CN201336535Y - Pressing sheet for repairing cable insulation jacket - Google Patents
Pressing sheet for repairing cable insulation jacket Download PDFInfo
- Publication number
- CN201336535Y CN201336535Y CNU2009201130878U CN200920113087U CN201336535Y CN 201336535 Y CN201336535 Y CN 201336535Y CN U2009201130878 U CNU2009201130878 U CN U2009201130878U CN 200920113087 U CN200920113087 U CN 200920113087U CN 201336535 Y CN201336535 Y CN 201336535Y
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- CN
- China
- Prior art keywords
- insulation jacket
- preform layer
- cable insulation
- compressing tablet
- cable
- 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 - Fee Related
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Abstract
The utility model discloses a pressing sheet used for repairing a cable insulation jacket. The pressing sheet comprises at least two pressing sheet layers; when in repairing, each pressing sheet layer and the cable insulation jacket are fused and bound into a whole body; and all the pressing sheet layers are fused and bound together. The mechanical property and the electric property of a cable which is repaired by the pressing sheet can achieve the qualified standard completely, and the stable water resistance at a cut can be ensured.
Description
Technical field
The utility model relates to the cable insulation jacket recovery technique.
Background technology
The development of building along with national grid at present, the application of power cable is increasingly extensive.In the installation and operation of reality, for single-core high-voltage cable,, avoid being in operation because ground connection is improper because the existence of electromagnetic coupled must be adopted scientific and effective earthing mode to sheath, produce harmful circulation electricity, guarantee line security.Simultaneously; what we can not ignore is: the abominable or barbarous construction owing to construction environment in the cable construction process; do not have good protection equipment and measure,, will cause multipoint earthing in case cause the insulating sleeve serious damage; also will produce very big induction circulation on the aluminium sheath; increase electric energy loss, and cable temperature is increased, reduced transmission capacity; quicken the aging of insulating performance of cable, caused the serious consequence of cable thermal breakdown blast at last.Thus, cable jacket is high to electrical insulation properties, mechanical performance, water resistance requirement.
The cable scene of sheath breakage can't be by under the situation of direct current sheath withstand voltage test, if adopt the method for changing cable, though safety causes the high wasting of resources and influences the duration after cable laying is completed.Usually the wound remedial measure of taking just adopts the insulated type self-adhesive tape to put up 50% to wound and twines two to three layers repairing technique.Yet along with cable long-time self the heating that is in operation, the insulation property of self-adhesive tape, mechanical performance can descend thereupon, may produce uncertain space between adhesive tape and sheath loss, in case water inlet or moisture are invaded, to cause breakage aluminium cover ground connection at last, and form ground connection and bring out the hardly imaginable serious accident of cable line consequence.
The utility model content
Technical problem to be solved in the utility model just provides a kind of compressing tablet that is used to repair cable insulation jacket, use this compressing tablet that wound is repaired, can make cable machinery performance and electric property after the reparation reach required standard fully, and can guarantee the water resistance that the wound place is stable.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of compressing tablet that is used to repair cable insulation jacket, it is characterized in that: described compressing tablet comprises at least two laminated layer, each preform layer and cable insulation jacket fusion adhesion is an one during reparation, and each preform layer fusion is sticked together.
As improvement, described each preform layer outline is similar, and the preform layer area of top is greater than the preform layer area of its below.
Be slit into 45 degree inclined-planes owing to preferably cable insulation jacket is cut usually when repairing, therefore, described each preform layer sidewall also preferably is set to the slope of 45 degree.The fusion of being convenient to compressing tablet and sheath is connected.
Usually, the peripheral 3mm of increasing of below preform layer that is adjacent relatively of described top preform layer.Adapt with the slope of enclosing 45 degree in the wound, fusion adhesion effect is better.
As preferably, the thickness of described preform layer is 1.0mm.The preform layer of this thickness fusion adhesion best results in the practice.
Preferably, described preform layer is 3～5 layers.
The utility model is owing to adopted technique scheme, preform layer is connected with the cable insulation jacket fusion, also fusion connection between each preform layer, whole like this compressing tablet and sheath fusion are as a whole, cable machinery performance and electric property after the reparation reach required standard fully, and can guarantee the water resistance that the wound place is stable.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is applied to the structural representation of damaged cable for compressing tablet of the present utility model;
Fig. 2 be among Fig. 1 cable repairing the cutaway view at the utility model compressing tablet place.
Embodiment
Follow shown in 2 as Fig. 1, be used to repair the embodiment of the compressing tablet of cable insulation jacket for the utility model is a kind of, described compressing tablet 2 is repaired at the wound place of cable insulation jacket 1, and described compressing tablet comprises 5 laminated layer, the preform layer fusion is sticked together, and each preform layer and sheath fusion adhesion are one.Cable insulation jacket 1 wound internal face is cut and is cut the slope that angulation is 45 degree, and 5 laminated layer sidewall also also is set to the slope of 45 degree.As improvement, described each preform layer outline is similar, and the preform layer area of top is greater than the preform layer area of its below.And the preform layer periphery, below that described top preform layer is adjacent relatively increases 3mm.The thickness of each preform layer is 1.0mm.
The method that the compressing tablet of employing present embodiment is repaired the 110kv cable insulation jacket is as follows:
1, repairs making with the compressing tablet material.Select the model of cable for use according to the client, be not less than the vulcanizing press compacting insulating sleeve PVC or the PE compressing tablet material of 0.25 meganewton's nominal mold clamping force in advance, compressing tablet material thickness is 1.0mm.
