CN100557649C - A kind of cable linear temperature sensing fire detector - Google Patents
A kind of cable linear temperature sensing fire detector Download PDFInfo
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- CN100557649C CN100557649C CNB2008100108398A CN200810010839A CN100557649C CN 100557649 C CN100557649 C CN 100557649C CN B2008100108398 A CNB2008100108398 A CN B2008100108398A CN 200810010839 A CN200810010839 A CN 200810010839A CN 100557649 C CN100557649 C CN 100557649C
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Abstract
The purpose of this invention is to provide a kind of cable linear temperature sensing fire detector, realize multistage warning of temperature-sensitive and short warning road function.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 that two elastic metallic conductors coat CTR characteristic material layer 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.Resistance or change in voltage between two elastic metallic conductors of microcomputer modulator monitoring, a plurality of resistances or voltage alarm signal enabling value are set, judge the multistage constant temperature alerting signal of output, and according to the short circuit between two elastic conductors that are provided with in the microcomputer modulator internal memory, open circuit and microcomputer modulator disconnection fault resistance or voltage signal values, realize failure alarm signal output.
Description
Technical field
The present invention relates to a kind of cable linear temperature sensing warning device, a kind of cable linear temperature sensing fire detector of two-chip structure.
Technical background
Line-type heat detector of the prior art is a kind of purposes fire detector very widely, the present line-type heat detector application number 200510114820.4 that uses, referring to a kind of analog linetype temperature-fixing fire detecting cable of Fig. 1, it is characterized in that: form by two parallel detecting conductor 11 and 14, NTC characteristic barrier layer 13, fused insulating layers 12 that are provided with, stack is provided with described NTC characteristic barrier layer, fused insulating layer between two parallel detecting conductors, and the temperature of fusion scope of described fused insulating layer is 20 ℃～140 ℃.Above-mentioned analog linetype temperature-fixing fire detecting cable, when temperature sensing cable overheated, fused insulating layer fusing or softening, the distortional stress of two detecting conductor existence has been eliminated the insulation resistance that can melt insulation course deeply between two detecting conductors surveying the cable heated portion, survey cable and will change into common NTC analog linetype temperature-fixing fire detecting cable, resistance between two and the column conductor descends with the rising of temperature, and the size of the variable quantity of other electrical quantity that causes according to resistance or by resistance variations is carried out constant temperature and reported to the police.When temperature sensing cable overheated, short circuit between two detecting conductors, can not change into common NTC analog linetype temperature-fixing fire detecting cable after the short circuit, because the resistance of NTC characteristic barrier layer varies with temperature little, the temperature-sensitive warning sensitivity is low, so, need to propose a kind of new formula cable formula heat fire detector.
Summary of the invention
The purpose of this invention is to provide a kind of cable linear temperature sensing fire detector, realize multistage warning of temperature-sensitive and short circuit warning function.
A kind of cable linear temperature sensing 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: be to be the CTR characteristic edge material layer that 40 ℃～180 ℃ CTR characteristic edge material layer and high Vicat softening point are 60 ℃～300 ℃ by being provided with low-dimensional card softening point between two elastic metallic conductors, twist together in the stranded mode of back twist again, its twisting pitch is chosen between 20mm～200mm, makes temperature sensing cable.Resistance or change in voltage between two elastic metallic conductors of microcomputer modulator monitoring, a plurality of resistances or voltage alarm signal enabling value are set in the microcomputer modulator internal memory, according to the resistance that monitors or voltage signal whether more than or equal to setting value, be, judge output constant temperature alerting signal, and according to judging short circuit output constant temperature alerting signal between two elastic metallic conductors after the output constant temperature alerting signal, also can be according to the short circuit between two elastic conductors that are provided with in the microcomputer modulator internal memory, open circuit and microcomputer modulator disconnection fault resistance or voltage signal values, realize failure alarm signal output.
The outstanding advantage of a kind of cable linear temperature sensing 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 renewable type temperature-sensitive is reported to the police can be provided with one or more temperature alarmings 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 analog linetype temperature-fixing fire detecting cable structural representation of prior art;
Fig. 2 is the structural representation of a kind of cable linear temperature sensing fire detector embodiment 1 of the present invention;
Fig. 3 is a kind of cable linear temperature sensing fire detector embodiment 2 structural representations of the present invention;
Fig. 4 is a kind of cable linear temperature sensing fire detector embodiment 3 structural representations of the present invention.
Embodiment
A kind of cable linear temperature sensing fire detector, example 1 is seen Fig. 2, 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: what it adopted is 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, resistance between two elastic metallic conductors 1 is in 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 the CTR characteristic edge material layer 2 that elastic metallic conductor 1 coats, under the elastic force effect, the elastic metallic conductor 1 that coats CTR characteristic edge material layer 2 exposes, the elastic metallic conductor 1 that exposes is short-circuited with the CTR characteristic edge material layer 3 of another root elastic metallic conductor 1, microcomputer modulator 4 is monitored between two elastic metallic conductors 1 because temperature sensing cable is subjected to thermogenetic resistance or change in voltage, according to a plurality of resistances or voltage alarm signal enabling value are set in microcomputer modulator 4 internal memories, judge the multistage constant temperature alerting signal of output by microcomputer modulator 4, and according to judging short circuit output constant temperature alerting signal between two elastic metallic conductors after the output constant temperature alerting signal.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.Relay in the microcomputer modulator 4 can be judged output disconnection fault signal, temperature-sensitive is reported to the police, and not short circuit is the renewable type cable linear temperature sensing fire detector between back two elastic metallic conductors, and temperature-sensitive is reported to the police between back two elastic metallic conductors short circuit for not recovering the formula cable linear temperature sensing fire detector.
