CN110354422B - Negative pressure mobile three-phase foam generating device and method - Google Patents
Negative pressure mobile three-phase foam generating device and method Download PDFInfo
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- CN110354422B CN110354422B CN201910608033.7A CN201910608033A CN110354422B CN 110354422 B CN110354422 B CN 110354422B CN 201910608033 A CN201910608033 A CN 201910608033A CN 110354422 B CN110354422 B CN 110354422B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0036—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using foam
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Abstract
The invention relates to the technical field of fire safety, and provides a negative pressure movable three-phase foam generating device which comprises a sledge body cart, a pressurizing system, a powder adding device, a foam liquid supply system, a negative pressure air suction type foam injection system and a foam liquid conveying control valve. The whole three-phase foam generating device is integrated on a sledge body, and the sledge body is provided with a movable roller to form a sledge body cart. When a fire disaster occurs, the whole sledge body cart can be moved to the most favorable fire extinguishing position, and the fire extinguishing effect is improved. The sledge body cart can be provided with a small amount of fire water for short-time foam generation and injection. The sledge body shallow is equipped with fire water inlet (fire water interface), can be connected with near fire hydrant through fire hose. Sled dress itself can the negative pressure breathe in and spray the foam, also can pass through export fire hose with the foam mixed liquid, with the fire water interface connection of fire engine, then spray the foam through the height-lifting spray gun of fire engine.
Description
Technical Field
The invention relates to the technical field of fire safety, in particular to a negative pressure mobile three-phase foam generating device and method.
Background
The three-phase foam is characterized in that solid powder is added into a traditional gas-liquid two-phase foam extinguishing agent, and the solid powder and a surfactant in the foam act synergistically to improve the stability of bubbles in the foam. Generally, the liquid separation time, the thermal stability of the oil surface and the re-ignition resistance after fire extinguishment of the three-phase foam are all superior to those of gas-liquid two-phase foam. Currently, there are many patents and methods for the preparation of three-phase foams for coal mine fire extinguishing, and few patents for the generation and injection of three-phase foams for petrochemical tank field oil fire extinguishing.
For example, patent CN 1168891C first prepares a foam liquid containing granular powder, and then the foam liquid with granular powder passes through a venturi tube mixer, and sucks nitrogen gas at the throat position side of the venturi tube section, and gas-liquid-solid three-phase mixing forms three-phase foam at the downstream of the venturi tube section. The device is mainly applied to the field of coal mine fire extinguishing, and is used for preventing coal spontaneous combustion. The particles, the fire water and the foam stock solution are added separately, and the foam solution and the powder do not need to be stirred and mixed in a quantitative container in advance, so the method is suitable for continuous large-flow injection and has higher engineering applicability.
CN 107441657 a, "three-phase jet foam generating device and three-phase jet foam generating method" provides a three-phase jet foam generating device, which is to mix foam mixed liquid with powder to prepare foam liquid containing particles, then pump the foam liquid into a mixing chamber, mix and foam through negative pressure air suction foaming and positive pressure air supply, and finally spray the foam under positive pressure. CN 106362332 a, "full-scale three-phase jet foam generating device", firstly, the foam mixture is mixed with the particles by a stirrer to prepare foam slurry. Pressurizing the foam slurry by a screw pump, adding a positive pressure gas source, mixing, foaming and injecting. The particles, the fire water and the foam stock solution are added separately, and the foam solution and the powder do not need to be stirred and mixed in a quantitative container in advance, so the method is suitable for continuous large-flow injection and has higher engineering applicability.
CN 204134086U, "three-phase foam generator", stores the foam concentrate in a storage tank, located upstream of the water pump. Then, while the foam liquid is pumped by a water pump, the solid powder is sucked in through a venturi section to form foam slurry. And pressurizing the foam slurry by a water pump, and then foaming and spraying the foam slurry by a foam sprayer. In the patent, fire-fighting water is mixed with powder at the upstream of a water pump, and then the fire-fighting water and foam stock solution are mixed in proportion at the downstream of the water pump through a proportioner to form foam solution containing particles.
At present, a petrochemical tank area has a relatively perfect fixed gas-liquid two-phase foam fire extinguishing device which comprises a fire pool, a foam liquid storage tank, a foam proportion mixer, a fire water pipeline, a storage tank fixed type negative pressure air suction foam generator, an injection device and the like. However, fixed fire extinguishing equipment cannot be flexibly moved, and the range of the protected area is limited.
