CN101017594A - Multifunctional cable linear temperature sensing fire detector - Google Patents
Multifunctional cable linear temperature sensing fire detector Download PDFInfo
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- CN101017594A CN101017594A CNA2007100104975A CN200710010497A CN101017594A CN 101017594 A CN101017594 A CN 101017594A CN A2007100104975 A CNA2007100104975 A CN A2007100104975A CN 200710010497 A CN200710010497 A CN 200710010497A CN 101017594 A CN101017594 A CN 101017594A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/005—Circuits arrangements for indicating a predetermined temperature
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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Abstract
This invention relates to one multi-function cable linear temperature fire detector, of which tow ends are connected to resistance signal process device and terminal case to form enclosed signal collection circuit to realize the temperature degrees and change rate warm system and the monitor system, and which is characterized by the following: the two spring metal conductors on cable are set with macromolecule polymer insulation materials or PTC property materials layers and NTC or CTR or semiconductor materials or insulation layers covered with two pieces of wires impacted into one layer of insulation protection cover for cable; the resistance signal process device monitors the change between the cover layers.
Description
Technical field
The present invention relates to fire alarm installation, a kind of multifunctional cable linear temperature sensing fire detector.
Technical background
Line-type heat detector of the prior art is a kind of purposes fire detector very widely, and the line-type heat detector that uses can be divided into five kinds by action principle difference at present:
First kind is on-off value linear temperature-sensitive detector, referring to Fig. 1, in this detector, an oversheath 1 is arranged, there are two (or three, four) elastic conductors 3 to twist together in this sheath, the conductor outside coats with the plastic layer 2 of certain melting point, when the detector heating temperature rises to the softening or thawing of plastics, under the elastic force effect of elastic conductor, be in contact with one another between the conductor, promptly be short-circuited, thereby reach the purpose of reporting a fire.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, therefore, very high to the detection sensitivity of protected object local overheating or fire with the length of being heated.One of shortcoming is that short-circuit condition keeps always after reporting to the police, and wants detector and works on, and must change the part that detector is heated and is short-circuited.In order to improve the line style detector sensitivity, usually that the alarm temperature setting is lower, then change more continually and decreased cable.Two of shortcoming is to have only an alarm temperature setting value, can only export a fire alarm, can not send early warning signal to incipient fire.
Second kind is the analog linear temperature-sensing detector, the construction of cable is same as described above, different is, each conductor outside uses the conductive plastics of NTC characteristic (negative temperature coefficient feature) to coat respectively, when being heated, temperature rises, and the resistance of the NTC plastics between the conductor reduces, the degree relevant with temperature (being that resistance is measurable analog quantity) that resistance reduces, analog linear constant temperature or rate-of-rise and fixed temperature detector are to measure the absolute value or the pace of change of resistance.The shortcoming of this detector is: behind the alarm temperature that detector is heated and temperature arrival is certain, detector can be reported a fire in advance, alarm temperature uses length relevant with the length of being heated with detector, the length of being heated is long more, the alarm temperature value is low more, promptly can not right judgement fire and alarm temperature, make the accuracy of this detector alarm temperature lower.Advantage: can recover, the back detector temperature of reporting to the police arrives the fire alarm temperature, but does not surpass the temperature of being burnt fully, and temperature reduces the back detector and still can work on.
The third is an air hose line style heat detector, referring to Fig. 2, in this detector, a hollow metal tube 5 is arranged.Its two ends are provided with plug 4, and the one end is provided with pressure survey interface 6.Back metal tube 5 takes place and is heated in fire, and its internal air pressure changes, and carries out fire alarm by absolute value or the variable quantity of measuring air pressure.This detector excellent, shortcoming is similar to the analog linear temperature-sensing detector.
The 4th kind of this detector is a kind of compound line-type heat detector, and structure is referring to Fig. 1.This detector is to be twisted together by two (or three or four) elastic conductors, every conductor coats identical meltable NTC plastic layer 7 outward respectively, resistance descends when detector is heated, 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 raise, after meltable NTC plastic layer softened or melts, under the elastic force effect of elastic conductor, two conductors were 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 relative merits of this detector are identical with second kind.
