CN106483413A - High voltage direct current cable dry type easily-testing terminal - Google Patents
High voltage direct current cable dry type easily-testing terminal Download PDFInfo
- Publication number
- CN106483413A CN106483413A CN201611105485.6A CN201611105485A CN106483413A CN 106483413 A CN106483413 A CN 106483413A CN 201611105485 A CN201611105485 A CN 201611105485A CN 106483413 A CN106483413 A CN 106483413A
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- CN
- China
- Prior art keywords
- direct current
- connecting rod
- high voltage
- voltage direct
- dry type
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cable Accessories (AREA)
Abstract
High voltage direct current cable dry type easily-testing terminal, is related to high voltage direct current cable system test field.At present, cannot be carried out the experimental study of complexity using the dumb terminal of cable delivery test, if install actual track terminal and needing not only to need professional to be installed but also needed higher cost.The technical program includes testing sleeve pipe, DC stress cone and spring, test sleeve pipe include insulating coating, in insulating coating the high-tension shielding electrode sleeve of middle and upper part, the fixed connecting rod located at high-tension shielding electrode sleeve center, it is provided with insulating part between insulating coating, high-tension shielding electrode sleeve and fixed connecting rod, lower insulating member center in insulating coating is provided with the jatharapanvartanasana cavity of lower ending opening, and the top and bottom of test sleeve pipe are respectively equipped with upper flange and lower flange.The technical program, without evacuation, inflation or oiling, simplifies terminal structure, decreases the set-up time, simple to operate, energy-conserving and environment-protective, thus improving work efficiency, can also reuse, and reduces experimentation cost.
Description
Technical field
The present invention relates to high voltage direct current cable system test field, more particularly, to a kind of high voltage direct current cable dry type is simple
Test terminal.
Background technology
With the rise of the generations of electricity by new energy such as wind energy, solar energy, add the restriction to aerial corridor of transmitting electricity for the modern city, soft
Property HVDC Transmission Technology also increasingly receive publicity, in addition the progress of Chinese flexible direct current commutation technique and direct current cables technology and
The successful research and development of product, China started high pressure flexible direct current transmission of electricity demonstration project construction from 2012.South electric network is built
Nan ' ao Island ± 160kV multiterminal flexible direct current engineering puts into operation in December, 2013.Zhoushan ± 200kV the multiterminal that national grid is built
Engineering puts into operation in June, 2014.Xiamen DC engineering also puts into operation in December, 2015.And direct current cables circuit and cable accessory
As the requisite part of direct current cables transmission line of electricity, the quality of its performance directly affects the fortune of whole direct current transmission and distribution system
Row reliability.Direct current cables system is product out newly developed recent years, both at home and abroad ununified measuring means pair
The electric property of direct current cables system is estimated, and most enterprises voluntarily carry out exfactory inspection before cable dispatches from the factory.For direct current
Cable product, dispatch from the factory previous as can directly on product install simple cable terminal tested, this kind of method be simulation
The actual ruuning situation of finished product, is only suitable for and conventional exfactory inspection, if the test for some complexity cannot meet requirement.
Before cable accessory products are dispatched from the factory, it is typically mounted at and is tested on the device specializing in test or simulation adnexa.This device
Or simulation adnexa provides the required electrode of test, the electric field intensity on tested prefabricated component is made to reach not less than finished cable adnexa
Specify the electric field intensity under test voltage at it.If the terminal-pair cable system developed using cable accessory factory carries out complexity
Test, not only increases the R＆D cycle but also increases experimentation cost.Dumb terminal according to cable delivery test cannot be carried out
Complicated experimental study, if install actual track terminal and needing not only to need professional to be installed but also needed higher cost.
Therefore, it is necessary to develop a set of brief test terminal meeting above-mentioned test demand.
Content of the invention
The technical problem to be solved in the present invention and the technical assignment proposing are prior art to be improved and is improved,
There is provided high voltage direct current cable dry type easily-testing terminal, to realize a series of investigation tests under the conditions of dry run as mesh
's.For this reason, the present invention takes technical scheme below.
High voltage direct current cable dry type easily-testing terminal, including test sleeve pipe, DC stress cone and spring, described survey
Examination sleeve pipe include insulating coating, in insulating coating the high-tension shielding electrode sleeve of middle and upper part, in high-tension shielding electrode sleeve
The fixed connecting rod of the heart, is provided with insulating part between described insulating coating, high-tension shielding electrode sleeve and fixed connecting rod, described
Lower insulating member center in insulating coating is provided with the jatharapanvartanasana cavity of lower ending opening, and the top and bottom of test sleeve pipe set respectively
There are dismountable upper flange and lower flange；The lower end of described fixed connecting rod is electrically connected with and is detachably connected bar, detachably connects
The lower end of extension bar is used for being connected with the core of tested direct current cables end, and described DC stress cone and spring are used for being coated at directly
The end of stream cable, is provided with the fixing bolt for holding out against spring around described lower flange centre bore.During use, will be tested straight
Stream cable insulation is simply polished, and after being inserted in DC stress cone, will be detachably connected bar and fix with cable core, and be inserted into survey
In examination sleeve pipe, the bar that is detachably connected being connected with direct current cables core is electrically connected with fixed connecting rod, finally installs spring, and leads to
Cross fixing bolt by spring-compressed to meet requirement, at the fixed connecting rod on test terminal top, introduce test voltage, can be real
Now direct current cables system is carried out with effectively corresponding test or correlational study test.
As improving further and supplementing to technique scheme, present invention additionally comprises following additional technical feature.
The centre bore of upper flange is stretched out in the upper end of described fixed connecting rod, and fixed connecting rod be located at upper flange with
On position be provided with a connecting hole axially vertical with it.It is easy to connecting wire, facilitate the introduction of test voltage.
The bottom of described fixed connecting rod is provided with for connecting the blind hole being detachably connected bar.Connect detachable in being easy to
Connecting rod.
The blind hole of described fixed connecting rod is electrically connected by watchband-shaped contactor with being detachably connected between bar.Watchband-shaped contactor
Electric connection mode is reliable and stable.
It is integrally connected by insulating part between fixed connecting rod and upper flange and high-tension shielding electrode sleeve, and be fixedly connected
It is to electrically connect between bar and upper flange and high-tension shielding electrode sleeve.Integrally connected, need not dismount during work, and electrical connection is easy to survey
Examination voltage-drop loading is on high-tension shielding electrode sleeve.
Described being detachably connected is electrically connected by bolt between bar and the core of tested direct current cables.Due to tested direct current
Cable end needs often to plug, and generic connectivity uncoupling phenomenon easily, electrically connected by bolt simple and convenient, firmly may be used
Lean on.
The lower end position of described high-tension shielding electrode sleeve is less than the lower end being detachably connected bar.High-tension shielding electrode sleeve is relatively
There is air-gap it is therefore an objective to can shield in length and fixed connecting rod between, this partial air gap, will not shadow due to being shielded
Ring the electric property of test terminal.
Insulating coating is stretched out in the lower end of described insulating part, and described lower flange is coated at outside insulating part.It is easy to lower flange
It is fixed on insulating part.
Described insulating coating is rubber full skirt；Described insulating part is epoxy resin.Rubber full skirt increases creep age distance,
Tune climbs that effect is good, reduces the probability of happening of the faults such as electric leakage, electric discharge；Epoxy resin is easy to the technique manufactures such as injection, is conveniently used for
Molding between gap.
Beneficial effect：This easily-testing terminal not only has the electric property of conventional products terminal, with existing test terminal
Compare, without evacuation, inflation or oiling, simplify terminal structure, decrease the set-up time, simple to operate, energy-conserving and environment-protective,
Thus improving work efficiency, can also reuse, reducing experimentation cost.
Brief description
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is present invention test sleeve pipe cross-sectional view.
In figure：1- tests sleeve pipe；2- is detachably connected bar；3- direct current cables；4- DC stress is bored；5- spring；6- fixes
Bolt；101- fixed connecting rod；102- upper flange；103- high-tension shielding electrode sleeve；104- rubber-covered full skirt；105- epoxy portion
Part；106- lower flange；107- jatharapanvartanasana cavity；108- connecting hole；109- blind hole.
Specific embodiment
Below in conjunction with Figure of description, technical scheme is described in further detail.
As shown in Figure 1-2, high voltage direct current cable dry type easily-testing terminal, including test sleeve pipe 1, DC stress cone 4
With spring 5, described test sleeve pipe 1 include insulating coating 104, in insulating coating 104 middle and upper part high-tension shielding electrode
Set 103, the fixed connecting rod 101 located at high-tension shielding electrode sleeve 103 center, described insulating coating 104, high-tension shielding electrode
It is provided with insulating part 105, lower insulating member 105 center in described insulating coating 104 between set 103 and fixed connecting rod 101
It is provided with the jatharapanvartanasana cavity 107 of lower ending opening, the top and bottom of test sleeve pipe 1 are respectively equipped with dismountable upper flange 102 He
Lower flange 106；The lower end of described fixed connecting rod 101 is electrically connected with and is detachably connected bar 2, is detachably connected the lower end of bar 2
For being connected with the core of tested direct current cables 3 end, described DC stress cone 4 and spring 5 are used for being coated at direct current cables 3
End, be provided with the fixing bolt 6 for holding out against spring 5 around described lower flange 106 centre bore.
Connecting wire for convenience, the centre bore of upper flange 102 is stretched out in the upper end of described fixed connecting rod 101, and
And fixed connecting rod 101 is provided with a connecting hole 108 axially vertical with it positioned at the position of upper flange more than 102.It is easy to even
Connect wire, facilitate the introduction of test voltage.
For the ease of electrical connection, the bottom of described fixed connecting rod 101 is provided with and is detachably connected bar 2 for connecting
Blind hole 109.Connect in being easy to and be detachably connected bar 2.
In order to preferably realize electrically connecting, the described blind hole 109 of fixed connecting rod 101 and being detachably connected between bar 2
Electrically connected by watchband-shaped contactor.The electric connection mode of watchband-shaped contactor is reliable and stable.
For the ease of safeguarding and simplifying structure, fixed connecting rod 101 and upper flange 102 and high-tension shielding electrode sleeve 103 it
Between be integrally connected by insulating part 105, and between fixed connecting rod 101 and upper flange 102 and high-tension shielding electrode sleeve 103 be
Electrical connection.Integrally connected, need not dismount during work, and electrical connection is easy in test voltage loading to high-tension shielding electrode sleeve 103,
Wire that need not be other connects, and simplifies structure.
In order that tested direct current cables 3 can firmly be realized electrically connecting with being detachably connected bar 2, described detachably connects
Electrically connected by bolt between extension bar 2 and the core of tested direct current cables 3.Because tested direct current cables 3 end needs often to insert
Pull out, uncoupling phenomenon easily in generic connectivity, electrically connected by bolt simple and convenient, solid and reliable.
In order to not affect the electric property of test terminal, the lower end position of described high-tension shielding electrode sleeve 103 is less than can
The lower end of dismounting connecting rod 2.High-tension shielding electrode sleeve 103 is longer to be existed and fixed connecting rod 101 between it is therefore an objective to can shield
Air-gap, this partial air gap, due to being shielded, will not affect that the electric property of test terminal.
Fix for the ease of installing, insulating coating 104 is stretched out in the lower end of described insulating part 105, described lower flange 106
It is coated at outside insulating part 105.It is easy to lower flange 106 to be fixed on insulating part 105.
In order to lift electric property, obtain preferably insulation and effect climbed in tune, described insulating coating 104 is rubber umbrella
Skirt；Described insulating part 105 is epoxy resin.Rubber full skirt increases creep age distance, adjusts that to climb effect good, reduces electric leakage, electric discharge etc.
The probability of happening of fault；Epoxy resin is easy to the technique manufactures such as injection, is conveniently used for molding between gap.
During use, tested direct current cables 3 insulating barrier is simply polished, after being inserted in DC stress cone 4, bar will be detachably connected
2 are fixed with cable core, are inserted in test sleeve pipe 1, and be connected with direct current cables 3 core is detachably connected bar 2 and fixes
Connecting rod 101 electrically connects, and finally installs spring 5, and is compressed spring 5 by fixing bolt 6 and meet requirement, from test terminal
Introduce test voltage at the fixed connecting rod 101 on top, can achieve and direct current cables 3 system is carried out with effectively corresponding test or phase
Close investigation test.
High voltage direct current cable dry type easily-testing terminal shown in figure 1 above -2 is the specific embodiment of the present invention,
Through embodying substantive distinguishing features of the present invention and progress, under the enlightenment of the present invention it can be carried out according to actual use needs
The equivalent modifications of the aspects such as shape, structure, all in the row of the protection domain of this programme.
Claims (10)
1. high voltage direct current cable dry type easily-testing terminal it is characterised in that：Including test sleeve pipe（1）, DC stress cone
（4）And spring（5）, described test sleeve pipe（1）Including insulating coating（104）, located at insulating coating（104）The height of interior middle and upper part
Pressure bucking electrode set（103）, located at high-tension shielding electrode sleeve（103）The fixed connecting rod at center（101）, described insulating coating
（104）, high-tension shielding electrode sleeve（103）And fixed connecting rod（101）Between be provided with insulating part（105）, described insulating coating
（104）Interior lower insulating member（105）Center is provided with the jatharapanvartanasana cavity of lower ending opening（107）, test sleeve pipe（1）Upper end even
It is connected to upper flange（102）, lower end be provided with dismountable lower flange（106）；Described fixed connecting rod（101）Lower end electrical connection
It is detachably connected bar（2）, it is detachably connected bar（2）Lower end be used for and tested direct current cables（3）The core of end connects, institute
The DC stress cone stated（4）And spring（5）For being coated at direct current cables（3）End, described lower flange（106）Centre bore
Surrounding is provided with for holding out against spring（5）Fixing bolt（6）.
2. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described fixation
Connecting rod（101）Upper end stretch out upper flange（102）Centre bore, and fixed connecting rod（101）Positioned at upper flange（102）
Above position is provided with a connecting hole axially vertical with it（108）.
3. high voltage direct current cable dry type easily-testing terminal according to claim 2 it is characterised in that：Described fixation
Connecting rod（101）Bottom be provided with for connect be detachably connected bar（2）Blind hole（109）.
4. high voltage direct current cable dry type easily-testing terminal according to claim 3 it is characterised in that：Described fixation
Connecting rod（101）Blind hole（109）Be detachably connected bar（2）Between electrically connected by watchband-shaped contactor.
5. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Fixed connecting rod
（101）With upper flange（102）And high-tension shielding electrode sleeve（103）Between pass through insulating part（105）It is integrally connected, and the company of fixation
Extension bar（101）With upper flange（102）And high-tension shielding electrode sleeve（103）Between for electrical connection.
6. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described is removable
Unload connecting rod（2）With tested direct current cables（3）Core between electrically connected by bolt.
7. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described high pressure
Bucking electrode set（103）Lower end position be less than be detachably connected bar（2）Lower end.
8. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described insulation
Part（105）Lower end stretch out insulating coating（104）, described lower flange（106）Be coated at insulating part（105）Outward.
9. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described revolution
Shape cavity（107）It is provided with inside gradient, jatharapanvartanasana cavity（107）Top gradient be more than middle and lower part.
10. high voltage direct current cable dry type easily-testing terminal according to claim 1 it is characterised in that：Described is exhausted
Edge overcoat（104）For rubber full skirt；Described insulating part（105）For epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611105485.6A CN106483413A (en) | 2016-12-05 | 2016-12-05 | High voltage direct current cable dry type easily-testing terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611105485.6A CN106483413A (en) | 2016-12-05 | 2016-12-05 | High voltage direct current cable dry type easily-testing terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106483413A true CN106483413A (en) | 2017-03-08 |
Family
ID=58275026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611105485.6A Pending CN106483413A (en) | 2016-12-05 | 2016-12-05 | High voltage direct current cable dry type easily-testing terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106483413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342899A (en) * | 2018-11-23 | 2019-02-15 | 长园电力技术有限公司 | A kind of test terminal of direct current cables |
| CN110176745A (en) * | 2019-07-04 | 2019-08-27 | 中车青岛四方车辆研究所有限公司 | A kind of pulling/inserting structure for EMU hv cable termination |
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| CN202333721U (en) * | 2011-11-23 | 2012-07-11 | 大同煤矿集团有限责任公司 | 500 kV cable accessory |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342899A (en) * | 2018-11-23 | 2019-02-15 | 长园电力技术有限公司 | A kind of test terminal of direct current cables |
| CN110176745A (en) * | 2019-07-04 | 2019-08-27 | 中车青岛四方车辆研究所有限公司 | A kind of pulling/inserting structure for EMU hv cable termination |
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