CN101256704A - Past retrieve cable type linear temperature-sensing fire disaster detector - Google Patents
Past retrieve cable type linear temperature-sensing fire disaster detector Download PDFInfo
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- CN101256704A CN101256704A CNA2008100108400A CN200810010840A CN101256704A CN 101256704 A CN101256704 A CN 101256704A CN A2008100108400 A CNA2008100108400 A CN A2008100108400A CN 200810010840 A CN200810010840 A CN 200810010840A CN 101256704 A CN101256704 A CN 101256704A
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Abstract
The invention is to provide an unrecoverable cable linear temperature sensing fire probe which realizes recoverable temperature sensing multilevel alarm. Both ends of the temperature sensing cable are respectively connected to a microcomputer modulator and a terminal resistor to form a closed circuit signal collecting circuit, characterized in that the structure of the temperature sensing cable is: two elastic metal conductors adopted respectively coat CTR special material layer with different Vicat softening point, two cores with different coat layers intertwisted in back-twist intertwist way. The intertwisted node distance is preferably between 20mm to 200mm to prepare the temperature sensing cable. The microcomputer modulator monitors the resistance value or voltage alternation between two elastic metal conductors, arranging two resistance values or voltage alarming signal starting values in a memory of the microcomputer modulator to realize double level constant temperature alarming signal output and realizes a malfunction alarming signal output according to the short circuit, the open circuit between the two elastic metal conductors and power cut of the microcomputer modulator.
Description
Technical field
The present invention relates to fire alarm installation, a kind of beyond-retrieve-type cable-type line-type heat detector of two-chip structure.
Technical background
A kind of irrecoverable linear temperature-sensitive detector of the prior art with the short trouble warning, application number ZL 200620133478.2 sees Fig. 1: this detector comprises the detection cable, resistance, with the resistance signal measurement mechanism, the detection cable comprises, two detecting conductors 11,12 are arranged on two semiconductor material layer 14 and fused insulating layers 13 between the detecting conductor.Infinitely great between 11,12 resistances of two detecting conductors under the normal condition, when 13 fusings of temperature rising fused insulating layer, detecting conductor 11 is reported a fire with semiconductor material layer 14 short circuits, when be heated or the external force effect under two detecting conductors, 11,12 short circuit Times short troubles.
Above-mentioned a kind of irrecoverable linear temperature-sensitive detector of reporting to the police with short trouble in use because of detector can only be exported the one-level fire alarm, is being subjected under the external force situation wrong report that also is short-circuited easily of detecting conductor 11 and semiconductor material layer 14.So, need to propose a kind of new beyond retrievable double-temperature alarm short-circuit, open circuit fault output line-type heat detector, to improve line-type heat detector reliability in use.
Summary of the invention
The purpose of this invention is to provide a kind of beyond-retrieve-type cable-type line-type heat fire detector, realize the multistage warning function of renewable type temperature-sensitive.
A kind of beyond-retrieve-type cable-type line-type heat fire detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator and terminal resistance respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: what it adopted is two elastic metallic conductors, coat the CTR characteristic material layer of different Vicat softening points respectively, two have the core of different clads to twist together in the stranded mode of back twist, its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.The resistance or the change in voltage that produce between two elastic metallic conductors of microcomputer modulator monitoring, two resistances or voltage alarm signal enabling value are set in the microcomputer modulator internal memory, realize the output of twin-stage constant temperature alerting signal, and according to the short circuit between two elastic conductors, open circuit and microcomputer modulator outage, realize failure alarm signal output.
The outstanding advantage of a kind of beyond-retrieve-type cable-type line-type heat fire detector of the present invention is: because adopt CTR characteristic material layer, so respond soon, the fire response time is shifted to an earlier date more than 5 seconds at least than prior art report to the police, for the incipient fire forecast gains time.
The temperature-sensitive alarm temperature of a kind of beyond-retrieve-type cable-type line-type heat fire detector of the present invention can be provided with one or two temperature alarming arbitrarily between 60 ℃-138 ℃, be suitable for wider temperature range.The product quality reliability height, cost is low, and temperature-sensitive warning sensitivity height is not used length restriction, can satisfy the performance requirement of GB16280-2005 " line-type heat detector " and supplementary provision.
Description of drawings
Fig. 1 is a kind of irrecoverable linear temperature-sensitive detector structural representation with the short trouble warning of prior art;
Fig. 2 is the structural representation of a kind of beyond-retrieve-type cable-type line-type heat fire detector embodiment 1 of the present invention;
Fig. 3 is a kind of beyond-retrieve-type cable-type line-type heat fire detector embodiment 2 structural representations of the present invention;
Fig. 4 is a kind of beyond-retrieve-type cable-type line-type heat fire detector embodiment 3 structural representations of the present invention.
