CN216908975U - Non-pressure-storage self-detection fire extinguisher - Google Patents
Non-pressure-storage self-detection fire extinguisher Download PDFInfo
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- CN216908975U CN216908975U CN202122778243.6U CN202122778243U CN216908975U CN 216908975 U CN216908975 U CN 216908975U CN 202122778243 U CN202122778243 U CN 202122778243U CN 216908975 U CN216908975 U CN 216908975U
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Abstract
The utility model discloses a non-pressure-storage self-detection fire extinguisher, which comprises a bottle body, wherein one end of the bottle body is connected with a container valve, the container valve is connected with an automatic fire extinguishing delivery pipe, the automatic fire extinguishing delivery pipe is synchronously provided with a thermosensitive wire, a piston is arranged in the bottle body, a cavity between the piston and the container valve is a fire extinguishing cavity, a cavity between the piston and the bottom wall of the bottle body is a control cavity, a fire extinguishing agent is arranged in the fire extinguishing cavity, the automatic fire extinguishing delivery pipe is communicated with the fire extinguishing cavity, a high-energy substance is arranged in the control cavity, the thermosensitive wire penetrates through the side wall of the bottle body, and one end, positioned in the bottle body, of the thermosensitive wire is connected with the high-energy substance. The non-pressure-storage self-detection fire extinguisher provided by the utility model has the advantages that the poor spraying effect of the fire extinguisher caused by overlong storage time is avoided, the service life is long, meanwhile, the fire extinguishing automatic conveying pipe and the heat-sensitive wire are synchronously arranged, the fire extinguishing reaction time is short, the reaction is rapid, and the fire extinguishing efficiency is high.
Description
Technical Field
The application relates to the field of fire extinguishers, in particular to a non-pressure-storage self-detection fire extinguisher.
Background
The automatic fire extinguishing device is an important device for effectively protecting people's life and property.
The automatic fire extinguishing device is divided into the following parts according to fire extinguishing agents: gas fire extinguishment, dry powder, water-based, foam, and the like;
wherein the gaseous extinguishing agent can be divided into: the gas extinguishing agent is the cleanest and has high extinguishing efficiency, but all need pressure release, and the container needs long-term pressure bearing, so that the use place is limited, and the maintenance cost is high.
At present, the existing automatic fire extinguishing device is started to release a fire extinguishing agent to extinguish fire by a self pressure storage method or a nitrogen pressurization method; the pressure vessel is checked once in 3 to 5 years according to the national standard, so that the later operation cost is greatly increased; the pressure-bearing fire extinguishing device has a plurality of use bottlenecks, such as new energy vehicles, aviation, aerospace, war industry and the like, and particularly on equipment with vibration and movement, the phenomenon of slow leakage is easy to occur, the maintenance is difficult, and once the pressure is insufficient, the fire extinguishing effect is poor, and even the fire can not be extinguished.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a non-pressure-storage self-detection fire extinguisher.
The application provides a non-pressure storage self-detecting fire extinguisher adopts following technical scheme:
the utility model provides a non-stores pressure and surveys fire extinguisher certainly, includes the bottle, the one end of bottle is connected with the automatic conveying pipe of putting out a fire, the automatic conveying pipe of putting out a fire is provided with the heat sensitive line in step, be provided with the piston in the bottle, cavity between piston and the container valve is the chamber of putting out a fire, cavity between piston and the bottle diapire is the control chamber, the intracavity of putting out a fire is provided with the fire extinguishing agent, the automatic conveying pipe of putting out a fire and the chamber intercommunication of putting out a fire, the control intracavity is provided with the high energy material, the heat sensitive line passes the lateral wall of bottle, the one end that the heat sensitive line is located the bottle is connected with the high energy material, the automatic conveying pipe of putting out a fire is located the one end that the high energy material was kept away from to the bottle.
Through adopting above-mentioned technical scheme, to put out a fire automatic conveying pipe and lay to equipment on, when equipment takes place the condition of a fire, the heat-sensitive line reaches the control intracavity high energy material after corresponding temperature and lights, it releases energy and promotes the piston to remove towards the container valve to light high energy material, the fire extinguishing agent of intracavity is put out a fire to the automatic release pipe extrusion to the piston extrusion, high energy material burning can make the chamber pressure of putting out a fire increase this moment, pressure transmission reaches the pipe wall of the automatic conveying pipe of putting out a fire, the automatic conveying pipe pressure-bearing of putting out a fire is heated back temperature and breaks a release opening when reaching release temperature at first, thereby put out a fire to the point and handle, this fire extinguisher can not lead to the fire extinguisher injection effect poor because of the depositing time overlength, long service life, automatic conveying pipe and heat-sensitive line synchronous set simultaneously put out a fire, the reaction time is short, the reaction is rapid, it is efficient to put out a fire.
Optionally, a fixing piece is arranged between one end, close to the bottom wall of the bottle body, of the side wall of the piston and the side wall of the bottle body, and when the fire extinguisher is in a balanced state, the fixing piece fixes the piston.
Through adopting above-mentioned technical scheme, when not having the conflagration to take place, the fire extinguisher is in balanced state, and the mounting is fixed the piston to avoid taking place to mix at the in-process fire extinguishing agent that the piston removed and high energy material, thereby improve extinguishing device's life.
Optionally, a guide shaft is arranged in the bottle body, the guide shaft is parallel to the length direction of the bottle body, and the guide shaft penetrates through the piston.
Through adopting above-mentioned technical scheme, the guiding axle leads the piston to improve the stability in the piston motion process.
Optionally, a groove is formed in one end, close to the bottom wall of the bottle body, of the side wall of the piston in the circumferential direction, a flexible fixing pad matched with the groove is fixedly connected to the side wall of the bottle body, when the fire extinguisher is in a balanced state, the flexible fixing pad is arranged in the groove, and when the fire extinguisher is in a trigger state, the groove in the piston is separated from the flexible fixing pad.
Through adopting above-mentioned technical scheme, flexible fixing pad is fixed the piston to avoid taking place to mix at the in-process fire extinguishing agent that the piston removed and high energy material, thereby improve extinguishing device's life.
Optionally, a spring is arranged on the bottom wall of the bottle body, one end of the spring is fixedly connected with the bottom wall of the bottle body, the other end of the spring is fixedly connected with the piston, when the fire extinguisher is in a balanced state, the spring is in a compressed state, and the spring is in contact with one end, far away from the bottom wall, of the bottle body in a normal state.
Through adopting above-mentioned technical scheme, flexible fixed bolster is fixed the spring, and when the fire extinguisher was in the trigger state, the spring impeld the fire extinguishing agent in the bottle, reduces the residue of fire extinguishing agent in the bottle.
Optionally, a placing cavity is formed in one end, close to the bottom wall of the bottle body, of the piston, the placing cavity is hemispherical, and the placing cavity is used for placing high-energy substances.
Through adopting above-mentioned technical scheme, the high energy material is detonated to the heat-sensitive wire, and the high energy material in placing the intracavity promotes the piston, and the chamber of placing that is spherical has reduced the impact of high energy material to the bottle lateral wall, has improved extinguishing device's security, has improved the ascending thrust of high energy material to the piston simultaneously.
Optionally, the end of the piston close to the bottom wall and the bottom wall of the bottle body are both provided with annular magnetic sealing strips, and the annular magnetic sealing strips attract each other and are in close contact with each other.
Through adopting above-mentioned technical scheme, annular magnetism sealing strip places the chamber to the piston and seals to prevent that the piston from placing the high energy material of intracavity and taking place to deteriorate because of weing.
Optionally, the thermosensitive wire penetrates through the bottle body, and one end of the thermosensitive wire, which is located in the bottle body, is arranged at the center of the bottle body.
By adopting the technical scheme, the thermosensitive wire detonates the high-energy substance from the center, so that the piston is stressed uniformly, and the piston is pushed rapidly.