2, the processing of wound.Take into full account the wound creepage distance of semiconductive polyolefine material on every side, wound is expanded wound and wound clean on every side with sheet glass (avoiding adopting the metal species blade).Enclosing in the semiconductive polyolefin after the expansion wound be 2.5cm apart from wound place slope peripheral distance, in wound, enclose to around be whittled into width for the 1.5cm angle be 45 the degree slopes, and estimate whole insulating sleeve treated side, confirm residual without any impurity and semiconductive polyolefin.
3, the cutting of compressing tablet material.Smear shape and the minimum area of opening up out the wound place with blank sheet of paper and soft drawing pen, then the compressing tablet material of making in advance is cut into A, B, C, D, an E5 preform layer of corresponding shape and the increase of area graded, the peripheral 3mm that increases of adjacent preform layer).
4, layering welding.At first an end of A sheet is the end that 45 degree angles are close to the wound place, according to the insulating sleeve material character, Plastic Welding rifle outlet temperature is transferred to 150 ℃-180 ℃, muzzle is apart from wound face 3cm, and muzzle evenly heats facing to angle.At thermodynamic activity, it is softening and the adhesion combination applies about 1.75N/cm with clean hand hammer on the adhesion plane simultaneously that fusion takes place two frostings that are heated in the angle
2, making between two plastic covers, face and the sheath body interface thoroughly, extruding adhesion fusion bonded becomes a perfection and seamless integral body; Weld layer by layer with the method B sheet successively, C sheet, D sheet, E sheet then, between whole and the sheet, between sheet and the cable cover(ing) body interface fully extruding adhesion fusion bonded be a perfection and seamless permanent integral body.In whole heating and fusing process, to guarantee temperature the reasonable interval scope, avoid making repair place plastics variable color, aging, decline that be full of cracks causes insulation property, mechanical performance because of burning.
5, the processing of face of weld.Face of weld is carried out shaving with sheet glass along the trough crest of cable, carry out grinding process with No. 120, No. 240, No. 320 rubbers to repairing the surface successively then, until consistent with the cable cover(ing) body surface; At last, evenly smear, cable cover(ing) surface conductance layer is connected fully with graphite powder.
Used the utility model compressing tablet and adopted above-mentioned layering recovery technique that damaged cable is repaired, make between preform layer and the preform layer, between preform layer and the cable cover(ing) interface fully extruding adhesion fusion bonded become a perfection and seamless permanent integral body.The cable insulation jacket after the reparation and the integral body of insulating sleeve extrude indifference, thus can guarantee cable insulation jacket before and after repairing electric, the consistency of mechanical performance and the permanent waterproof performance of guaranteeing insulating sleeve.
Claims (6)
1, a kind of compressing tablet that is used to repair cable insulation jacket is characterized in that: described compressing tablet (2) comprises at least two laminated layer, and each preform layer and cable insulation jacket (1) fusion adhesion is an one during reparation, and each preform layer fusion is sticked together.
2, a kind of compressing tablet that is used to repair cable insulation jacket according to claim 1 is characterized in that: described each preform layer outline is similar, and the preform layer area of top is greater than the preform layer area of its below.
3, a kind of compressing tablet that is used to repair cable insulation jacket according to claim 2 is characterized in that: described each preform layer sidewall also preferably is set to the slope of 45 degree.
4, a kind of compressing tablet that is used to repair cable insulation jacket according to claim 3 is characterized in that: the peripheral 3mm that increases of the below preform layer that described top preform layer is adjacent relatively.
5, a kind of compressing tablet that is used to repair cable insulation jacket according to claim 4, it is characterized in that: the thickness of described preform layer is 1.0mm.
6, according to any described a kind of compressing tablet that is used to repair cable insulation jacket in the claim 1 to 5, it is characterized in that: described preform layer is 3～5 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201130878U CN201336535Y (en) | 2009-01-21 | 2009-01-21 | Pressing sheet for repairing cable insulation jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201130878U CN201336535Y (en) | 2009-01-21 | 2009-01-21 | Pressing sheet for repairing cable insulation jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336535Y true CN201336535Y (en) | 2009-10-28 |
Family
ID=41288197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201130878U Expired - Fee Related CN201336535Y (en) | 2009-01-21 | 2009-01-21 | Pressing sheet for repairing cable insulation jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336535Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361271A (en) * | 2011-08-04 | 2012-02-22 | 江苏圣安电缆有限公司 | Method for repairing damage of external shield of medium and high voltage cable |
| CN106786230A (en) * | 2017-02-04 | 2017-05-31 | 江西理工大学 | A kind of electric wire stitching devices |
| CN107230959A (en) * | 2017-06-29 | 2017-10-03 | 国网河南省电力公司济源供电公司 | A kind of bus insulation sheath auxiliary installation device |
| CN108162438A (en) * | 2017-12-27 | 2018-06-15 | 南京华信藤仓光通信有限公司 | A kind of mold for flexible optical cable sheath reparation |
-
2009
- 2009-01-21 CN CNU2009201130878U patent/CN201336535Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361271A (en) * | 2011-08-04 | 2012-02-22 | 江苏圣安电缆有限公司 | Method for repairing damage of external shield of medium and high voltage cable |
| CN106786230A (en) * | 2017-02-04 | 2017-05-31 | 江西理工大学 | A kind of electric wire stitching devices |
| CN107230959A (en) * | 2017-06-29 | 2017-10-03 | 国网河南省电力公司济源供电公司 | A kind of bus insulation sheath auxiliary installation device |
| CN108162438A (en) * | 2017-12-27 | 2018-06-15 | 南京华信藤仓光通信有限公司 | A kind of mold for flexible optical cable sheath reparation |
| CN108162438B (en) * | 2017-12-27 | 2019-09-13 | 南京华信藤仓光通信有限公司 | A kind of mold for flexible optical cable sheath reparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20130121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |