CN206685871U - A kind of direct current cables terminal for indoor high-voltage - Google Patents
A kind of direct current cables terminal for indoor high-voltage Download PDFInfo
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- CN206685871U CN206685871U CN201720219567.7U CN201720219567U CN206685871U CN 206685871 U CN206685871 U CN 206685871U CN 201720219567 U CN201720219567 U CN 201720219567U CN 206685871 U CN206685871 U CN 206685871U
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- direct current
- current cables
- cables terminal
- stress cone
- sleeve
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Abstract
It the utility model is related to cable accessory technical field, and in particular to a kind of direct current cables terminal for indoor high-voltage, including：Insulating sleeve (5), built with insulating compound (6)；Base (1), it is arranged at the bottom of the insulating sleeve (5)；Stress cone (8), it is internal to be arranged at the insulating sleeve (5), the stress cone (8) is fixed by a stop sleeve (9), and the bottom of the stress cone (8) sets the mounting structure for coordinating stop sleeve (9) top.The utility model provides the direct current cables terminal that a kind of stress cone firmly installed and be conveniently used for indoor high-voltage.
Description
Technical field
It the utility model is related to cable accessory technical field, and in particular to a kind of direct current cables for indoor high-voltage is whole
End.
Background technology
Cable termination collection waterproof, Stress Control, shield, electrically isolate from one, there is good electric property and mechanical performance,
Can be long-term use of under the conditions of various rugged environments, have the advantages that in light weight, easy for installation.Cable termination is widely used in
The every field such as electric power, petrochemical industry, metallurgy, railway port and building.But it can be used in the straight of indoor 500KV high pressures at present
It is less to flow cable termination, and existing high-voltage direct-current cable terminal stress cone installation process is complicated, the requirement to installation personnel compared with
Height, installation are wasted time and energy.For example, Chinese patent literature CN102270825A discloses a kind of 500KV and more than 500KV electric power electricity
Cable outdoor terminal, including sleeve pipe, insulating compound, stress cone and around packaging material, also include outlet gold utensil, upper cover plate, lower shoe and
Tail pipe, stress cone when installing cable termination, after stress cone is enclosed on cable, could be installed around packaging material in sleeve pipe,
Installation is to form multi-layer capacity between the conductor layer (high potential) of cable and semiconductor layer (grounding body) around the purpose of packaging material,
So as to play a part of uniform electric field.If material is inconsistent during being installed around packaging material, or the metal impurities in environment are more,
The electric capacity of formation will be uneven, and then causes field strength uneven, so that the insulation layer fails of cable.Further, since should
The internal diameter of power cone is typically smaller than the external diameter of cable jacket layer, can exert oneself its being arranged on outside cable downwards when stress cone is installed
Layer, a upward power is produced because the friction of tangential direction just has, after insulating oil is filled, due to the pressure of insulating oil in itself
The presence of power, if stress cone can cause it to have the trend of slide downward in lower section without support, finally deviate initial installation position
Put；Simultaneously because stress cone is immersed in insulating oil after mounting, relaxation occurs after long-time use, it is inclined to also result in its
From initial installation site, so that the contact between the semiconductive portions of stress cone and the semi-conductive layer of cable changes
Become, the semi-conductive layer of the cable field strength at stripping is too high, causes failure of insulation.
Although also use some means in the prior art to support stress coning row, to avoid it inclined in use
From initial installation site, cause failure of insulation, such as stress cone and cable are wound fixation with adhesive tape, or pass through bullet
Spring bearing stress is bored, but both modes come with some shortcomings in actual use.Adhesive tape is wound due to being artificial
The operation of progress, the dynamics of winding is simultaneously uneven, causes the gap between adhesive tape, stress cone and cable jacket layer uneven,
After expanded by heating, easily discharge, while change integrally-built mechanical property, influence the normal use of current interruption.Bullet
The mode of spring support needs to set several (generally 5~6) can just play support work well in hv cable termination
With.Therefore there is stress cone installation process complexity in such scheme, and the operation to installation personnel requires the defects of higher.
