CN101149865A - Irrecoverable type cable type line type fixed temperature fire detector - Google Patents
Irrecoverable type cable type line type fixed temperature fire detector Download PDFInfo
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- CN101149865A CN101149865A CNA2007101579897A CN200710157989A CN101149865A CN 101149865 A CN101149865 A CN 101149865A CN A2007101579897 A CNA2007101579897 A CN A2007101579897A CN 200710157989 A CN200710157989 A CN 200710157989A CN 101149865 A CN101149865 A CN 101149865A
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Abstract
A non-restored cable-type fixed-temperature fire detector is disclosed. Two ends of a heat-sensing cable are respectively connected with a resistance signal processor and a terminal resistor to form a closed-circuit signal collection circuit. It is characterized in that the structure of the heat-sensing cable is two elastic metal conductors respectively coated with an insulation material layer, in which one is again coated with a shield layer. The two conductor wires with different coatings are twisted or wound together and an external jacket is extruded on to produce the heat-sensing cable. In the external jacket one or more shield leads can be wound or axially placed. The resistance-signal processor judges the detected resistance value or voltage change signal and sends alarming signals, and according to the resistance change of conductors the resistance-signal processor judges and sends short circuit and break circuit fault signals and powered-off fault signal of the resistance signal processor.
Description
Technical field
The present invention relates to the fire detector of fire-fighting domain, a kind of Irrecoverable type cable type line type fixed temperature fire detector can be provided, have constant temperature warning and short circuit, newspaper fault output function opens circuit, cuts off the power supply.
Background technology
Line-type heat detector of the prior art is a kind of purposes fire detector very widely, the present on-off value linear temperature-sensitive detector that uses, and two elastic conductors 10 in this sheath 12 are used coating plastic insulation material layer 11 respectively, and twist together.When the cable heating temperature of detector rises to the melting point after-tack or the thawing of plastic layer, elastic conductor is under the elastic force effect, and alerting signal is sent in two elastic conductor short circuits.The advantage of this detector is: after the temperature of any point on the detector arrives the alarm temperature of setting, but detector is short-circuit alarming all, detector alarm sensitivity is irrelevant with the length of being heated, shortcoming is when being subjected to accidents such as mechanical external force extruding or damaged by rats to cause short circuit when detector, detector is output alarm signal also, can't distinguish short-circuit, open circuit, the disconnection fault signal.
Summary of the invention
The purpose of this invention is to provide a kind of Irrecoverable type cable type line type fixed temperature fire detector, be connected to form the closed circuit signaling Acquisition Circuit with resistance signal treating apparatus and terminal resistance respectively by the temperature sensing cable two ends, terminal resistance R, resistance value is preferred at 50 Ω～50M Ω.The structure that it is characterized in that temperature sensing cable: be to distinguish the coated insulation material layer outward by two elastic metallic conductors, wherein one coats screen layer again, two cores that different clads are arranged are stranded or be intertwined, it is stranded or the winding pitch is preferred between 20mm～200mm, the extrusion molding external sheath layer is made temperature sensing cable then, when temperature sensing cable is heated and surpass the temperature sensing cable design temperature, the insulation material layer that coats the elastic metallic conductor is softening respectively, under the effect of elastic metallic conductor elastic force, the elastic metallic conductor of coated insulation material layer exposes respectively, the elastic metallic conductor that exposes contacts with screen layer, detect two elastic metallic conductors in real time by the resistance signal treating apparatus, resistance that contacts with screen layer or magnitude of voltage variable signal are judged output alarm signal according to detected resistance or magnitude of voltage variable signal respectively.The resistance signal treating apparatus is judged output short-circuit, is opened circuit and resistance signal treating apparatus disconnection fault signal according to the conductor change in resistance.
The outstanding advantage of a kind of Irrecoverable type cable type line type fixed temperature fire detector of the present invention is: because the present invention adopts two activation signals to judge output alarm signal, the reliability height, the false alarm of having avoided non-fire accidentalia to cause, and anti-electromagnetic interference (EMI) is strong, temperature sensing cable is simple in structure, and cost is low.
Description of drawings
Fig. 1 is a kind of beyond retrievable linear constant temperature of prior art disaster detection cable structural representation;
Fig. 2～4th, the structural representation of a kind of Irrecoverable type cable type line type fixed temperature fire detector example 1～example 3 of the present invention.
Embodiment
A kind of Irrecoverable type cable type line type fixed temperature fire detector, example 1 is seen Fig. 2, is connected to form the closed circuit signaling Acquisition Circuit with resistance signal treating apparatus 5 and terminal resistance R respectively by the temperature sensing cable two ends, the resistance of terminal resistance R is preferred at 50 Ω～50M Ω.The structure that it is characterized in that temperature sensing cable: be by two elastic metallic conductors, 1 outer coated insulation material layer 2 respectively, one or two coated with conductive layer 3 wherein, two cores that similar and different clad arranged are stranded or be intertwined, it is stranded or the winding pitch is preferred between 20mm～200mm, and extrusion molding external sheath layer 4 is made temperature sensing cable then.Also can in external sheath layer 4, twine again or the axially suitable shielded conductor of putting more than one or one 7.
When temperature sensing cable is heated and surpass the temperature sensing cable design temperature, the insulation material layer 2 that coats elastic metallic conductor 1 is softening respectively, under the elastic force effect of elastic metallic conductor 1, the elastic metallic conductor 1 of coated insulation material layer 2 exposes respectively, the elastic metallic conductor 1 that exposes contacts with conductive layer 3, in resistance signal treating apparatus 5 internal memories, be provided with the electric signal warning startup value of four resistances or voltage signal variation range, resistance signal treating apparatus 5 detects two resistance or magnitude of voltage variable signals that elastic metallic conductor 1 contacts with conductive layer 3 respectively in real time, judges output alarm signal according to detected twice resistance or voltage value signal changing value.Short circuit between two elastic metallic conductors 1, resistance signal treating apparatus 5 is judged the output short-circuit fault-signal according to conductor resistance or voltage change signal value.Two elastic metallic conductors 1 wherein one open circuit, resistance signal treating apparatus 5 is judged output open circuit fault signal according to conductor resistance or voltage change signal value.During 5 outages of resistance signal treating apparatus, according to relay output disconnection fault signal.
The insulation material layer of temperature sensing cable can adopt the insulation material layer of setting different Vicat softening points according to report to the police warm grade of constant temperature, and making alarm temperature is 60 ℃, 70 ℃, 85 ℃, 105 ℃, 138 ℃, 180 ℃ six grades.
The temperature sensing cable structure of 3 one kinds of Irrecoverable type cable type line type fixed temperature fire detectors of the foregoing description 1～example can also be in external sheath layer 4 coated insulation belt 8.
3 one kinds of Irrecoverable type cable type line type fixed temperature fire detectors of the foregoing description 1～example, the core that clad is arranged can be cores or more than the core.
3 one kinds of Irrecoverable type cable type line type fixed temperature fire detectors of the foregoing description 1～example, wherein conductive layer 3 or screen layer 6 or shielded conductor 7 can with two elastic metallic conductors 1 in any one between be connected a resistance as detecting resistance.
Material and behavioral illustrations that conductor of the present invention and conductor clad are adopted:
1, insulation material layer:
Select the performance of insulating material to be: Vicat softening point is 40 ℃～180 ℃, and specific insulation is 10
10～10
18All plastics of Ω cm, elastomeric material.
2, elastic metallic conductor: specification is selected for use between Φ 0.2～3.0mm.
Material can select for use steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel wire and above-mentioned material alloy material and, 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, shielded conductor: specification is selected for use between Φ 0.2～3.0mm, and material is all conductive wires.
4, screen layer: adopt plastic-aluminum or compound copper-plastics band, metal foil material.
5, conductive layer: plastic-aluminum or compound copper-plastics band, metal forming, thickness are to select for use between 0.01～1.0mm, and width is preferred between 5～20mm, also can be that specific volume resistance is 10
-2～10
4Between all plastics, rubber, lacquer, stupalith or above-mentionedly have NTC, CTR, a ptc characteristics material, thickness is 0.01～1.0mm.
6, external sheath layer: 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 0.1～2.0mm.
Claims (6)
1. an Irrecoverable type cable type line type fixed temperature fire detector is connected to form the closed circuit signaling Acquisition Circuit with resistance signal treating apparatus (5) and terminal resistance R respectively by the temperature sensing cable two ends, terminal resistance R, and resistance value is preferred at 50 Ω～50M Ω.The structure that it is characterized in that temperature sensing cable: be by the outer coated insulation material layer (2) respectively of two elastic metallic conductors (1), wherein one or two coats screen layer (3) again, two cores that similar and different clad arranged are stranded or be intertwined, it is stranded or the winding pitch is preferred between 20mm～200mm, and extrusion molding external sheath layer (4) is made temperature sensing cable then.Also can in external sheath layer (4), twine again or the axially suitable shielded conductor of putting more than one or (7).When temperature sensing cable is heated and surpass the temperature sensing cable design temperature, the insulation material layer (2) that coats elastic metallic conductor (1) is softening respectively, under the elastic force effect of elastic metallic conductor (1), the elastic metallic conductor (1) of coated insulation material layer (2) exposes respectively, the elastic metallic conductor (1) that exposes contacts with conductive layer (3), in resistance signal treating apparatus (5) internal memory, be provided with the electric signal warning startup value of four resistances or voltage signal variation range, resistance signal treating apparatus (5) detects resistance or the magnitude of voltage variable signal that two elastic metallic conductors (1) contact with conductive layer (3) respectively in real time, judges output alarm signal according to detected twice resistance or voltage value signal changing value.Short circuit between two elastic metallic conductors (1), resistance signal treating apparatus (5) is judged the output short-circuit fault-signal according to conductor resistance or voltage change signal value.Two elastic metallic conductors (1) wherein one open circuit, resistance signal treating apparatus (5) is judged output open circuit fault signal according to conductor resistance or voltage change signal value.During resistance signal treating apparatus (5) outage, according to relay output disconnection fault signal.
2. a kind of Irrecoverable type cable type line type fixed temperature fire detector according to claim 1, the structure that it is characterized in that temperature sensing cable can also be by the outer coated insulation material layer (2) respectively of two elastic metallic conductors (1), one or two coated with conductive layer (3) wherein, two cores that similar and different clad arranged are stranded or be intertwined, coat screen layer (6) again, last extrusion molding external sheath layer (4) is made temperature sensing cable.
3. a kind of Irrecoverable type cable type line type fixed temperature fire detector according to claim 1 is characterized in that the temperature sensing cable structure can also be to twine in external sheath layer (4) or in the screen layer (6) or the axially suitable shielded conductor of putting more than one or (7) again.
4. according to the described a kind of Irrecoverable type cable type line type fixed temperature fire detector of claim 1～claim 3, it is characterized in that the temperature sensing cable structure can also be a coated insulation belt (8) in external sheath layer (4).
5. according to the described a kind of Irrecoverable type cable type line type fixed temperature fire detector of claim 1～claim 3, it is characterized in that temperature sensing cable, the core that clad is arranged can be a core or more than the core.
6. according to the described a kind of Irrecoverable type cable type line type fixed temperature fire detector of claim 1～claim 3, it is characterized in that conductive layer (3) wherein or screen layer (6) or shielded conductor (7) can with two elastic metallic conductors (1) in any one between be connected a resistance again as detecting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101579897A CN100495458C (en) | 2007-11-07 | 2007-11-07 | Irrecoverable type cable type line type fixed temperature fire detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101579897A CN100495458C (en) | 2007-11-07 | 2007-11-07 | Irrecoverable type cable type line type fixed temperature fire detector |
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| Publication Number | Publication Date |
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| CN101149865A true CN101149865A (en) | 2008-03-26 |
| CN100495458C CN100495458C (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101579897A Active CN100495458C (en) | 2007-11-07 | 2007-11-07 | Irrecoverable type cable type line type fixed temperature fire detector |
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Cited By (4)
| 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 |
| CN106837281A (en) * | 2016-11-15 | 2017-06-13 | 中国石油天然气股份有限公司 | The heating method for early warning and device of a kind of electric heating cable |
| CN107705495A (en) * | 2017-11-16 | 2018-02-16 | 黄继洲 | A kind of multi signal beyond-retrieve-type cable-type line-type heat fire detector |
| EP3564690A1 (en) * | 2018-05-03 | 2019-11-06 | ETH Zurich | A cable assembly |
-
2007
- 2007-11-07 CN CNB2007101579897A patent/CN100495458C/en active Active
Cited By (5)
| 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 |
| CN106837281A (en) * | 2016-11-15 | 2017-06-13 | 中国石油天然气股份有限公司 | The heating method for early warning and device of a kind of electric heating cable |
| CN107705495A (en) * | 2017-11-16 | 2018-02-16 | 黄继洲 | A kind of multi signal beyond-retrieve-type cable-type line-type heat fire detector |
| EP3564690A1 (en) * | 2018-05-03 | 2019-11-06 | ETH Zurich | A cable assembly |
| WO2019211754A1 (en) * | 2018-05-03 | 2019-11-07 | Eth Zurich | A cable assembly |
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| Publication number | Publication date |
|---|---|
| CN100495458C (en) | 2009-06-03 |
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Application publication date: 20080326 Assignee: Shenyang Putaian Technology Co.,Ltd. Assignor: Zhang Chen Contract record no.: 2014210000036 Denomination of invention: Irrecoverable type cable type line type fixed temperature fire detector Granted publication date: 20090603 License type: Exclusive License Record date: 20140505 |
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Addressee: Liu Yuanbo Document name: Notification that Application Deemed not to be Proposed |
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Effective date of registration: 20170613 Address after: Shen Liaodong road Tiexi District of Shenyang City, Liaoning province 110022 47-2 Acer international city A block 31 building -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 |
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