Disclosure of Invention
Aiming at the defects that foam liquid, powder and gas phase are organically mixed and foamed, a three-phase foam generating device in a fixed station cannot move, the use is inconvenient, the use is not flexible enough, the fire extinguishing range is limited and the like, the invention provides a negative pressure movable three-phase foam generating device.
The invention also aims to provide a negative pressure mobile three-phase foam generation method.
The invention adopts the following technical scheme:
a negative pressure mobile three-phase foam generating device comprises a sledge body cart, a pressurizing system, a powder adding device, a foam concentrate supply system, a negative pressure air suction type foam injection system and a foam concentrate conveying control valve, wherein the powder adding device, the foam concentrate supply system, the pressurizing system and the negative pressure air suction type foam injection system are integrally arranged on the sledge body cart;
the pressurization system comprises a fire water interface and a fire water pipe, the fire water interface is arranged at one end of the fire water pipe, the foam concentrate supply system is arranged at the other end of the fire water pipe, and the powder adding device is connected to the fire water pipe in parallel;
the powder adding device comprises a powder bin, a powder-liquid mixing pump, a powder adding device water inlet valve, a powder adding water inlet pipe, a powder slurry conveying switch valve and a powder slurry outlet, wherein the powder adding water inlet pipe and the powder slurry outlet are respectively connected with the fire-fighting water pipe through the powder adding device water inlet valve and the powder slurry conveying switch valve;
the foam concentrate supply system comprises a foam proportion mixer, a foam stock solution storage tank, a slurry inlet and a foam concentrate outlet, and is connected with the other end of the fire-fighting water pipe through the slurry inlet;
the negative pressure air-breathing foam injection system comprises a negative pressure air-breathing foam injection gun and a foam concentrate outlet, and is connected with a foam concentrate supply system through a foam concentrate conveying control valve.
Furthermore, a pressure water pump is arranged on the fire water pipe between the slurry outlet and the foam concentrate supply system. The pressure water pump can pressurize the fire water in the fire hose, promotes pressure.
Furthermore, a fire water switch valve is arranged on the fire water pipe.
Further, the device also comprises a control cabinet, and the control cabinet is connected with the powder adding device and the foam liquid supply system in a control mode.
Furthermore, a water inlet connecting flange is arranged on the fire water connector.
Furthermore, a water outlet connecting flange is arranged on a pipeline between the foam concentrate supply system and the foam concentrate delivery control valve.
Further, the fire water connector is provided with two.
Furthermore, two foam liquid outlets are arranged.
Furthermore, universal wheels are arranged below the sledge body trolley.
A negative pressure mobile three-phase foam generation method comprises the following steps:
based on the negative pressure mobile three-phase foam generating device, powder in the powder bin and water injected from the fire water pipe through the powder feeding water inlet pipe are mixed under the driving of a powder-liquid mixing pump to prepare powder slurry, and then the powder slurry is injected back to the fire water pipe and then is injected into a foam liquid supply system through a powder slurry inlet; mixing the powder slurry (fire water containing particles) and the foam stock solution in the foam stock solution storage tank in proportion under the control of a foam proportion mixer to prepare foam mixed solution containing particles for foaming; the negative pressure air suction type foam spraying system foams foam mixed liquid containing particles in the spraying process in a negative pressure air suction mode.
In the technical scheme, the whole three-phase foam generating device is integrated on a sledge body, and the sledge body is provided with the movable roller to form a sledge body cart. When a fire disaster occurs, the whole sledge body cart can be moved to the most favorable fire extinguishing position, and the fire extinguishing effect is improved. The sledge body cart can be provided with a small amount of fire water for short-time foam generation and injection. The sledge body shallow is equipped with fire water inlet (fire water interface), can be connected with near fire hydrant through fire hose. Sled dress itself can the negative pressure breathe in and spray the foam, also can pass through export fire hose with the foam mixed liquid, with the fire water interface connection of fire engine, then spray the foam through the height-lifting spray gun of fire engine.
The fire water interface is connected with a local fire hydrant, and fire water enters the fire water pipe. The powder adding device adopts a pumping mixing principle, the pressure and the flow of fire fighting water entering the powder adding device can be controlled by a water inlet valve of the powder adding device, powder is extracted from the powder bin to prepare powder slurry, and then the powder slurry is injected into a fire fighting water pipe.
The pressure water pump pressurizes the fire water in the fire water pipe to raise the pressure.