Utility model content
Therefore, the technical problems to be solved in the utility model in direct current cables terminal of the prior art stress cone pacify
Dress process is complicated, wastes time and energy, and supports, installs unstable defect, so as to provide a kind of stress cone firmly install with conveniently
The direct current cables terminal for indoor high-voltage.
In order to solve the above technical problems, the utility model provides a kind of direct current cables terminal for indoor high-voltage, bag
Include：
Insulating sleeve, built with insulating compound；
Base, it is arranged at the bottom of the insulating sleeve；
Stress cone, it is arranged inside the insulating sleeve, the stress cone is fixed by a stop sleeve, the stress cone
Bottom the mounting structure for coordinating the stop sleeve top is set.
Described direct current cables terminal, the mounting structure have trough body structure of the opening towards the base, the branch
The minor diameter fit of the external diameter of support set cylinder and the trough body structure is set, to cause trough body structure set of the stress cone by bottom
It is located at the top of the stop sleeve.
Described direct current cables terminal, the bottom of the stop sleeve, which extends towards the base and sealed with the base, to be connected
Connect, so as to be formed between the outer wall of the outer wall of the stop sleeve, stress cone and the insulating sleeve inwall for installing insulating compound
Annular seal space.
Described direct current cables terminal, in addition to be arranged at it is on the direct current cables terminal outer wall, for the direct current
Cable termination surrounding electric field carries out uniform pressure-equalizing device.
Described direct current cables terminal, in addition to electrode and upper flange located at the top of the insulating sleeve, and be located at
Lower flange between the insulating sleeve and the base, the insulating sleeve pass through the upper flange, the lower flange and institute
State electrode, the base is tightly connected.
Described direct current cables terminal, in addition to the insulated umbrella being set in outside the insulating sleeve.
Described direct current cables terminal, the insulating compound are Silica hydrogel.
Described direct current cables terminal, the material of the stop sleeve is galss fiber reinforced resin.
Described direct current cables terminal, the stress cone are made up of semiconductive portion and reinforced insulation portion, the semiconductive portion
Contact setting with the semi-conductive layer of the cable, and the semiconductive portion is semi-conductive silicone rubber material, the reinforced insulation portion
For silicone rubber material.
Described direct current cables terminal, the direct current cables terminal are straight tube shape.
Technical solutions of the utility model, have the following advantages that：
1. the direct current cables terminal provided by the utility model for indoor high-voltage, the mounting structure that stress cone passes through bottom
Stop sleeve with being arranged in insulating sleeve is fixed, and can is first by support set jacket casing so when installing direct current cables terminal
On cable, then mount stress is bored again, not only stress cone is easily installed, and stop sleeve also provides machine for stress cone
Tool supports, and will not cause stress cone in use for some time because the movement of position occurs for deformation, and then cause failure of insulation,
So that the connection between stress cone, cable and insulating sleeve is relatively reliable.
2. the direct current cables terminal provided by the utility model for indoor high-voltage, the trough body structure that stress cone passes through bottom
The top of stop sleeve is set in, and the minor diameter fit of the external diameter of stop sleeve and trough body structure is set, this mounting means is not
It is only simple, it is easily operated, it is ensured that the sealing that stop sleeve is connected with stress cone, while play the effect of sealed insulation agent
Fruit.
3. the direct current cables terminal provided by the utility model for indoor high-voltage, the insulating compound in insulating sleeve coagulates for silicon
Glue, Silica hydrogel as a kind of more environmentally friendly material, also with it is in light weight the characteristics of, while avoid insulating oil and sulfur hexafluoride gas
Body is as insulating compound to harmfulness consequence caused by environment possibility.It is in addition, whole to direct current cables using Silica hydrogel as insulating compound
The requirement of end sealing is lower, and difficulty of processing is low, therefore reduces production cost.
4. the direct current cables terminal provided by the utility model for indoor high-voltage, the direct current cables terminal is straight tube
Shape, the production technology of the insulated umbrella on insulating sleeve and its surface is not only simplify, reduces production cost, also add inside
Oil-filled quantity, be advantageous to radiate.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the direct current cables terminal of the present utility model for indoor high-voltage.
Description of reference numerals：
1- bases；2- electrodes；3- upper flanges；4- lower flanges；5- insulating sleeves；6- insulating compounds；7- insulated umbrellas；8- stress
Cone；9- stop sleevees.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Conflict can is not formed to be combined with each other.
A kind of embodiment of direct current cables terminal for indoor high-voltage as shown in Figure 1, including insulating sleeve
5, built with insulating compound 6；Base 1, it is arranged at the bottom of the insulating sleeve 5；Stress cone 8, it is arranged in the insulating sleeve 5
Portion, the stress cone 8 are fixed by a stop sleeve 9, and the bottom of the stress cone 6, which is set, coordinates the top of stop sleeve 9
Mounting structure.Specifically, the mounting structure has trough body structure of the opening towards the base 1, the stop sleeve 9
The minor diameter fit of external diameter and the trough body structure is set, to cause the stress cone 8 to be set in institute by the trough body structure of bottom
State the top of stop sleeve 9.
Stress cone 8 is fixed by the trough body structure of bottom with the stop sleeve 9 being installed in insulating sleeve 5, by appropriate
Size design make and certain interference pressure between stress cone 8 and stop sleeve 9 be present, to ensure sealing, so installing
Stop sleeve 9 and base 1 are first enclosed on cable by can during direct current cables terminal, and then mount stress bores 8 again, due to stress
The bottom of cone 8 is provided with trough body structure, therefore is easy to the top of stop sleeve 5 directly to coordinate with its grafting and installs, and not only installs
It is convenient, and stop sleeve 9 also provides mechanical support for stress cone 8, and stress cone will not be caused inclined in use for some time
From its initial installation site, so that the contact between the semiconductive portions of stress cone and the semi-conductive layer of cable changes
Become, the semi-conductive layer of the cable field strength at stripping is too high, causes the generation of the phenomenon of failure of insulation；Stop sleeve 5 is outer simultaneously
The minor diameter fit of footpath and trough body structure is set, and is not only caused firm supporting, is also caused stop sleeve 9 to play the effect of sealed insulation agent
Fruit.
Specifically, insulating sleeve 5 is the homogeneous straight tube structure of about one diameter, and the diameter of base 1 is all higher than insulating sleeve 5
Diameter, make it that direct current cables terminal is in integrally straight tube shape, base 1 can be cast iron quality.Stress cone 8 is close to insulating sleeve 6
One end set, that is, be arranged at the external shielding layer in semiconductive portion of cable, to cause the semiconductive portion of stress cone and cable
Semiconductive portion is contacted, and stop sleeve 9 is arranged between stress cone 8 and base 1, and the material of stop sleeve 9 is glass fiber reinforcement
Resin, there is certain rigidity, ensure that support strength.
As a kind of embodiment, the bottom of the stop sleeve 9 extend towards the base 1 and with the base 1
It is tightly connected, so as to be formed between the outer wall of the outer wall of the stop sleeve 9, stress cone 8 and the inwall of the insulating sleeve 5 for filling
If the annular seal space of insulating compound 6.Base 1 towards the end face center of stop sleeve 9 integrally formed with mounting groove, the internal diameter of mounting groove with
The external diameter adaptation of stop sleeve 9, to ensure firmly installing property；Internal thread can be set on the inwall of mounting groove, stop sleeve 9
Lower end sets external screw thread, base 1 and stop sleeve 9 to coordinate by screw thread and achieved a fixed connection.The internal diameter of insulating sleeve 5 is more than branch
The external diameter of support set cylinder 9 is set, to form the annular seal space for being used for installing insulating compound 6.
As another embodiment, in addition to be arranged at it is on the direct current cables terminal outer wall, for described
Direct current cables terminal surrounding electric field carries out uniform pressure-equalizing device.
As a kind of embodiment, in addition to electrode 2 and upper flange 3 located at the top of the insulating sleeve 6, and
Lower flange 4 between the insulating sleeve 5 and the base 1, electrode 2 are aluminum material, are connect with the top of insulating sleeve 5
Touch and set, upper flange 3 and lower flange 4 are cast iron quality, and to be round table-like, stub end and the Top electrode 2 or base 1 of round platform connect
Touch and fix, the small head end of round platform is fixed with two end in contact of insulating sleeve 5, and the insulating sleeve 5 passes through the upper flange 3, institute
Lower flange 4 is stated to be tightly connected with the electrode 2, the base 1.
As a kind of embodiment, in addition to the insulated umbrella 7 being set in outside the insulating sleeve 5.Insulated umbrella 7 is silicon
Elastomeric material, insulated umbrella 7 are evenly distributed on the outer wall of insulating sleeve 5.
As a kind of embodiment, the insulating compound 6 is Silica hydrogel.Alternately, insulating compound 6 also may be used
Insulating oil is thought, as long as insulating effect can be played.
As a kind of embodiment, the stress cone 8 is made up of semiconductive portion and reinforced insulation portion, the semiconductive
Portion contacts setting with the semi-conductive layer of the cable, and the semiconductive portion is semi-conductive silicone rubber material, the reinforced insulation
Portion is silicone rubber material.The effect in stress cone semiconductive portion is the earthing potential of flat satin cable, evacuates the power line of earthing potential,
So as to smooth electric field, this position electric-field intensity is reduced.Insulated because value of the electric-field intensity after reduction in this position is still higher than
The material breakdown intensity of the insulating materials such as oil or Silica hydrogel, therefore also need to set the reinforced insulation portion based on silastic material,
To be resistant to dielectric strength herein.
As a kind of embodiment, being provided with inside the stop sleeve 9 and the stress cone 8 allows cable to wear
The accommodation space crossed, the internal diameter of accommodation space are consistent with the external diameter of cable.Insulating compound is filled with space inside stop sleeve 9
6, cable is among the encirclement in insulating compound 6 inside stop sleeve 9.
When installing direct current cables terminal, made marks first in cable surface correct position, divest the cable of appropriate length
PE crusts, aluminum sheath is cut, then the base of direct current cables terminal and stop sleeve are enclosed on cable.Cable screens are divested again
Layer is covered, and cable insulation of polishing, remove flash removed.The conductor outer layer material of certain length at the top of cable is divested until conductor reveals
Go out, surface of insulating layer uniformly smears lubrication Silica hydrogel.Then mount stress is bored, and the trough body structure that stress cone is passed through into bottom
It is connected with stop sleeve, because the external diameter of stop sleeve and the minor diameter fit of trough body structure are set, therefore ensure that its sealing effect
Fruit.Using outer layer covering insulated umbrella insulating sleeve and upper flange, lower flange as an integral installation in place, then install top electricity
Pole and pressure-equalizing device, insulating compound Silica hydrogel is filled with most backward insulating sleeve, and carry out heating cure.In the utility model design
Size, shape and the position of each several part are optimized for the purpose of improving Electric Field Distribution, have taken into full account cable insulation
Electric field tangential with stress cone interface, stress cone semiconductive portions surface field intensity modulus value, the tangential electric-field strength in insulated umbrella surface
The factors such as degree, pressure-equalizing device surface field modulus value, have reached improvement Electric Field Distribution, have reduced the possible purpose of shelf depreciation.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (10)
- A kind of 1. direct current cables terminal for indoor high-voltage, it is characterised in that including：Insulating sleeve (5), built with insulating compound (6)；Base (1), it is arranged at the bottom of the insulating sleeve (5)；Stress cone (8), the insulating sleeve (5) inside is arranged at, the stress cone (8) is fixed by a stop sleeve (9), institute The bottom for stating stress cone (8) sets the mounting structure for coordinating stop sleeve (9) top.
- 2. direct current cables terminal according to claim 1, it is characterised in that the mounting structure has opening described in The trough body structure of base (1), the external diameter of the stop sleeve (9) is set with the minor diameter fit of the trough body structure, to cause State the top that stress cone (8) is set in the stop sleeve (9) by the trough body structure of bottom.
- 3. direct current cables terminal according to claim 1, it is characterised in that the bottom of the stop sleeve (9) is towards described Base (1) extends and is tightly connected with the base (1), so that the outer wall of the stop sleeve (9), the outer wall of stress cone (8) And the annular seal space for being used for installing insulating compound (6) is formed between insulating sleeve (5) inwall.
- 4. direct current cables terminal according to claim 1, it is characterised in that also include being arranged at the direct current cables terminal It is on outer wall, carry out uniform pressure-equalizing device for the direct current cables terminal surrounding electric field.
- 5. direct current cables terminal according to claim 1, it is characterised in that also include located at the insulating sleeve (5) The electrode (2) and upper flange (3) on top, and the lower flange (4) between the insulating sleeve (5) and the base (1), institute Insulating sleeve (5) is stated by the upper flange (3), the lower flange (4) and the electrode (2), the base (1) sealing to connect Connect.
- 6. direct current cables terminal according to claim 1, it is characterised in that also include being set in the insulating sleeve (5) Outer insulated umbrella (7).
- 7. direct current cables terminal according to claim 1, it is characterised in that the insulating compound (6) is Silica hydrogel.
- 8. direct current cables terminal according to claim 1, it is characterised in that the material of the stop sleeve (9) is glass Fiber-reinforced resin.
- 9. direct current cables terminal according to claim 1, it is characterised in that the stress cone (8) is by semiconductive portion and increasing Strong insulation division composition, the semiconductive portion contacts setting with the semi-conductive layer of the cable, and the semiconductive portion is semiconductive Silicone rubber material, the reinforced insulation portion are silicone rubber material.
- 10. direct current cables terminal according to claim 1, it is characterised in that the direct current cables terminal is straight tube shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720219567.7U CN206685871U (en) | 2017-03-07 | 2017-03-07 | A kind of direct current cables terminal for indoor high-voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720219567.7U CN206685871U (en) | 2017-03-07 | 2017-03-07 | A kind of direct current cables terminal for indoor high-voltage |
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| Publication Number | Publication Date |
|---|---|
| CN206685871U true CN206685871U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720219567.7U Active CN206685871U (en) | 2017-03-07 | 2017-03-07 | A kind of direct current cables terminal for indoor high-voltage |
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| CN (1) | CN206685871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230963A (en) * | 2017-03-07 | 2017-10-03 | 全球能源互联网欧洲研究院 | A kind of direct current cables terminal for indoor high-voltage |
-
2017
- 2017-03-07 CN CN201720219567.7U patent/CN206685871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107230963A (en) * | 2017-03-07 | 2017-10-03 | 全球能源互联网欧洲研究院 | A kind of direct current cables terminal for indoor high-voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Germany Berlin Makegelafen Street No. 34 Co-patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee after: State Grid Corporation of China Address before: Germany Berlin Makegelafen Street No. 34 Co-patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee before: State Grid Corporation of China |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 34 Mark Grafin Avenue, Berlin, Germany Co-patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee after: STATE GRID CORPORATION OF CHINA Address before: 34 Mark Grafin Avenue, Berlin, Germany Co-patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee before: State Grid Corporation of China |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190709 Address after: 34 Mark Grafin Avenue, Berlin, Germany Co-patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee after: STATE GRID CORPORATION OF CHINA Co-patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Address before: 34 Mark Grafin Avenue, Berlin, Germany Co-patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE Co.,Ltd. Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE EUROPE GmbH Co-patentee before: STATE GRID CORPORATION OF CHINA |
|
| TR01 | Transfer of patent right |