CN103166164B - The assemble method of cable termination and the assembly for the formation of cable termination - Google Patents
The assemble method of cable termination and the assembly for the formation of cable termination Download PDFInfo
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- CN103166164B CN103166164B CN201110405640.7A CN201110405640A CN103166164B CN 103166164 B CN103166164 B CN 103166164B CN 201110405640 A CN201110405640 A CN 201110405640A CN 103166164 B CN103166164 B CN 103166164B
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Abstract
An assemble method for cable termination, comprising: coated first fluid sealant circlewise on the outer wall of stay pipe; Coated second fluid sealant circlewise on the first fluid sealant; Be set on stay pipe after shrink sleeve is expanded, second fluid sealant is by the edges cover of one end of shrinkable sleeves, and the adhesion between the second fluid sealant and shrinkable sleeves, adhesion between the first fluid sealant and the second fluid sealant are all greater than the adhesion between the first fluid sealant and stay pipe; The cable connected and terminal fitting are inserted stay pipe, and the connecting portion of cable and terminal fitting is in stay pipe; And stay pipe is extracted out from shrinkable sleeves, make shrinkable sleeves closely be coated on described cable and terminal fitting, the first fluid sealant and the second fluid sealant are sandwiched between described shrinkable sleeves and terminal fitting.A kind of assembly for the formation of cable termination is also provided.Assembly for the formation of cable termination can be prefabricated in the factory and form, at the scene installing cables terminal, thus simplifies the program of assembling cable termination.
Description
Technical field
The present invention relates to a kind of assemble method for cable being connected to the cable termination on electric equipment, particularly, relating to and a kind ofly will there is the assemble method of the cable termination of insulation protection function and the assembly for the formation of cable termination.
Background technology
The electric cable accessories comprising cable termination and transition joint is the vitals in power transmission and transformation cable line, wherein cable termination is generally applied in the junction of the electric equipments such as cable and such as generator, motor, transformer, gas-insulated switch (GIS), and transition joint is generally applied in the junction of two cables.The effect of cable termination is the electric field of dispersion cable external shield cut-off part; protection cable is not breakdown; can prevent moisture and conducting medium in operating conditions from invading insulating sleeve and contacting with the conductor part of cable further; thus can prevent from destroying cable in the insulation property of blank area, guarantee cable safe operation long-term effectively.In ultra-high-tension power transmission line, most of accident is that electric cable accessories causes, so at the quality of cable and such as joint annex, and safe and reliable very important to whole power transmission and transformation.
At present, have developed the protection that multiple technologies realize cable junction.As being that CN85109479.1 Chinese patent discloses a kind of heat-shrinkable T bush in conjunction with PUR at application number, wherein cable sealing glue and cold shrink sleeve with the use of, to increase the insulation property of cold shrink sleeve.
In the cable termination devices 200 of prior art, fluid sealant and cold shrink sleeve with the use of generally there being following two kinds of modes:
1). first fluid sealant is wound into cable joint place with filling glue, and then the rubber body of cold shrink tube is installed to fluid sealant and the outside of filling glue and cable insulation, and current fluid sealant and filling glue are mainly based on EPDM fluid sealant and filling glue.This method is installed more complicated, also higher to the operation requirements of installation personnel;
2). fluid sealant and cold shrink tube are just prefabricated into one in factory, and fluid sealant is filled in the centre of cold shrink tube rubber body and stay pipe, only stay pipe need be pumped when mounted.This method simple installation, simple to operate.But it is very high for the requirement of fluid sealant, first, fluid sealant is by the centre in advance built in cold shrink tube rubber body (silicon rubber) and stay pipe, the pressure that after receiving expansion, the cold shrink tube rubber body of (general expansion about 3 doubly) is larger, but according to the requirement of condition of work, in storage-life (2-3), fluid sealant can not infiltrate in the gap of stay pipe, more can not become dry, aging etc., also namely plasticity is little, weatherability will be got well simultaneously, but after being installed to cable junction, still require that fluid sealant has certain plasticity, to fill space, isolated air, steam etc., secondly, when installation pumps stay pipe, fluid sealant is wanted can be bonded in rubber body, not embrittlement, branch not with stay pipe is drawn out of, movement, this just requires that the adhesion between the material of fluid sealant and stay pipe (multiplex polyolefin is as PE and PP etc.) is little, but will have certain adhesion between fluid sealant and rubber body (silicon rubber), finally, the plasticiser in fluid sealant, filler etc. can not infiltrate through in rubber body and stay pipe material.
Summary of the invention
For solving above-mentioned and other technical problem of the prior art, the present invention proposes a kind of assemble method of cable termination, by selecting the fluid sealant with different performance, simplifies the program of assembling cable termination.
According to the further aspect of the present invention, also provide a kind of assembly for the formation of cable termination, utilize this assembly with simple assembling process installing cables terminal at the scene, and cable termination has good sealing and anti-electric breakdown performance.
Embodiment according to an aspect of the present invention, provides a kind of assemble method of cable termination to comprise the steps: on the outer wall of stay pipe coated first fluid sealant circlewise; Coated second fluid sealant circlewise on described first fluid sealant; Be set on described stay pipe after shrink sleeve is expanded, and described second fluid sealant is by the edges cover of one end of described shrinkable sleeves, the adhesion between wherein said second fluid sealant and described shrinkable sleeves and the adhesion between the first fluid sealant and the second fluid sealant are all greater than the adhesion between described first fluid sealant and described stay pipe; The cable be electrically connected and terminal fitting are inserted described stay pipe, and the connecting portion of wherein said cable and described terminal fitting is in described stay pipe; And described stay pipe is extracted out from described shrinkable sleeves, to make described shrinkable sleeves closely be coated on described cable and terminal fitting, and described first fluid sealant and the second fluid sealant are sandwiched between described shrinkable sleeves and described terminal fitting.
In above-mentioned assemble method, described stay pipe is made up of polyolefine material, and described first fluid sealant is organosilicon sealant, and described shrinkable sleeves is made up of silastic material or ethylene-propylene rubber material, and described second fluid sealant is made up of polyolefin elastomer.
In above-mentioned assemble method, described polyolefin elastomer is at least one in ethylene propylene diene rubber and butyl rubber.
In above-mentioned assemble method, described second fluid sealant is coated on the roughly centre position of described first fluid sealant, and the width of described second fluid sealant on the axial direction of described cable termination is less than the width of described first fluid sealant on the axial direction of described cable termination.
In above-mentioned assemble method, the described width of described first fluid sealant is generally 3-6 centimetre, and the described width of described second fluid sealant is than the narrow 0.5-1cm of the first fluid sealant.
In above-mentioned assemble method, stay pipe is helical stay pipe, and comprises the bracing wire extending to the other end from one end of described helical stay pipe, with by pulling described bracing wire that described helical stay pipe is pulled out described shrinkable sleeves.
According to the embodiment of the further aspect of the present invention, a kind of assembly for the formation of cable termination is provided, comprises: the stay pipe of helix, comprise relative first end and the second end and extend to the bracing wire of the second end from described first end; First fluid sealant, contiguous described second end is bonded in the periphery of described stay pipe circlewise; Second fluid sealant, is coated on the periphery of described first fluid sealant circlewise; And shrinkable sleeves, the first end of described stay pipe inserts in described shrinkable sleeves, and described second fluid sealant is by the edges cover of one end of described shrinkable sleeves; Wherein, the adhesion between described second fluid sealant and described shrinkable sleeves and the adhesion between the first fluid sealant and the second fluid sealant are all greater than the adhesion between described first fluid sealant and described stay pipe.
Above-mentioned for the formation of in the assembly of cable termination, described stay pipe is made up of polyolefin, described first fluid sealant is organosilicon sealant, and described shrinkable sleeves is made up of silastic material or ethylene-propylene rubber material, and described second fluid sealant is made up of polyolefin elastomer.
Above-mentioned for the formation of in the assembly of cable termination, described polyolefin elastomer is at least one in ethylene propylene diene rubber and butyl rubber.
Above-mentioned for the formation of in the assembly of cable termination, the width of described second fluid sealant on the axial direction of described cable termination is less than the width of described first fluid sealant on the axial direction of described cable termination.
Above-mentioned for the formation of in the assembly of cable termination, the described width of described first fluid sealant is for being generally 3-6 centimetre, and the described width of described second fluid sealant is than the narrow 0.5-1cm of the first fluid sealant.
According to the assemble method of cable termination and the assembly for the formation of cable termination of above-mentioned various embodiment of the present invention, utilize the organosilicon sealant as the first fluid sealant and the difference of polyolefin elastomer fluid sealant in plasticity, plasticiser, thixotropy as the second fluid sealant, and to the shrinkable sleeves be made up of silastic material and the difference of the adhesion of stay pipe be made up of polyolefine material, both are combined and is applied to the sealing of cable termination.Assembly for the formation of cable termination can be prefabricated in the factory and form, and is assembled into cable termination at the scene with cable and terminal fitting, thus simplifies the program of assembling cable termination, makes cable termination have good sealing and anti-electric breakdown performance.
In order to make object of the present invention, feature and advantage more become apparent, below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the schematic sectional view of the cable termination made for the formation of the assembly of cable termination utilized according to exemplary embodiment of the present invention;
Fig. 2 is the close-up schematic view of part A in Fig. 1;
Fig. 3 is the schematic diagram of the embodiment of the stay pipe used in the assemble method process of cable termination according to the present invention;
Fig. 4 is the schematic diagram on stay pipe after coated two kinds of fluid sealants;
Fig. 5 is the cut-away view of the assembly for the formation of cable termination according to exemplary embodiment of the present invention;
Fig. 6 is the enlarged diagram of part B in Fig. 5;
Insulating sleeve in Fig. 5 and two-layer fluid sealant are installed to the partial sectional view after cable and terminal fitting by Fig. 7.
Embodiment
Although fully describe the present invention with reference to the accompanying drawing containing preferred embodiment of the present invention, before this describes, should be appreciated that those of ordinary skill in the art can revise invention described herein, obtain technique effect of the present invention simultaneously.Therefore, Yan Weiyi discloses widely to those of ordinary skill in the art must to understand above description, and its content does not lie in restriction exemplary embodiment described in the invention.Reference numeral identical in accompanying drawing represents identical part.
Fig. 1 is the simplified cross-sectional views of the cable termination 100 according to exemplary embodiment of the present invention, is used for the cable 1 of carrying such as more than 10 kilovolts voltages by High-Voltage Electrical Appliances equipment connection (not shown) such as terminal fitting 2 and such as generator, motor, transformer, gas-insulated switchs (GIS) according to cable termination of the present invention.See Fig. 1 and 2, the cable termination 100 made for the formation of the assembly of cable termination of exemplary embodiment of the present invention is utilized to comprise: cable 1, has conductive core line part 11; Terminal fitting 2, for being connected to electric equipment, by conductive core line part 11 being inserted the connecting hole 21 of terminal fitting 2, terminal fitting 2 is electrically connected with cable 1; Such as there is the shrinkable sleeves 3 of shrinkage, shrinkable sleeves 3 is made closely to be coated in a part for cable 1 and a part for terminal fitting 2 by utilizing stay pipe 4 (will be further described below), the connecting portion of cable 1 and terminal fitting 2 in shrinkable sleeves 3, to protect described connecting portion; First fluid sealant 5, is bonded in the periphery of terminal fitting 2 circlewise; And second fluid sealant 6, be coated on the periphery of the first fluid sealant 5 circlewise, and by the edges cover of one end of shrinkable sleeves 3, such as, cover completely.The radial umbrella skirt construction 31 extended integratedly is arranged with at the outer of shrinkable sleeves 3.
As shown in Figure 5, embodiment according to an aspect of the present invention, a kind of assembly for the formation of cable termination 100 is provided, comprises: the stay pipe 4 of helix, comprise relative first end and the second end and extend to the bracing wire 41 of the second end from described first end; First fluid sealant 5, contiguous described second end is bonded in the periphery of stay pipe 4 circlewise; Second fluid sealant 6, is coated on the periphery of the first fluid sealant 5 circlewise; And shrinkable sleeves 3, the first end of stay pipe 4 inserts in shrinkable sleeves 3, and the second fluid sealant 6 is by the edges cover of one end of shrinkable sleeves 4.In cable termination 100 of the present invention, the adhesion between the second fluid sealant 6 and shrinkable sleeves 3 and the adhesion between the first fluid sealant 5 and the second fluid sealant 6 are all greater than the adhesion between the first fluid sealant 5 and stay pipe 4.
As Fig. 3 shows a kind of exemplary embodiment of stay pipe 4, this stay pipe 4 is helical stay pipe, this helical stay pipe utilizes PE or PP to make by being wound in helix tube as the banded support bar of material, and comprise the bracing wire 41 extending to the second end from the first end of helical stay pipe, by pulling bracing wire 41 at the second end, this helical stay pipe can be made to free successively from first end and become linear structure, and finally make helical stay pipe disappear completely.
The assemble method of cable termination 100 is according to an embodiment of the present described referring to Fig. 4-7 and 1.This assemble method comprises the steps: as shown in Figure 4, and on the outer wall of stay pipe 4, coated one deck has the first fluid sealant 5 of one fixed width and thickness circlewise; Coated second fluid sealant 6 circlewise on the first fluid sealant 5; As shown in Figure 5, stay pipe 4 is inserted shrinkable sleeves 3, and as shown in Figure 6, the second fluid sealant 5 is covered completely by the edge of one end of shrinkable sleeves 3.Generally speaking, the diameter of stay pipe 4 is greater than shrinkable sleeves 3 diameter in its natural state, like this, due to the rigid support power of stay pipe 4 and the elasticity expandable characteristics of shrinkable sleeves 3, under the state that stay pipe 4 inserts shrinkable sleeves 3, shrinkable sleeves 3 is in elastic dilatation state.That is, shrinkable sleeves 3 is closely coated on stay pipe 4, and the first fluid sealant 5 is attached to the periphery of stay pipe 4, and the second fluid sealant 6 sticks on the inwall of shrinkable sleeves 3 adjacent one end.
Afterwards, as shown in Figure 7, the cable 1 be electrically connected and terminal fitting 2 are inserted stay pipe 4, wherein makes the connecting portion of cable 1 and terminal fitting 2 in stay pipe, and the one end being stained with the shrinkable sleeves 3 of the second fluid sealant 6 is positioned at the precalculated position of the outside of terminal fitting 2; Afterwards, by pulling the bracing wire 41 of stay pipe 4 to extract stay pipe 4 out from shrinkable sleeves 3, even if the stay pipe of helix 4 fades away and becomes linear structure.Along with stay pipe 4 is extracted out from shrinkable sleeves 3, or fade away along with the stay pipe 4 of helix, shrinkable sleeves 3 is recovered due to elasticity and is closely coated on gradually on cable 1 and terminal fitting 2.
Because the adhesion between the second fluid sealant 6 and shrinkable sleeves 3 and the adhesion between the first fluid sealant 5 and the second fluid sealant 6 are all greater than the adhesion between the first fluid sealant 5 and stay pipe 4, in the process pulling stay pipe 4, first fluid sealant 5 will depart from stay pipe 4, and finally make the first fluid sealant 5 and the second fluid sealant 6 be sandwiched between shrinkable sleeves 3 and terminal fitting 2, thus form cable termination of the present invention 100 as shown in Figure 1.First fluid sealant 5 and the second fluid sealant 6 can prevent moisture and conducting medium in operating conditions from invading the shrinkable sleeves 3 of insulation and contacting with the conductive core line part 11 of cable further, thus the insulation property destroying the coupling part of cable 1 between terminal fitting 2 can be prevented, guarantee cable 1 safe operation long-term effectively.
According to the further embodiment of cable termination 100 of the present invention and assemble method thereof, stay pipe 3 is made up of polyolefine material, first fluid sealant 5 is organosilicon sealant, and shrinkable sleeves 3 is made up of silastic material or ethylene-propylene rubber material, and the second fluid sealant 6 is made up of polyolefin elastomer.Further, polyolefin elastomer is at least one in ethylene propylene diene rubber and butyl rubber.But the present invention is not limited thereto, above-mentioned various part also can be made up of other material, as long as these materials can ensure that the adhesion between the second fluid sealant 6 and shrinkable sleeves 3 and the adhesion between the first fluid sealant 5 and the second fluid sealant 6 are all greater than the adhesion between the first fluid sealant 5 and stay pipe 4.
According to further embodiment of the present invention, second fluid sealant 6 is coated on the roughly centre position of the first fluid sealant 5, and the width of the second fluid sealant 6 on the axial direction of cable termination 100 is less than the width of the first fluid sealant 5 on the axial direction of cable termination 100, like this, in the process of assembling cable termination 100 of the present invention, can guarantee that the second fluid sealant 6 can not contact with stay pipe 4.In a kind of exemplary embodiment, the described width of described first fluid sealant is 3-6 centimetre, and the described width of described second fluid sealant is than the narrow 0.5-1 centimetre of the first fluid sealant.
According to the above-mentioned various embodiment of cable termination 100 of the present invention and assemble method thereof, utilize the organosilicon sealant as the first fluid sealant 5 and the difference of polyolefin elastomer fluid sealant in plasticity, plasticiser, thixotropy as the second fluid sealant 6, and to the shrinkable sleeves 3 be made up of silastic material and the difference of the adhesion of stay pipe be made up of polyolefine material, both are combined and is applied to the sealing of cable termination 100.The adhesion of organosilicon sealant to the stay pipe 4 be made up of polyolefine material is very little, and has stronger adhesion by polyolefin elastomer fluid sealant to shrinkage shrinkable sleeves 3.Like this, the organosilicon sealant of coated one fixed width and thickness on the ad-hoc location of stay pipe 4, the polyolefinic fluid sealant that coated one deck width is slightly little on organosilicon sealant again, finally shrinkable sleeves 3 being expanded to is coated with on the stay pipe 4 of two-layer fluid sealant, afterwards, only stay pipe 4 need be pumped, just shrinkage shrinkable sleeves 3 and two-layer fluid sealant can be installed to the junction of cable 1 and terminal fitting 2 simultaneously.
It will be appreciated by those skilled in the art that, embodiment described above is all exemplary, and those skilled in the art can make improvements, independent assortment can be carried out when the conflict of the structure described in various embodiment in not recurring structure or principle, thus on the basis solving technical problem of the present invention, realize more kinds of cable termination 100 and assemble method thereof.
After detailed description preferred embodiment of the present invention; those of ordinary skill in the art can clearly understand; various change and change can be carried out under the protection range not departing from claim of enclosing and spirit, and the present invention is not also limited to the execution mode of examples cited embodiment in specification.
Claims (11)
1. an assemble method for cable termination, comprises the steps:
Coated first fluid sealant (5) circlewise on the outer wall of stay pipe (4);
Coated second fluid sealant (6) circlewise on described first fluid sealant;
Be set on described stay pipe after shrinkable sleeves (3) is expanded, and described second fluid sealant is by the edges cover of described shrinkable sleeves one end, the adhesion between wherein said second fluid sealant and described shrinkable sleeves and the adhesion between the first fluid sealant and the second fluid sealant are all greater than the adhesion between described first fluid sealant and described stay pipe;
The cable connected (1) and terminal fitting (2) are inserted described stay pipe, and the connecting portion of wherein said cable and described terminal fitting is in described stay pipe; And described stay pipe is extracted out from described shrinkable sleeves, to make described shrinkable sleeves closely be coated on described cable and terminal fitting, and described first fluid sealant and the second fluid sealant are sandwiched between described shrinkable sleeves and described terminal fitting.
2. assemble method as claimed in claim 1, wherein, described stay pipe is made up of polyolefin, and described first fluid sealant is organosilicon sealant, described shrinkable sleeves is made up of silastic material or ethylene-propylene rubber material, and described second fluid sealant is made up of polyolefin elastomer.
