CN202474790U - Prefabricated intermediate joint for cable - Google Patents
Prefabricated intermediate joint for cable Download PDFInfo
- Publication number
- CN202474790U CN202474790U CN201220128324XU CN201220128324U CN202474790U CN 202474790 U CN202474790 U CN 202474790U CN 201220128324X U CN201220128324X U CN 201220128324XU CN 201220128324 U CN201220128324 U CN 201220128324U CN 202474790 U CN202474790 U CN 202474790U
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- CN
- China
- Prior art keywords
- cable
- conductor
- screen cover
- conductor screen
- gold utensil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a prefabricated intermediate joint for a cable. The prefabricated intermediate joint comprises jointed cable cores, conductor connecting fittings, a cable insulating layer and conductor shielding cases, wherein the conductor connecting fittings are crimped outside the jointed cable cores, and are connected with the conductor shielding cases through copper braided straps; cable insulating grooves are formed in the conductor shielding cases, and are matched with the two ends of the conductor shielding cases; and the two ends of the conductor shielding cases are positioned in the cable insulating grooves. The insulating matching dimensions of the conductor shielding cases and the cable are fixed, so that uncontrollable factors are avoided; and a permissible joint mounting error space is enlarged, so that the product is reliable.
Description
Technical field
The utility model relates to high pressure, ultrahigh voltage power electric cable accessories gold utensil; Relate in particular to the power cable with cross-linked polyethylene insulation prefabricated transition joint (straight coupling and insulating joint) that is used for 110kV, 220kV, 330kV, 500kV and above electric pressure, main effect is that all press the conductor junction; Be suitable for nominal cross: 240mm
2And the middle of above power cable with cross-linked polyethylene insulation connects.
Background technology
The existing cable conductor connects all, and the pressure mode mainly contains:
(1) wrapped semiconductive self-adhesive tape;
(2) with shrinkage or pyrocondensation semiconductive pipe;
(3) all press with metallic shield.
Existing connected mode major defect has:
The surface of wrapped semiconductive self-adhesive tape is smooth inadequately, and the softer poor effect of all pressing of material;
Also softer with semiconductive tubing matter, all press effect to be not so good as metal material;
Metallic shield, material is harder, and is effective to the transition joint conformal, and conduction all presses effect fine.But most no positioning actions of at present popular grading shield or locating effect are bad, do not have the retraction effect that prevents to insulate, and two lobe grading shield connected modes connect with PVC tape or constant force spring, misplace easily during installation, have certain hidden danger.As depicted in figs. 1 and 2: each component names is following among the figure: 101 is cable jacket, and 102 is cable metal sheath, and 103 is insulation shield; 104 is cable insulation, and 105 are the transition joint main body, and 106 is radome; 107 is stress control tube, and 108 is the copper braid over braid, and 109 are conductor connection gold utensil; 110 is cable core, and 111 are the prefabricated rubber insulators of transition joint.Among the figure left and two arrows to the right represent the retraction direction of the prefabricated rubber insulators of transition joint.
Because when promoting the prefabricated rubber insulators of transition joint, the radome end that thereupon slips like Fig. 2, is the left end that slipped.Radome slides back formation than big slit, adapter body easy deformation.After the cable line operation, the cable heating, cable insulation has rebound phenomenon, so cable insulation may break away from stress control tube, causes puncture.
The utility model content
In order to solve problem in the prior art; The utility model provides the transition joint of a kind of cable prefabricated; It comprises that the cable core of butt joint, conductor connect gold utensil, cable insulation, conductor screen cover; The said conductor of the outer crimping of the cable core of butt joint connects gold utensil, and conductor connects gold utensil and is connected through the copper braid over braid with said conductor screen cover, and the conductor screen cover is provided with the cable insulation groove; Said cable insulation groove matches with the two ends of conductor screen cover, and the two ends of conductor screen cover are located in the cable insulation groove.
As the further improvement of the utility model, the conductor screen cover is two lobes, and two lobe conductor screen covers are connected by spring catch.
As the further improvement of the utility model, the copper braid over braid that said conductor connects between gold utensil and the conductor screen cover is fixed by screw.
The beneficial effect of the utility model is: the radome material is a metal material, is difficult for crimp, and is effective to the conformal of indirect head main body; Conductor connects gold utensil and after crimping, can prolong, and the prolongation amount is wayward, causes conductor screen cover length and cable core to open the stripping size and is difficult to corresponding.The utility model is taked first crimping, after open the mode that positions of stripping insulation tank, well solved this problem.
Conductor connects between gold utensil and the conductor screen cover and adopts the copper braid over braid to be connected, and is fixed by screw, makes its connection effect splendid, and the electric field equipotential is effective.
After the cable joint installation energising operation, cable can generate heat, and the insulation meeting of cable bounces back to two ends from incision position, if when amount of recovery is big, then cable insulation can break away from stress control tube, causes joint to puncture; The utility model is slotted cable insulation, is fixed by the conductor screen cover, the retraction problems of cable insulation after having avoided being heated.
Two lobes of at present popular metallic conductor radome are fixed by PVC tape or constant force spring;, the transition joint insulating body takes PVC tape to the stress tube outside easily when being installed; Or the easy scratch transition joint main body of constant force spring, have certain hidden danger, and the two lobe conductor screen covers of the utility model adopt spring catch to connect; Not only can avoid above problem, and connect better effects if.
In a word, conductor screen cover and cable insulation fit dimension are fixed, and have avoided uncontrollable factor, increased joint the permissible error space is installed, and make product more reliable.
Description of drawings
Fig. 1 is the cable intermediate joint structural representation of existing metallic shield;
Fig. 2 is the cable intermediate joint cutaway view of existing metallic shield;
Fig. 3 is first figure of the installation method of a kind of cable prefabricated of the utility model transition joint conductor screen cover;
Fig. 4 is the enlarged drawing of the A among Fig. 3;
Fig. 5 is second figure of the installation method of the utility model;
Fig. 6 is the 3rd figure of the installation method of the utility model;
Fig. 7 is the 4th figure of the installation method of the utility model;
Fig. 8 is the structural representation that two lobe conductor screen covers are connected by spring catch;
Fig. 9 is the general structure sketch map that the assembling of transition joint main body is accomplished.
Each component names is following among Fig. 3 to 9: cable jacket 201, cable metal sheath 202, insulation shield 203, cable insulation 204; Conductor screen cover 206, joint stress control tube 207, copper braid over braid 208, conductor connects gold utensil 209; Cable core 210, splice insulation main body 211, cable insulation groove 301, splicing ear and screw 302; Spring catch 303, pin-and-hole 304, joint stress cone 305, joint screen 306.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further specified.
As shown in Figure 9; The utility model provides the transition joint of a kind of cable prefabricated; It comprises that the cable core 210 of butt joint, conductor connect gold utensil 209, cable insulation 204, conductor screen cover 206, and the said conductor of the cable core 210 outer crimping of butt joint connects gold utensil 209, and conductor connects gold utensil 209 and is connected through copper braid over braid 208 with said conductor screen cover 206; The copper braid over braid 208 that said conductor connects between gold utensil 209 and the conductor screen cover 206 is fixed by screw; Conductor screen cover 206 is provided with cable insulation groove 301, and said cable insulation groove 301 matches with the two ends of conductor screen cover 206, and the two ends of conductor screen cover 206 are located in the cable insulation groove 301.Conductor screen cover 301 is two lobes, and two lobe conductor screen covers 301 are connected by spring catch 303.
Extremely shown in Figure 9 like Fig. 3, the installation method of a kind of cable prefabricated transition joint conductor screen cover that the utility model provides, it may further comprise the steps:
Cable is opened after stripping finishes dealing with, and core is connected gold utensil 209 with conductor carry out crimping, and two sections cable cores are connected.(Fig. 3 and Fig. 4)
After the cable core crimping is accomplished,, make it to match, and polish smooth with the conductor screen cover with the cable insulation groove 301 of core with private cable insulation exploitation cutter katal sizing on cable insulation 204.(Fig. 5)
Conductor is connected gold utensil and the conductor screen cover couples together with the copper braid over braid, and it is good that it is connected.(Fig. 6)
Two lobe conductor screen covers are connected by spring catch, two lobe conductor screen covers are buckled in the cable insulation groove, and two lobe radomes are connected closely.(Fig. 7 and Fig. 8)
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (3)
1. cable prefabricated transition joint; It is characterized in that: it comprises that the cable core of butt joint, conductor connect gold utensil, cable insulation, conductor screen cover; The said conductor of the outer crimping of the cable core of butt joint connects gold utensil, and conductor connects gold utensil and is connected through the copper braid over braid with said conductor screen cover, and the conductor screen cover is provided with the cable insulation groove; Said cable insulation groove matches with the two ends of conductor screen cover, and the two ends of conductor screen cover are located in the cable insulation groove.
2. a kind of cable prefabricated according to claim 1 transition joint is characterized in that: the conductor screen cover is two lobes, and two lobe conductor screen covers are connected by spring catch.
3. a kind of cable prefabricated according to claim 1 transition joint is characterized in that: the copper braid over braid that said conductor connects between gold utensil and the conductor screen cover is fixed by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220128324XU CN202474790U (en) | 2012-03-30 | 2012-03-30 | Prefabricated intermediate joint for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220128324XU CN202474790U (en) | 2012-03-30 | 2012-03-30 | Prefabricated intermediate joint for cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202474790U true CN202474790U (en) | 2012-10-03 |
Family
ID=46922918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220128324XU Expired - Lifetime CN202474790U (en) | 2012-03-30 | 2012-03-30 | Prefabricated intermediate joint for cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202474790U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623946A (en) * | 2012-03-30 | 2012-08-01 | 长园电力技术有限公司 | Cable prefabricated intermediate connector and method for mounting conductor shielding covers of cable prefabricated intermediate connector |
| CN102882179A (en) * | 2012-10-24 | 2013-01-16 | 陶柏洪 | 26/35kV or 27.5kV silicon rubber cold contraction type through joint |
| CN108666963A (en) * | 2018-05-10 | 2018-10-16 | 广东阿尔派新材料股份有限公司 | The special silicone rubber electric field stress control method of 220kV cable termination attachmentes |
-
2012
- 2012-03-30 CN CN201220128324XU patent/CN202474790U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623946A (en) * | 2012-03-30 | 2012-08-01 | 长园电力技术有限公司 | Cable prefabricated intermediate connector and method for mounting conductor shielding covers of cable prefabricated intermediate connector |
| CN102882179A (en) * | 2012-10-24 | 2013-01-16 | 陶柏洪 | 26/35kV or 27.5kV silicon rubber cold contraction type through joint |
| CN108666963A (en) * | 2018-05-10 | 2018-10-16 | 广东阿尔派新材料股份有限公司 | The special silicone rubber electric field stress control method of 220kV cable termination attachmentes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |