CN216022877U

CN216022877U - Thermosensitive wire and fire extinguishing device

Info

Publication number: CN216022877U
Application number: CN202122077114.4U
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: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-03-15
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to a heat-sensitive wire and a fire extinguishing device, wherein the heat-sensitive wire comprises a fireproof sleeve, a fire prevention section and a flame suppression section, wherein the fireproof sleeve comprises the fireproof section and the flame suppression section which are sequentially connected along the lengthwise direction; and a heat-sensitive wire core disposed within the flame-proof section, the heat-sensitive wire core configured to be capable of spontaneous combustion in response to an external ambient temperature; wherein, the flame-extinguishing section is used for eliminating the flame in the flame-extinguishing section. According to the thermosensitive wire and the fire extinguishing device provided by the utility model, the flame extinguishing section is arranged, so that the thermosensitive wire core can be prevented from self-flowing, then, the flame is discharged from one end of the flame extinguishing section communicated with the outside and is contacted with combustible gas in the external environment, or the flame entering the flame extinguishing section from one end of the flame extinguishing section communicated with the outside and further burning with the flame from the thermosensitive wire core are prevented, and therefore, the safety of the thermosensitive wire in the combustible gas environment is improved.

Description

Thermosensitive wire and fire extinguishing device

Technical Field

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

Background

The heat-sensitive wire is a linear structure which is made of a temperature-sensing spontaneous combustion material and is connected with the fire extinguishing device, when a fire disaster happens, the heat-sensitive wire in the protection area can be spontaneously combusted when reaching a certain temperature, and the fire extinguishing device is started by utilizing heat generated by spontaneous combustion.

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 and a fire extinguishing apparatus capable of preventing sparks of a heat-sensitive core from igniting and detonating a combustible gas in a combustible gas use scene, aiming at the problem that when the existing heat-sensitive wire is used in the fire extinguishing apparatus having the combustible gas use scene, the fire extinguishing apparatus has a great hidden danger of igniting and detonating the combustible gas.

In one aspect of the present application, there is provided a thermosensitive wire including:

the fireproof sleeve comprises a fireproof section and a flame-extinguishing section which are sequentially connected along the lengthwise direction of the fireproof sleeve; and

a thermally sensitive wire core disposed within the flame resistant section, the thermally sensitive wire core configured to be capable of spontaneous combustion in response to an external ambient temperature;

wherein, the flame-extinguishing section is used for eliminating the flame in the flame-extinguishing section.

In one embodiment, when the length of the heat-sensitive wire core is less than 50 mm, the length of the flame-extinguishing section is more than 0.3 times of the length of the heat-sensitive wire core.

In one embodiment, when the length of the heat-sensitive wire core is more than 50 mm, the length of the flame-extinguishing section is more than 0.5 times of the length of the heat-sensitive wire core.

In one embodiment, the radial dimension of the flame trap section tends to decrease towards the end remote from the flame trap section.

In one embodiment, the flame-extinguishing section comprises a plurality of blocking parts arranged at intervals along the longitudinal direction of the flame-extinguishing section, the blocking parts are formed by connecting partial wall surfaces of at least two flame-extinguishing sections, and at least one end of each blocking part has a gap with the rest wall surface of the flame-extinguishing section along the radial direction of the flame-extinguishing section.

In one embodiment, the blocking part is formed by connecting partial wall surfaces of at least two flame-extinguishing sections which are spaced from each other; and/or

The blocking part is formed by connecting partial wall surfaces of at least two fire-proof sleeves which are connected with each other.

In one embodiment, at least two partial wall surfaces of the flame-extinguishing section form the barrier part through hot-melt adhesion.

In one embodiment, partial wall surfaces of at least two flame-extinguishing sections are crimped by crimping pieces to form the blocking parts.

In one embodiment, the crimp member comprises sewing thread.

In one embodiment, the flame trap section communicates with the outside, away from the flame shield section.