Optionally, the both ends of bottle all fixedly connected with fixing base, two fixedly connected with backup pad between the fixing base, the backup pad has two, two the backup pad is located the both sides of bottle.
Through adopting above-mentioned technical scheme, fixing base and backup pad are fixed and are protected the bottle.
Optionally, the guide shaft is provided with threads, both ends of the guide shaft are rotatably connected with the bottle body, the guide shaft is in threaded connection with the piston, a stirring sheet is fixedly connected to a position of the guide shaft close to the bottom wall of the bottle body, and the stirring sheet is located in the spring.
By adopting the technical scheme, the guide shaft is driven to rotate in the process of moving the piston, and the stirring sheet is driven to rotate in the process of rotating the guide shaft, so that high-energy substances are fully combusted, and the utilization rate of the high-energy substances is improved.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model arranges the heat-sensitive wire and the automatic fire-extinguishing conveying pipe, lays the automatic fire-extinguishing conveying pipe on the equipment, when the equipment is in a fire condition, the heat-sensitive wire ignites the high-energy substance in the control cavity after reaching the corresponding temperature, the ignited high-energy substance releases energy to push the piston to move towards the container valve, the piston extrudes the fire extinguishing agent in the fire extinguishing cavity to extrude towards the automatic release pipe, the high-energy substance burns at the moment to increase the pressure of the fire extinguishing cavity, the pressure is transmitted to the pipe wall of the fire extinguishing automatic delivery pipe, the fire extinguishing automatic delivery pipe breaks a release port when the temperature reaches the release temperature firstly after bearing and being heated, thereby extinguishing the fire, the fire extinguisher can not cause poor spraying effect and long service life due to overlong storage time, meanwhile, the fire extinguishing automatic conveying pipe and the thermosensitive wire are synchronously arranged, so that the fire extinguishing reaction time is short, the reaction is rapid, and the fire extinguishing efficiency is high;
according to the fire extinguisher, the spring is arranged and fixed by the flexible fixing cushion, and when the fire extinguisher is in a trigger state, the spring pushes the fire extinguishing agent in the bottle body, so that the residue of the fire extinguishing agent in the bottle body is reduced;
according to the utility model, the stirring sheet is arranged, the guide shaft is driven to rotate in the moving process of the piston, and the stirring sheet is driven to rotate in the rotating process of the guide shaft, so that high-energy substances are fully combusted, and the utilization rate of the high-energy substances is improved.
Drawings
FIG. 1 is a schematic view showing the construction of a non-pressure-storing self-detecting fire extinguisher according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a bottle body of a non-pressure-storing self-detecting fire extinguisher according to a first embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view showing the positional connection between a guide shaft and a stirring piece in a non-pressure-storing self-detecting fire extinguisher according to a second embodiment of the present invention.
In the figure: 1. a bottle body; 2. an automatic fire extinguishing delivery pipe; 3. a heat-sensitive wire; 4. a piston; 5. a fire extinguishing chamber; 6. a control chamber; 7. a fixing member; 71. a groove; 72. a flexible fixing pad; 8. a guide shaft; 9. a spring; 10. a placement chamber; 11. an annular magnetic seal strip; 12. a fixed seat; 13. a support plate; 14. a stirring blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, the present invention provides an embodiment of a non-pressure-storing self-detecting fire extinguisher, which includes a bottle body 1, and a container valve is connected to one end of the bottle body 1. The container valve is connected with automatic conveying pipe 2 of putting out a fire, and automatic conveying pipe 2 of putting out a fire is provided with temperature sensing line 3 in step, is provided with piston 4 in the bottle 1, and the cavity between piston 4 and the container valve is chamber 5 that puts out a fire, and the cavity between piston 4 and the 1 diapire of bottle is control chamber 6. The fire extinguishing chamber 5 is internally provided with a fire extinguishing agent, the fire extinguishing automatic conveying pipe 2 is communicated with the fire extinguishing chamber 5, the control chamber 6 is internally provided with high-energy substances which are explosives, the heat-sensitive wire 3 passes through the side wall of the bottle body 1, and one end of the heat-sensitive wire 3, which is positioned in the bottle body 1, is connected with the high-energy substances.
