CN113314272B - Manufacturing method of mica tape mineral insulation corrugated cylinder sheath cable - Google Patents
Manufacturing method of mica tape mineral insulation corrugated cylinder sheath cable Download PDFInfo
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- CN113314272B CN113314272B CN202110423291.5A CN202110423291A CN113314272B CN 113314272 B CN113314272 B CN 113314272B CN 202110423291 A CN202110423291 A CN 202110423291A CN 113314272 B CN113314272 B CN 113314272B
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- Prior art keywords
- mineral
- insulating layer
- layer
- temperature resistant
- manufacturing
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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
- H01B13/02—Stranding-up
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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
- H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
- H01B13/165—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying by spraying
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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
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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
- H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention discloses a method for manufacturing a mica tape mineral insulation corrugated cylinder sheath cable, which comprises the following steps: stranding a plurality of alloy wires to form a conductor; spraying insulating paint and insulating glue outside the conductor; wrapping a layer of mineral insulating layer on the outer side of the insulating glue; sleeving the cable core wrapped with the mineral insulating layer into a high-temperature resistant plastic pipe through sleeve equipment; then pouring high-temperature-resistant glue between the inner wall of the high-temperature-resistant plastic pipe and the outer wall of the mineral insulating layer; placing the high-temperature resistant plastic pipe filled with the high-temperature resistant glue into a vibration box, and uniformly dispersing the high-temperature resistant glue between the inner wall of the high-temperature resistant plastic pipe and the outer wall of the mineral insulating layer; the cable obtained by the manufacturing method can meet the fire resistance characteristic of the mineral insulated cable and the characteristic that the cable body does not release heat during combustion, has the characteristics of heat resistance and high fire resistance, and is simple in manufacturing process.
Description
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a method for manufacturing a mica tape mineral insulation corrugated cylinder sheath cable.
Background
With the continuous development of economy in China, the fire protection requirements of personnel intensive buildings such as super high-rise buildings, entertainment places, shopping squares and the like are continuously improved, the fire resistance, flame retardance and the like of cables are correspondingly improved, the cables capable of meeting the requirement of non-combustibility are mainly BTTZ cables with copper-zinc-magnesium oxide mineral insulating copper pipe sheath structures, the specific structures of the BTTZ cables are that an electrical red copper rod is used as a wire core, a seamless copper pipe is used as a sheath, and inorganic mineral magnesium oxide powder is used as a mineral insulating material to be processed and manufactured, the manufacturing length of the BTTZ cables is limited by the materials and the manufacturing process of the BTTZ cables, joints are increased, the waterproof treatment of the BTTZ cables is difficult, the insulation resistance is unqualified due to water entering the joints in the using process, and the BTTZ cables are poor in bending performance, cannot be coiled, and can only be transported in a circle and are difficult to construct.
In recent years, with the improvement of the level of related domestic materials and technical equipment, an RTTZ type mineral insulated cable appears on the basis of original mineral insulation, the fireproof cable adopts a copper conductor, the mineral insulation adopts a synthetic mica tape and a ceramic silicon rubber composite tape or a glass fiber cloth tape, an outer layer sheath adopts a corrugated copper sheath and a low-smoke halogen-free ring protection layer material to play a final protection role, the problem of limitation of the manufacturing length of the magnesium oxide mineral insulated cable is solved, the flexibility of the cable is increased, and the installation and the laying are more convenient. However, when the product is subjected to A-level incombustibility detection of GB31247-2014 Cable and optical cable flammability classification, the total heat value PCS of combustion of the ceramic silicon rubber composite tape and the glass fiber cloth tape exceeds 2MJ/kg, the A-level incombustibility cannot be met, and meanwhile, the structure and the process are too complex, and the production and processing cost is high.
Disclosure of Invention
The invention aims to solve the problems, and provides a method for manufacturing a mica tape mineral insulation corrugated cylinder sheath cable.
In order to achieve the technical purpose, the invention adopts a manufacturing method of a mica tape mineral insulation corrugated cylinder sheath cable, which comprises the following steps:
(1) Stranding a plurality of alloy wires through stranding equipment to form a conductor;
(2) Uniformly spraying a layer of insulating paint on the outer side of the stranded conductor;
(3) After the insulating paint is completely dried, uniformly coating a layer of insulating glue on the outer side of the conductor sprayed with the insulating paint, and then wrapping a layer of mineral insulating layer on the outer side of the insulating glue along the extending direction of the conductor;
(4) Drying the cable core wrapped with the mineral insulating layer to achieve the purpose of removing moisture in the mineral insulating layer;
(5) Sleeving the cable core wrapped with the mineral insulating layer into a high-temperature resistant plastic pipe through sleeve equipment; then pouring high-temperature-resistant glue between the inner wall of the high-temperature-resistant plastic pipe and the outer wall of the mineral insulating layer;
(6) Placing the high-temperature resistant plastic pipe filled with the high-temperature resistant glue into a vibration box, and uniformly dispersing the high-temperature resistant glue between the inner wall of the high-temperature resistant plastic pipe and the outer wall of the mineral insulating layer;
(7) And (3) welding the corrugated copper strip outside the high-temperature resistant plastic pipe through argon arc welding to form a sheath layer.
Preferably, in the step (1), the alloy wire is made of copper-silver alloy.
Further preferably, before the step (1), the copper-silver alloy is annealed, wherein the annealing temperature is 570-580 ℃.
Still more preferably, in the step (3), the mineral insulation layer is a double-sided synthetic fluorophlogopite tape, the thickness of the double-sided synthetic fluorophlogopite tape is 0.15-0.17mm, and the overlapping rate of the overlapped lapping of the double-sided synthetic fluorophlogopite tape is 28-37%.
More preferably, in the step (4), the drying temperature is set to be 80-85 ℃ and the drying time is set to be 9-12 hours.
After the manufacturing method is adopted, the invention has the following advantages:
1. the cable manufactured by the cable manufacturing method can meet the requirements of bending performance and flattening performance of the cable, and meanwhile, the convenience of transportation is improved;
2. the invention adopts the process of pouring the high-temperature resistant glue between the inner wall of the high-temperature resistant plastic pipe and the outer wall of the mineral insulating layer, thereby not only improving the overall high-temperature resistance of the cable, but also simplifying the overall structure and increasing the connectivity of the high-temperature resistant plastic pipe and the mineral insulating layer.
Detailed Description
The present invention will be further described with reference to the following embodiments.
A manufacturing method of a mica tape mineral insulation corrugated cylinder sheath cable comprises the following steps:
(1) Stranding a plurality of alloy wires through stranding equipment to form a conductor;
(2) Uniformly spraying a layer of insulating paint on the outer side of the stranded conductor; and insulating paint is uniformly sprayed on the outer side of the conductor, so that the insulation property of the outer part of the conductor is better.
(3) After the insulating paint is completely dried, uniformly coating a layer of insulating glue on the outer side of the conductor sprayed with the insulating paint, and then wrapping a layer of mineral insulating layer on the outer side of the insulating glue along the extending direction of the conductor;
(4) Drying the cable core wrapped with the mineral insulating layer to achieve the purpose of removing moisture in the mineral insulating layer;
(5) Sleeving the cable core wrapped with the mineral insulating layer into a high-temperature resistant plastic pipe through sleeve equipment; then pouring high-temperature-resistant glue between the inner wall of the high-temperature-resistant plastic pipe and the outer wall of the mineral insulating layer;
(6) Placing the high-temperature resistant plastic pipe with the high-temperature resistant glue into a vibration box, so that the high-temperature resistant glue is uniformly dispersed between the inner wall of the high-temperature resistant plastic pipe and the outer wall of the mineral insulating layer;
(7) And (3) welding the corrugated copper strip outside the high-temperature resistant plastic pipe through argon arc welding to form a sheath layer.
Preferably, in the step (1), the alloy wire is made of copper-silver alloy. The copper-silver alloy has the outstanding characteristic of strong sulfide resistance. AgCu5, agCu7.5, agCu10, agCu15, agCu20, agCuNi20-2, agCu25 and the like are used as electric contact materials. The brazing solder mainly comprises AgCu7.5, agCu25, agCu28, agCu55 and the like, and is widely applied to AgCu 28. Has good conductivity, fluidity and wettability.
Further preferably, before the step (1), the copper-silver alloy is annealed at a temperature of 570-580 ℃.
Still more preferably, in the step (3), the mineral insulation layer is a double-sided synthetic fluorophlogopite tape, the thickness of the double-sided synthetic fluorophlogopite tape is 0.15-0.17mm, and the overlapping rate of the overlapping lapping of the double-sided synthetic fluorophlogopite tape is 28-37%. The superposition rate of 28-37% is set, so that the double-sided synthetic fluorophlogopite tape and the insulating glue can be better combined.
More preferably, in the step (4), the drying temperature is set to be 80-85 ℃ and the drying time is set to be 9-12 hours, and the moisture in the mineral insulating layer can be removed more completely by adopting the drying temperature interval and the drying time.
