CN216169604U

CN216169604U - Thermosensitive wire safety protection structure, thermosensitive wire assembly and fire extinguishing device

Info

Publication number: CN216169604U
Application number: CN202121985770.8U
Authority: CN
Inventors: 王祺; 张俊峰; 李先军
Original assignee: Hubei Jiandun Fire Technology Co Ltd
Current assignee: Hubei Jiandun Fire Technology Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-04-05
Anticipated expiration: 2031-08-23

Abstract

The utility model relates to a thermosensitive wire safety protection structure, a thermosensitive wire assembly and a fire extinguishing device, wherein the thermosensitive wire safety protection structure comprises a fire retarding shell, a connecting port, an exhaust port and a flame extinguishing channel communicated with the connecting port and the exhaust port, the connecting port is used for being matched and connected with one end of a thermosensitive wire, and the exhaust port is communicated with the outside of the fire retarding shell; and the flame-extinguishing structure is arranged in the flame-extinguishing channel and is used for extinguishing flame in the flame-extinguishing channel. According to the heat-sensitive wire safety protection structure, the heat-sensitive wire assembly and the fire extinguishing device, when the heat-sensitive wire is ignited, flame meets the flame arresting structure in the fire retarding channel, and the flame arresting structure can eliminate the flame in the flame channel, so that the use safety of the heat-sensitive wire in a combustible gas environment is improved.

Description

Thermosensitive wire safety protection structure, thermosensitive wire assembly and fire extinguishing device

Technical Field

The utility model relates to the technical field of fire fighting, in particular to a thermosensitive wire safety protection structure, a thermosensitive wire assembly and a fire extinguishing device.

Background

The thermosensitive wire is mainly used in cooperation with fire-fighting equipment, when the environmental temperature reaches the thermosensitive wire starting temperature, or the thermosensitive wire is ignited in an open fire, the thermosensitive wire safety protection structure can be started to put out a fire, and the thermosensitive wire is widely applied to automatic fire extinguishment in various places.

The thermosensitive wire at the present stage consists of a thermosensitive wire core and a fireproof sleeve. The fire-proof sleeve is coated outside the heat-sensitive wire core, and when the heat-sensitive wire core is ignited, the fire-proof sleeve can burn inside the fire-proof sleeve, and the burning sparks and high temperature of the fire-proof sleeve cannot affect other articles in the environment.

However, when the heat-sensitive wire is used for a fire extinguishing device in a scene with combustible gas, the fire extinguishing device has the huge hidden danger of igniting and detonating the combustible gas, and the safety of surrounding life and property is seriously threatened.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a heat-sensitive wire safety protection structure, a heat-sensitive wire assembly and a fire extinguishing apparatus, which can prevent sparks of a heat-sensitive core from igniting and detonating the combustible gas in a combustible gas use scene, in order to solve the problem of the huge hidden danger of igniting and detonating the combustible gas when the existing heat-sensitive wire is used in the fire extinguishing apparatus having the combustible gas use scene.

In one aspect of the present application, there is provided a heat-sensitive wire safety protection structure, including:

the flame-retardant shell is provided with a connecting port, an exhaust port and a flame-quenching channel for communicating the connecting port with the exhaust port, the connecting port is used for being matched and connected with one end of the thermosensitive wire, and the exhaust port is communicated with the outside of the flame-retardant shell; and

and the flame-extinguishing structure is arranged in the flame-extinguishing channel and is used for extinguishing flame in the flame-extinguishing channel.

In one embodiment, the flame trap structure comprises a temperature reducing flame trap structure capable of reducing the temperature of the flame to eliminate the flame.

In one embodiment, the temperature-reducing flame-suppressing structure comprises a metal heat sink.

In one embodiment, the temperature reducing flame arresting structure comprises a metal mesh.

In one embodiment, the metal mesh is formed by weaving a plurality of metal wires; or

The metal mesh is formed by metal piece openings.

In one embodiment, the metal mesh is in the shape of a column or a sheet.

In one embodiment, when the metal mesh is sheet-shaped, the metal mesh comprises a plurality of metal meshes, and the plurality of metal meshes are arranged at intervals along the extending direction of the flame-extinguishing passage.

In one embodiment, the flame trap structure comprises a power consuming flame trap structure capable of reducing radical reactions forming a flame to extinguish the flame.

In one embodiment, the energy consumption flame-extinguishing structure is provided with a plurality of collision surfaces intersecting with the extension direction of the flame-extinguishing channel, and the collision surfaces are arranged at intervals along the extension direction of the flame-extinguishing channel.

In one embodiment, the flame holding structure is fixed in the flame holding channel.

In one embodiment, the heat-sensitive wire safety protection structure further comprises a breathable film, and the breathable film is arranged at the air outlet in a covering mode.

On the other hand, the application also provides a thermosensitive wire assembly, which comprises a thermosensitive wire and the thermosensitive wire safety protection structure, wherein one end of the thermosensitive wire is connected to the connecting port in a matching mode.

In one embodiment, the heat-sensitive wire comprises a fireproof sleeve and a heat-sensitive wire core wrapped in the fireproof sleeve, the fire-retardant shell is provided with a connecting end, the connecting end is arranged at the connecting end, and one end, facing the heat-sensitive wire safety protection structure, of the fireproof sleeve is connected with the connecting end in an interference fit mode; and/or

One end of the fireproof sleeve facing the thermosensitive wire safety protection structure is bonded with the connecting end; and/or

The fire-fighting device comprises a fire-fighting sleeve, a connecting end, a temperature-sensitive wire safety protection structure and a fire protection sleeve, wherein the fire-fighting sleeve is arranged at the connecting end and faces one end of the temperature-sensitive wire safety protection structure, and the fire-fighting sleeve further comprises a locking piece which is matched with the outside of the fire-fighting sleeve to provide locking force for the fire-fighting sleeve to cling to the connecting end.

In one embodiment, when one end of the fireproof sleeve facing the thermosensitive wire safety protection structure is sleeved at the connecting end, the thermosensitive wire assembly further comprises a locking piece, and the locking piece is matched with the outer part of the fireproof sleeve to provide a locking force for the fireproof sleeve to cling to the connecting end;

wherein, be equipped with first joint portion on the back-fire relief shell, be equipped with on the retaining member with the second joint portion of first joint looks joint.

In another aspect of the application, a fire extinguishing apparatus is further provided, which includes an apparatus body and the above mentioned heat-sensitive wire assembly, wherein one end of the heat-sensitive wire far away from the connection port is connected to the apparatus body.

Above-mentioned temperature sensing line safety protection structure, temperature sensing line subassembly and extinguishing device, one end through showing the temperature sensing line core links to each other with temperature sensing line safety protection structure, be ignited when the temperature sensing line core, and towards temperature sensing line safety protection structure's one side burning to the tip after, flame will get into in the back-fire relief passageway through the connector, and then can be set up and meet by the flame arresting structure in the back-fire relief passageway, and the flame arresting structure can be eliminated flame in the flame path, and then prevented flame from the gas vent discharge and with the external environment in the combustible gas contact, perhaps prevent from the gas vent get into the flame path in with the further burning of flame from the temperature sensing line core, the event has improved the security that the temperature sensing line used under the combustible gas environment.

In addition, because the fire-retardant shell is provided with the exhaust port, so, after the heat-sensitive sinle silk is ignited, the gas in the fire-retardant sleeve is heated and expanded, and the gas can be guided to the exhaust port to be discharged by the arrangement of the exhaust port, so that the heat-sensitive wire cannot be exploded.

Drawings

FIG. 1 is a schematic view of a fire suppression apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a heat-sensitive wire safety protection structure according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a heat-sensitive wire safety protection structure according to another embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

In order to facilitate understanding of the technical solution of the present invention, prior to the detailed description, the conventional heat-sensitive wire will be described first.

