CN101290703B - Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector - Google Patents
Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector Download PDFInfo
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- CN101290703B CN101290703B CN2008100113983A CN200810011398A CN101290703B CN 101290703 B CN101290703 B CN 101290703B CN 2008100113983 A CN2008100113983 A CN 2008100113983A CN 200810011398 A CN200810011398 A CN 200810011398A CN 101290703 B CN101290703 B CN 101290703B
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Abstract
The invention aims to provide a cable type linear temperature-sensing detector for sectionally monitoring a temperature-sensing electric signal with multi-circuit, consisting of a closed-circuit signal acquisition circuit formed by an electric signal detection device and a terminating resistance which are connected with two ends of a temperature-sensing cable respectively. The temperature-sensing cable has two or more than two detecting conductors which are sectionally coated with an NTC characteristic material layer and an insulation material layer respectively; the length of each section detecting conductor coated by the insulation material layer is twice the length of each section detecting conductor coated by the NTC characteristic material layer; two detecting conductors with coatings are alternately arranged, the arrangement can be parallel, intertwisted or wound;, and a conducting layer is wrapped or extruded, and an outer restrictive coating is extruded to manufacture the temperature-sensing cable. The cable type linear temperature-sensing detector can realize functions of differential temperature warning, fixed temperature warning, differential-fixed temperature warning, and the warning for short circuit, open circuit and outage failure, and can be used repeatedly.
Description
Technical field
The present invention relates to a kind of cable type linear temperature-sensitive detector of multi-loop sectional monitoring temperature-sensing electrical signal, particularly relate to a kind of influence of length that reduce to be heated to alarm temperature, environment temperature is little to alarm temperature influence, and that can avoid occurring reporting by mistake the fire alarm problem is used for the renewable type line-type heat detector.
Technical background
Line-type heat detector of the prior art is a kind of broad-spectrum fire detector, the present renewable type line-type heat detector that uses: referring to Fig. 1, detector is made up of temperature sensing cable, resistance signal measurement mechanism, temperature sensing cable is by two detecting conductors, the 10 outer NTC plastic layers 11 that coat respectively, two detecting conductors twist together, oversheath 12 is arranged, the signal input part of resistance signal measurement mechanism 13 is connected with described detecting conductor, is used to measure the resistance situation between described two detecting conductors.When the detector temperature sensing cable was heated, its temperature rose thereupon, and at first the resistance of the NTC plastic layer 11 between two conductors descends, and when its resistance drops to a setting value, the resistance signal measurement mechanism will produce and output alarm signal.The shortcoming of this detector is: the alarm temperature of detector is relevant with the factors such as the length of being heated, heating temperature, environment temperature and use length of temperature sensing cable, can not right judgement fire alarm temperature, make the accuracy of this detector alarm temperature, reliably lower.Another kind of prior art, referring to Fig. 2, detector is made up of temperature sensing cable, resistance signal measurement mechanism, temperature sensing cable is by two parallel detecting conductors that are provided with 10 and a parallel NTC or CTR characteristic material layer 11, one interrupted conductive layer 15 and fused insulating layers 14 that are arranged between two detecting conductors 10, and in two detecting conductors 10 at least one be elastic conductor.When the linear temperature sensitive cable on this detector is heated and reaches uniform temperature, the fused insulating layer 14 of inside, heated part will begin to occur softening or melt, at this moment, under the elastic force effect of two detecting conductors 10, wherein detecting conductor 10 will and interrupted conductive layer 15 between be in contact with one another conducting, thereby make this contact conducting region form a line-type heat detector with conventional NTC or CTR characteristic, when the heated part reaches alarm temperature in this case, resistance signal measurement mechanism 13 output alarm signals when the resistance value between the resistance signal measurement mechanism 13 detected detecting conductors 10 reaches setting value.The shortcoming of this detector is: in the use of detector, increase along with alarm times, the cumulative length of contact conducting region will constantly increase, make the alarm temperature of detector relevant with the factors such as the length of being heated, heating temperature and use length of temperature sensing cable, can not right judgement fire alarm temperature, make the accuracy of this detector alarm temperature, reliability lower.
Summary of the invention
The object of the present invention is to provide a kind of cable type linear temperature-sensitive detector of multi-loop sectional monitoring temperature-sensing electrical signal, this detector is to be connected to form the closed circuit signaling Acquisition Circuit with electrical signal detection device and terminal resistance respectively by the temperature sensing cable two ends.Temperature sensing cable has three detecting conductors, the segmentation of three detecting conductor difference coats NTC characteristic material layer, insulation material layer, the length of every section coated insulation material layer is every section two times of coating NTC characteristic material layer length, three have the detecting conductor of clad to be staggered, can be parallel, stranded, twine and to be set together, wrapped then or extrusion molding conductive layer, the extrusion molding external sheath layer is made temperature sensing cable again, can realize that differential temperature is reported to the police, constant temperature is reported to the police, different constant temperature is reported to the police, short circuit, open circuit, the disconnection fault warning function, reusable.
