CN114470574B - Gel and gel foam dual-purpose fire extinguishing system and method - Google Patents
Gel and gel foam dual-purpose fire extinguishing system and method Download PDFInfo
- Publication number
- CN114470574B CN114470574B CN202210102417.3A CN202210102417A CN114470574B CN 114470574 B CN114470574 B CN 114470574B CN 202210102417 A CN202210102417 A CN 202210102417A CN 114470574 B CN114470574 B CN 114470574B
- Authority
- CN
- China
- Prior art keywords
- gel
- fire
- pipe
- preparation tank
- foam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
- A62C31/07—Nozzles specially adapted for fire-extinguishing with two or more outlets for different media
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/002—Apparatus for mixing extinguishants with water
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/033—Making of fire-extinguishing materials immediately before use of gel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/28—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for farming
Abstract
The invention discloses a dual-purpose fire extinguishing system and method for gel and gel foam, wherein the system comprises a plurality of gel preparation tanks, a water supply pipe for supplying water to the plurality of gel preparation tanks, a powder supply assembly arranged at the upper part of the gel preparation tanks, a drainage pipe connected with the lower parts of the plurality of gel preparation tanks and a gel foam preparation assembly connected with the drainage pipe, and the method comprises the following steps: 1. judging the type of fire working conditions and selecting a fire extinguishing scheme; 2. extinguishing fire by gel; 3. and gel foam is adopted to extinguish fire. The invention realizes rapid and efficient preparation of gel and gel foam respectively, is convenient for flexibly adjusting the fire extinguishing scheme according to the scene fire conditions, ensures continuous supply of gel and gel foam, effectively improves the fire extinguishing efficiency, is suitable for various fire working condition types, and is beneficial to ensuring the life and property safety of people.
Description
Technical Field
The invention belongs to the technical field of gel fire extinguishment, and particularly relates to a gel and gel foam dual-purpose fire extinguishment system and method.
Background
The fire extinguishing gel is prepared by mixing solid gel powder and water according to a certain proportion to form a colloid with moderate viscosity, the formed colloid is a chelate formed by polymer gel and water, and the chelate is covered on the surface of a fire object to form an isolation layer after being sprayed by a fire gun, so that the fire extinguishing gel not only exerts the cooling effect of water, but also can be covered on the surface of the fire object for a long time to form the isolation layer to isolate oxygen, and is particularly suitable for class A solid fire, meanwhile, the foam has space expansibility, the problem of coverage area of a water-based fire extinguishing agent can be greatly increased, the gel takes the foam as a carrier, the advantages of the foam and the gel are fully combined, and compared with the conventional foam, the gel foam has the advantages of high water retention and cooling property, high adhesion and blocking property and strong thermal stability, and can further promote the fire extinguishing efficiency, and can perform large-scale diffusion, three-dimensional accumulation and all-dimensional coverage on high, medium and low-level fire sources in a fire area.
The common gel use mode is to premix premixed gel again after the use is finished, the gel can not be continuously prepared in the same device, in order to ensure the fire extinguishing performance of the gel fire extinguishing agent during the configuration, the gel powder and the water are required to be mixed accurately and uniformly, so that the premixing process is complicated, the required time is long, the optimal time for fire control can not be stored for a long time, and the fire control is easy to delay, therefore, the premixing mode is not suitable for breaking through the emergency treatment of the fire, the gel fire extinguishing technology can not be widely popularized, and therefore, the gel and gel foam dual-purpose fire extinguishing system and method are lacked, the design is reasonable, the steps are simple, and the gel and gel foam fire extinguishing technology can be widely applied to fire sites.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a dual-purpose fire extinguishing system for gel and gel foam.
In order to solve the technical problems, the invention adopts the following technical scheme: a dual-purpose fire extinguishing system for gel and gel foam, characterized in that: the gel preparation device comprises a plurality of gel preparation tanks, a water supply pipe for supplying water to the plurality of gel preparation tanks, a powder supply assembly arranged at the upper part of the gel preparation tanks, a drainage pipe connected with the lower parts of the plurality of gel preparation tanks and a gel foam preparation assembly connected with the drainage pipe, wherein a liquid level meter and a rotating shaft are arranged in the gel preparation tanks;
the powder feeding assembly comprises a support arranged at the top of the gel preparation tank, a hopper arranged on the support, a screw rod and a powder feeding pipe, gel powder is filled in the hopper, one end of the screw rod is connected with a second motor, the other end of the screw rod stretches into the powder feeding pipe, a through hole connected with the lower part of the hopper is formed in the middle of the powder feeding pipe, and the other end of the powder feeding pipe stretches into the gel preparation tank;
the gel foam preparation assembly comprises a foam generation chamber arranged on the gel foam fire extinguishing pipe and an air compressor connected with the foam generation chamber, and a check valve is arranged between the foam generation chamber and the air compressor.
The gel and gel foam dual-purpose fire extinguishing system is characterized in that: the support comprises two channel steels distributed along the length direction of the screw rod and a flat plate arranged on the channel steels, and a second motor and a powder feeding pipe are arranged on the flat plate;
the powder feeding pipe is an L-shaped pipe, one side of the L-shaped pipe is positioned on the flat plate, the other side of the L-shaped pipe is vertically downward and is communicated with the gel preparation tank, and the outer diameter of a screw of the screw rod is matched with the inner diameter of the powder feeding pipe.
