CN101224327B - Current misinformation canceller for fire fighting system wet alarm valves - Google Patents
Current misinformation canceller for fire fighting system wet alarm valves Download PDFInfo
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- CN101224327B CN101224327B CN2007100365320A CN200710036532A CN101224327B CN 101224327 B CN101224327 B CN 101224327B CN 2007100365320 A CN2007100365320 A CN 2007100365320A CN 200710036532 A CN200710036532 A CN 200710036532A CN 101224327 B CN101224327 B CN 101224327B
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Abstract
The invention relates to a flow false alarm canceller used for a wet alarm valve unit of a fire fighting system. The structure of the invention comprises a filtering valve, a hole-regulating valve and a bent galvanized pipe. The filtering valve is used for filtering impurities in fire water. The hole-regulating valve is a valve used for regulating the flow of the fire water so as to control the sensitivity of the flow misinformation canceller by regulating the flow of the fire water. The bent galvanized pipe can baffle the fire water flowing from the wet alarm valve unit so as to reduce pressure. The invention can solve the false alarm of the wet alarm valve unit of the fire fighting system.
Description
Technical field
The present invention relates to the fire-fighting equipment field, particularly relate to a kind of current misinformation canceller for fire fighting system wet alarm valves.
Background technology
For the generation of fire preventing, industry or residential area often are provided with fire-fighting system.A typical fire-fighting system often is formed by connecting by pump house, wet alarm valve group, underground looped network, spray head and pipeline.
Pump house is equipped with fire pump and stabilized pressure pump.Fire pump extracts fire water from cistern when fire takes place, through entering underground looped network again after the fire pump pressurization, fire water enters the wet alarm valve group again after underground looped network comes out, at last by the spray head sprinkling fire.Because underground looped network is bigger, has less fire water seepage under the normal condition, causes system pressure decline slowly.Stabilized pressure pump can replenish fire water to keep system pressure when the loss of system pressure trace.Underground looped network has connected a plurality of wet alarm valve groups around whole fire-fighting district from underground looped network.The wet alarm valve group is the warning that fire water is overflowed when making fire condition, notes to cause the related personnel.
Fig. 1 is the structural representation of existing fire system wet alarm valve group.As shown in Figure 1, existing fire system wet alarm valve group is made of water bell 1, pressure switch 2, Metal Ball 3, extinguishing pipe 4, valve gap 5 and cannelure 6.Described wet alarm valve group has two states, i.e. water-filling state and poised state.The water-filling state promptly is that fire water flows into from water inlet, and valve gap 5 is opened.After treating that valve gap 5 top hydraulic pressure and valve gap 5 below hydraulic pressure pressure equate, the wet alarm valve group promptly can transfer poised state to from the water-filling state.A cannelure 6 is arranged on the valve gap 5, and the valve gap top that has been pressed in cannelure 6 tightly when the wet alarm valve group is in poised state keeps apart the water in cannelure 6 and the valve body.When valve gap 5 top pressure decrease or valve gap below pressure rising certain amplitude, valve gap 5 will disequilibrium and open, and after valve gap was opened, fire water will enter cannelure 6 simultaneously, enter extinguishing pipe 4 by cannelure 6, thereby enter into Metal Ball 3 from extinguishing pipe 4.Described Metal Ball 3 triggers pressure switch 2 after overflowing fire water, and pressure switch 2 control water bells 1 cause the alarm bell warning.Up to valve gap fire fighting hydraulic pressure dynamic balance about in the of 5, system is recovered automatically, and water bell 1 just stops to report to the police.Pressure switch 2 can automatically reset, also can the people for resetting.
The fire water when fire condition of wet alarm valve group is overflowed and is had warning function, but but can cause false alarm because of some known unexpected factors in reality is used.Such as, in starting the underground looped network in back, stabilized pressure pump can form the crest that a pressure rises, when stabilized pressure pump soon starts the trough that can form a pressure decline when also being not activated in the underground looped network.Described pressure variation has just caused fire-fighting current fluctuation in the wet alarm valve.This fire-fighting current fluctuation is easy to allow wet alarm valve take for the fire-fighting current and moves, so send wrong current actuating signal to the fire fighting monitoring center, make the fire fighter carry out unnecessary alarm reaction.From the near more wet alarm valve group of pump house be subjected to this influence big more, from pump house wet alarm valve group far away more be subjected to this influence more little.
