CN110379560A - The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV - Google Patents
The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV Download PDFInfo
- Publication number
- CN110379560A CN110379560A CN201910546881.XA CN201910546881A CN110379560A CN 110379560 A CN110379560 A CN 110379560A CN 201910546881 A CN201910546881 A CN 201910546881A CN 110379560 A CN110379560 A CN 110379560A
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- Prior art keywords
- shield material
- layer
- melt pressure
- long length
- submarine cable
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/145—Pretreatment or after-treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/148—Selection of the insulating material therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/227—Pretreatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Insulated Conductors (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of manufacturing methods of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV, feature is inner shield material, Insulation Material, the three-layer co-extruded detailed process of external shield material are as follows: inner shield material is added in three-layer co-extruded cross-linking production line, Insulation Material and external shield material, first the temperature of the blast conductor preheater of production line is adjusted to 130 DEG C before extrusion molding, speed of production is adjusted to 0.55 m/min, when extrusion molding, the melting temperature for controlling Insulation Material is 120-122 DEG C, the melting temperature of inner shield material is 118-122 DEG C, the melting temperature of external shield material is 120-123 DEG C, in continuous production process, the starting melt pressure for controlling Insulation Material is 280-285bar, the end melt pressure of Insulation Material is 286-291bar, inner shield material Starting melt pressure is 360-365bar, and the end melt pressure of inner shield material is 360-365bar, and the starting melt pressure of external shield material is 365-370bar, and the end melt pressure of external shield material is 368-373bar.Advantage has been to ensure that the height of sea cable insulated part electric property in this length is consistent and matches.
Description
Technical field
The present invention relates to a kind of manufactures of submarine cable that insulate, and are crosslinked more particularly, to a kind of long length non junction 500kV
The manufacturing method of polyethylene insulation submarine cable.
Background technique
Has there is the trend developed from land to coastal waters in global Construction of Wind Power, compared with the wind-powered electricity generation of land, sea turn electric wind
Can resource energy benefits it is higher than landwid electric field by 20%~40%, also have do not take up an area, wind speed is high, sand and dust are few, electricity is big,
The advantages such as stable and dust zero discharge, while the abrasion of unit can be reduced, extend wind power generating set uses the longevity
Life is suitble to large-scale development.Plan is put scale into operation to the year two thousand twenty whole nation offshore wind farm and is reached in National Energy Board's planning
10000000 kilowatts, strive that accumulative grid connection capacity reaches 5,000,000 kilowatts or more.But due to by current sea cable manufacturing equipment, manufacture work
The limitation of the factors such as process causes the length of the high voltage ac/dc sea cable manufactured shorter, satisfaction that can not be reliable and secure
The needs of maritime power conveying, therefore under current overall background, accelerate the development for promoting long length non junction sea cable to seem outstanding
It is important.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of crosslinked polyetylene insulated seabeds long length non junction 500kV
The manufacturing method of cable.
The technical scheme of the invention to solve the technical problem is:
The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV, comprising: conductor strand → interior screen
It is three-layer co-extruded to cover material, Insulation Material, external shield material, and → core wire degasification → squeezes lead set+squeeze jacket → wire armoring stranding, described is interior
Shield the three-layer co-extruded detailed process of material, Insulation Material, external shield material are as follows: be added in enough in three-layer co-extruded cross-linking production line
Material, Insulation Material and external shield material are shielded, first adjusts the temperature of the blast conductor preheater of three-layer co-extruded cross-linking production line before extrusion molding
0.55m/min is adjusted to 130 DEG C, speed of production, and when extrusion molding, the melting temperature for controlling Insulation Material is 120-122 DEG C, interior screen
The melting temperature for covering material is 118-122 DEG C, and the melting temperature of external shield material is 120-123 DEG C, while in three-layer co-extruded cross-linking
In the continuous production process of production line, the starting melt pressure for controlling Insulation Material is 280-285bar, and the end of Insulation Material melts
Pressure is 286-291bar, and the starting melt pressure of inner shield material is 360-365bar, the end melt pressure of inner shield material
Starting melt pressure for 360-365bar, external shield material is 365-370bar, and the end melt pressure of external shield material is
368-373bar obtain the jointless 500kV of long length to guarantee three-layer co-extruded cross-linking production line continuous production 19 days or more
The crosslinking core wire of crosslinked polyetylene insulated submarine cable.
The Insulation Material is cross-linked polyethylene insulating material.
The trade mark of the cross-linked polyethylene insulating material is LS4201EHV.The cross-linked polyethylene insulating material of the trade mark it is short
When power frequency breakdown strength (plate electrode diameter 25mm, rate of pressure rise 500V/S) >=30kV/mm, impurity full-size≤0.075
(in 1000g print), performance is more excellent.
The inner shield material and the external shield material use semiconductive shieldin material.Can be sufficiently compatible with insulation, allow
Operating temperature allows operating temperature consistent with insulating layer.
The trade mark of the semiconductive shieldin material is LE0500.The semiconductive shieldin material of the above-mentioned trade mark, 23 DEG C of volume electricity
Resistance rate≤1.0 Ω .m, 90 DEG C of volume resistivities≤3.5 Ω .m, performance are more excellent.
Filter screen in the three-layer co-extruded cross-linking production line uses double-layer filtering net, and the material of filter screen is medical grade
Stainless steel, the mesh number of filter screen are 300 mesh.Filter screen uses double-layer structure, and the mesh number of filter screen is set as 300 mesh, can be true
Protect that inner shield material, Insulation Material, external shield material is three-layer co-extruded goes on smoothly.
Compared with the prior art, the advantages of the present invention are as follows: it is connect by processable long length (>=18km) the out nothing of this method
The crosslinked polyetylene insulated submarine cable of 500kV of head, it is ensured that the height one of sea cable major insulation partial electric performance in this length
It causes and matches, meet the needs of maritime power conveying；In addition, this method is the major insulation part of high pressure overland cable in same work
Electrical matching in journey also achieves the possibility of realization；Pass through the control to three-layer co-extruded cross-linking production line key index melt pressure
System improves starting melt pressure and terminates the floating index between melt pressure, it can be ensured that the continuous plasticating capacity of insulated wire cores is protected
Hinder 500kV submarine cable finished product overall performance to stablize.
Specific embodiment
Present invention is further described in detail below.
The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV, comprising the following specific steps
(1) conductor strand；
(2) inner shield material, Insulation Material, external shield material are three-layer co-extruded, and detailed process is as follows: in three-layer co-extruded cross-linking production line
Middle mounting material is the double-layer filtering net of medical grade stainless steel, and the mesh number of filter screen is 300 mesh, and is produced in three-layer co-extruded cross-linking
It is added enough inner shield material, Insulation Material and external shield material in line, it is first that the conductor of three-layer co-extruded cross-linking production line is pre- before extrusion molding
The temperature of thermal adjusts to 130 DEG C, speed of production and is adjusted to 0.55m/min, and when extrusion molding, the melting temperature for controlling Insulation Material is
120-122 DEG C, the melting temperature of inner shield material is 118-122 DEG C, and the melting temperature of external shield material is 120-123 DEG C, simultaneously
In the continuous production process of three-layer co-extruded cross-linking production line, the starting melt pressure for controlling Insulation Material is 280-285bar, absolutely
The end melt pressure of edge material is 286-291bar, and the starting melt pressure of inner shield material is 360-365bar, inner shield material
End melt pressure be 360-365bar, the starting melt pressure of external shield material is 365-370bar, the knot of external shield material
Beam melt pressure be 368-373bar, to guarantee three-layer co-extruded cross-linking production line continuous production 19 days or more, obtain long length without
The crosslinking core wire of the crosslinked polyetylene insulated submarine cable of the 500kV of connector；
(3) core wire degasification；
(4) lead set+squeeze jacket is squeezed；
(5) wire armoring finally obtains the crosslinked polyetylene insulated submarine cable of long length non junction 500kV.
In this particular embodiment, Insulation Material is cross-linked polyethylene insulating material, trade mark LS4201EHV；Inner shield material and
External shield material uses semiconductive shieldin material, trade mark LE0500.
To the length processed by this method be 18km the crosslinked polyetylene insulated submarine cable of 500kV non junction by
International 490 standard of bulk power grid CIGRE TB has carried out whole resistance test, does not puncture under conditions of 580kV, 60min；Separately
Also partial discharge test has been carried out to the tail portion of cable and head according to IEC62067 standard, in statement sensitivity at 435kV
(2pC) nothing can detect that electric discharge, while carry out the test of micropore impurity to the core wire of tail portion part, meet related request, comprehensive
For conjunction, current all detection means are used to this non junction 500kV photoelectric composite submarine cable, conclusion is qualification.
Claims (6)
1. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV, comprising: conductor strand → inner shield
Material, Insulation Material, external shield material be three-layer co-extruded, and → core wire degasification → squeezes lead set+squeeze jacket → wire armoring stranding, it is characterised in that
The three-layer co-extruded detailed process of the inner shield material, Insulation Material, external shield material are as follows: be added in three-layer co-extruded cross-linking production line
Enough inner shield material, Insulation Material and external shield material, first by the blast conductor preheater of three-layer co-extruded cross-linking production line before extrusion molding
Temperature adjusts to 130 DEG C, speed of production and is adjusted to 0.55m/min, and when extrusion molding, the melting temperature for controlling Insulation Material is 120-122
DEG C, the melting temperature of inner shield material is 118-122 DEG C, and the melting temperature of external shield material is 120-123 DEG C, while altogether at three layers
In the continuous production process of extruded cross-linking production line, the starting melt pressure for controlling Insulation Material is 280-285bar, the knot of Insulation Material
Beam melt pressure is 286-291bar, and the starting melt pressure of inner shield material is 360-365bar, the end of inner shield material is molten
Melting pressure is 360-365bar, and the starting melt pressure of external shield material is 365-370bar, and the end of external shield material melts pressure
It is jointless to obtain long length to guarantee three-layer co-extruded cross-linking production line continuous production 19 days or more for 368-373bar for power
The crosslinking core wire of the crosslinked polyetylene insulated submarine cable of 500kV.
2. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV as described in claim 1, special
Sign is that the Insulation Material is cross-linked polyethylene insulating material.
3. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV as claimed in claim 2, special
Sign is that the trade mark of the cross-linked polyethylene insulating material is LS4201EHV.
4. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV as described in claim 1, special
Sign is the inner shield material and the external shield material using semiconductive shieldin material.
5. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV as claimed in claim 4, special
Sign is that the trade mark of the semiconductive shieldin material is LE0500.
6. the manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV as described in claim 1, special
Sign be the filter screen in the three-layer co-extruded cross-linking production line using double-layer filtering net, the material of filter screen be medical grade not
Become rusty steel, and the mesh number of filter screen is 300 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546881.XA CN110379560A (en) | 2019-06-24 | 2019-06-24 | The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546881.XA CN110379560A (en) | 2019-06-24 | 2019-06-24 | The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV |
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| Publication Number | Publication Date |
|---|---|
| CN110379560A true CN110379560A (en) | 2019-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910546881.XA Pending CN110379560A (en) | 2019-06-24 | 2019-06-24 | The manufacturing method of the crosslinked polyetylene insulated submarine cable of long length non junction 500kV |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820449A (en) * | 2020-12-29 | 2021-05-18 | 贵州新曙光电缆有限公司 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant rat and termite-proof medium-voltage power cable |
| CN113284673A (en) * | 2021-07-23 | 2021-08-20 | 中天科技海缆股份有限公司 | Preparation device and preparation method of large-length jointless ultrahigh-voltage submarine cable |
Citations (4)
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|---|---|---|---|---|
| CN102543316A (en) * | 2012-02-17 | 2012-07-04 | 杭州电缆股份有限公司 | Processing method for insulation process of 500kV cross-linked cable |
| CN102664380A (en) * | 2012-04-19 | 2012-09-12 | 中天科技海缆有限公司 | Flexible joint for 220kV crosslinked polyethylene submarine cables and method for manufacturing flexible joint |
| CN104112549A (en) * | 2014-06-20 | 2014-10-22 | 宁波东方电缆股份有限公司 | Long-length joint-free +/-200-kV flexible direct-current submarine cable manufacturing method |
| CN109767863A (en) * | 2019-03-12 | 2019-05-17 | 上海斯麟特种设备工程有限公司 | Laying three-layer co-extruded fire retardant insulating aerial cable and its manufacturing method in jungle |
-
2019
- 2019-06-24 CN CN201910546881.XA patent/CN110379560A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543316A (en) * | 2012-02-17 | 2012-07-04 | 杭州电缆股份有限公司 | Processing method for insulation process of 500kV cross-linked cable |
| CN102664380A (en) * | 2012-04-19 | 2012-09-12 | 中天科技海缆有限公司 | Flexible joint for 220kV crosslinked polyethylene submarine cables and method for manufacturing flexible joint |
| CN104112549A (en) * | 2014-06-20 | 2014-10-22 | 宁波东方电缆股份有限公司 | Long-length joint-free +/-200-kV flexible direct-current submarine cable manufacturing method |
| CN109767863A (en) * | 2019-03-12 | 2019-05-17 | 上海斯麟特种设备工程有限公司 | Laying three-layer co-extruded fire retardant insulating aerial cable and its manufacturing method in jungle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820449A (en) * | 2020-12-29 | 2021-05-18 | 贵州新曙光电缆有限公司 | Crosslinked polyethylene insulation halogen-free low-smoke flame-retardant rat and termite-proof medium-voltage power cable |
| CN113284673A (en) * | 2021-07-23 | 2021-08-20 | 中天科技海缆股份有限公司 | Preparation device and preparation method of large-length jointless ultrahigh-voltage submarine cable |
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Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |