CN202909351U - Layout structure for large-scale high expansion foam extinguishing system - Google Patents
Layout structure for large-scale high expansion foam extinguishing system Download PDFInfo
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- CN202909351U CN202909351U CN 201220591521 CN201220591521U CN202909351U CN 202909351 U CN202909351 U CN 202909351U CN 201220591521 CN201220591521 CN 201220591521 CN 201220591521 U CN201220591521 U CN 201220591521U CN 202909351 U CN202909351 U CN 202909351U
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Abstract
The utility model relates to a layout structure for a large-scale high expansion foam extinguishing system. The layout structure is characterized in that governed protection areas are divided into a plurality of subareas which adopt a centralized-control fire pump station and a fire fighting control center, wherein a pressure ratio tank capsule type foam extinguishing device is arranged in every subarea, and stock foam solutions are stored in storage tanks; and high expansion foam generators are arranged in each protection area, and the distance between the fire pump station and every protection area satisfies the requirement that the delay time from alarming to the time when the foam starts to spray out is less than 30 s. Compared with the prior art, the layout structure has the benefits that distances between proportioners and the protection areas are shortened, and the time from start of the extinguishing system to the time when the foam generator starts foam is reduced; pressure water and a foam concentrate are separated by a membrane capsule, so that the service life of the foam concentrate is prolonged; and the fact that the delay time from alarming to the time when the foam starts to spray out is less than 30 s satisfies requirements of international norms.
Description
Technical field
The utility model relates to froth fire extinguishing system design technology field, relates in particular to a kind of arrangement of large-scale high expansion foam fire-extinguishing system.
Background technology
Fire extinguishing system in the hazardous areas such as underground lubrication station, Hydraulic Station and oil cellar of smelter generally generally adopts the high-foaming fire-extinquishing scheme.From receiving definite fire alarm signal to the time that foam maker begins to spurt foam, regulation both starts to foam maker from system and begins to spurt the time of foam less than 30s less than 30s to high expansion foam fire-extinguishing system for the U.S. and DIN.China has all stipulated " high expansion foam fire-extinguishing system is no more than 1min from the delay time that begins to spray to foam of reporting to the police " at " high multiple, medium expansion foam fire extinguishing system design specification " GB50196-93 (version in 2002) and " froth fire extinguishing system design specification " GB50151-2010 now.
Although shorter from the delay time that the foam of reporting to the police begins to spray, more can guarantee as early as possible reliably enforcement fire extinguishing of fire extinguishing system, reduce the loss that fire causes, but for large-scale total flooding high expansion foam fire-extinguishing system, particularly for the fire extinguishing system that each guard plot disperses, volume differs in size, mutual distance is far away, namely to satisfy " delay time that begins to spray to foam is no more than 1min from reporting to the police ", even do not surpass 30s, guarantee again system economy, reasonable, having sizable difficulty, is a great problem in the high expansion foam fire-extinguishing system design.
The normal method for designing that adopts of designer had two kinds in the past: a kind of is in advance water and foam solution to be mixed, and control valve is set respectively outside each guard plot, and foam mixing liquid is filled to method before the guard plot control valve in advance; Another kind is to design a foam dope and a waterpipe to each guard plot respectively, distinguishes the method for Set scale blender and control valve outside each guard plot.All there is drawback in these two kinds of methods: first method, because the degradability of foam solution, after foam solution and water mixed, very fast degraded was lost efficacy, and needed constantly to change foam solution, caused very large waste.Second method, store for a long time foam dope, long-distance transportation through pipeline foam dope and a large amount of Set scale blender with pipeline, foam dope stores in pipeline easily and lost efficacy on the one hand, and construction investment and follow-up maintenance, upkeep cost all increase substantially on the other hand.From the angle analysis of technical security and economy reliability, these two designs are all unreasonable.
