CN218220867U

CN218220867U - Automatic fire extinguishing device for producing gas by aerosol

Info

Publication number: CN218220867U
Application number: CN202121156455.4U
Authority: CN
Inventors: 周晓蓉; 王杰; 周斌; 王鑫; 谢彬
Original assignee: Zhejiang Huashen Fire Fighting Technology Co ltd
Current assignee: Zhejiang Huashen Fire Fighting Technology Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2023-01-06
Anticipated expiration: 2031-05-27

Abstract

The utility model relates to the technical field of aerosol fire extinguishing, and discloses an automatic fire extinguishing device using aerosol to generate gas, which comprises a tank body (1), an aerosol fire extinguishing agent (2) and a perfluorohexanone fire extinguishing fluid (3) which is arranged inside the tank body (1) and used for cooling the aerosol fire extinguishing agent (2); an upper cover (4) and a lower cover (5) for sealing the tank body (1) are respectively fixedly installed at two ends of the tank body (1), a gas production bin (6) is arranged on one side, facing the tank body (1), of the upper cover (4), the gas production bin (6) is filled with aerosol fire extinguishing agent (2), and a spray head (7) is arranged on the lower cover (5); the device adopts the combined action of the aerosol fire extinguishing agent and the perfluorohexanone fire extinguishing liquid to extinguish fire, the perfluorohexanone fire extinguishing liquid cools the ignited aerosol fire extinguishing agent, and the high temperature carried by the aerosol fire extinguishing agent gasifies the perfluorohexanone fire extinguishing liquid, so that the fire extinguishing efficiency is high; and the device has compact and small integral structure, is safer and more reliable, and has wider application range and field.

Description

Automatic fire extinguishing device utilizing aerosol to generate gas

Technical Field

The utility model relates to an aerosol fire extinguishing technology field, concretely relates to utilize automatic fire extinguishing device of gas production of aerosol.

Background

The conventional fire extinguishing device special for the new energy automobile on the market usually adopts dry powder, heptafluoropropane and aerosol as fire extinguishing media, and the dry powder fire extinguishing device has the defects of fire control, easy afterburning and difficult treatment by one wolf in site after spraying; the fire extinguishing device special for heptafluoropropane needs pressure storage and needs a pipeline connected in a battery box, so that the installation is inconvenient and great potential safety hazards exist.

Aerosol fire extinguishing is a novel fire extinguishing technology developed in recent years, and an intelligent fire extinguishing device (with an authorized bulletin number of CN 110227221A) for a lithium battery box of an electric vehicle in the prior art adopts a perfluorohexanone fire extinguishing agent, wherein the perfluorohexanone fire extinguishing agent has the advantages of cleanness, no toxicity, no harm to human bodies and the like, and is used as a green environment-friendly fire extinguishing agent; the perfluorohexanone is colorless, tasteless and transparent liquid at normal temperature, the evaporation heat of the perfluorohexanone is only 1/25 of that of water, and the vapor pressure of the perfluorohexanone is 25 times that of the water, so that the perfluorohexanone is easy to vaporize and exists in a gaseous state, and can achieve the fire extinguishing effect by means of heat absorption. However, the fire extinguisher needs to be provided with a power device for driving fire extinguishing, an external power supply supplies power to the power device, and the power device pushes the piston to discharge the fire extinguisher, so that the structure is relatively complex.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an automatic fire extinguishing device utilizing aerosol to generate gas, the device adopts the combined action of an aerosol fire extinguishing agent and a perfluoro hexanone fire extinguishing liquid to extinguish fire, the perfluoro hexanone fire extinguishing liquid cools the ignited aerosol fire extinguishing agent, the high temperature carried by the aerosol fire extinguishing agent gasifies the perfluoro hexanone fire extinguishing liquid, and the fire extinguishing efficiency is high; and the device has compact and small integral structure, is safer and more reliable, and has wider application range and field.

