CN113096871A - Processing technology of fire-resistant medium-voltage power cable - Google Patents
Processing technology of fire-resistant medium-voltage power cable Download PDFInfo
- Publication number
- CN113096871A CN113096871A CN202110398119.9A CN202110398119A CN113096871A CN 113096871 A CN113096871 A CN 113096871A CN 202110398119 A CN202110398119 A CN 202110398119A CN 113096871 A CN113096871 A CN 113096871A
- Authority
- CN
- China
- Prior art keywords
- conductor
- fire
- power cable
- voltage power
- wire
- Prior art date
- 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.)
- Pending
Links
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 44
- 238000005491 wire drawing Methods 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 29
- 229920000098 polyolefin Polymers 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000137 annealing Methods 0.000 claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 7
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract 5
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract 1
- 239000004703 cross-linked polyethylene Substances 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- 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
- H01B13/141—Insulating conductors or cables by extrusion of two or more insulating 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
- H01B13/24—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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
A processing technology of a fire-resistant medium-voltage power cable comprises the following steps: fully winding the copper wire on a constant speed wheel and a wire distributing wheel of a wire drawing machine, and guiding the copper wire to a take-up reel for annealing and wire drawing; arranging a pay-off reel in a twisting frame; the insulation adopts dry-method cross-linked polyethylene, the conductor shield and the insulation shield are semiconductor materials, and the conductor shields and the insulation shield are extruded by three layers of totalizing equipment and uniformly coated on the stranded copper conductor; cabling adopts double-layer synthetic mica tape lapping; placing the ceramized polyolefin into an extruding machine to enable the ceramized polyolefin to be burnt on the core conductor to generate a layer of ceramic shell; after cabling, the pressure resistance test is qualified and passes through a sheathing machine, and an outer sheath and an armor layer are added. This fire-resistant middling pressure power cable processing technology can effectively stop stretching of flame on the cable when the conflagration to water gets into in the cable when effectively preventing the fire control and puts out a fire and contacts with the heart yearn among the sheath, and the ceramic ization of interior sheath can play certain supporting role, can effectively avoid outer core line to suffer outside mechanical damage, effectively prevents to damage after the insulating burning and leads to the conductor short circuit.
Description
Technical Field
The invention relates to the technical field of cable processing, in particular to a processing technology of a fire-resistant medium-voltage power cable.
Background
In recent years, the economy of China continues to rapidly increase, a huge market space is provided for cable products, and the cable manufacturing technology is rapidly developed. A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. The power cable is a cable product used for transmitting and distributing high-power electric energy in a main line of a power system, and comprises various insulated power cables with voltage grades of 1-500 KV and above. The power cables can be divided into medium-voltage power cables mainly of 35 kilovolts or less, high-voltage cables mainly of more than 110 kilovolts, ultrahigh-voltage cables mainly of 275-800 kilovolts and ultrahigh-voltage cables mainly of 1000 kilovolts or more according to voltage grades. At present, the conventional medium-voltage power cable is low in fire resistance, and particularly, a fire disaster in a building outlet generally accompanies falling object impact and fire water spraying, so that normal use cannot be guaranteed in the state, and the aim of fire resistance is not achieved. That is, the existing fire-resistant medium-voltage power cable can only be normally used under the flame of 750-800 ℃ for 90min and the flame is stopped for 15min according to the GB/T19666-2005 regulations, all tests are completed under the static state of the cable, the use requirements cannot be met, and the normal use of the medium-voltage power cable is influenced.
Disclosure of Invention
The invention mainly aims to solve the defects and provides a processing technology of a fire-resistant medium-voltage power cable, which has good fire resistance, ensures the quality of the medium-voltage power cable and ensures the normal use of the medium-voltage power cable.
