CN101059377A - Three-core structure switch, analog composite type linetype temperature inductor - Google Patents
Three-core structure switch, analog composite type linetype temperature inductor Download PDFInfo
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- CN101059377A CN101059377A CN 200710107680 CN200710107680A CN101059377A CN 101059377 A CN101059377 A CN 101059377A CN 200710107680 CN200710107680 CN 200710107680 CN 200710107680 A CN200710107680 A CN 200710107680A CN 101059377 A CN101059377 A CN 101059377A
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Abstract
The invention relates to an on-off value and analog quantity composite linear temperature detector with three-core structure, wherein two ends of a temperature-sensitive cable are respectively connected with a microcomputer modulator (7) and three terminal resistances (R1, R2, R3) to form closed-circuit signal pick-up circuit. The invention is characterized in the structure of the temperature-sensitive cable that two elastic metal conductors (1) are respectively coated by an insulated layer (2) which soften point is 40-180Deg. C, wherein one conductor is also coated by a plastic-aluminum composite band, a plastic-copper composite band, or a metal foil layer (5), a conductor (3) is coated by a semi-conductive layer (4), three cores with coats are twisted together, while the twist distance is 20-200mm as best, to extrude an outer sleeve layer (6). The inventive product has high quality reliability, low cost, high temperature alarm sensitivity, to meet the demands of GB16280-2005 (linear temperature sensitive detector) and relative supplementary items.
Description
Technical field
The present invention relates to fire alarm installation, a kind of switching value of three-core structure, analog composite type line-type heat detector.
Technical background
Line-type heat detector of the prior art is a not fire detector widely of a kind of purposes, the present line-type heat detector that uses: constitute the quadrature arrangement heat detector by an on-off value linear heat fire detector and an analog linear temperature-sensing fire detecting device, referring to Fig. 1.Outside two conductors 11, coat 9, two conductors of NTC plastic layer respectively and twist together, coat fusible plastic layer 10 respectively outside other two elastic conductors 12 and twist together.Oversheath 14 is arranged outward, and the signal input part of resistance signal measurement mechanism 13 is connected with described conductor, be used to measure between described two conductors and two elastic conductors between resistance and short-circuit conditions.When detector cables 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 export fire alarm for the first time; Then, when temperature reached higher degree, the meltable plastic layer took place softening or melts, and under the elastic force effect of elastic conductor, two conductors are in contact with one another, and the resistance signal that promptly is short-circuited, measurement mechanism will produce and export fire alarm for the second time.The advantage of this detector is: can export fire alarm twice.The shortcoming of this detector is: the alarm temperature that analog signals is provided with is relevant with environment temperature with use length, can not right judgement fire alarm temperature, and make the accuracy of this detector alarm temperature lower.
Summary of the invention
The switching value, the analog composite type line-type heat detector that the purpose of this invention is to provide a kind of three-core structure realize that the switching value constant temperature is reported to the police, the function of the multistage warning of analog quantity temperature-sensitive.
A kind of switching value of three-core structure, analog composite type line-type heat detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator and terminal resistance R1, R2, R3 respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: two elastic metallic conductors are arranged, wherein a coated with conductive material layer, coated insulation layer again; Another root coated insulation layer, metallized aluminum plastic composite strip or compound copper-plastics band or metal foil layer again; The 3rd conductor coats semiconductor layer outward; Three have the core of clad to twist together, then extrusion molding external sheath layer together.Described any elastic metallic conductor thread core all can be used as public pole.Microcomputer modulator monitoring temperature sensing cable is because of reaching the change in resistance amount that produces between elastic metallic conductor and the conventional conductor between the elastic metallic conductor that similar and different insulating material clad is arranged, the alerting signal that insulation course and semiconductor material layer are set in the microcomputer modulator internal memory starts the resistance amount, be from high to low and set a plurality of temperature grade alarming values in the resistance zone of linear change or nonlinearities change, realize the output of analog quantity constant temperature alerting signal, and, realize the output of switching value constant temperature alerting signal when between two elastic conductors during short circuit.