Referring to fig. 1, 2 and 3, the fire extinguishing automatic conveying pipe 2 is laid on the equipment, and when a fire occurs in the equipment, the heat-sensitive wire 3 ignites the high-energy substance in the control cavity 6 after reaching the corresponding temperature, the ignited high-energy substance releases energy to push the piston 4 to move towards the container valve, the piston 4 extrudes the fire extinguishing agent in the fire extinguishing cavity 5 to extrude towards the automatic release pipe, the high-energy substance burns at the moment to increase the pressure of the fire extinguishing cavity 5, the pressure is transmitted to the pipe wall of the fire extinguishing automatic conveying pipe 2, the fire extinguishing automatic conveying pipe 2 is broken by a release port when the temperature reaches the release temperature at first after bearing and heating, thereby carrying out fire extinguishing treatment on the ignition point, the fire extinguisher can not cause poor spraying effect and long service life due to overlong storage time, meanwhile, the fire extinguishing automatic conveying pipe 2 and the thermosensitive wire 3 are synchronously arranged, so that the fire extinguishing reaction time is short, the reaction is rapid, and the fire extinguishing efficiency is high.
Referring to fig. 3, a fixing member 7 is provided between one end of the side wall of the piston 4 close to the bottom wall of the body 1 and the side wall of the body 1, and the fixing member 7 fixes the piston 4 when the fire extinguisher is in a balanced state. When no fire breaks out, the fire extinguisher is in a balanced state, and the fixing piece 7 fixes the piston 4, so that the fire extinguishing agent and the high-energy substance are prevented from being mixed in the moving process of the piston 4, and the service life of the fire extinguishing device is prolonged.
Referring to fig. 3, a groove 71 is circumferentially formed in one end of the side wall of the piston 4 close to the bottom wall of the bottle body 1, a flexible fixing pad 72 matched with the groove 71 is fixedly connected to the side wall of the bottle body 1, when the fire extinguisher is in a balanced state, the flexible fixing pad 72 is placed in the groove 71, and when the fire extinguisher is in a trigger state, the groove 71 on the piston 4 is separated from the flexible fixing pad 72. The flexible fixing pad 72 fixes the piston 4, thereby preventing the mixing of the fire extinguishing agent and the high energy substance in the process of the movement of the piston 4, and improving the service life of the fire extinguishing apparatus.
Referring to fig. 2 and 3, the inside of the bottle body 1 is provided with a guide shaft 8, the guide shaft 8 is parallel to the length direction of the bottle body 1, and the guide shaft 8 passes through the piston 4. The guide shaft 8 guides the piston 4, thereby improving stability during movement of the piston 4.
Referring to fig. 3, a spring 9 is arranged on the bottom wall of the bottle body 1, one end of the spring 9 is fixedly connected with the bottom wall of the bottle body 1, the other end of the spring 9 is fixedly connected with the piston 4, when the fire extinguisher is in a balanced state, the spring 9 is in a compressed state, and the spring 9 is abutted to one end of the bottle body 1 far away from the bottom wall in a normal state. The flexible fixing pad 72 fixes the spring 9, and when the fire extinguisher is in a trigger state, the spring 9 pushes the fire extinguishing agent in the bottle body 1, so that the residue of the fire extinguishing agent in the bottle body 1 is reduced.
Referring to fig. 3, a placing cavity 10 is formed at one end of the piston 4 close to the bottom wall of the bottle body 1, the placing cavity 10 is hemispherical, and the placing cavity 10 is used for placing high-energy substances. The heat-sensitive wire 3 detonates the high-energy substance, the high-energy substance in the placing cavity 10 pushes the piston 4, the spherical placing cavity 10 reduces the impact of the high-energy substance on the side wall of the bottle body 1, the safety of the fire extinguishing device is improved, and meanwhile, the upward pushing force of the high-energy substance on the piston 4 is improved.
Referring to fig. 3, the end of the piston 4 close to the bottom wall and the bottom wall of the bottle body 1 are both provided with an annular magnetic sealing strip 11, the two annular magnetic sealing strips 11 attract each other, and the two annular magnetic sealing strips 11 are in close contact. The annular magnetic sealing strip 11 seals the piston 4 placing cavity 10, so that the energetic substances in the piston 4 placing cavity 10 are prevented from being deteriorated due to the moisture.
Referring to fig. 3, the heat-sensitive wire 3 passes through the bottle body 1, and one end of the heat-sensitive wire 3 located inside the bottle body 1 is disposed at the center of the bottle body 1. The heat-sensitive wire 3 detonates the energetic substance from the center, so that the piston 4 is uniformly stressed, thereby rapidly advancing the piston 4.
Referring to fig. 3, the two ends of the bottle body 1 are fixedly connected with the fixing bases 12, the supporting plates 13 are fixedly connected between the two fixing bases 12, the number of the supporting plates 13 is two, and the two supporting plates 13 are located at the two sides of the bottle body 1. The fixing base 12 and the supporting plate 13 fix and protect the bottle body 1.
The working principle is as follows: lay automatic conveying pipe 2 of will putting out a fire on equipment, when the condition of a fire takes place for equipment, high energy substance in control chamber 6 is lighted after heat-sensitive line 3 reaches corresponding temperature, the high energy substance that is lighted releases energy and promotes piston 4 and remove towards the container valve, the fire extinguishing agent in the chamber 5 of putting out a fire is extruded to the automatic release pipe to piston 4 extrusion, high energy substance burning can make 5 pressure in chamber 5 of putting out a fire increase this moment, pressure transmission reaches the pipe wall of automatic conveying pipe 2 of putting out a fire, the automatic conveying pipe 2 of putting out a fire pressure-bearing is heated back temperature and breaks a release opening when reaching release temperature at first, thereby put out a fire to the point of putting out a fire and handle, this fire extinguisher can not lead to the fire extinguisher injection effect poor because of the dwell time overlength, long service life, automatic conveying pipe 2 of putting out a fire sets up with heat-sensitive line 3 simultaneously, the reaction time of putting out a fire is short, the reaction is rapid, the efficiency of putting out a fire is high.
The flexible fixing pad 72 fixes the spring 9, and when the fire extinguisher is in a trigger state, the spring 9 pushes the fire extinguishing agent in the bottle body 1, so that the residue of the fire extinguishing agent in the bottle body 1 is reduced.
Second embodiment, referring to fig. 4, the difference between the first embodiment and the second embodiment is that a guide shaft 8 is provided with a thread, two ends of the guide shaft 8 are rotatably connected with the top wall and the bottom wall of the bottle body 1, the guide shaft 8 is in threaded connection with the piston 4, a stirring piece 14 is fixedly connected to the position of the guide shaft 8 close to the bottom wall of the bottle body 1, and the stirring piece 14 is located in the spring 9.
The working principle is as follows: in the process that the piston 4 moves, the guide shaft 8 is driven to rotate, the stirring sheet 14 is driven to rotate in the process that the guide shaft 8 rotates, and the stirring sheet 14 stirs high-energy substances, so that the high-energy substances are fully combusted, and the utilization rate of the high-energy substances is improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a non-pressure storage self-detecting fire extinguisher which characterized in that: comprises a bottle body (1), one end of the bottle body (1) is connected with an automatic fire-extinguishing conveying pipe (2), the fire-extinguishing automatic conveying pipe (2) is synchronously provided with a heat-sensitive wire (3), a piston (4) is arranged in the bottle body (1), the cavity between the piston (4) and the container valve is a fire extinguishing cavity (5), the cavity between the piston (4) and the bottom wall of the bottle body (1) is a control cavity (6), the fire extinguishing chamber (5) is internally provided with a fire extinguishing agent, the automatic fire extinguishing conveying pipe (2) is communicated with the fire extinguishing chamber (5), a high-energy substance is arranged in the control cavity (6), the high-energy substance is explosive, the heat-sensitive wire (3) penetrates through the side wall of the bottle body (1), one end of the thermosensitive wire (3) positioned in the bottle body (1) is connected with the high-energy substance, the automatic fire extinguishing delivery pipe (2) is positioned at one end of the bottle body (1) far away from the high-energy substances.
2. The non-pressure-storage self-detecting fire extinguisher according to claim 1, wherein: a fixing piece (7) is arranged between one end, close to the bottom wall of the bottle body (1), of the side wall of the piston (4) and the side wall of the bottle body (1), and when the fire extinguisher is in a balanced state, the fixing piece (7) fixes the piston (4).
3. The non-pressure-storage self-detecting fire extinguisher according to claim 1, wherein: a guide shaft (8) is arranged in the bottle body (1), the guide shaft (8) is parallel to the length direction of the bottle body (1), and the guide shaft (8) penetrates through the piston (4).
4. The non-pressure-storage self-detecting fire extinguisher according to claim 3, wherein: one end of the side wall of the piston (4), which is close to the bottom wall of the bottle body (1), is circumferentially provided with a groove (71), the side wall of the bottle body (1) is fixedly connected with a flexible fixing pad (72) matched with the groove (71), when the fire extinguisher is in a balanced state, the flexible fixing pad (72) is arranged in the groove (71), and when the fire extinguisher is in a trigger state, the groove (71) on the piston (4) is separated from the flexible fixing pad (72).
5. The non-pressure-storage self-detecting fire extinguisher according to claim 4, wherein: be provided with spring (9) on the diapire of bottle (1), the one end of spring (9) and the diapire fixed connection of bottle (1), the other end and piston (4) fixed connection of spring (9), when the fire extinguisher is in balanced state, spring (9) are in compression state, spring (9) are inconsistent with the one end that the diapire was kept away from to bottle (1) under normal condition.
6. The non-pressure-storage self-detecting fire extinguisher according to claim 5, wherein: one end of the piston (4) close to the bottom wall of the bottle body (1) is provided with a placing cavity (10), the placing cavity (10) is hemispherical, and the placing cavity (10) is used for placing high-energy substances.
7. The non-pressure-storage self-detecting fire extinguisher according to claim 5, wherein: and one end of the piston (4) close to the bottom wall and the bottom wall of the bottle body (1) are respectively provided with an annular magnetic sealing strip (11), and the annular magnetic sealing strips (11) attract each other and are in close contact with each other.
8. The non-pressure-storage self-detecting fire extinguisher according to claim 7, wherein: the heat-sensitive wire (3) penetrates through the bottle body (1), and one end, located in the bottle body (1), of the heat-sensitive wire (3) is arranged at the center of the bottle body (1).
9. The non-pressure-storing self-detecting fire extinguisher according to claim 7, wherein: the bottle comprises a bottle body (1), wherein fixing seats (12) are fixedly connected to two ends of the bottle body (1), a supporting plate (13) is fixedly connected between the two fixing seats (12), the number of the supporting plates (13) is two, and the two supporting plates (13) are located on two sides of the bottle body (1).
10. The non-pressure-storage self-detecting fire extinguisher according to claim 3, wherein: the bottle is characterized in that the guide shaft (8) is provided with threads, the two ends of the guide shaft (8) are rotatably connected with the bottle body (1), the guide shaft (8) is in threaded connection with the piston (4), the position of the guide shaft (8) close to the bottom wall of the bottle body (1) is fixedly connected with a stirring sheet (14), and the stirring sheet (14) is located in the spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122778243.6U CN216908975U (en) | 2021-11-12 | 2021-11-12 | Non-pressure-storage self-detection fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122778243.6U CN216908975U (en) | 2021-11-12 | 2021-11-12 | Non-pressure-storage self-detection fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216908975U true CN216908975U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122778243.6U Active CN216908975U (en) | 2021-11-12 | 2021-11-12 | Non-pressure-storage self-detection fire extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216908975U (en) |
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2021
- 2021-11-12 CN CN202122778243.6U patent/CN216908975U/en active Active
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