CN107769147A - A kind of 35kv shrinkages joint - Google Patents
A kind of 35kv shrinkages joint Download PDFInfo
- Publication number
- CN107769147A CN107769147A CN201711164142.1A CN201711164142A CN107769147A CN 107769147 A CN107769147 A CN 107769147A CN 201711164142 A CN201711164142 A CN 201711164142A CN 107769147 A CN107769147 A CN 107769147A
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- Prior art keywords
- cable
- insulating body
- cold
- layer
- semi
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
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- Cable Accessories (AREA)
Abstract
The invention discloses a kind of 35kv shrinkages joint, the shrinkage joint includes connecting tube, semi-conductive tape, insulating body, cold-shrinking intermediate joint pipe, semi-conductive layer, constant force spring, copper shield, cable inner sheath, inner protective layer, copper litz wire, armor, external protection and cable jacket, the insulating body injects sulfidization molding using silicon rubber in factory, each part of shrinkage joint is to use Material injection sulfidization molding identical with the insulating body, again through expanding, it is lined with the part that plastic support forms various cable accessories, wherein, the connecting tube is used to connect two cable conductors, insulating body is extruded with every cable conductor and positioned at the both sides of the connecting tube and the semi-conductive tape.Beneficial effect：The present invention has the characteristics that small volume, in light weight, safe and reliable, easy for installation, stabilization while easy for installation between holding each annex of cable.
Description
Technical field
The present invention relates to power cable connector field, it particularly relates to a kind of 35kv shrinkages joint.
Background technology
Chilling shrink type cable accessory is to be injected using elastomeric material (conventional has silicon rubber and EP rubbers) in factory
Sulfidization molding, then through part that is expanding, being lined with the various cable accessories of plastic spiral supporter composition.During in-site installation, by these
Predilation part is enclosed on cable end piece or joint after treatment, extracts the plastic spiral bar (supporter) of internal support, pressure out
The cable accessory tightly formed on cable insulation.Because it is to lean on elastic recovery force at normal temperatures, rather than as thermal contraction electricity
The fiery heat shrink of cable fittings, therefore it is commonly called as cold events cable accessory.
Transition joint conductor connection reason is to be crimped two sections of separated cable conductors with conductor connecting tube in the market
And link together, it is extremely concordant with insulation in the outside of connecting tube winding semi-conductive tape after conductor connection, due to installation personnel element
Matter is uneven, and when drawing support bar, support bar brings semi-conductive tape into insulating barrier with semi-conductive tape friction, causes product transporting
Puncture during row, the semi-conductive tape viscosity of in the market is uneven in addition, and the semi-conductive tape wound may dissipate when mounted
Open, bringing insulating barrier into causes product quality accident occur.
The problem of in correlation technique, effective solution is not yet proposed at present.
The content of the invention
The problem of in correlation technique, the present invention proposes a kind of 35kv shrinkages joint, to overcome existing correlation technique institute
Existing above-mentioned technical problem.
The technical proposal of the invention is realized in this way：
A kind of 35kv shrinkages joint, the shrinkage joint include connecting tube, semi-conductive tape, insulating body, cold-shrinking intermediate joint
Pipe, semi-conductive layer, constant force spring, copper shield, cable inner sheath, inner protective layer, copper litz wire, armor, external protection and
Cable jacket, the insulating body inject sulfidization molding using silicon rubber in factory, and each part of shrinkage joint is
Using Material injection sulfidization molding identical with the insulating body, then through it is expanding, being lined with plastic support, to form various cables attached
The part of part, wherein, the connecting tube is used to connect two cable conductors, on every cable conductor and positioned at the connecting tube and
The both sides of the semi-conductive tape are extruded with insulating body, the semi-conductive tape be intertwined and connected with the connecting tube and with the connection
The insulating body external diameter of pipe side flushes, and the cold-shrinking intermediate joint pipe is arranged at the connecting tube, the semi-conductive tape
Integrally-built cable accessory is formed with the insulating body outer layer, the semi-conductive layer is arranged at the cold-shrinking intermediate joint pipe
Outer surface, the constant force spring be disposed in proximity to the copper shield and positioned at the cold-shrinking intermediate joint pipe outer surface,
The copper shield is arranged at the periphery of cable conductor and twined positioned at the side of the cold-shrinking intermediate joint pipe, the copper litz wire
The Outboard Sections surface of the cold-shrinking intermediate joint pipe is wound on, the periphery of the cold-shrinking intermediate joint pipe is provided with integrally-built
Protective layer, the periphery of the inner protective layer are provided with integrally-built armor, and the periphery of the armor is provided with integrally-built
External protection, the cable jacket are respectively sleeved on the inside of the both ends of the external protection；
The cold-shrinking intermediate joint pipe includes internal layer and outer layer, the inwall of the cold-shrinking intermediate joint pipe and in described
Be provided with cavity between layer and outer layer, the inside of the internal layer and the outer layer is correspondingly arranged on some first rail cavities and the respectively
Two rail cavities, the inside of first rail cavity and the second rail cavity are respectively equipped with the first lining and the second lining, the plastics
Supporter is hollow cylinder and to match with the cavity, the inner surface of the plastic support and outer surface respectively with it is described
First rail cavity and second rail cavity are correspondingly arranged on the first guide rail and the second guide rail.