As background art says, the heat-sensitive wire usually comprises heat-sensitive sinle silk and fire prevention cover, and the one end of heat-sensitive wire is located the external portion of extinguishing device body for respond to external environment temperature, and the other end of heat-sensitive wire links to each other with the extinguishing device body for ignite gas production agent or fire extinguishing agent etc. in it to start extinguishing device body and spout extinguishing substance and put out a fire.

And the fire prevention cover both ends usually have the opening in order to show the heat-sensitive sinle silk, show that this internal heat-sensitive sinle silk of extinguishing device can ignite gas production agent or fire extinguishing agent etc. and deviate from the one end opening of extinguishing device body, can regard the gas vent to release because of the heat production in the heat-sensitive sinle silk combustion process causes the pressure of the gas inflation in the fire prevention cover, consequently, can avoid the heat-sensitive line to explode and split and influence the function of the start-up extinguishing device body of heat-sensitive line.

So when extinguishing device was arranged in having combustible gas's scene, can have combustible gas to get into in the fire jacket from the opening, perhaps the condition that the star that the heat-sensitive sinle silk burnt got into external environment from the opening, so, can make combustible gas be ignited, the huge hidden danger that explodes even threatens the personal property safety all around seriously.

Therefore, it is necessary to provide a heat-sensitive wire safety protection structure, a heat-sensitive wire assembly and a fire extinguishing device capable of preventing sparks of the heat-sensitive core from igniting and igniting combustible gas in a combustible gas use scene.

FIG. 1 shows a schematic view of a fire suppression apparatus in an embodiment of the present invention; fig. 2 shows a cross-sectional structural schematic view of the heat-sensitive wire safety guard structure of fig. 1. For the purpose of illustration, the drawings show only the structures associated with embodiments of the utility model.

Referring to the drawings, an embodiment of the present invention provides a heat-sensitive wire safety shield structure 100 comprising a fire retardant housing 10 and a flame arresting structure 20. The heat-sensitive wire safety protection structure 100 of the present application is applied to the heat-sensitive wire 210.

It is understood that the heat-sensitive wire 210 includes a fire-proof sheath 211 and a heat-sensitive wire core 212 enclosed therein, and the heat-sensitive wire core 212 can be ignited in the fire-proof sheath 211 in response to the external ambient temperature. Further, the fire-proof sheath 211 has openings at both ends thereof to expose the heat-sensitive wire core 212.

The fire retardant shell 10 is provided with a connecting port 11, an exhaust port 12 and a flame-quenching channel 13 for communicating the connecting port 11 with the exhaust port 12, the connecting port 11 is used for being matched and connected with one end of the thermosensitive wire 210, and the exhaust port 12 is communicated with the outside of the fire retardant shell 10. Specifically, the fire retardant housing 10 is made of a fire retardant material, specifically, may be made of a metal material, and in other embodiments, may be coated with a fire retardant coating. In the embodiment of the present application, the connection port 11 and the exhaust port 12 are opened on the two opposite end surfaces of the fire retardant housing 10, but in other embodiments, only the connection port 12 may be provided on the end surface, and the exhaust port 12 may be provided on the non-end surface, which is not limited herein. The connecting port 11 is arranged on the end face, so that the heat-sensitive wire 210 is conveniently matched and connected with the connecting port 11.

It will be appreciated that connection port 11 interfaces with the opening of fire-blocking sleeve 211.

A flame trap 20 is provided in the flame trap channel 13 for trapping flames in the flame trap channel 13.

So, through revealing the one end of heat-sensitive line core 212 with heat-sensitive line 210 and linking to each other with heat-sensitive line safety protection structure 100, when heat-sensitive line core 212 is ignited, and after one side burning to the tip towards heat-sensitive line safety protection structure 100, flame will get into in back-fire relief passageway 13 through connector 11, and then can be set up the flame arresting structure 20 in back-fire relief passageway 13 and meet, and flame arresting structure 20 can eliminate flame in flame passageway 13, and then prevented flame from exhausting from gas vent 12 and contacted with the combustible gas in the external environment, or prevented from getting into flame passageway 13 from gas vent 12 in with the further burning of flame that comes from heat-sensitive line core 212, so the security that heat-sensitive line 210 uses under the combustible gas environment has been improved.

