Air bag type non-pressure-storage fire extinguishing device

Abstract

The utility model discloses an air bag type non-pressure-storage fire extinguishing device, and belongs to the technical field of fire fighting. Comprising a first end cover, a shell and a second end cover which are sequentially connected, a gas production assembly and an air bag assembly are arranged in the first end cover, the air bag assembly comprises an air bag, an air bag fixing frame and an air bag cover plate which are sequentially connected, and a fire extinguishing agent is arranged in the shell. The air bag replaces a piston to push the fire extinguishing agent to be sprayed, the requirement for high smoothness of the inner wall of a piston cylinder is avoided, and the production and manufacturing cost of enterprises is reduced; through the design of the spiral flow guide groove, no-residue spraying of chemicals can be achieved, waste of the chemicals is avoided, and the fire extinguishing effect of the device is improved; by means of the air permeability design of the air bag, a large number of solid particles generated by the gas generating agent in the gas generating process are filtered out, the corrosive influence of the particles on electronic elements is avoided, meanwhile, the air bag plays a role in filtering high-pressure gas generated by the gas generating agent, and a clean gas source is provided for driving a fire extinguishing agent.

Description

Technical Field

[0001] The utility model relates to an air bag type non-pressure storage fire extinguishing device, belonging to the technical field of fire fighting. Background Art

[0002] Existing liquid fire extinguishing devices are divided into pressure storage type fire extinguishing devices and non-pressure storage type fire extinguishing devices according to whether there is pressure in the storage device. The internal storage pressure of the pressure storage type fire extinguishing device will gradually decrease with the extension of storage time, causing failure; the existing airbag type fire extinguishing device technology uses a puncture needle to puncture the airbag, but it is easy to cause the airbag to be punctured when it is not fully deployed, resulting in a large amount of fire extinguishing agent remaining inside the device. There is also an airbag type fire extinguishing device that uses a piston to push the fire extinguishing agent to spray, but it has high finish requirements on the inner wall of the piston cylinder and is relatively expensive. Therefore, it is necessary to develop an airbag type non-pressure storage fire extinguishing device that overcomes the above shortcomings. Utility Model Content

[0003] The utility model aims at the deficiencies existing in the above-mentioned prior art and provides an air bag type non-pressure storage fire extinguishing device.

[0004] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without making creative work belong to the protection scope of the utility model. The preferred implementation of the utility model will be described in more detail below with reference to the drawings. Although the preferred implementation of the utility model is shown in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the implementation described here. On the contrary, these implementations are provided to make the utility model more thorough and complete, and to fully convey the scope of the utility model to those skilled in the art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An airbag type non-pressure storage fire extinguishing device comprises a first end cover, a shell and a second end cover connected in sequence, wherein a gas producing component and an airbag component are arranged in the first end cover, the airbag component comprises an airbag, an airbag fixing frame and an airbag cover plate connected in sequence, a fire extinguishing agent is arranged in the shell, a spiral guide groove is arranged between the fire extinguishing agent and the shell, and the airbag cover plate seals and separates the first end cover from the fire extinguishing agent.

[0007] Furthermore, the side of the airbag cover plate in contact with the airbag is in the shape of a groove.

[0008] Furthermore, a weakening line is provided on the airbag cover.

[0009] Furthermore, the gas generating assembly includes a gas generating agent, an explosive and an electric starting assembly.

[0010] Furthermore, the material of the airbag cover is modified thermoplastic elastomer.

[0011] Furthermore, the airbag is made of breathable material.

[0012] Furthermore, the airbag breathable material is coated with a chloroprene rubber or silicone rubber coating.

[0013] Furthermore, the airbag is formed by sewing, bonding or integral molding.

[0014] Furthermore, the airbag is made of nylon fabric.

[0015] Furthermore, the second end cover is provided with a nozzle.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The present invention adopts an air bag to replace the piston to promote the spraying of the fire extinguishing agent, thereby avoiding the high finish requirement of the inner wall of the piston cylinder and reducing the production and manufacturing cost of the enterprise; through the design of the spiral guide groove, the agent can be sprayed without residue, avoiding the waste of the agent and improving the fire extinguishing effect of the device; through the air permeability design of the air bag, a large number of solid particles generated by the gas generating agent in the process of generating gas are filtered out, avoiding the corrosive effect of the particles on electronic components, and at the same time, the air bag plays a filtering role on the high-pressure gas generated by the gas generating agent, providing a clean gas source for driving the fire extinguishing agent; since the gas generated by the gas generating agent is limited, in order to ensure that the air bag can be fully opened and the gas can be passed through to achieve gas passing Filter, control the air permeability of the airbag by using fabrics of different materials or coatings. During the inflation and deployment of the airbag, the part with a large moving stroke uses a fabric with a low air permeability, and the part with a small moving stroke uses a fabric with a high air permeability. The airbag is formed by combining high-performance breathable fabric with low-air permeability fabric through one-piece molding, sewing, bonding, hot pressing and other methods to control the air permeability of the airbag. The groove set on the contact side of the airbag cover is used as a weakening line to ensure that the airbag can open the airbag cover, so that the airbag cover is squeezed during the inflation process to crack along the weakening line, thereby increasing the airbag deployment rate, shortening the time for the fire extinguishing agent to be sprayed, and improving reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 for Figure 1 A partial enlarged view of part A.

[0020] In the figure, 1, first end cover; 2, gas generating assembly; 21, gas generating agent; 22, explosive powder; 23, electric starting assembly; 4, airbag assembly; 41, airbag fixing frame; 42, airbag cover; 43, airbag; 5, shell; 6, spiral guide groove; 7, fire extinguishing agent; 8, second end cover. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] like Figure 1-Figure 2 As shown, Figure 1 As shown, the airbag type non-pressure storage fire extinguishing device of this embodiment includes a first end cover 1, a shell 5 and a second end cover 8 connected in sequence. The first end cover 1 is provided with a gas producing component 2 and an airbag component 4. The airbag component 4 includes an airbag 43, an airbag fixing frame 41 and an airbag cover plate 42 connected in sequence. The shell 5 is provided with a fire extinguishing agent 7. A spiral guide groove 6 is provided between the fire extinguishing agent 7 and the shell 5. The airbag cover plate 42 seals and separates the first end cover 1 from the fire extinguishing agent 7.

[0023] The side of the airbag cover 42 that contacts the airbag 43 is in the shape of a groove.

[0024] The airbag cover 42 is provided with a weakening line.

[0025] The gas generating component 2 includes a gas generating agent 21 , an explosive 22 and an electric starting component 23 .

[0026] The material of the airbag cover 42 is a modified thermoplastic elastomer, which may be specifically one of thermoplastic polyester elastomer, thermoplastic dynamic vulcanized rubber, polyolefin thermoplastic elastomer, and styrene thermoplastic elastomer.

[0027] The airbag 43 is made of air-permeable material.

[0028] The air-permeable material of the airbag 43 is coated with a chloroprene rubber or silicone rubber coating.

[0029] The airbag 43 is formed by sewing, bonding or integral molding.

[0030] The airbag 43 is made of nylon fabric. The part with a long moving stroke during the inflation of the airbag 4 is made of a material with low air permeability, and the part with a short moving stroke is made of a material with high air permeability.

[0031] The second end cover 8 is provided with a nozzle.

