CN211529639U

CN211529639U - Mineral insulation corrugated copper sheath cable

Info

Publication number: CN211529639U
Application number: CN201922261351.9U
Authority: CN
Inventors: 杨建红; 张佳亮; 叶小军; 孙冬营; 赵家浪; 周光亚
Original assignee: Hua Yuan High Techs Cable Co ltd
Current assignee: Hua Yuan High Techs Cable Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-09-18
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a mineral insulation ripple copper sheathing cable, including copper conductor and copper sheathing, be fixed on the copper conductor around having the insulating layer, the insulating layer includes mineral basalt and glass fiber composite material layer, the fixed cladding has low smoke and zero halogen fire-retardant polyolefin to protect the oversheath on the copper sheathing. The utility model has the advantages that the fireproof, flame-retardant and explosion-proof insulating performance of the cable is good through the mineral basalt layer and glass fiber composite material layer and the copper sheath, the fireproof and flame-retardant performance of the cable is enhanced through the cooperation of the inorganic silicon expansion material layer and the flame-retardant belt protective layer, the heat-insulating performance is good, and therefore the structure of the cable core is more stable under the high-temperature condition, and the reliable electrical performance of the cable is ensured; and make the cable compressive capacity strong, the crooked flexible ability is superior through making the copper sheathing into the bellows shape, and structural strength is high to the restriction of realization to fireproof cable length and specification, preparation process is simple, and production efficiency is high.

Description

Mineral insulation corrugated copper sheath cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to mineral insulation ripple copper sheathing cable.

Background

When a fire disaster occurs, because the traditional cable adopts non-fireproof materials to cause the circuit abnormality of a power supply system, further cause the abnormal work of an elevator, an emergency system and the like, and bring great difficulty to subsequent rescue evacuation, the adoption of the fireproof cable is the key for ensuring the normal power supply of the power supply system in a fire disaster environment, corresponding fireproof and fireproof cables must be selected according to different purposes in a power supply and distribution line, and the traditional fireproof cable comprises a cable with a fireproof wrapping belt and plastic insulation combined structure and a cable with a copper core mineral insulation copper pipe sheath structure; the plastic has lower insulating ignition point, is easy to burn in open fire environment, is easy to cause rapid temperature rise due to heat generated during burning so as to carbonize a refractory wrapping tape, and has poor performances of mechanical vibration resistance, impact resistance, water drenching resistance and the like; the latter is because the hydrophilicity of magnesium oxide is stronger, lead to insulating and apt to be moist, make its longitudinal moisture-proof and sealing of joint department especially important, at present, the longitudinal moisture-proof (joint and terminal) mostly uses the sealant to seal, so make its life receive certain restriction, if the cable damages, meet water, it will lose the fire-proof function in the fire environment, and, its manufacturing process is complicated, the production cycle is longer, hard and not easy to bend, disadvantages such as inconvenient installation, etc., have limited cable manufacture length and output, if the cable length is too short, will lead to the joint to increase, make its longitudinal waterproof difficulty too big, therefore the present case has proposed a new kind of fire-proof cables.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mineral insulation ripple copper sheathing cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mineral insulation ripple copper sheathing cable, includes copper conductor and copper sheathing, it has the insulating layer to be fixed around the package on the copper conductor, the insulating layer includes mineral basalt layer and glass fiber composite material layer, it has inorganic silicon intumescent material layer to fill between insulating layer and the copper sheathing, it has fire-retardant area protective layer to be fixed around the package between inorganic silicon intumescent material layer and the copper sheathing, the last fixed cladding of copper sheathing has low smoke and zero halogen fire-retardant polyolefin to protect the oversheath.

Preferably, a gap between the copper conductor and the insulating layer is filled with a low-smoke halogen-free flame-retardant filling strip.

Preferably, the copper sheath is arranged in a bellows-like structure.

The utility model discloses a technological effect and advantage:

the utility model discloses a mineral basalt layer and glass fiber composite material layer and copper sheath for the cable is fire-resistant, fire-retardant and explosion-proof insulating properties is good, through the cooperation effect of inorganic silicon expanding material layer and fire-retardant area protective layer effect, has strengthened the fire prevention fire behavior of cable, and inorganic silicon expanding material layer can expand along with the rising of temperature, and then the inner space of copper sheath is filled, the position of fixed line cable core; meanwhile, the cable core has good heat insulation performance at high temperature, so that the structure of the cable core is more stable under the high-temperature condition, and the electrical performance of the cable is ensured to be reliable; and make the cable compressive capacity strong, the crooked flexible ability is superior through making the copper sheathing into the bellows shape, and structural strength is high to the restriction of realization to fireproof cable length and specification, preparation process is simple, and production efficiency is high.

Drawings

Fig. 1 is a schematic structural view of a mineral insulated corrugated copper sheathed cable according to the present invention;

fig. 2 is a schematic view of an insulating layer structure of a mineral insulated corrugated copper sheathed cable of the present invention.

In the figure: 1. a copper conductor; 101. a low-smoke halogen-free flame-retardant filler strip; 2. an insulating layer; 201. a mineral basalt layer; 202. a glass fiber composite layer; 3. a layer of inorganic silicon intumescent material; 4. a flame retardant tape protective layer; 5. a copper sheath; 6. the low-smoke halogen-free flame-retardant polyolefin protects the oversheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, a mineral insulation corrugated copper sheath cable is provided, which includes a copper conductor 1 and a copper sheath 5, wherein an insulation layer 2 is fixed on the copper conductor 1, the insulation layer 2 includes a mineral basalt layer 201 and a glass fiber composite material layer 202, an inorganic silicon expansion material layer 3 is filled between the insulation layer 2 and the copper sheath 5, a flame retardant tape protective layer 4 is fixed between the inorganic silicon expansion material layer 3 and the copper sheath 5, and a low-smoke halogen-free flame retardant polyolefin outer sheath 6 is fixed on the copper sheath 5.

The gap between the copper conductor 1 and the insulating layer 2 is filled with the low-smoke halogen-free flame-retardant filler strip 101, so that the flame-retardant effect is effectively enhanced.

Copper sheath 5 is the setting of bellows structure, has effectively strengthened structural strength.

And simultaneously, the utility model also discloses a manufacturing method of mineral insulation ripple copper sheath cable specifically includes following operating procedure:

s1: preparing a copper conductor 1, and tightly pressing and twisting the conductors to form the copper conductor 1 by adopting a wire drawing annealing production process and a continuous production process;

s2: using a lapping machine to lap and fasten the insulating layer 2 consisting of the mineral basalt layer 201 and the glass fiber composite material layer 202 on the copper conductor 1, and lapping three layers; the breakdown field strength of the insulating layer 2 is 50 kV/mm;

s3: filling the low-smoke halogen-free flame-retardant filler strip 101 into the gap between the insulating layer 2 and the copper conductor 1;

s4: wrapping the flame-retardant belt protective layer 4 on the insulating layer 2 in a winding way by using a wrapping machine;

s5: manufacturing a copper sheath 5 by adopting a non-magnetic metal strip longitudinally-wrapped argon arc welding embossing process, embossing the copper sheath in a corrugated shape, fixing and wrapping a flame-retardant belt protective layer 4 and a low-smoke halogen-free flame-retardant polyolefin protective sheath 6 on the inner wall and the outer wall of the copper sheath 5 by adopting the longitudinally-wrapped argon arc welding embossing process, performing a water immersion test on the cable after welding is completed, and detecting the insulating property of the cable;

s6: finally, the gaps between the insulating layers 2 are filled with a layer 3 of inorganic silicon intumescent material.

The utility model discloses a mineral basalt 201 and glass fiber composite material layer 202 and copper sheath 5 for the cable is fire-resistant, fire-retardant and explosion-proof insulating properties is good, through the cooperation of inorganic silicon expanding material layer 3 and the effect of fire-retardant band protective layer 4, has strengthened the fire-retardant fire behavior of cable, and inorganic silicon expanding material layer 3 can expand along with the rising of temperature, and then the inner space of copper sheath 5, the position of fixed line cable core is filled; meanwhile, the cable core has good heat insulation performance at high temperature, so that the structure of the cable core is more stable under the high-temperature condition, and the electrical performance of the cable is ensured to be reliable; and make the strong, crooked flexible ability of cable compressive capacity superior, structural strength is high through making copper sheathing 5 into the bellows shape to realize the restriction to fireproof cable length and specification, the preparation process is simple, and production efficiency is high.

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 modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A mineral insulation corrugated copper sheath cable, includes copper conductor (1) and copper sheath (5), its characterized in that: the insulating layer (2) is fixedly wound on the copper conductor (1), the insulating layer (2) comprises a mineral basalt layer (201) and a glass fiber composite material layer (202), an inorganic silicon expansion material layer (3) is filled between the insulating layer (2) and the copper sheath (5), a flame-retardant belt protective layer (4) is fixedly wound between the inorganic silicon expansion material layer (3) and the copper sheath (5), and a low-smoke halogen-free flame-retardant polyolefin protective sheath (6) is fixedly coated on the copper sheath (5).

2. The mineral insulated corrugated copper sheathed cable according to claim 1, characterized in that: and a gap between the copper conductor (1) and the insulating layer (2) is filled with a low-smoke halogen-free flame-retardant filler strip (101).

3. The mineral insulated corrugated copper sheathed cable according to claim 1, characterized in that: the copper sheath (5) is arranged in a corrugated pipe structure.