In addition, because the fire retardant shell 10 is provided with the air outlet 12, after the heat-sensitive wire core 212 is ignited, the air in the fire retardant sleeve 211 is heated and expanded, and the air outlet 12 can guide the air to be discharged to the air outlet 12 without exploding the heat-sensitive wire 210.

Referring again to fig. 2, in particular to the embodiment of the present application, the flame trap structure 20 includes a cool-down flame trap structure capable of reducing the temperature of smoke and fire to eliminate flames.

It will be appreciated by those skilled in the art that one of the requirements for combustion is to reach a certain temperature, i.e. the ignition point. Below the ignition point, combustion naturally stops. According to this principle, the inventors have studied and found that the spread of the flame can be prevented and the flame can be extinguished by lowering the temperature of the flame so that the flame does not reach the ignition point of the combustible gas.

Further, the cooling flame structure comprises a metal heat sink. The metal has good heat conduction effect, so that the temperature of flame concentration can be conducted through the metal heat dissipation part, the heat dissipation area is enlarged, and the cooling effect is accelerated.

In particular, in one embodiment, the metal heat sink comprises a metal mesh. Due to the existence of the grid, after the flame passes through a plurality of fine channels of the metal grid piece, the flame becomes a plurality of fine flames, so that the heat conduction is enhanced, the temperature of the flame can be rapidly reduced below the ignition point, the flame is prevented from spreading, and the flame is eliminated. Specifically, the metal mesh member may be formed by braiding metal wires or by forming openings in the metal member, without limitation. But the metal mesh piece formed by weaving the metal wires has finer meshes and better flame-extinguishing effect.

As shown in fig. 2, more specifically, the metal mesh may have a cylindrical shape. Therefore, the structure of the flame-extinguishing can be more compact in the narrow flame-extinguishing passage 13, and the flame can continuously pass through countless metal grids, thereby improving the flame-extinguishing effect.

In other embodiments, the metal mesh may be sheet-like, as shown in fig. 3. The sheet metal grid part has simple structure and low cost. Further, the sheet-shaped metal mesh may include a plurality of sheet-shaped metal mesh, and the plurality of sheet-shaped metal mesh may be spaced apart from each other in the extending direction of the flame trap passage 13. Therefore, the flame can pass through the metal grid for many times, and the flame-extinguishing effect is improved. It should also be noted that the number of meshes, mesh size or mesh position of each metal mesh piece may be varied to ensure that the flame is refined.

In other embodiments of the present application, the flame trap 20 includes a power consuming flame trap that reduces free radical reactions that form the flame to extinguish the flame.

The inventor researches and discovers that the combustion and the explosion do not directly react with each other, but are excited by external energy, so that molecular bonds are destroyed, and then activated molecules are generated, and the activated molecules are split into short-lived but very active free radicals, and the free radicals collide with other molecules to generate new products, and simultaneously generate new free radicals to continue to react with other molecules. Thus, reducing the free radical reactions that form the flame also eliminates the flame.

Further, the energy consuming flame trap structure has a plurality of collision surfaces intersecting the extending direction of the flame trap channel 13, and the plurality of collision surfaces are arranged at intervals along the extending direction of the flame trap channel 13. Thus, when the combustible gas enters the flame-quenching channel 13, the free radicals collide with a plurality of collision surfaces to occupy a dominant position, so that the number of the free radicals participating in the reaction is greatly reduced, the reaction cannot be continued, that is, the combustion reaction cannot be continuously propagated through the heat-sensitive wire safety protection structure 100, and the flame-quenching effect is further achieved.

In some embodiments, in order to ensure that the flame holding structure 20 can stably achieve the flame holding effect, the flame holding structure 20 is fixed in the flame holding channel 13. Of course, in some embodiments, the flame trap structure 20 may also be movably disposed within the flame trap channel 13.

