 one end, and the gas production subassembly is installed to starting hole 11 department, and the blowout hole 12 department installs the injection subassembly. The material of device shell 1 is steel, and the fusing point of steel is very high to can prevent that device shell 1 from being burnt out in the in-process of putting out a fire the start-up.

The gas generating component is used for starting the miniature non-pressure-storage perfluorinated hexanone fire extinguishing device, the gas generating component comprises a gas generating agent storage tube 22 and a sealing component, the gas generating agent storage tube 22 is made of nonmetal materials, separation of the gas generating agent 220 and the fire extinguishing agent 10 is achieved, one end of the gas generating agent storage tube 22 is open, the other end of the gas generating agent storage tube is closed, the sealing component is connected and fixed to a starting hole 11 of the device shell 1 and is connected with the open end of the gas generating agent storage tube 22, the gas generating agent storage tube 22 is filled with the gas generating agent 220, the gas generating agent 220 is used for generating a large amount of gas to form high pressure, and the fire extinguishing agent 10 is caused to be sprayed out of the device shell 1 for fire extinguishing.

The injection assembly is used for spraying fire extinguishing agent 10 in the miniature non-pressure-storage perfluorinated hexanone fire extinguishing device, the injection assembly comprises an injection screw plug 31, a piercing piece 32 and an injection nut 33, the injection nut 33 is in threaded connection with the injection hole 12 of the device shell 1, the piercing piece 32 is arranged between the injection screw plug 31 and the injection nut 33, the piercing piece 32 is an aluminum foil, the injection nut 33 is in threaded connection with the injection screw plug 31, a through hole is arranged in the center of the injection screw plug 31, a sealing ring 34 is arranged between the piercing piece 32 and the injection nut 33, the sealing performance of the injection assembly is ensured due to the addition of the sealing ring 34, and the pressure maintaining performance inside the device shell 1 before the injection of the injection assembly is ensured.

The fire extinguishing starting assembly comprises a first heat sensitive wire 41, a second heat sensitive wire 42, an electric initiator 43, a temperature sensor 44 and an alarm controller 45, wherein the alarm controller 45 comprises a single chip microcomputer. The first thermosensitive wire 41 and the second thermosensitive wire 42 are made of temperature-sensing spontaneous combustion materials, and when the temperature of a protected area reaches the starting temperature of the first thermosensitive wire 41 and the second thermosensitive wire 42, the first thermosensitive wire 41 and the second thermosensitive wire 42 are spontaneous-heated, and a fire extinguishing device connected with the first thermosensitive wire 41 and the second thermosensitive wire 42 is driven to be started, so that non-electric starting fire extinguishing is realized; in this embodiment, the hot start temperature of the first and second thermosensitive wires 41 and 42 is 170±10 ℃; one end of the first heat sensitive wire 41 penetrates the sealing assembly and extends into the gas generating agent storage tube 22 for igniting the gas generating agent 220 therein; the other end extends outside the device housing 1 for responding to the temperature of the protected area.

One end of the second heat sensitive wire 42 extends through the seal assembly and into the gas generant storage tube 22 for igniting the gas generant 220 therein; the other end extends to the outside of the device housing 1 and is connected with the electric initiator 43, so that the electric initiator 43 heats up, and the second thermosensitive wire 42 connected with the electric initiator 43 senses heat for ignition, thereby starting the fire extinguishing device to extinguish fire. Specifically, the electric initiator 43 and the second thermosensitive wire 42 are fixedly connected together by an externally wound binding tape. The electric initiator 43 and the alarm controller 45 are electrically connected through wires or are connected in a wireless mode, and the singlechip of the alarm controller 45 sends out a control signal to the electric initiator 43, so that the electric initiator 43 generates heat to ignite the second thermosensitive wire 42 after receiving the control signal of the alarm controller 45 electrically connected with the electric initiator, and then the fire extinguishing device is started to spray the fire extinguishing agent 10 to extinguish fire.

The temperature sensor 44 is electrically connected with the alarm controller 45 and is used for detecting the temperature of a protected area in real time, when the temperature sensor 44 detects that the temperature of the protected area is higher than a set temperature, a detection signal is sent to the alarm controller 45, the alarm controller 45 sends a control signal to the electric initiator 43, the electric initiator 43 ignites the second thermosensitive wire 42 through heating to start the fire extinguishing device, electric starting is achieved, and the fire extinguishing device can be started electrically through the temperature sensor 44, the alarm controller 45 and the electric initiator 43 when the first thermosensitive wire 41 has a starting fault, so that the aim of extinguishing fire is achieved.