Embodiment
A kind of beyond-retrieve-type cable-type line-type heat fire detector, example 1 is seen Fig. 2, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator and terminal resistance R1 respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be by two elastic metallic conductors 1, wherein to coat low-dimensional card softening point be 40 ℃～180 ℃ CTR characteristic edge material layer 2 to elastic metallic conductor 1, the high Vicat softening point of another root elastic metallic conductor 1 coating is 60 ℃～300 ℃ a CTR characteristic edge material layer 3, two have the core of different clads to twist together in the stranded mode of back twist, its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.When temperature sensing cable when allowing to use high ambient temperature following, the resistance between two elastic metallic conductors 1 is under the high-impedance state all the time, microcomputer modulator 4 detects less than resistance or change in voltage between two elastic metallic conductors 1; When temperature sensing cable is heated, and when temperature surpasses the Vicat softening point of elastic metallic conductor 1 coating CTR characteristic edge material layer 2, the elastic metallic conductor 1 that coats CTR characteristic edge material layer 2 under the elastic force effect exposes, the elastic metallic conductor 1 that exposes is short-circuited with the CTR characteristic edge material layer 3 that another root elastic metallic conductor 1 coats, and resistance when the CTR characteristic edge material layer 3 that microcomputer modulator 4 coats according to elastic metallic conductor 1 and another root elastic metallic conductor 1 is short-circuited or voltage are judged output one-level constant temperature alerting signal; Judge that according to one-level constant temperature alerting signal short circuit microcomputer modulator 4 is judged output secondary constant temperature alerting signal between two elastic metallic conductors 1, but when microcomputer modulator 4 does not send one-level constant temperature alerting signal, short circuit microcomputer modulator 4 output short-circuit failure alarm signals then between two elastic metallic conductors 1; When two elastic metallic conductors 1 wherein one open circuit, the relative ∞ of resistance is big between two elastic metallic conductors 1, then judges output open circuit fault signals by microcomputer modulator 4; The electric signal process unit relay can be judged output disconnection fault signal.
The structure of the foregoing description 1～embodiment 3 also can be after having the core of clad to twist together in the stranded mode of back twist, to weave external sheath layer again.
The structure of the foregoing description 1～embodiment 3 also can be to have the core of clad to twist together in the stranded mode of back twist, again extrusion molding or wrapped external sheath layer.
The structure of the foregoing description 1～embodiment 3 also can be after having the core of clad to twist together in the stranded mode of back twist, coats one deck para tape earlier, again extrusion molding or wrapped external sheath layer or braiding external sheath layer.
Two elastic metallic conductors 1 of the foregoing description 1～embodiment 3 can be with a kind of material, also can be two kinds of unlike materials.
CTR characteristic edge material layer 2,3 in the foregoing description 1～embodiment 3 structures is NTC, ptc characteristics material layer also.
The microcomputer modulator 4 of the foregoing description 1～embodiment 3 detects and comprises sampling, storage, contrast, and the sampling time is selected at 0.5S～5S.
The microcomputer modulator 4 of the foregoing description 1～embodiment 3 is judged output alarm signal, can judge output alarm signal through repeated detection sampling storage contrast.Can have auto-lock function after the warning, can reset by outage, the resetting means of microcomputer modulator 4.
The behavioral illustrations of conductor of the present invention and coating layer material:
1.CTR characteristic edge material layer:
Select the performance of insulating material to be: Vicat softening point is 40 ℃～300 ℃, and specific insulation is 10
8～10
20All plastics of Ω cm, elastomeric material, above-mentioned material also can have the material of NTC characteristic, ptc characteristics.The CTR characteristic material that also can cannot not be molten of the material of high Vicat softening point wherein.
2. elastic metallic conductor: specification is selected for use between Φ 0.2mm～3.0mm.
Material can be selected the alloy material of steel wire, memorial alloy line and above-mentioned material for use, wire external layer or zinc-plated, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating.Because of metal wire rod is subjected to have certain intensity and elasticity after stretching, the extension, so be called the elastic metallic conductor.
3, extrusion molding external sheath layer (versatile material): material can be high molecular polymer insulating material or PTC, NTC, CTR characteristic macromolecule polymer material, also can be the semiconductor macromolecule polymer material.The thickness of extrusion molding restrictive coating is selected between 0.1mm～2.0mm.
4, conductive layer (versatile material): material can be that semiconducting paper, electric conductor paper, semiconductor fiber, conductive fiber, plastic-aluminum or compound copper-plastics band are to be plastics or metal forming in the middle of the bilateral metal, thickness is to select for use between 0.01mm～1.0mm, width is preferred between 2m～20m, or the semiconductor macromolecule polymer material.
