CN101493982A - System and method for monitoring tubular temperature-sensing fire - Google Patents
System and method for monitoring tubular temperature-sensing fire Download PDFInfo
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- CN101493982A CN101493982A CNA2009100471155A CN200910047115A CN101493982A CN 101493982 A CN101493982 A CN 101493982A CN A2009100471155 A CNA2009100471155 A CN A2009100471155A CN 200910047115 A CN200910047115 A CN 200910047115A CN 101493982 A CN101493982 A CN 101493982A
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Abstract
The invention relates to a tubular temperature-sensitive fire monitoring system and a monitoring method thereof. In the method, a system failure detecting program and a fire monitoring program are conducted interchangeably. When the programs start, the system failure detecting program is firstly operated, wherein, an air boosting pump stops after boosting pressure to a tubular detecting tube for a certain period; a first pressure sensor works and judges whether a pressure drop occurs in the detecting tube or not; if so, a system failure alarm is started; otherwise, the pressure relief is conducted and the system is switched to the fire monitoring program. Under fire monitoring, a second pressure sensor starts to detect whether a pressure boost occurs in the detecting tube or not; if so, the fire alarm is started; otherwise, the monitoring is continued. The system failure detecting time and the fire monitoring time are set and the two programs are interchanged with each other in a fixed time interval. The method completely separates the failure detecting and the fire monitoring and avoids the mutual interference, thus not only increasing the accuracy of failure detecting but also enhancing the sensitivity of fire monitoring.
Description
Technical field
The present invention relates to a kind of fire-fighting automatic fire alarm system, relate to a kind of tubular temperature-sensing fire system and monitoring method thereof particularly.
Background technology
The principle of work of tubular temperature-sensing fire system is that gas expands in the sound-pipe when temperature occurring and raise, and pressure increases to be monitored.The tubular temperature-sensing fire system was divided into for two generations: bellows-type tubular temperature-sensing fire system and gasbag-type tubular temperature-sensing fire system.100 meters sound-pipes extend by a metal bellows in the bellows-type tubular temperature-sensing fire system of the first generation, gas expands in the airtight sound-pipe because the rising of environment temperature makes, the expansion of gas causes bellows one end surfaces to heave, collide with the sheet metal of top after heaving to a certain degree, send a contact signal, representation temperature changes, and fire may take place.This kind bellows-type tubular temperature-sensing fire system non-fault measuring ability, whether for sound-pipe is that air-tight state can't be judged, leak source appears when sound-pipe damages, can cause the sound-pipe internal pressure to raise does not slowly even raise, this moment, this system then can't detect the generation of fire, and very big potential safety hazard is arranged; And the gasbag-type tubular temperature-sensing fire system of the second generation, whether its inside has increased a metal bellows, by the extruding injecting gas in sound-pipe to metal bellows, detects its pressure with tensimeter again to change, intact to judge sound-pipe.But because the volume of air bag is less, the pressure that injects in the sound-pipe is low, can only detect open leakage, when sound-pipe just slightly leaked, this system almost can't detect, simultaneously, what this system failure detection and fire monitoring were used is same tensimeter, so sound-pipe length is restricted, the longlyest only be 200 meters, be unfavorable for being extensive use of of this system.Also reach more than 10 minutes detection time simultaneously, seriously disturbed the continuation of fire monitoring, still have very big potential safety hazard.
Summary of the invention
The purpose of this invention is to provide a kind of accurate, sensitive tubular temperature-sensing fire method, this method makes the detection of fault and the monitoring of fire separate fully, not disturb mutually, has both increased the accuracy of fault detect, has increased the sensitivity of fire monitoring again.
Another object of the present invention has provided a kind of tubular temperature-sensing fire system that uses above-mentioned monitoring method.
The object of the present invention is achieved like this:
A kind of tubular temperature-sensing fire method, this method is hocketed by system failure detection program and fire monitoring program;
(1) system failure detection program:
During program start, at first enter the system failure detection program, air boost pump carries out to the tubulose sound-pipe stopping after the supercharging of certain hour; The first pressure transducer work judges whether occur pressure drop in the sound-pipe, if pressure drop is arranged, and start-up system fault alarm then; If there is not pressure drop, release, system switches to the fire monitoring program;
(2) fire monitoring program:
Second pressure transducer work during fire monitoring judges that whether occurring pressure in the tubulose sound-pipe increases, if increase is arranged, then second pressure transducer starts fire alarm; If no change continues to monitor; Initialization system fault detect and fire monitoring interval time, both regularly switch;
Step (1) and step (2) hocket.
