CN202615889U

CN202615889U - Waterproof crosslinked polyethylene insulated power cable

Info

Publication number: CN202615889U
Application number: CN 201220157093
Authority: CN
Inventors: 谢太阶; 束玲
Original assignee: Anhui Xinke Cable Group Co Ltd
Current assignee: Anhui Xinke Cable Group Co Ltd
Priority date: 2011-12-29
Filing date: 2012-04-16
Publication date: 2012-12-19
Anticipated expiration: 2022-04-16

Abstract

The utility model discloses a waterproof crosslinked polyethylene insulated power cable, which comprises a polyvinyl chloride outer sheath layer. A water-resisting insulated wire core, a filling layer, a water-resisting wrapping layer, a polyethylene isolating layer and a steel wire armor layer are sequentially arranged inside the polyvinyl chloride outer sheath layer, wherein the structure of the water-resisting insulated wire core comprises a conductor, a conductor shielding layer, an insulating layer, an insulated shielding layer, a water-resisting layer, a metal sparse-winding shielding layer, a waterproof layer and an outer sheath layer; the water-resisting wrapping layer is formed by winding a wrapping belt on peripheries of the water-resisting insulated wire core and the filling layer; the number of the water-resisting wire core can be one or more; the steel wire armor layer is formed by armoring a steel wire outside the polyethylene isolating layer; the polyvinyl chloride outer sheath layer is formed by extruding a polyvinyl chloride outer sheath outside the steel wire armor layer; and the conductor shielding layer and the insulated shielding layer are made of a semi-conducting material. The waterproof crosslinked polyethylene insulated power cable has a good water-resisting function, thereby effectively improving the operational reliability of the cable.

Description

The waterproof power cable with cross-linked polyethylene insulation

Technical field

The utility model relates to a kind of power cable with cross-linked polyethylene insulation, waterproof power cable with cross-linked polyethylene insulation that especially can waterproof.

Background technology

China territory is vast, and the weather and the geographical environment of various places differ greatly, often need be in the environment of moist or many water cable laying; At cable laying and run duration; Mechanical stress or external force also can cause cable cover(ing) and insulation harm and joint to damage, and cable shines the defective in the process, cable joint place in the system of production; All possibly get into moisture and influence the insulation property of cable, thus the useful life of reducing cable.

Summary of the invention

The problem that the utility model will solve provides a kind of power cable of ability waterproof, can effectively stop the infiltration of moisture content, thereby improve the cable reliability of operation effectively the useful life of having improved cable.

In order to address the above problem, the utility model is realized through following technical scheme.

The utility model waterproof power cable with cross-linked polyethylene insulation comprises the polyvinyl chloride external sheath layer, the insulated wire cores that in the polyvinyl chloride external sheath layer, blocks water successively, packed layer, the lapping layer that blocks water, polyethylene isolation layer and wire armoring layer.

The further improvement of the utility model is: the insulated wire cores that blocks water and packed layer twisting stranding, the peripheral coiling twining package tape of the insulated wire cores that blocks water and packed layer forms the lapping layer that blocks water, wrapped polyethylene isolation layer outside the lapping layer that blocks water.

The further improvement of the utility model is: at the armoured steel wire of polyethylene isolation layer, form the wire armoring layer, outside the wire armoring layer, extrude the polyvinyl chloride oversheath, form the polyvinyl chloride external sheath layer.

The further improvement of the utility model is: the insulated wire cores that blocks water has comprised conductor, conductor shield, and insulating barrier, insulation screen, water blocking layer, metal are dredged around screen, watertight composition and external sheath layer.

The further improvement of the utility model is: insulating barrier is that cross-linking polyethylene materials is made.

The further improvement of the utility model is: conductor shield, insulation screen is made by semiconductive material.

The further improvement of the utility model is: the insulated wire cores that blocks water can be one, also can be many.

Compared with prior art, the utility model has guaranteed the effective prevention of cable to water from structure, thereby has improved the cable reliability of operation effectively the useful life of having improved cable.

Description of drawings

As shown in the figure: Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of the single insulated wire cores that blocks water among Fig. 1.

Mark among the figure: 1-conductor, 2-conductor shield, 3-insulating barrier, 4-insulation screen, 5-water blocking layer; The 6-metal is dredged around screen, 7-watertight composition, 8-external sheath layer, the 9-insulated wire cores that blocks water; 10-packed layer, the 11-lapping layer that blocks water, 12-polyethylene isolation layer, 13-wire armoring layer.

Embodiment

In order to deepen understanding to the utility model, will combine embodiment and accompanying drawing that the utility model is done below and further describe, this embodiment only is used to explain the utility model, the utility model protection range is not constituted to limit.

Like Fig. 1, shown in Figure 2, the utility model waterproof power cable with cross-linked polyethylene insulation comprises polyvinyl chloride external sheath layer 14, is provided with the insulated wire cores 9 that blocks water successively in the inside of said polyvinyl chloride external sheath layer 14; Packed layer 10, the lapping layer 11 that blocks water, polyethylene isolation layer 12 and wire armoring layer 13, the said structure that blocks water insulated wire cores 9 has comprised conductor 1; Conductor shield 2, insulating barrier 3, insulation screen 4; Water blocking layer 5, metal are dredged around screen 6, watertight composition 7 and external sheath layer 8.The said lapping layer 11 that blocks water is behind block water insulated wire cores 9 and packed layer 10 twisting strandings; The insulated wire cores that blocks water 9 forms with the peripheral coiling twining package tape of packed layer 10, and the said insulated wire cores 9 that blocks water can be one, also can be many; Said wire armoring layer 13 is at polyethylene isolation layer 12 armoured steel wires; Form wire armoring layer 13, outside wire armoring layer 13, extrude the polyvinyl chloride oversheath, form polyvinyl chloride external sheath layer 14; Said conductor shield 2, insulation screen 4 is made by semiconductive material.

The utility model has been realized water stop function through said structure, thereby has improved the useful life of cable, has improved the cable reliability of operation effectively.

Claims

1. waterproof power cable with cross-linked polyethylene insulation; Comprise polyvinyl chloride external sheath layer (14); It is characterized in that: in polyvinyl chloride external sheath layer (14), be provided with the insulated wire cores that blocks water (9) from inside to outside successively, packed layer (10), the lapping layer that blocks water (11); Polyethylene isolation layer (12), wire armoring layer (13).

2. waterproof power cable with cross-linked polyethylene insulation according to claim 1; It is characterized in that: insulated wire cores that blocks water (9) and packed layer (10) twisting stranding wire; At its peripheral coiling twining package tape; The formation lapping layer (11) that blocks water, wrapped polyethylene isolation layer (12) outside the lapping layer that blocks water (11).

3. waterproof power cable with cross-linked polyethylene insulation according to claim 1; It is characterized in that: at the armoured steel wire of said polyethylene isolation layer (12); Form said wire armoring layer (13); Outside said wire armoring layer (13), extrude the polyvinyl chloride oversheath, form said polyvinyl chloride external sheath layer (14).

4. waterproof power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: the structure of the insulated wire cores that blocks water (9) comprises conductor (1) from inside to outside successively; Conductor shield (2); Insulating barrier (3) insulation screen (4), water blocking layer (5), metal are dredged around screen (6); Watertight composition (7), and external sheath layer (8).

5. waterproof power cable with cross-linked polyethylene insulation according to claim 4 is characterized in that: said conductor shield (2), insulation screen (4) is made by semiconductive material.

6. waterproof power cable with cross-linked polyethylene insulation according to claim 4 is characterized in that: insulating barrier (3) is made for cross-linking polyethylene materials.

7. waterproof power cable with cross-linked polyethylene insulation according to claim 1 is characterized in that: the said insulated wire cores that blocks water (9) can be one, also can be many.