The cable type linear temperature-sensitive detector that a kind of multi-loop sectional of the present invention is gathered electric signal compared with prior art has following advantage:
1,, significantly reduced the influence that temperature sensing cable warning precision is subjected to the environment for use temperature and uses length because the present invention adopts multi-loop sectional monitoring temperature-sensing electrical signal.
2, because the present invention adopts multi-loop sectional monitoring temperature-sensing electrical signal, when temperature sensing cable heated portion length when coating NTC characteristic material layer segment length, have only the electric signal in one or two loop to change, it is to be heated among a small circle or to be heated on a large scale that the electrical signal detection device can be analyzed temperature sensing cable, when temperature sensing cable is heated on a large scale, carry out reference by temperature-sensing electrical signal, realize temperature-sensitive warning precision is compensated and corrected the multiloop monitoring.
Description of drawings
Fig. 1 is a renewable type line-type heat detector structural representation in the prior art;
Fig. 2 is a line-type heat detector structural representation in the prior art;
The structural representation of the cable type linear temperature-sensitive detector of a kind of multi-loop sectional monitoring temperature-sensing electrical signal of Fig. 3.
Embodiment
A kind of cable type linear temperature-sensitive detector of multi-loop sectional monitoring temperature-sensing electrical signal, example 1 is seen Fig. 3, is to be connected to form multiloop closed circuit signaling Acquisition Circuit with electrical signal detection device 6 and terminal resistance R1, R2, R3 respectively by the temperature sensing cable two ends.It is characterized in that temperature sensing cable has three detecting conductors 1 and public pole to constitute multiloop, three detecting conductor 1 outer NTC characteristic material intervals 2 that coat at interval respectively, insulating material interval 3 connects to form, coat NTC characteristic material interval 2, the method of insulating material interval 3 can be an extrusion molding, twine, methods such as coating, detecting conductor 1 is coating NTC characteristic material interval 2, the coupling part of insulating material interval 3 connects with welding manner, the place of being welded to connect coats with para tape, the length of every section coated insulation material interval 3 is between 3m～50m, be every section two times of coating NTC characteristic material interval 2 length, wherein three have the detecting conductor 1 of clad to arrange with the clad interlace mode, to guarantee that temperature sensing cable when heated portion is less than or equal to coating NTC characteristic material interval 2 length, has only the electric signal in one or two loop to change; After the arrangement can be parallel, stranded, twine and to be set together, wrapped then conductive layer 4, conductive layer 4 are as the electric signal public pole, extrusion molding external sheath layer 5 is made temperature sensing cable more at last.Described electric signal changes, and is meant temperature sensing cable in the serviceability temperature scope, and the electric signal that coats NTC characteristic material interval 2 changes, and the electric signal of coated insulation material interval 3 does not change.
Whether the electric signal that electrical signal detection device 6 detects temperature sensing cable in real time changes, when temperature sensing cable is heated, coat detecting conductor 12 sections of NTC characteristic material layers since heated resistance reduce, electric signal changes relatively, according to the electric signal size preset value relative, judge output constant temperature alerting signal by electrical signal detection device 6 with temperature; Whether change in electric amount in the time of also can be according to heating rate 〉=5 ℃/min by electrical signal detection device 6 judges output differential temperature alerting signals greater than preset value; Temperature sensing cable short circuit, open circuit fault alerting signal and electrical signal detection device disconnection fault alerting signal.
The foregoing description, in a kind of cable type linear temperature-sensitive detector structure of multi-loop sectional monitoring temperature-sensing electrical signal, the detecting conductor 1 that clad is arranged can be that two cores, three cores or multicore constitute multiloop, corresponding again change terminal resistance quantity, principle is identical.
The foregoing description, in a kind of cable type linear temperature-sensitive detector structure of multi-loop sectional monitoring temperature-sensing electrical signal, NTC characteristic material layer is CTR characteristic material layer also, and principle is identical.
The foregoing description, in a kind of cable type linear temperature-sensitive detector structure of multi-loop sectional monitoring temperature-sensing electrical signal, can be parallel, stranded in conductive layer 4 inboards or the outside again, twine and increase one or more conductor, to make things convenient for connection.
The foregoing description when a kind of cable type linear temperature-sensitive detector of multi-loop sectional monitoring temperature-sensing electrical signal uses as rate-of-rise detector, can be combined into cable linear different constant temperature fire detector with any cable linear constant temperature fire detector of the prior art.