In some embodiments, in order to prevent excessive external combustible gas from entering the flame-extinguishing passage 13 or the flame from being discharged to the external environment, the heat-sensitive wire safety protection structure 100 further includes a gas-permeable film disposed at the exhaust port 12.

Referring to fig. 1 again, based on the same inventive concept, the present application further provides a thermal wire assembly 200, where the thermal wire assembly 200 includes a thermal wire 210 and the above-mentioned thermal wire safety protection structure 100, and one end of the thermal wire 210 is connected to the connection port 11 in a matching manner.

In particular, the fire retardant housing 10 has a connection end at which a connection port 11 is provided. One end of the fireproof sleeve 211 facing the temperature-sensitive wire safety protection structure 100 is connected with the connecting end in an interference fit manner. Specifically, the fireproof sleeve 211 may be sleeved at the connection end, or may be connected to the connection port 11 in an interference fit manner.

In other embodiments, the fire-resistant covering 211 may also be bonded to the attachment end. Of course, in other embodiments, the connection may be further fixed by an adhesive after the interference fit connection.

In still other embodiments, the fire-proof sheath 211 is sleeved at the connecting end towards one end of the heat-sensitive wire safety protection structure 100, and the heat-sensitive wire assembly 200 further comprises a locking member which is matched with the outside of the fire-proof sheath 211 to provide a locking force for the fire-proof sheath to cling to the connecting end.

Further, the link still is equipped with first joint portion, and the retaining member is equipped with the second joint portion of the looks joint with first joint. Specifically, one of the first clamping portion and the second clamping portion is a buckle, and the other of the first clamping portion and the second clamping portion is a clamping groove clamped with the buckle. In some preferred embodiments, the first clamping part is arranged on one side surface of the connecting end facing the locking part, and the second clamping part is arranged on one side surface of the locking part facing the connecting end, so that the clamping operation of the first clamping part and the second clamping part is simple.

In another embodiment, the locking member may also be a slip ring locking member, and in other embodiments, the connecting end is provided with an externally threaded portion, and the locking member is a nut threadably engaged with the externally threaded portion. The connection modes are simple in structure and reliable in connection.

Referring to fig. 1 again, based on the same inventive concept, the present application further provides a fire extinguishing apparatus 300, which includes an apparatus body 310 and the above-mentioned heat-sensitive wire assembly 200, wherein an end of the heat-sensitive wire 210 away from the connection port 11 is connected to the apparatus body 310.

Compared with the prior art, the thermosensitive wire safety protection structure 100, the thermosensitive wire assembly 200 and the fire extinguishing device 300 provided by the embodiment of the utility model have the following beneficial effects:

through revealing the one end of heat-sensitive sinle silk 212 with heat-sensitive sinle silk 210 and linking to each other with heat-sensitive line safety protection structure 100, when heat-sensitive sinle silk 212 is ignited, and after one side burning to the tip towards heat-sensitive line safety protection structure 100, flame will get into in the back-fire relief passageway 13 through connector 11, and then can be set up the flame arresting structure 20 in back-fire relief passageway 13 and meet, and flame arresting structure 20 can eliminate flame in flame passageway 13, and then prevented flame from exhausting from gas vent 12 and contacted with the combustible gas in the external environment, or prevented from getting into flame passageway 13 from gas vent 12 in with the further burning of flame from heat-sensitive sinle silk 212, so the security of using under the combustible gas environment of heat-sensitive sinle silk 210 has been improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the fire protection scope of the present invention. Therefore, the scope of fire protection of the present patent shall be subject to the appended claims.

Claims

1. A heat-sensitive wire safety shield structure (100) mated with an end of a heat-sensitive wire (210), comprising:

the flame retardant shell (10) is provided with a connecting port (11), an exhaust port (12) and a flame suppression channel (13) for communicating the connecting port (11) with the exhaust port (12), the connecting port (11) is used for being matched and connected with one end of the thermosensitive wire (210), and the exhaust port (12) is communicated with the outside of the flame retardant shell (10); and

and the flame-extinguishing structure (20) is arranged in the flame-extinguishing channel (13) and is used for extinguishing flame in the flame-extinguishing channel (13).

2. The heat-sensitive wire safety guard structure (100) according to claim 1, wherein the flame trap structure (20) comprises a temperature-reducing flame trap structure capable of reducing the flame temperature to eliminate the flame.

3. The thermal wire safety guard structure (100) according to claim 2, wherein the temperature reducing flame arresting structure comprises a metal heat sink.

4. The heat-sensitive wire safety guard structure (100) according to claim 3, wherein the temperature reducing flame arresting structure comprises a metal mesh.

5. The heat-sensitive wire safety guard structure (100) according to claim 4, wherein the metal mesh is braided by a plurality of wires; or

The metal mesh is formed by metal piece openings.

6. A heat-sensitive wire safety guard structure (100) according to claim 4, wherein the metal mesh is in the shape of a cylinder or a sheet.

7. The heat-sensitive wire safety guard structure (100) according to claim 6, wherein when the metal mesh member is in a sheet shape, the metal mesh member includes a plurality of metal mesh members, and the plurality of metal mesh members are arranged at intervals along an extending direction of the flame-extinguishing passage (13).

8. The heat-sensitive wire safety feature (100) of claim 1, wherein the flame arresting structure (20) comprises an energy consuming flame arresting structure capable of reducing free radical reactions forming a flame to arrest the flame.

9. The heat-sensitive wire safety guard structure (100) according to claim 8, wherein the energy consuming flame arresting structure has a plurality of collision surfaces intersecting the extension direction of the flame arresting channel (13), the plurality of collision surfaces being spaced apart along the extension direction of the flame arresting channel (13).

10. The heat-sensitive wire safety feature (100) according to any one of claims 1 to 9, wherein the flame arresting structure (20) is fixed within the flame arresting channel (13).

11. The heat-sensitive thread safety guard structure (100) according to any one of claims 1 to 9, wherein the heat-sensitive thread safety guard structure (100) further comprises a gas permeable film covering the gas outlet (12).

12. A heat-sensitive wire assembly (200) comprising a heat-sensitive wire (210) and the heat-sensitive wire safety protection structure (100) as claimed in any one of claims 1 to 11, wherein one end of the heat-sensitive wire (210) is connected to the connection port (11).

13. The temperature-sensitive wire assembly (200) according to claim 12, wherein the temperature-sensitive wire (210) comprises a fireproof sleeve (211) and a temperature-sensitive wire core (212) wrapped in the fireproof sleeve (211), the fireproof shell (10) is provided with a connecting end, the connecting port (11) is arranged at the connecting end, and one end of the fireproof sleeve (211) facing the temperature-sensitive wire safety protection structure (100) is connected with the connecting end in an interference fit manner; and/or

One end, facing the thermosensitive wire safety protection structure (100), of the fireproof sleeve (211) is bonded with the connecting end; and/or

Fireproof sleeve (211) is located towards the pot head of temperature sensing line safety protection structure (100) junction department, temperature sensing line subassembly (200) still include the retaining member, the retaining member with the outside cooperation of fireproof sleeve (211) to provide fireproof sleeve (211) hug closely in the locking force of junction.

14. The temperature-sensitive wire assembly (200) according to claim 13, wherein when the end of the fire-proof sheath (211) facing the temperature-sensitive wire safety protection structure (100) is sleeved at the connection end, the temperature-sensitive wire assembly further comprises a locking member, the locking member is engaged with the outside of the fire-proof sheath (211) to provide a locking force of the fire-proof sheath (211) against the connection end;

wherein, be equipped with first joint portion on back-fire relief shell (10), be equipped with on the retaining member with the second joint portion of first joint looks joint.

15. A fire extinguishing apparatus (300) characterized by comprising an apparatus body (310) and a heat-sensitive wire assembly (200) according to any one of claims 12 to 14, wherein an end of the heat-sensitive wire (210) remote from the connection port (11) is connected to the apparatus body (310).