In order to achieve the above object, the present invention provides the following technical solutions:

an automatic fire extinguishing device utilizing aerosol to generate gas comprises a tank body, an aerosol fire extinguishing agent and perfluorohexanone fire extinguishing liquid which is arranged in the tank body and used for cooling the aerosol fire extinguishing agent, wherein the perfluorohexanone fire extinguishing liquid cools the ignited aerosol fire extinguishing agent, the high temperature carried by the aerosol fire extinguishing agent enables the perfluorohexanone fire extinguishing liquid to be gasified, the gasified perfluorohexanone self has a good fire extinguishing effect, the aerosol self also has a fire extinguishing function, the device has a synergistic fire extinguishing function, and the fire extinguishing efficiency is high; an upper cover and a lower cover for sealing the tank body are respectively fixedly arranged at two ends of the tank body, one side of the upper cover facing the tank body is provided with a gas production bin, aerosol fire extinguishing agent is filled in the gas production bin, and the lower cover is provided with a spray head.

Preferably, the upper cover is provided with a detector for detecting fire and a starter for igniting aerosol fire extinguishing agent; one side of the upper cover communicated with the gas production bin is provided with a pressure relief opening, and a pressure relief valve is arranged in the pressure relief opening.

Preferably, the spray head is arranged on the side surface of the lower cover, the gas outlet direction of the spray head and the gas outlet direction of the gas production bin form an L-shaped route, the L-shaped operation route enables the sprayed aerosol to be fully contacted with the perfluorohexanone, the perfluorohexanone is completely gasified, and the sprayed aerosol and the perfluorohexanone are mixed more uniformly.

Preferably, one side of the lower cover facing the tank body is provided with a buffer piece, the buffer piece is provided with a through hole facing the direction of the spray head so as to facilitate the air flow to pass through, and the bottom of the buffer piece is provided with an elastic piece.

Preferably, the lower cover is provided with a limiting piece for limiting the movement of the buffer piece, the limiting piece and the inner wall of the lower cover form a movable groove, and the buffer piece is inserted in the movable groove; the movable groove is internally provided with a limiting groove, the buffer part is provided with a limiting protruding part matched with the limiting groove, and the limiting protruding part moves in the limiting groove.

Preferably, the buffer piece and the top of the movable groove are provided with spring pieces.

Preferably, at least one group of baffle plates are further arranged in the buffer part, and two or more groups of baffle plates are arranged in a staggered mode; and the baffle plate is provided with vent holes, the aperture of the vent hole of the baffle plate positioned above is larger than that of the vent hole of the baffle plate positioned below, so that the airflow is sequentially blocked under the action of the baffle plate, and the function of promoting the aerosol and the gasified perfluorohexanone to be uniformly mixed is also realized.

Preferably, the gas production bin is provided with a gas outlet; the air outlet holes positioned on the side wall of the gas production bin are arranged in a spiral way; the spiral blade is movably arranged outside the gas production bin through an annular bearing so as to rotate around the gas production bin under the action of gas flow.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an automatic fire extinguishing device adopts aerosol fire extinguishing agent and perfluor hexanone fire extinguishing liquid combined action to put out a fire, and perfluor hexanone fire extinguishing liquid cools down to the aerosol fire extinguishing agent that ignites, and the high temperature that the aerosol fire extinguishing agent carried makes perfluor hexanone fire extinguishing liquid gasification, and gasified perfluor hexanone self has good fire extinguishing effect, and the hot aerosol self also has the function of putting out a fire, plays the function of putting out a fire in coordination in this device, and fire extinguishing efficiency is high;

the perfluorohexanone is stored in a liquid state, and pressure leakage is avoided by non-pressure storage, and the pressure is not required to be frequently detected manually, so that the labor cost of fire-fighting detection is greatly reduced;

the device has compact and small integral structure, is safer and more reliable, and has wider application range and field.

Drawings

Fig. 1 is a front view of an automatic fire extinguishing apparatus according to embodiment 1.

Fig. 2 is a cross-sectional view of fig. 1 at cross section AA.

Fig. 3 is a sectional view of the automatic fire extinguishing apparatus according to embodiment 2.

Fig. 4 is an enlarged view of fig. 3 at a.

Fig. 5 is a sectional view of the automatic fire extinguishing apparatus according to embodiment 3.

In the drawings: 1-tank body, 2-aerosol fire extinguishing agent, 3-perfluorohexanone fire extinguishing liquid, 4-upper cover, 401-pressure relief opening, 5-lower cover, 6-gas generation bin, 601-air outlet, 7-spray head, 8-buffer part, 801-limit bulge, 9-elastic part, 10-limit part, 101-movable groove, 102-limit groove, 11-spring part, 12-baffle plate and 13-helical blade.

