CN100446045C - Irrecoverable linear temperature sensitive detector and opening alarm method thereof - Google Patents
Irrecoverable linear temperature sensitive detector and opening alarm method thereof Download PDFInfo
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- CN100446045C CN100446045C CNB2007100566599A CN200710056659A CN100446045C CN 100446045 C CN100446045 C CN 100446045C CN B2007100566599 A CNB2007100566599 A CN B2007100566599A CN 200710056659 A CN200710056659 A CN 200710056659A CN 100446045 C CN100446045 C CN 100446045C
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Abstract
This is a non-recoverable linear thermal detector and alarm circuit method. The detector consists of two parallel linear temperature perceptual elements A, B, the resistor connected at one end of the linear temperature perception components A, B and the converter boxes connected at the other end of the linear temperature perception components A, B. The linear temperature perception component A consists of two parallel detection conductors and the insulation layer between the parallel detection conductors, and at least one detection conductor is easy fuse wire. The linear temperature perception component B consists of two parallel detection conductors and the NTC barrier layer between the parallel detection conductors. The non-recoverable linear thermal detector and alarm circuit method in the invention can issue different alarm signals according to the open-circuit failure or open-circuit fire. So it can prevent fault alarm caused by failure of linear temperature-aware components circuit in the normal temperature, thus improving the reliability of alarm detector.
Description
Technical field
The present invention relates to a kind of irrecoverable linear temperature-sensitive detector and breaking alarming method thereof, particularly relate to and a kind ofly can prevent false alarm, so higher irrecoverable linear temperature-sensitive detector and the breaking alarming method thereof of reliability.
Background technology
Line-type heat detector is a kind of present widely used fire detector, mainly be divided into two kinds of recovery formula and beyond retrievables, usually by linear temperature sensor, be connected the terminal resistance of linear temperature sensor one end and be connected the other end of linear temperature sensor, can detect the warning electrical quantity (or sampled value) on the linear temperature sensor in real time, and form according to the size of warning electrical quantity (or sampled value) or the boxcar of changing value output fire alarm signal.Disclose a kind of irrecoverable linear temperature-sensitive detector that proposes by the present patent application people in No. the 200610126890.6th, the Chinese invention patent application.Fig. 1 is the irrecoverable linear temperature-sensitive detector structural representation of this prior art.As shown in Figure 1, the irrecoverable linear temperature-sensitive detector of this prior art comprises linear temperature sensor, terminal resistance 5 and boxcar 4.Wherein linear temperature sensor is made up of the detecting conductors 1,2 and the parallel insulation course 3 that is arranged between the detecting conductor 1,2 of two parallel settings, and detecting conductor 1 is the conductor silk that easily fuses; One end of two detecting conductors 1,2 is electrically connected with the input end of boxcar 4 respectively, then is in series with terminal resistance 5 between the other end.In-20 ℃～45 ℃ conventional temperature range, the detecting conductor of being made by easy fusing conductor silk 1 is a continuous conductor, forms turning circuit between itself and detecting conductor 2 and the terminal resistance 5.When this linear temperature sensor local heating and when reaching the fusing-off temperature of easy fusing conductor silk, the easy fusing conductor silk of inside, heated part will begin to melt, under its surface tension effects, detecting conductor 1,2 and terminal resistance 5 between the circuit that forms forever cut off, boxcar 4 will send fire alarm signal immediately according to the electrical quantity size or the changing value of linear temperature sensor this moment, thereby reach the purpose of fire alarm.The breaking alarming method of this line-type heat detector is that boxcar 4 detects the warning electrical quantity (or sampled value) on the linear temperature sensor in real time, occur " opening circuit " state on the linear temperature sensor in case detect, boxcar 4 sends the fire alarm signal that opens circuit immediately.But, there are following point in this irrecoverable linear temperature-sensitive detector and breaking alarming method thereof: in the installation and use of linear temperature sensor, in case it is subjected to excessive mechanical external force effect, detecting conductor 1 just is easy to occur open circuit fault, but this moment, boxcar 4 can not send the open circuit fault alerting signal, and can only send the fire alarm signal that opens circuit, will cause false alarm like this, so reliability is relatively poor.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide and a kind ofly can send different alarm respectively according to the open circuit fault or the fire condition that opens circuit, thereby can prevent false alarm, so higher irrecoverable linear temperature-sensitive detector and the breaking alarming method thereof of reliability.
In order to achieve the above object, irrecoverable linear temperature-sensitive detector provided by the invention comprises two parallel linear temperature sensor A that are provided with, B, be connected to linear temperature sensor A, the terminal resistance of B one end and be connected linear temperature sensor A simultaneously, the boxcar of the B other end; Wherein linear temperature sensor A is made up of two parallel detecting conductors that are provided with and the parallel insulation courses that are arranged between the detecting conductor, and in the detecting conductor at least one be the easy conductor silk that fuses; Linear temperature sensor B is made up of two parallel detecting conductors that are provided with and the parallel NTC characteristic barrier layer that is arranged between the detecting conductor.
Described linear temperature sensor A, B can a shared detecting conductor.
A detecting conductor among the described linear temperature sensor B is a thermocouple wire.
The breaking alarming method of irrecoverable linear temperature-sensitive detector provided by the invention comprises the following step that carries out in order:
(1) stage of in real time resistance value, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change of the state of linear temperature sensor A and linear temperature sensor B being detected of boxcar;
(2) when detecting linear temperature sensor A, boxcar is in " opening circuit " state, but some or when not exceeding simultaneously corresponding setting threshold in the resistance value of linear temperature sensor B, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change, the stage of sending " opening circuit " failure alarm signal;
(3) when detecting linear temperature sensor A, boxcar is in " opening circuit " state, and some or when exceeding corresponding setting threshold simultaneously in the resistance value of linear temperature sensor B, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change, the stage of sending " opening circuit " fire alarm signal.
Described threshold value is empirical value or obtains by experiment.
Irrecoverable linear temperature-sensitive detector provided by the invention and breaking alarming method thereof can send different alerting signals respectively according to the open circuit fault or the fire condition that opens circuit, therefore the false alarm problem that the open circuit fault because of linear temperature sensor causes can be prevented under the normal temperature, thereby the fire alarm reliability of this detector can be improved.
Description of drawings
Fig. 1 is the vertical partial structurtes cut-open view of linear temperature sensor in the irrecoverable linear temperature-sensitive detector of prior art.
Fig. 2 is irrecoverable linear temperature-sensitive detector one an example structure synoptic diagram provided by the invention.
Fig. 3 is another example structure synoptic diagram of irrecoverable linear temperature-sensitive detector provided by the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments irrecoverable linear temperature-sensitive detector provided by the invention and breaking alarming method thereof are elaborated.
Embodiment 1:
As shown in Figure 2, irrecoverable linear temperature-sensitive detector provided by the invention comprises two parallel linear temperature sensor A that are provided with, B, be connected to linear temperature sensor A, the terminal resistance 16 of B one end, 17 and be connected linear temperature sensor A, the boxcar 18 of the B other end simultaneously; Wherein linear temperature sensor A is made up of two parallel detecting conductors that are provided with 10,11 and the parallel insulation courses 15 that are arranged between the detecting conductor 10,11, and in the detecting conductor 10,11 at least one be the conductor silk that easily fuses; Linear temperature sensor B is made up of two parallel detecting conductors that are provided with 12,13 and the parallel NTC characteristic barrier layer 14 that is arranged between the detecting conductor 12,13.Can adopt parallel, winding or coaxial manner setting between the detecting conductor 10 and 11,12 and 13, and linear temperature sensor A then can adopt parallel or canoe setting between the B.The resistance value scope of terminal resistance 16,17 is 1K Ω～20M Ω.Boxcar 18 is used for detecting in real time state between the detecting conductor 10,11 and the resistance value (sampled value) between the detecting conductor 12,13, resistance change rate size.In addition, linear temperature sensor A, the outside of B can also be provided with an oversheath.
Embodiment 2:
As shown in Figure 3, present embodiment is the improvement on embodiment 1 basis: two detecting conductors 10 and detecting conductor 19 of 12 usefulness of being about among the embodiment 1 replace, at this moment, detecting conductor 11,19 and insulation course 15 are formed linear temperature sensor A, and detecting conductor 13,19 and NTC characteristic barrier layer 14 form linear temperature sensor B, other structure is constant.
Embodiment 3:
Present embodiment is the improvement on embodiment 1,2 bases: be about to detecting conductor 12, arbitrary conductor in 13 or 19 replaces with thermocouple wire, thereby constitute linear temperature sensor B with thermocouple characteristic with another root detecting conductor, boxcar 18 is used for detecting in real time the state of linear temperature sensor A and voltage (electromotive force) value, the magnitude of voltage rate of change of linear temperature sensor B, and other structure is constant.
Linear temperature sensor A in irrecoverable linear temperature-sensitive detector provided by the invention, B is heated and when reaching uniform temperature, because two detecting conductors 10 of linear temperature sensor A, one is the conductor silk that easily fuses in 11, therefore the temperature of the easy fusing conductor silk of inside, heated part will rise thereupon, it will produce thawing when temperature reaches the fusing-off temperature of easy fusing conductor silk, under surface tension effects, by detecting conductor 10,11 and the circuit that constitutes of terminal resistance 16 forever cut off, promptly occur opening circuit, meanwhile, the resistance value of the NTC characteristic barrier layer 14 among the linear temperature sensor B, the resistance change rate, magnitude of voltage or magnitude of voltage rate of change also will change, if be connected linear temperature sensor A this moment, the boxcar 18 of B one end detects linear temperature sensor A and is in " opening circuit " state, but the resistance value of linear temperature sensor B, the resistance change rate, some or do not exceed simultaneously corresponding setting threshold (these threshold values are empirical value or obtain by experiment in magnitude of voltage or the magnitude of voltage rate of change, linear temperature sensor B is under residing Normal Environmental Temperature, its electrical quantity does not exceed threshold value all the time, and carrying out one meter when being subjected to heat test, when temperature reaches the fire alarm temperature, its resistance value, the resistance change rate, magnitude of voltage or magnitude of voltage rate of change will exceed corresponding threshold value), it will send " opening circuit " failure alarm signal; And if boxcar 18 detected linear temperature sensor A and was in " opening circuit " state this moment, and it is some or exceed above-mentioned setting threshold simultaneously in the resistance value of linear temperature sensor B, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change, show that fire really takes place, it will send " opening circuit " fire alarm signal, thereby reach the purpose of fire alarm.
And the linear temperature sensor A in irrecoverable linear temperature-sensitive detector provided by the invention, B makes detecting conductor 10 because of the effect that is subjected to mechanical external force, 11 or 10, when opening circuit appears in the easy fusing conductor silk in 19, because the resistance value of the NTC characteristic barrier layer 14 among the linear temperature sensor B, the resistance change rate, magnitude of voltage or magnitude of voltage rate of change change less, so this moment, the testing result of boxcar 18 was that linear temperature sensor A is in " opening circuit " state, but the resistance value of linear temperature sensor B, the resistance change rate, magnitude of voltage or magnitude of voltage rate of change do not exceed corresponding setting threshold yet, so it will send " opening circuit " failure alarm signal.
Claims (5)
1, a kind of irrecoverable linear temperature-sensitive detector, it is characterized in that: described irrecoverable linear temperature-sensitive detector comprises two parallel linear temperature sensor A that are provided with, B, be connected to linear temperature sensor A, the terminal resistance (16 of B one end, 17) and simultaneously be connected linear temperature sensor A, the boxcar of the B other end (18); Wherein linear temperature sensor A is made up of two parallel detecting conductors (10,11) that are provided with and the parallel insulation courses (15) that are arranged between the detecting conductor (10,11), and in the detecting conductor (10,11) at least one be the conductor silk that easily fuses; Linear temperature sensor B is made up of two parallel detecting conductors (12,13) that are provided with and the parallel NTC characteristic barrier layer (14) that is arranged between the detecting conductor (12,13).
2, irrecoverable linear temperature-sensitive detector according to claim 1 is characterized in that: described linear temperature sensor A, B can a shared detecting conductor.
3, according to claim 1,2 described irrecoverable linear temperature-sensitive detectors, it is characterized in that: a detecting conductor among the described linear temperature sensor B is a thermocouple wire.
4, a kind of breaking alarming method of irrecoverable linear temperature-sensitive detector as claimed in claim 1 is characterized in that: the breaking alarming method of described irrecoverable linear temperature-sensitive detector comprises the following step that carries out in order:
(1) stage of in real time resistance value, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change of the state of linear temperature sensor A and linear temperature sensor B being detected of boxcar;
(2) when detecting linear temperature sensor A, boxcar is in " opening circuit " state, but some or when not exceeding simultaneously corresponding setting threshold in the resistance value of linear temperature sensor B, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change, the stage of sending " opening circuit " failure alarm signal;
(3) when detecting linear temperature sensor A, boxcar is in " opening circuit " state, and some or when exceeding corresponding setting threshold simultaneously in the resistance value of linear temperature sensor B, resistance change rate, magnitude of voltage or the magnitude of voltage rate of change, the stage of sending " opening circuit " fire alarm signal.
5, the breaking alarming method of irrecoverable linear temperature-sensitive detector according to claim 4 is characterized in that: described threshold value is empirical value or obtains by experiment.
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| CNB2007100566599A CN100446045C (en) | 2007-01-30 | 2007-01-30 | Irrecoverable linear temperature sensitive detector and opening alarm method thereof |
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| CN100446045C true CN100446045C (en) | 2008-12-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102163359A (en) * | 2011-04-12 | 2011-08-24 | 李萍 | Linear temperature sensor with spare loop |
| CN104574771B (en) * | 2015-01-20 | 2017-11-14 | 江苏中实电子有限公司 | A kind of composite linear temperature-sensing fire disaster detector and its alarm method |
| CN107588867A (en) * | 2017-09-25 | 2018-01-16 | 南京航伽电子科技有限公司 | A kind of automatic calibrating method of temperature transmitter |
Citations (6)
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| PL158337B3 (en) * | 1987-10-27 | 1992-08-31 | Linear detector of fire of waring fire protection installation | |
| CN2549448Y (en) * | 2002-05-28 | 2003-05-07 | 张陈 | Multi-stage resettable linear temperature sensor against fire disaster |
| KR20040027534A (en) * | 2004-02-10 | 2004-04-01 | 정재묵 | Linear Fire Tube and Non-Power Automatic Fire System |
| CN2773650Y (en) * | 2004-12-27 | 2006-04-19 | 首安工业消防股份有限公司 | Double-alarm linear temperature-sensing fire detector |
| CN1773232A (en) * | 2004-11-12 | 2006-05-17 | 首安工业消防股份有限公司 | Recombination line type temperature-sensing fire detector |
| RU2004137048A (en) * | 2004-03-12 | 2006-05-27 | Частное предпри тие "Артон" (UA) | LINEAR SMOKE FIRE DETECTOR |
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2007
- 2007-01-30 CN CNB2007100566599A patent/CN100446045C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL158337B3 (en) * | 1987-10-27 | 1992-08-31 | Linear detector of fire of waring fire protection installation | |
| CN2549448Y (en) * | 2002-05-28 | 2003-05-07 | 张陈 | Multi-stage resettable linear temperature sensor against fire disaster |
| KR20040027534A (en) * | 2004-02-10 | 2004-04-01 | 정재묵 | Linear Fire Tube and Non-Power Automatic Fire System |
| RU2004137048A (en) * | 2004-03-12 | 2006-05-27 | Частное предпри тие "Артон" (UA) | LINEAR SMOKE FIRE DETECTOR |
| CN1773232A (en) * | 2004-11-12 | 2006-05-17 | 首安工业消防股份有限公司 | Recombination line type temperature-sensing fire detector |
| CN2773650Y (en) * | 2004-12-27 | 2006-04-19 | 首安工业消防股份有限公司 | Double-alarm linear temperature-sensing fire detector |
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Owner name: SHOU AN INDUSTRY FIRE LTD. Free format text: FORMER OWNER: ZHANG WEISHE; APPLICANT Effective date: 20080704 |
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Effective date of registration: 20080704 Address after: Beijing City, the Capital Airport South Industrial Zone Banbidian Road No. 22 Lee post encoding: 101304 Applicant after: Sureland Industry Fire-Fighting Co., Ltd. Address before: The construction of the road in the middle of Xiqing Yangliuqing town, Tianjin District 55 post encoding: 300380 Applicant before: Zhang Wei Co-applicant before: Li Gangjin |
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Denomination of invention: Non-recoverable linear temperature sensing detector and its breaking alarming method Effective date of registration: 20121010 Granted publication date: 20081224 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industry Fire-Fighting Co., Ltd. Registration number: 2012990000591 |
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Date of cancellation: 20171114 Granted publication date: 20081224 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industry Fire-Fighting Co., Ltd. Registration number: 2012990000591 |