CN110448848A - A kind of remote dry powder fire-fighting system of extended-range and operating method - Google Patents
A kind of remote dry powder fire-fighting system of extended-range and operating method Download PDFInfo
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- CN110448848A CN110448848A CN201910699713.4A CN201910699713A CN110448848A CN 110448848 A CN110448848 A CN 110448848A CN 201910699713 A CN201910699713 A CN 201910699713A CN 110448848 A CN110448848 A CN 110448848A
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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
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
Abstract
The present invention relates to a kind of remote dry powder fire-fighting system of extended-range and operating methods, including the tank of resistance to press-powder and inert gas source, the one end for dividing pipeline is connected to inert gas source, and the other end is divided into two branches, one branch is connecting pipe, and connecting pipe is connected with the tank of resistance to press-powder simultaneously；Conveyance conduit one end is connected to the tank of resistance to press-powder, and the other end is connected to delivery terminal；The top installation for the tank of resistance to press-powder is used for the hopper of delivery of dry powder extinguishing chemical；Another branch for dividing pipeline is pressure pipeline, is connected between pressure pipeline and conveyance conduit by least one connecting pipe, and the corresponding check valve of a connecting pipe；The present invention can use dry powder fire extinguishing agent as firing-fighting medium on high altitude firefighting platform, make full use of the characteristics of dry powder medium gas powder Two-phase mixture fluids are from heavy and light, so that firing-fighting medium is easily reached higher height, solve the quagmire of high altitude firefighting.
Description
Technical field
The present invention relates to a kind of remote dry powder fire-fighting system of extended-range and operating methods, belong to the letter for fire-fighting system
Breath and automation field.
Background technique
With the quickening of process of modernization, more and more high level super high-rise buildings occur in city, and increasingly
The skyscraper of growth is compared, and high building fire fighting rescue is faced adverse conditions.The main firing-fighting medium of existing high building fire-proof is water, by
It is limited to the high self weight of aqueous medium, fire-fighting lance, water cannon jetting height are generally less than 50 meters.And high flow capacity, high fire water is penetrated greatly
Big gun is high to the stability requirement of carrying platform, and country's truck lift height focuses mostly at 68 meters hereinafter, only at present
A few cities, which possess, surpasses hundred meters of fire fighting trucks；The self weight for how reducing fire-fighting medium, the limit height for promoting fire control platform have weight
Big social effect and broad application prospect.
Dry powder fire extinguishing agent is also known as powder fire extinguishing agent, the fire for A, B, C class that can go out；It is widely used in oil field, oil depot, oil refining
Factory, chemical plant, chemical industry warehouse, ship, airport and industrial and mining enterprises fire-fighting fire extinguishing.It is driven using inert gas, and by lazy
Property gas carry dry powder fire extinguishing agent formed gas powder Two-phase mixture fluids, the remote transmission of dry powder fire extinguishing agent can be realized by pipeline；
The specific gravity of gas powder Two-phase mixture fluids is far below aqueous medium, has the weight advantage of remote high altitude firefighting transport；But it is high at present
Empty fire-fighting uses ductwork type powder system not yet, main reason is that current ductwork type powder system is using primary pressurization
Mode carry out, transmission range is limited, and injecting time is short, fire extinguishing duration it is poor, it is difficult to meet the needs of high altitude firefighting, therefore mesh
Preceding ductwork type powder system is mainly used for fixed equipment and the initial fire disaster in place is put out.