The gel and gel foam dual-purpose fire extinguishing system is characterized in that: the top of gel preparation jar is provided with the interface of intaking, be provided with the water supply branch pipe of being connected with the delivery pipe on the interface of intaking, be provided with the supply valve on the water supply branch pipe.
The gel and gel foam dual-purpose fire extinguishing system is characterized in that: the bottom of gel preparation jar is provided with out the liquid interface, go out to be provided with on the liquid interface and be connected with the drainage branch pipe of drainage tube, be provided with the drainage valve on the drainage branch pipe.
The gel and gel foam dual-purpose fire extinguishing system is characterized in that: the gel preparation tank is characterized in that a first exhaust valve is arranged on the water supply pipe, a second exhaust valve is further arranged at the bottom of the gel preparation tank, and a pulp pump is arranged on the drainage pipe.
The gel and gel foam dual-purpose fire extinguishing system is characterized in that: the rotating shaft is positioned at the center of the gel preparation tank, the stirring blades are multiple in number, and the stirring blades are symmetrically distributed on two sides of the rotating shaft.
Meanwhile, the invention also discloses a method for extinguishing fire by using the fire extinguishing system, which has the advantages of simple steps and convenient operation, and the gel is prepared by using N gel preparation tanks in a circulating way, so that the continuous supply of the gel and gel foam is ensured, the fire extinguishing efficiency is effectively improved, and the safety of lives and property of people is ensured, and the method is characterized by comprising the following steps:
step one, judging the type of fire working conditions and selecting a fire extinguishing scheme: dividing the site situation of the A type fire into two working conditions, wherein the first working condition is an indoor fire site, and the second working condition is an outdoor fire site;
executing the second step when the fire scene condition is the first working condition, and executing the third step when the fire scene condition is the second working condition;
step two, extinguishing fire by gel, which comprises the following specific steps:
step 201, preparing gel: setting N gel preparation tanks 1 in a fire-fighting transport tool, sequentially marking as a first gel preparation tank and a second gel preparation tank …, starting the first gel preparation tank and the second gel preparation tank to prepare gel on the way of reaching a fire scene, after reaching the fire scene, preferentially using the gel in the first gel preparation tank, starting the third gel preparation tank to prepare gel, and when a liquid level meter 4 in the first gel preparation tank displays that the gel capacity in the gel preparation tank reaches the minimum capacity threshold value, using the gel in the second gel preparation tank until the gel in the N-1 gel preparation tank is used, and repeatedly starting the first gel preparation tank to prepare gel; wherein N is a positive integer greater than or equal to 3;
the process of preparing the gel from each gel preparation tank is as follows: injecting water into the gel preparation tank by utilizing a water supply pipe at the same time until the real-time water quantity value acquired by a liquid level meter reaches the maximum capacity threshold value, starting a second motor, enabling gel powder of a standard unit in a hopper to enter the gel preparation tank through a powder supply pipe under the pushing of a screw rod, starting a first motor, enabling a stirring blade to continuously stir, and completing gel preparation work;
step 202, connecting a fire-fighting lance: the bottom of the gel preparation tank is provided with a liquid outlet port, a drainage branch pipe connected with a drainage pipe is arranged on the liquid outlet port, and a drainage valve is arranged on the drainage branch pipe;
connecting a fire-fighting lance with the gel fire-extinguishing pipe, opening the drainage valve and the first gel valve, and keeping the second gel valve in a closed state to start fire-extinguishing work;
step three, extinguishing fire by gel foam, which comprises the following specific steps:
step 301, preparing gel: preparation is performed as described in step 201;
step 302, preparing gel foam: opening the drainage valve and the second gel valve to enable gel to enter the foam generation chamber, opening the air compressor and closing the check valve to enable air and gel to perform foaming reaction in the foam generation chamber to generate gel foam;
step 302, connecting a fire-fighting lance: connecting the fire-fighting lance with the gel foam fire-extinguishing pipe, and keeping the first gel valve in a closed state to start fire-extinguishing work;
the fire extinguishing method of the gel and gel foam dual-purpose fire extinguishing system is characterized by comprising the following steps of: the highest capacity threshold is the fire-fighting lance per second60 times of the flow speed, the total amount of gel powder in the hopper is V 1 The gel preparation tank has a gel powder weight V required for each configuration of gel 2 ，V 1 ＝P×V 2 The weight of water required by each gel preparation tank for preparing gel is V 3 ，
And->
Wherein P is a positive integer greater than or equal to 1, the flow rate of the fire-fighting lance is 2L/s, namely the highest capacity threshold is 120L, and the lowest capacity threshold is 5L.
The fire extinguishing method of the gel and gel foam dual-purpose fire extinguishing system is characterized by comprising the following steps of: in the first step, the single powder feeding time of the powder feeding assembly is not more than 5s, and the single water feeding time of the water supply pipe is not more than 30s.
