CN201732620U - Environment-friendly physical termite resistant cable - Google Patents
Environment-friendly physical termite resistant cable Download PDFInfo
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- CN201732620U CN201732620U CN2010201649948U CN201020164994U CN201732620U CN 201732620 U CN201732620 U CN 201732620U CN 2010201649948 U CN2010201649948 U CN 2010201649948U CN 201020164994 U CN201020164994 U CN 201020164994U CN 201732620 U CN201732620 U CN 201732620U
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Abstract
The utility model provides an environment-friendly physical termite resistant cable which comprises an insulated core and a termite resistant protecting layer, wherein the insulated core comprises a conductor and an insulating layer; and the termite resistant protecting layer made of semihard polyvinyl chloride material is covered outside the insulated core. The physical termite resistant cable adopts an environment-friendly semihard polyvinyl chloride sheath or protecting layer, does not contain heavy metal, such as lead, cadmium, hydrargyrum and the like, and harmful substance, such as hexavalent chrome, polybrominated diphenyl, polybrominated diphenyl ethers and the like, and meets the environmental protection requirement. The thickness of the semihard polyvinyl chloride material is at least Shore A95 or D70, which exceeds the biting thickness limit of termite, and the surface of the cable is too smooth for the termite to bite. The long term use of the termite resistant cable proves that the termite resistant cable has good termite resistant effect. As the semihard polyvinyl chloride material does not contain any chemical insecticide, and the problem caused by drug failure is avoided, the durability of the termite resistant performance of the termite resistant cable accords with the physical life of the cable sheath or protecting layer, and can accord with the service life of the cable, which can reach at least 40 years.
Description
Technical field:
The utility model relates to the power cable technical field, refers in particular to a kind of environment-friendly type physics termite proof cable.
Background technology:
Termite is a global difficult problem to the destruction of cable.The plastic sheath of cable is frequently taken place by termite damage.According to electric power, the telecommunication department investigation of China, found that the area of the underground plastic jacketed cable of termite moth erosion has: Guangdong, Fujian, Jiangxi, Zhejiang, Anhui, Sichuan, Hunan, Hubei, Yunnan, Hainan, Guangxi and Taiwan etc.Telecommunication cable, optical cable and power cable fault that these areas are caused by termite damage account for 60～70% of fault sum.In one more than 300 kilometer the underground plastics communication cable operation troubles of laying in 1972, the termite damage fault accounts for 60% in the area, Guangdong of located in subtropical zone.1955～1992 years, termite is taken place altogether for Guangdong and Hainan two provinces stung bad underground communication cable obstacle 31 times, and wherein sting bad 22 times the Guangzhou, accounts for 71% of failure rate.The ground high-tension cable buries by the erosion of termite moth from Japanese import in nineteen fifty-nine Guangzhou Huangpu power plant.1999～2002 years, the ground sheath of hv cable that buries of A factory of Dongguan Sha Jiao power plant and C factory successively suffered the erosion of termite moth.6 sections high-tension cables of Shenzhen in 1999 South Mountain cogeneration power plant are destroyed by termite, account for 66% of failure rate.Many of in November, 2000 Guangzhou discoveries are buried the ground high-tension cable and are bitten by termite.In the same year, Guangzhou is investigated 110～220kV crosslinked cable, finds that ant evil person accounts for 52%.The buried cable of calendar year 2001 Zhaoqing is seriously eaten into erosion by termite.2003, a cable termite moth of Zhanjiang Power Plant erosion point 113 places, termite moth erosion rate accounts for 69.3%.Guangzhou in 2003 has found that again several high pressure and extra-high-tension cable circuit all find the erosion of termite moth.The fault that 21 termites sting bad optical cable took place in Hong Kong lightguide cable link altogether from nineteen fifty-one to nineteen fifty-nine.The Hsin-chu science park once caused 7 power failures because of termite moth erosion cable.
So far, the anti-ant method taked of cable product mainly contains two kinds of chemical method and physics methods.Chemical method is exactly to add some chemicals in cable jacket material, with toxicity principle poisoning termite; The physics method is exactly to adopt the harder material of quality for example improved polyalkene or nylon making cable cover(ing), prevents termite destruction with the hardness principle.
The anti-ant material of chemistry was used since earlier 1900s, and what used at that time is natural insecticide, as the arsenical control termites.Nineteen forties, use made chemicals DDT, trichloro-benzenes, pentachlorophenol, Bromofume etc.Nineteen fifties, organochlorine ant killing agent Termiticides such as Niran, lindane, heptachlor, dieldrite, drinox and mirex have appearred.Middle 1980s, bring into use organophosphorus insecticide such as chlopyrifos and isofenphos and pyrethroid insecticides such as control termites such as Permethrin, cypermethrin, Biphenthrin and fenvalerate in developed country.Since nineteen nineties, specificity ant killing agents such as fluorine worm cyanogen, fluorine bell urea, sulfluramid and diflubenzuron have appearred again.Because organochlorine insecticides such as drinox, Niran, dieldrite, heptachlor, mirex produce serious harm to the mankind and environment, are called as persistence organic pollutant Persistent Organic Pollutants, are called for short POPs.Global treaty-" about the Convention of Stockholm of being organized and implemented by United Nations Environment Programme of persistence organic pollutant " requires the contracting party should " forbid and/or take necessary law and administrative measure to abolish " to the POPs product.
Existing so-called nontoxic termite proof cable protective cover material on the market all is to make with copper naphthenate class anti-termite agent basically, it is said good anti-ant effect, but its property of medicine term of validity manufacturing firm also dare not determine.Even this anti-ant material can play anti-preferably ant effect in a short time, but under the condition of power cable long-time running oversheath heating, the effectiveness of chemical insecticide can be less gradually, and therefore the term of validity of the anti-ant method of this chemistry can't be determined always, is a doubtful point all the time.
Abandon using termiticides such as drinox, Niran, dieldrite, heptachlor, mirex as early as possible for making countries in the world, United Nations Environment Programme, food and agricultural organization, global insect comprehensive regulation mechanism (UNEP/FAO/Global IPM Facility) tissue are set up termite biology and are administered expert group, expert group proposes the IPM strategy that termite is administered on research termite biology, ecological theory basis.The chemical method termite proof cable will progressively be eliminated, and physics method termite proof cable becomes the main flow of termite proof cable and the core of IPM strategy.
In recent years, the capsicim anti-termite agent had appearred again.Capsicim English name: capsaicine; Chemical name: just-Vanillyl pelargonic amide; Molecular formula: C17H27NO3 is a kind of capsaicine that contains the vanilla acid amides, has strong acid and unusual strong impulse.Capsicim is nontoxic, environmental protection, nuisanceless, effective component content is high, addition is little, the term of validity is long, can be used in electric wire, the fiber cable jacket as protection against rodents, anti-ant additive.Group and thing microcapsules based on capsicim, owing to have strong acid, can make the oral mucosa of muroid animal and olfactory nerves be subjected to intense stimulus and detest and reject to chew and cut, can hit simultaneously termite extremely again, it is a kind of bifunctional new material that has, can be used in the cable jacket materials such as PVC, PE, can prevent the moth erosion of muroid and termite product.But, when cable jacket material mixes with capsicim when extruding, can give out strong pungent gas, extremely harmful to health of operators.
The anti-ant material of at present commercially available physics method, a kind of is nylon 11 or nylon 12, another kind is the high density polyolefins material through modification.Though they do not contain harmful chemical substance, and hardness is bigger, be that environment-friendly type physics method is prevented the ant material preferably, it costs an arm and a leg, and has improved the material cost of termite proof cable, and is unsatisfactory economically, all unfavorable to cables manufacturing manufacturer and cable user.
Summary of the invention:
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of low physics termite proof cable of anti-ant, environmental protection, long service life and production cost that has is provided.
For achieving the above object, technical scheme provided by the utility model is: a kind of environment-friendly type physics termite proof cable, it comprises insulated wire cores, it also includes anti-ant sheath, wherein, insulated wire cores is made up of conductor, insulating barrier, and insulated wire cores is coated with the anti-ant sheath of being made by the semirigid PVC material.
Insulated wire cores in the described cable is single core, and the insulated wire cores diameter is provided with plastic sheath greater than 40mm between insulated wire cores and the anti-ant sheath.
Described plastic sheath and anti-ant sheath are the layering extrusion molding.
Insulated wire cores in the described cable is at least two, and the insulated wire cores diameter is less than 40mm, and tighten with twining package tape the mutual stranded back of insulated wire cores, is filled with packing material in the gap between insulated wire cores and the twining package tape, and twining package tape is coated with anti-ant sheath.
Insulated wire cores in the described cable is at least two, and the insulated wire cores diameter is greater than 40mm, tighten with twining package tape the mutual stranded back of insulated wire cores, is filled with packing material in the gap between insulated wire cores and the twining package tape, and twining package tape is coated with plastic sheath and anti-ant sheath outward successively.
The utility model is after having adopted such scheme, the physics termite proof cable of this programme adopts environment-friendly type semirigid PVC sheath or sheath, heavy metal and harmful substances such as sexavalence irons, Polybrominated biphenyl, Poly Brominated Diphenyl Ethers such as not leaded, cadmium, mercury, compliance with environmental protection requirements.The hardness of semirigid PVC material is at least Shao Shi A95 or D70, surpass the hardness limit that termite can bite, and cable surface is smooth, and termite can't be bitten.Through the long-term proof of using, anti-ant is respond well.Because of the semirigid PVC material does not contain any pest control with insecticide medicine, do not have any drug failure problem, thereby its anti-ant property retention time consistent with the physical life of cable cover(ing) or sheath can be synchronous with the useful life of cable, can reach 40 years at least.And do not need any chemical insecticide and polyolefine material modifier, so more than the low twice of anti-ant protective cover material made than materials such as the anti-ant of present chemistry, high density polyolefins of its price, greatly reduce the manufacturing cost of cable.
Description of drawings:
Structural representation when Fig. 1 is single core small bore for cable of the present utility model.
Structural representation when Fig. 2 is single core heavy in section for cable of the present utility model.
Structural representation when Fig. 3 is the multicore small bore for cable of the present utility model.
Structural representation when Fig. 4 is the multicore heavy in section for cable of the present utility model.
Reference numeral: 1-conductor, 2-insulating barrier, the anti-ant sheath of 3-, 4-plastic sheath, 5-insulated wire cores, 6-twining package tape, 7-packing material.
Embodiment:
The utility model is described in further detail to accompanying drawing 4 below in conjunction with accompanying drawing 1, and preferred embodiment of the present utility model is:
Embodiment 1:
Referring to accompanying drawing 1 and accompanying drawing 2, the described environment-friendly type physics of present embodiment termite proof cable, it comprises insulated wire cores 5, anti-ant sheath 3, wherein, insulated wire cores 5 is made up of conductor 1, insulating barrier 2, and wherein, conductor 1 can be single copper cash or aluminum steel, also can be that many copper cash or aluminum steel are stranded forms, and its manufacture method is identical with the normal cable conductor.Insulated wire cores 5 outer can directly coatings of small bore single-core cable are prevented ant sheath 3, and described anti-ant sheath 3 adopts the semirigid PVC materials to make.The hardness of semirigid PVC material is at least Shao Shi A95 or more than the D70, so the sheath extrusion temperature is higher slightly than common pvc sheathing compound.Generally can adopt screw diameter D is 65,95 and the plastic extruder of 150mm, screw rod can adopt draw ratio L/D be 20～25: 1 equidistantly do not wait dark gradation type screw rod.The temperature of extruder is for example set: 100～140 ℃ of feeding sections, 150～150 ℃ of compression sections, 160～150 ℃ of metering sections, 170～155 ℃ of shunting sections, 170～155 ℃ of die orifices.Cooling after extruding is identical with common pvc sheath.The anti-ant sheath of extruding 3 is wanted smooth surface, and any damage can not be arranged.
Insulated wire cores 5 diameters before single-core cable is extruded sheath are 40mm and when following, can directly extrude the anti-ant sheath 3 of semirigid PVC outside insulated wire cores 5.
And when single-core cable is extruded preceding insulated wire cores 5 diameters of sheath greater than 40mm, because semirigid PVC hardness is big, the anti-ant sheath of extruding big thickness is relatively more difficult, can extrude the anti-ant sheath 3 of semirigid PVC that a layer thickness is 1～1.5mm again in its outside earlier by product structure requirement extrusion plastic sheath 4.The anti-ant sheath of extruding 3 is wanted smooth surface, and any damage can not be arranged.
Embodiment 2:
Referring to accompanying drawing 3 and accompanying drawing 4, present embodiment as different from Example 1, described insulated wire cores 5 is many, and it is stranded mutually, insulated wire cores 5 after stranded is tightened by twining package tape 6, be filled with packing material 7 in insulated wire cores 5 after the coating and the gap between the twining package tape 6, twining package tape 6 outer plastic sheath 4 and the anti-ant sheaths 3 of being coated with successively, the thickness of anti-ant sheath 3 is 1.0～1.5mm.
Insulated wire cores 5 diameters before multicore cable is extruded sheath are 40mm and when following, earlier with each bar insulation core 5 stranded stranding, insert packing material 7 in the space, tighten with twining package tape 6 then, extrude and prevent ant sheath 3.
Insulated wire cores diameter before multicore cable is extruded sheath earlier with each bar insulation core 5 stranded stranding, is inserted packing material 7 during greater than 40mm in the space, tightens with twining package tape 6 then, and extrusion plastic sheath 4, extrude again and prevent ant sheath 3.
The embodiment of the above is the preferred embodiment of the utility model only, is not to limit practical range of the present utility model with this, so the variation that all shapes according to the utility model, principle are done all should be encompassed in the protection range of the present utility model.
Claims (5)
1. environment-friendly type physics termite proof cable, it comprises insulated wire cores (5), it is characterized in that: it also includes anti-ant sheath (3), wherein, insulated wire cores (5) is made up of conductor (1), insulating barrier (2), and insulated wire cores (5) is coated with the anti-ant sheath of being made by the semirigid PVC material (3).
2. a kind of environment-friendly type physics termite proof cable according to claim 1, it is characterized in that: the insulated wire cores (5) in the described cable is single core, and insulated wire cores (5) diameter is provided with plastic sheath (4) greater than 40mm between insulated wire cores (5) and the anti-ant sheath (3).
3. a kind of environment-friendly type physics termite proof cable according to claim 2 is characterized in that: plastic sheath (4) is the layering extrusion molding with anti-ant sheath (3).
4. a kind of environment-friendly type physics termite proof cable according to claim 1, it is characterized in that: the insulated wire cores (5) in the described cable is at least two, and insulated wire cores (5) diameter is less than 40mm, tighten with twining package tape (6) the mutual stranded back of insulated wire cores (5), be filled with packing material (7) in the gap between insulated wire cores (5) and the twining package tape (6), twining package tape (6) is coated with anti-ant sheath (3).
5. a kind of environment-friendly type physics termite proof cable according to claim 1, it is characterized in that: the insulated wire cores (5) in the described cable is at least two, and insulated wire cores (5) diameter is greater than 40mm, tighten with twining package tape (6) the mutual stranded back of insulated wire cores (5), be filled with packing material (7) in the gap between insulated wire cores (5) and the twining package tape (6), outer plastic sheath (4) and the anti-ant sheath (3) of being coated with successively of twining package tape (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649948U CN201732620U (en) | 2010-09-07 | 2010-09-07 | Environment-friendly physical termite resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649948U CN201732620U (en) | 2010-09-07 | 2010-09-07 | Environment-friendly physical termite resistant cable |
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| Publication Number | Publication Date |
|---|---|
| CN201732620U true CN201732620U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201649948U Expired - Fee Related CN201732620U (en) | 2010-09-07 | 2010-09-07 | Environment-friendly physical termite resistant cable |
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| CN (1) | CN201732620U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575515A (en) * | 2016-02-29 | 2016-05-11 | 苏州国华特种线材有限公司 | Termite-prevention special cable |
| CN105957606A (en) * | 2016-07-26 | 2016-09-21 | 深圳市国信达科技股份有限公司 | Double-layer insulated power line |
| CN113527824A (en) * | 2021-08-02 | 2021-10-22 | 上海凯波电缆特材股份有限公司 | Ultrahigh-hardness termite-resistant polyvinyl chloride cable material and preparation method thereof |
-
2010
- 2010-09-07 CN CN2010201649948U patent/CN201732620U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575515A (en) * | 2016-02-29 | 2016-05-11 | 苏州国华特种线材有限公司 | Termite-prevention special cable |
| CN105957606A (en) * | 2016-07-26 | 2016-09-21 | 深圳市国信达科技股份有限公司 | Double-layer insulated power line |
| CN113527824A (en) * | 2021-08-02 | 2021-10-22 | 上海凯波电缆特材股份有限公司 | Ultrahigh-hardness termite-resistant polyvinyl chloride cable material and preparation method thereof |
| CN113527824B (en) * | 2021-08-02 | 2022-04-15 | 上海凯波电缆特材股份有限公司 | Ultrahigh-hardness termite-resistant polyvinyl chloride cable material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20170907 |