Summary of the invention
The present invention provides a kind of remote dry powder fire-fighting system of extended-range and operating method, can make on high altitude firefighting platform
Dry powder fire extinguishing agent is used as firing-fighting medium, the characteristics of dry powder medium gas powder Two-phase mixture fluids are from heavy and light is made full use of, fire extinguishing is made to be situated between
It is light to reach higher height, solve the quagmire of high altitude firefighting.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of remote dry powder fire-fighting system of extended-range,
Including the tank of resistance to press-powder and inert gas source, the one end for dividing pipeline is connected to inert gas source, and the other end is divided into two branches,
One branch is connecting pipe, and connecting pipe is connected with the tank of resistance to press-powder simultaneously；
Including conveyance conduit, one end is connected to the tank of resistance to press-powder, and the other end is connected to delivery terminal；
The top installation for the tank of resistance to press-powder is used for the hopper of delivery of dry powder extinguishing chemical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve is installed close to the position for the tank of resistance to press-powder in road, installs at least one check valve on conveyance conduit；
Another branch for dividing pipeline is pressure pipeline, passes through at least one connecting pipe between pressure pipeline and conveyance conduit
It is connected to, and the corresponding check valve of a connecting pipe, while the distance between each check valve and the tank of resistance to press-powder are less than
The distance between connecting pipe and the tank of resistance to press-powder；
Third, which is respectively mounted, on each connecting pipe opens air valve fastly；
As present invention further optimization,
Another branch for dividing pipeline is pressure pipeline, further includes two connecting pipes, respectively the first connecting pipe and the
One end of two connecting pipes, each connecting pipe is connected to pressure pipeline, and the other end and conveyance conduit of each connecting pipe connect
It is logical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve and two check valves are successively installed, wherein the first connecting pipe is located between two check valves, first connects on road
Third, which is respectively mounted, on adapter tube road, the second connecting pipe opens air valve fastly；
As present invention further optimization,
The top that hopper is fixed on the tank of resistance to press-powder by rotating feeder；
Rotation feeder above-mentioned is scroll feeder；
As present invention further optimization,
Inert gas source above-mentioned includes at least one high-pressure nitrogen bottle, at least one high-pressure nitrogen bottle connects to be formed, and each high
Pressing nitrogen cylinder includes 50Lda nitrogen, and pressure tolerance is 15Mpa；
As present invention further optimization,
Above-mentioned second opens air valve, fast ball valve and third fastly opens air valve fastly and passes through signal controller control, signal control
The main control chip of device uses floating type central processing unit TMS320F28335；
As present invention further optimization,
Scroll feeder above-mentioned is connected to signal controller, and the main control chip of signal controller uses floating type central processing unit
TMS320F28335；
A kind of operating method of the remote dry powder fire-fighting system of extended-range, comprising the following steps:
Step 1: not pressurizeing to the tank of resistance to press-powder, dry powder fire extinguishing agent is contained into hopper, starts scroll feeder, to the tank of resistance to press-powder
Inside feed intake；
Step 2: starting pressure reducing valve, inert gas source are decompressed to matching pressure；
Step 3: keeping first to open fastly, air valve is normally opened, and partial pressure pipeline, pressure pipeline are connected to；
Step 4: air valve opening is opened in signal controller control second fastly, partial pressure pipeline, connecting pipe connection put into the tank of resistance to press-powder
Dry powder fire extinguishing agent mixed with the inert gas that inert gas source conveys, gas powder two-phase mixtures stream mode is formed, until the tank of resistance to press-powder
Internal pressure is stablized；
It is closed step 5: signal controller controls the second quck-opening valve, synchronous signal controller controls fast ball valve and opens, resistance to press-powder
Tank is connected to conveyance conduit, and gas powder Two-phase mixture fluids are discharged into conveyance conduit, after the gas powder Two-phase mixture fluids emptying in the tank of resistance to press-powder,
Fast ball valve is closed, under the action of check valve, gas powder Two-phase mixture fluids are fed directly to delivery terminal；
Step 6: signal controller control third opens air valve opening fastly, pressure pipeline, connecting pipe are connected to conveyance conduit, gas
Powder Two-phase mixture fluids further transmit in conveyance conduit to delivery terminal in the case where the inert gas being newly pressurized pushes；
Step 7: signal controller control scroll feeder unlatching feeds intake, synchronous signal controller after fast ball valve closure
Air valve opening is opened in control second fastly, and the dry powder fire extinguishing agent for carrying out next one is mixed with the inert gas that inert gas source conveys.