The fire extinguishing method of the gel and gel foam dual-purpose fire extinguishing system is characterized by comprising the following steps of: the upper part of the side wall of the gel preparation tank is provided with a water inlet connector, a water supply branch pipe connected with a water supply pipe is arranged on the water inlet connector, and a water supply valve is arranged on the water supply branch pipe;
opening the water supply valve of the nth gel preparation tank, and supplying water to the nth gel preparation tank through a water supply branch pipe; wherein, N' is more than or equal to 1 and less than or equal to N.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the water supply pipe and the powder supply assembly are connected to the gel preparation tank, so that water and gel powder are conveniently supplied to the gel preparation tank, the stirring blade is arranged in the gel preparation tank, the first motor is used for driving the rotating shaft to rotate, so that the stirring blade is driven to stir the water and the gel powder in the gel preparation tank, the gel preparation work is completed, the foam generating chamber is connected to the gel foam fire extinguishing pipe, so that air and gel are conveniently foamed by the foam generating chamber, the gel foam preparation work is completed, and the gel or gel foam is conveniently and timely prepared according to the scene fire condition, so that the gel fire extinguishing technology can be widely applied to fire sites, and the practicability is strong.
2. According to the invention, the two ends of the drainage tube are respectively connected with the gel fire extinguishing tube and the gel foam fire extinguishing tube, so that the fire extinguishing scheme can be conveniently adjusted at any time on site, the fire-fighting lance can be installed on the gel fire extinguishing tube or the gel foam fire extinguishing tube, the corresponding gel or gel foam fire extinguishing can be used, the fire-fighting lance can also be installed on the gel fire extinguishing tube and the gel foam fire extinguishing tube at the same time, and the gel foam fire extinguishing can be simultaneously used, so that the timely switching of the gel and the gel foam is realized, the flexibility is strong, the operation process is reliable and stable, and the use effect is good.
3. According to the invention, the screw rod is matched with the powder feeding pipe, gel powder in the hopper can enter the powder feeding pipe under the influence of gravity and is positioned between screws of the screw rod, when the screw rod is driven by the second motor to axially rotate, the gel powder between the screws of the screw rod can be pushed forward, the gel powder enters the gel preparation tank through the powder feeding pipe, and when the second motor stops working, the screw rod is stationary, and most of the gel powder is limited in the powder feeding pipe by the screws, so that the limitation of the gel powder supply amount in each gel configuration is realized.
4. According to the invention, by arranging the liquid level meter, the residual quantity of the gel in the gel preparation tank and the injection quantity of water during gel preparation are conveniently prompted for workers, so that insufficient stirring and gel quality reduction which are easily caused by excessive water supply during gel preparation are avoided, and the problem that a fire-fighting lance can not spray the gel is avoided, so that the low-efficiency working mode of another gel preparation tank is started, and the popularization and the use are facilitated.
5. The method is simple, clear in steps, suitable for first working condition fire types such as indoor building fire and second working condition fire types with unknown outdoor large-area fire and fire source positions, ensures continuous supply of gel and gel foam by using the N gel preparation tanks, effectively improves fire extinguishing efficiency, is beneficial to ensuring life and property safety of people, effectively ensures that the state of the gel accords with fire extinguishing standards by preparing the gel on site, and avoids the problems of uneven gel land and defoaming of the gel foam caused by long-time stirring or long-time standing.
In summary, the gel and gel foam dual-purpose fire extinguishing system adopted by the invention realizes the preparation of gel and gel foam at any time through the cooperation of the gel preparation tank, the powder feeding component and the gel foam preparation component, is efficient and stable, is convenient for flexibly adjusting the fire extinguishing scheme according to the scene fire situation, and enables the gel fire extinguishing technology to be widely applied to the scene of fire; the method has the advantages of simple steps, convenient operation, suitability for various fire working condition types, capability of circularly preparing the gel by utilizing the N gel preparation tanks, capability of ensuring continuous supply of the gel and gel foam, capability of effectively improving the fire extinguishing efficiency, convenience for ensuring the life and property safety of people and strong practicability.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the powder feeding assembly according to the present invention.
Fig. 3 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1-a gel preparation tank; 2-a water inlet port; 3-a liquid outlet interface;
4-a liquid level meter; 5-a rotating shaft; 6, stirring blades;
7-a first motor; 8-a water supply pipe; 9-a first exhaust valve;
10-a second exhaust valve; 11-a water supply branch pipe; 12-a water supply valve;
13, a hopper; 14-channel steel; 15-a flat plate;
16-a second motor; 17-a screw rod; 18-a powder supply pipe;
19-drainage branch pipes; 20-a drainage valve; 21-drainage tube;
22-a pulp pump; 23-gel fire extinguishing pipe; 24-a first gel valve;
25-gel foam fire extinguishing pipe; 26-a second gel valve; 27-a foam generating chamber;
28-check valve; 29-an air compressor.