The high-pressure fire-fighting water passes through a foam proportioning mixer in a foam concentrate supply system, and the foam concentrate and the fire-fighting water are mixed according to the proportion (the mass concentration of the foam extinguishing agent concentrate is generally 3% or 6%) to prepare the foam concentrate for foaming.
The foam liquid can be sprayed by a negative pressure air suction type foam spraying gun of the device, and can also be connected with a fire fighting nozzle of a fire fighting truck through a foam liquid outlet and lifted and sprayed by the fire fighting truck.
The invention has the beneficial effects that:
the negative pressure mobile three-phase foam generating device and method are provided, the three-phase foam generating device is integrated on a prying body cart, the structure is more compact, the occupied area is small, and the prying body cart is convenient to move; when the fire hydrant is in operation, only a pipeline is needed to be connected with a local fire hydrant (a water source is provided), the fire hydrant can be used for extinguishing fire in a fixed oil depot and an oil and gas station according to different use requirements, and can also be connected with a fire truck for rescuing complex oil fire;
the problem that a fixed three-phase foam generation technology cannot be moved, is limited by positions in use and has limited fire extinguishing capacity is solved, and the three-phase foam generation technology can be moved to the most favorable fire extinguishing position according to the specific position of a fire, so that the fire extinguishing efficiency is improved;
the water inlet connecting flange and the water outlet connecting flange are designed, the water taking condition of various water sources is not limited during fire extinguishing, and the water outlet can also select to use a self-contained spray gun or a spray gun connected with a fire truck or other stations according to the condition, so that the selection and the use are more flexible;
the device can continuously prepare large-flow and stable-performance three-phase foam, can independently operate and spray the three-phase foam, can also be butted with a fire truck to lift and spray, and is flexible and various in application; the device has compact structure, convenient operation, high reliability and larger market prospect.
Drawings
FIG. 1 is a schematic structural diagram of a negative pressure mobile three-phase foam generating device;
FIG. 2 is a schematic top view of the negative pressure mobile three-phase foam generator;
FIG. 3 is a schematic view of a powder feeder;
FIG. 4 is a schematic view of a foam concentrate supply system.
The system comprises a skid body cart 1, fire water connectors 2 (2 connectors can be arranged: 2-1 and 2-2), a water inlet pipe 3, a powder feeding water inlet pipe 4, a powder feeding device water inlet valve 5, a powder feeding device 6 (comprising a powder liquid mixing pump and a powder bin), a powder slurry conveying switch valve 7, a fire water switch valve 8, a fire water pipe 9, a pressure water pump 10, a control cabinet 11, a foam liquid supply system 12 (comprising a foam proportion mixer and a foam stock liquid storage tank), a foam liquid conveying control valve 13, a negative pressure air suction type foam injection gun 14 and a foam liquid outlet 15 (2 connectors can be arranged: 15-1 and 15-2).
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
with reference to fig. 1 and 2, a negative pressure mobile three-phase foam generating device comprises a sledge body cart 1, a pressurizing system, a powder adding device 6, a foam concentrate supply system 12, a negative pressure air-breathing type foam injection system and a foam concentrate conveying control valve 13, wherein the powder adding device 6, the foam concentrate supply system 12, the pressurizing system and the negative pressure air-breathing type foam injection system are integrally arranged on the sledge body cart 1;
the pressurization system comprises a fire water interface 2 and a fire water pipe 9, the fire water interface 2 is arranged at one end of the fire water pipe 9, a foam concentrate supply system 12 is arranged at the other end of the fire water pipe 9, and a powder adding device 6 is connected in parallel to the fire water pipe 9 (the fire water pipe 9 section between the fire water interface 2 and the foam concentrate supply system 12);
the powder adding device 6 comprises a powder bin II, a powder-liquid mixing pump I, a powder adding device water inlet valve 5, a powder adding water inlet pipe 4, a powder slurry conveying switch valve 7 and a powder slurry outlet, wherein the powder adding water inlet pipe 4 and the powder slurry outlet are respectively connected with a fire-fighting water pipe 9 through the powder adding device water inlet valve 5 and the powder slurry conveying switch valve 7;
the foam concentrate supply system 12 comprises a foam proportion mixer, a foam stock solution storage tank, a slurry inlet and a foam concentrate outlet, and the foam concentrate supply system 12 is connected with the other end of the fire water pipe 9 through the slurry inlet;
the negative pressure air-breathing foam injection system comprises a negative pressure air-breathing foam injection gun 14 and a foam concentrate outlet 15, and is connected with the foam concentrate supply system 12 through a foam concentrate conveying control valve 13.