Detailed Description

Example 1: the utility model discloses a preferred embodiment provides an utilize automatic fire extinguishing device of gas production of aerosol, including jar body 1, aerosol fire extinguishing agent 2 and adorn in jar body 1 inside and be used for carrying out the perfluorohexanone fire extinguishing fluid 3 of cooling to aerosol fire extinguishing agent 2, perfluorohexanone fire extinguishing fluid 3 cools down to the aerosol fire extinguishing agent 2 that ignites, the high temperature that aerosol fire extinguishing agent 2 carried makes perfluorohexanone fire extinguishing fluid 3 gasification, gasified perfluorohexanone self has good fire extinguishing effect, thermosol self also has the function of putting out a fire, play the function of putting out a fire in coordination in this device, both coacts and puts out a fire, fire extinguishing efficiency is high;

an upper cover 4 and a lower cover 5 for sealing the tank body 1 are respectively fixedly installed at two ends of the tank body 1, one side of the upper cover 4 facing the tank body 1 is provided with a gas production bin 6, the gas production bin 6 is provided with an air outlet 601, the gas production bin 6 is filled with an aerosol fire extinguishing agent 2, and a sealing film or a partition plate is arranged between the upper cover 4 and the tank body 1 to isolate the perfluorohexanone fire extinguishing fluid 3; the lower cover 5 is provided with a spray head 7, the spray head 7 is arranged on the side surface of the lower cover 5, the air outlet direction of the spray head 7 and the air outlet direction of the air production bin 6 form an L-shaped route, aerosol sprayed by the ignited aerosol fire extinguishing agent 2 is contacted with perfluorohexanone, and the L-shaped operation route ensures that the aerosol and the perfluorohexanone are fully contacted, ensures that the perfluorohexanone is completely gasified, and ensures that the sprayed aerosol and the perfluorohexanone are mixed more uniformly; in the test, compared with the existing aerosol fire extinguishing agent, the fire extinguishing efficiency of the fire extinguishing apparatus of the embodiment is improved by 15-18% (compared with the time for completely extinguishing the fire under the same fire condition); and compared with aerosol and perfluorohexanone which are sprayed out along a straight line, the fire extinguishing efficiency is improved by 3-10%.

The upper cover 4 is provided with a detector for detecting fire and a starter for igniting the aerosol fire extinguishing agent 2; and a pressure relief opening 401 is arranged on one side of the upper cover 4 communicated with the gas production bin 6, and a pressure relief valve is arranged in the pressure relief opening 401.

Example 2: the utility model relates to a preferred embodiment provides an utilize automatic fire extinguishing device of gas production of aerosol, its difference with above-mentioned embodiment only lies in: the side of the lower cover 5 facing the tank body 1 is provided with a buffer member 8, the side of the buffer member 8 facing the direction of the spray head 7 is provided with a through hole for passing air, and the bottom of the buffer member 8 is provided with an elastic member 9 which is an elastic rubber pad or a spring.

The lower cover 5 is provided with a limiting piece 10 for limiting the movement of the buffer piece 8, the limiting piece 10 and the inner wall of the lower cover 5 form a movable groove 101, and the buffer piece 8 is inserted in the movable groove 101; the movable groove 101 is provided with a limit groove 102, the buffer member 8 is provided with a limit projection 801 matched with the limit groove 102, and the limit projection 801 moves in the limit groove 102.

Furthermore, the spring piece 11 is arranged at the tops of the buffer piece 8 and the movable groove 101, the spring piece 11 and the buffer piece 8 act together to reduce the impact of the ejected aerosol airflow on the lower cover 5, and the contact time of the ejected aerosol and the perfluorohexanone can be prolonged, so that the aerosol and the gasified perfluorohexanone are mixed more uniformly.

At least one group of baffle plates 12 are also arranged in the buffer member 8, and two or more groups of baffle plates 12 are arranged in a staggered manner; and the baffle plate 12 is provided with vent holes, the aperture of the vent hole of the baffle plate 12 positioned above is larger than that of the vent hole of the baffle plate 12 positioned below, so that the airflow is blocked sequentially under the action of the baffle plate 12, and the function of promoting the uniform mixing of the aerosol and the gasified perfluorohexanone is also realized.

In the test, the fire extinguishing efficiency of the fire extinguishing apparatus of the embodiment is improved by 3-5% compared with the fire extinguishing apparatus of the embodiment 1.

Example 3: the utility model relates to a preferred embodiment provides an utilize automatic fire extinguishing device of gas production of aerosol, its difference with above-mentioned embodiment only lies in: the air outlet holes 601 located on the side wall of the gas production bin 6 are arranged in a spiral mode, the spiral blades 13 are arranged outside the gas production bin 6, the spiral blades 13 can be of fan blade structures, the spiral blades 13 are movably installed outside the gas production bin 6 through annular bearings and rotate around the gas production bin 6 under the action of air flow, the sprayed aerosol is sprayed out in a spiral mode, the contact time of the sprayed aerosol and the perfluorohexanone is prolonged, the perfluorohexanone fully cools the aerosol, and the perfluorohexanone is gasified more completely.

Claims

1. An automatic fire extinguishing device utilizing aerosol to generate gas is characterized by comprising a tank body (1), an aerosol fire extinguishing agent (2) and a perfluorohexanone fire extinguishing liquid (3) which is arranged in the tank body (1) and used for cooling the aerosol fire extinguishing agent (2); an upper cover (4) and a lower cover (5) which are used for sealing the tank body (1) are respectively and fixedly installed at the two ends of the tank body (1), a gas production bin (6) is arranged on one side, facing the tank body (1), of the upper cover (4), the gas production bin (6) is filled with aerosol fire extinguishing agents (2), and a spray head (7) is arranged on the lower cover (5).

2. The automatic fire extinguishing device using aerosol to generate gas according to claim 1, wherein the upper cover (4) is provided with a detector for detecting a fire and a starter for igniting the aerosol fire extinguishing agent (2).

3. The automatic fire extinguishing device for producing gas by utilizing aerosol according to claim 2, wherein a pressure relief port (401) is arranged on one side of the upper cover (4) communicated with the gas production bin (6), and a pressure relief valve is arranged in the pressure relief port (401).

4. The automatic fire extinguishing device utilizing aerosol to generate gas according to claim 1, wherein the spray head (7) is arranged on the side surface of the lower cover (5), and the gas outlet direction of the spray head (7) and the gas generating direction of the gas generating bin (6) form an L-shaped route.

5. An automatic fire extinguisher using aerosol to generate gas according to claim 4, characterized in that the side of the lower cover (5) facing the tank (1) is provided with a buffer member (8), the buffer member (8) is provided with a through hole facing the nozzle (7) for passing the gas flow, and the bottom of the buffer member (8) is provided with an elastic member (9).

6. The automatic fire extinguishing device for producing gas by utilizing aerosol according to claim 5, wherein the lower cover (5) is provided with a limiting piece (10) for limiting the movement of the buffer piece (8), the limiting piece (10) and the inner wall of the lower cover (5) form a movable groove (101), and the buffer piece (8) is inserted in the movable groove (101); a limiting groove (102) is arranged in the movable groove (101), and a limiting protruding part (801) matched with the limiting groove (102) is arranged on the buffer piece (8).

7. A fire extinguisher using aerosol to generate gas according to claim 6, wherein the buffer member (8) and the top of the movable slot (101) are provided with a spring member (11).

8. An automatic fire extinguisher using aerosol to generate gas according to claim 5, characterized in that at least one set of baffle plates (12) is further arranged in the buffer member (8), and two or more sets of baffle plates (12) are arranged in a staggered manner.

9. The automatic fire extinguishing device for producing gas by using aerosol as claimed in claim 1, wherein the gas producing bin (6) is provided with a gas outlet (601); the air outlet holes (601) positioned on the side wall of the gas production bin (6) are arranged in a spiral way.

10. The automatic fire extinguishing device for producing gas by using aerosol according to claim 9, wherein a helical blade (13) is arranged outside the gas production bin (6), and the helical blade (13) is movably mounted outside the gas production bin (6) through an annular bearing so as to rotate around the gas production bin (6) under the action of gas flow.