A processing technology of a fire-resistant medium-voltage power cable comprises the following steps: (1) annealing and drawing the conductor: checking the wire drawing machine constant speed wheel to be smooth and flat, fully winding copper wires on the wire drawing machine constant speed wheel and the wire distributing wheel, and guiding the copper wires to a take-up reel, wherein the annealing wire drawing speed is 3-5 m/min, and the annealing wire drawing temperature is 235-245 ℃; and (2) twisting the conductor: arranging a pay-off reel in a twisting frame, adjusting the tension of the pay-off reel, arranging a take-up reel, connecting a traction rope, checking uniform twisting, and setting the distance between two joints on a finished twisted wire to be 8-10 m; (3) insulation and shielding: adding an insulating material, a conductor shielding material and an insulating shielding material into three-layer totalizing equipment, wherein the temperature of extrusion equipment is 90-120 ℃, plasticizing and extruding plastics through the rotation of an extruder screw rod, and uniformly coating the plastics on a copper conductor; (4) cabling production: the cabling adopts double-layer synthetic mica tape wrapping, the wire core is spirally cabled by a cabling machine, the wire core moves from right to left, and the whole device rotates around a shaft by a pressing device through a shaft by a chain and a gear system; (5) manufacturing the inner sheath: placing the ceramic polyolefin into an extruder, heating to 120-130 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath; (6) manufacturing an outer layer: and performing a pressure test on the semi-finished product of the medium-voltage power cable after cabling, and adding an outer sheath and an armor layer on the semi-finished product of the medium-voltage power cable qualified in the pressure test by a sheathing machine to obtain a finished product of the fire-resistant medium-voltage power cable.
Further, the fire-resistant medium-voltage power cable processing technology comprises the following steps of (1) conductor annealing and wire drawing: and (3) checking the smoothness and the flatness of the constant speed wheel of the wire drawing machine, fully winding the copper wire on the constant speed wheel and the wire distributing wheel of the wire drawing machine, and guiding the copper wire to a take-up reel at an annealing wire drawing speed of 3m/min and an annealing wire drawing temperature of 240 ℃.
Further, in the step (2) of the fire-resistant medium-voltage power cable processing technology, the conductor is stranded: and (3) arranging the pay-off spool in the twisting frame, adjusting the tension of the pay-off spool, arranging the take-up spool, connecting the traction rope, checking the uniform twisting, and keeping the distance between two joints on the finished twisted wire to be 8 m.
Further, the inner sheath manufacturing step (3) of the fire-resistant medium-voltage power cable processing technology is as follows: and adding the insulating material, the conductor shielding material and the insulating shielding material into a three-layer totalizing device, wherein the temperature of an extrusion device is 105 ℃, plasticizing and extruding plastics through the rotation of a screw rod of an extruder, and uniformly coating the plastics on the copper conductor.
Further, the manufacturing of the inner sheath in the step (5) of the fire-resistant medium-voltage power cable processing technology comprises the following steps: and (3) putting the ceramic polyolefin into an extruder, heating to 125 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath.
Compared with the prior art, the invention has the beneficial technical effects that: according to the processing technology of the fire-resistant medium-voltage power cable, ceramic polyolefin is adopted by the inner sheath, double-layer synthetic mica tapes are wound for cabling, and the synthetic mica tapes can effectively prevent short circuit of conductors caused by damage after insulation combustion. The manufactured fire-resistant medium-voltage power cable structure can meet the requirements of 180min under 950 ℃ flame, water-fire resistance test, mechanical impact resistance and fire resistance test, can completely achieve the fire-resistant purpose, and is suitable for popularization and application.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
A processing technology of a fire-resistant medium-voltage power cable comprises the following steps:
(1) annealing and drawing the conductor: checking the wire drawing machine constant speed wheel to be smooth and flat, fully winding copper wires on the wire drawing machine constant speed wheel and the wire distributing wheel, and guiding the copper wires to a take-up reel, wherein the annealing wire drawing speed is 3-5 m/min, and the annealing wire drawing temperature is 235-245 ℃;
(2) twisting a conductor: arranging a pay-off reel in a twisting frame, adjusting the tension of the pay-off reel, arranging a take-up reel, connecting a traction rope, checking uniform twisting, and setting the distance between two joints on a finished twisted wire to be 8-10 m;
(3) insulation and shielding: adding an insulating material, a conductor shielding material and an insulating shielding material into three-layer totalizing equipment, wherein the temperature of extrusion equipment is 90-120 ℃, plasticizing and extruding plastics through the rotation of an extruder screw rod, and uniformly coating the plastics on a copper conductor;
(4) cabling production: the cabling adopts double-layer synthetic mica tape wrapping, the wire core is spirally cabled by a cabling machine, the wire core moves from right to left, and the whole device rotates around a shaft by a pressing device through a shaft by a chain and a gear system;
(5) manufacturing the inner sheath: placing the ceramic polyolefin into an extruder, heating to 120-130 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath;
(6) manufacturing an outer layer: and performing a pressure test on the semi-finished product of the medium-voltage power cable after cabling, and adding an outer sheath and an armor layer on the semi-finished product of the medium-voltage power cable qualified in the pressure test by a sheathing machine to obtain a finished product of the fire-resistant medium-voltage power cable.