5, braiding external sheath layer (versatile material): material can be all plastics, metal monofilament, and the line footpath is selected for use between Φ 0.01mm～1.0mm.
6, para tape (versatile material): material can be all plastics, and thickness is to select for use between 0.01mm～1.0mm, and width is preferred between 2mm～20mm.
Claims (9)
1, a kind of beyond-retrieve-type cable-type line-type heat fire detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator (4) and terminal resistance (R1) respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: be to be that 40 ℃～180 ℃ CTR characteristic edge material layer (2), high Vicat softening point are 60 ℃～300 ℃ CTR characteristic edge material layer (3) by being provided with low-dimensional card softening point between two elastic metallic conductors (1), twist together in the stranded mode of back twist, its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.
2, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: by two elastic metallic conductors (1), wherein an elastic metallic conductor (1) coating low-dimensional card softening point is 40 ℃～180 ℃ a CTR characteristic edge material layer (2), the high Vicat softening point of another root elastic metallic conductor (1) coating is 60 ℃～300 ℃ a CTR characteristic edge material layer (3), two have the core of different clads to twist together in the stranded mode of back twist, its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.
3, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: one has and coats the core coated with conductive layer (5) more outward that low-dimensional card softening point is 40 ℃～180 ℃ a CTR characteristic edge material layer (3), coating high Vicat softening point with another root is that the core of 60 ℃～300 ℃ CTR characteristic edge material layer (2) twists together in the stranded mode of back twist, its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.
4, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: be by two elastic metallic conductors (1), wherein the high Vicat softening point of an elastic metallic conductor (1) coating is 60 ℃～300 ℃ a CTR characteristic edge material layer (3), coat low-dimensional card softening point again and be 40 ℃～180 ℃ CTR characteristic edge material layer (2), perhaps elder generation's coating low-dimensional card softening point is 40 ℃～180 ℃ a CTR characteristic edge material layer (2), coat high Vicat softening point again and be 60 ℃～300 ℃ CTR characteristic edge material layer (3), twist together in the stranded mode of back twist with another root elastic metallic conductor (1), its twisting pitch is preferred between 20mm～200mm, makes temperature sensing cable.
5, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: after having the core of clad to twist together in the stranded mode of back twist, can weave external sheath layer or extrusion molding or wrapped external sheath layer more again.
6, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: have the core of clad to twist together in the stranded mode of back twist, coat one deck para tape earlier, again extrusion molding or wrapped external sheath layer or braiding external sheath layer.
7, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1 is characterized in that in the structure of temperature sensing cable: elastic metallic conductor (1) can be with a kind of material, also can be two kinds of unlike materials.
8, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable: conductive layer (5) is that semiconducting paper, electric conductor paper, semiconductor fiber, conductive fiber, plastic-aluminum or compound copper-plastics band are to be plastics or metal forming in the middle of the bilateral metal, thickness is to select for use between 0.01mm～1.0mm, width is preferred between 2m～20m, perhaps can also be the semiconductor macromolecule polymer material.
9, a kind of beyond-retrieve-type cable-type line-type heat fire detector according to claim 1 is characterized in that the structure of temperature sensing cable: CTR characteristic edge material layer (2) wherein, (3) are NTC, ptc characteristics material layer also; The CTR characteristic material that the material of the high Vicat softening point of CTR characteristic edge material layer (3) can cannot not be molten yet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100108400A CN101256704A (en) | 2008-03-31 | 2008-03-31 | Past retrieve cable type linear temperature-sensing fire disaster detector |
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| CNA2008100108400A CN101256704A (en) | 2008-03-31 | 2008-03-31 | Past retrieve cable type linear temperature-sensing fire disaster detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065420A (en) * | 2012-12-19 | 2013-04-24 | 邹志武 | Unrecoverable cable-type linear heat fire detector and alarm method thereof |
| CN106469495A (en) * | 2015-08-22 | 2017-03-01 | 青岛中阳消防科技股份有限公司 | A kind of compound fire alarm method and its line-type heat detector |
-
2008
- 2008-03-31 CN CNA2008100108400A patent/CN101256704A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065420A (en) * | 2012-12-19 | 2013-04-24 | 邹志武 | Unrecoverable cable-type linear heat fire detector and alarm method thereof |
| CN106469495A (en) * | 2015-08-22 | 2017-03-01 | 青岛中阳消防科技股份有限公司 | A kind of compound fire alarm method and its line-type heat detector |
| CN106469495B (en) * | 2015-08-22 | 2018-11-02 | 青岛中阳消防科技股份有限公司 | A kind of compound fire alarm method and its line-type heat detector |
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Open date: 20080903 |