By above technical scheme, compared with the existing technology, the invention has the following advantages:
1, inert gas source of the invention provides driving force for dry powder fire-fighting system, after inert gas and dry powder fire extinguishing agent are sufficiently mixed
Gas powder Two-phase mixture fluids are formed, dry powder fire extinguishing agent movement is driven；
2, high pressure inert gas source is depressurized to convenient pressure by pressure reducing valve of the invention, is sent into pressure piping and connecting pipe；
3, of the invention first opens air valve, third fastly and opens the control valve that air valve is pressure piping fastly, and each air valve of opening fastly is being believed
It can individually be opened and closed under the control of number controller, provide independent certain driving air-flow for boost section each on conveyance conduit；
4, the tank of resistance to press-powder of the invention is sufficiently mixed to provide one into the dry powder fire extinguishing agent of transfer pipeline and inert gas and stirs
The container mixed goes out so that dry powder fire extinguishing agent and inert gas are capable of forming the suitable gas powder Two-phase mixture fluids of density convenient for dry powder
Fiery agent quickly conveys in transfer pipeline；
5, hopper of the invention provides the container that feeds intake of dry powder fire extinguishing agent, guarantees the lasting supply of subsequent dry powder fire extinguishing agent；
6, scroll feeder of the invention use unidirectional feeding structure, guarantee the tank of resistance to press-powder in pressure process gas powder will not from feed
Material mouth leakage, while continual dry powder fire extinguishing agent can be provided for transport pipeline；
7, fast ball valve of the invention is remained off when the tank of resistance to press-powder pressurizes and mixes, and is terminated when gas powder mixes, is quickly opened
It opens for the gas powder Two-phase mixture fluids in the tank of resistance to press-powder to be discharged rapidly and is sent into transfer pipeline；
8, at least one check valve of the invention guarantees pressure piping when segmentation is pressurized relay, and the gas powder two-phase in transfer pipeline is mixed
The one-way flow at interflow；
9, pressure piping of the invention maintains always inert gas high pressure full, passes through the fast of each segmentation when system is run
It opens air valve and provides connecting conveying power source for gas powder Two-phase mixture fluids；
10, signal controller of the invention control respectively fast ball valve and it is each open air valve fastly, serial vein when being provided for each valve
Signal is rushed, in gas powder Two-phase mixture fluids transportational process, what successively opening ball valve and each connecting were segmented opens air valve fastly, realizes gas
The connecting of powder Two-phase mixture fluids is transported.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the overall structure diagram of the preferred embodiment of the present invention；
When Fig. 2 is that each air valve, scroll feeder and ball valve are controlled by signal controller in the preferred embodiment of the present invention
Sequence signal waveform diagram.
In figure: 1 is inert gas source, and 2 be pressure reducing valve, and 3 be partial pressure pipeline, and 4 open air valve for first fastly, and 5 open gas for second fastly
Valve, 6 be connecting pipe, and 7 be pressure pipeline, and 8 be hopper, and 9 be the tank of resistance to press-powder, and 10 be scroll feeder, and 11 be conveyance conduit, 12
It is check valve for fast ball valve, 13,14 open air valve for third fastly, and 15 be connecting pipe, and 16 be signal controller.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, the present invention includes following characteristics component: 1 is inert gas source, and 2 be pressure reducing valve, and 3 be to divide pipeline, 4
Air valve is opened fastly for first, 5 open air valve for second fastly, and 6 be connecting pipe, and 7 be pressure pipeline, and 8 be hopper, and 9 be the tank of resistance to press-powder, and 10
It is conveyance conduit for scroll feeder, 11,12 be fast ball valve, and 13 be check valve, and 14 open air valve for third fastly, and 15 be communicating pipe
Road, 16 be signal controller.
A kind of remote dry powder fire-fighting system of extended-range of the invention,
Including the tank of resistance to press-powder and inert gas source, the one end for dividing pipeline is connected to inert gas source, and the other end is divided into two branches,
One branch is connecting pipe, and connecting pipe is connected with the tank of resistance to press-powder simultaneously；
Including conveyance conduit, one end is connected to the tank of resistance to press-powder, and the other end is connected to delivery terminal；
The top installation for the tank of resistance to press-powder is used for the hopper of delivery of dry powder extinguishing chemical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve is installed close to the position for the tank of resistance to press-powder in road, installs at least one check valve on conveyance conduit；
Another branch for dividing pipeline is pressure pipeline, passes through at least one connecting pipe between pressure pipeline and conveyance conduit
It is connected to, and the corresponding check valve of a connecting pipe, while the distance between each check valve and the tank of resistance to press-powder are less than
The distance between connecting pipe and the tank of resistance to press-powder；
Third, which is respectively mounted, on each connecting pipe opens air valve fastly；
Preferred embodiment based on above system is as follows:
Shown in Fig. 1, a kind of remote dry powder fire-fighting system of extended-range, including the tank of resistance to press-powder and inert gas source, divide the one of pipeline
End be connected to inert gas source, and the other end is divided into two branches, and a branch is connecting pipe, connecting pipe and meanwhile with resistance to press-powder
Tank is connected；
Including conveyance conduit, one end is connected to the tank of resistance to press-powder, and the other end is connected to delivery terminal；
The top installation for the tank of resistance to press-powder is used for the hopper of delivery of dry powder extinguishing chemical；
Another branch for dividing pipeline is pressure pipeline, further includes two connecting pipes, respectively the first connecting pipe and the
One end of two connecting pipes, each connecting pipe is connected to pressure pipeline, and the other end and conveyance conduit of each connecting pipe connect
It is logical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve and two check valves are successively installed, wherein the first connecting pipe is located between two check valves, first connects on road
Third, which is respectively mounted, on adapter tube road, the second connecting pipe opens air valve fastly；
Preferably, pressure reducing valve model can select YQD-370 6*25 pressure reducing valve, first open fastly air valve, second open fastly air valve and
Third opens air valve fastly can select the valve of ZCFK58-DBS model, and fast ball valve selects Q981F to open electrical ball valve fastly；
It is noted, that during practice, transmission pipeline can carry out multiple groups segmentation, include one the in every set of segmentation
Three open air valve fastly, a check valve, preferably two segmentations in preferred embodiment of the present application.
Above-mentioned inert gas source includes at least one high-pressure nitrogen bottle, at least one high-pressure nitrogen bottle connects to be formed, each nitrogen
Gas cylinder provides 15Mpa pressure 50Lda nitrogen tolerance, and inert gas source configures safety relief valve, when inert gas source pressure because extraneous
Environmental factor releases stress automatically when reaching the upper limit, guarantees safety；
The nitrogen pressure of 15MPa is reduced 1.0MPa hereinafter, providing power source for the tank of resistance to press-powder and pressure piping by pressure reducing valve；
First opens air valve, second fastly opens air valve and third fastly and opens air valve fastly and be all made of and change up enclosed solenoid valve fastly, can be rapid
Power source is provided to the tank of resistance to press-powder and conveyance conduit segmentation, when gas powder Two-phase mixture fluids complete connection delivers into next segmentation
Afterwards, and gas source can quickly be cut off；
Fast ball valve uses electromagnetic drive form, controls the output of gas powder mixed flow in the tank of resistance to press-powder；
Rotation feeder is made of transfer passage, helical axis and one-way check valve, and dry powder Jie can be continuously conveyed into the tank of resistance to press-powder
Matter, while guaranteeing that the gas powder mixed flow in the tank of resistance to press-powder will not be revealed from feeder；
It should be noted that the rotation feeder in the application selects YCGN-70 to rotate feeder, therefore do not do here excessive old
It states；
It is sequence signal waveform timing chart caused by signal controller shown in Fig. 2, which can mix according to gas powder
The flow velocity and flow of stream are made adjustment, to meet the needs of different application；Signal controller main control chip uses high-performance
Floating type central processing unit TMS320F28335, clock frequency are up to 150MHz, are providing various forms of high speed clock signals,
The Quick Acquisition of sensor information can be completed simultaneously.
Operating method based on above-mentioned fire-fighting system, comprising the following steps:
Step 1: not pressurizeing to the tank of resistance to press-powder, dry powder fire extinguishing agent is contained into hopper, starts scroll feeder, to the tank of resistance to press-powder
Inside feed intake；
Step 2: starting pressure reducing valve, inert gas source are decompressed to matching pressure；
Step 3: keeping first to open fastly, air valve is normally opened, and partial pressure pipeline, pressure pipeline are connected to；
Step 4: air valve opening is opened in signal controller control second fastly, partial pressure pipeline, connecting pipe connection put into the tank of resistance to press-powder
Dry powder fire extinguishing agent mixed with the inert gas that inert gas source conveys, gas powder two-phase mixtures stream mode is formed, until the tank of resistance to press-powder
Internal pressure is stablized；
It is closed step 5: signal controller controls the second quck-opening valve, synchronous signal controller controls fast ball valve and opens, resistance to press-powder
Tank is connected to conveyance conduit, and gas powder Two-phase mixture fluids are discharged into conveyance conduit, after the gas powder Two-phase mixture fluids emptying in the tank of resistance to press-powder,
Fast ball valve is closed, under the action of check valve, gas powder Two-phase mixture fluids are fed directly to delivery terminal；
Step 6: signal controller control third opens air valve opening fastly, pressure pipeline, connecting pipe are connected to conveyance conduit, gas
Powder Two-phase mixture fluids further transmit in conveyance conduit to delivery terminal in the case where the inert gas being newly pressurized pushes；
Step 7: signal controller control scroll feeder unlatching feeds intake, synchronous signal controller after fast ball valve closure
Air valve opening is opened in control second fastly, and the dry powder fire extinguishing agent for carrying out next one is mixed with the inert gas that inert gas source conveys.
Based on above-mentioned fire-fighting system and operating method, the remote dry powder fire-fighting system of the extended-range of the application may be implemented to do
The remote duration of powder extinguishing chemical transmits, and solves the short disadvantage of the nearly injecting time of existing ductwork type powder system transmission range；
In conjunction with high altitude firefighting platform, the limiting altitude of existing fire system can be greatly promoted.Those skilled in the art of the present technique can manage
Solution, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have leads with belonging to the application
The identical meaning of the general understanding of those of ordinary skill in domain.It should also be understood that such as it is defined in the general dictionary that
A little terms, which should be understood that, to be had a meaning that is consistent with the meaning in the context of the prior art, and unless as here
Definition, will not be explained in an idealized or overly formal meaning.
The meaning of "and/or" described herein refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of " connection " described herein can be between component be directly connected to be also possible to pass through between component
Other components are indirectly connected with.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (7)
1. a kind of remote dry powder fire-fighting system of extended-range, it is characterised in that:
Including the tank of resistance to press-powder and inert gas source, the one end for dividing pipeline is connected to inert gas source, and the other end is divided into two branches,
One branch is connecting pipe, and connecting pipe is connected with the tank of resistance to press-powder simultaneously；
Including conveyance conduit, one end is connected to the tank of resistance to press-powder, and the other end is connected to delivery terminal；
The top installation for the tank of resistance to press-powder is used for the hopper of delivery of dry powder extinguishing chemical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve is installed close to the position for the tank of resistance to press-powder in road, installs at least one check valve on conveyance conduit；
Another branch for dividing pipeline is pressure pipeline, passes through at least one connecting pipe between pressure pipeline and conveyance conduit
It is connected to, and the corresponding check valve of a connecting pipe, while the distance between each check valve and the tank of resistance to press-powder are less than
The distance between connecting pipe and the tank of resistance to press-powder；
Third, which is respectively mounted, on each connecting pipe opens air valve fastly.
2. the remote dry powder fire-fighting system of extended-range according to claim 1, it is characterised in that:
Another branch for dividing pipeline is pressure pipeline, further includes two connecting pipes, respectively the first connecting pipe and the
One end of two connecting pipes, each connecting pipe is connected to pressure pipeline, and the other end and conveyance conduit of each connecting pipe connect
It is logical；
Pressure reducing valve and first is installed on partial pressure pipeline and opens air valve fastly, air valve is opened in installation second fastly in connecting pipe, in delivery pipe
Fast ball valve and two check valves are successively installed, wherein the first connecting pipe is located between two check valves, first connects on road
Third, which is respectively mounted, on adapter tube road, the second connecting pipe opens air valve fastly.
