CN111341491A - Waterproof environment-friendly cable with long service life and preparation method thereof - Google Patents
Waterproof environment-friendly cable with long service life and preparation method thereof Download PDFInfo
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- CN111341491A CN111341491A CN202010258702.5A CN202010258702A CN111341491A CN 111341491 A CN111341491 A CN 111341491A CN 202010258702 A CN202010258702 A CN 202010258702A CN 111341491 A CN111341491 A CN 111341491A
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- 238000009413 insulation Methods 0.000 claims abstract description 40
- 239000002131 composite material Substances 0.000 claims abstract description 30
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- 239000004033 plastic Substances 0.000 claims abstract description 30
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 239000012774 insulation material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 9
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000004132 cross linking Methods 0.000 claims description 36
- 238000001125 extrusion Methods 0.000 claims description 24
- 239000011810 insulating material Substances 0.000 claims description 20
- 239000000779 smoke Substances 0.000 claims description 11
- 239000004698 Polyethylene Substances 0.000 claims description 10
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- 238000000034 method Methods 0.000 claims description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
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- 229910052802 copper Inorganic materials 0.000 claims description 6
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- 239000007787 solid Substances 0.000 claims description 3
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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
- H01B9/00—Power 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
- H01B13/003—Apparatus or processes specially adapted for manufacturing conductors or cables using irradiation
-
- 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
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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
- H01B13/32—Filling or coating with impervious material
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
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- 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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
-
- 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
- H01B7/02—Disposition of insulation
- H01B7/0291—Disposition of insulation comprising two or more layers of insulation having different electrical properties
-
- 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
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- 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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- 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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a waterproof environment-friendly cable with long service life, which comprises a plurality of conductors, an inner insulating layer, an outer insulating layer, filling, a water blocking layer, an aluminum-plastic composite layer and an outer sheath. The waterproof multi-core low-voltage power cable with long service life can meet the requirement of users on the long service life of the cable and can also be waterproof; due to the design of the double-layer insulation structure, the overall comprehensive performance of the insulation material of the cable is good, the service temperature is high, and the service life is long; the water-blocking yarns and the water-blocking tapes are used for preventing water from invading the insulating layer during cabling; after the environment-friendly high-density polyethylene sheath is extruded outside the aluminum-plastic composite belt, an aluminum-plastic composite sheath layer can be formed, so that the radial water-blocking effect and the moisture-proof effect of the cable are greatly improved, and the cable insulation is prevented from being punctured due to erosion of rainwater.
Description
Technical Field
The invention relates to the field of electric wires and cables, in particular to a waterproof environment-friendly multi-core low-voltage power cable with long service life, which is suitable for a power distribution network or an industrial device with rated voltage of 0.6/1kV or below.
Background
Since the last 90 years, the wiring mode of the commercial houses in China is changed from open wiring to dark wiring, and the service life of the wires and the cables is generally not more than 30 years due to factors such as technology, process, materials and the like. In 2014, the Ministry of the residences in the Minam reviewed two recommended industry standards (JG/T441-2014 and JG/T442-2014) for the wires and cables for buildings, and the standards firstly pushed the service life of the wires and cables to be not less than 70 years.
Because the cable insulation layer gradually ages in normal operation, if the service life exceeds a certain age, safety accidents such as electric leakage and fire can be caused. However, since the price of the cable is generally high and the replacement difficulty is high, many wires and cables are excessively used to save cost and avoid troubles. Meanwhile, some cable manufacturing enterprises use inferior raw materials in consideration of costs. The above factors all result in the occurrence of safety accidents. After the industry of the department of housing and construction publishes, the long-life cable is selected by some high-rise buildings and key public facilities, and becomes a development opportunity of cable enterprises. On the basis, in order to meet the requirements of customers on water resistance and environmental protection, the company provides a long-service-life, water-resistant and environment-friendly multi-core low-voltage power cable. The insulating layer adopts double-layer co-extrusion, and the extruded insulating layer is irradiated and crosslinked by an electron accelerator, so that the performance, the service temperature and the service life of the insulating material are improved; the waterproof layer comprises a water-blocking tape wrapped outside the cable core, an aluminum-plastic composite tape layer and a high-density polyethylene layer, and the materials do not contain halogen, lead, cadmium and other components.
Disclosure of Invention
In order to solve the technical problems, the invention provides a waterproof environment-friendly cable with long service life, which comprises a plurality of conductors, an inner insulating layer, an outer insulating layer, filling, a water blocking layer, an aluminum-plastic composite layer and an outer sheath, wherein the inner insulating layer and the outer insulating layer are arranged outside the conductors, the inner insulating layer is an irradiation crosslinking polyethylene insulating material, the outer insulating layer is an irradiation crosslinking halogen-free low-smoke flame-retardant polyolefin insulating material, and double-layer co-extrusion is adopted during insulation extrusion; filling gaps of the cable core with water-blocking yarns, and wrapping the water-blocking tapes outside the cable core; the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, and the aluminum-plastic composite tape is tightly extruded with a layer of high-density polyethylene sheath and is fixedly connected with the aluminum-plastic composite tape layer into a whole.
Preferably, the conductor adopts the 1 st or 2 nd copper conductor required by GB/T3956-.
Preferably, the thickness of the inner layer insulation accounts for 15% -20% of the total thickness of the insulation, and the thickness of the outer layer insulation accounts for 80% -85% of the total thickness of the insulation.
The invention also provides a preparation method of the waterproof and environment-friendly cable with long service life, which is characterized in that,
(1) a conductor: the 1 st solid or 2 nd twisted round compacted copper conductor required by GB/T3956-;
(2) insulating extrusion and crosslinking: double-layer co-extrusion of an irradiation crosslinking polyethylene insulating material and a halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating material is adopted, and an extruded insulating layer is subjected to irradiation crosslinking by adopting an electron accelerator;
(2.1) insulation extrusion: the inner layer insulation is made of natural-color irradiation crosslinking polyethylene insulation material, and the outer layer insulation is made of colored halogen-free low-smoke irradiation crosslinking olefin insulation material, wherein the inner layer insulation thickness accounts for 15% -20% of the total insulation thickness, and the outer layer insulation thickness accounts for 80% -85% of the total insulation thickness; the extrusion linear speed is 80-120 m/min during the double-layer coextrusion, and the extrusion temperature is 100-150 ℃;
(2.2) crosslinking: after the insulating layer is extruded, carrying out irradiation crosslinking to melt the inner insulating material and the outer insulating material into a whole; an AB-2.5MeV high-frequency high-voltage electron accelerator is adopted to complete an insulating layer irradiation crosslinking process, the high voltage is 2.5MeV, the total flow is 25mA, the beam current is 14mA, the corresponding speed is 20-30, the linear speed is 30-50 m/min, and large-beam downward wiring is adopted;
(3) cabling and filling: the cable cores are cabled in the right direction, the gaps are filled with water-blocking yarns to be round, meanwhile, water-blocking tapes are wrapped outside the cable cores, and the width of the water-blocking tapes is 20% -30% of that of the tapes;
(4) waterproof jacket layer: the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, and the aluminum-plastic composite tape is tightly extruded with an environment-friendly high-density polyethylene sheath and is fixedly connected with the aluminum-plastic composite tape layer into a whole; the lapping cover of the aluminum-plastic composite belt longitudinal wrap is 20-30% of the width of the belt material, and is firmly welded by hot air.
The waterproof multi-core low-voltage power cable with long service life can meet the requirement of users on the long service life of the cable and can also be waterproof; due to the design of the double-layer insulation structure, the overall comprehensive performance of the insulation material of the cable is good, the service temperature is high, and the service life is long; the water-blocking yarns and the water-blocking tapes are used for preventing water from invading the insulating layer during cabling; after the environment-friendly high-density polyethylene sheath is extruded outside the aluminum-plastic composite belt, an aluminum-plastic composite sheath layer can be formed, so that the radial water-blocking effect and the moisture-proof effect of the cable are greatly improved, and the cable insulation is prevented from being punctured due to erosion of rainwater.
Drawings
The following detailed description is to be read in connection with the accompanying drawings and the detailed description:
fig. 1 is a schematic structural view of a long-life, waterproof, environmentally friendly cable of the present invention.
In the figure: 1. a conductor; 2. an inner insulating layer; 3. an outer insulating layer; 4. filling; 5. a water resistant layer; 6. an aluminum-plastic composite layer; 7. an outer sheath.
Detailed Description
The technical scheme is as follows:
1. selection of materials
(1) A conductor: the surface of the conductor is clean and burr-free by adopting the 1 st or 2 nd copper conductor required by GB/T3956-.
(2) Insulation: the insulation material includes an inner layer insulation material and an outer layer insulation material. The inner layer is irradiation crosslinking polyethylene insulation material, the outer layer is irradiation crosslinking halogen-free low-smoke flame-retardant polyolefin insulation material, and double-layer co-extrusion is adopted during insulation extrusion.
The radiation cross-linked polyethylene insulating material has excellent water resistance and air tightness. The water-based paint is used at low temperature, does not crack or harden, has good chemical stability and excellent water resistance and aging resistance, and can resist the corrosion of acid, alkali and salt water solution.
The halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating material has the advantages that the long-term working temperature of the cable can reach 150 ℃ at most, and the short-circuit temperature can reach 250 ℃ at most through irradiation crosslinking. The irradiated electric wire has the advantages of high aging resistance, high chemical stability, strong environmental stress cracking resistance, high mechanical strength and good safety.
(3) Filling and lapping: and the gaps of the cable core are filled with water-blocking yarns, and meanwhile, the cable core is wrapped with a water-blocking tape.
(4) Waterproof jacket layer: the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, and the aluminum-plastic composite tape is tightly extruded with a layer of high-density polyethylene sheath and is fixedly connected with the aluminum-plastic composite tape layer into a whole. This structure makes the radial effect, the dampproofing effect that blocks water of cable obtain very big promotion, avoids the cable insulation to take place to puncture because of the erosion of rainwater.
2. Process scheme
(1) A conductor: the 1 st solid or 2 nd twisted round compacted copper conductor required by GB/T3956-.
(2) Insulating extrusion and crosslinking: the method comprises the steps of carrying out double-layer co-extrusion on an irradiation crosslinking polyethylene insulating material and a halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating material, and carrying out irradiation crosslinking on an extruded insulating layer by using an electron accelerator. The problem that the thinnest point thickness of the insulating layer does not reach the standard and the eccentricity is too large is solved by the double-layer co-extrusion mode, meanwhile, the anti-aging service life of the insulating layer is prolonged due to the fact that the insulating layer is subjected to irradiation crosslinking, the service life is prolonged, the insulating material is an environment-friendly material, dense smoke is not generated when a fire disaster happens, halogen-containing toxic gas is not released, and the purposes of environmental protection and health are achieved.
(2.1) insulating extrusion, wherein the inner layer insulation is made of natural-color irradiation crosslinking polyethylene insulation material, the outer layer insulation is made of colored halogen-free low-smoke irradiation crosslinking olefin insulation material, the inner layer insulation thickness accounts for 15% -20% of the total insulation thickness, the outer layer insulation thickness accounts for 80% -85% of the total insulation thickness, the insulation thickness accounts for the total thickness of the inner layer and the outer layer, the insulation average thickness is required to be not less than a nominal value, the thinnest point is not less than × 90% -0.1mm, the eccentricity is not more than 10%, the extrusion linear speed is 80-120 m/min during double-layer extrusion, the extrusion temperature is 100-150 ℃, no visible air bubbles, sand holes and other defects exist on the section of the insulated wire core, the surface of the wire core is smooth, no obvious convex lines exist, and no sharp corners exist, particles, scorched or scratched traces exist.
(2.2) crosslinking: after the insulating layer is extruded, irradiation crosslinking is carried out, so that the inner layer insulating material and the outer layer insulating material are fused into a whole. An AB-2.5MeV high-frequency high-voltage electron accelerator is adopted to complete the irradiation crosslinking process of the insulating layer, the high voltage is 2.5MeV, the total flow is 25mA, the beam current is 14mA, the corresponding speed is 20-30, the linear speed is 30-50 m/min, a large beam downward wire arrangement is adopted, and the thermal extension and the residual performance after irradiation can meet the process requirements.
(3) Cabling and filling: the cable core is cabled in the right direction, the gaps are filled with water-blocking yarns to be round, meanwhile, the cable core is wrapped with a water-blocking tape, and the width of the water-blocking tape is 20% -30% of that of the tape.
(4) The waterproof jacket layer is characterized in that the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, the aluminum-plastic composite tape is tightly extruded with an environment-friendly high-density polyethylene jacket and fixedly connected with the aluminum-plastic composite tape layer into a whole, the lapping cover of the aluminum-plastic composite tape longitudinally wraps is 20% -30% of the width of the tape, the tape is firmly welded by hot air, the thinnest point of the polyethylene jacket is not less than the nominal value of × 85% -0.1mm, the surface of the jacket is smooth and flat, sharp corners, pockmarks, scorching or scratching marks are not needed, and the cross section has no visible defects such as bubbles, sand holes and the like.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A waterproof environment-friendly cable with long service life is characterized by comprising a plurality of conductors, an inner insulating layer, an outer insulating layer, filling, a water blocking layer, an aluminum-plastic composite layer and an outer sheath, wherein the inner insulating layer and the outer insulating layer are arranged outside the conductors, the inner insulating layer is an irradiation crosslinking polyethylene insulating material, the outer insulating layer is an irradiation crosslinking halogen-free low-smoke flame-retardant polyolefin insulating material, and double-layer co-extrusion is adopted during insulation extrusion; filling gaps of the cable core with water-blocking yarns, and wrapping the water-blocking tapes outside the cable core; the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, and the aluminum-plastic composite tape is tightly extruded with a layer of high-density polyethylene sheath and is fixedly connected with the aluminum-plastic composite tape layer into a whole.
