CN201897996U - Rat-proof and termite-proof power cable - Google Patents
Rat-proof and termite-proof power cable Download PDFInfo
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- CN201897996U CN201897996U CN2010202854545U CN201020285454U CN201897996U CN 201897996 U CN201897996 U CN 201897996U CN 2010202854545 U CN2010202854545 U CN 2010202854545U CN 201020285454 U CN201020285454 U CN 201020285454U CN 201897996 U CN201897996 U CN 201897996U
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Abstract
The utility model discloses a rat-proof and termite-proof power cable which comprises a conductive wire core arranged axially, a wrapped semi-conductive internal shielding layer axially sleeved on the periphery of the conductive wire core, a conductor shielding layer axially sleeved on the periphery of the wrapped semi-conductive internal shielding layer, an insulation layer axially sleeved on the periphery of the conductor shielding layer, an insulation shielding layer axially sleeve on the periphery of the insulation layer, a semi-conductive buffer water-blocking tape axially sleeved on the periphery of the insulation shielding layer, a corrugated aluminum sheath axially sleeved on the periphery of the semi-conductive buffer water-blocking tape, an asphalt anticorrosive coating axially sleeved on the periphery of the corrugated aluminum sheath, an outer sheath axially sleeved on the periphery of the asphalt anticorrosive coating, and a graphite coating axially sleeved on the periphery of the outer sheath. The rat-proof and termite-proof power cable overcomes the defects that the power cable in prior art is harmful to human health, has poor environmental protection performance and has high production cost, and realizes the advantages of being beneficial to human health, having excellent environmental protection performance and low production cost.
Description
Technical field
The utility model relates to cable, particularly, relates to the termite-proof power cable of a kind of protection against rodents.
Background technology
China is termite one of the strongest country of procreation of living in the world.Except that Xinjiang, Qinghai, Ningxia, Inner Mongol, Heilungkiang and Jilin Province, other areas are the trace of visible termite all, and increases gradually from north orientation south.According to relevant department's data introduction, China found once all in many areas that termite stung the situation of the underground plastic cable of moth, wherein serious with Guangdong and Guangxi Provinces, Fujian and Taiwan, a lot of areas the termite cable cover(ing) that bites just occurred and have caused sheath to puncture, operation brings very big harm to cable, for guaranteeing the normal operation of cable, this just needs cable that termite-proof function is arranged.
Electric wire termite-proof is a difficult problem of puzzlement manufacturer always, should guarantee good anti-ant effect, be convenient to again operation not to around pollute.According to the structure and the characteristics of termite-proof cable, design effective more termite-proof scheme.The structure of the typical termite-proof cable of protection against rodents is followed successively by from inside to outside: conductor, insulating barrier, resilient coating, radially watertight composition, outer jacket! Wherein the oversheath of cable can produce certain induced voltage in the process of cable operation, different according to current-carrying capacity of cable and length, and its induced voltage also could correspondingly increase! Reach as high as 100V, can work the mischief human body! Therefore oversheath is for very big of the effect of electric wire, and the GB/T11017 standard code requires each root cable jacket is carried out 25kV 1min DC voltage withstand test when cable dispatches from the factory, and qualified can possess the qualification of dispatching from the factory.Finish in cable construction and also will carry out 10kV 1min DC voltage withstand test, satisfy the requirements and to put into operation, very big of the effect of visible cable jacket cable jacket.And muroid and termite gnaw cable jacket in the meeting in service of cable, cause oversheath to puncture, and the harm cable normally moves.
Early stage is termite-proof relatively simple for structure, as dose auxiliary agent such as anti-termite agent in plastics.Anti-termite agent divides organic and inorganic two classes, and type of action mainly contains chlorine-containing compound, organophosphor and carbamate for food kills, tags, repellent.The lasting chlorine-containing compound of many effective utilizations in the plastics promptly adds the relatively more responsive smell of termite in jacket material, make it to be reluctant close, disperses termite, to reach termite-proof effect.But this material has pungent smell in the process of producing, human body skin is easy to generate allergic reaction, can not directly contact cable with hand, and is very big to the harm of direct labor's health.Simultaneously, this material can slowly distribute decomposition during putting into operation, and not only termite-proof effect can reduce, and soil on every side causes certain pollution.
A kind of nylon sheath wire material was arranged again afterwards, just adopt the oversheath material of nylon as cable, hardness and smoothness by nylon material, termite can't be bitten, this material can not work the mischief and pollute environment on every side, but because the property of nylon material, very difficult in the process that production is extruded, general extruder screw can't be produced, need by special-purpose extruder and screw rod production, drop into very big, and and other equipment can't be general, cause production cost higher.
The 110kV crosslinked cable has many advantages than the aerial line cable: save material, communication robust, secret and safe, be not afraid of typhoon blow disconnected, lack and account for the arable land, do not hinder traffic etc., at present just in wide popularization and application.From the forties in 20th century, the cable plastics development is very fast, in most cases oversheath all uses polyvinyl chloride (being called for short PVC) and polyethylene (being called for short PE) to make the cable cover(ing) layer, it has good electric property, advantages such as cost is low, production is easy to use and corrosion-resistant have been widely used in communication and electric power a few days ago and have carried.But the problem of termite damage also appears generally being subjected in these cables.Termite accounts for the 60%-80% of Guangdong Province's communication line total failare rate to the moth erosion of burying ground telecommunication cable plastic sheath layer.In addition, termite also can be destroyed electric power equipment such as enamelled wire, rubber sheathed wire, yellow varnished insulating cloth, wire casing plate and switchboards, seriously can cause short circuit accident.
Termite lives in the dark surrounds, nests in soil, in the wood or in tall and big native ridge, and it is hidden to build the tunnel activity, and harm is difficult for making the people to discover.The termite damage scope is very extensive, relates to many departments of national economy, as building construction, means of transportation, telecommunication facility, rivers dyke, reservoir earth dam, archives and books, textile, weapons and ammunitions, various agriculture and forestry plants etc.
At present, the termite-proof power cable of the crosslinked polyetylene insulated ultrahigh hardness polyolefin of 110kV oversheath protection against rodents is mainly used to transmit electromagnetic signal, the connection lead-out wire and the urban distribution network overhead transmission line that are used for each power station are gone into the ground connection line, the scope of application is very extensive, adopts the termite-proof technology of above-mentioned protection against rodents all improper; As seen, the needs appearance is a kind of can prevent effectively that ant does not endanger environment, the termite-proof technology of protection against rodents that can make production cost reduce, increase work efficiency again.
In sum, in realizing process of the present utility model, the inventor finds to exist at least in the prior art following defective:
(1) is detrimental to health: adopt the technology of in plastics, dosing auxiliary agents such as anti-termite agent, because anti-termite agent has pungent smell in the process of producing, human body skin is easy to generate allergic reaction, can not directly contacts cable with hand, very big to the harm of direct labor's health;
(2) feature of environmental protection is poor: anti-termite agent this material during putting into operation can slowly distribute decomposition, and not only termite-proof effect can reduce, and soil on every side causes certain pollution;
(3) production cost height: adopt the technology of nylon as the oversheath material of cable, because the property of nylon material, very difficult in the process that production is extruded, equipment cost is higher.
Summary of the invention
The purpose of this utility model is, at the problems referred to above, proposes the termite-proof power cable of a kind of protection against rodents, to realize helping health, the feature of environmental protection is good and production cost is low advantage.
For achieving the above object, the technical solution adopted in the utility model is: the termite-proof power cable of a kind of protection against rodents, the conductor wire core that comprises axial setting, axially be socketed in the wrapped semiconductive internal shield of described conductor wire core periphery, axially be socketed in the conductor shield of described wrapped semiconductive internal shield periphery, axially be socketed in the insulating barrier of described conductor shield periphery, axially be socketed in the insulation screen of described insulating barrier periphery, axially be socketed in the semi-conductive buffer water-blocking band of described insulation screen periphery, axially be socketed in the corrugated aluminum sheath of described semi-conductive buffer water-blocking band periphery, axially be socketed in the pitch corrosion-inhibiting coating of described corrugated aluminum sheath periphery, axially be socketed in the oversheath of described pitch corrosion-inhibiting coating periphery, and the equadag coating that axially is socketed in described oversheath periphery.
Further, described oversheath is to contain polyethylene and the polyolefinic oversheath of ultrahigh hardness.
The termite-proof power cable of the protection against rodents of each embodiment of the utility model, owing to comprise the conductor wire core, wrapped semiconductive internal shield, conductor shield, insulating barrier, insulation screen, semi-conductive buffer water-blocking band, corrugated aluminum sheath, pitch corrosion-inhibiting coating, oversheath and the equadag coating that axially are provided with successively from inside to outside, like this, adopt ep-type material, can not work the mischief to human body and environment, expressing technique is simpler; And, adopt and contain polyethylene and the polyolefinic oversheath of ultrahigh hardness, help increasing the hardness of oversheath; Outside oversheath, apply smooth equadag coating, help improving the hardness and the smoothness of oversheath; Thereby can overcome in the prior art be detrimental to health, feature of environmental protection difference and the high defective of production cost, to realize helping health, the feature of environmental protection is good and production cost is low advantage.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the transverse sectional view of the termite-proof power cable of the utility model protection against rodents.
In conjunction with the accompanying drawings, Reference numeral is as follows among the utility model embodiment:
The 1-conductor wire core; The wrapped semiconductive internal shield of 2-; The 3-conductor shield; The 4-insulating barrier; The 5-insulation screen; The 6-semi-conductive buffer water-blocking band; The 7-corrugated aluminum sheath; 8-pitch corrosion-inhibiting coating; The 9-oversheath; The 10-equadag coating.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.
According to the utility model embodiment, provide a kind of protection against rodents termite-proof power cable.As shown in Figure 1, present embodiment comprises the conductor wire core 1 that axially is provided with successively from inside to outside, wrapped semiconductive internal shield 2, conductor shield 3, insulating barrier 4, insulation screen 5, semi-conductive buffer water-blocking band 6, corrugated aluminum sheath 7, pitch corrosion-inhibiting coating 8, oversheath 9 and equadag coating 10, particularly, wrapped semiconductive internal shield 2 axially is socketed in the periphery of conductor wire core 1, conductor shield 3 axially is socketed in the periphery of wrapped semiconductive internal shield 2, insulating barrier 4 axially is socketed in the periphery of conductor shield 3, insulation screen 5 axially is socketed in the periphery of insulating barrier 4, semi-conductive buffer water-blocking band 6 axially is socketed in the periphery of insulation screen 5, corrugated aluminum sheath 7 axially is socketed in the periphery of semi-conductive buffer water-blocking band 6, pitch corrosion-inhibiting coating 8 axially is socketed in the periphery of corrugated aluminum sheath 7, oversheath 9 axially is socketed in the periphery of pitch corrosion-inhibiting coating 8, and equadag coating 10 axially is socketed in the periphery of oversheath 9.
Further, in the above-described embodiments, above-mentioned oversheath 9 is to contain polyethylene and the polyolefinic oversheath of ultrahigh hardness.
In the above-described embodiments, the employing polyethylene is a base-material, by increasing poly hardness and smoothness, reaches the termite-proof effect of protection against rodents; To improve the extrusion performance of polyethylene material simultaneously, make it on conventional equipment, can finish and extrude.By with the common discussion and the research of raw material producer, raw material are claimed, and make extrusion die, the cable fulfils Expected Results of production according to raw-material performance; And cable sample is delivered to Guangdong insect research institute test, prove that the termite-proof cable of producing of protection against rodents reaches one-level moth erosion standard; By in the cable jacket material, adding the blender of environment-friendly type, increase the hardness of oversheath 9; Make its hardness reach Shao Shi more than 67, adopt the mould of best bright finish simultaneously when oversheath 9 is extruded, note protection during cooling, and apply smooth equadag coating 10 outside oversheath 9, oversheath hardness and smoothness just are greatly improved like this.
The termite-proof power cable of the protection against rodents of the foregoing description is delivered to national authority detection department detect, 3 months cable surfaces of population experiment method are not found the tangible termite vestige that bites, and reach one-level moth erosion standard.
Adopt the termite-proof power cable of protection against rodents of the foregoing description, test through Guangdong insect research institute, test standard is carried out with reference to GB/T2951, be termite moth corrosion test with test colony's method and ant nest method respectively: test colony method is according to every crowd of termite 10g (about 3600 workers, soldier ant, soldier ant quantity＜10% wherein) sample is established three repetitions, provide termite existence necessary culture medium and temperature and humidity conditions, the test period is 90 days, and cable surface there is no the indentation of termite moth erosion; The ant nest method is placed on sample in the termitarium of setting according to the quantity of the desmergate of normal every group of ant nest quantity, and necessary temperature and humidity conditions is provided, and the test period is 365 days, and cable surface moth erosion indentation reaches one-level moth erosion standard.
In addition, adopt the termite-proof power cable of protection against rodents of the foregoing description, system of laying is a direct-burried, and when the subteranean termite situation is quite serious, cable is not taked any safeguard procedures,, does not have any anomaly and takes place during 2 years in the cable operation.
As seen, the termite-proof power cable of the protection against rodents of the foregoing description is compared the termite-proof cable of common protection against rodents, has lot of advantages, and at first the termite-proof cable of ultrahigh hardness protection against rodents belongs to ep-type material, can not work the mischief to human body and environment, moreover expressing technique is simpler; On common extrusion equipment, can extrude, and the termite-proof effect of protection against rodents can not descend because of the lengthening of running time.
In sum, the termite-proof power cable of the protection against rodents of each embodiment of the utility model, owing to comprise the conductor wire core, wrapped semiconductive internal shield, conductor shield, insulating barrier, insulation screen, semi-conductive buffer water-blocking band, corrugated aluminum sheath, pitch corrosion-inhibiting coating, oversheath and the equadag coating that axially are provided with successively from inside to outside, like this, adopt ep-type material, can not work the mischief to human body and environment, expressing technique is simpler; And, adopt and contain polyethylene and the polyolefinic oversheath of ultrahigh hardness, help increasing the hardness of oversheath; Outside oversheath, apply smooth equadag coating, help improving the hardness and the smoothness of oversheath; Thereby can overcome in the prior art be detrimental to health, feature of environmental protection difference and the high defective of production cost, to realize helping health, the feature of environmental protection is good and production cost is low advantage.
It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (1)
1. termite-proof power cable of protection against rodents, it is characterized in that, the conductor wire core that comprises axial setting, axially be socketed in the wrapped semiconductive internal shield of described conductor wire core periphery, axially be socketed in the conductor shield of described wrapped semiconductive internal shield periphery, axially be socketed in the insulating barrier of described conductor shield periphery, axially be socketed in the insulation screen of described insulating barrier periphery, axially be socketed in the semi-conductive buffer water-blocking band of described insulation screen periphery, axially be socketed in the corrugated aluminum sheath of described semi-conductive buffer water-blocking band periphery, axially be socketed in the pitch corrosion-inhibiting coating of described corrugated aluminum sheath periphery, axially be socketed in the oversheath of described pitch corrosion-inhibiting coating periphery, and the equadag coating that axially is socketed in described oversheath periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202854545U CN201897996U (en) | 2010-08-09 | 2010-08-09 | Rat-proof and termite-proof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202854545U CN201897996U (en) | 2010-08-09 | 2010-08-09 | Rat-proof and termite-proof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897996U true CN201897996U (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202854545U Expired - Fee Related CN201897996U (en) | 2010-08-09 | 2010-08-09 | Rat-proof and termite-proof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575739A (en) * | 2013-10-12 | 2015-04-29 | 宁夏海洋线缆有限公司 | Mineral insulated metal sheath cable |
-
2010
- 2010-08-09 CN CN2010202854545U patent/CN201897996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575739A (en) * | 2013-10-12 | 2015-04-29 | 宁夏海洋线缆有限公司 | Mineral insulated metal sheath cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG YANGGU NEW RIHUI ELECTRIC CABLE CO., LTD. Free format text: FORMER OWNER: SHANDONG YANGGU CABLE GROUP CO., LTD. Effective date: 20111011 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111011 Address after: 252300 Yanggu, Shandong, West Lake, No. 14, Patentee after: Shandong Yanggu Xinrihui Cable Co., Ltd. Address before: 252300 Yanggu, Shandong, West Lake, No. 14, Patentee before: Shandong Yanggu Cable Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: NEXEN (YANGGU) XINRIHUI CABLE CO., LTD. Free format text: FORMER OWNER: SHANDONG YANGGU NEW RIHUI ELECTRIC CABLE CO., LTD. Effective date: 20130424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130424 Address after: 252300 Yanggu, Shandong, West Lake, No. 14, Patentee after: Nexans (Yanggu) new Hui Cable Co. Ltd. Address before: 252300 Yanggu, Shandong, West Lake, No. 14, Patentee before: Shandong Yanggu Xinrihui Cable Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20130809 |