CN104112516A - Low temperature difference triggering type temperature sensing cable - Google Patents
Low temperature difference triggering type temperature sensing cable Download PDFInfo
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- CN104112516A CN104112516A CN201410307675.0A CN201410307675A CN104112516A CN 104112516 A CN104112516 A CN 104112516A CN 201410307675 A CN201410307675 A CN 201410307675A CN 104112516 A CN104112516 A CN 104112516A
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Abstract
The invention discloses a low temperature difference triggering type temperature sensing cable, including conductors, insulating layers, an isolating layer and an outer sheath. The conductors are wrapped by the insulating layers to form cable cores, and two or more than two cable cores are wrapped to be a whole by the isolating layer; the outer sheath is arranged outside the isolating layer; and the insulating layers are irradiation crosslinked hot melt insulating layers whose operating temperature is 160 DEG C and non-operating temperature is 120 DEG C or lower. The temperature difference between the operating temperature and the non-operating temperature of the temperature sensing cable is small, alarm triggering sensitivity is relatively high, and the low temperature difference triggering type temperature sensing cable can be widely applied to temperature alarm control of engine cabins of an automobile, a locomotive and the like, once abnormal high temperature of an engine cabin occurs, a short circuit state of the temperature sensing cable is formed and thereby triggering work of terminal alarm equipment, completing temperature cooling and extinguishment work, effectively reducing and preventing spreading of a fire, and prolonging escape time. The cable product has oil resistance, after the cable is immersed in 0# diesel or 92# gasoline or 95# gasoline for 48 hours, the surface of the sheath does not crack or swell, and thus the cable has very good practicability.
Description
Technical field
The invention belongs to temperature sensing cable technical field, be specifically related to a kind of Low Temperature Difference trigger-type temperature sensing cable.
Background technology
Temperature sensing cable; have another name called line-type heat detector; temperature sensing cable has along the ability of the long continuous monitoring and protecting object temperature in all fronts; can be used for the places such as power station, transformer station, conduit line, tunnel, interlayer, conveyer belt; temperature sensing cable detector is reliable and stable, is applicable to the fire detection of adverse circumstances.Generally, temperature sensing cable inside is two elastic wires, every steel wire outside is all surrounded by the material of one deck temperature-sensitive and insulation, under normal monitoring state, two steel wires are all in state of insulation, in the time that predetermined action temperature is arrived in surrounding enviroment temperature rise, temperature-sensitive material will break, two steel wires can produce short circuit, and input module produces and reports to the police immediately after being checked through short-circuit signal, belongs to " switching value " temperature sensing cable.But, along with the expansion of temperature sensing cable application, the technical requirement of temperature sensing cable is also constantly deepened in industry, nowadays there is again " analog quantity temp.-determined type " and " " temperature sensing cable, its core number also becomes four-core from two traditional cores to analog quantity different constant temperature formula.Four-core analog quantity temp.-determined type temperature sensing cable, is made up of four cores, and when variations in temperature, between quad, resistance changes, and in the time that resistance variations reaches the alarming threshold value of setting, detector sends fire alarm signal.Four-core analog quantity different constant temperature formula temperature sensing cable, is made up of four cores, and when variations in temperature, between quad, resistance changes, and in the time that resistance variations speed or variable quantity reach the alarming threshold value of setting, detector sends differential temperature fire or constant temperature fire alarm signal.Then, existing temperature sensing cable there is operating temperature and the temperature difference of being failure to actuate between temperature large, the shortcoming such as trigger alarm sensitivity is lower, can't meet user demand completely.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of this invention is to provide a kind of Low Temperature Difference trigger-type temperature sensing cable, make it have operating temperature and be failure to actuate and have a narrow range of temperature between temperature, trigger alarm sensitivity is higher.
Technical scheme: in order to realize foregoing invention object, the technical solution used in the present invention is as follows:
A kind of Low Temperature Difference trigger-type temperature sensing cable, comprises conductor, insulating barrier, separator and oversheath; Described conductor is wrapped to form cable core by insulating barrier, and more than 2 and 2 cable cores are rolled into one by described separator; At described separator peripheral hardware oversheath; The cross-linking radiation hot melt insulating barrier that described insulating barrier is that operating temperature is 160 DEG C, the temperature of being failure to actuate is 120 DEG C and following temperature.
Described conductor is high strength elastic metallic material, for example copper-clad high carbon steel.
Described insulating barrier is made up of each component of following percentage by weight: 38-45% aluminium hydroxide, and 25-32% polyethylene, 7-12% ethylene-propylene diene copolymer, 0.5-2% rheological agent, 12.5-20% polyolefin, 1-5% antioxidant, each component weight percentage sum is 100%.
Described separator is slim polyester belt.
Described oversheath is flame-proof PVC oversheath, has cold-resistant-40 DEG C, high temperature resistant 120 DEG C, the characteristics such as resistance to diesel oil, gasoline.
Beneficial effect: compared with prior art, Low Temperature Difference trigger-type temperature sensing cable of the present invention, operating temperature and being failure to actuate has a narrow range of temperature between temperature, trigger alarm sensitivity is higher (to be specified in GB 16280-2005 standard, the temperature of being failure to actuate be operating temperature value 60%, if should be 96 DEG C by the temperature of being failure to actuate of this master copy product).This product can be widely used in the temperature alarming control of the engine bin such as automobile, locomotive, once the high temperature abnormality of engine cabin, this product will form the work of short-circuit condition triggering terminal warning device, complete the work such as cooling, fire extinguishing, effectively reduce, stop spreading of fire, extend escape time.This cable product has oil resistance, under 0# diesel oil or 92# gasoline or 95# gasoline, soaks 23 DEG C ± 5 DEG C of 48h(oil temperatures) after, jacket surface does not ftracture, does not expand, and has good practicality.
Brief description of the drawings
Fig. 1 is the structural representation of Low Temperature Difference trigger-type temperature sensing cable.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
As shown in Figure 1, Low Temperature Difference trigger-type temperature sensing cable, conductor 1 is made up of two high strength elastic metallic materials, every conductor 1 outside has been coated the insulating barrier 2 being made by cross-linking radiation hot melt insulating material, this insulating barrier 2 is in high temperature 160 DEG C of (operating temperature) and fusings in 30s, due to conductor 1 elasticity factor, conductor will crush the insulating barrier of fusing, make two conductors formation short-circuit conditions that contacts, after short circuit, triggering terminal warning device is worked, in the time of 120 DEG C (temperature of being failure to actuate) and following temperature, insulating barrier 2 can not produce molten state, can normally work for a long time.Meanwhile, adopt separator 3 that two conductors 1 that are all enclosed with insulating barrier 2 are rolled into one, and at separator 3 outer wrapping oversheaths 4.Wherein, conductor 1 is high strength elastic metallic material, preferably uses copper-clad high carbon steel.Separator 3 is slim polyester belt.Oversheath 4 is flame-proof PVC oversheath, has cold-resistant-40 DEG C, high temperature resistant 120 DEG C, the characteristics such as resistance to diesel oil, gasoline.
For the preparation of the cross-linking radiation hot melt insulating material of insulating barrier 2, each component by following percentage by weight forms: 38-45% aluminium hydroxide, 25-32% polyethylene, 7-12% ethylene-propylene diene copolymer, 0.5-2% rheological agent (rheological agent, silicone oil), 12.5-20% polyolefin, 1-5% antioxidant and small powder (R15, R10), each component weight percentage sum is 100%.Typical each component formula is as shown in table 1.
Table 1 cross-linking radiation hot melt insulating material formula
By above-mentioned each component, put into banbury, mill or screw extruder, at room temperature mixed-forming; Sample after moulding, is to be incubated 12 hours under 40 DEG C of conditions in temperature, is cooled to room temperature; Adopt electron beam or high-energy ray to carry out irradiation, irradiation metering is 9-10Mrad.
To the material of preparation, carry out Performance Testing, health hazard effect is edible not; Environment-friendly products, the low cadmium of low lead (Pb < 1000ppm, Cd < 100ppm.Hg < 1000ppm; CrVI < 1000ppm, PBBs < 1000ppm(is according to IEC62321:2008.); Toxic gas is not sent in decomposes or burning.
Low Temperature Difference trigger-type temperature sensing cable of the present invention, operating temperature and being failure to actuate has a narrow range of temperature between temperature, trigger alarm sensitivity higher (specify in GB 16280-2005 standard, 60% of the value that the temperature of being failure to actuate is operating temperature, if should be 96 DEG C by the temperature of being failure to actuate of this master copy product).This product can be widely used in the temperature alarming control of the engine bin such as automobile, locomotive, once the high temperature abnormality of engine cabin, this product will form the work of short-circuit condition triggering terminal warning device, complete the work such as cooling, fire extinguishing, effectively reduce, stop spreading of fire, extend escape time.This cable product has oil resistance, under 0# diesel oil or 92# gasoline or 95# gasoline, soaks 23 DEG C ± 5 DEG C of 48h(oil temperatures) after, jacket surface does not ftracture, does not expand.
Claims (5)
1. a Low Temperature Difference trigger-type temperature sensing cable, is characterized in that: comprise conductor (1), insulating barrier (2), separator (3) and oversheath (4); Described conductor (1) is wrapped to form cable core by insulating barrier (2), and more than 2 and 2 cable cores are rolled into one by described separator (3); At described separator (3) peripheral hardware oversheath (4); The cross-linking radiation hot melt insulating barrier that described insulating barrier (2) is that operating temperature is 160 DEG C, the temperature of being failure to actuate is 120 DEG C and following temperature.
2. Low Temperature Difference trigger-type temperature sensing cable according to claim 1, is characterized in that: the copper-clad high carbon steel that described conductor (1) is high strength elastic metallic material.
3. Low Temperature Difference trigger-type temperature sensing cable according to claim 1, it is characterized in that: described insulating barrier (2) is made up of each component of following percentage by weight: 38-45% aluminium hydroxide, 25-32% polyethylene, 7-12% ethylene-propylene diene copolymer, 0.5-2% rheological agent, 12.5-20% polyolefin, 1-5% antioxidant, each component weight percentage sum is 100%.
4. Low Temperature Difference trigger-type temperature sensing cable according to claim 1, is characterized in that: described separator (3) is slim polyester belt.
5. Low Temperature Difference trigger-type temperature sensing cable according to claim 1, is characterized in that: described oversheath (4) is flame-proof PVC oversheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307675.0A CN104112516B (en) | 2014-07-01 | 2014-07-01 | Low Temperature Difference trigger-type temperature sensing cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410307675.0A CN104112516B (en) | 2014-07-01 | 2014-07-01 | Low Temperature Difference trigger-type temperature sensing cable |
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| Publication Number | Publication Date |
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| CN104112516A true CN104112516A (en) | 2014-10-22 |
| CN104112516B CN104112516B (en) | 2016-10-26 |
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| CN201410307675.0A Expired - Fee Related CN104112516B (en) | 2014-07-01 | 2014-07-01 | Low Temperature Difference trigger-type temperature sensing cable |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340066Y (en) * | 1998-06-18 | 1999-09-22 | 金雪良 | Temp.-sensitive cable |
| CN2672806Y (en) * | 2003-10-28 | 2005-01-19 | 深圳琦富瑞电子有限公司 | Irradiation crosslinking polyvinyl electric wire |
| US20050167144A1 (en) * | 2002-05-15 | 2005-08-04 | Christoph Studer | String-shaped product with connecting and/or fixing means |
| CN201654285U (en) * | 2009-10-28 | 2010-11-24 | 张家港市汇金电力材料有限公司 | Novel hot-dipping copper-clad high-carbon steel line |
| CN201904131U (en) * | 2010-12-08 | 2011-07-20 | 安徽安邦控制系统有限公司 | Novel temperature sensing cable |
| CN102153812A (en) * | 2010-12-25 | 2011-08-17 | 金发科技股份有限公司 | Polyolefine sheathing compound for coaxial cable and preparation method thereof |
| CN103421208A (en) * | 2013-05-23 | 2013-12-04 | 浙江大学 | Irradiation cross-linking lithium-ion battery diaphragm and preparation method thereof |
| CN103524893A (en) * | 2013-09-30 | 2014-01-22 | 江苏达胜高聚物有限公司 | 125 DEG C irradiation crosslinked EPCV photovoltaic halogen-free flame-retardant sheath material and preparation method thereof |
| CN204010754U (en) * | 2014-07-01 | 2014-12-10 | 江苏天诚智能集团有限公司 | Low Temperature Difference trigger-type temperature sensing cable |
-
2014
- 2014-07-01 CN CN201410307675.0A patent/CN104112516B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340066Y (en) * | 1998-06-18 | 1999-09-22 | 金雪良 | Temp.-sensitive cable |
| US20050167144A1 (en) * | 2002-05-15 | 2005-08-04 | Christoph Studer | String-shaped product with connecting and/or fixing means |
| CN2672806Y (en) * | 2003-10-28 | 2005-01-19 | 深圳琦富瑞电子有限公司 | Irradiation crosslinking polyvinyl electric wire |
| CN201654285U (en) * | 2009-10-28 | 2010-11-24 | 张家港市汇金电力材料有限公司 | Novel hot-dipping copper-clad high-carbon steel line |
| CN201904131U (en) * | 2010-12-08 | 2011-07-20 | 安徽安邦控制系统有限公司 | Novel temperature sensing cable |
| CN102153812A (en) * | 2010-12-25 | 2011-08-17 | 金发科技股份有限公司 | Polyolefine sheathing compound for coaxial cable and preparation method thereof |
| CN103421208A (en) * | 2013-05-23 | 2013-12-04 | 浙江大学 | Irradiation cross-linking lithium-ion battery diaphragm and preparation method thereof |
| CN103524893A (en) * | 2013-09-30 | 2014-01-22 | 江苏达胜高聚物有限公司 | 125 DEG C irradiation crosslinked EPCV photovoltaic halogen-free flame-retardant sheath material and preparation method thereof |
| CN204010754U (en) * | 2014-07-01 | 2014-12-10 | 江苏天诚智能集团有限公司 | Low Temperature Difference trigger-type temperature sensing cable |
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| CN104112516B (en) | 2016-10-26 |
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