CN219349861U

CN219349861U - Rated voltage 6kV to 35kV medium-voltage power environment-friendly fireproof waterproof cable

Info

Publication number: CN219349861U
Application number: CN202220466349.4U
Authority: CN
Inventors: 陈建义; 陈伟; 彭旺全; 迟先吉; 常尚国; 程旭阳; 冯政浩
Original assignee: SHANGHAI PUDONG WIRE AND CABLE (GROUP) CO Ltd
Current assignee: SHANGHAI PUDONG WIRE AND CABLE (GROUP) CO Ltd
Priority date: 2021-12-31
Filing date: 2022-03-04
Publication date: 2023-07-14
Anticipated expiration: 2032-03-04

Abstract

The utility model relates to the technical field of cables, in particular to an environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV for medium-voltage power, which comprises an insulating wire core, a shielding waterproof wire core, a metal shielding wire core, a waterproof wire core, a comprehensive waterproof wire core, a flame retardant wire core and an outer sheath. The insulated wire core is composed of a conductor, a conductor shield, an insulating layer and an insulating shield, wherein the conductor shield, the insulating layer and the insulating shield are coated outside the conductor, a circle of shielding waterproof layer is coated outside the insulated wire core to form a shielding waterproof wire core, a circle of metal shielding layer is coated outside the shielding waterproof wire core to form a metal shielding wire core, a layer of waterproof layer is coated outside the metal shielding wire core to form a waterproof wire core, a layer of metal composite belt and a waterproof sheath bracket are coated outside the waterproof wire core to form a comprehensive waterproof wire core, and the comprehensive waterproof wire core and a fire insulation layer coated on the conductor form a fire insulation wire core. The power cable has the advantages of excellent fireproof performance, good waterproof effect, safety, environmental protection and simple manufacture.

Description

Rated voltage 6kV to 35kV medium-voltage power environment-friendly fireproof waterproof cable

Technical Field

The utility model relates to the technical field of cables, in particular to an environment-friendly fireproof waterproof cable for medium-voltage power with rated voltage of 6kV to 35 kV.

Background

In recent years, the proportion of electric fires caused by short circuits, overload, excessive contact resistance, and the like is highest among major fires in the whole country, and there is a tendency to rise. In fact, flame and heat are not the only killers, and in certain space, toxic black smoke can cause visual dead zones and poison people, so that people cannot quickly find escape exits to suffocate. And simultaneously brings great difficulty to the rescue of firefighters. Therefore, in places where the people flow is dense, such as modern high-rise buildings, subways and the like, the prevention of fire casualties and the like becomes the first major matters of large cities. When a fire disaster occurs, the power supply is not cut off, the purpose of safety is achieved, the general power cable has poor fireproof performance for the distribution line, and the cable is easy to burn out when the fire disaster occurs, so that irrecoverable loss is caused.

When the cable is laid under water, the common power cable is poor in waterproof function in a frequently immersed or moist place, and conductors in the cable are damaged after the cable is immersed in water, so that the service life of the power cable is greatly reduced in a moist immersed environment, and the power cable cannot stably run for a long time.

Disclosure of Invention

Based on the above, it is necessary to provide an environment-friendly fireproof and waterproof cable with high fire resistance and waterproof performance and rated voltage of 6kV to 35kV for medium-voltage power.

The medium-voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV comprises an insulating wire core, a shielding waterproof wire core, a metal shielding wire core, a waterproof wire core, a comprehensive waterproof wire core, a flame-retardant wire core and an outer sheath, wherein the insulating wire core comprises a conductor, and a conductor shielding, an insulating layer and an insulating shielding which are sequentially coated outside the conductor; the shielding waterproof wire core comprises an insulating wire core and a waterproof layer coated outside the insulating wire core; the metal shielding wire core comprises a shielding waterproof wire core and a metal shielding layer coated outside the shielding waterproof wire core; the waterproof wire core comprises a metal shielding wire core and a waterproof layer coated outside the metal shielding wire core; the comprehensive waterproof wire core comprises a waterproof wire core, a metal composite belt and a waterproof sheath bracket, wherein the metal composite belt and the waterproof sheath bracket are coated outside the waterproof wire core; the fire-proof wire core comprises a comprehensive waterproof wire core and a fire-proof layer coated on the conductor; the outer sheath is coated on the outer part of the flame-retardant wire core.

