CN102593764B - Method for manufacturing flexible joint of large-length submarine cable - Google Patents
Method for manufacturing flexible joint of large-length submarine cable Download PDFInfo
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- CN102593764B CN102593764B CN201210070688.1A CN201210070688A CN102593764B CN 102593764 B CN102593764 B CN 102593764B CN 201210070688 A CN201210070688 A CN 201210070688A CN 102593764 B CN102593764 B CN 102593764B
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Abstract
The invention discloses a method for manufacturing a flexible joint of a submarine cable capable of satisfying the requirements of high-voltage and ultrahigh-voltage use situations. The method comprises the steps as follows: 1) conductor connection; 2) conductor shield and vulcanization; 3) insulation extrusion; 4) insulation vulcanization; 5) insulation shield and repair; and 6) metal sheath recovery, wherein the insulation vulcanization process is that an insulated cable is put into a vulcanizing mould, nitrogen gas filled into the vulcanizing mould during the vulcanization cannot leak, cooling water systems at the two ends of the vulcanizing mould are simultaneously kept unblocked, so as to keep the temperature at the two ends of the cable below 70 DEG C; when the temperature reaches 235 to 245 DEG C and the nitrogen gas pressure is 1.5Mpa, insulation vulcanization begins, and the temperature and the pressure are regulated through a valve and a power source; and after the vulcanization is conducted for 120 minutes, the power source is cut off, the temperature is reduced below 100 DEG C while the pressure is kept at1.5Mpa, gas is discharged to release the pressure, and when the pressure is zero, the vulcanizing mould is opened and the cable is taken out. When the cable produced by adopting the manufacturing method disclosed by the invention is used as the submarine cable in high-voltage and ultrahigh-voltage situations, the performance of the cable is excellent and the requirements of the use environments are satisfied.
Description
Technical field
The present invention relates to a kind of manufacture method of extra large cable connecting hose, particularly a kind of manufacture method that exchanges the connecting hose of submarine cable for big-length high pressure, ultra-high voltage cross-linking polyethylene insulation.
Background technology
Submarine cable is that countries in the world are recognized that a large-scale synthesis engineering that difficulty is maximum, complexity is the highest.Design, the manufacture of cable, transport, lay, safeguard also out and away higher than other cable product, cable length and cable life are had to special requirement, and existing extra large cable production equipment and storage cable device have limited big-length and have exchanged production and the use of submarine cable simultaneously.Submarine cable also often has generation because of the phenomenon of the improper reason infringements such as anchor evil, has brought huge economic loss to applying unit.
The patent No. is the connecting method that 200610086196 application for a patent for invention discloses a kind of power cable with cross-linked polyethylene insulation, it is by conductor connection, conductor screen and sulfuration in advance, insulating exruded, insulating sulfuration, external shield and reparing process, two ends power cable with cross-linked polyethylene insulation nonconforming length is continued, guaranteed that after continuing, the performance of cable meets related standard requirements.But the cable that such connecting method is produced is during at high pressure, superhigh pressure and as submarine cable, its performance can not meet the requirement of use.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of manufacture method of the subsea cable soft joint that can meet high pressure, superhigh pressure use occasion.
In order to solve above-mentioned technical problem, big-length of the present invention sea cable connecting hose manufacture method comprises the following steps:
1) conductor connects
Adopt the welding manner of argon arc welding to the welding of conductor staggered floor, and guarantee that welding position after treatment equates with cable conductor external diameter.
2) conductor screen and sulfuration
Prefabricated conductor shield, conductor shield adopts half-covering tube structure, and casing length is guaranteed to overlap with cable conductor screen; Outside two half-covering tubes of welding conductors with the wrapped one deck of the mode of putting up, so that the demoulding and fixed sleeving; Load onto vulcanizing mold and be heated to 235-245 ℃, cut off the electricity supply and stop heating, and progressively tighten up vulcanizing mold fastener, vulcanizing mold is carried out air-cooledly simultaneously, take vulcanizing mold apart, dismantle after wrapped material, finishing conductor screen.