Preferably, the opening end of the gas generating agent storage tube 22 is provided with an inner layer ignition powder 222, an outer layer expansion powder 223 and a combustion-supporting adhesive film 224, the inner layer ignition powder 222 is wrapped at one end of the first thermosensitive wire 41 and one end of the second thermosensitive wire 42, the outer layer expansion powder 223 is wrapped outside the inner layer ignition powder 222, the inner layer ignition powder 222 and the outer layer expansion powder 223 are sealed and filled in the combustion-supporting adhesive film 224, and the combustion-supporting adhesive film 224 is of a three-layer paint film sealing structure and has waterproof and oil-proof functions; the first thermosensitive wire 41 or the second thermosensitive wire 42 is ignited to excite the inner layer ignition powder 222 to form chemical energy, the outer layer expansion powder 223 is rapidly expanded and ignited in a deflagration mode, a large amount of high-temperature gas is generated after the inner layer ignition powder 222 and the outer layer expansion powder 223 are combusted, the high-temperature gas breaks through the combustion-supporting adhesive film 224 and ignites the gas generating agent 220, the gas generating agent 220 is rapidly combusted to generate a large amount of high-pressure gas, and the fire extinguishing agent 10 in the device shell 1 is sprayed out to realize rapid fire extinguishing.

Preferably, the gas generating agent storage tube 22 is sleeved with a protective sleeve, the protective sleeve wraps the outer wall of the gas generating agent storage tube 22, the protective sleeve further isolates the fire extinguishing agent 10 from the gas generating agent 220, the gas generating agent storage tube 22 and the protective sleeve are made of non-metal materials, and the gas generating agent storage tube 22 and the protective sleeve are damaged under the action of high-pressure gas formed by the gas generating agent 220.

Specifically, the sealing assembly includes a nut 231, a plug screw 232 screwed with the nut 231, and a sealing gasket 233 disposed between the nut 231 and the plug screw 232, where the number of sealing gaskets 233 may be one, or a plurality of sealing gaskets 233 may be stacked, so as to have a better sealing effect; the screw plug 232 is screwed with the nut 231, and a through hole through which the first thermosensitive wire 41 and the second thermosensitive wire 42 pass is provided in the center of the screw plug 232. Specifically, the starting hole 11 is a threaded hole, one end of the nut 231 protrudes outwards to form a fixing portion 234, the outer wall of the fixing portion 234 is provided with threads, and the nut 231 is screwed to the starting hole 11 through the fixing portion 234. The open end of the gas generating agent storage tube 22 protrudes outwards to form an annular fixing flange 221, the gas generating agent storage tube 22 penetrates through the through hole of the nut 231 and the starting hole 11 and extends into the device shell 1, the fixing flange 221 is clamped between the inner wall of the nut 231 and the sealing pad 233, the sealing pad 233 is provided with two sealing holes 235, the first thermosensitive wire 41 and the second thermosensitive wire 42 correspondingly penetrate through the two sealing holes 235 of the sealing pad 233 and are in tight fit with the sealing holes 235, and accordingly the first thermosensitive wire 41 and the second thermosensitive wire 42 are in sealing connection with the sealing pad 233.

The fire extinguishing device is suitable for fire suppression in the closed space of equipment with high space size requirements such as a power distribution cabinet, a communication base station, a data cabinet, an energy storage power station, a battery box and the like, and in the embodiment, the fire extinguishing device is applied to the power distribution cabinet as an example, and the working principle of the fire extinguishing device is described.

When the electric temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is used, the electric temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is arranged in a power distribution cabinet, when a fire occurs, once the temperature in the power distribution cabinet exceeds the self-ignition point of a first thermosensitive wire 41, the first thermosensitive wire 41 is spontaneously ignited to ignite a gas generating agent 220, a large amount of gas is generated by the gas generating agent 220, the gas generating agent 22 is broken through by pressure required by gas formation eruption, the fire extinguishing agent 10 in the device shell 1 is pressurized, and then the fire extinguishing agent 10 in the device shell 1 breaks through a piercing piece 32 of a spraying component and is sprayed out from a spraying hole 12, the inside of the power distribution cabinet is submerged, and the inside of the power distribution cabinet is extinguished. In addition, the temperature sensor 44 is used for monitoring the internal temperature of the power distribution cabinet, when the temperature sensor 44 detects that the temperature of a protected area (power distribution cabinet) is higher than a set temperature, a detection signal is sent to the alarm controller 45, the alarm controller 45 sends a control signal to the electric initiator 43, and the electric initiator 43 initiates the second thermosensitive wire 42 to start the fire extinguishing device through heating, so that electric starting is realized; the fire extinguishing device can be electrically started through the temperature sensor 44, the alarm controller 45 and the electric initiator 43 when the first thermosensitive wire 41 fails to start, so as to achieve the aim of extinguishing fire.