Detailed Description
As shown in fig. 1 and 2, the dual-purpose fire extinguishing system for gel and gel foam of the present invention comprises a plurality of gel preparation tanks 1, a water supply pipe 8 for supplying water to the plurality of gel preparation tanks 1, a powder supply assembly arranged at the upper part of the gel preparation tanks 1, a drainage pipe 21 connected with the lower part of the plurality of gel preparation tanks 1 and a gel foam preparation assembly connected with the drainage pipe 21, wherein a liquid level meter 4 and a rotating shaft 5 are arranged in the gel preparation tanks 1, the liquid level meter 4 is positioned at the bottom of the gel preparation tanks 1, one end of the rotating shaft 5 extending out of the gel preparation tanks 1 is connected with a first motor 7, a stirring blade 6 is arranged at the part of the rotating shaft 5 extending into the gel preparation tanks 1, one end of the drainage pipe 21 is respectively provided with a gel fire extinguishing pipe 23 and a gel foam fire extinguishing pipe 25 for connecting with a fire gun, a first gel valve 24 is arranged on the gel fire extinguishing pipe 23, and a second gel valve 26 is arranged on the gel foam fire extinguishing pipe 25.
The powder feeding assembly comprises a support arranged at the top of the gel preparation tank 1, a hopper 13 arranged on the support, a screw rod 17 and a powder feeding pipe 18, gel powder is filled in the hopper 13, one end of the screw rod 17 is connected with a second motor 16, the other end of the screw rod 17 stretches into the powder feeding pipe 18, a through hole connected with the lower part of the hopper 13 is formed in the middle of the powder feeding pipe 18, and the other end of the powder feeding pipe 18 stretches into the gel preparation tank 1.
The gel foam preparation assembly comprises a foam generation chamber 27 arranged on the gel foam fire extinguishing pipe 25 and an air compressor 29 connected with the foam generation chamber 27, and a check valve 28 is arranged between the foam generation chamber 27 and the air compressor 29.
When the fire extinguishing device is used, the water supply pipe 8 and the powder supply assembly are connected to the gel preparation tank 1, so that water and gel powder can be conveniently supplied to the gel preparation tank 1, the stirring blade 6 is arranged in the gel preparation tank 1, the first motor 7 is used for driving the rotating shaft 5 to rotate, so that the stirring blade 6 is driven to stir the water and the gel powder in the gel preparation tank 1, the gel preparation work is completed, the gel can be used as a fire extinguishing agent of a main fire fighting truck, and can be also provided to other mobile fire extinguishing equipment.
During actual use, through connecting gel fire tube 23 and gel foam fire tube 25 respectively at the both ends of drainage tube 21, be convenient for adjust the scheme of putting out a fire at any time on the scene, can install the fire-fighting lance on gel fire tube 23 or gel foam fire tube 25, use corresponding gel or gel foam to put out a fire, also can use gel and gel foam to put out a fire simultaneously on gel fire tube 23 and gel foam fire tube 25, the timely switching of gel and gel foam has been realized simultaneously, the flexibility is strong, the operation process is reliable and stable, excellent in use effect, through setting up check valve 28 between foam generation chamber 27 and air compressor machine 29, be convenient for when not needing to prepare the gel foam, prevent the air in the pipeline from getting into foam generation chamber 27, the job stabilization of foam generation chamber 27 has been improved.
During actual use, through setting up level gauge 4, be convenient for point out the staff gel preparation jar 1 in the surplus of gel and the injection volume of water when preparing the gel, not only avoided the gel to prepare the time supply too much, the stirring that easily causes is insufficient, gel quality decline, avoided the fire-fighting lance to spray the gel again, just started the inefficiency mode of another gel preparation jar 1, caused work efficiency low.
It should be noted that, the liquid level meter 4, the first motor 7 and the second motor 16 are all connected with the controller in a wireless way, and the highest capacity threshold and the lowest capacity threshold are stored in the controller, wherein the controller is a PLC programmable controller, and the controller is in two-way communication with the upper computer through the wireless communication module, so that the staff can conveniently adjust the gel preparation process at any time.
In this embodiment, the support includes two channel steels 14 arranged along the length direction of the screw rod 17, and a flat plate 15 disposed on the channel steels 14, where the flat plate 15 is provided with a second motor 16 and a powder feeding pipe 18; the powder feeding pipe 18 is an L-shaped pipe, one side of the L-shaped pipe is positioned on the flat plate 15, the other side of the L-shaped pipe is vertically downward and communicated with the gel preparation tank 1, and the outer diameter of a screw of the screw rod 17 is matched with the inner diameter of the powder feeding pipe 18.
In actual use, gel powder in the hopper 13 can enter the powder feeding pipe 18 under the influence of gravity by arranging the screw rod 17 to be matched with the powder feeding pipe 18, and is positioned between screws of the screw rod 17, when the screw rod 17 is driven by the second motor 16 to axially rotate, the gel powder between the screws of the screw rod 17 can be pushed forward, and enters the gel preparation tank 1 through the powder feeding pipe 18, when the second motor 16 stops working, the screw rod 17 is stationary, and most of the gel powder is limited in the powder feeding pipe 18 by the screws of the screw rod 17, so that the limitation of the gel powder supply amount in each gel configuration is realized, the gel powder and water ratio is accurate, and the fire extinguishing performance of the gel fire extinguishing agent is effectively ensured.