Further, the silicon rubber that the shrinkage joint uses is flame retardant type RTV foam silicone rubber DC3-6548.
Further, the insulating body injects sulfidization molding, the shrinkage joint using EP rubbers in factory
Each part is to use Material injection sulfidization molding identical with the insulating body, then through it is expanding, be lined with plastic support form it is each
The part of kind cable accessory.
Further, some first rail cavities are distributed along the cold internal layer even circumferential, some second guide rails
Chamber is uniformly distributed along the outer periphery.
Further, the section of first rail cavity is inverted T-shaped, and the section of second rail cavity is T-shaped, described
One lining and second lining bond between the first rail cavity and the second rail cavity respectively.
Further, the internal layer is closed close to one end of the connecting tube with the outer layer and connected, the internal layer and institute
The other end for stating outer layer is provided with the opening of the corresponding plastic support.
Further, the shrinkage joint also includes being arranged on the PVC bands on the inside of the inner protective layer and the waterproof in outside
Band.
Beneficial effects of the present invention：By using mechanical means by the silicon rubber of flexible characteristic in elastic model in factory
Enclose it is interior strut in advance, be inserted in plastic support and fixed, the various cables for injecting sulfidization molding in factory using silicon rubber are attached
The part of part has lasting radial pressure to cable body, and material contracting with heat can be avoided to produce gas in insulating barrier when expanding with heat and contract with cold
Bubble, there is small volume, in light weight, safe and reliable, by the inside of shrinkage joint intervalve setting internal layer and outer layer,
The cavity inside that internal layer and outer layer are formed is inserted in plastic support, sets first to lead by plastic support inner surface and outer surface
Rail and the second guide rail, coordinate internal layer and the first rail cavity and the first lining and the second rail cavity and the second lining inside outer layer,
Reaching the purpose of support while keeping the stability between each annex of cable, solving when support bar is drawn in installation, support bar
Semi-conductive tape is brought into insulating barrier with semi-conductive tape friction, it is the problem of causing product to puncture in the process of running, easy for installation.
Fire-retardant, heat-resisting, cold-resistant, the effect such as wear-resisting and corrosion-resistant, the setting cooperation silicon rubber of water blocking tape are played in the setting of PVC bands
Elastic material makes shrinkage joint have good water proofing property, extend each annex of cable uses the longevity radial pressure of cable
Life.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of internal structure schematic diagram of 35kv shrinkages joint according to embodiments of the present invention；
Fig. 2 is the internal structure signal of cold-shrinking intermediate joint pipe in a kind of 35kv shrinkages joint according to embodiments of the present invention
Figure；
Fig. 3 is plastics composite and cold-shrinking intermediate joint pipe in a kind of 35kv shrinkages joint according to embodiments of the present invention
Sectional view；
Fig. 4 is the sectional view of inner protective layer in a kind of 35kv shrinkages joint according to embodiments of the present invention.
In figure：
1st, connecting tube；2nd, semi-conductive tape；3rd, insulating body；4th, cold-shrinking intermediate joint pipe；5th, semi-conductive layer；6th, constant force bullet
Spring；7th, copper shield；8th, cable inner sheath；9th, inner protective layer；10th, copper litz wire；11st, armor；12nd, external protection；13rd, it is electric
Cable oversheath；14th, plastic support；15th, internal layer；16th, outer layer；17th, cavity；18th, the first rail cavity；19th, the second rail cavity；
20th, the first lining；21st, the second lining；22nd, the first guide rail；23rd, the second guide rail；24th, it is open；25th, PVC bands；26th, water blocking tape.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained, belong to what the present invention protected
Scope.
According to an embodiment of the invention, there is provided a kind of 35kv shrinkages joint.
As Figure 1-4, a kind of 35kv shrinkages joint according to embodiments of the present invention, the shrinkage joint include connecting tube 1,
Semi-conductive tape 2, insulating body 3, cold-shrinking intermediate joint pipe 4, semi-conductive layer 5, constant force spring 6, copper shield 7, cable inner sheath
8th, inner protective layer 9, copper litz wire 10, armor 11, external protection 12 and cable jacket 13, the insulating body 3 are to use
Silicon rubber injects sulfidization molding in factory, and each part of shrinkage joint is to use to note with the 3 identical material of insulating body
Penetrate sulfidization molding, then through it is expanding, be lined with the part that plastic support 14 forms various cable accessories, wherein, the connecting tube 1 is used
It is extruded with two cable conductors of connection, every cable conductor and positioned at the both sides of the connecting tube 1 and the semi-conductive tape 2
Insulating body 3, the semi-conductive tape 2 and the connecting tube 1 be intertwined and connected and with the insulating body of the side of connecting tube 1
3 external diameters are flushed, and the cold-shrinking intermediate joint pipe 4 is arranged at outside the connecting tube 1, the semi-conductive tape 2 and the insulating body 3
Layer forms integrally-built cable accessory, and the semi-conductive layer 5 is arranged at the outer surface of the cold-shrinking intermediate joint pipe 4, described
Constant force spring 6 is disposed in proximity to the copper shield 7 and positioned at the outer surface of the cold-shrinking intermediate joint pipe 4, the copper shield
Layer 7 is arranged at the periphery of cable conductor and is wrapped in institute positioned at the side of the cold-shrinking intermediate joint pipe 4, the copper litz wire 10
The Outboard Sections surface of cold-shrinking intermediate joint pipe 4 is stated, the periphery of the cold-shrinking intermediate joint pipe 4 is provided with integrally-built interior protection
Layer 9, the periphery of the inner protective layer 9 is provided with integrally-built armor 11, and the periphery of the armor 11 is provided with overall structure
External protection 12, the cable jacket 13 is respectively sleeved on the inside of the both ends of the external protection 12；
The cold-shrinking intermediate joint pipe 4 includes internal layer 15 and outer layer 16, the inwall of the cold-shrinking intermediate joint pipe 4 and is located at
Cavity 17 is provided between the internal layer 15 and outer layer 16, if the inside of the internal layer 15 and the outer layer 16 is correspondingly arranged on respectively
Dry first rail cavity 18 and the second rail cavity 19, the inside of the rail cavity 19 of the first rail cavity 18 and second are respectively equipped with first
The lining 21 of lining 20 and second, the plastic support 14 match for hollow cylinder and with the cavity 17, the plastics
The inner surface of supporter 14 and outer surface are correspondingly arranged on the with first rail cavity 18 and second rail cavity 19 respectively
One guide rail 22 and the second guide rail 23.
In addition, in one embodiment, the silicon rubber that the shrinkage joint uses is flame retardant type room temperature vulcanization foam silicon rubber
Glue DC3-6548.Using the program, make cable shrinkage joint that there is good anti-flammability.
In addition, in one embodiment, the insulating body 3 is that sulfidization molding is injected in factory using EP rubbers,
Each part of shrinkage joint is to use Material injection sulfidization molding identical with the insulating body 3, then through it is expanding, be lined with plastics
Supporter 14 forms the part of various cable accessories.
In addition, in one embodiment, some first rail cavities 18 are distributed along the cold even circumferential of internal layer 15, if
Second rail cavity 19 is done to be distributed along the even circumferential of outer layer 16.Using the program, extraction can be facilitated to mould when mounted
Expect supporter 14, it is easy for installation.
In addition, in one embodiment, the section of first rail cavity 18 is inverted T-shaped, second rail cavity 19
Section is T-shaped, and first lining 20 and second lining 21 are respectively between the first rail cavity 18 and the second rail cavity 19
Bond.Reinforcement, while convenient extraction can be played a part of using the setting of the program the first lining 20 and the second lining 21
Plastic support bar 14.
In addition, in one embodiment, the internal layer 15 closes with the outer layer 16 close to one end of the connecting tube 1 to be connected
Connect, the internal layer 15 is provided with the opening 24 of the corresponding plastic support 14 with the other end of the outer layer 16.
In addition, in one embodiment, the shrinkage joint also includes the PVC bands for being arranged on the inner side of inner protective layer 9
25 and the water blocking tape 26 in outside.Using the program, the settings of PVC bands 25 play it is fire-retardant, heat-resisting, cold-resistant, it is wear-resisting and corrosion-resistant etc.
Act on, the setting of water blocking tape 26 coordinates silicon rubber elastic material to the radial pressure of cable, shrinkage joint is prevented with good
It is water-based, extend the service life of each annex of cable.
In summary, by means of the above-mentioned technical proposal of the present invention, by using mechanical means will be flexible in factory
The silicon rubber of characteristic struts in advance in elastic range, is inserted in plastic support 14 and is fixed, and is noted using silicon rubber in factory
The part for penetrating the various cable accessories of sulfidization molding has lasting radial pressure to cable body, can avoid material contracting with heat in heat expansion
Bubble is produced during shrinkage in insulating barrier, there is small volume, in light weight, safe and reliable, by shrinkage joint intervalve 4
Inside internal layer 15 and outer layer 16 are set, be inserted in plastic support 14 inside the cavity 17 that internal layer 15 and outer layer 16 are formed, pass through
The inner surface of plastic support 14 sets the first guide rail 22 and the second guide rail 23 with outer surface, coordinates inside internal layer 15 and outer layer 16
First rail cavity 18 and the first lining 20 and the second rail cavity 19 and the second lining 21, reaching the purpose of support while keeping electricity
Stability between each annex of cable, solve when support bar is drawn in installation, support bar and semi-conductive tape friction are by semi-conductive tape band
Enter insulating barrier, it is the problem of causing product to puncture in the process of running, easy for installation；
Fire-retardant, heat-resisting, cold-resistant, the effect such as wear-resisting and corrosion-resistant, the setting cooperation silicon rubber of water blocking tape are played in the setting of PVC bands
Elastic material makes shrinkage joint have good water proofing property, extend each annex of cable uses the longevity radial pressure of cable
Life.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (7)
1. a kind of 35kv shrinkages joint, the shrinkage joint is included in connecting tube (1), semi-conductive tape (2), insulating body (3), shrinkage
Between junction block (4), semi-conductive layer (5), constant force spring (6), copper shield (7), cable inner sheath (8), inner protective layer (9), copper
Litzendraht wire (10), armor (11), external protection (12) and cable jacket (13), it is characterised in that the insulating body (3)
It is that sulfidization molding is injected in factory using silicon rubber, each part of shrinkage joint is to use and the insulating body (3) phase
With Material injection sulfidization molding, then through part that is expanding, being lined with the various cable accessories of plastic support (14) composition, wherein, institute
State connecting tube (1) be used for connect two cable conductors, on every cable conductor and be located at the connecting tube (1) and the semiconductive
The both sides of band (2) are extruded with insulating body (3), the semi-conductive tape (2) be intertwined and connected with the connecting tube (1) and with the company
The insulating body (3) external diameter of adapter (1) side flushes, and the cold-shrinking intermediate joint pipe (4) is arranged at the connecting tube
(1), the semi-conductive tape (2) and the insulating body (3) outer layer form integrally-built cable accessory, the semi-conductive layer
(5) outer surface of the cold-shrinking intermediate joint pipe (4) is arranged at, the constant force spring (6) is disposed in proximity to the copper shield
(7) and positioned at the cold-shrinking intermediate joint pipe (4) outer surface, the copper shield (7) be arranged at cable conductor periphery and
Positioned at the side of the cold-shrinking intermediate joint pipe (4), the copper litz wire (10) is wrapped in the cold-shrinking intermediate joint pipe (4)
Outboard Sections surface, the periphery of the cold-shrinking intermediate joint pipe (4) are provided with integrally-built inner protective layer (9), the interior protection
The periphery of layer (9) is provided with integrally-built armor (11), and the periphery of the armor (11) is provided with integrally-built outer protection
Layer (12), the cable jacket (13) are respectively sleeved on the inside of the both ends of the external protection (12)；
The cold-shrinking intermediate joint pipe (4) includes internal layer (15) and outer layer (16), the inwall of the cold-shrinking intermediate joint pipe (4) and
Cavity (17), the internal layer (15) and the inside points of the outer layer (16) are provided between the internal layer (15) and outer layer (16)
Some first rail cavities (18) and the second rail cavity (19), first rail cavity (18) and the second rail cavity are not correspondingly arranged on
(19) inside is respectively equipped with the first lining (20) and the second lining (21), the plastic support (14) be hollow cylinder and
Match with the cavity (17), the inner surface of the plastic support (14) and outer surface respectively with first rail cavity
(18) and second rail cavity (19) is correspondingly arranged on the first guide rail (22) and the second guide rail (23).
A kind of 2. 35kv shrinkages joint according to claim 1, it is characterised in that the silicon rubber that the shrinkage joint uses
For flame retardant type RTV foam silicone rubber DC3-6548.
3. a kind of 35kv shrinkages joint according to claim 1, it is characterised in that the insulating body (3) is to use second
Third rubber injects sulfidization molding in factory, and each part of shrinkage joint is to use material identical with the insulating body (3)
Sulfidization molding is injected, then through part that is expanding, being lined with the various cable accessories of plastic support (14) composition.
A kind of 4. 35kv shrinkages joint according to claim 1, it is characterised in that some first rail cavity (18) edges
Cold internal layer (15) the even circumferential distribution, some second rail cavities (19) are distributed along the outer layer (16) even circumferential.
A kind of 5. 35kv shrinkages joint according to claim 1, it is characterised in that the section of first rail cavity (18)
For inverted T-shaped, the section of second rail cavity (19) is T-shaped, and first lining (20) and second lining (21) are respectively
Bonded between the first rail cavity (18) and the second rail cavity (19).
6. a kind of 35kv shrinkages joint according to claim 1, it is characterised in that the internal layer (15) and the outer layer
(16) close to the closure connection of one end of the connecting tube (1), the other end of the internal layer (15) and the outer layer (16) is provided with pair
Answer the opening (24) of the plastic support (14).
7. a kind of 35kv shrinkages joint according to claim 1, it is characterised in that the shrinkage joint also includes being arranged on
The water blocking tape (26) of PVC bands (25) and outside on the inside of the inner protective layer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164142.1A CN107769147B (en) | 2017-11-21 | 2017-11-21 | 35kv cold-shrink joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164142.1A CN107769147B (en) | 2017-11-21 | 2017-11-21 | 35kv cold-shrink joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107769147A true CN107769147A (en) | 2018-03-06 |
| CN107769147B CN107769147B (en) | 2020-02-07 |
Family
ID=61279999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711164142.1A Active CN107769147B (en) | 2017-11-21 | 2017-11-21 | 35kv cold-shrink joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107769147B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308448A (en) * | 2009-02-05 | 2012-01-04 | 3M创新有限公司 | Splice assembly with shield sock |
| CN203103897U (en) * | 2013-01-29 | 2013-07-31 | 江苏澳能电力电缆附件有限公司 | Cold shrink intermediate connector |
| CN205646759U (en) * | 2016-03-29 | 2016-10-12 | 宁波经济技术开发区技特电力电缆附件有限公司 | Shrinkage cable intermediate head |
| CN206322514U (en) * | 2016-12-16 | 2017-07-11 | 苏州鼎鑫冷热缩材料有限公司 | Connection new structure in the middle of a kind of shrinkage |
-
2017
- 2017-11-21 CN CN201711164142.1A patent/CN107769147B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308448A (en) * | 2009-02-05 | 2012-01-04 | 3M创新有限公司 | Splice assembly with shield sock |
| CN203103897U (en) * | 2013-01-29 | 2013-07-31 | 江苏澳能电力电缆附件有限公司 | Cold shrink intermediate connector |
| CN205646759U (en) * | 2016-03-29 | 2016-10-12 | 宁波经济技术开发区技特电力电缆附件有限公司 | Shrinkage cable intermediate head |
| CN206322514U (en) * | 2016-12-16 | 2017-07-11 | 苏州鼎鑫冷热缩材料有限公司 | Connection new structure in the middle of a kind of shrinkage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107769147B (en) | 2020-02-07 |
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Address after: 236000 intersection of Tang Wang Road and Wei three road in Bo Wu modern industrial park, Bozhou, Anhui Patentee after: Anhui yifala Electric Co.,Ltd. Address before: 236800 Tangwang Avenue and Weisan Road Intersection of Bozhou Bowu Modern Industrial Park, Anhui Province Patentee before: ANHUI YIFALA ELECTRICAL Co.,Ltd. |