In order to make the annealing and wire drawing effects of the conductor better and improve the quality of the processed power cable. The processing technology of the fire-resistant medium-voltage power cable is characterized by comprising the following steps of: the conductor annealing and wire drawing in the step (1): and (3) checking the smoothness and the flatness of the constant speed wheel of the wire drawing machine, fully winding the copper wire on the constant speed wheel and the wire distributing wheel of the wire drawing machine, and guiding the copper wire to a take-up reel at an annealing wire drawing speed of 3m/min and an annealing wire drawing temperature of 240 ℃.
Ensuring the quality of the power cable. The fire-resistant medium-voltage power cable processing technology comprises the following steps of (2) conductor stranding: and (3) arranging the pay-off spool in the twisting frame, adjusting the tension of the pay-off spool, arranging the take-up spool, connecting the traction rope, checking the uniform twisting, and keeping the distance between two joints on the finished twisted wire to be 8 m.
In order to ensure that the power cable can better resist fire and meet the use requirement. The step (3) of the fire-resistant medium-voltage power cable processing technology is insulation and shielding: and adding the insulating material, the conductor shielding material and the insulating shielding material into a three-layer totalizing device, wherein the temperature of an extrusion device is 105 ℃, plasticizing and extruding plastics through the rotation of a screw rod of an extruder, and uniformly coating the plastics on the copper conductor. Preferably, the inner sheath is manufactured in the step (5): and (3) putting the ceramic polyolefin into an extruder, heating to 125 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath.
A layer of ceramic shell is generated when the ceramic polyolefin is burnt, and the synthesized mica tape can effectively prevent conductor short circuit caused by damage after insulation burning; the cable structure can meet the requirements of 180min under 950 ℃ flame, water and fire resistance test, mechanical impact resistance and fire resistance test, and can completely achieve the purpose of fire resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A processing technology of a fire-resistant medium-voltage power cable is characterized by comprising the following steps: the processing technology of the fire-resistant medium-voltage power cable comprises the following steps:
(1) annealing and drawing the conductor: checking the wire drawing machine constant speed wheel to be smooth and flat, fully winding copper wires on the wire drawing machine constant speed wheel and the wire distributing wheel, and guiding the copper wires to a take-up reel, wherein the annealing wire drawing speed is 3-5 m/min, and the annealing wire drawing temperature is 235-245 ℃;
(2) twisting a conductor: arranging a pay-off reel in a twisting frame, adjusting the tension of the pay-off reel, arranging a take-up reel, connecting a traction rope, checking uniform twisting, and setting the distance between two joints on a finished twisted wire to be 8-10 m;
(3) insulation and shielding: adding an insulating material, a conductor shielding material and an insulating shielding material into three-layer totalizing equipment, wherein the temperature of extrusion equipment is 90-120 ℃, plasticizing and extruding plastics through the rotation of an extruder screw rod, and uniformly coating the plastics on a copper conductor;
(4) cabling production: the cabling adopts double-layer synthetic mica tape wrapping, the wire core is spirally cabled by a cabling machine, the wire core moves from right to left, and the whole device rotates around a shaft by a pressing device through a shaft by a chain and a gear system;
(5) manufacturing the inner sheath: placing the ceramic polyolefin into an extruder, heating to 120-130 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath;
(6) manufacturing an outer layer: and performing a pressure test on the semi-finished product of the medium-voltage power cable after cabling, and adding an outer sheath and an armor layer on the semi-finished product of the medium-voltage power cable qualified in the pressure test by a sheathing machine to obtain a finished product of the fire-resistant medium-voltage power cable.
2. The process for manufacturing a fire-resistant medium voltage power cable according to claim 1, characterized in that: the conductor annealing and wire drawing in the step (1): and (3) checking the smoothness and the flatness of the constant speed wheel of the wire drawing machine, fully winding the copper wire on the constant speed wheel and the wire distributing wheel of the wire drawing machine, and guiding the copper wire to a take-up reel at an annealing wire drawing speed of 3m/min and an annealing wire drawing temperature of 240 ℃.
3. The process for manufacturing a fire-resistant medium voltage power cable according to claim 1 or 2, characterized in that: and (3) twisting the conductor in the step (2): and (3) arranging the pay-off spool in the twisting frame, adjusting the tension of the pay-off spool, arranging the take-up spool, connecting the traction rope, checking the uniform twisting, and keeping the distance between two joints on the finished twisted wire to be 8 m.
4. The process for manufacturing a fire-resistant medium voltage power cable according to claim 3, characterized in that: the step (3) of insulating and shielding: and adding the insulating material, the conductor shielding material and the insulating shielding material into a three-layer totalizing device, wherein the temperature of an extrusion device is 105 ℃, plasticizing and extruding plastics through the rotation of a screw rod of an extruder, and uniformly coating the plastics on the copper conductor.
5. The process for manufacturing a fire-resistant medium voltage power cable according to claim 4, wherein: manufacturing the inner sheath in the step (5): and (3) putting the ceramic polyolefin into an extruder, heating to 125 ℃ for melting, extruding the molten ceramic polyolefin onto the cabled core conductor through an extruding mechanism of the extruder, and burning the ceramic polyolefin to generate a ceramic shell on the core conductor to finish the manufacture of the inner sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110398119.9A CN113096871A (en) | 2021-04-14 | 2021-04-14 | Processing technology of fire-resistant medium-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110398119.9A CN113096871A (en) | 2021-04-14 | 2021-04-14 | Processing technology of fire-resistant medium-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113096871A true CN113096871A (en) | 2021-07-09 |
Family
ID=76677043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110398119.9A Pending CN113096871A (en) | 2021-04-14 | 2021-04-14 | Processing technology of fire-resistant medium-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113096871A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2413331A1 (en) * | 2010-07-27 | 2012-02-01 | Controlcavi Industria S.r.l. | Flexible middle voltage (3.6/6 kV - 6/10 kV - 8.7/15 kV - 12/20 kV) electric cable resistant against fire, mechanical impacts and water jets, according to the Standard BS 7846:2009 CAT. F60 |
| WO2015096211A1 (en) * | 2013-12-25 | 2015-07-02 | 深圳市联嘉祥科技股份有限公司 | Fire-resistant wire cable and manufacturing method therefor |
| CN106057344A (en) * | 2016-07-28 | 2016-10-26 | 江苏长峰电缆有限公司 | Impact-resistant spray-resistant, halogen-free, low-smoke flame-retardant medium voltage fire-resistant cable |
| CN106981341A (en) * | 2017-05-17 | 2017-07-25 | 中天射频电缆有限公司 | A kind of high fire-retardance high temperature resistant fireproof data cable and its preparation technology |
| CN110136892A (en) * | 2019-06-21 | 2019-08-16 | 尚纬股份有限公司 | A kind of ceramic polyolefin fire prevention midium voltage cable manufacturing method |
| CN209912545U (en) * | 2019-07-04 | 2020-01-07 | 广东环威电线电缆股份有限公司 | Corrosion-resistant and ceramic flexible insulating fireproof cable |
| CN209980847U (en) * | 2019-08-18 | 2020-01-21 | 湖北鄂电萃宇电缆有限公司 | Medium-voltage fireproof power cable |
| CN111681832A (en) * | 2020-06-15 | 2020-09-18 | 湖北三佳电线电缆有限公司 | Processing method of fireproof cable |
-
2021
- 2021-04-14 CN CN202110398119.9A patent/CN113096871A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2413331A1 (en) * | 2010-07-27 | 2012-02-01 | Controlcavi Industria S.r.l. | Flexible middle voltage (3.6/6 kV - 6/10 kV - 8.7/15 kV - 12/20 kV) electric cable resistant against fire, mechanical impacts and water jets, according to the Standard BS 7846:2009 CAT. F60 |
| WO2015096211A1 (en) * | 2013-12-25 | 2015-07-02 | 深圳市联嘉祥科技股份有限公司 | Fire-resistant wire cable and manufacturing method therefor |
| CN106057344A (en) * | 2016-07-28 | 2016-10-26 | 江苏长峰电缆有限公司 | Impact-resistant spray-resistant, halogen-free, low-smoke flame-retardant medium voltage fire-resistant cable |
| CN106981341A (en) * | 2017-05-17 | 2017-07-25 | 中天射频电缆有限公司 | A kind of high fire-retardance high temperature resistant fireproof data cable and its preparation technology |
| CN110136892A (en) * | 2019-06-21 | 2019-08-16 | 尚纬股份有限公司 | A kind of ceramic polyolefin fire prevention midium voltage cable manufacturing method |
| CN209912545U (en) * | 2019-07-04 | 2020-01-07 | 广东环威电线电缆股份有限公司 | Corrosion-resistant and ceramic flexible insulating fireproof cable |
| CN209980847U (en) * | 2019-08-18 | 2020-01-21 | 湖北鄂电萃宇电缆有限公司 | Medium-voltage fireproof power cable |
| CN111681832A (en) * | 2020-06-15 | 2020-09-18 | 湖北三佳电线电缆有限公司 | Processing method of fireproof cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105679436B (en) | A kind of high shielding data cable of high speed and its production technology | |
| CN107833690B (en) | Environment-friendly fire-resistant medium-voltage multi-core cable and manufacturing method thereof | |
| CN109448921B (en) | Manufacturing method of inorganic fireproof medium-high voltage cable | |
| CN107731416B (en) | Manufacturing method of special polyvinyl chloride insulated electronic wire and electronic wire | |
| CN105206346A (en) | Multifunctional fire-resistant environment-friendly audio signal cable and preparation technology thereof | |
| WO2021135051A1 (en) | Lightweight variable frequency flexible cable for ship and marine platform, and manufacturing method therefor | |
| CN105825934A (en) | Cable for medical equipment, and preparation method thereof | |
| CN111029027A (en) | Intelligent self-checking environment-friendly medium-voltage cable and manufacturing method thereof | |
| CN112489873A (en) | Special-shaped conductor polypropylene insulation power cable and processing method thereof | |
| CN113096871A (en) | Processing technology of fire-resistant medium-voltage power cable | |
| CN202650631U (en) | Cable for aerospace | |
| CN115083676A (en) | Cable for nuclear power station for warship and manufacturing device | |
| CN105609180A (en) | Ultralow-temperature instrument control cable and preparation method thereof | |
| CN113990571A (en) | Anti-ultraviolet high-flame-retardant track traffic signal cable and preparation method thereof | |
| CN202976938U (en) | Six-core flame retardation light cable | |
| CN113096889A (en) | Method for manufacturing low-temperature-resistant long-service-life thin plastic insulated cable for motor train unit | |
| CN202632854U (en) | Extraordinary mixing cable | |
| CN112233838A (en) | Special cable for intelligent monitoring for rail transit and production process thereof | |
| RU2417470C1 (en) | Mounting cable, mostly explosion-proof, for high-speed automatics systems (versions) | |
| CN205789192U (en) | A kind of ultralow temperature instrumentation control cable | |
| CN219832260U (en) | Optical fiber composite fire-resistant medium-voltage cable | |
| CN113628782B (en) | Medium-voltage power flexible cable for wind power generation | |
| CN218069402U (en) | Anti-interference twisted-pair for high-frequency transmission | |
| CN212411653U (en) | Mineral insulated cable with fire-resistant embossing aluminum sheath | |
| CN203397730U (en) | Audio/video data power network cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiao Qiulei Inventor after: Chen Kaixuan Inventor after: Li Gaochan Inventor after: Mao Youjiao Inventor after: Zhang Lei Inventor before: Xiao Qiulei Inventor before: Zhang Lei Inventor before: Chen Kaixuan |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210709 |