Further, the raw materials adopted by the conductor are copper, aluminum or aluminum alloy materials; the raw material adopted by the conductor shield is peroxide crosslinking type semiconductive shielding material for the conductor; the raw material adopted by the insulating layer is peroxide crosslinked polyethylene insulating material; the raw materials adopted for the insulating shield are peroxide crosslinking type semiconductive shielding material for insulation and peroxide crosslinking type strippable semiconductive shielding material for insulation.

Furthermore, the shielding waterproof layer adopts a semi-conductive double-sided water blocking tape as a raw material.

Furthermore, the raw material adopted by the metal shielding layer is copper strips.

Furthermore, the waterproof layer adopts the raw materials of a double-sided water-blocking tape and a heightened flame-retardant belting.

Further, the metal composite belt adopts the raw materials of an aluminum-plastic composite belt and a copper-plastic composite belt.

Furthermore, the waterproof sheath bracket adopts polyolefin materials as raw materials.

Furthermore, the raw material adopted by the fire-proof layer is ceramic polymer composite refractory silicon rubber material.

Furthermore, the raw material adopted by the outer sheath is low-smoke halogen-free polyolefin material.

Furthermore, the raw materials are all environment-friendly materials.

Above-mentioned rated voltage 6kV to 35kV medium voltage power environmental protection fire prevention waterproof cable, the conductor outsourcing has conductor shielding, insulating layer and insulating shielding, can effectively avoid the conductor to contact with external environment. The insulating wire core is externally coated with a plurality of waterproof layers and shielding layers, and is further coated with a fire insulating layer and an outer sheath, and the conductor is protected layer by layer, so that the power cable can still be stably used in the environment of damp soaking and fire, has excellent fireproof performance, and is good in waterproof effect, safe, environment-friendly and simple to manufacture.

Drawings

The drawing is a schematic cross-sectional view of an environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV for medium-voltage power in one embodiment.

In the figure: 100. a conductor; 110. a conductor shield; 120. an insulating layer; 130. an insulating shield; 200. shielding a waterproof layer; 300. a metal shielding layer; 400. a waterproof layer; 500. a metal composite tape; 510. a waterproof sheath bracket; 600. a fire barrier; 700. an outer sheath.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown, in one embodiment, an environmentally friendly fire-resistant waterproof cable for medium voltage power rated at 6kV to 35kV is structured to include an insulated wire core, a shielded waterproof wire core, a metallic shielded wire core, a waterproof wire core, an integrated waterproof wire core, a flame retardant wire core, and an outer jacket 700.

In this embodiment, the insulated wire core includes a conductor 100, a conductor shield 110, an insulating layer 120 and an insulating shield 130 sequentially coated outside the conductor 100. The conductor 100 is formed by twisting a plurality of monofilaments, and the raw material used is copper, aluminum or aluminum alloy material. The conductor 100 adopts a "T" configuration with almost zero gaps between filaments. The raw materials adopted by the conductor shield 110 are peroxide crosslinked semiconductive shield materials for conductors, the raw materials of the insulating layer 120 are peroxide crosslinked polyethylene insulating materials, the raw materials adopted by the insulating shield 130 are peroxide crosslinked semiconductive shield materials for insulation and peroxide crosslinked strippable semiconductive shield materials for insulation, the conductor shield 110, the insulating layer 120 and the insulating shield 130 are produced by adopting extrusion dies, and the used equipment is a medium-voltage catenary production line.

In this embodiment, the metal waterproof wire core includes an insulating wire core and a shielding waterproof layer 200 coated outside the insulating wire core, and the raw material used for the shielding waterproof layer 200 is a semiconductive double-sided waterproof tape. The semiconductive double-sided tape is wrapped in an overlapping manner to ensure that the outer surface of the insulating layer 120 is dry when viewed with the naked eye after removing the composite layer outside the insulating layer 120 after the cable is immersed in water for 72 hours.

In this embodiment, the metal shielding wire core is composed of a shielding waterproof wire core and a metal shielding layer 300 wrapped outside the shielding waterproof wire core, and the raw material used for the metal shielding layer 300 is copper tape. The copper strips are wrapped in an overlapped mode.

In this embodiment, the waterproof wire core is composed of a metal shielding wire core and a waterproof layer 400 wrapped outside the metal shielding wire core, and raw materials used for the waterproof layer 400 are double-sided waterproof tapes and heightened flame-retardant tape. When the high-flame-retardant wrapping tape is burnt, the wrapping tape is decomposed into metal oxide and crystal water is separated out, the metal oxide is decomposed to form a net structure, the high-flame-retardant wrapping tape has a certain adsorption effect on smoke, and the separated crystal water has an obvious sedimentation effect on smoke particles and has a good heat absorption effect. Furthermore, charred structures can be formed during the combustion process.

In this embodiment, the composite waterproof core is composed of a waterproof core, a metal composite tape 500 longitudinally wrapped outside the waterproof core, and an extruded waterproof sheath holder 510. The metal composite belt 500 adopts the raw materials of an aluminum plastic composite belt and a copper plastic composite belt. The waterproof jacket bracket 510 is made of polyolefin material. The metal composite belt 500 is longitudinally wrapped, the waterproof sheath bracket 510 is extruded, and the same process is continuously completed to ensure that the metal composite belt and the waterproof sheath bracket are adhered, so that the waterproof requirement is met, and water vapor or water is prevented from contacting the inner-layer wire core.

In this embodiment, the fire-proof wire core is composed of a comprehensive waterproof wire core and a fire-proof layer 600 coated on the conductor 100, and the raw material used for the fire-proof layer 600 is ceramic polymer composite fire-proof silicon rubber material. The ceramic polymer composite refractory silicon rubber is produced by adopting an extrusion die. The fire-proof layer 600 ensures that the cable is heated for 180min at the fire-proof temperature of 950-1000 ℃ and the circuit is kept completely electrified after being cooled for 15 min; the cable is heated for 120min at the temperature of 950-1000 ℃ and after water spraying and continuous heating for 15min, the circuit is kept completely electrified; after the fire-resistant temperature of the cable reaches (950-1000) DEG C and the cable is subjected to fire and mechanical vibration for 120min, the circuit is kept completely electrified, and the cable can cope with the conditions of water spraying, mechanical vibration and the like.

In this embodiment, the outer sheath 700 is coated outside the fire-retardant wire core, and the raw material used for the outer sheath 700 is low-smoke halogen-free polyolefin material. The extruder is set to a temperature suitable for the raw materials, and is produced by a semi-extrusion pipe type or extrusion type die, so that the outer sheath 700 can be obtained, and the outer sheath 700 is tightly contacted with the fire-resistant layer 600, so that no gap exists.

Above-mentioned rated voltage 6kV to 35kV medium voltage power environmental protection fire prevention waterproof cable, all raw and other materials that mention are environmental protection material, and conductor 100 cladding has conductor shielding 110, insulating layer 120 and insulating shielding 130 outward, can effectively protect conductor 100 from damage. The insulating wire core is externally coated with a plurality of waterproof layers and shielding layers, and is further coated with a fire insulating layer 600 and an outer sheath 700, and the conductor 100 is protected layer by layer, so that the power cable can still be stably used in the environment of damp soaking and fire, has excellent fireproof performance, good waterproof effect, safety and environmental protection and simple manufacture.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The medium-voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV is characterized by comprising an insulating wire core, a shielding waterproof wire core, a metal shielding wire core, a waterproof wire core, a comprehensive waterproof wire core, a fire-proof wire core and an outer sheath, wherein the insulating wire core comprises a conductor, and a conductor shielding, an insulating layer and an insulating shielding which are sequentially coated outside the conductor; the shielding waterproof wire core comprises an insulating wire core and a waterproof layer coated outside the insulating wire core; the metal shielding wire core comprises a shielding waterproof wire core and a metal shielding layer coated outside the shielding waterproof wire core; the waterproof wire core comprises a metal shielding wire core and a waterproof layer coated outside the metal shielding wire core; the comprehensive waterproof wire core comprises a waterproof wire core, a metal composite belt and a waterproof sheath bracket, wherein the metal composite belt and the waterproof sheath bracket are coated outside the waterproof wire core; the fire-proof wire core comprises a comprehensive waterproof wire core and a fire-proof layer coated on the conductor; the outer sheath is coated outside the fire-proof wire core.

2. The medium voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV according to claim 1, wherein the raw material adopted by the conductor is copper, aluminum or aluminum alloy material; the raw material adopted by the conductor shield is peroxide crosslinking type semiconductive shielding material for the conductor; the raw material adopted by the insulating layer is peroxide crosslinked polyethylene insulating material.

3. The medium voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV according to claim 1, wherein the raw material adopted by the metal shielding layer is copper strips.

4. The medium voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV according to claim 1, wherein the waterproof sheath bracket is made of polyolefin materials.

5. The medium voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV according to claim 1, wherein the fire-resistant layer is made of ceramic polymer composite fireproof silicon rubber material.

6. The medium voltage power environment-friendly fireproof waterproof cable with rated voltage of 6kV to 35kV according to claim 1, wherein the raw material adopted by the outer sheath is low smoke halogen-free polyolefin material.