2. The long-life, waterproof and environment-friendly cable as claimed in claim 1, wherein the conductor is made of the 1 st or 2 nd copper conductor required by GB/T3956-.
3. The long-life, waterproof, and environmentally friendly cable of claim 1, wherein the inner layer insulation thickness is 15% to 20% of the total insulation thickness, and the outer layer insulation thickness is 80% to 85% of the total insulation thickness.
4. The method of claim 1, wherein the cable is a waterproof, environmentally friendly cable,
(1) a conductor: the 1 st solid or 2 nd twisted round compacted copper conductor required by GB/T3956-;
(2) insulating extrusion and crosslinking: double-layer co-extrusion of an irradiation crosslinking polyethylene insulating material and a halogen-free low-smoke flame-retardant irradiation crosslinking polyolefin insulating material is adopted, and an extruded insulating layer is subjected to irradiation crosslinking by adopting an electron accelerator;
(2.1) insulation extrusion: the inner layer insulation is made of natural-color irradiation crosslinking polyethylene insulation material, and the outer layer insulation is made of colored halogen-free low-smoke irradiation crosslinking olefin insulation material, wherein the inner layer insulation thickness accounts for 15% -20% of the total insulation thickness, and the outer layer insulation thickness accounts for 80% -85% of the total insulation thickness; the extrusion linear speed is 80-120 m/min during the double-layer coextrusion, and the extrusion temperature is 100-150 ℃;
(2.2) crosslinking: after the insulating layer is extruded, carrying out irradiation crosslinking to melt the inner insulating material and the outer insulating material into a whole; an AB-2.5MeV high-frequency high-voltage electron accelerator is adopted to complete an insulating layer irradiation crosslinking process, the high voltage is 2.5MeV, the total flow is 25mA, the beam current is 14mA, the corresponding speed is 20-30, the linear speed is 30-50 m/min, and large-beam downward wiring is adopted;
(3) cabling and filling: the cable cores are cabled in the right direction, the gaps are filled with water-blocking yarns to be round, meanwhile, water-blocking tapes are wrapped outside the cable cores, and the width of the water-blocking tapes is 20% -30% of that of the tapes;
(4) waterproof jacket layer: the water-blocking tape is longitudinally coated by an aluminum-plastic composite tape, and the aluminum-plastic composite tape is tightly extruded with an environment-friendly high-density polyethylene sheath and is fixedly connected with the aluminum-plastic composite tape layer into a whole; the lapping cover of the aluminum-plastic composite belt longitudinal wrap is 20-30% of the width of the belt material, and is firmly welded by hot air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010258702.5A CN111341491A (en) | 2020-04-03 | 2020-04-03 | Waterproof environment-friendly cable with long service life and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010258702.5A CN111341491A (en) | 2020-04-03 | 2020-04-03 | Waterproof environment-friendly cable with long service life and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192706A (en) * | 2021-04-25 | 2021-07-30 | 华远高科电缆有限公司 | Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable |
| CN114446518A (en) * | 2022-02-08 | 2022-05-06 | 重庆智荟数创科技有限公司 | Multi-core branch cable and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310893A (en) * | 2013-06-27 | 2013-09-18 | 山东华凌电缆有限公司 | High-performance cable for construction |
| CN103337288A (en) * | 2013-06-03 | 2013-10-02 | 安徽润佳电缆集团股份有限公司 | Watertight control cable |
| CN110335705A (en) * | 2019-08-20 | 2019-10-15 | 兰州众邦电线电缆集团有限公司 | A kind of waterproof, rat-and-ant proof, the agricultural underground line of twin-core separated type |
| CN212010403U (en) * | 2020-04-03 | 2020-11-24 | 兰州众邦电线电缆集团有限公司 | Long-life, waterproof, environment-friendly cable |
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| CN103337288A (en) * | 2013-06-03 | 2013-10-02 | 安徽润佳电缆集团股份有限公司 | Watertight control cable |
| CN103310893A (en) * | 2013-06-27 | 2013-09-18 | 山东华凌电缆有限公司 | High-performance cable for construction |
| CN110335705A (en) * | 2019-08-20 | 2019-10-15 | 兰州众邦电线电缆集团有限公司 | A kind of waterproof, rat-and-ant proof, the agricultural underground line of twin-core separated type |
| CN212010403U (en) * | 2020-04-03 | 2020-11-24 | 兰州众邦电线电缆集团有限公司 | Long-life, waterproof, environment-friendly cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113192706A (en) * | 2021-04-25 | 2021-07-30 | 华远高科电缆有限公司 | Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable |
| CN114446518A (en) * | 2022-02-08 | 2022-05-06 | 重庆智荟数创科技有限公司 | Multi-core branch cable and preparation method thereof |
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