3. the remote dry powder fire-fighting system of extended-range according to claim 1, it is characterised in that: hopper passes through rotation feeding
Device is fixed on the top for the tank of resistance to press-powder；
Rotation feeder above-mentioned is scroll feeder.
4. the remote dry powder fire-fighting system of extended-range according to claim 1, it is characterised in that: inert gas source packet above-mentioned
At least one high-pressure nitrogen bottle is included, at least one high-pressure nitrogen bottle connects to be formed, and each high-pressure nitrogen bottle includes 50Lda nitrogen
Gas, pressure tolerance are 15Mpa.
5. the remote dry powder fire-fighting system of extended-range according to claim 1, it is characterised in that: above-mentioned second opens gas fastly
Valve, fast ball valve and third open air valve fastly and pass through signal controller control, and the main control chip of signal controller uses floating-point
Type central processing unit TMS320F28335.
6. the remote dry powder fire-fighting system of extended-range according to claim 2, it is characterised in that: scroll feeder above-mentioned
It is connected to signal controller, the main control chip of signal controller uses floating type central processing unit TMS320F28335.
7. a kind of operating method of the remote dry powder fire-fighting system of extended-range, it is characterised in that: the following steps are included:
Step 1: not pressurizeing to the tank of resistance to press-powder, dry powder fire extinguishing agent is contained into hopper, starts scroll feeder, to the tank of resistance to press-powder
Inside feed intake；
Step 2: starting pressure reducing valve, inert gas source are decompressed to matching pressure；
Step 3: keeping first to open fastly, air valve is normally opened, and partial pressure pipeline, pressure pipeline are connected to；
Step 4: air valve opening is opened in signal controller control second fastly, partial pressure pipeline, connecting pipe connection put into the tank of resistance to press-powder
Dry powder fire extinguishing agent mixed with the inert gas that inert gas source conveys, gas powder two-phase mixtures stream mode is formed, until the tank of resistance to press-powder
Internal pressure is stablized；
It is closed step 5: signal controller controls the second quck-opening valve, synchronous signal controller controls fast ball valve and opens, resistance to press-powder
Tank is connected to conveyance conduit, and gas powder Two-phase mixture fluids are discharged into conveyance conduit, after the gas powder Two-phase mixture fluids emptying in the tank of resistance to press-powder,
Fast ball valve is closed, under the action of check valve, gas powder Two-phase mixture fluids are fed directly to delivery terminal；
Step 6: signal controller control third opens air valve opening fastly, pressure pipeline, connecting pipe are connected to conveyance conduit, gas
Powder Two-phase mixture fluids further transmit in conveyance conduit to delivery terminal in the case where the inert gas being newly pressurized pushes；
Step 7: signal controller control scroll feeder unlatching feeds intake, synchronous signal controller after fast ball valve closure
Air valve opening is opened in control second fastly, and the dry powder fire extinguishing agent for carrying out next one is mixed with the inert gas that inert gas source conveys.
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| CN113384840A (en) * | 2021-07-04 | 2021-09-14 | 兴化市方圆消防器材有限公司 | Can supplementary type remove dry powder extinguishing device |
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| CN114100043A (en) * | 2020-09-01 | 2022-03-01 | 中国石油化工股份有限公司 | Foam fire extinguishing system and foam fire extinguishing method |
| CN114100043B (en) * | 2020-09-01 | 2023-02-17 | 中国石油化工股份有限公司 | Foam fire extinguishing system and foam fire extinguishing method |
| CN114652989A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | Storage tank fire extinguishing system for large area fires |
| CN113384840A (en) * | 2021-07-04 | 2021-09-14 | 兴化市方圆消防器材有限公司 | Can supplementary type remove dry powder extinguishing device |
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| CN110448848B (en) | 2023-10-13 |
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