Furthermore, a pressure water pump 10 is arranged on the fire water pipe 9 between the slurry outlet and the foam concentrate supply system 12.
The pressure water pump 10 can pressurize the fire water in the fire hose 9 to raise the pressure (generally, the pressure can be raised by 0.8 to 1.2 MPa).
Further, a fire water switch valve 8 is arranged on the fire water pipe 9.
Further, the device also comprises a control cabinet 11, wherein the control cabinet 11 is in control connection with the powder adding device 6 and the foam concentrate supply system 12.
Furthermore, a water inlet connecting flange is arranged on the fire water connector 2.
Furthermore, a water outlet connecting flange is arranged on a pipeline between the foam concentrate supply system 12 and the foam concentrate delivery control valve 13.
Further, the fire water interfaces are provided with two (see 2-1 and 2-2 in fig. 2).
Further, the foam concentrate outlet is provided in two (see 15-1 and 15-2 in FIG. 2)).
Furthermore, universal wheels are arranged below the sledge body cart 1.
A negative pressure mobile three-phase foam generation method comprises the following steps:
based on a negative pressure mobile three-phase foam generating device, powder in a powder bin II and water injected from a fire water pipe 9 through a powder adding water inlet pipe 4 are mixed under the driving of a powder-liquid mixing pump I to prepare powder slurry, and then the powder slurry is injected back to the fire water pipe 9 and then is injected into a foam liquid supply system 12 through a powder slurry inlet; mixing the powder slurry (fire water containing particles) and the foam stock solution in the foam stock solution storage tank (III) in proportion under the control of a foam proportion mixer (III) to prepare foam mixed solution containing particles for foaming; the negative pressure air suction type foam spraying system foams foam mixed liquid containing particles in the spraying process in a negative pressure air suction mode.
The whole three-phase foam generating device is integrated on a sledge body, and the sledge body is provided with a movable roller to form a sledge body cart 1. When a fire disaster occurs, the whole sledge body cart 1 can be moved to the most favorable fire extinguishing position, and the fire extinguishing effect is improved. The sledge body cart 1 can be provided with a small amount of fire water for short-time foam generation and injection. The sledge body cart 1 is provided with a fire water inlet (fire water interface) and can be connected with a nearby fire hydrant through a fire hose. Sled dress itself can the negative pressure breathe in and spray the foam, also can pass through export fire hose with the foam mixed liquid, with the fire water interface connection of fire engine, then spray the foam through the height-lifting spray gun of fire engine.
The fire water connector 2 is connected with a local fire hydrant, and fire water enters a fire water pipe. The powder adding device adopts a pumping mixing principle, the pressure and the flow of fire fighting water entering the powder adding device can be controlled by a water inlet valve of the powder adding device, powder is extracted from the powder bin to prepare powder slurry, and then the powder slurry is injected into the fire fighting water pipe 9.
The pressure water pump 10 pressurizes the fire water in the fire hose 9 to raise the pressure.
The high-pressure fire-fighting water passes through a foam proportion mixer in the foam concentrate supply system 12, and the foam concentrate and the fire-fighting water are mixed according to the proportion (the mass concentration of the foam extinguishing agent concentrate is generally 3% or 6%) to prepare the foam concentrate for foaming.
The foam liquid can be sprayed by a negative pressure air suction type foam spraying gun 14 of the device, or can be connected with a fire fighting nozzle of a fire fighting truck through a foam liquid outlet 15 and lifted and sprayed by the fire fighting truck.
Example 1:
petrochemical tank district foam fire extinguishing systems.
The negative pressure mobile three-phase foam generating device is integrally sledded on a sledge body cart 1. The two fire water connectors 2 on the water inlet side of the sledge body cart 1 are arranged, and water can be taken through connection of the two fire hoses and the fire hydrant on the station.
The fire water switch valve 8 can be normally opened. Opening a water inlet valve 5 of a powder adding device on a powder adding water inlet pipe 4, introducing fire water into a powder adding device 6, starting a powder-liquid mixing pump, enabling solid powder in a powder bin to enter the powder-liquid mixing pump, uniformly mixing the solid powder and the water according to a certain proportion through a program arranged in a control cabinet 11 in advance, and injecting powder slurry mixed with particles into a fire water pipe 9 through a powder slurry conveying switch valve 7.
Then the fire fighting water mixed with particles is pressurized to 0.8-1.2MPa by a pressurizing water pump 10 and output, and in a foam mixing system 12 arranged at the rear end of the fire fighting water, a foam proportioning mixer is used for mixing the foam stock solution in the foam stock solution storage tank (IV) with the incoming fire fighting water according to a certain proportion (3 percent or 6 percent) to obtain the foam solution.
The foam concentrate mixed with the particles is conveyed to a negative pressure air suction type foam spraying gun 14 through a foam concentrate conveying control valve 13, and is sucked and foamed for spraying for fire extinguishing.
Example 2:
a foam fire extinguishing system of an oil and gas filling station.
The negative pressure mobile three-phase foam generating device is integrally sledded on a sledge body cart 1. The two fire water connectors 2 on the water inlet side of the sledge body cart 1 are arranged, and water can be taken through connection of the two fire hoses and the fire hydrant on the station.
The fire water switch valve 8 can be normally opened. Opening a water inlet valve 5 of a powder adding device on a powder adding water inlet pipe 4, introducing fire water into a powder adding device 6, starting a powder-liquid mixing pump, enabling solid powder in a powder bin to enter the powder-liquid mixing pump, uniformly mixing the solid powder and the water according to a certain proportion through a program arranged in a control cabinet 11 in advance, and injecting powder slurry mixed with particles into a fire water pipe 9 through a powder slurry conveying switch valve 7.
Then the fire fighting water mixed with particles is pressurized to 0.8-1.2MPa by a pressurizing water pump 10 and output, and in a foam mixing system 12 arranged at the rear end of the fire fighting water, a foam proportioning mixer is used for mixing the foam stock solution in the foam stock solution storage tank (IV) with the incoming fire fighting water according to a certain proportion (3 percent or 6 percent) to obtain the foam solution.
The foam concentrate mixed with the particles is conveyed to a negative pressure air suction type foam spraying gun 14 through a foam concentrate conveying control valve 13, and is sucked and foamed for spraying for fire extinguishing.
Example 3:
the foam is sprayed to extinguish fire by matching with a fire truck.
The negative pressure mobile three-phase foam generating device is integrally sledded on a sledge body cart 1. The two fire water connectors 2 on the water inlet side of the sledge body cart 1 are arranged, and water can be taken through connection of the two fire hoses and the fire hydrant on the station. The fire water switch valve 8 can be normally opened.
A water inlet valve of a powder adding device 5 on a powder adding water inlet pipe 4 is opened to introduce fire water into a powder adding device 6, a powder-liquid mixing pump is started, solid powder in a powder bin enters the powder-liquid mixing pump, the solid powder and water are uniformly mixed according to a certain proportion through a program arranged in a control cabinet 11 in advance, and then powder slurry mixed with particles is injected into a fire water pipe 9 through a powder slurry conveying switch valve 7.
Then the fire fighting water mixed with particles is pressurized to 0.8-1.2MPa by a pressurizing water pump 10 and output, and in a foam mixing system 12 arranged at the rear end of the fire fighting water, a foam proportioning mixer is used for mixing the foam stock solution in the foam stock solution storage tank (IV) with the incoming fire fighting water according to a certain proportion (3 percent or 6 percent) to obtain the foam solution.
The foam concentrate mixed with the particles is delivered to a foam concentrate outlet 15 through a foam concentrate delivery control valve 13. The foam concentrate outlet 15 may be connected to a fire port of a fire truck, sprayed by lifting the fire truck, and foamed by an injector on the fire truck.
In use, the self-contained negative pressure air suction type foam jet gun 14 or the jet gun connected with a fire fighting truck through a foam liquid outlet 15 can be selected according to the specific configuration conditions of a petrochemical tank area and a refueling and gas filling station.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (5)
1. A negative pressure mobile three-phase foam generating device is characterized by comprising a sledge body cart, a pressurizing system, a powder adding device, a foam liquid supply system, a negative pressure air suction type foam injection system, a foam liquid conveying control valve and a control cabinet, wherein the powder adding device, the foam liquid supply system, the pressurizing system, the negative pressure air suction type foam injection system and the control cabinet are integrally arranged on the sledge body cart, and the control cabinet is in control connection with the powder adding device and the foam liquid supply system;
the pressurization system comprises a fire water connector and a fire water pipe, the fire water connectors are arranged at one end of the fire water pipe, the number of the fire water connectors is two, and a water inlet connecting flange is further arranged on the fire water connectors; the foam liquid supply system is arranged at the other end of the fire-fighting water pipe, and the powder adding device is connected to the fire-fighting water pipe in parallel; a fire-fighting water switch valve is arranged on the fire-fighting water pipe;
the powder adding device comprises a powder bin, a powder-liquid mixing pump, a powder adding device water inlet valve, a powder adding water inlet pipe, a powder slurry conveying switch valve and a powder slurry outlet, wherein the powder adding water inlet pipe and the powder slurry outlet are respectively connected with the fire-fighting water pipe through the powder adding device water inlet valve and the powder slurry conveying switch valve;
the foam concentrate supply system comprises a foam proportion mixer, a foam stock solution storage tank, a slurry inlet and a foam concentrate outlet, and is connected with the other end of the fire-fighting water pipe through the slurry inlet; two foam liquid outlets are arranged;
the negative pressure air-breathing foam injection system comprises a negative pressure air-breathing foam injection gun and a foam concentrate outlet, and is connected with a foam concentrate supply system through a foam concentrate conveying control valve.
2. The negative pressure mobile three-phase foam generator as claimed in claim 1, wherein a pressure water pump is provided on the fire hose between the slurry outlet and the foam concentrate supply system.
3. The negative pressure mobile three-phase foam generator as claimed in claim 1, wherein a water outlet connecting flange is provided on the pipeline between the foam concentrate supply system and the foam concentrate delivery control valve.
4. The negative pressure mobile three-phase foam generator as claimed in claim 1, wherein universal wheels are arranged below the sledge cart.
5. A negative pressure mobile three-phase foam generating method implemented based on the negative pressure mobile three-phase foam generating device of any one of claims 1 to 4, which is characterized by comprising the following steps:
the fire water interface is connected with a local fire hydrant, and fire water enters the fire water pipe; powder in the powder bin and water injected from a fire hose through a powder feeding water inlet pipe are mixed under the driving of a powder-liquid mixing pump to prepare powder slurry, then the powder slurry is injected back to the fire hose, the fire hose is pressurized by a pressurizing water pump, the pressure is increased by 0.8-1.2MPa, and then the powder slurry is injected into a foam liquid supply system through a powder slurry inlet; mixing the powder slurry and the foam stock solution in the foam stock solution storage tank in proportion under the control of a foam proportion mixer to prepare foam mixed solution containing particles for foaming; the negative pressure air suction type foam injection system foams foam mixed liquid containing particles in the injection process in a negative pressure air suction mode, or is connected with a fire fighting nozzle of a fire fighting truck through a foam liquid outlet and is subjected to lifting injection through the fire fighting truck.
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| CN111840881B (en) * | 2020-09-03 | 2022-01-25 | 威特龙消防安全集团股份公司 | Preparation method of gel fire extinguishing agent |
| WO2023091075A1 (en) * | 2021-11-19 | 2023-05-25 | Dafo Fomtec Ab | A method for firefighting by use of a firefighting foam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4861270B2 (en) * | 1988-08-30 | 1996-10-29 | Symtron Systems Inc | Fire fighting trainer |
| GB2362099B (en) * | 2000-05-10 | 2003-10-15 | Paul Machora | Automatic fire extinguisher |
| CN201279361Y (en) * | 2008-10-23 | 2009-07-29 | 明光市浩淼消防科技发展有限公司 | Three-phase jet injection fire-extinguishing device |
| CN102940948B (en) * | 2012-10-22 | 2016-01-20 | 中国石油化工股份有限公司 | The application of three-phase composite type foam solution |
| CN203507374U (en) * | 2013-10-15 | 2014-04-02 | 西安新竹防灾救生设备有限公司 | Hybrid fire extinguishing device with fire fighting hose reel |
| CN204134086U (en) * | 2014-05-29 | 2015-02-04 | 中国人民武装警察部队学院 | Three-phase froth generation device |
| CN203971252U (en) * | 2014-05-30 | 2014-12-03 | 西安新竹防灾救生设备有限公司 | A kind of hydrodynamic(al) type dry powder and foam mixing liquid mixing extinguishing device |
| CN204121648U (en) * | 2014-09-17 | 2015-01-28 | 任友刚 | Foam composition generating means |
| CN107485817B (en) * | 2017-08-23 | 2020-04-28 | 中国矿业大学 | Three-phase jet fire-fighting technology mobile experimental platform and application method thereof |
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