CN201758269U - Cable accessory for electrified railway - Google Patents
Cable accessory for electrified railway Download PDFInfo
- Publication number
- CN201758269U CN201758269U CN2010205017345U CN201020501734U CN201758269U CN 201758269 U CN201758269 U CN 201758269U CN 2010205017345 U CN2010205017345 U CN 2010205017345U CN 201020501734 U CN201020501734 U CN 201020501734U CN 201758269 U CN201758269 U CN 201758269U
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- cable
- terminal
- shrinkage
- cold shrinkable
- protecting pipe
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Abstract
The utility model provides a cable accessory for an electrified railway, which comprises a cable and a cable terminal accessory. The cable accessory is characterized in that a wire core, an insulating layer, an outer semiconductor layer, a copper shield layer and an outer sheath are sequentially exposed at the stripped tail end of the cable, the cable terminal accessory includes a cold shrinkable sheath tube, a constant-force spring, a stress cone, a cold shrinkable terminal head, a seal tube and a terminal, the cold shrinkable sheath tube is installed on the copper shield layer from a break to the outer side of a local section of the outer sheath, the constant-force spring tightly clamps a ground wire, the cold shrinkable terminal head is installed on outer sides of local sections of the outer semiconductor layer and the wire core insulating layer close to a break of the outer semiconductor layer, the root of the cold shrinkable terminal head is sleeved with the top of the cold shrinkable sheath tube, and the seal tube is sleeved to the outer side of an adjacent portion of the cold shrinkable terminal to the terminal. The cable accessory has the advantages of convenient installation, no oil, explosion prevention, small volume, low weight, easy maintenance and the like.
Description
Technical field
The utility model relates to electric cable accessories, relates in particular to 27.5/48kV railway private cable annex.
Background technology
Make a general survey of countries in the world railway development history, the flourish of electric railway has been inexorable trend, expects 2015, and the countries and regions of building high-speed electric railway in the world will reach 23, and the high-speed electric railway mileage will be broken through 30000km.Till that time, the electric railway mileage of China will only be positioned at after the Russia, leap to the second place of the world.And all will enter world's rank of advanced units at the aspects such as railway transporting amount proportion, electric railway technical equipment and train running speed that electrization rate, electrified complex line rate, electric railway are born.Electric railway rated voltage 27.5kV electric cable accessories product of the present utility model, it is used on the defeated modified line road in the electric railway of 27.5/48kV electric pressure, being the cold-contraction type product, is material with the extraordinary high quality silicon rubber of high resiliency, adopts import equipment to annotate the rubber moulding.Product is easy for installation, and function admirable is applicable to the heavy pollution area.
The utility model content
In order to solve the problems of the prior art, the utility model provides a kind of electric railway electric cable accessories.
A kind of electric railway electric cable accessories, comprise cable and cable termination annex, the end of described cable is opened stripping and is exposed core, insulating barrier, outer semiconductive layer, copper shield, oversheath successively, described cable termination annex comprises shrinkage protecting pipe, constant force spring, stress cone, shrinkage terminals, sealed tube, terminal, and described shrinkage protecting pipe is installed on copper shield outside incision position plays, arrives the oversheath local segment; Described constant force spring tightens earth connection; Described shrinkage terminals are installed on outside outer semiconductive layer, the local segment of core insulating barrier near outer semiconductive layer fracture, the top socket of its root and shrinkage protecting pipe; Described sealed tube is loaded on shrinkage terminal and the terminal outside in abutting connection with the position.
As further improvement of the utility model, described stress cone and insulating cement are combined into one.
As further improvement of the utility model, the material of described terminal is a copper, is coated with one deck silver on the surface.
As further improvement of the utility model, described shrinkage protecting pipe struts in elastic range in advance, is inserted in support bar and adds fixing.
The beneficial effects of the utility model are:
1. the import silicon rubber selected for use of annex has high strength, high resiliency, anti-corona, the trace of anti-leakage the, advantage such as ageing-resistant, has guaranteed the high-quality of product and the reliability of long-time running; Be applicable to the heavy pollution area.
2. conductive silicon rubber stress cone that the annex insulation is inner compound, Stress Control is not subjected to the influence of system frequency variation, has improved the Electric Field Distribution of cable shield cut-off part reliably.
3. provide constant lasting radial pressure to cable body all the time after installing, partial discharge quantity is little, with cable body same " breathing ".
4. have easy for installation, characteristics such as nothing is oily, explosion-proof, volume is little, in light weight, easy care.
Description of drawings
Fig. 1 is single core indoor (outward) the crosslinked cable terminals stripping of the full shrinkage of the utility model 27.5/48kV figure;
Fig. 2 is the utility model cable termination annex outdoor terminal decomposing schematic representation;
Fig. 3 is single core indoor (outward) the crosslinked cable terminals mounted configuration of the full shrinkage of a utility model schematic diagram;
Fig. 4 is the utility model stress cone and terminal body structure for amplifying schematic diagram.
Each component names is as follows among the figure:
Oversheath 1, copper shield 2, outer semiconductive layer 3, insulating barrier 4, core 5, shrinkage protecting pipe 101, stress cone 102, terminal body 103, sealed tube 104, terminal 106, cluster parachute 107, constant force spring 108, shrinkage terminals 109, location phase colour band 201, filling glue 202, ground wire 203, elastic sealant 204.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further specified.
Full cold-shrink technology claims the predilation technology again, is about to strut in advance in the elastic caoutchouc elastic range, is inserted in support bar and adds fixing.During installation, only need the plastic support bar is taken out, elastomer just shrink rapidly and lock ring on cable body.The utility model is full shrinkage terminals, and its stress cone material adopts liquid partly to lead type silicon rubber, and the dielectric constant of this material, dielectric strength, insulation resistance and dielectric dissipation factor maintain a long-term stability.
Electric field stress disperses to adopt geometrical stress awl control (as Fig. 4), and stress cone structure Electric Field Distribution adopts Finite Element optimization.Stress cone and insulating cement are combined into one, and by this kind stress control method, make cable termination external insulation Electric Field Distribution be tending towards dispersing, evenly, thereby improve the discharge voltage of external insulation.
The technical scheme that the utility model adopted is: propose a kind of full shrinkage cable termination, comprise cable (as Fig. 1), cable termination annex, the end of described cable is opened stripping and is exposed core 5, insulating barrier 4, outer semiconductive layer 3, copper shield 2, oversheath 1 successively, described cable termination annex comprises shrinkage protecting pipe 101, constant force spring 108, stress cone 102, shrinkage terminals 109, sealed tube 104, terminal 106, and described shrinkage protecting pipe is installed on copper shield outside incision position plays, arrives the oversheath local segment; Described constant force spring tightens earth connection, makes contacting with copper shield that it can be good, guarantees the ground connection effect; Described stress cone and insulating cement are combined into one, and electric field stress distribute to adopt Finite Element optimization, and stress control method adopts geometric method control, make cable termination external insulation Electric Field Distribution be tending towards dispersing, evenly, thereby improve the discharge voltage of external insulation; Described shrinkage terminals are installed on outside outer semiconductive layer, the local segment of core insulating barrier near outer semiconductive layer fracture, the top socket of its root and shrinkage protecting pipe; Described sealed tube is loaded on shrinkage terminal and the terminal outside in abutting connection with the position; The material of affiliated terminal is a copper, is coated with one deck silver on the surface, can strengthen its conductive capability, also makes it be not easy corrosion (as Fig. 2, Fig. 3).
27.5/48kV full shrinkage single-core crosslinked cable terminal mounting process is as follows:
1. preliminary treatment cable
By the stripping dimensional drawing, (measure 500-550mm, L: the terminal hole depth) peel off cable jacket, the sheath fracture up keeps the 70-75mm copper shield, and outer semiconductive layer keeps 30-35mm, presses drawing excision top main insulation earlier.The semiconductive layer incision position is cut out 45 degree grooves with cutter outside, and adjacent port twines 3 layers of PVC tape on insulating barrier, with sand paper groove is polished smooth, and takes off PVC tape.
2. installation earth connection
Ground wire one end is twined one week of copper shield, tighten ground wire, and on constant force spring, twine 3 layers of PVC tape, guarantee that spring can not get loose with constant force spring.
3. wrapped filling glue and fluid sealant
One deck elastic sealant is twined at about 35-40mm place below constant force spring, and above ground wire is positioned over, and then winding one deck elastic sealant covers above the earth connection.On constant force spring, twine two-layer PVC tape, guarantee that spring can not get loose.
4. the shrinkage protecting pipe is installed
Be inserted in the shrinkage protecting pipe, the upper end is concordant with copper shield, and pull plastic support bar makes it nature and shrinks counterclockwise.
5. determine the terminals reference for installation
From the semi-conductive layer fracture down, measure 60-65mm, do a sign with PVC tape, as the reference for installation of shrinkage terminals.
6. the shrinkage terminals are installed
With cable cleaning paper cleaning insulating barrier, be coated with the last layer silicone grease then.Be inserted in the shrinkage terminals and be positioned PVC sign place (base point of installation).Take out the plastic support bar counterclockwise, terminals are shunk naturally.(note: indoor terminals directly connect step 7, and outdoor termination then adds two shrinkage protecting pipes of cover: overlap joint terminals 30-35mm, be inserted in the shrinkage protecting pipe, and take out the plastic support bar counterclockwise, protecting pipe is shunk naturally.)
