CN100454348C - Linear temperature-sensing fire detector capable of raising response speed and alarming method thereof - Google Patents
Linear temperature-sensing fire detector capable of raising response speed and alarming method thereof Download PDFInfo
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- CN100454348C CN100454348C CNB2007100569296A CN200710056929A CN100454348C CN 100454348 C CN100454348 C CN 100454348C CN B2007100569296 A CNB2007100569296 A CN B2007100569296A CN 200710056929 A CN200710056929 A CN 200710056929A CN 100454348 C CN100454348 C CN 100454348C
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 33
- 150000003839 salts Chemical class 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000013308 plastic optical fiber Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
This invention relates to a linetype temperature-sensing fire detector capable of increasing response speed and its warning method, in which, the detector includes linetype temperature-sensing elements A and B and a converting box connected at one end of A and B, and A is composed of two detecting conductors and NTC property blocking layers parallel set between the ditection conductors, B is composed of two detecting conductors metable salt material layer parallel set between the two conductors and an outer jacket wrapping the conductors and the salt material layers, which can send out fire warning signals when the electric parameter variable of A goes beyond the set temperature-difference alarming threshold value in definite time, since the time of arriving at the alarming threshold value of the parameter variable of A is earlier than that of the parameter of B, the response speed can be increased.
Description
Technical field
The present invention relates to a kind of line-type heat detector and alarm method thereof, particularly relate to a kind of line-type heat detector and alarm method thereof that can improve response speed.
Background technology
Line-type heat detector commonly used at present is a kind of broad-spectrum fire detector, mainly by linear temperature sensor and be connected an end of linear temperature sensor, can be in real time the temperature or the warning electrical quantity (or sampled value) of linear temperature sensor be detected, and form according to the boxcar that the size of temperature or warning electrical quantity (or sampled value) is sent fire alarm signal.United States Patent (USP) the 5th, 793 discloses a kind of line-type heat detector in No. 293.But the linear temperature sensor in this detector is by two parallel detecting conductors that are provided with and parallelly be arranged on two fused salt (eutectic salts) material layers between the detecting conductor and form; Wherein fusible salt material layer is but that glass fibre or plastic optical fibre are immersed in the fused salt of fusing, but the fiber that will soak fused salt then twines or is wrapped in the outside of detecting conductor and makes.But the fusing point of fused salt is 60～300 ℃, and after the fusing, its electric conductivity strengthens, and promptly resistance reduces, and after solidifying, its electric conductivity reduces, and promptly resistance increases.Response time requirement to fire is an important indicator weighing line-type heat detector, just this response time requirement is stipulated among the GB16280-2005 " line-type heat detector ", this index adopts alarm time to test usually and measures, method is 1 meter long linear temperature sensor to be put into the oil groove of 1.4 times of rated function temperatures, and boxcar should (5～60s) send fire alarm signal in the regular hour.When breaking out of fire, the linear temperature sensor that is positioned at the scene of fire in the above-mentioned detector will raise because of the temperature of being heated, but fused salt states of matter in the fusible salt material layer of inside, heated part or electric conductivity will be subjected to the influence of temperature rising and change at this moment, thereby the electrical quantity of linear temperature sensor is also changed thereupon, at this moment, the boxcar that is connected linear temperature sensor one end will detect this variation immediately, in case the temperature of this heated part reaches rated function temperature (but the above temperature of the fusing point that promptly reaches fused salt) or electrical quantity reaches the constant temperature alarming threshold value, boxcar sends fire alarm signal immediately, thereby reaches the purpose of fire alarm.Its alarm method is that boxcar detects the temperature or the electrical quantity of linear temperature sensor in real time, in case when the temperature at a certain position reached rated function temperature or its electrical quantity and reaches the constant temperature alarming threshold value on the linear temperature sensor, boxcar sent fire alarm signal immediately.But, there are following point in the line-type heat detector and the alarm method thereof of this prior art: but owing to the fused salt chance water of linear temperature sensor inside in this detector can produce dissolving, thereby it is very responsive to wet environment, so the water barrier or the oversheath that need have waterproof and dampproof function in the outer setting of linear temperature sensor, at this moment will make the temperature of heated part on the linear temperature sensor reach the time that rated function temperature or its electrical quantity reach the constant temperature alarming threshold value prolongs greatly, be that response speed is slow, and described alarm method also require must be on linear temperature sensor the temperature of heated part reach when rated function temperature or its electrical quantity reach the constant temperature alarming threshold value and just can report to the police, but can not satisfy among the GB16280-2005 " line-type heat detector " requirement so again to the fire response time.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of line-type heat detector and alarm method thereof that can improve response speed.
