Prefabricated temperature sensing fire extinguishing device

Abstract

The utility model provides a prefabricated temperature-sensing fire extinguishing device which comprises an outer shell, a first plugging piece plugged at one end of the outer shell, a second plugging piece plugged at the other end of the outer shell, a piston piece, a blasting diaphragm and an aerosol initiation assembly, and the first plugging piece is connected with a nozzle; the piston piece is movably arranged in the outer shell and located at the end close to the second plugging piece, an initiation bin is formed between the piston piece and the second plugging piece, and a fire extinguishing agent filling cavity is formed between the piston piece and the first plugging piece. A spraying channel enabling the nozzle to communicate with the fire extinguishing agent filling cavity is formed in the first plugging piece, and the blasting diaphragm is arranged in the spraying channel. An aerosol initiation assembly is disposed within the initiation bin, the aerosol initiation assembly having a thermosensitive wire extending out of the second plugging member. The fire extinguishing device has the advantages that the aerosol triggering component is not in contact with the fire extinguishing agent after triggering, so that the fire extinguishing effect of the fire extinguishing agent can be prevented from being influenced; and the device can also be prevented from being damaged due to overheating or causing fire disasters caused by other substances.

Description

[Technical field]

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to a prefabricated temperature-sensitive fire extinguishing device. [Background technology]

[0002] Fire extinguishers are one of the common fire prevention facilities. They are installed or stored in public places and other places where fires may occur. Different types of fire extinguishers are filled with different extinguishing agents, such as carbon dioxide fire extinguishing agent, heptafluoropropane fire extinguishing agent, hexafluoropropane fire extinguishing agent, perfluorohexanone fire extinguishing agent, etc. Among them, perfluorohexanone fire extinguishing agent is a new type of fire extinguishing agent with good environmental performance. It has the characteristics of low fire extinguishing concentration, high fire extinguishing efficiency, high safety factor, non-conductivity, and no residue.

[0003] At present, the fire extinguishing devices on the market are generally divided into pressure-storage fire extinguishing devices and non-pressure-storage fire extinguishing devices, among which the pressure-storage fire extinguishing devices have a large overall volume and weight, which is inconvenient to install and use; while the non-pressure-storage fire extinguishing devices have a small volume and weight, which are more convenient to install and use, such as a non-pressure-storage perfluorohexanone fire extinguishing device disclosed in the Chinese utility model patent with application number CN202220827091.6, which starts the hot aerosol in the driving device by starting the thermal wire or ignition head in the starting device, and the high temperature generated by the hot aerosol breaks the perfluorohexanone medicine bag and vaporizes the perfluorohexanone liquid. However, the hot aerosol triggered by the existing fire extinguishing device will be sprayed out along with the fire extinguishing agent, which may affect the fire extinguishing effect. Therefore, it is urgent to develop a fire extinguishing device that can prevent the triggered hot aerosol from being sprayed out along with the fire extinguishing agent. [Contents of the utility model]

[0004] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a prefabricated temperature-sensitive fire extinguishing device.

[0005] The utility model is implemented as follows: a prefabricated temperature-sensitive fire extinguishing device, comprising an outer shell, a first blocking member blocking one end of the outer shell, a second blocking member blocking the other end of the outer shell, a piston, a bursting membrane and an aerosol triggering assembly, wherein the first blocking member is connected to a nozzle;

[0006] The piston member is movably arranged in the outer shell and is located at one end close to the second blocking member, a triggering chamber is formed between the piston member and the second blocking member, and a fire extinguishing agent filling chamber is formed between the piston member and the first blocking member; a spraying channel that connects the nozzle with the fire extinguishing agent filling chamber is formed in the first blocking member, and the bursting membrane is arranged in the spraying channel; the aerosol triggering assembly is arranged in the triggering chamber, and the aerosol triggering assembly has a thermal sensitive line extending outside the second blocking member.

[0007] Furthermore, it also includes a one-way cooling valve, which is arranged on the piston member; when the aerosol triggering assembly drives the piston member to move, so that the fire extinguishing agent in the fire extinguishing agent filling chamber is sprayed out through the nozzle, the one-way cooling valve reversely inputs the fire extinguishing agent into the triggering chamber for cooling.

[0008] Furthermore, the one-way cooling valve comprises a valve body, a push rod, a spring and a sealing ring;

[0009] A conveying channel is provided through the valve body, and a support portion is provided at one end of the valve body at a position in front of the conveying channel; the push rod passes through the conveying channel and the support portion, and a first limiting portion is provided at one end of the push rod close to the aerosol triggering component, and a second limiting portion is provided at one end of the push rod away from the aerosol triggering component; the sealing ring is sleeved on the push rod at a position close to the first limiting portion, and under normal circumstances, the sealing ring blocks the conveying channel; the spring is sleeved on the push rod at a position close to the second limiting portion, and one end of the spring abuts against the second limiting portion, and the other end of the spring abuts against the support portion.

[0010] Furthermore, the piston member includes a piston body movably arranged in an outer shell and a first sealing ring; a first sealing groove is arranged on the piston body around the circumferential direction, the first sealing ring is sleeved in the first sealing groove, and the first sealing ring is pressed tightly against the inner wall of the outer shell.

[0011] Furthermore, a projection cavity communicating with the triggering chamber is formed on a side of the piston body facing the aerosol triggering component, and the free end of the aerosol triggering component extends into the projection cavity.

[0012] Furthermore, the aerosol triggering assembly includes a storage shell installed on the inner side of the second sealing member and a hot aerosol arranged in the storage shell. The storage shell is provided with a plurality of connecting openings on a side facing the piston member to connect the interior of the storage shell with the triggering chamber; the thermal sensitive line extends to the position where the hot aerosol is located.

[0013] Furthermore, the first blocking member and the second blocking member are both detachably connected to the outer shell.

[0014] Furthermore, the insertion ends of the first blocking member and the second blocking member are both provided with second sealing grooves, and second sealing rings are both provided in the second sealing grooves, and the second sealing rings are pressed tightly against the inner wall of the outer shell.

[0015] Furthermore, mounting brackets are provided at both ends of the outer shell.

[0016] By adopting the technical solution of the utility model, at least the following beneficial effects are achieved:

[0017] 1. A piston is movably arranged in the outer shell, and a trigger chamber is formed on one side of the piston with the piston as the boundary, and a fire extinguishing agent filling chamber is formed on the other side of the piston. At the same time, an aerosol trigger assembly is arranged in the trigger chamber, so that in specific work, the aerosol trigger assembly can be used to produce gas and increase pressure to drive the piston to move. During the movement, the piston can push the fire extinguishing agent in the fire extinguishing agent filling chamber to break the bursting membrane, thereby releasing the fire extinguishing agent in the fire extinguishing agent filling chamber; since the aerosol trigger assembly and the fire extinguishing agent are separated by the piston assembly, the aerosol trigger assembly will only push the piston forward after triggering, and will not contact the fire extinguishing agent, thereby avoiding adverse effects on the fire extinguishing effect of the fire extinguishing agent.

[0018] 2. A one-way cooling valve is cleverly provided on the piston member, so that when the aerosol initiating assembly drives the piston member to move and releases the fire extinguishing agent in the fire extinguishing agent filling chamber, the fire extinguishing agent can also be reversely input into the initiating chamber through the one-way cooling valve, so as to utilize the fire extinguishing agent to cool down the initiating chamber, thereby effectively preventing the device from being damaged due to overheating or causing fires of other substances.

[0019] 3. By designing the piston body to have an insertion cavity connected to the trigger chamber on the side facing the aerosol trigger assembly, and extending the free end of the aerosol trigger assembly into the insertion cavity, the space occupied by the trigger chamber can be reduced, making the structure of the entire prefabricated temperature-sensing fire extinguishing device more compact, which is conducive to the miniaturization of the prefabricated temperature-sensing fire extinguishing device.

Brief Description of the Drawings

[0020] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0021] Figure 1 It is a cross-sectional view of a prefabricated temperature-sensitive fire extinguishing device of the utility model;

[0022] Figure 2 This is a partial structural diagram of a prefabricated temperature-sensitive fire extinguishing device of the utility model;

[0023] Figure 3 It is a structural diagram of the one-way cooling valve in the utility model;

[0024] Figure 4 yes Figure 3 A top view of

[0025] Figure 5 It is a cross-sectional view of the one-way cooling valve in the utility model when the sealing ring blocks the conveying channel;

[0026] Figure 6 It is a cross-sectional view of the one-way cooling valve of the utility model when the blocking ring is separated from the conveying channel.

[0027] Description of reference numerals:

[0028] Prefabricated temperature-sensitive fire extinguishing device 100;

[0029] An outer shell 1, an initiation chamber 11, a fire extinguishing agent filling chamber 12, and a mounting bracket 13;

[0030] First blocking member 2, spray channel 21;

[0031] The second blocking member 3;

[0032] Piston member 4, piston body 41, first sealing groove 411, extending into cavity 412, first sealing ring 42;

[0033] Bursting disk 5;

[0034] Aerosol triggering assembly 6, thermal line 61, storage housing 62, communication opening 621, hot aerosol 63;

[0035] Nozzle 7;

[0036] One-way cooling valve 8, valve body 81, delivery channel 811, support portion 812, push rod 82, first limiting portion 821, second limiting portion 822, spring 83, blocking ring 84;

[0037] Second sealing groove 91 and second sealing ring 92 . [Specific implementation method]

[0038] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0040] See also Figures 1 to 6As shown, the utility model is a prefabricated temperature-sensing fire extinguishing device 100, which includes an outer shell 1, a first blocking member 2 blocked at one end of the outer shell 1, a second blocking member 3 blocked at the other end of the outer shell 1, a piston member 4, a bursting membrane 5 and an aerosol triggering assembly 6, wherein the first blocking member 2 is connected to a nozzle 7, so as to use the nozzle 7 to spray the fire extinguishing agent;

[0041] The piston member 4 is movably arranged in the outer shell 1 and is located at one end close to the second blocking member 3. A triggering chamber 11 is formed between the piston member 4 and the second blocking member 3, and a fire extinguishing agent filling chamber 12 is formed between the piston member 4 and the first blocking member 2, wherein the triggering chamber 11 is used to provide a space for installation and gas production and pressurization for the aerosol triggering component 6, and the fire extinguishing agent filling chamber 12 is used to fill the fire extinguishing agent required for fire extinguishing; a spraying channel 21 is formed in the first blocking member 2 to connect the nozzle 7 with the fire extinguishing agent filling chamber 12, and the bursting membrane 5 is arranged in the spraying channel 21. When the aerosol triggering component 6 is not ignited, the The bursting diaphragm 5 can block the spraying channel 21 to ensure that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 will not leak out; and when the aerosol triggering component 6 is ignited and reaches a certain pressure, the bursting diaphragm 5 will rupture, thereby releasing the fire extinguishing agent in the fire extinguishing agent filling chamber 12; the aerosol triggering component 6 is arranged in the triggering chamber 11, and the aerosol triggering component 6 has a thermal wire 61 extending outside the second blocking member 3, so that when a fire occurs, the thermal wire 61 can be ignited, and the thermal wire 61 is used to trigger the aerosol triggering component 6 to produce gas and increase pressure, so that the piston member 4 can push the fire extinguishing agent in the fire extinguishing agent filling chamber 12 out.

[0042] The utility model movably arranges a piston member 4 in an outer shell 1, and uses the piston member 4 as a boundary, forms a triggering chamber 11 on one side of the piston member 4, and forms a fire extinguishing agent filling chamber 12 on the other side of the piston member 4, and simultaneously arranges an aerosol triggering assembly 6 in the triggering chamber 11, so that in specific operation, the aerosol triggering assembly 6 can be used to produce gas and increase pressure to drive the piston member 4 to move, and the piston member 4 can push the fire extinguishing agent in the fire extinguishing agent filling chamber 12 to break the bursting membrane 5 during the movement, thereby releasing the fire extinguishing agent in the fire extinguishing agent filling chamber 12; because the aerosol triggering assembly 6 and the fire extinguishing agent are separated by the piston member 4, the aerosol triggering assembly 6 will only push the piston member 4 forward after being triggered, and will not contact the fire extinguishing agent, thereby avoiding adverse effects on the fire extinguishing effect of the fire extinguishing agent.

[0043] In some embodiments of the present invention, the prefabricated temperature-sensing fire extinguishing device 100 also includes a one-way cooling valve 8, which is arranged on the piston member 4 and can move with the piston member 4; when the aerosol triggering assembly 6 drives the piston member 4 to move, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 is sprayed out through the nozzle 7, the one-way cooling valve 8 reversely inputs the fire extinguishing agent into the triggering chamber 11 for cooling.

[0044] Since the aerosol triggering component 6 will generate high temperature after being triggered, if no cooling treatment is performed, it may cause the device to be damaged due to overheating or cause other substances to catch fire; for this reason, the utility model cleverly arranges a one-way cooling valve 8 on the piston member 4, so that when the aerosol triggering component 6 drives the piston member 4 to move and release the fire extinguishing agent in the fire extinguishing agent filling chamber 12, the fire extinguishing agent can also be reversely input into the triggering chamber 11 through the one-way cooling valve 8, so as to use the fire extinguishing agent to cool the triggering chamber 11, thereby effectively preventing the device from being damaged due to overheating or causing other substances to catch fire.

[0045] In some embodiments of the present invention, please refer to Figure 3-Figure 6 As shown, the one-way cooling valve 8 includes a valve body 81, a push rod 82, a spring 83 and a sealing ring 84;

[0046] The valve body 81 is provided with a conveying channel 811 running through it, so as to realize the reverse input of the fire extinguishing agent into the triggering chamber 11 by means of the conveying channel 811; a support portion 812 is provided at one end of the valve body 81 at a position in front of the conveying channel 811, and the support portion 812 will not block the conveying channel 811; the push rod 82 passes through the conveying channel 811 and the support portion 812, and the push rod 82 is provided with a first limiting portion 821 at one end close to the aerosol triggering assembly 6, and a second limiting portion 822 at one end of the push rod 82 away from the aerosol triggering assembly 6, and the first limiting portion 821 and the second limiting portion 822 are provided. The second limiting portion 822 mainly plays a limiting role; the blocking ring 84 is sleeved on the push rod 82 near the first limiting portion 821. Under normal circumstances, the blocking ring 84 blocks the conveying channel 811, so that under normal circumstances, the fire extinguishing agent in the fire extinguishing agent filling chamber 12 cannot be reversely input into the initiation chamber 11, so as to ensure that it will not affect the ignition of the aerosol initiation component 6 when a fire occurs; the spring 83 is sleeved on the push rod 82 near the second limiting portion 822, and one end of the spring 83 is against the second limiting portion 822, and the other end of the spring 83 is against the support portion 812. When the one-way cooling valve 8 is in operation, when no fire occurs, the blocking ring 84 will block the delivery channel 811 under the action of the spring 83, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 cannot be reversely input into the triggering chamber 11; when a fire occurs, the aerosol triggering assembly 6 will produce gas and increase pressure after being triggered, and drive the piston member 4 to push the fire extinguishing agent forward to rupture the bursting membrane 5, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 can be sprayed out through the nozzle 7. At the same time, in the process of the piston member 4 pushing the fire extinguishing agent forward, the push rod 82 will drive the blocking ring 84 to disengage from the delivery channel 811 under the action of the reverse force, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 can be reversely input into the triggering chamber 11.

[0047] In some embodiments of the utility model, the piston member 4 includes a piston body 41 movably arranged in the outer shell 1 and a first sealing ring 42; a first sealing groove 411 is arranged on the piston body 41 around the circumferential direction, the first sealing ring 42 is sleeved in the first sealing groove 411, and the first sealing ring 42 is pressed against the inner wall of the outer shell 1, so that it can ensure that the piston member 4 can move in the outer shell 1, and can also play a good isolation effect between the triggering chamber 11 and the fire extinguishing agent filling chamber 12, ensuring that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 will not enter the triggering chamber 11 from the gap between the outer wall of the piston body 41 and the inner wall of the outer shell 1.

[0048] Furthermore, the piston body 41 is formed with an insertion cavity 412 connected to the trigger chamber 11 on the side facing the aerosol trigger assembly 6. The insertion cavity 412 is also a part of the trigger chamber 11. The free end of the aerosol trigger assembly 6 extends into the insertion cavity 412. This can reduce the space occupied by the trigger chamber 11, making the structure of the entire prefabricated temperature sensing fire extinguishing device 100 more compact, which is conducive to the miniaturization of the prefabricated temperature sensing fire extinguishing device 100.

[0049] In some embodiments of the utility model, the aerosol triggering assembly 6 includes a storage shell 62 installed on the inner side of the second sealing member 3 and a hot aerosol 63 arranged in the storage shell 62. The storage shell 62 can protect the hot aerosol 63. The storage shell 62 is provided with a plurality of connecting openings 621 on the side facing the piston member 4, which connect the interior of the storage shell 62 with the triggering chamber 11, so that the gas generated after the hot aerosol 63 is triggered can enter the triggering chamber 11 through the connecting openings 621; the thermistor 61 extends to the position where the hot aerosol 63 is located, so that after the thermistor 61 is ignited, it can trigger the hot aerosol 63, so that the hot aerosol 63 can produce gas and increase pressure to drive the piston member 4 to move.

[0050] In some embodiments of the present invention, the first blocking member 2 and the second blocking member 3 are both detachably connected to the outer shell 1. For example, when the present invention is implemented, the first blocking member 2 and the second blocking member 3 can be screwed to the outer shell 1 in a threaded manner.

[0051] In some embodiments of the utility model, the insertion ends of the first blocking member 2 and the second blocking member 3 are both provided with a second sealing groove 91, and a second sealing ring 92 is provided in the second sealing groove 91. The second sealing ring 92 is pressed against the inner wall of the outer shell 1 to achieve a sealing effect, thereby ensuring that the fire extinguishing agent in the fire extinguishing agent filling cavity 12 will not leak out from the gap between the outer wall of the first blocking member 2 and the inner wall of the outer shell 1, and at the same time ensuring that the gas generated by the hot aerosol 63 will not escape from the gap between the outer wall of the second blocking member 3 and the inner wall of the outer shell 1.

[0052] In some embodiments of the present invention, mounting brackets 13 are provided at both ends of the outer shell 1, so that the entire prefabricated temperature-sensing fire extinguishing device 100 can be installed at a desired position by using the mounting brackets 13.

[0053] The working principle of the prefabricated temperature-sensing fire extinguishing device 100 of the present invention when a fire occurs is as follows: when a fire occurs, the thermistor wire 61 will be ignited first, and after being ignited, the thermistor wire 61 will trigger the aerosol triggering assembly 6, so that the hot aerosol 63 of the aerosol triggering assembly 6 produces gas and increases pressure, and pushes the piston member 4 to one side of the fire extinguishing agent filling chamber 12, so that the entire prefabricated temperature-sensing fire extinguishing device 100 is pressurized; when the pressure is increased to the set pressure, the bursting membrane 5 will rupture, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 is sprayed out through the nozzle 7, thereby achieving a fire extinguishing effect; at the same time, in the process of the piston member 4 pushing the fire extinguishing agent forward, the push rod 82 of the one-way cooling valve 8 will drive the blocking ring 84 to separate from the conveying channel 811 under the action of the reverse force, so that the fire extinguishing agent in the fire extinguishing agent filling chamber 12 can be reversely input into the triggering chamber 11, so as to achieve cooling and cooling of the triggering chamber 11, thereby effectively preventing the device from being damaged due to overheating or causing fires of other substances.

[0054] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A prefabricated temperature-sensitive fire extinguishing device, comprising an outer shell, a first blocking member blocking one end of the outer shell, and a second blocking member blocking the other end of the outer shell, wherein the first blocking member is connected to a nozzle; characterized in that: Also includes a piston member, a bursting disk, and an aerosol initiation assembly; The piston member is movably arranged in the outer shell and is located at one end close to the second blocking member, a triggering chamber is formed between the piston member and the second blocking member, and a fire extinguishing agent filling chamber is formed between the piston member and the first blocking member; a spraying channel that connects the nozzle with the fire extinguishing agent filling chamber is formed in the first blocking member, and the bursting membrane is arranged in the spraying channel; the aerosol triggering assembly is arranged in the triggering chamber, and the aerosol triggering assembly has a thermal sensitive line extending outside the second blocking member.

2. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: It also includes a one-way cooling valve, which is arranged on the piston member; when the aerosol triggering assembly drives the piston member to move, so that the fire extinguishing agent in the fire extinguishing agent filling chamber is sprayed out through the nozzle, the one-way cooling valve reversely inputs the fire extinguishing agent into the triggering chamber for cooling.

3. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 2, characterized in that: The one-way cooling valve comprises a valve body, a push rod, a spring and a sealing ring; A conveying channel is provided through the valve body, and a support portion is provided at one end of the valve body at a position in front of the conveying channel; the push rod passes through the conveying channel and the support portion, and a first limiting portion is provided at one end of the push rod close to the aerosol triggering component, and a second limiting portion is provided at one end of the push rod away from the aerosol triggering component; the sealing ring is sleeved on the push rod at a position close to the first limiting portion, and under normal circumstances, the sealing ring blocks the conveying channel; the spring is sleeved on the push rod at a position close to the second limiting portion, and one end of the spring abuts against the second limiting portion, and the other end of the spring abuts against the support portion.

4. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: The piston member comprises a piston body movably arranged in an outer shell and a first sealing ring; a first sealing groove is arranged on the piston body around the circumferential direction, the first sealing ring is sleeved in the first sealing groove, and the first sealing ring is pressed tightly against the inner wall of the outer shell.

5. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 4, characterized in that: The piston body is formed with an insertion cavity communicated with the triggering chamber on a side facing the aerosol triggering component, and the free end of the aerosol triggering component extends into the insertion cavity.

6. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: The aerosol triggering assembly includes a storage shell installed on the inner side of the second sealing member and a hot aerosol arranged in the storage shell. The storage shell is provided with a plurality of connecting openings on a side facing the piston member to connect the interior of the storage shell with the triggering chamber; the thermal sensitive line extends to the position where the hot aerosol is located.

7. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: The first blocking member and the second blocking member are both detachably connected to the outer shell.

8. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: The insertion ends of the first blocking member and the second blocking member are both provided with a second sealing groove, and a second sealing ring is provided in each of the second sealing grooves, and the second sealing ring is pressed tightly against the inner wall of the outer shell.

9. A prefabricated temperature-sensitive fire extinguishing device as claimed in claim 1, characterized in that: Both ends of the outer shell are provided with mounting brackets.

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