Summary of the invention
The purpose of this utility model provides a kind of arrangement of large-scale high expansion foam fire-extinguishing system, overcome the deficiencies in the prior art, for each guard plot disperse, volume differs in size, distant actual features, even begin to spurt the time of foam less than 30s from receiving definite fire alarm signal to foam maker, prolong again the service life of foam solution, reduce the maintenance of construction investment and successive projects.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The arrangement of large-scale high expansion foam fire-extinguishing system is that the jurisdiction guard plot is divided into several subregions, and each subregion adopts a central controlled fire pump station and fire protection control center; Establish fire pump in the fire pump station; Each subregion arranges respectively a cover pressure proportional tank bag type fixed froth installation; In each guard plot, establish high power foam generator; The setting position of the pressure proportional tank bag type fixed froth installation of fire pump station and each subregion satisfies the delay time that begins to spray foam from system alarm to corresponding guard plot foam maker and is no more than 30s;
Fire pump station links to each other with the pressure proportional tank bag type fixed froth installation of each subregion respectively, the pressure proportional tank bag type fixed froth installation of each subregion respectively with corresponding subregion in the set high power foam generator in each guard plot link to each other, on the inlet tube of fire pump outlet, pressure proportional tank bag type fixed froth installation water inlet pipe, foam dope and each guard plot foams mix liquid pipeline, motor-operated control valve and pressure switch are set respectively.
Compared with prior art, the beneficial effects of the utility model are:
1) by whole guard plot is divided into several subregions by appropriate distance, adopt respectively a cover pressure proportional tank bag type fixed froth installation in each subregion, motor-driven valve on the water inlet pipe of each pressure proportional tank bag type fixed froth installation is in pre-action state, adopt a central controlled fire pump station between each subregion, so just shortened the distance of proportioner to the guard plot, reduced from fire extinguishing system and started the time that begins to foam to foam maker.
2) press water and foam dope are separated by the barrier film capsule in tank, and the foam solution sealed storage is difficult for putrid and deterioratedly, has greatly prolonged service life of foam solution.
3) realized being no more than 30s from the delay time that begins to spray to foam of reporting to the police, not only satisfied domestic code requirement, also satisfied the international norm requirement, greatly reduced the maintenance of construction investment and successive projects.
Description of drawings
Fig. 1 is the utility model arrangement example structure schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described further:
Seeing Fig. 1, is the arrangement example structure schematic diagram of the large-scale high expansion foam fire-extinguishing system of the utility model, and the jurisdiction guard plot is divided into several subregions, and each subregion adopts a central controlled fire pump station and fire protection control center; Establish fire pump in the fire pump station; Each subregion arranges respectively a cover pressure proportional tank bag type fixed froth installation (comprise storage tank, barrier film capsule and pressure proportioning tank in the device, store foam dope in the storage tank); In each guard plot, establish high power foam generator, select respectively PFS4 and two kinds of water conservancies of PFS10 to drive foam maker according to size and the technology arrangement situation of guard plot; The setting position of the pressure proportional tank bag type fixed froth installation of fire pump station and each subregion satisfies the delay time that begins to spray foam from system alarm to corresponding guard plot foam maker and is no more than 30s, calculates to determine by waterpower;
The tank volume size of the pressure proportional tank bag type fixed froth installation that each section post adopts, the parameters such as parameter, water and foam dope inlet size of pressure proportioning tank need to be determined respectively according to situations such as the layout of the continuous service time of the technology arrangement of maximum in this a subregion guard plot, foam solution and foam maker and pressure requirements.
Each subregion adopts a central controlled fire pump station, is provided with two fire pumps of a-worker-a-backup in the pumping plant, and the flow of fire pump need to be determined according to the flow of maximum in all guard plots required water in guard plot; The fire water pump lift need to require to determine according to the required pressure of the foam maker of the least favorable point of distance fire pump station guard plot farthest.
Fire pump station links to each other with the pressure proportional tank bag type fixed froth installation of each subregion respectively, the pressure proportional tank bag type fixed froth installation of each subregion respectively with corresponding subregion in the set high power foam generator in each guard plot link to each other, on the inlet tube of fire pump outlet, pressure proportional tank bag type fixed froth installation water inlet pipe, foam dope and each guard plot foams mix liquid pipeline, motor-operated control valve and pressure switch are set respectively.
The extinguishing method of large-scale high expansion foam fire-extinguishing system of the present utility model, in armed state, the motor-operated control valve on the water inlet pipe of the pressure proportional tank bag type fixed froth installation of each subregion is in pre-action state (namely being full of the press water that satisfies system requirements before the motor-driven valve of the water inlet pipe of pressure proportional tank bag type fixed froth installation at ordinary times); The fire extinguishing state, each motor-operated control valve action step is as follows:
1) after fire protection control center is received fire alarm signal after (need confirm for the second time), water inlet pipe and the foam dope import motor-operated control valve of the motor-operated control valve on the corresponding guard plot foams mix liquid pipeline, the pressure proportional tank bag type fixed froth installation of respective partition are opened immediately, start simultaneously fire pump;
2) press water is through in the pressure proportioning tank and barrier film capsule in the water inlet control valve difference access to plant of pressure proportional tank bag type fixed froth installation, and barrier film is subjected to hydraulic pressure to produce creep, and foam dope is pressed in the pressure proportioning tank;
3) after press water and foam dope (the heatproof fire foam of anti-the cigarette) blend together 3～6% foam mixing liquid through pressure proportioning tank; guided by the motor-operated control valve on the corresponding guard plot foams mix liquid pipeline; foam mixing liquid arrives the protection zone of appointment by the electric butterfly valve of porch, guard plot; enter in the water conservancy drive-type high power foam generator of corresponding guard plot; drive foam maker and spurt foam; within the time of regulation and stipulation, reach the minimum height that floods; after this foam continues to spurt, to the last fire extinguishing.
Claims (1)
1. the arrangement of large-scale high expansion foam fire-extinguishing system is characterized in that, the jurisdiction guard plot is divided into several subregions, and each subregion adopts a central controlled fire pump station and fire protection control center; Establish fire pump in the fire pump station; Each subregion arranges respectively a cover pressure proportional tank bag type fixed froth installation; In each guard plot, establish high power foam generator; The setting position of the pressure proportional tank bag type fixed froth installation of fire pump station and each subregion satisfies the delay time that begins to spray foam from system alarm to corresponding guard plot foam maker and is no more than 30s;
Fire pump station links to each other with the pressure proportional tank bag type fixed froth installation of each subregion respectively, the pressure proportional tank bag type fixed froth installation of each subregion respectively with corresponding subregion in the set high power foam generator in each guard plot link to each other, on the inlet tube of fire pump outlet, pressure proportional tank bag type fixed froth installation water inlet pipe, foam dope and each guard plot foams mix liquid pipeline, motor-operated control valve and pressure switch are set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591521 CN202909351U (en) | 2012-11-12 | 2012-11-12 | Layout structure for large-scale high expansion foam extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220591521 CN202909351U (en) | 2012-11-12 | 2012-11-12 | Layout structure for large-scale high expansion foam extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202909351U true CN202909351U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220591521 Expired - Fee Related CN202909351U (en) | 2012-11-12 | 2012-11-12 | Layout structure for large-scale high expansion foam extinguishing system |
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| CN (1) | CN202909351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949794A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system |
-
2012
- 2012-11-12 CN CN 201220591521 patent/CN202909351U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949794A (en) * | 2012-11-12 | 2013-03-06 | 鞍钢集团工程技术有限公司 | Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system |
| CN102949794B (en) * | 2012-11-12 | 2015-03-11 | 鞍钢集团工程技术有限公司 | Arrangement structure and fire extinguishing method of large-size high-expansion foam fire extinguishing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20151112 |
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| EXPY | Termination of patent right or utility model |