3) insulating exruded
Cable after finishing is put into insulating exruded mold cavity, and start the preheating that heats up after fixing cable two ends; When the temperature of insulating exruded mold cavity rises to design temperature 85-95 ℃, the charging aperture of extruder by insulating exruded mould patrix is to cavity material feeding, form insulating barrier, in the time that all there is flash at insulating exruded mould two ends, turn off extruder power supply, by the multiple type of cooling, extruder tube connector and patrix sprue are carried out coolingly, treat that the temperature of insulating exruded mould is down to room temperature, take out cable.
4) insulating sulfuration
Cable after insulation is put into vulcanizing mold and carry out insulating sulfuration.
5) insulation shielding and reparation
Semiconductive varnish is evenly coated in to clean insulating surface, then semiconductive self-adhesive tape is wrapped in joint outside in the mode of partly putting up, two ends and cable external shield overlap joint, recover insulation screen.
6) metallic sheath recovers
The prefabricated metal sleeve covers insulation shielding part that conductor welding protheca enters, prefabricated metal casing inner diameter is slightly larger than the outside diameter of cable after insulation shielding, length is slightly longer than insulation shield and is recovered length, adopts the mould of different size that prefabricated metal sleeve pipe is pressed to the outer surface in insulation shield.
Key of the present invention is insulating sulfuration, and the setting of curing temperature and duration is the key of this method, and different curing temperatures and duration will produce different effects.If poly principle of crosslinking is a certain amount of crosslinking agent in polyethylene, crosslinking agent is cumyl peroxide, crosslinking agent is to decompose rapidly to generate free radical being heated to uniform temperature, free radical is unstable, at the hydrogen of capturing polyethylene molecule, make polyethylene molecule generate large molecule free radical, large molecule free radical mutually combines, form multiple crosslinking points, form build mechanism.
And cross-linking reaction speed depends on the decomposition rate of crosslinking agent and the heat transfer rate of insulation and semiconductive material, the decomposition rate of crosslinking agent depends on its half-life, it is only 0.28 second 240 ℃ of condition half-life, because the cable insulation of 220kV electric pressure is very thick, and insulation compared with after screen many, so crosslinking rate depends primarily on the heat transfer rate of insulation, insulation heat transfer rate and conductive coefficient, temperature difference are relevant, the conductive coefficient of crosslinked polyethylene is constant, so only be improved the temperature difference, the temperature that improves sulfuration could improve rate of heat transfer.
Therefore, the factor such as heat transfer rate, the degree of cross linking of basic principle, Insulation Material and the semiconductive material of comprehensive polyethylene sulfuration, vulcanizing mold put into by the cable after insulation by we, vulcanizing mold is sealed with encapsulant, the nitrogen being filled with while guaranteeing to vulcanize is without leakage, keep vulcanizing mold two ends cooling water system unimpeded, to keep cable two ends temperature below 70 ℃ simultaneously; Reach 235-245 ℃ in temperature, nitrogen pressure starts insulating sulfuration while being 1.5Mpa, by valve and power adjustment temperature and pressure; Vulcanize after 120 minutes, cut off the electricity supply, keep pressure 1.5Mpa to be cooled to below 100 ℃, venting release, pressure is 1 o'clock, opens vulcanizing mold, takes out cable.
Extra large cable connecting hose manufacture method provided by the invention, overcome a difficult problem that causes producing big-length high pressure, ultra-high voltage cross-linking polyethylene insulation and exchange submarine cable because of the reason of cable production equipment and storage cable device, the extra large cable connecting hose of making is thus close with cable body performance, and indices is better than relevant criterion.The cable that this connecting method is produced is during at high pressure, superhigh pressure occasion and as submarine cable, and its excellent performance, meets the requirement of above-mentioned environment for use.
Accompanying drawing explanation
Fig. 1 is the present invention sea cable connecting hose structural representation.
Fig. 2 is vulcanizing mold structural representation of the present invention.
Fig. 3 is the insulating exruded mode structure schematic diagram of the present invention.
Fig. 4 is stamped metal mode structure schematic diagram of the present invention.
Embodiment
Below in conjunction with Fig. 1-4, the present invention is further detailed explanation.
1) conductor connects
Adopt the welding manner of argon arc welding to conductor 2 staggered floor welding, welding position equates with cable conductor external diameter after treatment.
2) conductor screen and sulfuration
The conductor shield 3 of prefabricated special material, conductor shield 3 adopts half-covering tube structure, and casing inner diameter and conductor diameter approach, and casing length is guaranteed and cable conductor shielding overlap joint; Outside two half-covering tubes of welding conductors, with the wrapped one deck special material of the mode of putting up, be convenient to demoulding fixed sleeving again.When loading onto vulcanizing mold 7 and being heated to predetermined temperature (240 ± 5 ℃), cut off the electricity supply and stop heating, and progressively tighten up vulcanizing mold fastener, carry out air-cooled to vulcanizing mold simultaneously, in the time that temperature drops to uniform temperature, take vulcanizing mold apart, dismantle after wrapped material, finishing conductor screen.
3) insulating exruded
Cable 1 after finishing is put into insulating exruded mould 9 inner chambers, and start the preheating that heats up after fixing cable two ends.When the temperature of insulating exruded mould 9 inner chambers rises to design temperature (90 ± 5 ℃), the charging aperture of extruder by insulating exruded mould patrix is to cavity material feeding, form insulating barrier 4, in the time that all there is flash at insulating exruded mould two ends, turn off extruder power supply, by the multiple type of cooling, extruder tube connector and patrix sprue are carried out coolingly, treat that the temperature of insulating exruded mould is down to room temperature, take out cable.
4) insulating sulfuration
The setting of curing temperature and duration is the key of this step, and different curing temperatures and duration will produce different effects.If poly principle of crosslinking is a certain amount of crosslinking agent in polyethylene, crosslinking agent is cumyl peroxide, crosslinking agent is to decompose rapidly to generate free radical being heated to uniform temperature, free radical is unstable, at the hydrogen of capturing polyethylene molecule, make polyethylene molecule generate large molecule free radical, large molecule free radical mutually combines, form multiple crosslinking points, form build mechanism.And cross-linking reaction speed depends on the decomposition rate of crosslinking agent and the heat transfer rate of insulation and semiconductive material, the decomposition rate of crosslinking agent depends on its half-life, it is only 0.28 second 240 ℃ of condition half-life, because the cable insulation of 220kV electric pressure is very thick, and insulation compared with after screen many, so crosslinking rate depends primarily on the heat transfer rate of insulation, insulation heat transfer rate and conductive coefficient, temperature difference are relevant, the conductive coefficient of crosslinked polyethylene is constant, so only be improved the temperature difference, the temperature that improves sulfuration could improve rate of heat transfer.
Therefore, the factor such as heat transfer rate, the degree of cross linking of basic principle, Insulation Material and the semiconductive material of comprehensive polyethylene sulfuration, vulcanizing mold 8 put into by the cable 1 after insulation by we, vulcanizing mold is sealed with encapsulant, the nitrogen being filled with while guaranteeing to vulcanize is without leakage, keep vulcanizing mold two ends cooling water system unimpeded, to keep cable two ends temperature below 70 ℃ simultaneously.Reach 240 ± 5 ℃ in temperature, when nitrogen pressure 1.5Mpa, start insulating sulfuration, by valve and power adjustment temperature and pressure.Vulcanize after 120 minutes, cut off the electricity supply, keep pressure 1.5Mpa to be cooled to below 100 degree, venting release, pressure is 1 o'clock, opens vulcanizing mold, takes out cable;
5) insulation shielding and reparation
Semiconductive varnish is evenly coated in to clean insulating surface, then semiconductive self-adhesive tape is wrapped in joint outside in the mode of partly putting up, two ends and cable 1 external shield overlap joint, recover insulation screen 5.
6) metallic sheath recovers
The prefabricated metal sleeve pipe 6 that conductor welding protheca enters covers insulation shielding part, in prefabricated metal sleeve pipe after being slightly larger than insulation shielding the outside diameter of cable, length is slightly longer than insulation shield and is recovered length, adopts the mould 13 of different size that prefabricated metal sleeve pipe is pressed to the outer surface in insulation shield.
Six steps that extra large cable connecting hose of the present invention is made, can regulate above-mentioned parameter according to the cross-sectional area of conductor of extra large cable, electric pressure.And can make as required extra large cable and produce connecting hose or extra large cable reparation.
In extra large cable connecting hose production method of the present invention, four kinds of moulds of specially joining are used, i.e. two kinds of vulcanizing molds, a kind of insulating exruded mould and a kind of metal crimp moldings.
Vulcanizing mold when conductor screen sulfuration and insulating sulfuration, by upper and lower die body composition.Conductor screen vulcanizing mold adopts copper square structure.Insulating sulfuration mould adopts steel circular configuration, and cavity volume guarantees that nitrogen is filled with after cure effect.
Insulating exruded mould is made up of upper and lower die body.Upper and lower die body is agreed with mutually and is formed three cylindrical structures by three identical parts respectively, and the material of three parts is respectively a set of rubber die 10 and two cover punching blocks 11,12.Rubber die 10 intracavity diameters equal outer insulation diameter, and two ends adopt dentalation, are convenient to extrude absolutely overflowing of edge material.Upper die body is provided with charging aperture, and described charging aperture is connected extruder by tube connector.
Metal crimp molding is made up of the upper and lower die body of counting cover steel material.The slip of the stamped metal die sleeve by different inner diameters makes prefabricated metal sleeve pipe press the outer surface in insulation shield.
Above-described embodiment does not limit the present invention in any way, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in protection scope of the present invention.
Claims (3)
1. a big-length sea cable connecting hose manufacture method, comprises the following steps:
1) conductor connects
Adopt the welding manner of argon arc welding to the welding of conductor staggered floor, and guarantee that welding position after treatment equates with cable conductor external diameter;
2) conductor screen and sulfuration
Prefabricated conductor shield, conductor shield adopts half-covering tube structure, and casing length is guaranteed to overlap with cable conductor screen; Outside two half-covering tubes of welding conductors with the wrapped one deck of the mode of putting up, so that the demoulding and fixed sleeving; Load onto vulcanizing mold and be heated to uniform temperature, cut off the electricity supply and stop heating, and progressively tighten up vulcanizing mold fastener, vulcanizing mold is carried out air-cooledly simultaneously, take vulcanizing mold apart, dismantle after wrapped material, finishing conductor screen;
3) insulating exruded
Cable after finishing is put into insulating exruded mold cavity, and start the preheating that heats up after fixing cable two ends; When the temperature of insulating exruded mold cavity rises to design temperature, the charging aperture of extruder by insulating exruded mould patrix is to cavity material feeding, form insulating barrier, in the time that all there is flash at insulating exruded mould two ends, turn off extruder power supply, by the multiple type of cooling, extruder tube connector and patrix sprue are carried out coolingly, treat that the temperature of insulating exruded mould is down to room temperature, take out cable;
4) insulating sulfuration
Cable after insulation is put into vulcanizing mold and carry out insulating sulfuration;
5) insulation shielding and reparation
Semiconductive varnish is evenly coated in to clean insulating surface, then semiconductive self-adhesive tape is wrapped in joint outside in the mode of partly putting up, two ends and cable external shield overlap joint, recover insulation screen;
6) metallic sheath recovers
The prefabricated metal sleeve covers insulation shielding part that conductor welding protheca enters, prefabricated metal casing inner diameter is slightly larger than the outside diameter of cable after insulation shielding, length is slightly longer than insulation shield and is recovered length, adopts the mould of different size that prefabricated metal sleeve pipe is pressed to the outer surface in insulation shield;
The insulating sulfuration process that it is characterized in that described step 4) is as follows: the cable after insulation is put into vulcanizing mold, vulcanizing mold is sealed with encapsulant, the nitrogen being filled with while guaranteeing to vulcanize is without leakage, keep vulcanizing mold two ends cooling water system unimpeded, to keep cable two ends temperature below 70 ℃ simultaneously; Reach 235-245 ℃ in temperature, nitrogen pressure starts insulating sulfuration while being 1.5Mpa, by valve and power adjustment temperature and pressure; Vulcanize after 120 minutes, cut off the electricity supply, keep pressure 1.5Mpa to be cooled to below 100 ℃, venting release, pressure is 1 o'clock, opens vulcanizing mold, takes out cable.
2. a kind of big-length according to claim 1 sea cable connecting hose manufacture method, is characterized in that: in described step 2) in, described heating-up temperature is 235-245 ℃.
3. a kind of big-length according to claim 1 sea cable connecting hose manufacture method, is characterized in that: in described step 3), in the time that the temperature of insulating exruded mold cavity rises to 85-95 ℃, the charging aperture of extruder by insulating exruded mould patrix is to cavity material feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210070688.1A CN102593764B (en) | 2012-03-16 | 2012-03-16 | Method for manufacturing flexible joint of large-length submarine cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210070688.1A CN102593764B (en) | 2012-03-16 | 2012-03-16 | Method for manufacturing flexible joint of large-length submarine cable |
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| CN102593764B true CN102593764B (en) | 2014-05-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088899A1 (en) * | 2015-11-23 | 2017-06-01 | Abb Hv Cables (Switzerland) Gmbh | Flexible vulcanized joint between two electric power cables and process for producing said joint |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544971B (en) * | 2012-02-28 | 2014-07-16 | 洛阳栾川钼业集团股份有限公司 | Heat vulcanization repairing method of cable connector and mould for repairing |
| CN104299728B (en) * | 2014-10-29 | 2016-09-07 | 重庆泰山电缆有限公司 | A kind of submarine cable factory joint lead sheath restoration methods |
| CN107196244A (en) * | 2017-03-30 | 2017-09-22 | 重庆泰山电缆有限公司 | A kind of insulating exruded crosslinking integral process of subsea cable soft joint |
| CN108683126B (en) * | 2018-06-13 | 2020-08-28 | 云南保利天同仪器有限公司 | Intelligent repair system based on submarine cable |
| 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 |
| CN114069495A (en) * | 2021-10-11 | 2022-02-18 | 岭澳核电有限公司 | Cable on-site repairing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084307A (en) * | 1973-07-11 | 1978-04-18 | Allmanna Svenska Elektriska Aktiebolaget | Method of joining two cables with an insulation of cross-linked polyethylene or another cross linked linear polymer |
| US4354053A (en) * | 1978-02-01 | 1982-10-12 | Gold Marvin H | Spliced high voltage cable |
| CN101453109A (en) * | 2007-12-07 | 2009-06-10 | 青岛汉缆股份有限公司 | High voltage and ultra high voltage crosslinking subsea cable soft joint and method for manufacturing the same |
| CN1929224B (en) * | 2006-09-08 | 2010-11-03 | 江苏圣安电缆有限公司 | Switching method and mould for crosslinked polyethylene insulated power cable |
-
2012
- 2012-03-16 CN CN201210070688.1A patent/CN102593764B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084307A (en) * | 1973-07-11 | 1978-04-18 | Allmanna Svenska Elektriska Aktiebolaget | Method of joining two cables with an insulation of cross-linked polyethylene or another cross linked linear polymer |
| US4354053A (en) * | 1978-02-01 | 1982-10-12 | Gold Marvin H | Spliced high voltage cable |
| CN1929224B (en) * | 2006-09-08 | 2010-11-03 | 江苏圣安电缆有限公司 | Switching method and mould for crosslinked polyethylene insulated power cable |
| CN101453109A (en) * | 2007-12-07 | 2009-06-10 | 青岛汉缆股份有限公司 | High voltage and ultra high voltage crosslinking subsea cable soft joint and method for manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017088899A1 (en) * | 2015-11-23 | 2017-06-01 | Abb Hv Cables (Switzerland) Gmbh | Flexible vulcanized joint between two electric power cables and process for producing said joint |
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| CN102593764A (en) | 2012-07-18 |
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Address after: 215513, Tongda Road, Changshou City Economic Development Zone, Jiangsu, Suzhou, 8 Patentee after: Hengtong Submarine Power Cable Co.,Ltd. Address before: 215513, Tongda Road, Changshou City Economic Development Zone, Jiangsu, Suzhou, 8 Patentee before: JIANGSU HENGTONG HIGH-VOLTAGE CABLE CO.,LTD. |
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Effective date of registration: 20220120 Address after: 215500 No.8, Tongda Road, Changshu Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: Hengtong Submarine Power Cable Co.,Ltd. Patentee after: JIANGSU HENGTONG WIRE&CABLE TECHNOLOGY Co.,Ltd. Address before: 215513 No. 8, Tongda Road, Changshu Economic Development Zone, Suzhou, Jiangsu Patentee before: Hengtong Submarine Power Cable Co.,Ltd. |
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