CN108091452A - High voltage power cable extrudes lead sheath and non metallic sheath continuous producing method - Google Patents
High voltage power cable extrudes lead sheath and non metallic sheath continuous producing method Download PDFInfo
- Publication number
- CN108091452A CN108091452A CN201711307096.6A CN201711307096A CN108091452A CN 108091452 A CN108091452 A CN 108091452A CN 201711307096 A CN201711307096 A CN 201711307096A CN 108091452 A CN108091452 A CN 108091452A
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- Prior art keywords
- sheath
- lead sheath
- lead
- non metallic
- high voltage
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- 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.)
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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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- 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
- H01B13/002—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment for heat extraction
-
- 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
-
- 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
- H01B13/228—After-treatment
-
- 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
- H01B13/245—Sheathing; Armouring; Screening; Applying other protective layers by extrusion of metal layers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
The invention discloses a kind of high voltage power cables to extrude lead sheath and non metallic sheath continuous producing method, it is characterised in that：Cable semi-finished product core is released by pay off rack, core is uniformly coated on cable core by lead sheath first by lead sheath cross-head, and completes the cooling of lead sheath；Then by bitumen coating device, by lead sheath surface even application last layer anti-corrosion asphalt；It is again by nonmetallic outer jacket extruding machine co-extruder head, non metallic sheath and outer semiconducting layer is coated to outside cable core；Bosh is subsequently sent to, nonmetallic oversheath is fully cooled by circulating cooling system, makes material solidification；The cable being cooled sufficiently keeps cable at the uniform velocity to advance forward, through disk in take-up stand take-up by traction machine travel.It solves the problems, such as yielding, cracky caused by lead sheath bad mechanical strength, has simplified production process, improve production efficiency, it is energy saving.
Description
Technical field
The present invention relates to cable manufacturing techniques, especially a kind of high voltage power cable extrudes lead sheath and connects with non metallic sheath
Continuous production method.
Background technology
The sheath of high voltage power cable is divided into protective metal shell and nonmetallic oversheath.The effect of sheath is mainly protected
For core insulating layer from external force mechanical damage and shielding electric field, the effect of oversheath is then anticorrosion and mechanical protection.Wherein
Power cable inner sheath is manufactured with lead due to it technically there are many merits to be widely used, as lead sheath has completely not
Water penetration is reliably prevented from the intrusion of moisture and moisture；The melting point of lead is low, will not make during lead sheath is manufactured absolutely
Edge layer is overheated and damaged；Corrosion resistance and good, lead do not work to dilute sulfuric acid and hydrochloric acid, only nitric acid, acetic acid, carbolic acid and certain
The rot of a little organic matters can play corrosiveness to lead；Also good toughness does not influence the flexibility of cable.
But current super-pressure lead sheathed cable production procedure is mostly that lead sheath production is completed to carry out lower road again after disk in take-up
The production of nonmetallic oversheath process, because High-voltage cable structure size is big, weight weight, lead material intensity is low, soft yielding, receives
Lead sheath is easily deformed during disk on line, serious or even rupture, seriously affects the quality and production efficiency of cable.
The content of the invention
The purpose of the present invention is to solve the yielding damage of lead sheath of the prior art, unstable product quality is raw
The problems such as efficiency is low are produced, a kind of high voltage power cable is provided and extrudes lead sheath and non metallic sheath continuous producing method.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of high voltage power cable
Extrude lead sheath and non metallic sheath continuous producing method, it is characterised in that including herein below：
(1) cable semi-finished product core is released by pay off rack, core is equal by lead sheath first by lead sheath cross-head
It is even coated on cable core, and complete the cooling of lead sheath.
(2) cable core of lead sheath has been extruded, then by bitumen coating device, by lead sheath surface even application last layer
Anti-corrosion asphalt.
(3) by the cable core after asphalt-coating by nonmetallic outer jacket extruding machine co-extruder head, by non metallic sheath
It is coated to outside cable core with outer semiconducting layer.
(4) cable for having extruded nonmetallic oversheath is sent into bosh, it will be nonmetallic outer by circulating cooling system
Sheath is fully cooled, and makes material solidification.
(5) cable being cooled sufficiently keeps cable at the uniform velocity to advance forward, through in take-up stand take-up by traction machine travel
Disk.
Foregoing high voltage power cable is extruded in lead sheath and non metallic sheath continuous producing method, the cable semi-finished product
In D1 ± 1.0mm, lead sheath extruder mold core size is D1+1.0mm for the outer diameter control of core, ensures that lead sheath closely wraps
Apply online wicking surface.
Foregoing high voltage power cable extrudes lead sheath and in non metallic sheath continuous producing method, institute's matcoveredn produces
Process is carried out continuously under crawling traction machine travel, is at the uniform velocity walked.
Foregoing high voltage power cable is extruded in lead sheath and non metallic sheath continuous producing method, in the effect of dragger
Under, the core that lead sheath extrudes completion is advanced forward, and into bitumen coating device, pitch is heated to 145 by bitumen coating device
℃-165℃。
Foregoing high voltage power cable extrudes lead sheath and in non metallic sheath continuous producing method, bitumen coating to lead protects
After covering surface, rubber pattern is set in applying device exit.
Foregoing high voltage power cable is extruded in lead sheath and non metallic sheath continuous producing method, in the rubber pattern
Pore size D2 chooses size：Lead jacket outer diameter D3-3mm under rubber pattern effect, makes the one layer of drip of lead sheath surface even application
Green grass or young crops, and extra pitch is made to stay in applying device.
Foregoing high voltage power cable extrudes lead sheath and in non metallic sheath continuous producing method, described is nonmetallic outer
Sheath extruding machine, head are co-extruder head, are arranged in head for dual channel, wherein, non metallic sheath layer is in inner laminar flow
Road, outer semiconducting layer is in outer laminar flow road.
Foregoing high voltage power cable is extruded in lead sheath and non metallic sheath continuous producing method, extruding machine mold core size
D4 is designed as lead sheath outer diameter D 3+10mm, and by squeezing tubular type mode, in cable core at the uniform velocity moves ahead, by adjusting two extrusion moldings
Machine gel quantity adjusts the thickness of nonmetallic external sheath layer and outer semiconducting layer.
Foregoing high voltage power cable extrudes lead sheath and in non metallic sheath continuous producing method, the bosh is set
Promising sub-sectional cooling sink, wherein first segment sink are controlled water temperature at 55 ± 10 DEG C by temperature control device；Second segment sink is
Room temperature sink.
Foregoing high voltage power cable extrudes lead sheath and in non metallic sheath continuous producing method, the dragger is
Caterpillar-tractor, and equipped with belt with groove, groove radius r is 58-62mm.
The technical program adjusts equipment configurations by changing production procedure, by protective metal shell extrusion process and nonmetallic outer
Sheath production process merges into the production process with along with, extrudes lead sheath, and anti-corrosion asphalt coating, nonmetallic oversheath extrudes,
Outer semiconducting layer extrudes disposable production and completes, nonmetallic oversheath it is coated it is good after protection can be played to lead sheath well and make
With solve the problems, such aing the yielding rupture of lead sheath, while production efficiency be greatly improved.
The beneficial effects of the invention are as follows：It thoroughly solves yielding, cracky caused by lead sheath bad mechanical strength
Problem；The production process of previous complicated difficult control has been simplified, production efficiency greatly improved；Shorten the process-cycle, reduce manually,
The costs such as energy consumption.
Specific embodiment
Below by embodiment, the technical solutions of the present invention will be further described.
A kind of high voltage power cable of the present embodiment extrudes lead sheath and non metallic sheath continuous producing method, including following step
Suddenly：
First, the cable semi-finished product core for meeting technology requirement is chosen, cable semi-finished product core is released by pay off rack, core is first
Lead sheath cross-head is first passed through, lead sheath is uniformly coated on cable core, and complete lead sheath cooling.
2nd, the cable core of lead sheath has been extruded, then by bitumen coating device, by lead sheath surface even application last layer
Anti-corrosion asphalt.
3rd, by the cable core after asphalt-coating by nonmetallic outer jacket extruding machine co-extruder head, by non metallic sheath
It is coated to outside cable core with outer semiconducting layer.
4th, the cable for having extruded nonmetallic oversheath is sent into bosh, it will be nonmetallic outer by circulating cooling system
Sheath is fully cooled, and makes material solidification.
5th, the cable being cooled sufficiently keeps cable at the uniform velocity to advance forward, through in take-up stand take-up by traction machine travel
Disk.
The data symbol that the present embodiment is related to has：Cable semi-finished product core outer diameter D1；Rubber pattern hole size D2；Lead
Outer diameter sheath D3；Extruding machine mold core dimension D 4；Pulley groove radius r；Take-up cylinder D5.
The entire production process of the present embodiment institute matcoveredn, to prevent high-temperature lead sheath from scalding cable core and nonmetallic
Sheath smoothly extrudes, and does not shut down and is carried out continuously under the traction of caterpillar-tractor, and at the uniform velocity walks.
Its precision controlling of the outer diameter of cable semi-finished product core in D1 ± 1.0mm, lead sheath extruder mold core size its
Precision is D1+1.0mm, ensures the close coated online wicking surface of lead sheath.
Under the action of dragger, the core that lead sheath extrudes completion is advanced forward, and into bitumen coating device, pitch applies
Pitch is heated in the range of 145 DEG C -165 DEG C by electrical heating, pitch is made to be completely transformed into liquid by coating apparatus.
Bitumen coating sets rubber pattern, cable passes through rubber pattern to behind lead sheath surface in applying device exit.Rubber
Mould hole size D2 chooses size：Lead jacket outer diameter D3-3mm under rubber pattern effect, makes lead sheath surface even application one
Layer pitch, and extra pitch is made to stay in applying device.
Nonmetallic outer jacket extruding machine, head are co-extruder head, are arranged in head for dual channel, wherein, non-gold
Belong to restrictive coating in inner laminar flow road, outer semiconducting layer is connected respectively to laminar flow inside and outside head in outer laminar flow road by two extruding machines
The feed inlet in road.
Further, extruding machine mold core dimension D 4 is set to lead sheath outer diameter D 3+10mm, and by squeezing tubular type mode, in cable core
In at the uniform velocity moving ahead, gel quantity is controlled by the rotating speed for adjusting two extruder screws, so as to adjust nonmetallic external sheath layer and outer
The thickness of semi-conductive layer.
It is sub-sectional cooling sink that the bosh, which is equipped with, and wherein first segment sink controls water temperature by temperature control device
At 55 ± 10 DEG C；Second segment sink is room temperature sink.In cable traveling process, initially enter first segment sink and carry out precooling
But, cause the mass defects such as surface water spot, puddle to avoid sheath material quenching, the is entered back by the cable after precooling
Two sections of room temperature sinks complete thoroughly cooling, material are made thoroughly to cure, such cooling procedure can make cable surface quality good.
The dragger of the present embodiment is completed by caterpillar-tractor, and dragger is equipped with belt with groove, groove radius r
For 60mm.Frictional force is improved by increasing belt with conductive cable contacts area, to ensure in production process between belt and cable
It does not slide.Cable drives steel disk by cable reel on disk tool cylinder through drawing machine travel forward, by take-up stand, and cylinder is straight
Footpath D5 is not less than 20 times of cable non metallic sheath outer diameter, is not also damaged with ensureing that cable is coiled in the upper rear lead sheath of disk tool
It is bad.
Above-described embodiment is the description of the invention, is not limitation of the invention, any simple transformation to the present invention
Means and methods afterwards etc. all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of high voltage power cable extrudes lead sheath and non metallic sheath continuous producing method, it is characterised in that including following interior
Hold：
(1) cable semi-finished product core is released by pay off rack, by lead sheath cross-head, lead sheath is uniformly wrapped first for core
It is applied on cable core, and completes the cooling of lead sheath；
(2) cable core of lead sheath has been extruded, then by bitumen coating device, by lead sheath surface even application last layer anti-corrosion
Pitch；
(3) by the cable core after asphalt-coating by nonmetallic outer jacket extruding machine co-extruder head, by non metallic sheath and outside
Semi-conductive layer is coated to outside cable core；
(4) cable for having extruded nonmetallic oversheath is sent into bosh, by circulating cooling system by nonmetallic oversheath
It is fully cooled, makes material solidification；
(5) cable being cooled sufficiently keeps cable at the uniform velocity to advance forward, through disk in take-up stand take-up by traction machine travel.
2. high voltage power cable according to claim 1 extrudes lead sheath and non metallic sheath continuous producing method, special
Sign is：In D1 ± 1.0mm, lead sheath extruder mold core size is D1+ for the outer diameter control of the cable semi-finished product core
1.0mm ensures the close coated online wicking surface of lead sheath.
3. high voltage power cable according to claim 1 extrudes lead sheath and non metallic sheath continuous producing method, special
Sign is：Institute's matcoveredn production process is carried out continuously under crawling traction machine travel, is at the uniform velocity walked.
4. the high voltage power cable according to claim 1 or 2 or 3 extrudes lead sheath and non metallic sheath continuous production side
Method, it is characterized in that：Under the action of dragger, the core that lead sheath extrudes completion is advanced forward, into bitumen coating device, drip
Pitch is heated to 145 DEG C -165 DEG C by blue or green applying device.
5. the high voltage power cable according to claim 1 or 2 or 3 extrudes lead sheath and non metallic sheath continuous production side
Method, it is characterised in that：Bitumen coating sets rubber pattern to behind lead sheath surface in applying device exit.
6. the high voltage power cable according to claim 1 or 2 or 3 extrudes lead sheath and non metallic sheath continuous production side
Method, which is characterized in that the rubber pattern hole size D2 chooses size and is：Lead jacket outer diameter D3-3mm is acted in rubber pattern
Under, make lead sheath surface one layer of pitch of even application, and extra pitch is made to stay in applying device.
7. the high voltage power cable according to claim 1 or 2 or 3 extrudes lead sheath and non metallic sheath continuous production side
Method, which is characterized in that the nonmetallic outer jacket extruding machine, head are co-extruder head, are dual channel cloth in head
It puts, wherein, non metallic sheath layer is in inner laminar flow road, and outer semiconducting layer is in outer laminar flow road.
8. the high voltage power cable according to claim 1 or 2 or 3 extrudes lead sheath and non metallic sheath continuous production side
Method, which is characterized in that extruding machine mold core dimension D 4 is designed as lead sheath outer diameter D 3+10mm, and by squeezing tubular type mode, in cable core
In at the uniform velocity moving ahead, by adjusting two extruding machine gel quantities, the thickness of nonmetallic external sheath layer and outer semiconducting layer is adjusted.
9. high voltage power cable according to claim 1 extrudes lead sheath and non metallic sheath continuous producing method, special
Sign is that it is sub-sectional cooling sink that the bosh, which is equipped with, and wherein first segment sink exists water temperature control by temperature control device
55±10℃；Second segment sink is room temperature sink.
10. the high voltage power cable according to claim 1 or 2 or 3 or 9 extrudes lead sheath and non metallic sheath continuous production
Method, which is characterized in that the dragger is caterpillar-tractor, and equipped with belt with groove, groove radius r is 58-
62mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307096.6A CN108091452A (en) | 2017-12-11 | 2017-12-11 | High voltage power cable extrudes lead sheath and non metallic sheath continuous producing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711307096.6A CN108091452A (en) | 2017-12-11 | 2017-12-11 | High voltage power cable extrudes lead sheath and non metallic sheath continuous producing method |
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| Publication Number | Publication Date |
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| CN108091452A true CN108091452A (en) | 2018-05-29 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711307096.6A Pending CN108091452A (en) | 2017-12-11 | 2017-12-11 | High voltage power cable extrudes lead sheath and non metallic sheath continuous producing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017814A (en) * | 2019-05-29 | 2020-12-01 | 中天科技海缆有限公司 | Smooth aluminum sleeve environment-friendly flame-retardant high-voltage cable and manufacturing method thereof |
| CN112233861A (en) * | 2020-10-30 | 2021-01-15 | 中天科技海缆股份有限公司 | Cable sheath production line |
| CN114283991A (en) * | 2021-12-20 | 2022-04-05 | 杭州电缆股份有限公司 | Smooth aluminum sheath high-voltage power cable and production process thereof |
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| CN206379213U (en) * | 2017-02-03 | 2017-08-04 | 特变电工山东鲁能泰山电缆有限公司 | A kind of full power-frequency electromagnetic fields that block water |
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| CN103474179A (en) * | 2013-09-30 | 2013-12-25 | 上海南洋-藤仓电缆有限公司 | Manufacturing device and manufacturing method for watertight overhead protective cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112017814A (en) * | 2019-05-29 | 2020-12-01 | 中天科技海缆有限公司 | Smooth aluminum sleeve environment-friendly flame-retardant high-voltage cable and manufacturing method thereof |
| CN112233861A (en) * | 2020-10-30 | 2021-01-15 | 中天科技海缆股份有限公司 | Cable sheath production line |
| CN114283991A (en) * | 2021-12-20 | 2022-04-05 | 杭州电缆股份有限公司 | Smooth aluminum sheath high-voltage power cable and production process thereof |
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Application publication date: 20180529 |
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