The gordian technique of heat detector of the present invention is the structure of temperature sensing cable, the present invention is a kind of switching value, analog composite type line-type heat detector of three-core structure, realize that outstanding advantage is because the designed construction of cable could realize that switching value signal output alarm and analog signals output alarm perfectly are combined in the tiny cable, and do not used length restriction, simultaneously because switching value and the output of analog quantity alerting signal make line-type heat detector have higher security and reliability.Still can keep the cross-section of cable less although increased aluminium-plastic tape, compound copper-plastics band or metal forming clad in the temperature sensing cable, and to the high metal material layer of conductor cladding coefficient of heat conductivity, the temperature sensing cable external and internal compositions is heated simultaneously, and with heat rapidly conduction reach the alarm temperature value that sets, the fire response time is reported to the police more than 5 seconds at least in advance than prior art, for the incipient fire forecast gains time.
The constant temperature alarm temperature can be set at 60 ℃, 70 ℃, 85 ℃, 105 ℃, 138 ℃, 180 ℃ one or both alarm temperatures in six temperature grades; The analog quantity temperature-sensitive is reported to the police can be provided with alarm temperature arbitrarily between 60 ℃-138 ℃, be suitable for wider temperature range.The product quality reliability height, cost is low, and temperature-sensitive warning sensitivity height can satisfy the performance requirement of GB16280-2005 " line-type heat detector " and supplementary provision.
Description of drawings
Fig. 1 is the switching value/analog quantity composite line type temperature sensing fire detector synoptic diagram of traditional quadrature arrangement;
Fig. 2, Fig. 4 are switching value, the analog composite type line-type heat detector cross-sectional view of a kind of three-core structure of the present invention;
Fig. 3, Fig. 5 are switching value, the analog composite type line-type heat detector structural representations of a kind of three-core structure of the present invention;
Embodiment
A kind of switching value of three-core structure, analog composite type line-type heat detector, example 1 is seen Fig. 2, Fig. 3, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 7 and terminal resistance R1, R2, R3 respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: its adopts is that the outer Vicat softening point that coats respectively of two elastic metallic conductors 1 is 40 ℃～180 ℃ a insulation material layer 2, wherein elastic metallic conductor 1 outer metallized aluminum plastic composite strip or a compound copper-plastics band or a metal foil layer 5 again; The conductor 3 outer semiconductor layers 4 that coat.Three have the core of similar and different clad to twist together, and its twisting pitch is preferred between 20mm～200mm, then extrusion molding external sheath layer 6 together.
Aluminium-plastic tape or compound copper-plastics band or metal foil layer 5 are interrupted the coating, and wherein the longitudinal pitch of metal level disconnection is preferred between 0.2mm-500mm, and every section coated length is less than 2000mm.Semiconductor layer 4 is by at least a making in described NTC or the CTR characteristic macromolecule polymer material.The coating thickness of insulation material layer 2 and semiconductor layer 4, external sheath layer 6 is selected between 0.01mm～2.0mm.
Terminal resistance R1, R2, R3 resistance value are preferred at 50 Ω～50M Ω.Terminal resistance R1, R2 and terminal resistance R3 can exist simultaneously, also can have only R3, or have only R1 and R2.
When temperature sensing cable when allowing to use high ambient temperature following, between two elastic metallic conductors 1, resistance between elastic metallic conductor 1 and the conductor 3 is in high-impedance state all the time, microcomputer modulator 7 detects less than the change in resistance between three conductors, when temperature sensing cable is heated, and when surpassing the Vicat softening point of insulation material layer 2 between two elastic metallic conductors 1, under the elastic force effect, be short-circuited by aluminium-plastic tape or compound copper-plastics band or metal foil layer 5 between two elastic metallic conductors 1, by microcomputer modulator 7 output switching value alerting signals, when elastic metallic conductor 1 conducting aluminium-plastic tape or compound copper-plastics band or metal foil layer 5 again with semiconductor layer 4 conductings, by the change in resistance of the semiconductor layer 4 between microcomputer modulator 7 judgement elastic metallic conductors 1 and the conductor 3, output analog quantity alerting signal.
