CN102722955A - Rate-of-rise and fixed temperature fire detector with composition of device and line type temperature-induction - Google Patents
Rate-of-rise and fixed temperature fire detector with composition of device and line type temperature-induction Download PDFInfo
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- CN102722955A CN102722955A CN2012101955294A CN201210195529A CN102722955A CN 102722955 A CN102722955 A CN 102722955A CN 2012101955294 A CN2012101955294 A CN 2012101955294A CN 201210195529 A CN201210195529 A CN 201210195529A CN 102722955 A CN102722955 A CN 102722955A
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Abstract
A rate-of-rise and fixed temperature fire detector with composition of a device and line type temperature-induction is characterized by comprising a temperature-induction cable structure, and a plurality of dot type temperature-induction elements are parallelly installed in the temperature-induction cable: the dot type temperature-induction elements are parallelly installed between two metal conductors at intervals, an NTC (negative temperature coefficient) characteristic thermosensitive material layer is arranged between the two metal conductors which are separated by the parallelly installed dot type temperature-induction elements, electrical signal change of the NTC characteristic thermosensitive material layer and electrical signal change of each dot type temperature-induction element are monitored by a microcomputer modulator simultaneously; when a heat resistance value of the NTC characteristic thermosensitive material layer is smaller than or equal to a fixed threshold value, a temperature-induction alarm signal for the thermosensitive material layer is transmitted by the microcomputer modulator, when the dot type temperature-induction elements are heated and an action temperature is achieved, the dot type temperature-induction elements act and output fixed-temperature resistance signals, and the microcomputer modulator transmits the fixed-temperature alarm signals when detecting the fixed-temperature resistance signals; when heated rates of rise of temperature of the dot type temperature-induction elements reach a rate-of-rise alarm threshold temperature, the dot type temperature-induction elements act and output rate-of-rise resistance alarm signals, and the microcomputer modulator transmits rate-of-rise alarm signals when detecting the rate-of-rise resistance alarm signals.
Description
Technical field
The present invention relates to a kind of cable linear temperature sensing warning device, a kind of cable linear different constant temperature fire detector that recovers.
Technical background
Disclosed a kind of composite linear temperature-sensing fire disaster detector of prior art Chinese patent Granted publication CN101286262A and alarm method, composite linear temperature-sensing fire disaster detector comprise by two walk abreast bus-type temperature sensing element and parallelly connected NTC analog linear temperature sensing elements that are provided with and the boxcars that are connected linear temperature sensor one end; Wherein the bus-type temperature sensing element comprises the many parallel leads that are provided with and is in parallel installed with several intelligent temperature detecting modules between many leads; Parallel connection NTC analog linear temperature sensing element comprise two parallel detecting conductors that are provided with and parallel be arranged on detecting conductor between the NTC characteristic barrier layer; Boxcar is distinguished the electrical quantity on testbus type temperature sensing element and the parallelly connected NTC analog linear temperature sensing element, and it is carried out data fusion; The spacing LJ of distance is greater than 1 meter and smaller or equal to Lmax rice between the intelligent temperature detecting module on the described bus-type temperature sensing element, and Lmax is the maximal use length that allows when fire detector adopts NTC analog linear temperature sensing element separately under satisfying the GB prerequisite.
The shortcoming of this detector is:
Adopt two parallel linear temperature sensor and parallelly connected NTC analog linear temperature sensing elements that are provided with; Every linear temperature sensor needs processing respectively; And every linear temperature sensor adopts two detecting conductors at least; Processed complex, thus detector sensitivity and reliability are reduced, and cost raises.
Summary of the invention
The purpose of this invention is to provide the compound different constant temperature fire detector of a kind of device and line type temperature-sensitive, realize that traditional NTC simulated behavior amount line-type heat detector and bus-type temperature sensing element are compounded in two line-type heat detectors between the detecting conductor fully.
The different constant temperature fire detector that a kind of device and line type temperature-sensitive are compound; It is characterized in that being in parallel installed with the structure of the temperature sensing cable of a plurality of point type temperature sensing elements: between the two strip metal conductors; Be in parallel installed with the point type temperature sensing element at interval, and between the two strip metal conductors that are in parallel installed with point type temperature sensing element interval, NTC characteristic heat-sensitive material layer be set; Microcomputer modulator is monitored the electric signal of the NTC characteristic heat-sensitive material layer between the two strip metal conductors and the change in electric of point type temperature sensing element simultaneously; Owing to the NTC characteristic heat-sensitive material layer temperature-sensitive between two metallic conductors is heated; Resistance reduces; When resistance is less than or equal to one fixedly during threshold values, the temperature-sensitive alerting signal of heat-sensitive material layer is sent in the microcomputer modulation; When point type temperature sensing element temperature-sensitive is heated and reaches its operating temperature, point type temperature sensing element action and output fixed temperature resistance signal, when microcomputer modulation detection during to sudden change resistance signal, microcomputer is modulated and is sent the constant temperature alerting signal; When the heating rate that is heated when point type temperature sensing element temperature-sensitive reached its differential temperature alarm temperature, the action of point type temperature sensing element is output differential temperature resistance alerting signal also, and the microcomputer modulation detection is sent the differential temperature alerting signal when this suddenlys change resistance signal.