[0032] During operation, after the trigger current signal passes through the electric start component 23, the electric start component 23 ignites the explosive 22 and the gas generating agent 21. The gas generating agent 21 will release a large amount of gas and heat during the combustion process, and the generated gas will expand the airbag 43; during the expansion of the airbag 43, the airbag cover plate 42 is first squeezed, and after the airbag cover plate 42 is crushed along the weakening line, the airbag 43 continues to squeeze the fire extinguishing agent 7, and the pressure of the closed cavity in the device increases. When the pressure reaches the limit release pressure, the sealing film of the airbag 43 breaks, and the airbag 43 pushes the fire extinguishing agent 7 out of the device, spraying out most of the fire extinguishing agent 7 in the device. After the airbag 43 is fully expanded, the gas generated by the gas generating agent 21 will pass through the airbag 43, and the airbag 43 will filter the gas. The fire extinguishing agent 7 absorbs the heat generated by the gas generating agent 21 and vaporizes. The gas filtered by the airbag 43 will be vaporized and pushed out of the device together with the fire extinguishing agent 7 that has not yet vaporized through the spiral guide groove 6, so as to achieve the complete spraying of the fire extinguishing agent 7.

[0033] The present invention adopts an air bag 43 to replace the piston to drive the fire extinguishing agent 7 to spray, thereby avoiding the high finish requirement of the inner wall of the piston cylinder and reducing the production and manufacturing cost of the enterprise; through the design of the spiral guide groove 6, the fire extinguishing agent 7 can be sprayed without residue, avoiding the waste of the fire extinguishing agent 7 and improving the fire extinguishing effect of the device; through the air permeability design of the air bag 43, a large amount of solid particles generated by the gas generating agent 21 in the process of generating gas are filtered out, avoiding the corrosive effect of the particles on electronic components, and at the same time, the air bag 43 plays a filtering role on the high-pressure gas generated by the gas generating agent 21, providing a clean gas source for driving the fire extinguishing agent 7; since the gas generated by the gas generating agent 21 is limited, in order to ensure that the air bag 43 can be fully opened and the gas can be passed through to achieve gas filtering The air permeability of the airbag 43 is controlled by using fabrics of different materials or coatings. During the inflation and deployment of the airbag 43, the part with a large moving stroke uses a fabric with a low air permeability, and the part with a small moving stroke uses a fabric with a high air permeability. The airbag 43 is formed by combining high-performance breathable fabric with low-air permeability fabric through one-piece molding, sewing, bonding, hot pressing and other methods to control the air permeability of the airbag 43. The grooves provided on the contact side of the airbag cover 42 and the airbag 43 are used as weakening lines to ensure that the airbag 43 can open the airbag cover 42, so that the airbag cover 42 is cracked along the weakening line by squeezing during the expansion of the airbag 43, thereby increasing the deployment rate of the airbag 43, shortening the time for the fire extinguishing agent 7 to be sprayed, and improving reliability and safety.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airbag type non-pressure storage fire extinguishing device, comprising a first end cover (1), a housing (5) and a second end cover (8) connected in sequence, characterized in that: The first end cover (1) is provided with a gas generating assembly (2) and an airbag assembly (4), the airbag assembly (4) comprising an airbag (43), an airbag fixing frame (41) and an airbag cover plate (42) connected in sequence, the shell (5) is provided with a fire extinguishing agent (7), a spiral guide groove (6) is provided between the fire extinguishing agent (7) and the shell (5), and the airbag cover plate (42) seals and separates the first end cover (1) and the fire extinguishing agent (7).

2. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The contact side of the airbag cover plate (42) and the airbag (43) is in the shape of a groove.

3. The airbag type non-pressure storage fire extinguishing device according to claim 1 or 2, characterized in that: The airbag cover plate (42) is provided with a weakening line.

4. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The gas generating component (2) comprises a gas generating agent (21), an explosive powder (22) and an electric starting component (23).

5. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The material of the airbag cover plate (42) is modified thermoplastic elastomer.

6. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The air bag (43) is made of air-permeable material.

7. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The air-permeable material of the airbag (43) is coated with a chloroprene rubber or silicone rubber coating.

8. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The airbag (43) is formed by sewing, bonding or integral molding.

9. The airbag type non-pressure storage fire extinguishing device according to claim 1 is characterized in that: The airbag (43) is made of nylon fabric.

10. The airbag type non-pressure storage fire extinguishing device according to claim 1, characterized in that: The second end cover (8) is provided with a nozzle.

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