The 5th kind is made of an on-off value linear heat fire detector and an analog linear temperature-sensing fire detecting device, referring to Fig. 3.Outside two conductors 3, coat 7, two conductors of NTC plastic layer respectively and twist together, coat fusible plastic layer 10 respectively outside other two elastic conductors 9 and twist together.Oversheath 1 is arranged outward, and the signal input part of resistance signal measurement mechanism 8 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 7 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.
To sum up state analysis result as can be seen, switching value and compound cable linear temperature sensing fire detector are beyond retrievable, and analog quantity and air hose cable linear temperature sensing fire detector are renewable type.Above-mentioned renewable type cable linear temperature sensing fire detector in use, because of the alarm temperature of setting relevant with the length of being heated, use length and the environment temperature of heat detector, can not correctly judge actual heating temperature, therefore, the alarm temperature value of setting is inaccurate, causes wrong report easily or fails to report fire alarm.So, need to propose a kind of renewable type cable formula heat fire detector that is not used length and ambient temperature effect.
Summary of the invention
The purpose of this invention is to provide a kind of multifunctional cable linear temperature sensing fire detector, realize that multistage constant temperature is reported to the police, differential temperature is reported to the police and the real-time monitoring of temperature sensing cable environment for use temperature.
Multifunctional cable linear temperature sensing fire detector, be connected to form the closed circuit signaling Acquisition Circuit with resistance signal treating apparatus and termination box respectively by the temperature sensing cable two ends, it is characterized in that being provided with between two elastic metallic conductors of temperature sensing cable the barrier layer of two kinds of different materials, high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer and NTC or CTR high molecular polymer or semiconductor macromolecule polymer material or semiconductor tape barrier layer are arranged, have two line bodies of clad stranded or be intertwined after, after coating layer of aluminum plastic composite strip or compound copper-plastics band or metal forming or wire braid, extrusion molding or wrapped one deck oversheath are made temperature sensing cable again; Resistance signal treating apparatus monitoring temperature sensing cable is poor because of the heating rate resistance that produces between the elastic metallic conductor of the change in resistance amount that produces between two elastic metallic conductors that the different materials clad is arranged and coating NTC or CTR characteristic macromolecule polymer material and the metallized aluminum plastic composite strip layer, the alerting signal that NTC or CTR characteristic macromolecule polymer material layer are set in resistance signal treating apparatus internal memory starts the resistance amount, be from high to low and set a plurality of temperature grade alarming values and heating rate resistance difference alarming value in the resistance zone of linear change, and carry out the temperature monitoring of temperature sensing cable environment for use, realize the output of switching value constant temperature alerting signal, the output of analog quantity constant temperature alerting signal, the output of differential temperature alerting signal, the real-time monitor analogue quantity signal output of cable environment for use temperature variation.
The outstanding advantage of multifunctional cable linear temperature sensing fire detector of the present invention is to set alarm temperature not used length and environment temperature to limit, and its temperature sensing cable uses length to be more than the 5000m, and performance is constant.Temperature sensing cable is when allowing to use high ambient temperature following, the resistance signal of the temperature sensing cable that is collected is under the high resistant state of insulation all the time, when having only temperature to surpass temperature sensing cable to allow to use high ambient temperature, the resistance bust several magnitude of temperature sensing cable, on this basis, the resistance signal treating apparatus is judged output alarm signal according to the temperature change in resistance, can realize setting a plurality of temperature grades and report to the police.
The gordian technique of fire detector of the present invention is the structure of temperature sensing cable, and what it adopted is the barrier layer that is provided with two kinds of different materials between two elastic metallic conductors.Temperature sensing cable allow to use below the high ambient temperature, high molecular polymer insulating material or ptc characteristics macromolecule polymer material that elastic conductor coats can be not destroyed, the elastic metallic conductor can not expose, can not contact with the clad that coats NTC or CTR characteristic macromolecule polymer material, the resistance signal treating apparatus detects less than the change in resistance signal that coats NTC or CTR characteristic macromolecule polymer material.Therefore, temperature sensing cable is allowing to use below the high ambient temperature, and significant change can not take place the resistance between two elastic metallic conductors, is in the high resistant state of insulation all the time, so the use length of temperature sensing cable is unrestricted.When temperature sensing cable is heated and surpasses temperature sensing cable and allow to use high ambient temperature, coat the softening or fusing of identical or different fusing point high molecular polymer insulating material or ptc characteristics high molecular polymer insulating material, under the elastic force effect of elastic metallic conductor, the elastic metallic conductor of coated high molecular insulating material of polymer or ptc characteristics macromolecule polymer material exposes, and the elastic metallic conductor that exposes contacts with the clad that another root coats NTC or CTR characteristic macromolecule polymer material.NTC between two elastic metallic conductors of temperature sensing cable or CTR characteristic macromolecule polymer material are reduced to a setting value because heated resistance reduces according to resistance, output early warning, fire alarm, and the degree that resistance reduces is relevant with the temperature sensing cable heating temperature.When temperature sensing cable is heated but does not surpass the state that is burnt fully, when temperature returns to temperature sensing cable when allowing to use high ambient temperature following, NTC between two elastic metallic conductors or CTR characteristic macromolecule polymer material resistance raise, and temperature sensing cable returns to normal operating conditions again.
When replacing the clad of NTC or CTR characteristic macromolecule polymer material with semiconductor macromolecular material or semiconductor tape clad, the performance of temperature sensing cable is irrecoverable constant temperature type.
Be provided with a plurality of resistances alarm set point corresponding and the corresponding resistance difference alarming of heating rate value in the resistance signal treating apparatus with temperature, when temperature surpasses a setting value, send the constant temperature alerting signal, when the intensification digit rate surpasses a setting resistance difference, send the differential temperature alerting signal.The constant temperature alarm temperature is 60 ℃, 70 ℃, 85 ℃, 105 ℃, 138 ℃ five grades; And can between 60 ℃-138 ℃, alarm temperature be set arbitrarily.Differential temperature warning heating rate: 10 ℃/min (response in 20s～140s), 20 ℃/min (response in 22.5s～90s), 30 ℃/min (response in 15s～60s), be suitable for wider temperature range, be particularly useful for fire temperature rise ratio place faster, the thermal resistance temperature surveying lead is set in the whole piece temperature sensing cable, can monitors in real time the acquisition environment temperature.This product can be repeatedly used, and can repeat at least 50 times through test.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 on-off value linear temperature-sensitive detector structural representation of first kind of tradition;
Fig. 2 is the third an air hose line style heat detector structural representation of tradition;
Fig. 3 is the switching value one analog quantity composite line type temperature sensing fire detector synoptic diagram of the 5th kind of tradition;
Fig. 4 is multifunctional cable linear temperature sensing fire detector example 1 structural representation of the present invention;
Fig. 5 is multifunctional cable linear temperature sensing fire detector example 2 structural representations of the present invention;
Fig. 6 is multifunctional cable linear temperature sensing fire detector example 3 structural representations of the present invention;
Fig. 7 is multifunctional cable linear temperature sensing fire detector example 4 structural representations of the present invention;
Fig. 8 is multifunctional cable linear temperature sensing fire detector example 5 structural representations of the present invention;
Fig. 9 is multifunctional cable linear temperature sensing fire detector example 6 structural representations of the present invention;
Figure 10-Figure 12 is the heat fire detector example 7-9 structural representation that the present invention has subsidiary function;
Embodiment
Multifunctional cable linear temperature sensing fire detector, example 1 is seen Fig. 4: comprise that the temperature sensing cable two ends are connected with termination box with the resistance signal treating apparatus respectively, form closed circuit resistance signal Acquisition Circuit, two elastic metallic conductors 21 that it is characterized in that temperature sensing cable, by wrapped band or extrusion molding, wherein conductor 21 coated high molecular insulating material of polymer or ptc characteristics macromolecule polymer material layer 22, another root conductor 21 coats NTC or CTR characteristic macromolecule polymer material layer 23, two line bodies that the different materials clad is arranged, stranded or be intertwined, extrusion molding or wrapped one deck oversheath 24 are made recoverable constant temperature temperature sensing cable again.According to the resistance performance of different materials clad, the alerting signal that NTC or CTR characteristic macromolecule polymer material layer 23 are set in resistance signal treating apparatus internal memory starts the resistance amount.Be from high to low in the resistance territory of linear change and can set a plurality of alarming values.
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:
High molecular polymer main material: 100 parts of Corvics
20 parts of plastifier: DOP (dioctyl phthalate), 20 parts of chlorinated paraffins, 10 parts of DBP (n-butyl phthalate)
Assistant: 0.2 part of (antioxidant) bisphenol-A,
Filling agent: 10 parts of calcium bicarbonates
Stabilizing agent: 5 parts of dibasic Lead Phosphites
Above-mentioned material is made through mixing, kneading, mixing, compressing tablet, granulation.
Temperature raises, and resistivity can descend thereupon, between 25 ℃～150 ℃ (2～8 orders of magnitude descend).
(2.CTR critical value negative temperature coefficient) characteristic macromolecule polymer material:
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).
3. high molecular polymer insulating material (versatile material):
Select the performance of high molecular polymer insulation insulating material to be: specific insulation is 10
16～10
18Ω cm is between 25 ℃～85 ℃ (resistivity remains under the high-impedance state).
4. semiconductor macromolecule polymer material:
High molecular polymer main material: 100 parts of high density polyethylenes
Conductive powder body: 30 parts of conductive blacks
Antioxidant: 0.2 part of 6-tert-butyl group metacresol (antioxidant 300)
Above-mentioned material is made through mixing, kneading, mixing, compressing tablet, granulation.
Select the performance of semiconductor macromolecule polymer material to be: specific insulation is 10
9The following macromolecule polymer material of Ω cm.
5, 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 decline that can suddenly change in a specific range of temperatures is between 25 ℃～150 ℃ (2～6 orders of magnitude raise).
6, semiconductor tape material (versatile material):
It is that specific insulation is 10 that main material is selected performance
9Below the Ω cm.
Aluminium-plastic tape or compound copper-plastics band or metal foil layer or wire braid 25, can contact with NTC or CTR characteristic macromolecule polymer material layer 23 as auxiliary-conductor, the resistance signal treating apparatus can directly be gathered the elastic metallic conductor 21 that coats NTC or CTR characteristic macromolecule polymer material layer 23, and resistance signal between auxiliary-conductor aluminium-plastic tape or compound copper-plastics band or metal foil layer or the wire braid 25, owing to be heated, the elastic metallic conductor 21 of temperature sensing cable and the resistance between the auxiliary-conductor wire braid 25 descend, according to intensification digit rate and corresponding resistance decline rate, resistance signal treating apparatus output differential temperature alerting signal.Because the auxiliary-conductor clad has function of shielding concurrently, therefore, the Electromagnetic Compatibility or the antijamming capability of temperature sensing cable are enhanced.
Embodiment 7 has increased the differential temperature warning work utmost point, there is the structure of the recoverable different constant temperature temperature sensing cable of shielding action to be simultaneously, see Figure 10: outside the elastic metallic conductor 21 high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer 22 are arranged, outside another root elastic metallic conductor 21 NTC or CTR characteristic polymer material layer 23 are arranged, two line bodies that are surrounded by different materials, stranded or the back that is intertwined is along putting or twine the above environment temperature monitoring of one or a conductor 26, follow metallized aluminum plastic composite strip or compound copper-plastics band or metal forming or wire braid 25, again along putting or twine one or an above metal auxiliary-conductor 28, extrusion molding or wrapped external sheath layer 24 together then.Along put or twine one or above metal auxiliary-conductor 28 also can be aluminium-plastic tape or compound copper-plastics band or metal forming or wire braid 25 in or simultaneously in aluminium-plastic tape or compound copper-plastics band or metal forming or wire sheathing 25 with outside.Along putting or twine the above environment temperature monitoring of one or a conductor 26, also can be aluminium-plastic tape or compound copper-plastics band or metal forming or wire braid 25 outside or simultaneously in aluminium-plastic tape or compound copper-plastics band or metal forming or wire sheathing 25 with outside.Above-mentioned metal auxiliary-conductor 28 can not add yet, and makes the temperature sensing cable of subsidiary function.
Outside the above-mentioned environment temperature monitoring conductor 26 insulation course or naked layer are arranged, be connected with the resistance signal processor, carry and detect conductor resistance signal, real monitoring when the employed environment temperature of temperature sensing cable is carried out as thermal resistance temperature sensor.
Metallized aluminum plastic composite strip, compound copper-plastics band, metal forming, metal wire knitted screen layer 25 and suitable purpose of putting or twining one or one above metal auxiliary-conductor 28 are to use as the differential temperature warning work utmost point, have function of shielding simultaneously.
Metallized aluminum plastic composite strip, compound copper-plastics band, metal forming or wire braid 25 or add again twines or is in order to strengthen temperature sensing cable Electromagnetic Compatibility or antijamming capability along putting shielded conductor 28 purposes.
Insulating bag belt 27, aluminium-plastic tape, compound copper-plastics band, metal forming or wire braid 25 equally can be respectively or are added in simultaneously in all structures of routine 1-example 6, and clad 27 can exchange with clad 25 positions.
In above-mentioned example 8, the example 9 one or an above environment temperature monitoring conductor 26 also can be arbitrarily along putting or twining in 24,25,27 layers; One or above shielded conductor 28 also can be outside aluminium-plastic tape or compound copper-plastics band or metal forming or metal wire knitted belting layer 25 or the inside and outside while along putting or twining, perhaps metallic shield conductor 28 can not add yet.
The above environment temperature monitoring conductor 26 of one or one and shielded conductor 28 can be distinguished equally or simultaneously by the mode of example 8, example 9, along being added in all structures of routine 1-example 7 with putting or twine.
Embodiment 11 expendable constant temperatures, can to recover different constant temperature temperature sensing cable structure identical with above-mentioned example 6 structures, referring to Fig. 9: just will be wherein NTC or CTR characteristic macromolecule polymer material in elastic metallic conductor 21 that coats NTC or CTR characteristic macromolecule polymer material clad 23 and ptc characteristics macromolecule polymer material or high molecular polymer insulating material clad 22 successively replace with semiconductor layer macromolecule polymer material layer or semiconductor tape clad 23 '.
Above-mentioned temperature sensing cable material therefor all is this area versatile materials:
1, conductor: the elastic metallic conductor, the 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.
Twine or suitable auxiliary-conductor, screen conductor, the environment temperature monitoring conductor put, adopt metal wire rod, the line footpath is selected for use between 0.01～3.0mm.Can be copper conductor, copper cladding aluminum conductor, iron wire, steel wire, nickel wire, platinum line, stainless steel wire.The conductor skin can be zinc-plated, zinc-plated, copper facing, silver-plated, chromium plating, nickel plating.
Environment temperature monitoring metallic conductor: on the basis of the above, skin also can coat one deck insulating material.
2, NTC or CTR negative temperature coefficient macromolecule polymer material or semiconductor 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. also can be by mixing plastifier (known 225 kinds of plastifier), one or more are after mixing, and hot melt, mixing, compressing tablet, granulation are made.
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 product performance 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 product performance, and is not essential, the amount doesn't matter.
But wherein 1. 2. 3. one of them, also can several or whole addings.
3, PTC (positive temperature coefficient (PTC)) characteristic macromolecule polymer material is to be base material with high molecular polymer (tygon, polypropylene, ethylene-vinyl acetate copolymer, natural rubber, polyvinylidene fluoride etc.), by mixing:
1. also may cross and mix conductive powder body: 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, carbon black, in one or more, hot melt, mixing, compressing tablet, granulation are made after mixing.
2. assistant: antioxidant, thermal stabilizer, light stabilizer, fire retardant, reinforcing agent, colorant, lubricant, antifoggant, aging resister, antistatic agent, anti-termite agent, Ratproof agent, promoter, softening agent, do not influence product performance after the interpolation, not essential, the amount doesn't matter.
3. fill, 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 product performance, and is not essential, the amount doesn't matter.
But wherein 1. 2. 3. one of them, also can several or whole addings.
4, insulating coating: material can be Polyvinylchloride, tygon, fluoroplastic, Maranyl, polyamine fat plastics, polypropylene, polystyrene, haloflex, ethylene-vinyl acetate copolymer.
Extrusion molding or wrapped 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.
5, semiconductor tape:
Material can be: semiconductor tape made of paper, glass fibre semiconductor tape, synthon semiconductor tape, natural fiber semiconductor tape.
6, thickness:
The thickness of extrusion molding or wrapped external sheath layer is selected between 0.1～2.0mm.
The band thickness of insulating coating can be selected for use between 0.01～1.0mm, wide can selecting for use between 5～40mm.
The thickness of aluminium-plastic tape or compound copper-plastics band or metal forming can be selected for use between 0.01～1.0mm.
NTC or CTR negative temperature coefficient macromolecule polymer material or semiconductor macromolecule polymer material clad coat thickness and select between 0.05～2.0mm.
High molecular polymer or PTC macromolecule polymer material coating thickness are selected between 0.05～2.0mm.
Semiconductor tape thickness is selected between 0.01～2.0mm, and width is selected for use between 5～30mm.
Claims (10)
1, multifunctional cable linear temperature sensing fire detector, be connected to form the closed circuit signaling Acquisition Circuit with resistance signal treating apparatus and termination box respectively by the temperature sensing cable two ends, it is characterized in that being provided with between two elastic metallic conductors of temperature sensing cable the barrier layer of two kinds of different materials, high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer and NTC or CTR or semiconductor macromolecule polymer material or semiconductor tape barrier layer are arranged, have two line bodies of clad stranded or be intertwined after, after coating layer of aluminum plastic composite strip or compound copper-plastics band or metal forming or wire braid, extrusion molding or wrapped one deck oversheath are made temperature sensing cable again; Resistance signal treating apparatus monitoring temperature sensing cable is poor because of the heating rate resistance that produces between the elastic metallic conductor of the change in resistance amount that produces between two elastic metallic conductors that the different materials clad is arranged and coating NTC or CTR characteristic macromolecule polymer material and the metallized aluminum plastic composite strip layer, the alerting signal that NTC or CTR characteristic macromolecule polymer material layer are set in resistance signal treating apparatus internal memory starts the resistance amount, be from high to low and set a plurality of temperature grade alarming values and heating rate alarming value in the resistance zone of linear change, and carry out the temperature monitoring of temperature sensing cable environment for use, realize the output of switching value constant temperature alerting signal, the output of analog quantity constant temperature alerting signal, the output of differential temperature alerting signal, the real-time monitor analogue quantity signal output of cable environment for use temperature variation.
2, multifunctional cable linear temperature sensing fire detector according to claim 1, its characteristic is that (1) recoverable temperature sensing cable structure is: two elastic metallic conductors wherein one coat NTC or CTR characteristic macromolecule polymer material layer (23), another root coated high molecular insulating material of polymer or ptc characteristics macromolecule polymer material layer (22), two line bodies that the different materials clad arranged are stranded or be intertwined, at extrusion molding or wrapped one deck oversheath (24); (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
3, multifunctional cable linear temperature sensing fire detector according to claim 1, it is characterized in that (1) recoverable constant temperature temperature sensing cable structure is: two elastic metallic conductors (21), wherein a coated high molecular insulating material of polymer or a ptc characteristics macromolecule polymer material layer (22) or coat NTC successively or CTR characteristic macromolecule polymer material layer (23) and high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer (22), another root coats NTC or CTR characteristic macromolecule polymer material layer (23) and high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer (22), two line bodies that clad is arranged, stranded or be intertwined, at extrusion molding or wrapped one deck oversheath (24); (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
4, multifunctional cable linear temperature sensing fire detector according to claim 1, the structure that it is characterized in that (1) recoverable constant temperature temperature sensing cable is: two elastic metallic conductors (21) coat NTC or CTR characteristic macromolecule polymer material layer (23) respectively, coat one deck high molecular polymer insulating material or ptc characteristics macromolecule polymer material layer (22) then respectively, two more respectively or only wherein one coat layer of aluminum plastic composite strip or compound copper-plastics band or metal foil layer (25), two line bodies that identical or different clad is arranged, stranded or be intertwined, at extrusion molding or wrapped one deck oversheath (24); (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
5, multifunctional cable linear temperature sensing fire detector according to claim 1, it is characterized in that (1) recoverable different constant temperature temperature sensing cable structure can also be: an elastic metallic conductor (21) coats NTC or CTR characteristic macromolecule polymer material layer (23), another root conductor (21) coated high molecular insulating material of polymer or ptc characteristics macromolecule polymer material layer (22), two line bodies that identical clad is arranged, stranded or be intertwined, at metallized aluminum plastic composite strip or compound copper-plastics band or metal forming or wire braid (25), extrusion molding or wrapped oversheath (24) are arranged outward; (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
6, multifunctional cable linear temperature sensing fire detector according to claim 1, it is characterized in that (1) recoverable different constant temperature temperature sensing cable structure can also be: an elastic metallic conductor (21) coats NTC or CTR characteristic macromolecule polymer material layer (23), metallized aluminum plastic composite strip or compound copper-plastics band or metal foil layer (25) again, another root elastic metallic conductor (21) coats one deck NTC or CTR characteristic macromolecule polymer material layer (23) again, coat one deck high molecular polymer insulation material layer or ptc characteristics macromolecule polymer material layer (22) again, two line bodies that clad inequality is arranged, stranded or be intertwined, extrusion molding or wrapped oversheath (24) are arranged outward; (2) irrecoverable constant temperature, can recover the temperature sensing cable structure of differential temperature: just NTC or CTR characteristic macromolecule polymer material layer (23) in the line body that coats NTC or CTR characteristic macromolecule polymer material layer (23) and high molecular polymer insulation material layer or ptc characteristics macromolecule polymer material layer (22) are successively replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
7, multifunctional cable linear temperature sensing fire detector according to claim 1, the different constant temperature temperature sensing cable that it is characterized in that (1) recoverable increase differential temperature warning work utmost point auxiliary-conductor and temperature sensing cable environment temperature monitoring conductor, its structure is: high molecular polymer insulating material clad (22) is arranged outside the elastic metallic conductor (21), CTR or NTC characteristic macromolecule polymer material clad (23) are arranged outside another root elastic metallic conductor (21), stranded or winding is back along putting or twine one or an above environment temperature monitoring conductor (26), follow metallized aluminum plastic composite strip or compound copper-plastics band or metal forming or metal wire knitted clad (25), can be again along putting or twine one or an above metal auxiliary-conductor (28), extrusion molding or wrapped external sheath layer (24) together then; One or an above metal auxiliary-conductor (28) can be in aluminium-plastic tape or compound copper-plastics band or metal forming or metal wire knitted clads (25) or are interior and outer simultaneously along putting or twining; The above environment temperature monitoring conductor of one or one (26) was suitablely put or is twined in aluminium-plastic tape or compound copper-plastics band or metal forming or outer or interior and outer while of metal knitted silk clad (25); (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
8, multifunctional cable linear temperature sensing fire detector according to claim 1, it is characterized in that (1) has the structure of the recoverable constant temperature temperature sensing cable of function of shielding to be: ptc characteristics high molecular polymer insulating material or high molecular polymer insulating material clad (22) are arranged outside the elastic metallic conductor (21), NTC or CTR characteristic macromolecule polymer material clad (23) are arranged outside another root elastic metallic conductor (21), be ptc characteristics macromolecule polymer material or high molecular polymer insulating material clad (22) then, strand to after insulating bag belt (27) is arranged, then also can be along putting or twine one or above environment temperature monitoring lead (26) and metal auxiliary-conductor (28), coat plastic-aluminum or compound copper-plastics band layer or metal wire knitted clad (25) again, outermost layer is extrusion molding or wrapped external sheath layer (24); (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material layer (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
9, multifunctional cable linear temperature sensing fire detector according to claim 1, it is characterized in that (1) has the structure of the recoverable constant temperature temperature sensing cable of shielding and temperature sensing cable environment for use temperature-monitoring function to be, the outside has NTC or CTR characteristic macromolecule polymer material or semiconductor material clad (23) successively, one or an above leading body (21) of ptc characteristics high molecular polymer insulating material or high molecular polymer insulating material clad (22), strand is to back suitable put or twine one or an above environment temperature monitoring lead (26), insulating bag belt (27) is then arranged, then along putting or twine one or an above metal auxiliary-conductor (28), coat plastic-aluminum or compound copper-plastics band layer or metal wire knitted clad (25) again, again along putting or twine one or an above environment temperature monitoring lead (26), be coated with insulating bag belt (27) again, outermost layer is the fire-retardant external sheath layer (24) of extrusion molding; (2) expendable constant temperature temperature sensing cable structure: just NTC or CTR characteristic macromolecule polymer material or semiconductor material clad (23) are replaced with semiconductor macromolecule polymer material or semiconductor tape clad (23 '), all the other are identical with (1).
10, multifunctional cable linear temperature sensing fire detector according to claim 1 is characterized in that recovering, in the irrecoverable temperature sensing cable structure:
(1) insulating coating (27), aluminium-plastic tape, compound copper-plastics band, metal forming or wire braid (25) are can be at the same time or separately external at NTC or CTR characteristic macromolecule polymer material or semiconductor material clad (23) or ptc characteristics high molecular polymer insulating material or high molecular polymer insulating material clad (22) twisted wire, adjacent coating in the oversheath (24), clad (27) can exchange with clad (25) position;
The above environment temperature monitoring lead of (2) one or one (26) also can be at the same time or separately in external sheath layer (24), plastic-aluminum or compound copper-plastics band layer or metal wire knitted clad (25), insulating bag belt (27) along putting or twine combination, one or an above metal auxiliary-conductor (28) can plastic-aluminum or copper mould in the belting layer (25) and/or outside suitablely put or twine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104975A CN101017594A (en) | 2007-02-27 | 2007-02-27 | Multifunctional cable linear temperature sensing fire detector |
| PCT/CN2007/000758 WO2008104105A1 (en) | 2007-02-27 | 2007-03-09 | A multifunctional linear cable temperature-sensing fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100104975A CN101017594A (en) | 2007-02-27 | 2007-02-27 | Multifunctional cable linear temperature sensing fire detector |
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| Publication Number | Publication Date |
|---|---|
| CN101017594A true CN101017594A (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100104975A Pending CN101017594A (en) | 2007-02-27 | 2007-02-27 | Multifunctional cable linear temperature sensing fire detector |
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| Country | Link |
|---|---|
| CN (1) | CN101017594A (en) |
| WO (1) | WO2008104105A1 (en) |
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