The switching value of 2 one kinds of three-core structures of embodiment, analog composite type line-type heat detector, see Fig. 4 and Fig. 5, the temperature sensing cable two ends are connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator 7 and terminal resistance R1, R2, R3 respectively, the structure that it is characterized in that temperature sensing cable: two elastic metallic conductors 1, coated with conductive material layer 8 wherein coats Vicat softening point and is 40 ℃～180 ℃ insulation course 2 again; Another root coating Vicat softening point is 40 ℃～180 ℃ insulation course 2, metallized aluminum plastic composite strip or compound copper-plastics band or metal foil layer 5 again; The conductor 3 outer semiconductor layers 4 that coat; Three cores by similar and different clad twist together, and its twisting pitch is preferred between 20mm～200mm, then extrusion molding external sheath layer 6 together.
Aluminium-plastic tape or compound copper-plastics band or metal foil layer 5 are that interrupted conducting coats, and it is preferred between 0.2mm-500mm to disconnect fore-and-aft distance, and every section coated length of metal level is less than 2000mm.
Terminal resistance R1, R2, R3 resistance value are preferred at 50 Ω～50M Ω.Terminal resistance R1, R2 and terminal resistance R3 can exist simultaneously, also can have only R3, or have only R1 and R2.
The material that conductor clad of the present invention is adopted and the behavioral illustrations and the proportioning of coating layer material:
(1.NTC negative temperature coefficient) characteristic macromolecule polymer material: be with high molecular polymer (macromolecular materials such as nitrile rubber, fluororubber, EP rubbers, styrene-butadiene rubber, neoprene, silicon rubber, Corvic, tygon, fluoroplastic, polypropylene, Maranyl, polystyrene, chlorinated polyether, polyamide, haloflex, chlorosulfonated polyethylene one of them) be base material by mixing:
(2.CTR critical value negative temperature coefficient) characteristic macromolecule polymer material: be with high molecular polymer (macromolecular materials such as nitrile rubber, fluororubber, EP rubbers, styrene-butadiene rubber, neoprene, silicon rubber, Corvic, tygon, fluoroplastic, polypropylene, Maranyl, polystyrene, chlorinated polyether, polyamide, haloflex, chlorosulfonated polyethylene one of them) be base material by mixing:
1. conducting polymer composite: one or more in polyacetylene, polyaniline, polythiophene, the poly-phthalein mountain valley with clumps of trees and bamboo, polyethylene oxide, the quaternary ammonium salt ionic antistatic agent, after mixing, hot melt, mixing, compressing tablet, granulation are made.
2. also may cross and mix conductive powder body: one or more in conductor zinc paste, conductive titanium oxide, electric conductive oxidation vanadium, conductive tin oxide, electric conductive oxidation lead, conduction silicon dioxide, copper powder, aluminium powder, iron powder, silver powder, glass putty, nickel powder, conductive black, the carbon black, hot melt, mixing, compressing tablet, granulation are made after mixing.
3. mix plastifier (known 225 kinds of plastifier), one or more.
4. assistant: one or more in antioxidant, thermal stabilizer, light stabilizer, fire retardant, reinforcing agent, colorant, lubricant, antifoggant, aging resister, antistatic agent, anti-termite agent, Ratproof agent, promoter, the softening agent, do not influence the main material characteristic after the interpolation, not essential, the amount doesn't matter.
5. filling agent, reinforcing agent: calcinated argil, calcium bicarbonate, talcum powder, titanium dioxide, red mud, flyash, glass fibre, zinc paste, magnesium oxide, china clay in powder, filling agent plays incremental contribution, does not influence the main material characteristic, and is not essential, the amount doesn't matter.
Product technology performance requirement and industry technology standard, above-mentioned 1. 2. a kind of in 3. of optional usefulness also can several or whole addings.
The technical feature of product of the present invention requires to use between 25 ℃～150 ℃, when temperature raises, and resistivity 2～8 orders of magnitude that can thereupon descend.
The component proportioning of above-mentioned clad composition:
High molecular polymer main material: 100 parts of Corvics
50 parts of plastifier: DBP (n-butyl phthalate)
Assistant: 0.1 part of (antioxidant) 2246-S (claiming 4-methyl-6-tert butyl phenol again)
Filling agent: 5 parts of calcium bicarbonates
Stabilizing agent: 5 parts of dibasic Lead Phosphites
Conductive powder body: 20 parts of conductive zinc oxides
Conducting polymer composite: 1 part of polyethylene oxide
Above-mentioned material is made through mixing, kneading, mixing, compressing tablet, granulation.