According to the fire extinguishing device, as the fire extinguishing starting assembly comprises the first thermosensitive wire 41, the second thermosensitive wire 42, the electric initiator 43 connected with the second thermosensitive wire 42, the temperature sensor 44 and the alarm controller 45, the fire extinguishing device can be started in a temperature sensing hot start mode and an electric start mode, the reliability of fire extinguishing is ensured, and the technical problems that the fire extinguishing device in the prior art is single in starting mode and has a starting failure risk are solved. In addition, the second thermosensitive wire 42 is connected to an electric initiator 43, a temperature sensor 44 and an alarm controller 45, so that activation of the second thermosensitive wire 42 can be controlled.

The above description of the embodiments of the present utility model, which is not related to the present utility model, belongs to the technology known in the art, and may be implemented with reference to the technology known in the art.

The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (8)

1. The utility model provides a miniature non-pressure storage perfluorinated hexanone extinguishing device of electric temperature double control, includes device shell, produces gas subassembly, sprays the subassembly and puts out a fire starting assembly, fills in the device shell and fills fire extinguishing agent, and starting hole and blowout hole have been seted up to the device shell, and gas subassembly is installed to starting hole department, and spraying subassembly, its characterized in that are installed to blowout hole department: the gas generating assembly comprises a gas generating agent storage tube and a sealing assembly, wherein one end of the gas generating agent storage tube is connected with a starting hole of the device shell by the sealing assembly, and the gas generating agent storage tube is filled with a gas generating agent; the fire extinguishing starting assembly comprises a first thermosensitive wire, a second thermosensitive wire, an electric initiator, a temperature sensor and an alarm controller, wherein one end of the first thermosensitive wire penetrates through the sealing assembly and stretches into the gas generating agent storage tube, and the other end of the first thermosensitive wire stretches out of the device shell; one end of the second thermosensitive wire penetrates through the sealing assembly and extends into the gas generating agent storage tube, the other end of the second thermosensitive wire extends to the outer side of the device shell and is connected with the electric initiator, the electric initiator is electrically connected with the alarm controller, and the temperature sensor is electrically connected with the alarm controller.

2. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 1, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the electric initiator is fixedly connected with the second thermosensitive wire through an external winding binding adhesive tape, and the electric initiator is electrically connected with the alarm controller through wires or is connected in a wireless mode.

3. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 1, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: and one end of the gas generating agent storage tube is opened, the other end of the gas generating agent storage tube is closed, and the sealing assembly is connected with the opening end of the gas generating agent storage tube.

4. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 3, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the open end of the gas generating agent storage tube is provided with an inner ignition powder, an outer combustion expanding powder and a combustion-supporting adhesive film, the inner ignition powder is wrapped at one ends of the first thermosensitive wire and the second thermosensitive wire, the outer combustion expanding powder is wrapped outside the inner ignition powder, and the inner ignition powder and the outer combustion expanding powder are filled in the combustion-supporting adhesive film in a sealing mode.

5. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 3, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the sealing assembly comprises a nut, a screw plug in threaded connection with the nut and a sealing gasket arranged between the nut and the screw plug, a through hole for the first thermosensitive wire and the second thermosensitive wire to pass through is formed in the center of the screw plug, one end of the nut protrudes outwards to form a fixing part, threads are arranged on the outer wall of the fixing part, the nut is in threaded connection with a starting hole through the fixing part, the opening end of the gas generating agent storage tube protrudes outwards to form an annular fixing flange, the gas generating agent storage tube penetrates through the through hole and the starting hole of the nut and stretches into the device shell, and the fixing flange is clamped between the inner wall of the nut and the sealing gasket.

6. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 5, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the sealing gasket is provided with two sealing holes, and the first thermosensitive wire and the second thermosensitive wire correspondingly penetrate through the two sealing holes of the sealing gasket and are in tight fit with the sealing holes.

7. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 1, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the injection assembly comprises an injection screw plug, a piercing piece and an injection nut, wherein the injection nut is in threaded connection with the injection hole of the device shell, the piercing piece is arranged between the injection screw plug and the injection nut, the piercing piece is an aluminum foil piece, the injection nut is in threaded connection with the injection screw plug, a through hole is formed in the center of the injection screw plug, and a sealing ring is arranged between the piercing piece and the injection nut.

8. The electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device according to claim 1, wherein the electrical temperature double-control miniature non-pressure storage perfluorinated hexanone fire extinguishing device is characterized in that: the device shell is flat and rectangular, and is made of steel; the gas generating agent storage tube is made of nonmetal materials and separates the gas generating agent from the fire extinguishing agent.