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, weaves 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 to have 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.
The elastic metallic conductor 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 microcomputer modulator 4 outages, resetting means.
The behavioral illustrations of conductor of the present invention and coating layer material:
1.CTR characteristic edge material layer:
The performance of selection material is: Vicat softening point is 40 ℃～300 ℃, and specific insulation is 108～10
20All plastics of Ω cm, elastomeric material, above-mentioned material also can have the material of NTC characteristic, ptc characteristics Material. Wherein the material of high Vicat softening point also can be the CTR characteristic material that does not melt.
2. elastic metallic conductor: specification is selected between Φ 0.2mm～3.0mm.
Material can be selected the alloy material of steel wire, memorial alloy line and above-mentioned material, wire external layer or plating Zinc, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating. Because of the metal wire rod Tensile, extend or be heated rear tool Some strength and elasticity are arranged, 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 plastic-aluminum or compound copper-plastics band are to be plastics or metal forming in the middle of the bilateral metal, and thickness is to select for use between 0.01mm～1.0mm, and width is preferred between 2～20m.
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 (10)
1, a kind of cable linear temperature sensing 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 the CTR characteristic edge material layer (3) that 40 ℃～180 ℃ CTR characteristic edge material layer (2) and high Vicat softening point are 60 ℃～300 ℃ by being provided with low-dimensional card softening point between two elastic metallic conductors (1), twist together in the stranded mode of back twist again, its twisting pitch is chosen between 20mm～200mm, makes temperature sensing cable.
2, a kind of cable linear temperature sensing 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 chosen between 20mm～200mm, makes temperature sensing cable.
3, a kind of cable linear temperature sensing fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be: it is coated with conductive layer (5) again behind 60 ℃～300 ℃ the CTR characteristic edge material layer (3) that an elastic metallic conductor (1) coats high Vicat softening point, another root elastic metallic conductor (1) coating low-dimensional card softening point is 40 ℃～180 ℃ a CTR characteristic edge material layer (2), two have the core of different clads to twist together in the stranded mode of back twist, its twisting pitch is chosen between 20mm～200mm, makes temperature sensing cable.
4, a kind of cable linear temperature sensing 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 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), or 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 chosen between 20mm～200mm.
5, a kind of cable linear temperature sensing fire detector according to claim 1 is characterized in that the structure of temperature sensing cable can also be: weave external sheath layer or extrusion molding or wrapped external sheath layer again after having the core of clad to twist together in the stranded mode of back twist.
6, a kind of cable linear temperature sensing 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 cable linear temperature sensing fire detector according to claim 1, it is characterized in that 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 cable linear temperature sensing fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable: described conductive layer (5) is interrupted conducting aluminium-plastic tape or compound copper-plastics band or metal forming, aluminium-plastic tape or compound copper-plastics band are that the middle layer is plastics, both sides are metal level up and down, the metal of wherein interrupted conducting aluminium-plastic tape or compound copper-plastics band or metal forming disconnects fore-and-aft distance to be chosen between 0.2mm～500mm, and the survival length of every section metal level is less than 2000mm.
9, a kind of cable linear temperature sensing fire detector according to claim 1 is characterized in that the structure of temperature sensing cable can also be: CTR characteristic edge material layer (2), CTR characteristic edge material layer (3) also have the material layer of NTC, ptc characteristics; 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.
10, a kind of cable linear temperature sensing fire detector according to claim 1 is characterized in that: according to judging short circuit output constant temperature alerting signal between two elastic metallic conductors after the output constant temperature alerting signal.
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| CNB2008100108398A CN100557649C (en) | 2008-03-31 | 2008-03-31 | A kind of cable linear temperature sensing fire detector |
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| CNB2008100108398A CN100557649C (en) | 2008-03-31 | 2008-03-31 | A kind of cable linear temperature sensing fire detector |
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| CN100557649C true CN100557649C (en) | 2009-11-04 |
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Application publication date: 20080903 Assignee: Shenyang Putaian Technology Co.,Ltd. Assignor: Zhang Chen Contract record no.: 2014210000036 Denomination of invention: Cable type linear temperature-sensing fire disaster detector Granted publication date: 20091104 License type: Exclusive License Record date: 20140505 |
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Effective date of registration: 20160413 Address after: Shen Liaodong road Tiexi District of Shenyang City, Liaoning province 110022 47-2 Acer international city 31-2 Patentee after: Shenyang Putaian Technology Co.,Ltd. Address before: Shenyang City, Liaoning City Road 110011, Shenhe District 35 block A No. 3 Patentee before: Zhang Chen |