On the other hand, the application also provides a fire extinguishing device, which comprises a device body and the thermosensitive wire, wherein one end of the thermosensitive wire, which is far away from the flame extinguishing section, is connected with the device body.

Above-mentioned heat sensitive line and extinguishing device, through setting up the flame extinguishing section, when the heat sensitive sinle silk spontaneous combustion in the flame extinguishing section, and after the tip of flame extinguishing section burning to the flame extinguishing section towards, flame will get into in the flame extinguishing section, and then can be eliminated in the flame extinguishing section, the one end discharge of flame from flame extinguishing section and outside intercommunication has been prevented, and with the combustible gas contact in the external environment, perhaps prevent to get into flame extinguishing section from flame extinguishing section and the one end of outside intercommunication in with the further burning of flame that comes from the heat sensitive sinle silk, the event has improved the security that the heat sensitive line used under the combustible gas environment.

Drawings

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

fig. 2 is a schematic cross-sectional view of a thermal wire according to an embodiment of the utility model.

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.

The heat-sensitive line comprises heat-sensitive sinle silk and fire prevention sleeve pipe usually, and the one end of heat-sensitive line is located extinguishing device body outside for respond outside environment temperature, and the other end of heat-sensitive line links to each other with the extinguishing device body, is used for igniting gas production agent or fire extinguishing agent etc. in it, thereby starts extinguishing device body and sprays the fire extinguishing substance and put out a fire.

And the fire protection sleeve pipe 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 protection sleeve pipe, 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 prevention cover pipe 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 life and property safety on every side seriously.

FIG. 1 shows a schematic view of a fire suppression apparatus in an embodiment of the present invention; fig. 2 shows a schematic cross-sectional structure of the heat-sensitive wire 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 100 including a fire-proof sleeve 10 and a heat-sensitive wire core 20. The heat-sensitive wire 100 of the present application may be applied to the fire extinguishing apparatus 200, and may also be applied to other apparatuses to which the heat-sensitive wire is applied, without being limited thereto.

The fire-proof sleeve 10 comprises a fire-proof section 11 and a flame-extinguishing section 12 which are sequentially connected along the longitudinal direction of the fire-proof sleeve, wherein a heat-sensitive wire core 20 is arranged in the fire-proof section 11, the heat-sensitive wire core 20 is configured to be capable of self-igniting in response to the external environment temperature, and the flame-extinguishing section 12 is used for extinguishing flame in the flame-extinguishing section. In particular, the fire sleeve 10 may be a fiberglass tube, and in other embodiments, may be coated with a fire retardant coating.

It is noted that the thermally sensitive core 20 is able to naturally within the fire sleeve 10 in response to the external ambient temperature.

It is also noted that the end of the flame-extinguishing section 12 remote from the flame-proof section 11 communicates with the outside. In this way, after the heat-sensitive wire core 20 is ignited, the gas in the fireproof sleeve 10 is heated and expanded, and can be timely discharged from the end of the flame-extinguishing section 12 far away from the fireproof section 11, without exploding the heat-sensitive wire 100.

Through setting up flame holding section 12, when heat-sensitive sinle silk 20 spontaneous combustion in flame holding section 11, and towards flame holding section 12 after the tip of burning to flame holding section 11, flame will get into flame holding section 12 in, and then can be eliminated in flame holding section 12, prevented that flame from discharging from flame holding section 12 and the one end of outside intercommunication, and with the combustible gas contact in the external environment, or prevent to get into flame holding section 12 from flame holding section 12 and the one end of outside intercommunication in with the further burning of flame from heat-sensitive sinle silk 20, the event has improved the security that heat-sensitive wire 100 used under the combustible gas environment.