The material that clad adopted of conductor and the behavioral illustrations of coating layer material among the present invention:
1. detecting conductor (versatile material): specification is selected for use between Φ 0.01mm～2.0mm.Material can select for use metal material to make or conductive fiber, lead plastics and make.
2, NTC or CTR characteristic material layer (versatile material): select the performance of material to be; All plastics, elastomeric material with NTC or CTR characteristic coat thickness and select between 0.1mm～1.0mm.
3, extrusion molding external sheath layer (versatile material): material can be the high molecular polymer insulating material.The thickness of extrusion molding restrictive coating is selected between 0.1mm～2.0mm.
4, conductive layer (versatile material): material can be plastic-aluminum or compound copper-plastics band or metal forming, and thickness is to select for use between 0.01mm～1.0mm, and width is preferred between 2mm～20mm.
5, insulation material layer (versatile material): the performance of insulating material is that specific insulation is 10
8～10
20All plastics of Ω cm, elastomeric material, insullac material.
6, terminal resistance: terminal resistance R1, R2, R3 resistance value are chosen in 50 Ω～50M Ω scope.
Claims (5)
1. the cable type linear temperature-sensitive detector of a multi-loop sectional monitoring temperature-sensing electrical signal, be to be connected to form multiloop closed circuit signaling Acquisition Circuit with electrical signal detection device (6) and terminal resistance respectively by the temperature sensing cable two ends, it is characterized in that temperature sensing cable has three or three above detecting conductors (1) and public pole formation multiloop, outer all plastics that coat at interval respectively of detecting conductor (1) with NTC characteristic, elastomeric material interval (2), insulating material interval (3), coating has all plastics of NTC characteristic, elastomeric material interval (2), the detecting conductor (1) of insulating material interval (3) has all plastics of NTC characteristic with clad, the staggered mode of elastomeric material interval (2) is arranged, can be parallel after the arrangement, stranded, winding is set together, wrapped then conductive layer (4), conductive layer (4) is as public pole, and extrusion molding external sheath layer (5) is made temperature sensing cable more at last.
2. the cable type linear temperature-sensitive detector of a kind of multi-loop sectional monitoring temperature-sensing electrical signal according to claim 1, all plastics, elastomeric material layer that it is characterized in that having the NTC characteristic be all plastics, the elastomeric material layer of CTR characteristic also.
3. the cable type linear temperature-sensitive detector of a kind of multi-loop sectional monitoring temperature-sensing electrical signal according to claim 1, it is characterized in that can be parallel, stranded in conductive layer (4) inboard or the outside again, twine and increase one or more conductor.
4. the cable type linear temperature-sensitive detector of a kind of multi-loop sectional monitoring temperature-sensing electrical signal according to claim 1 is characterized in that the detecting conductor (1) of temperature sensing cable is two.
5. the cable type linear temperature-sensitive detector of a kind of multi-loop sectional monitoring temperature-sensing electrical signal according to claim 1, when using, can be combined into cable linear different constant temperature fire detector with any cable linear constant temperature fire detector of the prior art as rate-of-rise detector.
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| CN2008100113983A CN101290703B (en) | 2008-05-15 | 2008-05-15 | Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector |
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|---|---|---|---|
| CN2008100113983A CN101290703B (en) | 2008-05-15 | 2008-05-15 | Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector |
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| CN101290703A CN101290703A (en) | 2008-10-22 |
| CN101290703B true CN101290703B (en) | 2011-08-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163359A (en) * | 2011-04-12 | 2011-08-24 | 李萍 | Linear temperature sensor with spare loop |
| CN103198603B (en) * | 2013-03-27 | 2016-01-06 | 李萍 | A kind of temperature variation alarm line of coaxial configuration |
| CN107680316A (en) * | 2016-08-02 | 2018-02-09 | 青岛中阳消防科技股份有限公司 | A kind of more detection circuit line-type heat detectors based on series thermal-sensitive resistive element |
| CN113096350A (en) * | 2020-05-13 | 2021-07-09 | 沈阳普泰安科技有限公司 | Temperature-sensitive detector cable |
| CN113129547A (en) * | 2020-05-13 | 2021-07-16 | 沈阳普泰安科技有限公司 | Cable of linear temperature-sensing fire detector |
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Application publication date: 20081022 Assignee: Shenyang Putaian Technology Co.,Ltd. Assignor: Zhang Chen Contract record no.: 2014210000036 Denomination of invention: Multi-loop sectional monitoring temperature-sensing electrical signal cable type linear temperature-sensitive detector Granted publication date: 20110810 License type: Exclusive License Record date: 20140505 |
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Effective date of registration: 20160722 Address after: Shen Liaodong road Tiexi District of Shenyang City, Liaoning province 110022 47-2 Acer International Building A 31 floor No. -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 |