The outstanding advantage of a kind of device of the present invention and line type temperature-sensitive combined type detector is:
Because the design's temperature sensing cable structure is; Adopt to be provided with NTC characteristic heat-sensitive material layer between the two strip metal conductors, parallelly connected point type temperature sensing element is installed between the metallic conductor of temperature sensing cable one determining deviation, two strip metal conductors promptly are to survey line; Also be that the temperature sensing element power lead also is the signal transmssion line of point type temperature sensing element simultaneously; Simple in structure, outstanding advantage such as reliability is high, and cost is low.
Description of drawings
Fig. 1 is the prior art synoptic diagram;
The different constant temperature fire detector synoptic diagram that Fig. 2 device of the present invention and line type temperature-sensitive are compound.
Embodiment
Embodiment one: referring to Fig. 2; The different constant temperature fire detector that this device of the present invention and line type temperature-sensitive are compound; Be connected to form signal acquisition circuit with microcomputer modulator 6 with terminal resistance R respectively by the temperature sensing cable two ends; It is characterized in that being in parallel installed with the structure of the temperature sensing cable of a plurality of point type temperature sensing elements: with filling NTC characteristic heat-sensitive material layer 4 between two first metallic conductors 1 that are arranged in parallel, second metallic conductor 2; With between 0.3 meter～30 meters at the every interval of this temperature sensing cable, take the NTC characteristic heat-sensitive material layer 4 between first metallic conductor 1 and second metallic conductor 2 off then, between this position first metallic conductor 1 and second metallic conductor 2, be in parallel installed with point type temperature sensing element 3; Point type temperature sensing element 3 is linked with first metallic conductor 1 and 2 welding of second metallic conductor simultaneously, coat external sheath layer 5 again.
Said point type temperature sensing element 3 is designed to export fixedly operating temperature resistance signal and fixing heating rate differential temperature resistance signal, and also is provided with NTC characteristic heat-sensitive material layer 4 between first metallic conductor 1 second of temperature sensing cable and the metallic conductor 2.The change in electric of the NTC characteristic heat-sensitive material layer 4 between microcomputer modulator 6 monitoring first metallic conductors 1 and second metallic conductor 2; When detecting the resistance signal of NTC characteristic heat-sensitive material layer 4; If its temperature-sensitive heated resistance reduces; Microcomputer modulator 6 can detect less than a fixing threshold values, and microcomputer modulation at this moment will be sent the temperature-sensitive alerting signal; When point type temperature sensing element 3 temperature-sensitives be heated, when its temperature reaches the operating temperature of point type temperature sensing element 3, output fixed temperature resistance signal, microcomputer modulator 6 detect its sudden change resistance signal, the constant temperature alerting signal is sent in the microcomputer modulation; When point type temperature sensing element 3 temperature-sensitives are heated when making its heating rate reach the differential temperature alarm temperature of point type temperature sensing element 3, output differential temperature warning resistance signal, at this moment the microcomputer modulation detection is to sudden change resistance signal, and the differential temperature alerting signal is sent in the microcomputer modulation.
Said electric signal comprises; NTC characteristic heat-sensitive material layer between the two strip metal conductors; Because of the electric signal that electric current, voltage or the thermoelectrical potential that caused by thermogenetic resistance variations produces, reach the point type temperature sensing element because of receiving thermogenetic resistance signal, switching value signal, digital signal.Said point type temperature sensing element adopts digital temperature sensor, bus type temperature sensor, electronic temperature sensing switch, temperature sensitive switch.
Material that the present invention adopts is:
1, NTC characteristic material layer:
PEF, polypropylene, polyvinyl chloride, nylon, nitrile rubber, neoprene, natural rubber, negative temperature coefficient heat-sensitive resistance material or critical NTC coefficient thermal sensing material (versatile material).
2, metallic conductor:
Wire gage is between Ф 0.2～3.0mm.
Material can be selected steel wire, copper cash, iron wire (versatile material) for use.
3, point type temperature sensing element: digital temperature sensor, electronic temperature sensing switch, bus type temperature sensor, temperature sensitive switch (versatile material).
4, extrusion molding external sheath layer: material is the high molecular polymer insulating material, and the thickness of extrusion molding restrictive coating is between 0.1～3.0mm.(versatile material).