A kind of tubular temperature-sensing fire system that has used above-mentioned monitoring method, this system is made up of sound-pipe, electronic circuit processor, fault detection unit and fire monitoring unit, a terminal envelope is established in described sound-pipe outer end, and described fault detection unit and described fire monitoring unit are communicated with sound-pipe by one or two three-way switch valve;
Described fault detection unit has air boost pump, first pressure transducer and a normally close valve, and described normally close valve is connected with tubulose sound-pipe, air boost pump, first pressure transducer simultaneously, and described first pressure transducer is connected with the electronic circuit processor;
There are second pressure transducer and a normally open valve in described fire monitoring unit, and described normally open valve is connected with tubulose sound-pipe, second pressure transducer simultaneously, and described second pressure transducer is connected with the electronic circuit processor.
Wherein, each parts is connected to each other by three-way connection and connecting pipe in the described fault detection unit; Each parts is connected to each other by three-way connection and connecting pipe in the described fire monitoring unit; Described air boost pump is a driven by motor formula air boost pump; Described pressure transducer is a minute-pressure formula pressure transducer.
The present invention is owing to adopted technique scheme, make it compared with prior art, has beneficial effect: monitoring method provided by the present invention, make the detection of fault and the monitoring of fire separate fully, do not disturb mutually, both increased the accuracy of fault detect, its minimum detectable range measures the leak source of 0.1mm diameter, increased the sensitivity of fire monitoring again, simultaneously, air boost pump makes the use length of sound-pipe increase by 10 times among the present invention, the highlyest can be 2000 meters, failure detection time makes that no longer than 40 seconds the usable range of tubular temperature-sensing fire system is more extensive; In addition, the setting of normally open valve among the present invention when system is in fault detection program, if outage suddenly can shed the air pressure in the detector tube by normally open valve, avoids damaging second pressure transducer.
Description of drawings
Fig. 1 is the structural representation of tubular temperature-sensing fire of the present invention system.
Fig. 2 is the process flow diagram of tubular temperature-sensing fire method of the present invention.
Wherein: 1. tubulose sound-pipe; 11. terminal envelope; 2. fault detection unit; 21. air boost pump; 22. normally close valve; 23. first pressure transducer; 3. fire monitoring unit; 31. second pressure transducer; 32. normally open valve; 4. electronic circuit processor; 5. three-way connection; 6. connecting pipe; 7. two-bit triplet transfer valve.
Embodiment
During manufacturing, as shown in Figure 1, this system comprises: tubulose sound-pipe 1, electronic circuit processor 4, fault detection unit 2 and fire monitoring unit 3, during manufacturing, establish a terminal envelope 11 in the outer end of tubulose sound-pipe 1, make tubulose sound-pipe 1 form an airtight relatively space, fault detection unit 2 comprises air boost pump 21, first pressure transducer 23 and normally close valve 22, during manufacturing, normally close valve 22 is by three-way connection 5 and 6 whiles and tubulose sound-pipe 1 of connecting pipe, air boost pump 21, first pressure transducer 23 connects, first pressure transducer 23 is connected with electronic circuit processor 4, fire monitoring unit 3 comprises second pressure transducer 31 and normally open valve 32, during manufacturing, normally open valve 32 is by three-way connection 5 and 6 whiles and tubulose sound-pipe 1 of connecting pipe, second pressure transducer 31 connects, second pressure transducer 31 is connected with electronic circuit processor 4, and fault detection unit 2 and fire monitoring unit 3 are communicated with tubulose sound-pipe 1 by two-bit triplet transfer valve 7.
In conjunction with process flow diagram narration working routine shown in Figure 2, during program start, two-bit triplet transfer valve 7 switches to fault detection program with system, fault detection unit 2 work this moment, at first, air boost pump 21 carries out to tubulose sound-pipe 1 stopping after the supercharging of certain hour, then first pressure transducer, 23 work, judge whether occur pressure drop in the tubulose sound-pipe 1,, then start fault alarm if pressure drop is arranged; If there is not pressure drop; normally close valve 22 starts to opening the valve state, and tubulose sound-pipe 1 is carried out release, when reducing to extraneous home pressure in the tubulose sound-pipe 1 with pressure; normally close valve 22 is replied close valve state, and two-bit triplet transfer valve 7 switches to the fire monitoring program with system.31 work of second pressure transducer judge that whether occurring pressure in the tubulose sound-pipe 1 increases, if increase is arranged, then starts fire alarm; If no change continues to monitor, when reaching predefined monitoring time, two-bit triplet transfer valve 7 switches to system the malfunction monitoring program once more.Under the program start state, fault detection program and fire monitoring program hocket.If when system proceeds to fault detection program, sudden power, normally open valve 32 can shed the high pressure in the tubulose detector tube 1, damages second pressure transducer 31 in case hinder the gases at high pressure that detect and inject for some reason.
Each parts of above-mentioned each unit are existing commercially available prod, no specific (special) requirements.
Claims (6)
1, a kind of tubular temperature-sensing fire method is characterized in that this method is hocketed by system failure detection program and fire monitoring program;
(1) system failure detection program:
During program start, at first enter the system failure detection program, air boost pump carries out to the tubulose sound-pipe stopping after the supercharging of certain hour; The first pressure transducer work judges whether occur pressure drop in the tubulose sound-pipe, if pressure drop is arranged, and start-up system fault alarm then; If there is not pressure drop, release, system switches to the fire monitoring program;
(2) fire monitoring program:
During fire monitoring, the second pressure transducer work judges that whether occurring pressure in the tubulose sound-pipe increases, if increase is arranged, then second pressure transducer starts fire alarm; If no change continues to monitor; Initialization system fault detect and fire monitoring interval time, both regularly switch;
Step (1) and step (2) hocket.
2, a kind of tubular temperature-sensing fire system of method according to claim 1, it is characterized in that this system is made up of sound-pipe, electronic circuit processor, fault detection unit and fire monitoring unit, a terminal envelope is established in described sound-pipe outer end, and described fault detection unit and described fire monitoring unit are communicated with sound-pipe by one or two three-way switch valve;
Described fault detection unit has air boost pump, first pressure transducer and a normally close valve, and described normally close valve is connected with tubulose sound-pipe, air boost pump, first pressure transducer simultaneously, and described first pressure transducer is connected with the electronic circuit processor;
There are second pressure transducer and a normally open valve in described fire monitoring unit, and described normally open valve is connected with sound-pipe, second pressure transducer simultaneously, and described second pressure transducer is connected with the electronic circuit processor.
3, tubular temperature-sensing fire as claimed in claim 2 system, it is characterized in that: each parts is connected to each other by three-way connection and connecting pipe in the described fault detection unit.
4, tubular temperature-sensing fire as claimed in claim 2 system, it is characterized in that: each parts is connected to each other by three-way connection and connecting pipe in the described fire monitoring unit.
5, tubular temperature-sensing fire as claimed in claim 2 system, it is characterized in that: described air boost pump is a driven by motor formula air boost pump.
6, tubular temperature-sensing fire as claimed in claim 2 system, it is characterized in that: described pressure transducer is a minute-pressure formula pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100471155A CN101493982B (en) | 2009-03-06 | 2009-03-06 | System and method for monitoring tubular temperature-sensing fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100471155A CN101493982B (en) | 2009-03-06 | 2009-03-06 | System and method for monitoring tubular temperature-sensing fire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101493982A true CN101493982A (en) | 2009-07-29 |
| CN101493982B CN101493982B (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100471155A Expired - Fee Related CN101493982B (en) | 2009-03-06 | 2009-03-06 | System and method for monitoring tubular temperature-sensing fire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456120A (en) * | 2013-06-25 | 2013-12-18 | 刘星 | Double-gas-line type temperature sensing fire detector and detection method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392570Y (en) * | 2009-03-06 | 2010-01-27 | 李舒 | Tubular temperature-sensitive fire detector |
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2009
- 2009-03-06 CN CN2009100471155A patent/CN101493982B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456120A (en) * | 2013-06-25 | 2013-12-18 | 刘星 | Double-gas-line type temperature sensing fire detector and detection method thereof |
| CN103456120B (en) * | 2013-06-25 | 2015-12-23 | 刘星 | Two gas circuit line-type heat detector and detection method thereof |
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| Publication number | Publication date |
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| CN101493982B (en) | 2010-08-25 |
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Granted publication date: 20100825 Termination date: 20120306 |