CN1710766A - Prefabricated dry-type capacity type cable terminal - Google Patents
Prefabricated dry-type capacity type cable terminal Download PDFInfo
- Publication number
- CN1710766A CN1710766A CN 200410020769 CN200410020769A CN1710766A CN 1710766 A CN1710766 A CN 1710766A CN 200410020769 CN200410020769 CN 200410020769 CN 200410020769 A CN200410020769 A CN 200410020769A CN 1710766 A CN1710766 A CN 1710766A
- Authority
- CN
- China
- Prior art keywords
- insulation
- capacitor type
- grading shield
- conducting rod
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention is related to cable end of cross-linked polyethylene insulated cable in use for voltage class higher than 66kV. The invention developed is to solve difficulties in existed techniques for wrapping and detecting main insulation of cable end in dry type capacitance mode. The invention includes connection terminal, grading shield and conduction pole, insulation in capacitance mode and spacer flange etc. Insulation in capacitance mode is inside tube of synthetic rubber sheathed by rigid insulating cylinder wrapped by plastic insulation tape. Spacer flange is installed on rigid insulating cylinder fixedly. The grading shield connected to the spacer flange is installed on conduction pole. Innermost shield of insulation is equipotential connected to grading shield, conduction pole and spacer flange. Insulating sheath is outside insulation. Advantages are: dry production, no oil, no gas, free from maintenance basically, fabricating and testing steps in factory.
Description
Technical field
The invention belongs to the High-Voltage Electrical Appliances field, particularly a kind of cross-linked polyethylene insulated cable terminal that is used for 66kV and above electric pressure.
Background technology
At present, the cable termination in the high-voltage electric power system of 66kV and above electric pressure has two big classes, and a class is the cable termination of utilization stress cone structure, and another kind of is the cable termination of utilization capacitor type structure.Wherein last class cable termination accounts for main flow in electric power system, back one class cable termination also occupies certain market in electric power system.Self there are some shortcomings in the cable termination of stress cone structure: (1) cost height; (2) in case stress cone damages, cable breakdown will take place, cause circuit to be in paralysis, and cause fire and blast; (3) easy oil impregnate, maintenance workload is big.Have a kind of dry type capacitor type cable termination more and more to be subjected to user's welcome on the market now, its structure is for directly to pack capacitor type insulating with the plastic insulation band on cable is crosslinked polyetylene insulated.This cable termination cost is low, and insulation margin is big, and Electric Field Distribution is reasonable, is dry construction simultaneously, does not have oil, no porcelain, no gas, and is non-maintaining substantially.But this cable termination also has weak point: because the plastic insulation band directly packs on cable is crosslinked polyetylene insulated, and the flexing resistance of cable termination is bad, capacitor type insulating damages easily (1); (2) main insulation packs and need carry out at the construction field (site), and operating environment is poor, and can not pack with lathe in factory, and product quality is difficult to guarantee; (3) after the main insulation scene packs, detection difficult; (4) this cable termination can only be used for air, and can not be used in transformer oil or the GIS combined electrical apparatus.
Summary of the invention
The purpose of this invention is to provide a kind of that be prefabricated in the factory, performance can detect, anti-bending strength is good, can be used for also can be used in the air in the transformer oil into or advance pre-fabricated dry capacitor type cable termination in the GIS combined electrical apparatus.