7. crimping conducting terminal
Crimp type terminal is filled and led up space between terminal and the main insulation with filling glue.Then, twine elastic sealant, enhanced leaktightness.
8. the shrinkage sealed tube is installed
Be inserted in the shrinkage sealed tube, extract the plastic support bar out, sealed tube is shunk naturally, install.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (5)
1. an electric railway electric cable accessories comprises cable and cable termination annex, it is characterized in that:
The end of described cable is opened stripping and is exposed core, insulating barrier, outer semiconductive layer, copper shield, oversheath successively, described cable termination annex comprises shrinkage protecting pipe, constant force spring, stress cone, shrinkage terminals, sealed tube, terminal, and described shrinkage protecting pipe is installed on copper shield outside incision position plays, arrives the oversheath local segment; Described constant force spring tightens earth connection; Described shrinkage terminals are installed on outside outer semiconductive layer, the local segment of core insulating barrier near outer semiconductive layer fracture, the top socket of its root and shrinkage protecting pipe; Described sealed tube is loaded on shrinkage terminal and the terminal outside in abutting connection with the position.
2. electric railway electric cable accessories according to claim 1 is characterized in that: described stress cone and insulating cement are combined into one.
3. electric railway electric cable accessories according to claim 1 is characterized in that: the material of described terminal is a copper, is coated with one deck silver on the surface.
4. electric railway electric cable accessories according to claim 2 is characterized in that: the material of described terminal is a copper, is coated with one deck silver on the surface.
5. according to any described electric railway electric cable accessories of claim 1 to 4, it is characterized in that: described shrinkage protecting pipe struts in elastic range in advance, is inserted in support bar and adds fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205017345U CN201758269U (en) | 2010-08-24 | 2010-08-24 | Cable accessory for electrified railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205017345U CN201758269U (en) | 2010-08-24 | 2010-08-24 | Cable accessory for electrified railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758269U true CN201758269U (en) | 2011-03-09 |
Family
ID=43645558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205017345U Expired - Lifetime CN201758269U (en) | 2010-08-24 | 2010-08-24 | Cable accessory for electrified railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758269U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868132A (en) * | 2012-09-14 | 2013-01-09 | 申环电缆科技有限公司 | Method for connecting accessory tail tube and cable corrugated aluminum sheath |
| CN103346520A (en) * | 2013-07-31 | 2013-10-09 | 国家电网公司 | Shuttle-type cable terminal |
| CN106207939A (en) * | 2016-07-25 | 2016-12-07 | 常州市拓源电缆成套有限公司 | 27500 volts of electric power outdoor cable terminals for railway |
| CN106911115A (en) * | 2017-04-17 | 2017-06-30 | 苏州鼎鑫冷热缩材料有限公司 | A kind of crosslinking with radiation thermal shrinkage type cable accessory |
| CN107994536A (en) * | 2018-01-05 | 2018-05-04 | 长园电子（东莞）有限公司 | A kind of electric railway 27.5kV pyrocondensation tags and preparation method thereof |
| CN109378790A (en) * | 2018-12-12 | 2019-02-22 | 徐州海伦哲特种车辆有限公司 | A kind of midium voltage cable attachment device component and its production application method |
-
2010
- 2010-08-24 CN CN2010205017345U patent/CN201758269U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868132A (en) * | 2012-09-14 | 2013-01-09 | 申环电缆科技有限公司 | Method for connecting accessory tail tube and cable corrugated aluminum sheath |
| CN102868132B (en) * | 2012-09-14 | 2015-07-01 | 申环电缆科技有限公司 | Method for connecting accessory tail tube and cable corrugated aluminum sheath |
| CN103346520A (en) * | 2013-07-31 | 2013-10-09 | 国家电网公司 | Shuttle-type cable terminal |
| CN106207939A (en) * | 2016-07-25 | 2016-12-07 | 常州市拓源电缆成套有限公司 | 27500 volts of electric power outdoor cable terminals for railway |
| CN106911115A (en) * | 2017-04-17 | 2017-06-30 | 苏州鼎鑫冷热缩材料有限公司 | A kind of crosslinking with radiation thermal shrinkage type cable accessory |
| CN107994536A (en) * | 2018-01-05 | 2018-05-04 | 长园电子（东莞）有限公司 | A kind of electric railway 27.5kV pyrocondensation tags and preparation method thereof |
| CN109378790A (en) * | 2018-12-12 | 2019-02-22 | 徐州海伦哲特种车辆有限公司 | A kind of midium voltage cable attachment device component and its production application method |
| CN109378790B (en) * | 2018-12-12 | 2024-03-01 | 徐州海伦哲特种车辆有限公司 | Medium-voltage cable connecting assembly and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |