CN207218211U - One kind ± 500kV direct current cables Integral prefabricated type middle joints - Google Patents
One kind ± 500kV direct current cables Integral prefabricated type middle joints Download PDFInfo
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- CN207218211U CN207218211U CN201721190183.3U CN201721190183U CN207218211U CN 207218211 U CN207218211 U CN 207218211U CN 201721190183 U CN201721190183 U CN 201721190183U CN 207218211 U CN207218211 U CN 207218211U
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- Prior art keywords
- integral prefabricated
- cable
- direct current
- connecting tube
- conductor connecting
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- 238000009413 insulation Methods 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 229920001971 elastomer Polymers 0.000 claims abstract description 24
- 239000005060 rubber Substances 0.000 claims abstract description 24
- 239000012212 insulator Substances 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000003032 molecular docking Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 7
- 229910000906 Bronze Inorganic materials 0.000 claims description 22
- 239000010974 bronze Substances 0.000 claims description 22
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 10
- 238000009825 accumulation Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 7
- 230000007704 transition Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010061 rubber shaping Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model discloses one kind ± 500kV direct current cables Integral prefabricated type middle joints, including integral prefabricated rubber insulators, conductor connecting tube and protective housing, the core of docking cable fixes the both ends for being crimped on conductor connecting tube, grading shield is sleeved in conductor connecting tube, integral prefabricated rubber insulators are wrapped in the outside of grading shield, the inner shield pipe sleeve of integral prefabricated rubber insulators is outside grading shield, major insulation body is overmolded onto on the outside of inner shield pipe, outer semiconductive set suit is molded on major insulation body, stress cone is molded over the both ends of major insulation body, and it is fixedly set on the cable of docking；Protective housing fixes cover on cable and integral prefabricated rubber insulators, filling insulative water-proof glue inside protective housing.The utility model can realize the connection of two cables easily and fast, simple in construction, efficiently solve the accumulation problem of dielectric interface shape electric charge, effectively improve the Electric Field Distribution of cable incision position.
Description
Technical field
The utility model belongs to electric cable fitting technology, and in particular to one kind ± 500kV direct current cables is with integral prefabricated
Formula transition joint.
Background technology
On the one hand, with the rise of new energy construction, matched power grid construction demand has been driven.On the other hand, exist
In global power engineering construction, the demand of high voltage direct current cable and annex needed for long distance powedr transmission is more and more, and market is not in
The disconnected trend increased.With the quickening of raising and the ocean development of Ocean Technology in China, Guo Wang companies, Nan Wang companies successively set up
The coastal waters direct current transportation demonstrative projects such as DC ± 160kV, DC ± 200kV, DC ± 320kV, and successively put into operation.These projects are transported
Row is ripe, will promote the process of China coastal seas power exploi-tation significantly, high voltage dc transmission technology just turns into more and more important one
Item technology.Not only transmission capacity is 2 times of ac cable to high voltage direct current cable, and electric energy loss of transmitting electricity is only ac cable
40%, its transmission distance lengthens significantly, and D.C. high voltage transmission cost has been effectively controlled, and is easier to ensure that power network is steady
It is fixed, there is practical significance for quality, stability and the reliability for improving electric power.
During DC power transmission line is set up, endless that high voltage DC power cable can not possibly be processed, typically all
Within 1000 meters, and cable connection is got up just to need transition joint, because DC ± 500kV voltage class is higher, belonged to
The category of super-pressure, thus it is very high to the performance requirement of transition joint, especially in terms of the research and development of direct current material, in existing
Between joint structure under, with the increase of transmission voltage, substantial amounts of space charge can be gathered in transition joint material so that middle
The insulation of the electrical conductivity of the material of joint at different temperatures and cable body mismatches, and with the rise of conveying voltage, in
Between the structure of joint to be also made more superfluous big, how to efficiently solve the dielectric interface shape electric charge of transition joint
Accumulation problems, it is the focus technology problem of the erection of solution ± 500kV DC power transmission lines.
Utility model content
The utility model solve technical problem be：For existing transition joint in ± 500kV DC power transmission lines
The accumulation problems of existing space charge, there is provided one kind ± 500kV direct current cables Integral prefabricated type middle joints.
The utility model adopts the following technical scheme that realization：
One kind ± 500kV direct current cables Integral prefabricated type middle joints, including integral prefabricated rubber insulators 5, conductor
Connecting tube 6, grading shield 7 and protective housing, the core inserting for docking cable are crimped on the both ends of conductor connecting tube 6, grading shield
7 are sleeved in conductor connecting tube 6, and the integral prefabricated rubber insulators 5 tightly overlay on the outside of grading shield 7, described integral prefabricated
Rubber insulators 5 include major insulation body 51, inner shield pipe 52, outer semiconductive set 53 and stress cone 54, the inner shield pipe 52
It is sleeved on outside grading shield 7, the major insulation body 51 is overmolded onto the outside of inner shield pipe 52, and the outer semiconductive set 53 is molded over
The outer surface of major insulation body 51, the stress cone 54 is molded over the both ends of insulating body, and is fixedly set on the cable of docking；
The protective housing fixes cover outside cable and integral prefabricated rubber insulators 5, and filling insulation is anti-inside the protective housing
Glue 9.
Further, the protective housing includes the first bronze medal containment vessel 2 and the second bronze medal containment vessel 8, the He of the first bronze medal containment vessel 2
It is sealedly and fixedly connected between second bronze medal containment vessel 8 by insulation sleeve 4 integral, both ends are fixedly set in two groups of electricity of docking respectively
On cable, integral prefabricated rubber insulators 5 are covered inside protective housing.
Further, it is equipped with earthing rod 3 on the first bronze medal containment vessel 2 and the second bronze medal containment vessel 8.
Further, the core crimping of the cable is fixed in conductor connecting tube 6, the conductor connecting tube 6 and is pressed
It is attached between cover 7 by copper braid over braid.
Further, the grading shield 7 uses Hafu-type two halves structure.
In one kind ± 500kV direct current cables Integral prefabricated type middle joints of the present utility model, the major insulation body
51 and stress cone 54 using nano-filler modified ethylene propylene diene monomer (EPDM) material note rubber shaping.
Further, the material of the insulation sleeve 4 uses glass fiber impregnated epoxy resin.
Integral prefabricated rubber insulators 5 described in the utility model are core component, using geometric type electric stress control methods
Improve Electric Field Distribution, by the major insulation body using nano-filler modified ethylene propylene diene rubber insulating materials and stress cone, inner shield
Pipe, outer semiconductive set note rubber are into a single integrated structure, efficiently solve the accumulation problem of dielectric interface shape electric charge, effectively
Improve the Electric Field Distribution of cable incision position.Wherein, stress cone plays uniform electric field to cable outer semiconducting layer fracture, interior
Shielded-plate tube plays a part of to shield electric field to cable core connecting portion.
In summary, the utility model can realize the connection of two cables easily and fast, efficiently solve insulation
The accumulation problem of medium interface space charge, effectively improve the Electric Field Distribution of cable incision position.
The utility model is described further below in conjunction with the drawings and specific embodiments.
Brief description of the drawings
Fig. 1 is the internal structure signal of one kind ± 500kV direct current cables Integral prefabricated type middle joints in embodiment
Figure.
Label in figure：1- cables, 2- the first bronze medal containment vessels, 3- earthing rods, 4- insulation sleeves, the integral prefabricated rubber-covereds of 5-
Part, 6- conductor connecting tubes, 7- grading shields, 8- the second bronze medal containment vessels, 9- insulative water-proof glue, 51- major insulation bodies, 52- inner shields
Pipe, the outer semiconductive sets of 53-, 54- stress cones.
Embodiment
Embodiment
Referring to Fig. 1, it is illustrated that in one kind ± 500kV direct current cables Integral prefabricated type middle joint to be of the present utility model
Preferred scheme, including the connection of cable 1, the first bronze medal containment vessel 2, earthing rod 3, insulation sleeve 4, integral prefabricated rubber insulators 5, conductor
Pipe 6, grading shield 7, the second bronze medal containment vessel 8 and insulative water-proof glue 9.
Wherein, integral prefabricated rubber insulators 5 and conductor connecting tube 6 be transition joint agent structure, conductor connecting tube 6
For the conductor for the cable conduction connection that achieves a butt joint, the core inserting of two groups of cables 1 of docking is crimped on the two of conductor connecting tube 6
End, equal gland 7 are sleeved in conductor connecting tube 5, are attached by copper braid over braid, and integral prefabricated rubber insulators 5 are wrapped in
The outside of grading shield 7, major insulation body 51, inner shield pipe 52, outer semiconductive set 53 and stress cone 54 are specifically included, wherein, interior screen
Cover pipe 52 to be sleeved in conductor connecting tube 6, the cladding of major insulation body 51 is cast in the outside of inner shield pipe 52, the outer shaping of semiconductive set 53
In the outer surface of major insulation body 51, two groups of stress cones 54 are fixedly set on the cable of two groups of docking respectively, and in major insulation body 51
Both ends are coordinated by circular conical surface.In the present embodiment, stress cone 54 is molded over the both ends of major insulation body 51.The cable of the present embodiment
1 core crimping is fixed in conductor connecting tube 6, conductor connecting tube 6 is enclosed on the conductor of two end cables, then conductor
The both ends of connecting tube 6 are crimped in the cable core conductor of cable end, and fixed cover is provided between conductor connecting tube 6 and inner shield pipe 52
Grading shield 7, grading shield 7 use Hafu-type two halves structure.Connected between conductor connecting tube 6 and grading shield 7 by copper braid over braid
Connect.
The conductor connecting tube 6 of the present embodiment can be copper material, for connecting copper core cable or aluminium material, use
To connect aluminium cable；From the conductor connecting tube of unlike material, the limited core for avoiding cable 1 connects contact resistance mistake
Greatly.
The protective housing of first bronze medal containment vessel 2 and the second bronze medal containment vessel 8 composition fixes cover and is mounted in cable and integral prefabricated rubber
Outside glue insulating part 5, wherein, pass through glass fiber impregnated epoxy resin material between the first bronze medal containment vessel 2 and the second bronze medal containment vessel 8
Insulation sleeve 4 be sealedly and fixedly connected integral, two copper containment vessels are fixedly set on two groups of cables of docking respectively, will be overall
The cover of preformed rubber insulating part 5 fills insulative water-proof glue 9 inside the protective housing inside protective housing, by protective housing and
The isolation of integral prefabricated rubber insulators is fixed, while in further preventing moisture from external penetration to integral prefabricated rubber insulators
Portion, play a part of water proof fire retardant.
Earthing rod 3 is equipped with the first bronze medal containment vessel 2 and the second bronze medal containment vessel 8, connection ground connection electricity on the earthing rod 3
Cable, cable metal sheath is drawn and is grounded, avoids damaging equipment and personnel.
The major insulation body 51 and stress cone 54 of the present embodiment are noted using nano-filler modified ethylene propylene diene rubber insulating materials
Rubber is molded.Wherein noting the major insulation body 51 after rubber shaping should hold tightly on the insulating barrier of the cable 1 in grading shield 7 and docking, pour
During note, integrated poured shaping after major insulation body 51 and stress cone 54, inner shield pipe 52, outer semiconductive set 53 are had good positioning.Using
Geometric type electric stress control methods improve Electric Field Distribution, by the major insulation using nano-filler modified ethylene propylene diene rubber insulating materials
Body 51 covers the shaping of 53 integrated injection rubbers with stress cone 54, inner shield pipe 52, outer semiconductive, efficiently solves dielectric interface
The accumulation problem of space charge, effectively improve the Electric Field Distribution of cable incision position.Wherein, stress cone 54 outside cable to partly leading
Electric layer fracture plays uniform electric field, and inner shield pipe 52 plays a part of to shield electric field to cable core connecting portion.
Above example is to explanation of the present utility model, not to restriction of the present utility model, the technology people of the industry
For member it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification is explanation
Concrete operating principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model can also
There are various changes and modifications, these changes and improvements are both fallen within claimed the scope of the utility model, and the utility model will
Protection domain is sought by appended claims and its equivalent thereof.
Claims (7)
1. one kind ± 500kV direct current cables Integral prefabricated type middle joints, it is characterised in that：Including integral prefabricated rubber-covered
Part (5), conductor connecting tube (6), grading shield (7) and protective housing,
The core inserting of docking cable is crimped on the both ends of conductor connecting tube (6), and grading shield (7) is sleeved on conductor connecting tube (6)
On, the integral prefabricated rubber insulators (5) tightly overlay on the outside of grading shield (7), integral prefabricated rubber insulators (5) bag
Include major insulation body (51), inner shield pipe (52), outer semiconductive set (53) and stress cone (54), inner shield pipe (52) suit
In grading shield (7) outside, the major insulation body (51) is overmolded onto on the outside of inner shield pipe (52), the outer semiconductive set (53) into
For type in major insulation body (51) outer surface, the stress cone (54) is molded over the both ends of insulating body, and is fixedly set in docking
On cable；
The protective housing fixes cover and is mounted in cable and integral prefabricated rubber insulators (5) outside, is filled inside the protective housing
Insulative water-proof glue (9).
2. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to claim 1, the protective housing
Including the first bronze medal containment vessel (2) and the second bronze medal containment vessel (8), pass through between the first bronze medal containment vessel (2) and the second bronze medal containment vessel (8)
Insulation sleeve (4) is sealedly and fixedly connected integral, and both ends are fixedly set on two groups of cables of docking respectively, by integral prefabricated rubber
Insulating part (5) cover is inside protective housing.
3. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to claim 2, first bronze medal is protected
Earthing rod (3) is equipped with protective case (2) and the second bronze medal containment vessel (8).
4. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to claim 1, the line of the cable
Core crimping is fixed in conductor connecting tube (6), is carried out between the conductor connecting tube (6) and grading shield (7) by copper braid over braid
Connection.
5. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to claim 4, the grading shield
(7) Hafu-type two halves structure is used.
6. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to any one of claim 1-5, institute
State major insulation body (51) and stress cone (54) uses nano-filler modified ethylene propylene diene monomer (EPDM) material.
7. one kind ± 500kV direct current cables Integral prefabricated type middle joints according to claim 6, the insulation sleeve
(4) material uses glass fiber impregnated epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721190183.3U CN207218211U (en) | 2017-09-15 | 2017-09-15 | One kind ± 500kV direct current cables Integral prefabricated type middle joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721190183.3U CN207218211U (en) | 2017-09-15 | 2017-09-15 | One kind ± 500kV direct current cables Integral prefabricated type middle joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207218211U true CN207218211U (en) | 2018-04-10 |
Family
ID=61821344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721190183.3U Active CN207218211U (en) | 2017-09-15 | 2017-09-15 | One kind ± 500kV direct current cables Integral prefabricated type middle joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207218211U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217229A (en) * | 2018-10-19 | 2019-01-15 | 特变电工昭和（山东）电缆附件有限公司 | A kind of novel high-pressure water proof fire retardant transition joint and its application method |
| CN109378620A (en) * | 2018-11-27 | 2019-02-22 | 长缆电工科技股份有限公司 | A kind of insulation of cable intermediate joint is quickly converted protective shell with straight-through |
| CN111682500A (en) * | 2020-06-28 | 2020-09-18 | 中科英华长春高技术有限公司 | 35kV separable connector for offshore wind power |
| CN113315086A (en) * | 2021-04-19 | 2021-08-27 | 宁波东方电缆股份有限公司 | High-voltage-grade crosslinked polyethylene cable insulation joint |
-
2017
- 2017-09-15 CN CN201721190183.3U patent/CN207218211U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217229A (en) * | 2018-10-19 | 2019-01-15 | 特变电工昭和（山东）电缆附件有限公司 | A kind of novel high-pressure water proof fire retardant transition joint and its application method |
| CN109217229B (en) * | 2018-10-19 | 2021-02-09 | 特变电工昭和（山东）电缆附件有限公司 | High-pressure waterproof flame-retardant intermediate joint and manufacturing method thereof |
| CN109378620A (en) * | 2018-11-27 | 2019-02-22 | 长缆电工科技股份有限公司 | A kind of insulation of cable intermediate joint is quickly converted protective shell with straight-through |
| CN109378620B (en) * | 2018-11-27 | 2024-06-28 | 长缆电工科技股份有限公司 | Insulation and direct-connection quick-switching protection shell for cable intermediate connector |
| CN111682500A (en) * | 2020-06-28 | 2020-09-18 | 中科英华长春高技术有限公司 | 35kV separable connector for offshore wind power |
| CN111682500B (en) * | 2020-06-28 | 2022-05-06 | 中科英华长春高技术有限公司 | 35kV separable connector for offshore wind power |
| CN113315086A (en) * | 2021-04-19 | 2021-08-27 | 宁波东方电缆股份有限公司 | High-voltage-grade crosslinked polyethylene cable insulation joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410000 No. 223, tongzipo West Road, Lugu Industrial Park, high tech Development Zone, Changsha, Hunan Patentee after: Long Cable Technology Group Co.,Ltd. Country or region after: China Address before: No. 223 Tongzipo West Road, Lugu Industrial Park, High tech Zone, Changsha City, Hunan Province, 410205 Patentee before: CHANGLAN CABLE ACCESSORIES Co.,Ltd. Country or region before: China |