The object of the present invention is achieved like this: it comprises binding post, grading shield, conducting rod etc., suit rigid insulation tube outside synthetic rubber tube, the capacitor type insulating that useful plastic insulation band packs outside the rigid insulation tube, counter flange is fixed on the rigid insulation tube, grading shield is connected with counter flange, grading shield is contained on the conducting rod, last end seal places between conducting rod and the counter flange, binding post is fixed on the conducting rod, and the interior screen of capacitor type insulating is connected with grading shield, conducting rod, counter flange equipotential.In order to protect capacitor type insulating, insulating sleeve is arranged outside capacitor type insulating.When being sleeved on pre-fabricated dry capacitor type cable termination on the cable, earlier the oversheath of cable body is pulled down, remove the outer semi-conductive layer of cable main insulation crosslinked polyethylene, the crosslinked polyethylene surface finish is smooth, guarantee that cable main insulation outside dimension meets the requirements, be sleeved on the cable with draw-gear guiding pre-fabricated dry capacitor type cable termination, making between synthetic rubber inside pipe wall and the cable main insulation does not have air gap, at the two ends up and down of cable termination sealing device is arranged.This pre-fabricated dry capacitor type cable termination can carry out pre-assembled and carry out Performance Detection in factory.It has following advantage:
(1) dry type product does not have oil, no gas, and is non-maintaining substantially;
(2) cable termination adopts the capacitor type insulating structure, and Electric Field Distribution is reasonable, and insulation margin is big, and cost is low;
(3) can realize production plantization, mass, product quality is easy to guarantee;
(4) can detect in factory, the cable termination that packs is sleeved on the satisfactory cable of the performance two ends of corresponding specification, carry out every test, withdraw from the cable termination that packs after the pass the test, and preserve;
(5) have good anti-bending strength, adopted the rigid insulation tube after, improved the anti-bending strength of cable termination;
(6) not only can be used in the air, only need to adjust capacitor type insulating structural design and oversheath, can be used in the transformer oil again or advance in the GIS combined electrical apparatus;
Description of drawings:
Accompanying drawing is the generalized section of a kind of structure of the present invention.
Embodiment:
Below the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Synthetic rubber tube 7 outer suit rigid insulation tubes 6, the capacitor type insulating 8 that useful plastic insulation band packs outside rigid insulation tube 6, counter flange 5 is fixed on the rigid insulation tube 6, grading shield 2 is connected with counter flange 5, grading shield 2 is contained on the conducting rod 4, and last end seal 3 places between conducting rod 4 and the counter flange 5, and binding post 1 is fixed on the conducting rod 4, capacitor type insulating 8 interior screens are connected with grading shield 2, conducting rod 4, counter flange 5 equipotentials, and insulating sleeve 9 is arranged outside the capacitor type insulating 8.During use, with conducting rod 4 and cable core 13 crimping, capacitor type insulating 8 outermosts screen is connected with insulation shield layer 11 equipotential, cable insulation 12 smooth outer surfaces, be cylinder, outside dimension meets the requirements, be sleeved on the cable insulation 12 with draw-gear guiding pre-fabricated dry capacitor type cable termination during assembling, synthetic rubber tube 7 is combined with cable insulation 12 closely, between do not have air gap, rigid insulation tube 6 is set on synthetic rubber tube 7 outsides, and making between rigid insulation tube 6 and synthetic rubber tube 7 outsides does not have air gap.In the lower end of rigid insulation tube 6 seal 10 is arranged.This kind structural cable terminal can be used in the air.
Claims (2)
1. pre-fabricated dry capacitor type cable termination, comprise binding post (1), grading shield (2), conducting rod (4), it is characterized in that: synthetic rubber tube (7) outer suit rigid insulation tube (6), the capacitor type insulating (8) that useful plastic insulation band packs outside rigid insulation tube (6), counter flange (5) is fixed on the rigid insulation tube (6), grading shield (2) is connected with counter flange (5), grading shield (2) is contained on the conducting rod (4), last end seal (3) places between conducting rod (4) and the counter flange (5), binding post (1) is fixed on the conducting rod (4), capacitor type insulating (8) interior screen and grading shield (2), conducting rod (4), counter flange (5) equipotential connects.
2. according to the described a kind of pre-fabricated dry capacitor type cable termination of claim 1, it is characterized in that: insulating sleeve (9) is arranged outside the capacitor type insulating (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020769 CN1710766A (en) | 2004-06-16 | 2004-06-16 | Prefabricated dry-type capacity type cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020769 CN1710766A (en) | 2004-06-16 | 2004-06-16 | Prefabricated dry-type capacity type cable terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1710766A true CN1710766A (en) | 2005-12-21 |
Family
ID=35706962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020769 Pending CN1710766A (en) | 2004-06-16 | 2004-06-16 | Prefabricated dry-type capacity type cable terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1710766A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090824A1 (en) * | 2014-12-08 | 2016-06-16 | 北京瑞恒新源投资有限公司 | Capacitance-type cable terminal without filled insulation medium |
| CN106997798A (en) * | 2016-01-26 | 2017-08-01 | 北京天威瑞恒高压套管有限公司 | Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling |
| CN108918921A (en) * | 2018-08-06 | 2018-11-30 | 河海大学 | A kind of 220kV submarine cable GIS terminal pressure resistance ancillary equipment |
| CN111327013A (en) * | 2018-12-14 | 2020-06-23 | 香港浩岳国际有限公司 | Cable terminal |
-
2004
- 2004-06-16 CN CN 200410020769 patent/CN1710766A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090824A1 (en) * | 2014-12-08 | 2016-06-16 | 北京瑞恒新源投资有限公司 | Capacitance-type cable terminal without filled insulation medium |
| CN106997798A (en) * | 2016-01-26 | 2017-08-01 | 北京天威瑞恒高压套管有限公司 | Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling |
| CN108918921A (en) * | 2018-08-06 | 2018-11-30 | 河海大学 | A kind of 220kV submarine cable GIS terminal pressure resistance ancillary equipment |
| CN108918921B (en) * | 2018-08-06 | 2020-07-17 | 河海大学 | Withstand voltage auxiliary assembly of 220kV submarine cable GIS terminal |
| CN111327013A (en) * | 2018-12-14 | 2020-06-23 | 香港浩岳国际有限公司 | Cable terminal |
| CN111327013B (en) * | 2018-12-14 | 2021-06-04 | 香港浩岳国际有限公司 | Cable terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101339824A (en) | Composite insulating tube type bus and method for preparing the same | |
| CN205724746U (en) | A kind of gas-insulating type wall bushing for extra-high voltage direct-current engineering | |
| CN106469594B (en) | Bushing shell for transformer | |
| CN201075653Y (en) | Dry type outdoor cable terminal | |
| CN201146328Y (en) | New type insulated bus connecting pipe | |
| CN1649037A (en) | Capacity voltage equalizing dry insulation bus and terminal connection protector | |
| CN1710766A (en) | Prefabricated dry-type capacity type cable terminal | |
| CN205304157U (en) | Dry type high -pressure wall bushing | |
| CN2701137Y (en) | A prefabricated dry capacitor type cable termination | |
| CN201860065U (en) | Glue-impregnated capacitance type direct-current wall bushing | |
| CN201751959U (en) | Novel dry-type high-voltage sleeve | |
| CN106054044A (en) | Insulation test device for gas filled tank | |
| CN201812954U (en) | Novel dry capacitor type insulation wire outlet sleeve pipe | |
| CN2583773Y (en) | Dry high voltage casing | |
| CN107565501A (en) | The implementation method at high-performance polypropylene/silicon rubber interface in cable connector | |
| CN2664249Y (en) | A prefabricated dry capacitor type cable termination | |
| CN212162114U (en) | Pre-branch cable | |
| CN210669491U (en) | Cable terminal with large capacitance | |
| CN207268981U (en) | A kind of new structure gas-insulated transformer casing | |
| CN209624704U (en) | A kind of condenser type sleeve of test transformer structure | |
| CN114640070A (en) | Closed combined casing | |
| CN201444171U (en) | Wall bushing mounting voltage transducer | |
| CN200997333Y (en) | Dry high-voltage current mutual inductor of capacitant insulating | |
| CN220672378U (en) | High-integration combined electrical appliance | |
| CN2497415Y (en) | Dry-type high-voltage current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |