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Cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable

A cross-linked polyethylene, control cable technology, applied in insulated cables, insulated conductors, organic insulators, etc., can solve the problems of lack of cooling process, lack of feeding mechanism, poor overall extrusion quality, etc., to improve stirring efficiency, expand Scope of application, effect of improving stability

Inactive Publication Date: 2021-01-01
ANHUI HAINA CABLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing screw extrusion equipment cannot evenly stir the mixture before extrusion, so that the size of the extruded material is different, resulting in poor overall extrusion quality; the existing screw extrusion equipment often lacks feed The feeding mechanism is easy to cause the feeding speed is not stable enough, which affects the extrusion quality, and it is easy to form residue on the feeding mechanism during feeding, resulting in waste of cost; the existing screw extrusion equipment lacks the corresponding after extrusion. Cooling process, resulting in poor quality extrusion

Method used

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  • Cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable
  • Cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable
  • Cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable

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Effect test

Embodiment 1

[0049]A cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable, comprising a conductor, a fire-resistant mica layer, an insulating layer, a tape layer and a sheath layer. The conductor is wrapped with a fire-resistant mica layer, and the fire-resistant mica layer is wrapped with insulation The conductor, the fire-resistant mica layer and the insulating layer constitute an insulated wire core. Several insulated wire cores are twisted into a bundle to form a cable core. The outside of the cable core is wrapped with a tape layer, and the outside of the tape layer is wrapped with a sheath layer;

[0050]The conductor is composed of annealed copper wire, the refractory mica layer is wrapped by mica tape; the insulating layer is composed of cross-linked polyethylene, the wrapping layer is wrapped by alkali-free glass fiber tape, and the sheath layer is made of halogen-free resistance. Composition of burning polyolefin;

[0051]The cross-linked polyethylene inclu...

Embodiment 2

[0064]A cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable, comprising a conductor, a fire-resistant mica layer, an insulating layer, a tape layer and a sheath layer. The conductor is wrapped with a fire-resistant mica layer, and the fire-resistant mica layer is wrapped with insulation The conductor, the fire-resistant mica layer and the insulating layer constitute an insulated wire core. Several insulated wire cores are twisted into a bundle to form a cable core. The outside of the cable core is wrapped with a tape layer, and the outside of the tape layer is wrapped with a sheath layer;

[0065]The conductor is composed of annealed copper wire, the refractory mica layer is wrapped by mica tape; the insulating layer is composed of cross-linked polyethylene, the wrapping layer is wrapped by alkali-free glass fiber tape, and the sheath layer is made of halogen-free resistance. Composition of burning polyolefin;

[0066]The cross-linked polyethylene inclu...

Embodiment 3

[0079]A cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable, comprising a conductor, a fire-resistant mica layer, an insulating layer, a tape layer and a sheath layer. The conductor is wrapped with a fire-resistant mica layer, and the fire-resistant mica layer is wrapped with insulation The conductor, the fire-resistant mica layer and the insulating layer constitute an insulated wire core. Several insulated wire cores are twisted into a bundle to form a cable core. The outside of the cable core is wrapped with a tape layer, and the outside of the tape layer is wrapped with a sheath layer;

[0080]The conductor is composed of annealed copper wire, the refractory mica layer is wrapped by mica tape; the insulating layer is composed of cross-linked polyethylene, the wrapping layer is wrapped by alkali-free glass fiber tape, and the sheath layer is made of halogen-free resistance. Composition of burning polyolefin;

[0081]The cross-linked polyethylene inclu...

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Abstract

The invention discloses a cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable, which comprises conductors, fire-resistant mica layers, insulating layers, a beltinglayer and a sheath layer. The conductors are wrapped with the fire-resistant mica layers, the fire-resistant mica layers are wrapped with the insulating layers, and the conductors, the fire-resistantmica layers and the insulating layers form insulating wire cores; a plurality of insulating wire cores are mutually twisted into a bundle to form a cable core, the cable core is wrapped by a wrappingtape layer, and the wrapping tape layer is wrapped by a sheath layer. Each conductor is composed of annealed copper wires, and each fireproof mica layer is formed by wrapping a mica tape. The insulating layer is made of cross-linked polyethylene, the wrapping tape layer is formed by wrapping an alkali-free glass fiber tape, and the sheath layer is made of halogen-free flame-retardant polyolefin. By adopting the crosslinked polyethylene as the material of the insulating layer, the fire resistance of the cable can be greatly improved while the insulativity is ensured, so that the safety of the cable is improved, and the application range of the cable is expanded.

Description

Technical field[0001]The invention relates to the technical field of cable production, in particular to a cross-linked polyethylene insulated halogen-free low-smoke fire-resistant control cable.Background technique[0002]A cable is composed of a conductor, an insulating layer and a sheath layer. It is an electrical product used to transmit electric energy, transmit information, and realize electromagnetic energy conversion. Cables are widely used in power systems, coal mines, industrial and agricultural production, and people’s daily life. They can operate safely under certain working conditions, but when they are under fault conditions such as overload, short circuit, local overheating, and external heat, they will It causes the insulation resistance of the insulating material to drop, lose its insulating ability, and even burn, which in turn leads to fire and explosion accidents. In recent years, the scale of construction of coal mines, factories, buildings and equipment has increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/44H01B7/02H01B13/14
CPCH01B3/44H01B7/02H01B13/145H01B13/148
Inventor 任俊毕功仁王斌陶明刘传舵肖本志
Owner ANHUI HAINA CABLE GRP
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