Temperature raises, and the resistivity decline that can suddenly change in a specific range of temperatures is between 25 ℃～150 ℃ (2～8 orders of magnitude descend).Coating thickness selects between 0.01～2.0mm.
3. insulating material (versatile material):
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.
4, PTC (positive temperature coefficient (PTC)) characteristic macromolecule polymer material:
50 parts of high molecular polymer main material: PVDF (polyvinylidene fluoride)
50 parts of HDPF (high density polyethylene)
Conductive powder body: 11 parts of acetylene carbon blacks
Above-mentioned material is made through mixing, kneading, mixing, compressing tablet, granulation.
Temperature raises, and the resistivity rising that can suddenly change in a specific range of temperatures is between 25 ℃～150 ℃ (2～6 orders of magnitude raise).
5, plastic-aluminum or compound copper-plastics band or metal forming
The thickness of aluminium-plastic tape or compound copper-plastics band or metal forming can be selected for use between 0.01～1.0mm.Plastic-aluminum or compound copper-plastics band or metal forming width are preferred between 5mm-20mm.The cross section structure of plastic-aluminum/compound copper-plastics band is: upper and lower layer is a metal level, and the centre is a plastic layer.The used composite band of interrupted coating is that the metal level of upper and lower layer disconnects simultaneously, and the metal level interruption intervals distance of composite band and metallic foil is preferred between 0.2mm-500mm, and metal level and metal forming survival length are not less than 2100mm on the composite band.As the production line operation product, metal forming can be a carrier with heat sealable lid film, to guarantee the coating spacing equalization of metal forming.Also can be otherwise, principle is to guarantee that the metal forming open gap is even, the unlikely resistance value that influences temperature sensing cable of carrier film.
6, elastic metallic conductor: specification is selected for use between Φ 0.2～3.0mm.
Material can be selected the alloy material of steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel wire 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 lead.
7, conductor: material is all conductive wires, and specification is selected for use between Φ 0.2～3.0mm.
8, conductive material: specific volume resistance is 10
-2～10
9All plastics, rubber, lacquer, stupalith or above-mentionedly have NTC characteristic or a CTR characteristic material.
9, extrusion molding 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.
Claims (7)
1, a kind of switching value of three-core structure, analog composite type line-type heat detector, be connected to form the closed circuit signaling Acquisition Circuit with microcomputer modulator (7) and terminal resistance (R1), (R2), (R3) respectively by the temperature sensing cable two ends, the structure that it is characterized in that temperature sensing cable: two elastic metallic conductors (1) are outer, and to coat Vicat softening point respectively be 40 ℃～180 ℃ insulation course (2), wherein metallized aluminum plastic composite strip or compound copper-plastics band or a metal foil layer (5) more outward; The outer semiconductor layer (4) that coats of conductor (3); Have the core of three clads to twist together, its twisting pitch is preferred between 20mm～200mm, then extrusion molding external sheath layer (6) together.
2, the switching value of a kind of three-core structure according to claim 1, analog composite type line-type heat detector, aluminium-plastic tape or compound copper-plastics band or metal foil layer (5) are interrupted the coating, and it is preferred between 0.2mm-500mm to disconnect fore-and-aft distance; The survival coated length of every section metal level is less than 2000mm.
3, the switching value of a kind of three-core structure according to claim 1, analog composite type line-type heat detector, elastic metallic conductor (1): specification is selected for use between Φ 0.2～3.0mm; Conductor (3): specification is selected for use between Φ 0.2～3.0mm.
4, the switching value of a kind of three-core structure according to claim 1, analog composite type line-type heat detector, terminal resistance (R1), (R2), (R3) resistance value are preferred at 50 Ω～50M Ω; Terminal resistance (R1), (R2) and terminal resistance (R3) can exist simultaneously, or have only (R3), or have only (R1) and (R2).
5, the switching value of a kind of three-core structure according to claim 1, analog composite type line-type heat detector, it is characterized in that having certain intensity and flexible conductor after elastic metallic conductor (1) material can select for use following one or both to be subjected to stretch, to extend: the alloy material of steel wire, copper cash, iron wire, nickel wire, platinum line, stainless steel wire and above-mentioned material, perhaps zinc-plated, zinc-plated, the copper facing of wire external layer, silver-plated, chromium plating, nickel plating; Conductor (3) material is a kind of in all conductive wires; Semiconductor layer (4) is by at least a making in described NTC or the CTR characteristic macromolecule polymer material; Used plastic-aluminum/the compound copper-plastics band (5) of interrupted coating disconnects simultaneously for upper and lower metal level, and intermediate plastic layer is continuous, and metal forming is carrier with the heat sealable lid film; The interruption intervals distance of metal level and metal forming is preferred between 0.2mm-500mm, the survival length 2100mm of metal level and metal forming.
6, the switching value of another kind of three-core structure, analog composite type line-type heat detector, two elastic metallic conductors (1) and a conductor (3) are arranged, it is characterized in that a wherein elastic metallic conductor (1) coated with conductive material layer (8), coat Vicat softening point again and be 40 ℃～180 ℃ insulation course (2), the outer coating of another root elastic metallic conductor (1) Vicat softening point is 40 ℃～180 ℃ insulation course (2), metallized aluminum plastic composite strip or compound copper-plastics band or metal foil layer (5) again; The outer semiconductor layer (4) that coats of conductor (3); Extrusion molding external sheath layer (6) together then.
7, the switching value of a kind of three-core structure according to claim 1, analog composite type line-type heat detector, its specific volume resistance of conductive material that it is characterized in that conductive material layer (8) is 10
-2～10
9All plastics, rubber, lacquer, stupalith or above-mentioned material with NTC characteristic or CTR characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710107680 CN101059377A (en) | 2007-04-29 | 2007-05-25 | Three-core structure switch, analog composite type linetype temperature inductor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710011174 | 2007-04-29 | ||
| CN200710011174.8 | 2007-04-29 | ||
| CN 200710107680 CN101059377A (en) | 2007-04-29 | 2007-05-25 | Three-core structure switch, analog composite type linetype temperature inductor |
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| CN101059377A true CN101059377A (en) | 2007-10-24 |
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| CN 200710107680 Pending CN101059377A (en) | 2007-04-29 | 2007-05-25 | Three-core structure switch, analog composite type linetype temperature inductor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354429A (en) * | 2011-09-22 | 2012-02-15 | 无锡圣敏传感科技有限公司 | Multivariate combined-type linear temperature-sensing fire detector and implementation method thereof |
| CN107412976A (en) * | 2017-06-14 | 2017-12-01 | 桂林师范高等专科学校 | A kind of vehicle automatic fire extinguishing system |
| CN109916523A (en) * | 2019-02-27 | 2019-06-21 | 南京乾鑫电器设备有限公司 | A kind of switchgear cable vault heating accident monitors system and method |
| CN115331902A (en) * | 2022-05-26 | 2022-11-11 | 昆山聚达电子有限公司 | PTC thermistor element processing technology |
-
2007
- 2007-05-25 CN CN 200710107680 patent/CN101059377A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354429A (en) * | 2011-09-22 | 2012-02-15 | 无锡圣敏传感科技有限公司 | Multivariate combined-type linear temperature-sensing fire detector and implementation method thereof |
| CN102354429B (en) * | 2011-09-22 | 2015-09-16 | 无锡圣敏传感科技有限公司 | Multivariate combined-type linear temperature-sensing fire detector and implementation method |
| CN107412976A (en) * | 2017-06-14 | 2017-12-01 | 桂林师范高等专科学校 | A kind of vehicle automatic fire extinguishing system |
| CN109916523A (en) * | 2019-02-27 | 2019-06-21 | 南京乾鑫电器设备有限公司 | A kind of switchgear cable vault heating accident monitors system and method |
| CN115331902A (en) * | 2022-05-26 | 2022-11-11 | 昆山聚达电子有限公司 | PTC thermistor element processing technology |
| CN115331902B (en) * | 2022-05-26 | 2024-04-02 | 昆山聚达电子有限公司 | PTC thermistor element processing technology |
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Open date: 20071024 |