The gel preparation tank 1, the channel steel 14 and the flat plate 15 are welded, so that the connection stability is high, and the gel powder can absorb moisture in the air and become blocky, so that the physical property is changed to influence the use function, and the hopper 13 is a sealed hopper with a cover, so that the gel powder can be stored conveniently, and the gel powder is prevented from being polluted and damped.
In this embodiment, the top of the gel preparation tank 1 is provided with a water inlet port 2, a water supply branch pipe 11 connected with a water supply pipe 8 is arranged on the water inlet port 2, and a water supply valve 12 is arranged on the water supply branch pipe 11.
In this embodiment, the bottom of the gel preparation tank 1 is provided with a liquid outlet port 3, a drainage branch pipe 19 connected with a drainage pipe 21 is provided on the liquid outlet port 3, and a drainage valve 20 is provided on the drainage branch pipe 19.
In this embodiment, the water supply pipe 8 is provided with a first exhaust valve 9, the bottom of the gel preparation tank 1 is further provided with a second exhaust valve 10, and the drainage pipe 21 is provided with a slurry pump 22.
During the in-service use, through set up first discharge valve 9 on delivery pipe 8, the air in delivery pipe 8 of being convenient for is avoided delivery pipe 8 to influence the water supply velocity of flow because of the air is too much, sets up second discharge valve 10 in the bottom of gel preparation jar 1, bubble and the a small amount of gas of getting into through delivery pipe 8 that produce when being convenient for discharge stirring gel, avoid the interior air pressure of gel preparation jar 1 too big, cause equipment damage.
In this embodiment, the rotating shaft 5 is located at the center of the gel preparation tank 1, the number of the stirring blades 6 is plural, and the plurality of stirring blades 6 are symmetrically distributed on two sides of the rotating shaft 5.
During actual use, through setting up a plurality of stirring vane 6 symmetric distribution in the both sides of pivot 5, be convenient for evenly stir the gel, and the bottom of pivot 5 is close the bottom of gel preparation jar 1, and a plurality of stirring vane 6 are arranged from the bottom of pivot 5 by supreme, and the distance between stirring vane 6 of the upper strata and the bottom of gel preparation jar 1 is three-quarters of gel preparation jar 1 clear height.
A fire extinguishing method of a dual purpose gel and gel foam fire extinguishing system as shown in fig. 3, the method comprising the steps of:
step one, judging the type of fire working conditions and selecting a fire extinguishing scheme: dividing the site situation of the A type fire into two working conditions, wherein the first working condition is an indoor fire site, and the second working condition is an outdoor fire site; and when the fire scene condition is the first working condition, executing the second step, and when the fire scene condition is the second working condition, executing the third step.
When in actual use, the fire expansion space of the first working condition is small, the gel is high-temperature resistant and low in heating water loss speed, the viscosity of the gel is increased along with the time, the gel can be accumulated upwards in a limited space, the wall hanging and covering performance are good, a protective layer with high density and high water content can be formed on a combustion object, the contact between oxygen and coal is prevented, the cooling performance is good, and a remarkable fire prevention and extinguishing effect is achieved on the fire type of the first working condition; the second working condition comprises the conditions of grassland fire, forest fire, spontaneous combustion of coal in a high-rise area, unknown fire source position and the like, and the gel foam has high water content, good foam stability, good fluidity before forming, good water retention and cooling after forming, and good effect on fire extinguishment and control of the second working condition.
Step two, extinguishing fire by gel, which comprises the following specific steps:
step 201, preparing gel: setting N gel preparation tanks 1 in a fire-fighting transport tool, sequentially marking as a first gel preparation tank and a second gel preparation tank …, starting the first gel preparation tank and the second gel preparation tank to prepare gel on the way of reaching a fire scene, after reaching the fire scene, preferentially using the gel in the first gel preparation tank, starting the third gel preparation tank to prepare gel, and when a liquid level meter 4 in the first gel preparation tank displays that the gel capacity in the gel preparation tank reaches the minimum capacity threshold value, using the gel in the second gel preparation tank until the gel in the N-1 gel preparation tank is used, and repeatedly starting the first gel preparation tank to prepare gel; wherein N is a positive integer greater than or equal to 3.
The procedure for preparing the gel for each gel preparation tank 1 is: the water supply pipe 8 is utilized to fill water into the gel preparation tank 1 until the real-time water content value acquired by the liquid level meter 4 reaches the highest capacity threshold value, the second motor 16 is started, gel powder of a standard unit in the hopper 13 enters the gel preparation tank 1 through the powder supply pipe 18 under the pushing of the screw rod 17, the first motor 7 is started, and the stirring blade 6 is continuously stirred, so that the gel preparation work is completed.
In this embodiment, n=3 is specifically described, and the first gel preparation tank 1 and the second gel preparation tank 1 are started to prepare gel on the way to the fire scene, so that the gel in both gel preparation tanks 1 is prepared after reaching the fire scene.
When the fire extinguishing work is carried out, the gel in the first gel preparation tank 1 is preferentially used, and the third gel preparation tank 1 is started to prepare the gel at the same time, when the gel in the first gel preparation tank 1 is used, namely, the liquid level meter 4 displays that the gel capacity in the gel preparation tank 1 reaches the minimum capacity threshold value, the gel in the second gel preparation tank 1 is started to be used, the first gel preparation tank 1 is started to prepare the gel repeatedly, and three gel preparation tanks 1 are started to prepare the gel in a circulating way until the fire extinguishing work is completed.
In this embodiment, the maximum capacity threshold is 60 times of the flow rate per second of the fire-fighting lance, and the total amount of gel powder in the hopper 13 is V 1 The gel preparation tank 1 has a gel powder weight V required for each gel preparation 2 ，V 1 ＝P×V 2 The weight of water required for each gel preparation tank 1 to prepare gel is as follows
And->
Wherein P is a positive integer greater than or equal to 1, the flow rate of the fire-fighting lance is 2L/s, namely the highest capacity threshold is 120L, and the lowest capacity threshold is 5L.
In actual use, V 2 And V 3 All are greater than zero, take
That is, 120L of water is injected into the gel preparation tank 1 and 0.3L of gel powder is pushed in at the same time when the gel is prepared, and the first motor 7 is started to continuously stir the stirring blade 6 at a high speed for 2 minutes, so that the gel preparation work is completed.
In this embodiment, the water supply valve 12 of the nth 'gel preparation tank is opened, and water is supplied to the nth' gel preparation tank through the water supply branch pipe 11; wherein, N' is more than or equal to 1 and less than or equal to N.
In this embodiment, the single feeding time of the feeding assembly is not more than 5s, and the single feeding time of the water supply pipe 8 is not more than 30s.
In actual use, the powder supply and the water supply can be synchronously performed, and the liquid level meter 4 synchronously acquires the capacity data of the liquid in the gel preparation tank 1 and transmits the capacity data to the controller.
Step 202, connecting a fire-fighting lance: the fire-fighting lance is connected with the gel fire-extinguishing pipe 23, the drainage valve 20 and the first gel valve 24 are opened, and the second gel valve 26 is kept closed, so that the fire-fighting work is started.
Step three, extinguishing fire by gel foam, which comprises the following specific steps:
step 301, preparing gel: the preparation is carried out as described in step 201.
Step 302, preparing gel foam: the drainage valve 20 and the second gel valve 26 are opened to enable gel to enter the foam generating chamber 27, the air compressor 29 is opened, the check valve 28 is closed, and air and gel are subjected to foaming reaction in the foam generating chamber 27 to generate gel foam.
Step 302, connecting a fire-fighting lance: the fire-fighting lance is connected to the gel foam fire-extinguishing pipe 25, and the first gel valve 24 is kept closed, and the fire-fighting work is started.
After the fire-fighting work is completed, the first motor 7, the drainage valve 20, the first gel valve 24, the second gel valve 26 and the air compressor 29 are closed, and the check valve 28 is opened, so that the gel and gel foam are stopped being prepared.
When in actual use, the gel is circularly prepared by using the N gel preparation tanks 1, so that the continuous uninterrupted gel supply is ensured, the fire extinguishing efficiency is effectively improved, the life and property safety of people is favorably ensured, the gel is prepared on site, the condition of the gel is effectively ensured to meet the fire extinguishing standard, the problems of uneven gel texture and defoaming of gel foam caused by long-time stirring or long-time standing are avoided, the operation is simple, the practicability is strong, and the gel fire extinguishing technology is widely applied to fire sites.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
1. A fire extinguishing method of a gel and gel foam dual-purpose fire extinguishing system, which is characterized in that: utilize gel and dual-purpose fire extinguishing systems of gel foam to put out a fire, gel and dual-purpose fire extinguishing systems of gel foam include a plurality of gel preparation jars (1), to a plurality of delivery pipe (8) that gel preparation jar (1) supplied water, set up give powder subassembly, connect a plurality of gel preparation jar (1) lower part drainage tube (21) and with the gel foam preparation subassembly that drainage tube (21) are connected, be provided with level gauge (4) and pivot (5) in gel preparation jar (1), level gauge (4) are located the bottom of gel preparation jar (1), the one end that pivot (5) stretched out gel preparation jar (1) is connected with first motor (7), be provided with stirring vane (6) on the position that pivot (5) stretched into gel preparation jar (1), the one end of drainage tube (21) is provided with gel fire extinguishing pipe (23) and gel foam extinguishing pipe (25) that are used for being connected with the fire gun respectively, be provided with gel extinguishing pipe (24) on the gel extinguishing pipe (23), be provided with gel extinguishing pipe (25) on the first valve (25);
the powder feeding assembly comprises a support arranged at the top of the gel preparation tank (1), a hopper (13) arranged on the support, a screw rod (17) and a powder feeding pipe (18), gel powder is filled in the hopper (13), one end of the screw rod (17) is connected with a second motor (16), the other end of the screw rod (17) stretches into the powder feeding pipe (18), a through hole connected with the lower part of the hopper (13) is formed in the middle of the powder feeding pipe (18), and the other end of the powder feeding pipe (18) stretches into the gel preparation tank (1);
the gel foam preparation assembly comprises a foam generation chamber (27) arranged on the gel foam fire extinguishing pipe (25) and an air compressor (29) connected with the foam generation chamber (27), and a check valve (28) is arranged between the foam generation chamber (27) and the air compressor (29);
the method comprises the following steps:
step one, judging the type of fire working conditions and selecting a fire extinguishing scheme: dividing the site situation of the A type fire into two working conditions, wherein the first working condition is an indoor fire site, and the second working condition is an outdoor fire site;
executing the second step when the fire scene condition is the first working condition, and executing the third step when the fire scene condition is the second working condition;
step two, extinguishing fire by gel, which comprises the following specific steps:
step 201, preparing gel: setting N gel preparation tanks (1) in a fire-fighting transport tool, sequentially marking as a first gel preparation tank and a second gel preparation tank …, starting the first gel preparation tank and the second gel preparation tank to prepare gel on the way of reaching a fire scene, after reaching the fire scene, preferentially using the gel in the first gel preparation tank, starting the third gel preparation tank to prepare gel, and when a liquid level meter (4) in the first gel preparation tank displays that the gel capacity in the gel preparation tank reaches a minimum capacity threshold value, using the gel in the second gel preparation tank until the gel in the N-1 gel preparation tank is used, and repeatedly starting the first gel preparation tank to prepare gel; wherein N is a positive integer greater than or equal to 3;
the gel preparation process of each gel preparation tank (1) comprises the following steps: injecting water into the gel preparation tank (1) by utilizing a water supply pipe (8) until the real-time water quantity value acquired by a liquid level meter (4) reaches the highest capacity threshold value, starting a second motor (16), enabling gel powder in a hopper (13) to enter the gel preparation tank (1) through a powder supply pipe (18) under the pushing of a screw rod (17), starting a first motor (7), and enabling a stirring blade (6) to continuously stir to finish gel preparation work;
step 202, connecting a fire-fighting lance: the bottom of the gel preparation tank (1) is provided with a liquid outlet port (3), the liquid outlet port (3) is provided with a drainage branch pipe (19) connected with a drainage pipe (21), and the drainage branch pipe (19) is provided with a drainage valve (20);
connecting a fire-fighting lance with the gel fire-extinguishing pipe (23), opening the drainage valve (20) and the first gel valve (24), and keeping the second gel valve (26) in a closed state to start fire-fighting operation;
step three, extinguishing fire by gel foam, which comprises the following specific steps:
step 301, preparing gel: preparation is performed as described in step 201;
step 302, preparing gel foam: opening the drainage valve (20) and the second gel valve (26) to enable gel to enter the foam generation chamber (27), opening the air compressor (29) and closing the check valve (28) to enable air and the gel to perform foaming reaction in the foam generation chamber (27) to generate gel foam;
step 302, connecting a fire-fighting lance: connecting the fire-fighting lance with a gel foam fire-extinguishing pipe (25) and keeping a first gel valve (24) in a closed state to start fire-fighting and fire-extinguishing work;
the support comprises two channel steels (14) which are distributed along the length direction of the screw rod (17), and a flat plate (15) which is arranged on the channel steels (14), wherein a second motor (16) and a powder feeding pipe (18) are arranged on the flat plate (15);
the powder feeding pipe (18) is an L-shaped pipe, one side of the L-shaped pipe is positioned on the flat plate (15), the other side of the L-shaped pipe is vertically downward and is communicated with the gel preparation tank (1), and the outer diameter of a screw of the screw rod (17) is matched with the inner diameter of the powder feeding pipe (18);
the highest capacity threshold is 60 times of the flow rate of the fire-fighting lance per second, and the total amount of gel powder in the hopper (13) is V 1 The gel preparation tank (1) has the weight of gel powder V required by each gel preparation 2 ，V 1 ＝P×V 2 The weight of water required by each gel preparation tank (1) for preparing gel is V 3 ，
And->
Wherein P is a positive integer greater than or equal to 1, the flow rate of the fire-fighting lance is 2L/s, namely the highest capacity threshold is 120L, and the lowest capacity threshold is 5L.
2. A dual use fire suppression system for gel and gel foam according to claim 1, wherein: the top of gel preparation jar (1) is provided with into water interface (2), be provided with on the water interface (2) with delivery pipe (8) connected water supply branch pipe (11), be provided with water supply valve (12) on water supply branch pipe (11).
3. A dual use fire suppression system for gel and gel foam according to claim 1, wherein: the gel preparation tank is characterized in that a liquid outlet port (3) is formed in the bottom of the gel preparation tank (1), a drainage branch pipe (19) connected with a drainage pipe (21) is arranged on the liquid outlet port (3), and a drainage valve (20) is arranged on the drainage branch pipe (19).
4. A dual use fire suppression system for gel and gel foam according to claim 1, wherein: the gel preparation tank is characterized in that a first exhaust valve (9) is arranged on the water supply pipe (8), a second exhaust valve (10) is further arranged at the bottom of the gel preparation tank (1), and a pulp pumping pump (22) is arranged on the drainage pipe (21).
5. A dual use fire suppression system for gel and gel foam according to claim 1, wherein: the rotating shaft (5) is positioned at the center of the gel preparation tank (1), the stirring blades (6) are multiple in number, and the stirring blades (6) are symmetrically distributed on two sides of the rotating shaft (5).
6. A method of extinguishing a gel and gel foam dual use fire extinguishing system according to claim 1, wherein: in the first step, the single powder feeding time of the powder feeding assembly is not more than 5s, and the single water feeding time of the water supply pipe (8) is not more than 30s.
7. A method of extinguishing a dual use gel and gel foam fire extinguishing system according to claim 1, wherein: the gel preparation tank is characterized in that a water inlet connector (2) is arranged at the upper part of the side wall of the gel preparation tank (1), a water supply branch pipe (11) connected with a water supply pipe (8) is arranged on the water inlet connector (2), and a water supply valve (12) is arranged on the water supply branch pipe (11);
opening the water supply valve (12) of the nth gel preparation tank, and supplying water to the nth gel preparation tank through a water supply branch pipe (11); wherein, N' is more than or equal to 1 and less than or equal to N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102417.3A CN114470574B (en) | 2022-01-27 | 2022-01-27 | Gel and gel foam dual-purpose fire extinguishing system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102417.3A CN114470574B (en) | 2022-01-27 | 2022-01-27 | Gel and gel foam dual-purpose fire extinguishing system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114470574A CN114470574A (en) | 2022-05-13 |
| CN114470574B true CN114470574B (en) | 2023-05-02 |
Family
ID=81476796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210102417.3A Active CN114470574B (en) | 2022-01-27 | 2022-01-27 | Gel and gel foam dual-purpose fire extinguishing system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114470574B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979552B (en) * | 2012-12-05 | 2015-04-01 | 山东科技大学 | Device for preventing coal from burning spontaneously and rapidly extinguishing under coal mine and working method thereof |
| CN105344040B (en) * | 2013-10-10 | 2018-10-02 | 中国矿业大学 | A kind of frothy gel preparation facilities of prevention spontaneous combustionof coal |
| CN203663289U (en) * | 2013-10-25 | 2014-06-25 | 中国矿业大学 | Foam gel preparation device for fire prevention and extinguishing of mines |
| CN205163972U (en) * | 2015-06-08 | 2016-04-20 | 徐州吉安矿业科技有限公司 | Foam gel preparation system of prevention and cure coal spontaneous combustion |
| CN109372569B (en) * | 2018-12-29 | 2021-01-29 | 西安科技大学 | Mining fire prevention and extinguishing device capable of adapting to different mine fires |
| CN110115812A (en) * | 2019-04-19 | 2019-08-13 | 西安科技大学 | A kind of spiral atomization gel foam generating device |
| CN111013055A (en) * | 2019-12-26 | 2020-04-17 | 安徽理工大学 | Mobile gel foam intelligent generation device and use method thereof |
| CN213434288U (en) * | 2020-09-03 | 2021-06-15 | 威特龙消防安全集团股份公司 | Gel liquid preparation control mechanism |
| 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 |
| CN112891782A (en) * | 2021-02-04 | 2021-06-04 | 安徽理工大学 | Automatic mining gel foam fire prevention and extinguishing system and using method |
-
2022
- 2022-01-27 CN CN202210102417.3A patent/CN114470574B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114470574A (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3590580B1 (en) | Foam production method, fire extinguishing method, and foam extinguishing appliance | |
| CN108525162B (en) | Foam generating method and application thereof and fire extinguishing and fighting method | |
| CN105344040B (en) | A kind of frothy gel preparation facilities of prevention spontaneous combustionof coal | |
| CN106362332A (en) | Full-size three-phase-jet foam generating device | |
| CN101767975A (en) | Composite gel fire control material for treating coal seam fire | |
| CN201840804U (en) | Foam producing device used for fire experiment | |
| US20090194605A1 (en) | Method for creating a gas-drop jet and a device for its implementation | |
| CN203154684U (en) | Compressed gas foam extinguishing system for fire fighting truck | |
| CN201211403Y (en) | Forced foam generator | |
| CN114470574B (en) | Gel and gel foam dual-purpose fire extinguishing system and method | |
| CN110812771A (en) | Foam fire prevention and extinguishing material and preparation method and application thereof | |
| CN103883347A (en) | Multifunctional liquid foam used for underground coal mine and using method thereof | |
| CN203620127U (en) | Solidified foam fluid generation device for fire prevention and extinguishment of coal mines | |
| CN103232217A (en) | Mine loess composite gel fire preventing and extinguishing material and preparation method of material | |
| CN112546502A (en) | Dry powder fire suppression system and method | |
| CN102606189A (en) | Fire extinguishing and cooling system for coal cavities and loose areas in fire district of coal field | |
| CN104524717A (en) | Foam fire-extinguishing device with internal screw type air compressor | |
| CN110448838A (en) | Floating plate sealing ring extinguishing device and method | |
| CN206880988U (en) | Dry powder fire-engine | |
| CN203663776U (en) | Parallel foaming system for jet flow self-absorption foaming agent | |
| CN103938526B (en) | A kind of atomization homogeneous foam asphalt generators and foaming method | |
| CN2722962Y (en) | A class foam first extinguisher of compressed air | |
| CN220801742U (en) | Euro silo device with foam fire extinguishing function | |
| RU2684305C1 (en) | Method for creation of gas-drop jet and installation for implementation thereof | |
| CN112546499A (en) | Movable compressed air foam fire extinguishing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |