CN102637477A - 1E-level K3-type electric wire and cable for mouse-and-ant-proof nuclear power station - Google Patents
1E-level K3-type electric wire and cable for mouse-and-ant-proof nuclear power station Download PDFInfo
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- CN102637477A CN102637477A CN2012101061060A CN201210106106A CN102637477A CN 102637477 A CN102637477 A CN 102637477A CN 2012101061060 A CN2012101061060 A CN 2012101061060A CN 201210106106 A CN201210106106 A CN 201210106106A CN 102637477 A CN102637477 A CN 102637477A
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Abstract
The invention discloses a 1E-level K3-type electric wire and cable for a mouse-and-ant-proof nuclear power station, comprising a wire core, a mouse-and-ant-proof sheath and an outer sheath. The wire core consists of a conductor and an insulating layer covered on the outer surface of the conductor; the insulating layer comprises an internal layer, namely, a crosslinked polyethylene layer, and an external layer, namely, a low-smoke halogen-free flame-retardant polyolefin layer; the mouse-and-ant-proof sheath is covered outside the wire core; and the outer sheath is covered outside the mouse-and-ant-proof sheath. According to the 1E-level K3-type electric wire and cable, a remarkable mouse-and-ant-proof effect of the electric wire and cable is achieved by utilizing a physical method without adding any toxic medicine. The 1E-level K3-type electric wire and cable has excellent performance of no toxicity, high efficiency and durability. Besides, the flame-retardant and low-smoke effect is very remarkable.
Description
Technical field
The invention belongs to technical field of electric wires and cables, be specifically related to a kind of protection against rodents ant type used in nuclear power station 1E level K3 class electric wire.
Background technology
According to statistics, the nuclear power generating sets that the present whole world has put into operation surpass 430, and installed capacity 530000Mw, energy output account for 17% of world's gross generation.The summation that surpasses world's energy output in 1958.Current have 30 reactors of 12 countries to build.What the nuclear power plant reactor application was maximum is technological comparative maturity; The reliable pressure water reactor of fail safe, big II huge gulf nuclear power station of having built that China is present and Qinshan nuclear power plant (first phase) and all adopt this type of heap type at the Qinshan nuclear power plant of building (second phase), mountain range Australia and gulf, field nuclear power station.Than traditional energy; Nuclear power is the energy of a kind of economy, cleaning. but the nuclear power accident that occurs in nuclear power station four more than ten years developing history reminds people constantly. the safety problem of nuclear power station is most important, and strict safety has been taked to nuclear power station in countries in the world.Strict demand to the various cables of nuclear power station " nerve " is one of them.
Mouse is everlasting and creeps on electric substation's electric power telecommunications room distribution transformer, causes phase fault between the transformer porcelain vase binding post, not only burns out equipment, also often causes electric substation's tripping operation, enlarges power outage, threatens very big to safe operation of power system.Someone estimates that the various mouse sums in the present whole world are about 4 times of population.About 20,000,000,000 dollars of the annual economic loss that is directly caused by mouse if the various losses that cause mouse are added up, can reach the more than one hundred billion dollar.According to the World Food Programme's investigation, the whole world is annual because of 3,300 ten thousand tons in mouse loss storage grain, because of 5,000 ten thousand tons of the plague of rats underproduction, can supply 300,000,000 people to eat completely 1 year.In the accident of the national dynamical system of Italy, have 1st/3rd approximately, mouse causes.
The Oil of Shanghai Petrochemical Company head factory Ceng Yinyi of a cogeneration power plant Rattus norvegicus in 1980 scurries into high-voltage switch gear and causes short circuit; Cause water, electricity, gas to interrupt suddenly; Also once bitten broken by mouse with a toll of 1,700 ten thousand yuan of Beijing Metro, caused the parking accident, and caused thousands of passenger to be trapped in the tunnel because of cable.USA New York in 1938 is once stung bad making in the whole city because of cable by mouse and is had a power failure.The Gary fire has 1st/4th approximately, by mouse gnaw bad cable, electric wire causes.Muroid mainly is at concerned power to the harm of industry.Muroid usually gets into switchgear house and causes that short circuit causes power outage, and economic loss is very huge.The main mode of harm: the cable insulation material that bites, or scurry in the transformer, cause short circuit even initiation fire; When walking close to high-voltage line, because the high-intensity magnetic field induction can puncture, burn electric equipment.
The report that external existing lead-covered cable is gnawed through by termite before more than 100 year; 20th century, plastic cable frequently took place by termite damage especially; With the south investigation of recent China is example, and the telecommunication cable fault that causes because of termite accounts for 60% of total failare rate, and Guangdong Province reaches as high as 80%; Telecommunication cable gently then reduces communication quality because of ant evil fault, and is heavy then cause communication interruptions of being obstructed, and power cable causes short circuit accident after being gnawed through sheath by termite probably, makes electric power conveying interruption, even leads to terrible disaster; Railway and airport signal cable are malfunctioning because of the ant evil, make transportation safety receive serious threat, airport, Quzhou, Zhejiang Province and Xiao Shan railway underground cable; All because of burying cable underground by the disconnected communication disruption that makes of termite moth; Fortunately find in time not cause disaster, have to the worker employed in a plant nursery is expensive bury (1994) again underground; The 3.5 ten thousand volts of power cables in chemical fibre factory, Guangzhou in 1993 are eaten in by termite and cause twice explosion accident; The one section 6 kilometers long PE cable in Mei Jia depressed place, Hangzhou are eaten in by termite, cause cable to scrap (1989).The foodstuff of termite mainly is cellulose and the hemicellulose in the plant, and termite moth erosion cable jacket is in seeking the food process or a kind of destruction of nesting and being: combine the life habit analysis of termite.Underlying cause causes the direct-burried high-tension cable often by termite attack: (1) direct-burried high-tension cable is in the environment of dark, wet for a long time, meets the life habit that becoming of termite is dark, become wet, is beneficial to the termite growth and nests.(2) in the direct-burried high-tension cable work progress, contain wooden impurity such as grass roots in the backfill soil, abundant food source is provided to termite.(3) working temperature of cable is generally 60-90 ℃, and the soil moisture of cable periphery also raises synchronously, meets the thermotactic life habit of termite, and the termite that attracts periphery more easily is to the cable trough growth and breeding.(4) high-tension cable often is laid in road, the bridge both sides, and annual 4-6 month termite hives off season, and street lamp can have near termite the wing adult to attract to come, and has increased these regional population densities.(5) after termite gnaws through the arrival metallic sheath to cable jacket; The formic acid of termite secretion quickens the oxidation of metallic sheath; Just cause the infringement of termite more easily; Just cause cable insulation to make moist after metallic sheath is destroyed, it is aging and cause dielectric strength to reduce under electric field action, can to quicken dendroid, causes single-line to ground fault when serious.
The termite-proof branch that chemical method and physical method are arranged of cable, chemical method is in cable jacket material, to add pesticide, principal item has Niran; Dieldrite, drinox, heptachlor etc.; Use proof that good anti-ant effect is arranged for a long time, still, owing to health is poisoned in the volatilization of being heated at sheath extrusion process Chinese traditional medicine; Cable use the age long afterwards medicine can from sheath, move, soil and water source are polluted, so the way of this adding toxicity pesticide is superseded basically at present; For toxicity and the pollution that alleviates chemical method, Japanese electric wire adopts the organophosphor based compound of low toxicity as the termite-proof medicament, and the invention of Mitsubishi electric wire industrial group is added on benzimidazole compound in the polyethylene sheath material; But this method is special etc. former thereby do not obtain popularization because of material preparation process, and at present domestic also have a Dalmatian chrysanthemum class of using a kind of low toxicity, and chemical agent adds in the protective cover material to go out termite; How effect still remains to use proof in recent years, the capsicim anti-termite agent occurred.Capsicim (English name: capsaicine; Chemical name: just-Vanillyl pelargonic amide; Molecular formula: C
17H
27NO
3), be a kind of capsaicine that contains the vanilla acid amides, have strong acid and unusual strong impulse property.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.Is main group and thing microcapsules with the capsicim, owing to have strong acid, can makes the oral mucosa of muroid animal receive intense stimulus and detest and reject to chew and cut that the while can be hit again and killed termite, is a kind of bifunctional new material that has with olfactory nerves.Be used for cable coated materials such as PVC, PE, can prevent that mouse, termite from injuring the food erosion of product, the premium properties that product is nontoxic, efficient, lasting has been confirmed in the use for many years through cable manufacturing enterprise.If in the material that with the polyolefin is the basis, add compounding ingredients such as anti-termite agent and fire retardant, can process low cigarette thing poison termite proof cable coated material.The place that this cable is used to be laid in and has fire-retardant, low cigarette, nontoxic and anti-ant to require more than the ground.But; These materials mainly are to the stimulation of sense of smell and sense of taste mucous membrane when relying on smell or contact; Play the purpose that repellent action reaches anti-ant, therefore in material extrusion process, can give out irritating smell, need take operations necessary place exhausting and personnel's labour protection measures.In addition, the aging problem that anti-termite agent was lost efficacy gradually of serving also perplexs applying of this kind method always.
Outer in order to overcome the anti-ant of chemistry by the aging problem that anti-termite agent was lost efficacy gradually, carried out the research of having inquired into the anti-ant of cable from the physics aspect again.
Summary of the invention
The object of the present invention is to provide a kind of protection against rodents ant type used in nuclear power station 1E level K3 class electric wire.
The object of the invention can be realized through following technical scheme:
A kind of protection against rodents ant type used in nuclear power station 1E level K3 class electric wire; Comprise single line core, protection against rodents ant sheath and oversheath, it is that said core is made up of conductor and the insulating barrier that is wrapped in the conductor outer surface, and described insulating barrier is a double-layer structure; The internal layer of said insulating barrier is the crosslinked polyethylene layer; Skin is the low smoke halogen-free flame-retardant polyolefin layer, described core outerwrap protection against rodents ant sheath, described protection against rodents ant sheath outerwrap oversheath.
A kind of protection against rodents ant type used in nuclear power station 1E level K3 class electric wire comprises many cores, protection against rodents ant sheath and oversheath, and it is that said core is made up of conductor and the insulating barrier that is wrapped in the conductor outer surface; Described insulating barrier is a double-layer structure; The internal layer of said insulating barrier is the crosslinked polyethylene layer, and skin is the low smoke halogen-free flame-retardant polyolefin layer, and many described cores are arranged or stranded back formation cable core; Described cable core outerwrap protection against rodents ant sheath, described protection against rodents ant sheath outerwrap oversheath.
A kind of protection against rodents ant type used in nuclear power station 1E level K3 class electric wire; Comprise many cores, protection against rodents ant sheath and oversheath, its be said core by conductor, be wrapped in the insulating barrier of conductor outer surface and be located at the outside protection against rodents ant sheath of insulating barrier and form, described insulating barrier is a double-layer structure; The internal layer of said insulating barrier is the crosslinked polyethylene layer; Skin is the low smoke halogen-free flame-retardant polyolefin layer, and many described cores are arranged or stranded back formation cable core described cable core outerwrap oversheath.
Above-mentioned protection against rodents ant type used in nuclear power station 1E level K3 class electric wire, it is that the material of said protection against rodents ant sheath is that the termite-proof anti-rat eaten plastic cable sheath material of nylon polymer, semihard PVC, improved polyalkene copolymer or environment-friendly type " moves back deinsectization ".Described nylon polymer is nylon 11 or nylon 12; Described improved polyalkene copolymer is the extraordinary polyolefin of high rigidity.The material of said oversheath is a low smoke halogen-free flame-retardant polyolefin.The material of said conductor is copper, tin-coated copper or other surface treated copper conductor.
Nylon is the very big material of a kind of viscosity flow property, mainly is nylon 12, uses more with states such as Australia.Semihard PVC brings up to Shao Shi D63-65 with the hardness of common PVC to get final product, and does not mix any drug toxicity, and anti-ant effect is quite remarkable.
The termite-proof anti-rat eaten plastic cable sheath material of environment-friendly type " moves back deinsectization (Termigon) ", is a kind of nontoxic, harmless, anti-goodish termite proof cable material of ant effect.The extraordinary polyolefin of high rigidity the early 1990s, the extraordinary polyolefin cable protective cover material of Britain one cable material factory exploitation first generation termite-proof.
Beneficial effect of the present invention:
The protection against rodents ant type used in nuclear power station 1E level K3 class electric wire of the present invention's design adopts physical method to realize the protection against rodents ant effect of electric wire, does not mix any drug toxicity, and anti-ant effect is quite remarkable.Has nontoxic, efficient, lasting premium properties.And the effect of its fire-retardant, low cigarette is highly significant also.
Description of drawings
Fig. 1 is the protection against rodents ant type used in nuclear power station 1E level K3 class electric wire longitudinal section view of single cored structure.
Fig. 2 is the protection against rodents ant type used in nuclear power station 1E level K3 class electric wire longitudinal section view of multicore structure one.
Fig. 3 is the protection against rodents ant type used in nuclear power station 1E level K3 class electric wire longitudinal section view of multicore structure two.
Embodiment
Scheme one: protection against rodents ant type used in nuclear power station 1E level K3 class electric wire as shown in Figure 1; Comprise single line core, protection against rodents ant sheath and oversheath, said core is made up of conductor 1 and the insulating barrier that is wrapped in conductor 1 outer surface, and described insulating barrier is a double-layer structure; The internal layer of said insulating barrier is a crosslinked polyethylene layer 2; Skin is a low smoke halogen-free flame-retardant polyolefin layer 3, described core outerwrap protection against rodents ant sheath 4, described protection against rodents ant sheath 4 outerwrap oversheaths 5.The material of described protection against rodents ant sheath 4 is a nylon 12, and the material of described oversheath 5 is a low smoke halogen-free flame-retardant polyolefin, and the material of described conductor 1 is a copper.In the double-layer structure of insulating barrier, internal layer is that crosslinked polyethylene layer 2 is used to guarantee electrical property, and outer low smoke halogen-free flame-retardant polyolefin layer 3 is used for guaranteeing to pass through fire retardancy test; Protection against rodents ant sheath 4 is used to prevent that mouse and ant are to the destruction of cable with prevent that cable insulation from making moist; The material of oversheath 5 is that low smoke halogen-free flame-retardant polyolefin is used for the protection insulation and plays fire retardation.
Scheme two: protection against rodents ant type used in nuclear power station 1E level K3 class electric wire as shown in Figure 2; Comprise many cores, protection against rodents ant sheath and oversheath; Said core is made up of conductor 1 and the insulating barrier that is wrapped in conductor 1 outer surface, and described insulating barrier is a double-layer structure, and the internal layer of said insulating barrier is a crosslinked polyethylene layer 2; Skin is a low smoke halogen-free flame-retardant polyolefin layer 3; And many described cores are arranged or stranded back formation cable core described cable core outerwrap protection against rodents ant sheath 4, described protection against rodents ant sheath 4 outerwrap oversheaths 5.The material of described protection against rodents ant sheath 4 is nylon 12 or semihard PVC, and the material of described oversheath 5 is a low smoke halogen-free flame-retardant polyolefin, and the material of described conductor 1 is a tin-coated copper.In the double-layer structure of insulating barrier, internal layer is that crosslinked polyethylene layer 2 is used to guarantee electrical property, and outer low smoke halogen-free flame-retardant polyolefin layer 3 is used for guaranteeing to pass through fire retardancy test; Protection against rodents ant sheath 4 is used to prevent that mouse and ant are to the destruction of cable with prevent that cable insulation from making moist; The material of oversheath 5 is that low smoke halogen-free flame-retardant polyolefin is used for the protection insulation and plays fire retardation.
Scheme three: protection against rodents ant type used in nuclear power station 1E level K3 class electric wire as shown in Figure 3; Comprise many cores, protection against rodents ant sheath and oversheath; Said core by conductor 1, be wrapped in the insulating barrier of conductor 1 outer surface and be located at the outside protection against rodents ant sheath of insulating barrier and form; Described insulating barrier is a double-layer structure, and the internal layer of said insulating barrier is a crosslinked polyethylene layer 2, and skin is a low smoke halogen-free flame-retardant polyolefin layer 3; And many described cores are arranged or stranded back formation cable core described cable core outerwrap oversheath 5.The material of described protection against rodents ant sheath 4 is that the termite-proof anti-rat eaten plastic cable sheath material of environment-friendly type " moves back deinsectization ", and the material of described oversheath 5 is a low smoke halogen-free flame-retardant polyolefin, and the material of described conductor 1 is a tin-coated copper.In the double-layer structure of insulating barrier, internal layer is that crosslinked polyethylene layer 2 is used to guarantee electrical property, and outer low smoke halogen-free flame-retardant polyolefin layer 3 is used for guaranteeing to pass through fire retardancy test; Protection against rodents ant sheath 4 is used to prevent that mouse and ant are to the destruction of cable with prevent that cable insulation from making moist; The material of oversheath 5 is that low smoke halogen-free flame-retardant polyolefin is used for the protection insulation and plays fire retardation.
Nylon is the very big material of a kind of viscosity flow property, mainly is nylon 12, uses more with states such as Australia.Semihard PVC brings up to Shao Shi D63-65 with the hardness of common PVC to get final product, and does not mix any drug toxicity, and anti-ant effect is quite remarkable.The termite-proof anti-rat eaten plastic cable sheath material of environment-friendly type " moves back deinsectization (Termigon) ", is a kind of nontoxic, harmless, anti-goodish termite proof cable material of ant effect.
Claims (7)
1. protection against rodents ant type used in nuclear power station 1E level K3 class electric wire; Comprise single line core, protection against rodents ant sheath and oversheath, it is characterized in that said core is made up of conductor (1) and the insulating barrier that is wrapped in conductor (1) outer surface, described insulating barrier is a double-layer structure; The internal layer of said insulating barrier is crosslinked polyethylene layer (2); Skin is low smoke halogen-free flame-retardant polyolefin layer (3), described core outerwrap protection against rodents ant sheath (4), described protection against rodents ant sheath (4) outerwrap oversheath (5).
2. protection against rodents ant type used in nuclear power station 1E level K3 class electric wire; Comprise many cores, protection against rodents ant sheath and oversheath; It is characterized in that said core is made up of conductor (1) and the insulating barrier that is wrapped in conductor (1) outer surface, described insulating barrier is a double-layer structure, and the internal layer of said insulating barrier is crosslinked polyethylene layer (2); Skin is low smoke halogen-free flame-retardant polyolefin layer (3); And many described cores are arranged or stranded back formation cable core described cable core outerwrap protection against rodents ant sheath (4), described protection against rodents ant sheath (4) outerwrap oversheath (5).
3. protection against rodents ant type used in nuclear power station 1E level K3 class electric wire; Comprise many cores, protection against rodents ant sheath and oversheath; It is characterized in that said core is made up of conductor (1), the insulating barrier protection against rodents ant sheath outside with being located at insulating barrier that be wrapped in conductor (1) outer surface; Described insulating barrier is a double-layer structure, and the internal layer of said insulating barrier is crosslinked polyethylene layer (2), and skin is low smoke halogen-free flame-retardant polyolefin layer (3); And many described cores are arranged or stranded back formation cable core described cable core outerwrap oversheath (5).
4. according to claim 1,2 or 3 described protection against rodents ant type used in nuclear power station 1E level K3 class electric wires, the material that it is characterized in that said protection against rodents ant sheath (4) is that the termite-proof anti-rat eaten plastic cable sheath material of nylon polymer, semihard PVC, improved polyalkene copolymer or environment-friendly type " moves back deinsectization ".
5. protection against rodents ant type used in nuclear power station 1E level K3 class electric wire according to claim 4 is characterized in that described nylon polymer is nylon 11 or nylon 12; Described improved polyalkene copolymer is the extraordinary polyolefin of high rigidity.
6. according to claim 1,2 or 3 described protection against rodents ant type used in nuclear power station 1E level K3 class electric wires, the material that it is characterized in that said oversheath (5) is a low smoke halogen-free flame-retardant polyolefin.
7. according to claim 1,2 or 3 described protection against rodents ant type used in nuclear power station 1E level K3 class electric wires, the material that it is characterized in that said conductor (1) is copper, tin-coated copper or other surface treated copper conductor.
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| CN2012101061060A CN102637477A (en) | 2012-04-11 | 2012-04-11 | 1E-level K3-type electric wire and cable for mouse-and-ant-proof nuclear power station |
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| CN2012101061060A CN102637477A (en) | 2012-04-11 | 2012-04-11 | 1E-level K3-type electric wire and cable for mouse-and-ant-proof nuclear power station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104425066A (en) * | 2013-09-08 | 2015-03-18 | 湖北鄂电萃宇电缆有限公司 | Environment-friendly comprehensively protected electronic computer shielded cable |
| CN106229061A (en) * | 2016-08-30 | 2016-12-14 | 无锡江南电缆有限公司 | A kind of crosslinked polyetylene insulated nylon protection of electrical cable |
| CN109509578A (en) * | 2019-01-11 | 2019-03-22 | 河北华通线缆集团股份有限公司 | A kind of distributed photovoltaic cable and production method |
| CN110998754A (en) * | 2017-07-12 | 2020-04-10 | 陶氏环球技术有限责任公司 | Cable sheath for resisting harmful organisms |
| CN111746054A (en) * | 2020-05-28 | 2020-10-09 | 浙江邦德管业有限公司 | Power protection tube resistant to biological erosion |
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| CN201749724U (en) * | 2010-07-30 | 2011-02-16 | 江苏淮胜电缆有限责任公司 | Cable for resisting termites |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104425066A (en) * | 2013-09-08 | 2015-03-18 | 湖北鄂电萃宇电缆有限公司 | Environment-friendly comprehensively protected electronic computer shielded cable |
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| CN110998754A (en) * | 2017-07-12 | 2020-04-10 | 陶氏环球技术有限责任公司 | Cable sheath for resisting harmful organisms |
| CN110998754B (en) * | 2017-07-12 | 2022-10-28 | 陶氏环球技术有限责任公司 | Cable sheath for resisting harmful organisms |
| CN109509578A (en) * | 2019-01-11 | 2019-03-22 | 河北华通线缆集团股份有限公司 | A kind of distributed photovoltaic cable and production method |
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| CN111746054B (en) * | 2020-05-28 | 2023-04-07 | 浙江邦德管业有限公司 | Power protection tube resistant to biological erosion |
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Application publication date: 20120815 |