In order to achieve the above object, the line-type heat detector that can improve response speed provided by the invention comprises two parallel linear temperature sensor A that are provided with, B and be connected linear temperature sensor A simultaneously, the boxcar of B one end; Wherein linear temperature sensor A 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; Linear temperature sensor B by two parallel detecting conductors that are provided with, parallelly be arranged on the fusible salt material layer between the detecting conductor and be coated on detecting conductor and the oversheath of fusible salt material layer outside is formed.
Can a shared detecting conductor between described linear temperature sensor A, the B.
A detecting conductor among the described linear temperature sensor A can be thermocouple wire.
The alarm method that can improve the line-type heat detector of response speed provided by the invention comprises the following step that carries out in order:
(1) boxcar is in real time to the temperature of above-mentioned linear temperature sensor A and linear temperature sensor B or the stage that electrical quantity detects;
When (2) in boxcar detects the time period that the resistance change rate of linear temperature sensor A or magnitude of voltage variable quantity setting, exceeding corresponding setting differential temperature alarming threshold value, no matter whether the electrical quantity of linear temperature sensor B surpasses constant temperature alarming threshold value, the stage of sending fire alarm signal immediately.
Setting-up time section in the described step 2 is 5～60s.
Line-type heat detector that can response speed provided by the invention is parallel on the linear temperature sensor basis of the fusible salt material layer of having of prior art a linear temperature sensor with NTC characteristic barrier layer to be set.Alarm method is to utilize boxcar that the electrical quantity of above-mentioned two linear temperature sensors is detected in real time, in the time period of setting, exceed setting differential temperature alarming threshold value in case have the electrical quantity variable quantity of the linear temperature sensor of NTC characteristic barrier layer, send fire alarm signal immediately.Because when the alarm time test of carrying out detector, the time that electrical quantity rate of change with linear temperature sensor of NTC characteristic barrier layer reaches the differential temperature alarming threshold value reaches the moment of constant temperature alarming threshold value early than the electrical quantity of the linear temperature sensor with fusible salt material layer, so can improve the response speed of line-type heat detector.
Description of drawings
Fig. 1 is the line-type heat detector one example structure synoptic diagram that can improve response speed provided by the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments the line-type heat detector and the alarm method thereof that can improve response speed provided by the invention is elaborated.
Embodiment 1:
As shown in Figure 1, the line-type heat detector that can improve response speed provided by the invention comprises two parallel linear temperature sensor A that are provided with, B and be connected linear temperature sensor A simultaneously, the boxcar 10 of B one end; Wherein linear temperature sensor A is made up of two parallel detecting conductors that are provided with 4,5 and the parallel NTC characteristic barrier layer 6 that is arranged between the detecting conductor 4,5; Linear temperature sensor B by two parallel detecting conductors 7,8 that are provided with, parallelly be arranged on the fusible salt material layer 9 between the detecting conductor 7,8 and be coated on detecting conductor 7,8 and the oversheath of fusible salt material layer 9 outside 11 is formed.Parallel parallel, winding or the mode such as coaxial of comprising that be provided with between two detecting conductors 4,5 or 7,8.In addition, linear temperature sensor A, the other end of B can also connect the open circuit terminal resistance of supervision effect of not shown plaing simultaneously.In addition, can a shared detecting conductor between linear temperature sensor A, the B, detecting conductor 5,7 can be merged into a detecting conductor.
When breaking out of fire, be positioned at the linear temperature sensor A of scene of fire on the line-type heat detector that can improve response speed provided by the invention, B will raise because of the temperature of being heated, wherein the resistance value of the NTC characteristic barrier layer 6 of the last inside, heated part of linear temperature sensor A will change with the rising of temperature, but fused salt states of matter in the fusible salt material layer 9 of the last inside, heated part of linear temperature sensor B or electric conductivity also will be subjected to the influence of temperature rising and change, thereby make linear temperature sensor A, the electrical quantity of B also changes thereupon, be connected linear temperature sensor A this moment, the boxcar 10 of B one end will detect this variation immediately, in case the resistance change amount of linear temperature sensor A exceeds the differential temperature alarming threshold value of setting in the time period of setting, no matter whether the electrical quantity of linear temperature sensor B surpasses the constant temperature alarming threshold value, boxcar 10 sends fire alarm signal immediately.Described setting-up time section is 5～60s.In addition, described differential temperature alarming threshold value is empirical value or obtains by experiment, is prerequisite to satisfy the testing requirements of being failure to actuate of detector by prescribed by standard.
Embodiment 2:
Present embodiment is the improvement on embodiment 1 basis: one that is about in two detecting conductors 4,5 of above-mentioned linear temperature sensor A is adopted thermocouple wire to make, thereby form a linear temperature sensor A with thermocouple characteristic with another root detecting conductor, boxcar 10 will send fire alarm signal according to voltage (electromotive force) the value rate of change of linear temperature sensor A this moment.
Claims (5)
1, a kind of line-type heat detector that can improve response speed is characterized in that: the described line-type heat detector that can improve response speed comprises two parallel linear temperature sensor A, B that are provided with and the boxcar (10) that is connected linear temperature sensor A, B one end simultaneously; Wherein linear temperature sensor A is made up of two parallel detecting conductors (4,5) that are provided with and the parallel NTC characteristic barrier layer (6) that is arranged between the detecting conductor (4,5); Linear temperature sensor B is by two parallel detecting conductors (7 that are provided with, 8), the parallel detecting conductor (7 that is arranged on, 8) the fusible salt material layer (9) between and be coated on detecting conductor (7,8) and oversheath (11) that fusible salt material layer (9) is outside is formed.
2, the line-type heat detector that can improve response speed according to claim 1 is characterized in that: can a shared detecting conductor between described linear temperature sensor A, the B.
3, the line-type heat detector that can improve response speed according to claim 1 and 2 is characterized in that: a detecting conductor among the described linear temperature sensor A is a thermocouple wire.
4, a kind of alarm method that can improve the line-type heat detector of response speed as claimed in claim 1, it is characterized in that: the described alarm method that can improve the line-type heat detector of response speed comprises the following step that carries out in order:
(1) boxcar is in real time to the temperature of linear temperature sensor A and linear temperature sensor B or the stage that electrical quantity detects;
When (2) in boxcar detects the time period that the resistance change amount of linear temperature sensor A or magnitude of voltage variable quantity setting, exceeding corresponding setting differential temperature alarming threshold value, no matter whether the electrical quantity of linear temperature sensor B surpasses constant temperature alarming threshold value, the stage of sending fire alarm signal immediately.
5, the alarm method that can improve the line-type heat detector of response speed according to claim 4 is characterized in that: the setting-up time section in the described step 2 is 5～60s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100569296A CN100454348C (en) | 2007-03-15 | 2007-03-15 | Linear temperature-sensing fire detector capable of raising response speed and alarming method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100569296A CN100454348C (en) | 2007-03-15 | 2007-03-15 | Linear temperature-sensing fire detector capable of raising response speed and alarming method thereof |
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| Publication Number | Publication Date |
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| CN101021964A CN101021964A (en) | 2007-08-22 |
| CN100454348C true CN100454348C (en) | 2009-01-21 |
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| CN103877688A (en) * | 2014-03-10 | 2014-06-25 | 青岛中阳消防科技有限公司 | Self-starting thermal power generation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793293A (en) * | 1996-05-13 | 1998-08-11 | Furon Company | Temperature sensing system for over-heat detection |
| US6958463B1 (en) * | 2004-04-23 | 2005-10-25 | Thermosoft International Corporation | Heater with simultaneous hot spot and mechanical intrusion protection |
| 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 |
| CN2847404Y (en) * | 2005-11-28 | 2006-12-13 | 沈阳市通适达自动灭火技术有限公司 | Re-settable linear differential determining temperature fire detector |
| CN201017433Y (en) * | 2007-03-15 | 2008-02-06 | 张卫社 | Linetype temperature-sensing fire disaster detector capable of enhancing response speed |
-
2007
- 2007-03-15 CN CNB2007100569296A patent/CN100454348C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5793293A (en) * | 1996-05-13 | 1998-08-11 | Furon Company | Temperature sensing system for over-heat detection |
| US6958463B1 (en) * | 2004-04-23 | 2005-10-25 | Thermosoft International Corporation | Heater with simultaneous hot spot and mechanical intrusion protection |
| 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 |
| CN2847404Y (en) * | 2005-11-28 | 2006-12-13 | 沈阳市通适达自动灭火技术有限公司 | Re-settable linear differential determining temperature fire detector |
| CN201017433Y (en) * | 2007-03-15 | 2008-02-06 | 张卫社 | Linetype temperature-sensing fire disaster detector capable of enhancing response speed |
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| CN101021964A (en) | 2007-08-22 |
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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 Industrial Fire Safety Ltd. Address before: The construction of the road in the middle of Xiqing Yangliuqing town, Tianjin District 55 post encoding: 300380 Applicant before: Zhang Weishe Co-applicant before: Li Gangjin |
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Denomination of invention: Linear temperature-sensing fire detector capable of raising response speed and alarming method thereof Effective date of registration: 20121010 Granted publication date: 20090121 Pledgee: Bank of America Ltd. Shanghai branch Pledgor: Sureland Industrial Fire Safety Ltd. Registration number: 2012990000591 |
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Effective date of registration: 20230808 Address after: 052260 No.16, East Ring Road, Jinzhou City, Hebei Province Patentee after: SURELAND INDUSTRIAL FIRE EQUIPMENT (HEBEI) Co.,Ltd. Address before: 101304 Beijing Airport South Industrial Zone Banbidian Lee Road No. 22 Patentee before: Sureland Industrial Fire Safety Ltd. |
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