Claims (2)
1. device and the compound different constant temperature fire detector of line type temperature-sensitive; It is characterized in that being in parallel installed with the structure of the temperature sensing cable of a plurality of point type temperature sensing elements: between the two strip metal conductors; Be in parallel installed with the point type temperature sensing element at interval, and between the two strip metal conductors that are in parallel installed with point type temperature sensing element interval, NTC characteristic heat-sensitive material layer be set.
2. according to said a kind of device of claim 1 and the compound different constant temperature fire detector of line type temperature-sensitive, it is characterized in that: the point type temperature sensing element is installed between 0.3 meter～30 meters at the every interval of temperature sensing cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101955294A CN102722955A (en) | 2012-06-14 | 2012-06-14 | Rate-of-rise and fixed temperature fire detector with composition of device and line type temperature-induction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101955294A CN102722955A (en) | 2012-06-14 | 2012-06-14 | Rate-of-rise and fixed temperature fire detector with composition of device and line type temperature-induction |
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| CN102722955A true CN102722955A (en) | 2012-10-10 |
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| CN2012101955294A Pending CN102722955A (en) | 2012-06-14 | 2012-06-14 | Rate-of-rise and fixed temperature fire detector with composition of device and line type temperature-induction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341057A (en) * | 2020-03-11 | 2020-06-26 | 上海辉控电子科技有限公司 | Point type linear temperature-sensing fire detector |
| CN114255561A (en) * | 2021-12-21 | 2022-03-29 | 中车大连机车研究所有限公司 | Novel cable type linear temperature-sensing detector |
| CN114360190A (en) * | 2021-12-31 | 2022-04-15 | 上海震旦施密茨消防装备有限公司 | Fire alarm system for underground cable and working method thereof |
Citations (6)
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| EP0279969A1 (en) * | 1987-02-25 | 1988-08-31 | Xco International Incorporated | Heat sensitive cable and method of making same |
| CN2816948Y (en) * | 2005-09-05 | 2006-09-13 | 张卫社 | Anolog quantity linear temperature-sensing detection cable based on series thermosensitive characteristics |
| CN2824170Y (en) * | 2005-09-16 | 2006-10-04 | 张卫社 | Discrete thermistor parallel analog quantity line type temp sensing fire detecting cable |
| CN101101694A (en) * | 2007-07-25 | 2008-01-09 | 张卫社 | Alarming method for linear temperature-sensing fire hazard detector with double fixed temperature alarming threshold value |
| CN101192329A (en) * | 2006-12-01 | 2008-06-04 | 张卫社 | Linetype fire disaster detector temperature-differential alarming threshold calibration method for following temperature rising |
| US20110102183A1 (en) * | 2008-03-20 | 2011-05-05 | Siemens Aktiengesellschaft | Spatially resolved temperature measurement inside a spatial detection region |
-
2012
- 2012-06-14 CN CN2012101955294A patent/CN102722955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0279969A1 (en) * | 1987-02-25 | 1988-08-31 | Xco International Incorporated | Heat sensitive cable and method of making same |
| CN2816948Y (en) * | 2005-09-05 | 2006-09-13 | 张卫社 | Anolog quantity linear temperature-sensing detection cable based on series thermosensitive characteristics |
| CN2824170Y (en) * | 2005-09-16 | 2006-10-04 | 张卫社 | Discrete thermistor parallel analog quantity line type temp sensing fire detecting cable |
| CN101192329A (en) * | 2006-12-01 | 2008-06-04 | 张卫社 | Linetype fire disaster detector temperature-differential alarming threshold calibration method for following temperature rising |
| CN101101694A (en) * | 2007-07-25 | 2008-01-09 | 张卫社 | Alarming method for linear temperature-sensing fire hazard detector with double fixed temperature alarming threshold value |
| US20110102183A1 (en) * | 2008-03-20 | 2011-05-05 | Siemens Aktiengesellschaft | Spatially resolved temperature measurement inside a spatial detection region |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111341057A (en) * | 2020-03-11 | 2020-06-26 | 上海辉控电子科技有限公司 | Point type linear temperature-sensing fire detector |
| CN114255561A (en) * | 2021-12-21 | 2022-03-29 | 中车大连机车研究所有限公司 | Novel cable type linear temperature-sensing detector |
| CN114360190A (en) * | 2021-12-31 | 2022-04-15 | 上海震旦施密茨消防装备有限公司 | Fire alarm system for underground cable and working method thereof |
| CN114360190B (en) * | 2021-12-31 | 2024-03-22 | 上海震旦施密茨消防装备有限公司 | Fire alarm system for underground cable and working method thereof |
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Application publication date: 20121010 |