Therefore, existing fire system wet alarm valve group has following defective: can cause false alarm because the startup of stabilized pressure pump such as stops at factor, can not carry out sensitivity to different pressure oscillations regulates, cause the wet alarm valve group closer to still have wrong report, and the wet alarm valve group alarm sensitivity distant apart from pump house is too low apart from pump house; The Metal Ball below does not have filter, and the Metal Ball porch is easily stopped up, and in case obstruction will cause system down, so reliability is not too high; The used metal material of Metal Ball is many, and cost is higher.
Summary of the invention
Defective for the above-mentioned poor reliability that solves existing fire system wet alarm valve group is reported by mistake easily provides a kind of current misinformation canceller for fire fighting system wet alarm valves, can solve above defective effectively.
In order to realize the foregoing invention purpose, the invention provides a kind of current misinformation canceller for fire fighting system wet alarm valves, its structure comprises strainer valve, hole control valve and crooked galvanized pipe.Strainer valve is with the contaminant filter in the fire water; The hole control valve is a valve of regulating the fire-fighting water yield, by the adjusting of fire water amount being controlled the sensitivity of current wrong report arrester; Crooked galvanized pipe makes the fire water of flowing out from the wet alarm valve group obtain buffering, and pressure reduces.Described crooked galvanized pipe links to each other with pressure switch with extinguishing pipe respectively, and described strainer valve and hole control valve are installed in respectively on the crooked galvanized pipe, and the hole control valve is at the strainer valve rear.
Described crooked galvanized pipe and extinguishing pipe acutangulate.Described acute angle is 45 degree.
Described crooked galvanized pipe caliber is littler than extinguishing pipe caliber.Galvanized pipe is 1 to 2 with the ratio of extinguishing pipe caliber.
Described hole control valve can open and can cut out, the caliber of complete opening is identical with crooked galvanized pipe caliber, close fully and can avoid any fire water to enter crooked galvanized pipe, can control the sensitivity of current wrong report arrester by the opening degree of adjustment hole mediation valve.
The present invention has solved the false alarm phenomenon effectively, has improved the precision of fire-fighting system wet alarm valve group; The present invention can filter the impurity in the fire water, has avoided existing apparatus because impurity stops up cause malfunctioning; The present invention has replaced the Metal Ball in the existing fire system wet alarm valve group, has reduced cost.
Description of drawings
Fig. 1 is the structural representation of existing fire system wet alarm valve group;
Fig. 2 adopts fire-fighting system wet alarm valve group structural representation of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is elaborated.
Fig. 2 adopts fire-fighting system wet alarm valve group structural representation of the present invention.As shown in Figure 2, be current wrong report arrester in the square frame, described stream wrong report arrester is installed between extinguishing pipe and the pressure switch.Described current wrong report arrester is made up of strainer valve 9, hole control valve 8, crooked galvanized pipe 7 three parts.Described strainer valve 9 filters impurity from the fire water that extinguishing pipe 4 flows out; Described hole control valve 8 can be controlled the sensitivity of current wrong report arrester by opening degree; Described crooked galvanized pipe 7 can cushion fire water pressure, avoids fire water to trigger pressure switch so that cause 1 warning of water bell.
Described crooked galvanized pipe and extinguishing pipe acutangulate, and described crooked galvanized pipe caliber is littler than extinguishing pipe caliber.In this specific embodiment, it is at 45 to adopt crooked galvanized pipe 7 and extinguishing pipe 4 to link, and crooked galvanized pipe 7 is 1:2 with the ratio of extinguishing pipe 4 calibers.Above-mentioned improvement has certain inhibition to fire water stream, and therefore most of extinguishing pipe 4 that can directly pass through flows into drainage when fire water is outwards overflowed, and fraction can flow to strainer valve 9.Described fraction fire water is carried out contaminant filter through strainer valve 9, cushions through crooked galvanized pipe 7 again.The fire water pressure that comes out from crooked galvanized pipe 7 is very little, no longer possesses the pressure that triggers fire water pressure switch 2.Therefore, the present invention can avoid the generation of false alarm effectively.
In actual applications, system material bears pressure and the different of extinguishing pipe 4 calibers all can have a direct impact sensitivity of the present invention.Hole mediation valve 8 can be opened also and can close, and the caliber of complete opening is identical with crooked galvanized pipe 7 calibers, closes fully and can avoid any fire water to enter crooked galvanized pipe 7.Therefore can control sensitivity of the present invention by the opening degree of adjustment hole mediation valve 8.
And when overflowing under the real fire condition of fire water, because a lot of pressure of the water yield are very big, fire water can be reported arrester triggering pressure switch 2 by mistake by current fully and cause 1 warning of water bell.So the intermittent pressure oscillation that the present invention can cause the factors such as open and close of stabilized pressure pump masks, and real fire alarm can not be filtered.
The above is the specific embodiment of the present invention only, and is not used in qualification the present invention.Any replacement, combination, discrete all should being included within protection scope of the present invention of the present invention being made device well know in the art and step.
Claims (6)
1. current misinformation canceller for fire fighting system wet alarm valves is characterized in that its structure comprises:
Strainer valve filters the impurity in the fire water;
Hole control valve, described hole control valve are the valves of regulating the fire-fighting water yield, by the adjusting of fire water amount being controlled the sensitivity of current wrong report arrester;
Crooked galvanized pipe makes the fire water of flowing out from the wet alarm valve group obtain buffering, and pressure reduces;
Described crooked galvanized pipe links to each other with pressure switch with the extinguishing pipe of described wet alarm valve group respectively, and described strainer valve and hole control valve are installed on the crooked galvanized pipe, and the hole control valve is at the strainer valve rear.
2. current misinformation canceller for fire fighting system wet alarm valves as claimed in claim 1 is characterized in that: described hole control valve can open also and can cut out, and can control the sensitivity of current wrong report arrester by the opening degree of adjustment hole mediation valve.
3. current misinformation canceller for fire fighting system wet alarm valves as claimed in claim 1 or 2 is characterized in that: the water inlet direction of described crooked galvanized pipe and extinguishing pipe acutangulates.
4. current misinformation canceller for fire fighting system wet alarm valves as claimed in claim 3 is characterized in that: described crooked galvanized pipe becomes 45 degree with the water inlet direction of extinguishing pipe.
5. current misinformation canceller for fire fighting system wet alarm valves as claimed in claim 1 or 2 is characterized in that: described crooked galvanized pipe caliber is littler than extinguishing pipe caliber.
6. current misinformation canceller for fire fighting system wet alarm valves as claimed in claim 5 is characterized in that: described crooked galvanized pipe is 1 to 2 with the ratio of extinguishing pipe caliber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100365320A CN101224327B (en) | 2007-01-17 | 2007-01-17 | Current misinformation canceller for fire fighting system wet alarm valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100365320A CN101224327B (en) | 2007-01-17 | 2007-01-17 | Current misinformation canceller for fire fighting system wet alarm valves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224327A CN101224327A (en) | 2008-07-23 |
| CN101224327B true CN101224327B (en) | 2011-06-29 |
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ID=39856667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100365320A Expired - Fee Related CN101224327B (en) | 2007-01-17 | 2007-01-17 | Current misinformation canceller for fire fighting system wet alarm valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101224327B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003201A1 (en) * | 1988-09-21 | 1990-04-05 | Back-Flo Alarm Valve Co., Inc. | Combined alarm and back-flow prevention arrangement for fire suppression sprinkler system |
| CN2073760U (en) * | 1990-08-09 | 1991-03-27 | 李永平 | Automatic fire-extinguishing alarm |
| CN2260631Y (en) * | 1995-08-22 | 1997-08-27 | 齐东升 | Wet alarm valve |
| CN2331381Y (en) * | 1998-05-27 | 1999-08-04 | 王虎儒 | Wet-type alarm valve for fire fighting |
-
2007
- 2007-01-17 CN CN2007100365320A patent/CN101224327B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990003201A1 (en) * | 1988-09-21 | 1990-04-05 | Back-Flo Alarm Valve Co., Inc. | Combined alarm and back-flow prevention arrangement for fire suppression sprinkler system |
| CN2073760U (en) * | 1990-08-09 | 1991-03-27 | 李永平 | Automatic fire-extinguishing alarm |
| CN2260631Y (en) * | 1995-08-22 | 1997-08-27 | 齐东升 | Wet alarm valve |
| CN2331381Y (en) * | 1998-05-27 | 1999-08-04 | 王虎儒 | Wet-type alarm valve for fire fighting |
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| Publication number | Publication date |
|---|---|
| CN101224327A (en) | 2008-07-23 |
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Granted publication date: 20110629 Termination date: 20190117 |