Generally, the cable manufactured by the cable manufacturing method can meet the requirements of the bending performance and the flattening performance of the cable, and meanwhile, the transportation convenience is improved; meanwhile, the invention adopts the process of pouring the high-temperature-resistant glue between the inner wall of the high-temperature-resistant plastic pipe and the outer wall of the mineral insulating layer, thereby not only improving the overall high-temperature resistance of the cable, but also simplifying the overall structure and increasing the connectivity of the high-temperature-resistant plastic pipe and the mineral insulating layer.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A manufacturing method of a mica tape mineral insulation corrugated cylinder sheath cable is characterized by comprising the following steps:
(1) Stranding a plurality of alloy wires through stranding equipment to form a conductor;
(2) Uniformly spraying a layer of insulating paint on the outer side of the stranded conductor;
(3) After the insulating paint is completely dried, uniformly coating a layer of insulating glue on the outer side of the conductor sprayed with the insulating paint, and then wrapping a layer of mineral insulating layer on the outer side of the insulating glue along the extending direction of the conductor, wherein the layer of mineral insulating layer is a mica tape;
(4) Drying the cable core wrapped with the mineral insulating layer to achieve the purpose of removing moisture in the mineral insulating layer;
(5) Sleeving the cable core wrapped with the mineral insulating layer into a high-temperature resistant plastic pipe through sleeve equipment; then pouring high-temperature-resistant glue between the inner wall of the high-temperature-resistant plastic pipe and the outer wall of the mineral insulating layer;
(6) Placing the high-temperature resistant plastic pipe filled with the high-temperature resistant glue into a vibration box, and uniformly dispersing the high-temperature resistant glue between the inner wall of the high-temperature resistant plastic pipe and the outer wall of the mineral insulating layer;
(7) And (3) welding the corrugated copper strip outside the high-temperature resistant plastic pipe through argon arc welding to form a sheath layer.
2. The method for manufacturing a mica tape mineral insulation corrugated cylinder sheath cable according to claim 1, wherein in the step (1), the alloy wire is made of copper-silver alloy.
3. The method for manufacturing the mica tape mineral insulation corrugated sleeve sheathed cable according to claim 1, wherein the copper-silver alloy is annealed at 570-580 ℃ before the step (1).
4. The method for manufacturing a mica tape mineral insulation corrugated sleeve sheathed cable according to claim 1, wherein in the step (3), the mineral insulation layer is a double-sided synthetic fluorophlogopite tape, the thickness of the double-sided synthetic fluorophlogopite tape is 0.15-0.17mm, and the overlapping wrapping rate of the double-sided synthetic fluorophlogopite tape is 28-37%.
5. The manufacturing method of the mica tape mineral insulation corrugated cylinder sheath cable according to the claim 1, characterized in that in the step (4), the drying temperature is set to be 80-85 ℃ and the drying time is set to be 9-12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423291.5A CN113314272B (en) | 2021-04-20 | 2021-04-20 | Manufacturing method of mica tape mineral insulation corrugated cylinder sheath cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423291.5A CN113314272B (en) | 2021-04-20 | 2021-04-20 | Manufacturing method of mica tape mineral insulation corrugated cylinder sheath cable |
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|---|---|
| CN113314272A CN113314272A (en) | 2021-08-27 |
| CN113314272B true CN113314272B (en) | 2022-11-11 |
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| CN202110423291.5A Active CN113314272B (en) | 2021-04-20 | 2021-04-20 | Manufacturing method of mica tape mineral insulation corrugated cylinder sheath cable |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016024889A (en) * | 2014-07-17 | 2016-02-08 | エス・ディ・ケイ株式会社 | Cable and method for producing cable |
| CN108806847A (en) * | 2017-10-23 | 2018-11-13 | 江西瑞金金字电线电缆有限公司 | A kind of flexible mineral insulation cable with water preventing ability |
| CN211016597U (en) * | 2019-10-24 | 2020-07-14 | 瑞鑫集团有限公司 | Rubber jacketed flexible cable |
-
2021
- 2021-04-20 CN CN202110423291.5A patent/CN113314272B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016024889A (en) * | 2014-07-17 | 2016-02-08 | エス・ディ・ケイ株式会社 | Cable and method for producing cable |
| CN108806847A (en) * | 2017-10-23 | 2018-11-13 | 江西瑞金金字电线电缆有限公司 | A kind of flexible mineral insulation cable with water preventing ability |
| CN211016597U (en) * | 2019-10-24 | 2020-07-14 | 瑞鑫集团有限公司 | Rubber jacketed flexible cable |
Non-Patent Citations (1)
| Title |
|---|
| 环保型矿物绝缘耐火电缆的研制;吴来利等;《电线电缆》;20201025(第5期);第19-21页 * |
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| CN113314272A (en) | 2021-08-27 |
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