CN106492379A - A kind of portable constant pressure water mist fire extinguisher - Google Patents

Abstract

The invention discloses a portable constant pressure fine water mist fire extinguisher, which comprises an outer cylinder body, a starting valve and a fine water mist spray gun. The outer cylinder body is equipped with fire extinguishing agent, and the fine water mist spray gun is connected with the water mist spray gun in the outer cylinder body through a pressure-resistant hose. The siphon tube is connected, and also includes an inner cylinder equipped with high-pressure gas. The inner cylinder is sleeved in the outer cylinder, and the starting valve is set at the opening of the inner cylinder. The outlet of the starting valve passes through the connected pressure reducer and constant pressure in turn. The output valve is connected to the inner cavity of the outer cylinder. After the start valve is opened, the high-pressure gas in the inner cylinder is output to a constant pressure through the pressure reducer and the constant pressure output valve, and enters the outer cylinder to deliver the fire extinguishing agent to the fine water mist spray gun at constant pressure. Extinguish fire with constant pressure water mist. The invention can make the fine water mist spray out at a continuous and constant pressure, the atomization quality of the fine water mist is high and stable, the fire extinguishing ability is strong, and the electrification safety is high, and the problem that the working pressure gradually decreases with the spraying of the fire extinguishing agent can be solved . It is friendly to the environment and can be used for fighting various electrical fires.

Description

A Portable Constant Pressure Water Mist Fire Extinguisher

technical field

The invention relates to a portable fire-fighting equipment, in particular to a fire extinguisher which can output fine water mist at a constant pressure, and uses pure water or water with a certain proportion of fire-extinguishing fluid as the fire-extinguishing agent.

Background technique

Today's portable fire extinguishers are mainly dry powder fire extinguishers, foam fire extinguishers and carbon dioxide fire extinguishers.

The dry powder fire extinguisher is filled with inorganic salt dry powder fire extinguishing agents. The fire extinguishing principle of dry powder fire extinguishing agent includes two kinds of physical and chemical. The physical principle is that the dry powder is sprayed onto the surface of combustibles to isolate oxygen and suffocate the flame. The chemical principle is that the dry powder inorganic salt decomposes, inhibits the free radicals or active groups of the combustion reaction at high temperature, and interrupts the combustion chain reaction. Dry powder fire extinguishers are suitable for conventional Class A and Class B combustible fires. The disadvantages are poor cooling effect, large environmental pollution, and difficult post-processing. The foam fire extinguisher is filled with foam-type fire extinguishing agent, which is sprayed out by the pressure of the foam nozzle to produce a large amount of foam, which covers the surface of the burning object and suffocates the flame. Therefore, foam fire extinguishing agents mainly rely on physical principles to extinguish fires. Foam fire extinguishers are mainly used to extinguish general Class B fires, such as oil products, grease, etc., but they cannot extinguish water-soluble Class B fires, such as fires caused by alcohol, ester, ketone, ether, etc., nor can they extinguish Class C fires and live fires. Class E fire. Carbon dioxide fire extinguishers are filled with carbon dioxide gas. After the carbon dioxide is ejected from the container, it quickly vaporizes into a gas, and uses the suffocation effect of the inert gas and a certain cooling effect to extinguish the fire. Carbon dioxide start extinguishers are mainly used for the first instance of valuable infrastructure, racks, instruments, electrical equipment and oil fires. The fire extinguishing ability of carbon dioxide fire extinguishers is average, and the gas is easy to escape in an open space, and there is a danger of suffocation to the human body at a high concentration. Now need to develop the fire extinguisher with stronger fire extinguishing ability and wider range of application.

Fine water mist is a new and efficient fire extinguishing technology. This technology uses a fine water mist spray gun to decompose the water flow into droplets with a diameter of Dv ₉₉ (99% of the particle size by volume) less than 1000 microns for fire extinguishing. The fire extinguishing efficiency can reach 5-10 times of traditional water spray technology. The fire extinguishing principle of water mist fire extinguishing technology includes flame cooling, oxygen barrier suffocation, attenuation of heat radiation, and kinetic action. Moreover, due to the small diameter of the fine water mist droplets, the isolation between the droplets and the large air gap greatly improves the electrification safety performance of the fine water mist, and is suitable for use in the prevention and control of electrified Class E fires.

Patent 200910068755.4 discloses a fire extinguisher, which fills the pressure storage cylinder with supersaturated carbon dioxide water accounting for 4/5 of the volume of the pressure storage cylinder at 2.5-4MPa. When spraying, because the gas is dissolved in the water, it has the function of precipitation and atomization, so the atomization effect is enhanced. However, the fire extinguisher does not adjust the pressure of the pressure medium. With the spraying of the fire extinguishing agent, the pressure in the fire extinguisher shell gradually decreases, and the atomization effect cannot be effectively guaranteed. Not only the fire extinguishing ability will be greatly reduced, but the safety of charging will also be significantly reduce.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a portable fire extinguisher that sprays fine water mist at constant pressure, which can make the fine water mist spray out at a continuous and constant pressure, and the atomization quality of the fine water mist is high. And stable, strong fire extinguishing ability, high electrification safety, can solve the problem that the working pressure gradually decreases with the spraying of fire extinguishing agent. The fire extinguisher can directly use pure water as a fire extinguishing agent, and can also use water added with fire extinguishing liquid as a fire extinguishing agent. , B, C, especially E electrical fire fighting.

In order to solve the problems of the technologies described above, the technical solution proposed by the present invention is:

A portable constant pressure water mist fire extinguisher, comprising a fire extinguisher body, the fire extinguisher body includes an outer cylinder, a start valve and a fine water mist spray gun, the outer cylinder is equipped with a fire extinguishing agent, and the water mist spray gun passes through the The pressure-resistant hose communicates with the siphon pipe provided in the outer cylinder, and also includes an inner cylinder equipped with high-pressure gas, the inner cylinder is sleeved in the outer cylinder, and the activation valve is set at the opening of the inner cylinder , the outlet of the starting valve is connected to the inner cavity of the outer cylinder through the connected pressure reducer and constant pressure output valve in turn. After the starting valve is opened, the high-pressure gas in the inner cylinder is output to a constant pressure through the pressure reducer and the constant pressure output valve. Entering the outer cylinder, the fire extinguishing agent is delivered to the fine water mist spray gun at constant pressure to realize constant pressure fine water mist fire extinguishing.

As a further improvement of the above technical solution:

Preferably, a pressure gauge is provided in the middle of the activation valve, a pressure handle is provided in the upper part of the activation valve, and a safety plug is provided on the pressure handle.

Preferably, entrainment is provided on the outer side of the outer cylinder, and the fine water mist spray gun is interposed between the entrainment and the outer cylinder.

Preferably, the gas in the inner cylinder is an inert gas.

Compared with the prior art, the present invention has the advantages of:

1. In the water mist fire extinguisher of the present invention, the high-pressure gas in the inner cylinder enters the outer cylinder after passing through the pressure reducer and the constant pressure output valve, which can continuously maintain constant pressure injection, and can directly use pure water as a fire extinguishing agent for fire extinguishing , and water added with fire extinguishing fluid can be used as a fire extinguishing agent, with high fire extinguishing efficiency, small water stain residue, convenient post-treatment, environmental friendliness, comprehensive types of fires that can be prevented, stable fine water mist spray, and good droplet quality, so The live safety is good and stable, and the residual amount of fire extinguishing agent is small. It can be widely used in the field of fire protection in important places such as substations, subway stations, public building archives and libraries. It can extinguish class A, B, C and E fires. wide.

2. The fine water mist fire extinguisher of the present invention has the same appearance as common fire extinguishers, and is easy to use, safe and reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

illustration:

1. Outer cylinder; 2. Inner cylinder; 3. Safety plug; 4. Pressure handle; 5. Pressure gauge; 6. Start valve; 7. Pressure reducer; 8. Constant pressure output valve; 9. Siphon; 10 1. Pressure-resistant hose; 11. Water mist spray gun; 12. Entrainment; 13. Fire extinguishing agent.

detailed description

In order to facilitate the understanding of the present invention, the present invention will be described more fully and in detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

As shown in Figure 1, a kind of constant pressure fine water mist fire extinguisher embodiment of the present invention, comprises starting valve 6, fine water mist spray gun 11 and the outer cylinder body 1 that is equipped with fire extinguishing agent 13, fine water mist spray gun 11 passes through The pressure hose 10 communicates with the siphon tube 9 arranged in the outer cylinder body 1 . An inner cylinder 2 is set inside the outer cylinder 1, and a high-pressure inert gas is installed in the inner cylinder 2. The starting valve 6 is arranged at the opening of the inner cylinder 2, and the outlet of the starting valve 6 passes through the connected pressure reducer in turn. 7 and the constant pressure output valve 8 communicate with the inner cavity of the outer cylinder 1. After the starting valve 6 is opened, the high-pressure gas in the inner cylinder 2 is output to a constant pressure through the pressure reducer 7 and the constant pressure output valve 8, and enters the outer cylinder. In 1, the fire extinguishing agent 13 is delivered to the fine water mist spray gun 11 at a constant pressure to realize constant pressure fine water mist fire extinguishing. The invention can continuously maintain constant pressure spraying, high fire extinguishing efficiency, comprehensive types of fires that can be prevented and controlled, stable fine water mist spray, and good droplet quality, so the charging safety is good and stable, and the residual amount of fire extinguishing agent is small, which can be widely used in substations In the field of fire protection in important places such as subway stations, public building archives and libraries, it can extinguish class A, B, C and E fires.

In this embodiment, an entrainment 12 is provided on the outer side of the outer cylinder 1 , and a fine water mist spray gun 11 is sandwiched between the entrainment 12 and the outer cylinder 1 . The middle part of the starting valve 6 is provided with a pressure gauge 5, and the top of the starting valve 6 is provided with a pressing handle 4, and the pressing handle 4 is provided with a safety plug 3. When extinguishing the fire, pull out the safety plug 3, touch the pressure handle 4 above the starting valve 6, and then start the starting valve 6. The high-pressure gas is decompressed by the pressure reducer 7, and is output to a constant pressure by the constant pressure output valve 8, and enters the outer cylinder 1, the pressure-delivered fire extinguishing agent 13 passes through the siphon 9, and then passes through the pressure-resistant hose 10 and the fine water mist spray gun 11 to release the fine water mist and spray it to the fire scene to extinguish the fire.

When the fire extinguisher is not in use at ordinary times, the starting valve 6 is in the closed state, and the fire extinguishing agent 13 of the outer cylinder 1 cannot flow out of the fire extinguisher. Only after the fire extinguisher is started, the pressure of the outer cylinder 1 can be output when the pressure reaches a certain pressure value. The flow rate of fine water mist and droplet particles have been stable. Therefore, the fire extinguisher has high fire extinguishing efficiency, high electrification safety and stability.

The above-mentioned are only the best embodiments of the present invention, and are not used to limit the scope of the present invention. All equivalent changes or modifications made according to the patent scope of the present invention are covered by the present invention.

Claims (4)

1. a kind of portable constant pressure water mist fire extinguisher, including fire extinguisher body, the fire extinguisher body includes outer cylinder body, startup Valve and fine water fog spraying gun, are equiped with extinguishing medium in the outer cylinder body, and the fine water fog spraying gun passes through pressure hose and sets Siphon pipe connection in outer tube body, it is characterised in that：Also include that the inner barrel for being equiped with gases at high pressure, the inner barrel are arranged In outer tube body, the startup valve is arranged at the opening of inner barrel, and the outlet for starting valve passes sequentially through subtracting of being connected Depressor and level pressure delivery valve and outer cylinder body inner space, after starting valve opening, gases at high pressure in inner core body through pressure reducer and Level pressure delivery valve is exported to constant pressure, extinguishing medium constant pressure is delivered to fine water fog spraying gun in entrance outer tube body and realizes that constant pressure is thin Mist fire-fighting.

2. portable constant pressure water mist fire extinguisher according to claim 1, it is characterised in that：The middle part for starting valve Pressure gauge is provided with, the top for starting valve is provided with pressure handle, and the pressure handle is provided with lock.

3. portable constant pressure water mist fire extinguisher according to claim 1, it is characterised in that：It is provided with the outside of the outer cylinder body Entrainment, the fine water fog spraying gun are located between the entrainment and outer cylinder body.

4. portable constant pressure water mist fire extinguisher according to claim 1, it is characterised in that：Gas in the inner core body For inert gas.