Referring to fig. 2 again, in the embodiment of the present application, when the length of the thermal core 20 is less than 50 mm, the length of the flame-extinguishing section 12 is more than 0.3 times the length of the thermal core 20. In other embodiments, when the length of the heat sensitive wire core 20 is greater than 50 mm, the length of the flame trap section 12 is more than 0.5 times the length of the heat sensitive wire core 20. In this way, the flame-extinguishing effect can be achieved by simply increasing the length of the flame-extinguishing section 12 without changing the structure of the original flame-proof sleeve 10.

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. Therefore, increasing the length of the flame-extinguishing section 12 reduces the probability of collision between the free radicals and the reactive molecules, and increases the probability of collision between the free radicals and the inner wall of the flame-extinguishing section 12, thus promoting a reduction in the free radical reaction. When the flame-extinguishing section 12 is lengthened to a certain value, a condition that the flame cannot continue to propagate is created, and the flame is eliminated.

Based on the same distance, in some embodiments, the radial dimension of the flame-extinguishing section 12 tends to decrease in a direction away from the flame-proof section 11. In this way, the probability of collision of the radicals with the inner wall of the flame-extinguishing section 12 is also increased.

It should be noted that, the radial dimension of the flame-extinguishing section 12 tends to decrease in a direction away from the flame-proof section 11, which means that the radial dimension of the flame-extinguishing section 12 may decrease gradually in a linear manner in a direction away from the flame-proof section 11, or may decrease in a curved manner or in a stepwise manner, and is not limited herein.

In other embodiments of the present application, the flame holding section 12 includes a plurality of blocking portions 121 spaced apart from each other along a longitudinal direction thereof, the blocking portions 121 are formed by connecting partial wall surfaces of at least two flame holding sections 12, and at least one end of each of the blocking portions 121 has a gap with a remaining wall surface of the flame holding section 12 along a radial direction of the flame holding section 12. In this way, the flame is blocked by the plurality of blocking portions 121 in the process of being discharged outwards, on one hand, the path of the flame reaching the flame extinguishing section 12 away from the fireproof section 11 can be prolonged, and on the other hand, when the flame passes through the blocking portions 121, the flame can collide with the flame extinguishing section, so that the collision area is increased, and the flame extinguishing effect is further enhanced.

Further, the blocking portion 121 is formed by connecting partial wall surfaces of at least two flame extinguishing sections 12 spaced apart from each other, so that a gap may be formed between both ends of the blocking portion 121 and the remaining wall surfaces of the flame extinguishing sections 12 in a radial direction of the flame extinguishing sections 12, and the flame can be divided into finer flames while passing through the blocking portion 121, thereby preventing the flame from being enlarged and thus eliminating the flame. In other embodiments, the barrier 121 is formed by connecting portions of the wall surfaces of at least two flame trap sections 12 connected to each other. In this way, a gap is formed between only one end of the blocking portion 121 and the remaining wall surface of the flame-extinguishing section 12 in the radial direction of the flame-extinguishing section 12, thereby increasing the blocking area. Specifically, the blocking portion 121 is linear, and may be point-shaped in other embodiments, which is not limited herein.

Furthermore, at least two partial wall surfaces of the flame-extinguishing section 12 are formed into the blocking portion 121 by hot-melt adhesion. The hot melt bonding mode is simple, and no additional part is needed for connection, so that the cost is saved.

In other embodiments, the blocking portion 121 may be formed by pressing and connecting part of the wall surfaces of at least two flame-extinguishing sections 12 by a pressing and connecting member. Specifically, the crimp member includes sewing thread. In general, the fireproof sleeve 10 is soft, so that the flame-extinguishing section 12 is sewn by sewing threads to obtain the blocking portion 121 more easily, the sewing position is accurate, the manufacturing stability of the blocking portion 121 is improved, and the good flame-extinguishing effect is ensured.

In some embodiments, two adjacent barriers 121 are staggered along the longitudinal direction of the flame-extinguishing section 12 along the gap between the radial direction of the flame-extinguishing section 12 and the remaining wall surface of the flame-extinguishing section 12. In this way, after the flame passes through the first blocking portion 121, the flame can collide with the second blocking portion 121, not the gap, so that the number of collisions is increased, and the flame-extinguishing effect is better.

Referring to fig. 1 again, based on the same inventive concept, the present application further provides a fire extinguishing apparatus 200, which includes an apparatus body 210 and the above-mentioned heat-sensitive wire 200, wherein an end of the heat-sensitive wire 200 away from the flame-extinguishing section 12 is connected to the apparatus body 210.

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

the flame extinguishing section 12 is arranged, when the thermosensitive wire core 20 is spontaneously combusted in the fireproof section 11 and burns to the end part of the fireproof section 11 towards the flame extinguishing section 12, flame enters the flame extinguishing section 12 and then can be eliminated in the flame extinguishing section 12, so that the flame is prevented from being discharged from one end of the flame extinguishing section 12 communicated with the outside and contacting with combustible gas in the external environment, or the flame entering the flame extinguishing section 12 from one end of the flame extinguishing section 12 communicated with the outside and further burning with the flame from the thermosensitive wire core 20, and therefore the use safety of the thermosensitive wire 100 in the combustible gas environment is 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 (100), comprising:

the fireproof sleeve (10) comprises a fireproof section (11) and a flame-extinguishing section (12) which are sequentially connected along the lengthwise direction of the fireproof sleeve; and

a heat-sensitive wire core (20) disposed within the flame-proof section (11), the heat-sensitive wire core (20) being configured to be self-igniting in response to an external ambient temperature;

wherein the flame-extinguishing section (12) is used for eliminating the flame in the flame-extinguishing section.

2. The thermal wire (100) according to claim 1, wherein the length of the flame-quenching section (12) is more than 0.3 times the length of the thermal wire core (20) when the length of the thermal wire core (20) is less than 50 mm.

3. The thermal wire (100) according to claim 1, wherein the length of the flame-quenching section (12) is more than 0.5 times the length of the thermal wire core (20) when the length of the thermal wire core (20) is more than 50 mm.

4. A heat-sensitive wire (100) according to claim 1, wherein the radial dimension of the flame-extinguishing section (12) tends to decrease towards the end remote from the flame-proof section (11).

5. The heat-sensitive wire (100) according to any one of claims 1 to 4, wherein the flame-extinguishing section (12) comprises a plurality of barriers (121) arranged at intervals along the longitudinal direction of the flame-extinguishing section, the barriers (121) are formed by connecting partial wall surfaces of at least two flame-extinguishing sections (12), and at least one end of each barrier (121) has a gap with the rest of the wall surfaces of the flame-extinguishing section (12) along the radial direction of the flame-extinguishing section (12).

6. The heat-sensitive wire (100) according to claim 5, wherein the blocking portion (121) is formed by connecting partial wall surfaces of at least two spaced flame-extinguishing sections (12); and/or

The blocking part (121) is formed by connecting partial wall surfaces of at least two fire-proof sleeves (10) which are connected with each other.

7. The heat-sensitive wire (100) according to claim 5, wherein the blocking portion (121) is formed by hot-melt bonding of partial wall surfaces of at least two of the flame-extinguishing sections (12).

8. A thermistor wire (100) according to claim 5, characterized in that part of the wall surfaces of at least two flame-extinguishing sections (12) are crimped by crimping means to form the barrier (121).

9. A thermo-sensitive thread (100) according to claim 8, characterised in that the crimp comprises sewing thread.

10. The heat-sensitive wire (100) according to claim 1, wherein the flame-extinguishing section (12) communicates with the outside, away from the flame-proof section (11).

11. A fire extinguishing apparatus (200) comprising an apparatus body (210) and a heat-sensitive wire (100) according to any one of claims 1 to 10, wherein an end of the heat-sensitive wire (100) remote from the flame-extinguishing section (12) (12) is connected to the apparatus body (210).