CN209247953U - A kind of test terminal of direct current cables - Google Patents
A kind of test terminal of direct current cables Download PDFInfo
- Publication number
- CN209247953U CN209247953U CN201821937484.2U CN201821937484U CN209247953U CN 209247953 U CN209247953 U CN 209247953U CN 201821937484 U CN201821937484 U CN 201821937484U CN 209247953 U CN209247953 U CN 209247953U
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- inner cone
- insulator
- connect
- direct current
- insulating sleeve
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Abstract
The utility model provides a kind of test terminal of direct current cables, it includes insulating sleeve, interior connection conductor, contact, inner cone insulator and stress cone main body, inner cone insulator, interior connection conductor are located in insulating sleeve, the top of inner cone insulator is equipped with the first metal insert, the side of first metal insert is connect with contact, and the other side of first metal insert and the core of test cable connect；Contact and interior connection conductor connect；The both ends of insulating sleeve are connect with upper flange, lower flange respectively；The stress cone main body is located at the inside of inner cone insulator, and is bonded by pressing device with the inner wall of inner cone insulator, and the stress cone main body is connect with test cable；Insulating sleeve and inner cone insulator, upper flange form sealing room between lower flange, and sealing is indoor to be full of dielectric.Using the technical solution, cable need not axially penetrate through entire insulating sleeve, be installed in inner cone insulator only, and quick detachable, reusable rate is high, reduces costs.
Description
Technical field
The utility model relates to direct current cables experimental technique field more particularly to a kind of test terminals of direct current cables.
Background technique
Relative to UHV AC transmission technique, HVDC Transmission Technology has many excellent in large capacity, high voltage, long distance power transmission
Gesture.With the rapid development of high voltage dc transmission technology, the construction of the under-water DCs power transmission engineering such as gorge over strait, high voltage direct current cable
Also it is widely used.What it is currently used for high-voltage alternating cable delivery test is water terminal, but due to the electricity of direct current cables
Field is related with conductivity, and complex distribution, therefore cannot use water terminal, and there is presently no be applicable to high voltage direct current in the market
The terminal of cable delivery test, can only be with direct current cables terminal come compatibility test, and direct current cables terminal price is expensive, technique is multiple
Miscellaneous and cannot reuse, existing test terminal is all by entire test cable through entire insulating sleeve, if test terminal
The direct current cables for needing to test other voltage class needs entire all disassemblies, disassembly trouble, and test cable dosage is big,
Waste is also big, while some components cannot reuse after disassembly, at high cost, therefore proposes that a kind of dispatch from the factory for direct current cables is tried
The terminal tested is necessary.
Utility model content
Against the above technical problems, the utility model discloses a kind of test terminal of direct current cables, the test terminal institutes
It is few using cable amount, can be effectively reduced cost, and the reusable rate of the device is high, it is quick detachable, be suitable for voltage rating ±
The direct current cables of 320kV and above.
In this regard, the technical solution adopted in the utility model are as follows:
A kind of test terminal of direct current cables comprising insulating sleeve, upper flange, lower flange, outer connection conductor, interior connection
Conductor, contact, inner cone insulator, stress cone main body, pressing device, bracket, the inner cone insulator, interior connection conductor are located at exhausted
In edge casing, the top of the inner cone insulator is equipped with the first metal insert, and the inner cone insulator passes through the first metal insert
Side connect with contact, the core of the other side of first metal insert and test cable connects；The contact and interior company
One end connection of conductor is connect, the other end of the interior connection conductor is connect with upper flange；The outer connection conductor is set to insulation sleeve
Pipe is outer and connect with upper flange；One end of the insulating sleeve is connect with upper flange, under the lower part of the inner cone insulator passes through
The connection of the other end of flange and insulating sleeve, the lower flange are connect with bracket；
The stress cone main body is located at the inside of inner cone insulator, and is bonded with the inner wall of inner cone insulator, the stress
Cone main body is connect with test cable；
One end of the pressing device is bonded with stress cone main body, and the other end and inner cone insulator of the pressing device connect
It connects；
The insulating sleeve and inner cone insulator, upper flange form sealing room between lower flange, and the sealing interior is full of
Dielectric.Wherein, the dielectric is insulating gas.
Wherein, the inner cone insulator is set in insulating sleeve, plays closing, support, insulating effect.The pressing device is set
In in inner cone insulator, being mainly used for compressive stres cone main body, it is installed in place it.The bracket is moveable, and plays support
The effect of test terminal.When installing the test terminal according to movement, suspension method, without using mounting bracket.It installs
Cheng Hou carries out grounding measures, and outer connection conductor, which connects high pressure, to be tested.
It adopting this technical solution, the insulating sleeve and upper flange, lower flange, inner cone insulator form sealing room, in
Portion's gassy dielectric, and no replacement is required for the dielectric, can be used continuously.Test cable need not axially penetrate through entire exhausted
Edge casing is installed in inner cone insulator only, solves the prior art and cable is needed entirely to run through, and needs all to tear open
It unloads, dismantle trouble, problem at high cost.
First metal insert passes through metal resilient members and test cable as a further improvement of the utility model,
Core connection.It is further preferred that the metal resilient members are spring.Wherein, the effect of metal resilient members is will to test
Cable core is connect with the first metal insert of inner cone insulator, and guarantees connection, side using the effect of the elastic force of metal elastic component
Just it installs.
This technical solution, the connection for realizing the first metal insert and test cable core by metal resilient members are mainly
For delivery test, such mode realize it is convenient and simple for connection, be not necessarily to stripping cable core, it is only necessary to cable shield is removed,
Installation connection can be carried out after handling insulation well.If the wireline test of other voltage class need to be changed, directly the test cable is pulled out
Get off, convenient disassembly.It is not limited to a kind of this mode herein to be attached, can choose different modes in different occasions
To connect.
Further, the axial cross section of first metal insert is door shape.
Further, the interior connection conductor is connect with upper flange by welding manner.
Further, one end of outer connection conductor is connect with upper flange by welding, another terminated high voltage.
Further, first metal insert is located at the top of inner cone insulator.
Further, first metal insert is located at the middle part at the top of inner cone insulator.
The both ends of the insulating sleeve are respectively equipped with grading ring and lower press as a further improvement of the utility model,
Ring, the upper grading ring and lower uniform pressure ring are individually fixed in upper flange, on lower flange.
Further, the upper grading ring and lower uniform pressure ring are set in the both ends of insulating sleeve, and solid by bolt respectively
Due on upper flange, lower flange.
Further, the upper grading ring and lower uniform pressure ring are integral ring-shaped grading ring.
Further, the upper grading ring and lower uniform pressure ring are spinning structure, and light-weight, equalizing effect is good.
The lower part of the inner cone insulator is equipped with the second metal insert as a further improvement of the utility model, described
Inner cone insulator is connect by the second metal insert with pressing device.
One end of the contact and the plug of interior connection conductor connect as a further improvement of the utility model, the other end
It is fixedly connected with inner cone insulator.Further, the other end of the contact is then bolted on inner cone insulator, is risen
The effect of centre connection.
It is cased on the outside of the first metal insert of the inner cone insulator as a further improvement of the utility model, built-in equal
Pressure ring；Further, the built-in grading ring is fixed on inner cone insulator by bolt together with contact, plays uniform electric field
Effect.
The outer wall of the insulating sleeve is equipped with multilayer full skirt as a further improvement of the utility model,.Using this technology
Scheme, creepage distance is longer, and surface is anti-to climb that dodge performance more preferable；The fixed upper lower flange in casing both ends.
The upper flange is equipped with charge valve, pressure gauge and relief valve as a further improvement of the utility model,.
The other end of the pressing device and inner cone insulator pass through tightening spiral shell as a further improvement of the utility model,
Bar is fixedly connected.Wherein tightening screw rod is for connecting inner cone insulator and pressing device, and to compress by adjusting nut and fill
It sets and is bonded closely with stress cone main body, and stress cone main body is installed in place.
The material of the stress cone main body is modified rubber material as a further improvement of the utility model, for straight
The test of galvanic electricity cable.Stress cone main body is directly covered and is attached on test terminal, and is held out against by pressing device, stress cone is made
Main body is bonded closely with inner cone insulator.There are many models for stress cone main body, are applicable to the direct current cables of different voltages grade
Test.
The test terminal of the direct current cables includes supporting insulator as a further improvement of the utility model, described
Supporting insulator is fixed on bracket, and is connect with lower flange.Further, the supporting insulator is bolted on branch
On frame, act the entire test terminal that insulate and fix.When the test terminal being installed according to movement, suspension method, nothing
The supporting insulator need to be used.
The pressing device includes cone support, holddown spring, spring guide, cone as a further improvement of the utility model,
The lower part of the tight disk of collection, the cone support is connect with spring guide, and the holddown spring covers on spring guide, and the cone collection is tight
Disk is connect with spring guide, holddown spring.Further, it is described cone support upper opening be taper, the inclined-plane of inner wall with answer
Power bores main body fitting, stronger.
Further, the lower part of the inner cone insulator is logical by the tight disk of cone collection of the second metal insert and pressing device
Cross the connection of tightening screw rod.
Compared with prior art, the utility model has the following beneficial effects:
Using the technical solution of the utility model, cable need not axially penetrate through entire insulating sleeve, be installed to inner cone insulation
In sub only, insulating sleeve therein and inner cone insulator and upper and lower flange form a sealing room, internal full of insulation
Medium, and no replacement is required for the dielectric, can be used continuously, it is few using cable amount, greatly reduce experimentation cost；In addition, only
Stress cone main body and test cable, pressing device is needed to remove replacement, reusable rate is high, and it is quick detachable, it is effectively reduced
Experimentation cost is suitable for the direct current cables of voltage rating ± 320kV and above.
In addition, the test terminal mounting means of technical solutions of the utility model is flexible, any way installation can be used, it is such as solid
Fixed, mobile, suspention etc., any direction.If desired the test terminal tests the direct current cables of other voltage class, only need
Cable, detection main body and pressing device to be pulled up and changed, other parts remain unchanged, and it is simple and convenient easy to operate, it repeats
Utilization rate is high, at low cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the test terminal of direct current cables of the utility model.
Fig. 2 is a kind of sectional view of the inner cone insulator of embodiment of the utility model.
Fig. 3 is a kind of structural schematic diagram for changeing part of embodiment of the utility model.
Fig. 4 is a kind of structural schematic diagram of the pressing device of embodiment of the utility model.
Appended drawing reference includes: 1- insulating sleeve, 2- upper flange, connects conductor outside 3-, the upper grading ring of 4-, connects and leads in 5-
Body, grading ring built in 6-, 7- contact, 8- inner cone insulator, 9- stress cone main body, 10- pressing device, 11- lower uniform pressure ring, 12-
Lower flange, 13- tighten screw rod, 14- supporting insulator, 15- test cable, 16- bracket, 17- pressure gauge, 18- relief valve, 19-
First metal insert, the second metal insert of 20-, 21- inserts spring, 31- cone support, 32- holddown spring, 33- spring guide, 34-
Bore the tight disk of collection.
Specific embodiment
The preferably embodiment of the utility model is described in further detail below.
As shown in FIG. 1 to 3, a kind of test terminal of direct current cables comprising insulating sleeve 1, upper flange 2, lower flange
12, outer connection conductor 3, interior connection conductor 5, contact 7, inner cone insulator 8, stress cone main body 9, pressing device 10 and bracket 16,
The inner cone insulator 8, interior connection conductor 5 are located in insulating sleeve 1, and the top of the inner cone insulator 8 is equipped with the first metal
Inserts 19, the inner cone insulator 8 are connect by the side of the first metal insert 19 with contact 7, first metal insert 19
The other side connect with the core of test cable 15 by inserts spring 21；One end of the contact 7 and interior connection conductor 5 connects
It connects, the other end of the interior connection conductor 5 is connect with upper flange 2；The outer connection conductor 3 be set to insulating sleeve 1 it is outer and with it is upper
Flange 2 connects；One end of the insulating sleeve 1 is connect with upper flange 2, the lower part of the inner cone insulator 8 by lower flange 2 with
The other end of insulating sleeve 1 connects, and the lower flange 2 is connect with bracket；The stress cone main body 9 is located at inner cone insulator 8
Inside, and the inner wall of itself and inner cone insulator 8 is fitted closely by pressing device 10, the stress cone main body 9 and test electricity
Cable 15 connects；Further, the test cable 15 passes through stress cone main body 9；
One end of the pressing device 10 is connect with stress cone main body 9, and the other end and inner cone of the pressing device 10 are exhausted
Edge 8 is fixedly connected by tightening screw rod 13.
The insulating sleeve 1 and inner cone insulator 8, upper flange 2 form sealing room, the sealing room between lower flange 12
It is interior to be full of dielectric；The upper flange 2 is equipped with charge valve and pressure gauge 17, relief valve 18.
Wherein, the core of test cable 15 directly passes through inserts spring 21 with the first metal insert 19 of inner cone insulator 8
It compresses.If the wireline test of other voltage class need to be changed, directly the test cable 15 is pulled, convenient disassembly.Into one
Step, the axial cross section of first metal insert 19 is door shape.The inserts spring 21 and the first metal insert 19 are fixed
Connection.
The both ends of the insulating sleeve 1 are respectively equipped with grading ring 4 and lower uniform pressure ring 11, the upper grading ring 4 and it is lower
Pressure ring 11 is set in the both ends of insulating sleeve 1, and is fixed by bolts in upper flange 2 respectively, on lower flange 12.Further,
The upper grading ring 4 and lower uniform pressure ring 11 are integral ring-shaped grading ring.Further, the upper grading ring 4 and lower uniform pressure ring 11
Light-weight for spinning structure, equalizing effect is good.The outside of first metal insert 19 of the inner cone insulator 8 is cased with built-in equal
Pressure ring 6；Further, the built-in grading ring 6 is fixed on inner cone insulator 8 by bolt with contact 7 together, plays uniformly electricity
The effect of field.
The lower part of the inner cone insulator 8 is equipped with the second metal insert 20, and the inner cone insulator 8 is embedding by the second metal
Part 20 is connect with pressing device 10.First metal insert 19 of interior vertebra insulator 8, the second metal insert 20 in addition to play support,
The effect of connection can also play the role of uniform electric field.
As shown in figure 4, the pressing device 10 includes cone support 31, holddown spring 32, spring guide 33, the cone tight disk of collection
34, the lower part of the cone support 31 is connect with spring guide 33, and 32 sets of the holddown spring is on spring guide 33, the cone collection
Tight disk 34 is connect with spring guide 33, holddown spring 32.Further, the upper opening of the cone support 31 is taper, inner wall
Inclined-plane be bonded with stress cone main body 9, it is stronger.Further, the lower part of the inner cone insulator 8 is embedding by the second metal
Part 20 is connect with the tight disk 34 of the cone collection of pressing device 10 by tightening screw rod 13.
Further, the outer wall of insulating sleeve 1 is equipped with multilayer full skirt.It adopts this technical solution, creepage distance is longer, table
Face is anti-to climb that dodge performance more preferable.The fixed upper lower flange 12 in 1 both ends of insulating sleeve.
Further, the material of the stress cone main body 9 is modified rubber material, the test for direct current cables.It will answer
Power cone main body 9 directly set is attached on test terminal, and is held out against by pressing device 10, keeps stress cone main body 9 and inner cone exhausted
The fitting of edge 8 is close.There are many models for stress cone main body 9, are applicable to the test of the direct current cables of different voltages grade.
Further, the test terminal of the direct current cables includes supporting insulator 14, and the supporting insulator 14 is fixed
It is connect on bracket 16, and with lower flange 12.The supporting insulator 14 is bolted on bracket 16, is played insulation and is consolidated
The effect of fixed entire test terminal.It is exhausted without using the support when test terminal being installed according to movement, suspension method
Edge 14.
In the present embodiment, the inner cone insulator 8 is set in insulating sleeve 1, plays closing, support, insulating effect.The pressure
Tight device 10 is set in inner cone insulator 8, is mainly used for compressive stres cone main body 9, is installed in place it.When test, install
Cheng Hou carries out grounding measures, and outer connection conductor 3, which connects high pressure, to be tested.
When carrying out the test of direct current cables, it is fixed temporarily after test cable 15 is beaten directly, removal test cable 15
Oversheath and protective metal shell by size requirement stripping core and are surface-treated cable insulation, then successively from test
Pressing device 10, lower uniform pressure ring 11 are inserted in by 15 end of cable, then stress cone main body 9 is inserted in test cable 16.Inner cone is exhausted
8 sets of edge are attached on test cable 15, and are fitted close with lower flange 12, and the core of test cable 15 is directly insulated with inner cone
Spring compression in first metal insert 19 of son 1.The nut on tightening screw rod 13 is adjusted again, so that pressing device 10 holds out against and answers
Power bores main body 9, it is ensured that stress cone main body 9 is installed in place.Contact 7 and built-in grading ring 6 are bolted on inner cone insulation
On son 8.On the lifting of insulating sleeve 1 and slowly land to lower flange 12, the screw hole of lower flange 12, blending bolt locking will be directed at.
Outer connection conductor 3 is soldered on upper flange 2, interior 5 one end of connection conductor and upper flange 2 weld, and the other end and the plug of contact 7 connect
It connects.Upper flange 2 is equipped with charge valve and pressure gauge 18, relief valve 19.The upper flange 2 being welded is installed to insulating sleeve 1
The bolt on upper flange 2 is locked after guaranteeing that the plug of contact 7 connects in upper end.After guaranteeing leakproofness, gas is injected into charge valve
Body dielectric, no replacement is required for the dielectric, can be used continuously.Grading ring 4 in lifting, blending bolt are fixed in method
On orchid 2, by another terminated high voltage of outer connection conductor 3.
It can be tested after being installed.If desired the direct current cables of other voltage class is tested, it only need to be by test electricity
Cable 15, stress cone main body 9 and pressing device 10 are pulled up and are changed, and other parts remain unchanged.
The direct current cables of ± 320kV is mounted on the test terminal and is tested, as a result as follows:
As it can be seen that can be very good the delivery test for carrying out direct current cables, and the cable used using the test terminal
Few, convenient disassembly may be reused, and greatly reduce cost.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (10)
1. a kind of test terminal of direct current cables, it is characterised in that: it include insulating sleeve, upper flange, lower flange, it is outer connection lead
Body, interior connection conductor, contact, inner cone insulator, stress cone main body, pressing device, bracket, the inner cone insulator, interior connection
Conductor is located in insulating sleeve, and the top of the inner cone insulator is equipped with the first metal insert, and the inner cone insulator passes through the
The side of one metal insert is connect with contact, and the other side of first metal insert and the core of test cable connect；It is described
One end of contact and interior connection conductor connects, and the other end of the interior connection conductor is connect with upper flange；The outer connection conductor
It is connect outside insulating sleeve and with upper flange；One end of the insulating sleeve is connect with upper flange, the inner cone insulator
Lower part is connected by the other end of lower flange and insulating sleeve, and the lower flange is connect with bracket；
The stress cone main body is located at the inside of inner cone insulator, and is bonded with the inner wall of inner cone insulator, the stress cone master
Body is connect with test cable；
One end of the pressing device is bonded with stress cone main body, and the other end of the pressing device is connect with inner cone insulator；
The insulating sleeve and inner cone insulator, upper flange form sealing room between lower flange, and the sealing is indoor full of insulating
Medium.
2. the test terminal of direct current cables according to claim 1, it is characterised in that: distinguish at the both ends of the insulating sleeve
Equipped with upper grading ring and lower uniform pressure ring, the upper grading ring and lower uniform pressure ring are individually fixed in upper flange, on lower flange.
3. the test terminal of direct current cables according to claim 1, it is characterised in that: first metal insert passes through gold
The core for belonging to elastic component and test cable connects.
4. the test terminal of direct current cables according to claim 1, it is characterised in that: the lower part of the inner cone insulator is set
There is the second metal insert, the inner cone insulator is connect by the second metal insert with pressing device.
5. the test terminal of direct current cables according to claim 4, it is characterised in that: one end of the contact and interior connection
Conductor plug connection, the other end are fixedly connected with inner cone insulator.
6. the test terminal of direct current cables described in any one according to claim 1 ~ 5, it is characterised in that: the insulating sleeve
Outer wall be equipped with multilayer full skirt.
7. the test terminal of direct current cables described in any one according to claim 1 ~ 5, it is characterised in that: on the upper flange
Equipped with charge valve, pressure gauge and relief valve.
8. the test terminal of direct current cables described in any one according to claim 1 ~ 5, it is characterised in that: the pressing device
The other end be fixedly connected by tightening screw rod with inner cone insulator.
9. the test terminal of direct current cables described in any one according to claim 1 ~ 5, it is characterised in that: the inner cone insulation
Built-in grading ring is cased on the outside of first metal insert of son；The built-in grading ring is fixed on inner cone insulator together with contact
On.
10. the test terminal of direct current cables described in any one according to claim 1 ~ 5, it is characterised in that: it includes support
Insulator, the supporting insulator is fixed on bracket, and is connect with lower flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937484.2U CN209247953U (en) | 2018-11-23 | 2018-11-23 | A kind of test terminal of direct current cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937484.2U CN209247953U (en) | 2018-11-23 | 2018-11-23 | A kind of test terminal of direct current cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247953U true CN209247953U (en) | 2019-08-13 |
Family
ID=67529812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821937484.2U Active CN209247953U (en) | 2018-11-23 | 2018-11-23 | A kind of test terminal of direct current cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247953U (en) |
Cited By (1)
| 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 |
-
2018
- 2018-11-23 CN CN201821937484.2U patent/CN209247953U/en active Active
Cited By (1)
| 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 |
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