CN207024429U - A kind of LNG factories automatic fire extinguisher - Google Patents
A kind of LNG factories automatic fire extinguisher Download PDFInfo
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- CN207024429U CN207024429U CN201720949240.5U CN201720949240U CN207024429U CN 207024429 U CN207024429 U CN 207024429U CN 201720949240 U CN201720949240 U CN 201720949240U CN 207024429 U CN207024429 U CN 207024429U
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- foam
- liquid tank
- transmission ejector
- venturi transmission
- fire extinguisher
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Abstract
The utility model discloses a kind of LNG factories automatic fire extinguisher, including electric butterfly valve, cryogenic probe, Venturi transmission ejector, foam maker, vacuum meter, stop valve, pipeline, foam liquid tank, level sensor and foam transit tube, described Venturi transmission ejector one end is connected by water-supply-pipe with fire pump, Venturi transmission ejector throat is connected by suction pipe with foam liquid tank, the other end of Venturi transmission ejector is connected with foam maker, foam maker connects with foam transit tube, foam is delivered to collecting tank by foam transit tube caused by foam maker, vacuum meter and stop valve are housed above foam liquid tank, cryogenic probe is provided with collecting tank, level sensor is provided with foam liquid tank.The utility model fire-fighting efficiency is high, reduces the use of foam solution, reduces the testing cost of full factory's fixed froth installation, simple in construction, easy to use, beneficial to popularization.
Description
Technical field
Technical field of fire control is the utility model is related to, specifically a kind of LNG factories automatic fire extinguisher.
Background technology
Liquefied natural gas（Abbreviation LNG）It is a kind of efficient, cleaning energy, stores and transport typically under normal temperature, low pressure.
It is dangerous big, difficulty of putting out a fire to save life and property is big because the fire that LNG leakages trigger, therefore to ensure enterprise's production safety, LNG storage tank area,
Process unit area and fill area and be designed with LNG collecting tanks, each collecting tank is equipped with fixed fixed froth installation.
Existing LNG extinguishing devices need to be manually started and stopped, and automaticity is low, and fire-fighting efficiency is low.Full factory foam goes out
The periodic detection of fiery device, the detection method of use are detected by platform, manually starter successively, after waiting several minutes of plant running
Arresting stop, this detection mode detection time length, foam solution consumption is big, enterprise fire fighting cost height, burden weight is caused, for drop
The detection of extinguishing device validity is not carried out in accordance with regulations for low cost, some enterprises, adds the frequency of accident generation, and expansion is got over
Therefore the harmfulness occurred.
Utility model content
The purpose of this utility model is to provide a kind of LNG automatic fire extinguishers, to solve to propose in above-mentioned background technology
The problem of.It solves the problems, such as that foam solution wastes in full factory's extinguishing device detection process, compared with existing extinguishing device, the dress
It is equipped with the advantages that fire-fighting efficiency is high, foam dosage is few, automaticity is high.
To achieve the above object, the utility model provides following technical scheme：
A kind of LNG factories automatic fire extinguisher, including Venturi transmission ejector, foam maker, water-supply-pipe, foam liquid tank
And foam transit tube, it is characterised in that described Venturi transmission ejector one end is connected by water-supply-pipe with fire pump, Venturi transmission ejector
Throat connected by suction pipe pipeline with foam liquid tank, the Venturi transmission ejector other end is connected with foam maker, foam hair
Raw device connects with foam transit tube, and foam is delivered to collecting tank by foam transit tube caused by foam maker.
As further program of the utility model：The described pipeline being connected with foam liquid tank be provided with vacuum meter and
Stop valve.
As the utility model further scheme：Level sensor is provided with described foam liquid tank.
As the utility model further scheme：Cryogenic probe is provided with described collecting tank.
As the utility model further scheme：The described water-supply-pipe being connected with Venturi transmission ejector is provided with electricity
Dynamic butterfly valve.
Compared with prior art, the beneficial effects of the utility model are：The utility model fire-fighting efficiency is high, reduces foam
The use of liquid, the testing cost of full factory's fixed froth installation is reduced, it is simple in construction, it is easy to use, beneficial to popularization.
Brief description of the drawings
Fig. 1 is the structural representation of LNG automatic fire extinguishers.
In figure：1st, fire pump, 2, water-supply-pipe, 3, electric butterfly valve, 4, Venturi transmission ejector, 5, foam maker, 6, true
Empty table, 7, stop valve, 8, foam liquid tank, 9, level sensor, 10, foam transit tube, 11, collecting tank, 12, cryogenic probe, 13, inhale
Pipe.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Referring to Fig. 1, a kind of LNG factories automatic fire extinguisher, including electric butterfly valve 3, Venturi transmission ejector 4, foam hair
Raw device 5, vacuum meter 6, stop valve 7, foam liquid tank 8, level sensor 9, foam transit tube 10, collecting tank 11, cryogenic probe 12, suction
Pipe 13, described device provide high pressure fire fighting water by fire pump, let out when the cryogenic probe 12 in collecting tank 11 is detected with LNG
During leakage, electric butterfly valve 3 automatically opens up, and fire water enters Venturi transmission ejector 4 by water-supply-pipe 2, and high pressure fire fighting water passes through literary mound
In injector 4 when in its throat form parital vacuum, foam solution is inhaled from foam liquid tank 8 using uninterrupted vacuum
Enter in Venturi transmission ejector 4, foam solution enters foam maker 5 after being sufficiently mixed by a certain percentage with fire water, produce foam
Group, foam group is blown into foam transit tube 10 by fan, and foam group is delivered into collecting tank 11 by foam transit tube 10, so as to collecting tank
In LNG carry out foam coverage, when level sensor 9, which detects foam solution, reaches low alarm setting value, i.e., foam solution storage is not
When sufficient, level sensor 9 starts warning device, while locks electric butterfly valve 3, prevents it from opening, to prevent only have water without
The situation of foam produces, and ensures the stability of extinguishing device operation.It is equipped with the pipeline for the suction pipe 12 being connected with foam liquid tank 8
Vacuum meter 6, the numerical value P of now vacuum meter is recorded when device stops putting out a fire1, with P1Full factory's foam fire-fighting can be filled for reference value
Put and carry out closing stop valve 6, do not suck foam detection, to judge the validity and stability of full factory's fixed froth installation, detection
When extinguishing device normal condition under vacuum meter numerical value P should be less than P1If P> P1, it is abnormal to illustrate that the device occurs, need to repair immediately
It is multiple, because foam solution need not be sucked in detection, greatly reduce the use of foam solution.
Operation principle of the present utility model is：Venturi transmission ejector of the present utility model utilizes fluid injection principle, fire-fighting
Water is flowed out by the nozzle at high speeds of Venturi transmission ejector, is sucking indoor formation negative pressure, suction pressure than relatively low foam solution, and
Fire water and foam solution are mixed by a certain percentage, when cryogenic probe is detected with LNG leakages, electric butterfly valve can be beaten automatically
Open, when level sensor, which detects foam solution, reaches low alarm setting value, i.e., foam solution storage deficiency when, detector start alarm
Device, while electric butterfly valve is locked, prevent it from opening, to prevent only having water to be produced without the situation of foam, ensure fire extinguishing dress
The stability of operation is put, mixed liquor under pressure, into the hydraulic turbine in foam producer, then is flowed to by pipeline and sprayed
Mouth, the foam mixing liquid sprayed from nozzle spray to foam screen, and the hydraulic turbine quickly rotates because being under pressure impact and drives fan production
Life is distinguished and admirable, and the mist-like foam mixing liquid on air and foam screen is carried out into mechanical mixture stirring, produces foam group, and by foam
Group's blowout foam producer, be equipped with vacuum meter above foam liquid tank, now vacuum meter is recorded when device stops putting out a fire
Numerical value P1, with P1Closing stop valve can be carried out to full factory's fixed froth installation, foam detection is not sucked, to judge to steep for reference value
The validity and security of foam extinguishing device, vacuum meter numerical value P should be less than P under extinguishing device normal condition during detection1If P>
P1, it is abnormal to illustrate that the device occurs, need to immediately repair, because foam solution need not be sucked in detection, greatly reduce foam solution
Use, high fluoro-protein foam concentrate is placed with foam liquid tank, the fire-fighting principle of fluoroprotein foam and the fire extinguishing of regular-type foam liquid are former
Manage essentially identical, but due to the effect of fluorocarbon surfactant, greatly improve the extinguishing property of foam solution, this foam solution production
Raw high expansion foam blow-off velocity is fast, stability is good.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (5)
1. a kind of LNG factories automatic fire extinguisher, including Venturi transmission ejector, foam maker, water-supply-pipe, foam liquid tank and
Foam transit tube, it is characterised in that described Venturi transmission ejector one end is connected by water-supply-pipe with fire pump, Venturi transmission ejector
Throat is connected by suction pipe pipeline with foam liquid tank, and the Venturi transmission ejector other end is connected with foam maker, and foam occurs
Device connects with foam transit tube, and foam is delivered to collecting tank by foam transit tube caused by foam maker.
2. LNG factories according to claim 1 automatic fire extinguisher, it is characterised in that described with foam liquid tank phase
Suction pipe pipeline even is provided with vacuum meter and stop valve.
3. LNG factories according to claim 1 automatic fire extinguisher, it is characterised in that set in described foam liquid tank
There is level sensor.
4. LNG factories according to claim 1 automatic fire extinguisher, it is characterised in that be provided with described collecting tank low
Temperature probe.
5. LNG factories according to claim 1 automatic fire extinguisher, it is characterised in that described and Venturi transmission ejector
Connected water-supply-pipe is provided with electric butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720949240.5U CN207024429U (en) | 2017-08-01 | 2017-08-01 | A kind of LNG factories automatic fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720949240.5U CN207024429U (en) | 2017-08-01 | 2017-08-01 | A kind of LNG factories automatic fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207024429U true CN207024429U (en) | 2018-02-23 |
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ID=61463328
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720949240.5U Active CN207024429U (en) | 2017-08-01 | 2017-08-01 | A kind of LNG factories automatic fire extinguisher |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448829A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Suction type three-phase froth generating device and methods and applications |
| CN113198130A (en) * | 2021-05-25 | 2021-08-03 | 西安理工大学 | Fire extinguishing system with injection type compressed air foam metering function and using method thereof |
| CN115814312A (en) * | 2022-12-14 | 2023-03-21 | 徐工消防安全装备有限公司 | Compressed air foam lifting jet fire engine |
-
2017
- 2017-08-01 CN CN201720949240.5U patent/CN207024429U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448829A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | Suction type three-phase froth generating device and methods and applications |
| CN113198130A (en) * | 2021-05-25 | 2021-08-03 | 西安理工大学 | Fire extinguishing system with injection type compressed air foam metering function and using method thereof |
| CN115814312A (en) * | 2022-12-14 | 2023-03-21 | 徐工消防安全装备有限公司 | Compressed air foam lifting jet fire engine |
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