3. assemble method as claimed in claim 2, wherein, described polyolefin elastomer is at least one in ethylene propylene diene rubber and butyl rubber.
4. the assemble method as described in any one in claim 1-3, wherein, described second fluid sealant is coated on the roughly centre position of described first fluid sealant, and the width of described second fluid sealant on the axial direction of described cable termination is less than the width of described first fluid sealant on the axial direction of described cable termination.
5. assemble method as claimed in claim 4, wherein, the described width of described first fluid sealant is 3-6 centimetre, and the described width of described second fluid sealant is than the narrow 0.5-1cm of the first fluid sealant.
6. the assemble method as described in any one in claim 1-3, wherein, stay pipe is helical stay pipe, and comprise the bracing wire (41) extending to the other end from one end of described helical stay pipe, with by pulling described bracing wire to be pulled out from described shrinkable sleeves by described helical stay pipe.
7., for the formation of an assembly for cable termination, comprising:
The stay pipe (4) of helix, comprises relative first end and the second end and extends to the bracing wire (41) of the second end from described first end;
First fluid sealant (5), contiguous described second end is bonded in the periphery of described stay pipe circlewise;
Second fluid sealant (6), is coated on the periphery of described first fluid sealant circlewise; And
Shrinkable sleeves (3), the first end of described stay pipe inserts in described shrinkable sleeves, and described second fluid sealant is by the edges cover of one end of described shrinkable sleeves;
Wherein, the adhesion between described second fluid sealant and described shrinkable sleeves and the adhesion between the first fluid sealant and the second fluid sealant are all greater than the adhesion between described first fluid sealant and described stay pipe.
8. as claimed in claim 7 for the formation of the assembly of cable termination, wherein, described stay pipe is made up of polyolefin, and described first fluid sealant is organosilicon sealant, described shrinkable sleeves is made up of silastic material or ethylene-propylene rubber material, and described second fluid sealant is made up of polyolefin elastomer.
9. as claimed in claim 8 for the formation of the assembly of cable termination, wherein, described polyolefin elastomer is at least one in ethylene propylene diene rubber and butyl rubber.
10. the assembly for the formation of cable termination as described in any one in claim 7-9, wherein, the width of described second fluid sealant on the axial direction of described cable termination is less than the width of described first fluid sealant on the axial direction of described cable termination.
11. as claimed in claim 10 for the formation of the assemblies of cable termination, and wherein, the described width of described first fluid sealant is 3-6 centimetre, and the described width of described second fluid sealant is than the narrow 0.5-1cm of the first fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110405640.7A CN103166164B (en) | 2011-12-08 | 2011-12-08 | The assemble method of cable termination and the assembly for the formation of cable termination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110405640.7A CN103166164B (en) | 2011-12-08 | 2011-12-08 | The assemble method of cable termination and the assembly for the formation of cable termination |
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| CN103166164A CN103166164A (en) | 2013-06-19 |
| CN103166164B true CN103166164B (en) | 2016-03-09 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104201622B (en) * | 2014-09-11 | 2017-09-01 | 江苏安靠智能输电工程科技股份有限公司 | A kind of prefabricated class intermediate joint of electric cable erecting device and method |
| CN104967084A (en) * | 2015-05-19 | 2015-10-07 | 江苏中煤电缆有限公司 | Degaussing cable connector |
| CN106300214B (en) * | 2015-05-19 | 2019-03-19 | 泰科电子(上海)有限公司 | Cold-contraction type cable termination, cold-contraction type terminal assembly and the method for terminating cable |
| CN107317272B (en) * | 2017-05-31 | 2020-06-16 | 中铁十二局集团有限公司 | Mineral insulated cable factory pre-preparation processing method based on BIM technology |
| KR102589064B1 (en) * | 2018-03-29 | 2023-10-12 | 엘에스전선 주식회사 | Termination box of power cable |
| CN111952900B (en) * | 2020-08-13 | 2022-01-21 | 国网河南省电力公司平顶山供电公司 | Cable termination safety dismounting device |
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| CN103166164A (en) | 2013-06-19 |
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