CN102013288A - Method for effectively preventing sheath of high-pressure cross-linked cable from swelling - Google Patents
Method for effectively preventing sheath of high-pressure cross-linked cable from swelling Download PDFInfo
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- CN102013288A CN102013288A CN 201010501103 CN201010501103A CN102013288A CN 102013288 A CN102013288 A CN 102013288A CN 201010501103 CN201010501103 CN 201010501103 CN 201010501103 A CN201010501103 A CN 201010501103A CN 102013288 A CN102013288 A CN 102013288A
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Abstract
The invention discloses a method for effectively preventing a sheath of a high-pressure cross-linked cable from swelling, which comprises the following steps of: screwing a valve core out by using a head sealing cap with an air nozzle, bending the valve core to form an angle of 15 to 60 degrees, putting the valve core back to the air nozzle of the head sealing cap, flatly sawing a cable socket, sleeving the head sealing cap on the cable socket, and sealing a joint. The head sealing cap with the air nozzle is creatively applied to the high-pressure cross-linked cable, external water can be prevented from entering the modified cable and gas in the cable can be discharged from the air nozzle at any time to balance internal air pressure and external air pressure in the cable, so that the sheath is not swelled. The technology is easy and convenient to operate, has low cost, solves the problem of swelling of the sheath outside the high-pressure cross-linked cable of 3.6/6KV or above, and the problems of long production period, high energy consumption and the like in the prior art, and has good application prospect.
Description
Technical field
The invention belongs to electric wire manufacturing technology field, be specifically related to a kind of method that can effectively prevent 3.6/6KV and above high-pressure cross-linking cable jacket expansion.
Background technology:
3.6/6KV and above crosslinked cable in cable production, inspected the back and cable quality is caused have a strong impact on for anti-sealing enters cable, generally all cable socket is sealed with tack pyrocondensation end socket cap.Owing to contain the DCP crosslinking agent in the employed insulating material when cable is produced; its consumption changes and disperses uneven problem to avoid; therefore regular meeting causes and decomposes insufficient at the crosslinked step D CP of cable the time; after processing, inspected the sealing termination, still decomposes finished cable in continuation; produce a large amount of gases; cable cover(ing) (generally being thermoplastic) is produced pressure, make jacket expansion, cable quality is impacted.
In the prior art, for solving the influence that cable cover(ing) expands cable quality is caused, two kinds of methods are arranged at present: the one, employing is put into drying room to insulated wire cores and is heated after crosslinked operation is finished, residual DCP is decomposed, thereby the gas that is produced by residual DCP decomposition behind following process process and sealing termination significantly reduces, and reaches the not dilatable purpose of cable cover(ing).There is following problem in the method: (1) need take the bigger place resource of workshop; (2) drop into special equipment, increase the cost expenditure; (3) consumes energy.The 2nd, finish the relief insulated wire cores in crosslinked operation and suspend processing, placed for 1～2 week, residual DCP is further decomposed, thereby reduce the gas that sealing back, termination produces.It is long that the method semi-finished product are put the time, bigger to the influence at delivery date, the situation of customer requirements often occurs can't satisfying delivery date.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, the method that a kind of effect is remarkable, with low cost, can effectively prevent the high-pressure cross-linking cable jacket expansion is provided.
Purpose of the present invention is achieved through the following technical solutions.
A kind of method that effectively prevents the high-pressure cross-linking cable jacket expansion is characterized in that: use the end socket cap of gas nozzle, the valve inside of back-outing is 15 °～60 ° with the valve inside bending, then valve inside is reinstalled on the end socket cap valve; Saw flat cable termination is connected on the end socket cap sleeve on the cable socket sealed interface.
Further, before socket end socket cap, on cable socket, twine 2～3 layers of nonwoven fabrics that blocks water, can promote the water resistance at end socket place better.
Preferred 30 degree of valve inside angle bending.
The gap of valve inside and metal steel bushing is at 0.1～0.3mm.
The preferred heated sealant of sealing means.
Compared with prior art, the present invention has the following advantages:
1, the present invention's cable end socket cap that will have a valve is applied on the high-pressure cross-linking cable initiatively, can prevent that through improved cable extraneous moisture from entering, gas in the cable is discharged from valve at any time, reach the cable inside and outside air pressure balance, thereby guarantee that sheath does not expand.
2, twine the nonwoven fabrics that blocks water in the junction of end socket cap and cable socket, can make moisture effect better.
3, the gap of control valve inside and cover, and the angle of giving vent to anger of adjustment valve can make gas discharge easily, can stop moisture to enter cable preferably again simultaneously.
4, the present invention is easy and simple to handle, with low cost, has both solved the problem that 3.6/6KV and above high-pressure cross-linking cable oversheath expand, and has overcome problems such as the production cycle is long in the prior art, energy resource consumption is big again, has a good application prospect.
Embodiment
Below in conjunction with embodiment method of the present invention is described in further detail, but embodiment is not to be limitation of the invention.Any conversion based on training centre of the present invention is made all falls into protection scope of the present invention.
Embodiment 1
A kind of method that effectively prevents the high-pressure cross-linking cable jacket expansion.The cable that is up to the standards is sawed the flat cable termination by length requirement, select the suitable gas nozzle end socket cap of external diameter, the valve inside of back-outing, with tissue paper valve inside is polished, the gap that makes valve inside and cover is at 0.3mm, and the valve inside bending is 15 °, then valve inside reinstalled on the end socket cap valve, the end socket cap sleeve is connected on the cable socket, and carries out heated sealant with blowtorch and get final product.
Embodiment 2
Repeat embodiment 1, following difference is arranged: the gap of valve inside and cover is at 0.2mm, and the valve inside bending is 30 °.
Embodiment 3
Repeat embodiment 1, following difference is arranged: the gap of valve inside and cover is at 0.1mm, and the valve inside bending is 60 °.
Embodiment 4
Repeat embodiment 1, following difference is arranged: on cable socket, twine earlier 2～3 layers of nonwoven fabrics that blocks water, socket end socket cap again.
Gap by suitable increase valve inside and cover, allow valve inside not be in cover central authorities, simultaneously valve inside is processed into the inclination form, realization can prevent that extraneous moisture from entering cable, gas in the cable is got rid of from valve at any time, reach the cable inside and outside air pressure balance, sheath is not produced pressure, thereby guarantee that sheath does not expand.The end socket cap near the place pad that valve is installed which floor nonwoven fabrics that blocks water, can make moisture effect better.
Claims (5)
1. method that effectively prevents the high-pressure cross-linking cable jacket expansion is characterized in that: use the end socket cap of gas nozzle, the valve inside of back-outing is 15 °～60 ° with the valve inside bending, then valve inside is reinstalled on the end socket cap valve; Saw flat cable termination is connected on the end socket cap sleeve on the cable socket sealed interface.
2. the method that effectively prevents the high-pressure cross-linking cable jacket expansion according to claim 1 is characterized in that: twine 2～3 layers of nonwoven fabrics that blocks water before socket end socket cap on cable socket.
3. the method that effectively prevents the high-pressure cross-linking cable jacket expansion according to claim 1 is characterized in that: the valve inside angle bending is 30 degree.
4. the method that effectively prevents the high-pressure cross-linking cable jacket expansion according to claim 1 is characterized in that: the gap of valve inside and metal steel bushing is at 0.1～0.3mm.
5. the method that effectively prevents the high-pressure cross-linking cable jacket expansion according to claim 1 is characterized in that: sealing means adopts heated sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501103 CN102013288A (en) | 2010-10-09 | 2010-10-09 | Method for effectively preventing sheath of high-pressure cross-linked cable from swelling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501103 CN102013288A (en) | 2010-10-09 | 2010-10-09 | Method for effectively preventing sheath of high-pressure cross-linked cable from swelling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102013288A true CN102013288A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010501103 Pending CN102013288A (en) | 2010-10-09 | 2010-10-09 | Method for effectively preventing sheath of high-pressure cross-linked cable from swelling |
Country Status (1)
| Country | Link |
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| CN (1) | CN102013288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709863A (en) * | 2012-04-10 | 2012-10-03 | 山西省电力公司太原供电分公司 | Sealer for tip of cable through pipe |
| CN107325524A (en) * | 2015-07-26 | 2017-11-07 | 苏州专创光电科技有限公司 | A kind of cable or optical cable termination seal cap and preparation method thereof |
| CN107768029A (en) * | 2017-12-04 | 2018-03-06 | 长沙恒飞电缆有限公司 | The method and apparatus of silanes crosslinked cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500747A (en) * | 1983-03-30 | 1985-02-19 | Northern Telecom Limited | Gas pressurizable cable with compressed plug seal and method of making it |
| CN2622896Y (en) * | 2003-04-11 | 2004-06-30 | 上海南大集团有限公司 | Self-controlling cable blowoff closure head |
| CN2859851Y (en) * | 2005-11-29 | 2007-01-17 | 广东长园电缆附件有限公司 | Water-proof connector of power cable |
| CN101339828A (en) * | 2007-09-14 | 2009-01-07 | 朱水良 | Processing method of power cable |
-
2010
- 2010-10-09 CN CN 201010501103 patent/CN102013288A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500747A (en) * | 1983-03-30 | 1985-02-19 | Northern Telecom Limited | Gas pressurizable cable with compressed plug seal and method of making it |
| CN2622896Y (en) * | 2003-04-11 | 2004-06-30 | 上海南大集团有限公司 | Self-controlling cable blowoff closure head |
| CN2859851Y (en) * | 2005-11-29 | 2007-01-17 | 广东长园电缆附件有限公司 | Water-proof connector of power cable |
| CN101339828A (en) * | 2007-09-14 | 2009-01-07 | 朱水良 | Processing method of power cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709863A (en) * | 2012-04-10 | 2012-10-03 | 山西省电力公司太原供电分公司 | Sealer for tip of cable through pipe |
| CN107325524A (en) * | 2015-07-26 | 2017-11-07 | 苏州专创光电科技有限公司 | A kind of cable or optical cable termination seal cap and preparation method thereof |
| CN107768029A (en) * | 2017-12-04 | 2018-03-06 | 长沙恒飞电缆有限公司 | The method and apparatus of silanes crosslinked cable |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110413 |