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Water resistant high-voltage cable and production method thereof

A technology of high-voltage cables and manufacturing methods, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of limited water-blocking effect and limited water-blocking powder attachment, achieve the best water-blocking effect, and the manufacturing process is easy and improved. efficiency effect

Active Publication Date: 2012-07-18
广州岭南电缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a water-blocking high-voltage cable, which can solve the problems of limited water-blocking powder attachment and limited water-blocking effect caused by the mixed technology of water-blocking yarn and water-blocking powder used in existing water-blocking cables

Method used

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  • Water resistant high-voltage cable and production method thereof
  • Water resistant high-voltage cable and production method thereof
  • Water resistant high-voltage cable and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An embodiment of the present invention provides a water-blocking high-voltage cable, which includes a wire core and a wire core sleeve wrapping the wire core. The wire core includes a plurality of conductors, and a fragile water-blocking tape is wound on the conductors. The tape includes semi-conductive brittle non-woven fabric and water-blocking powder. The semi-conductive brittle non-woven fabric is wrapped with water-blocking powder. When the wire core is under pressure, the semi-conductive brittle non-woven fabric is broken, and the water-blocking powder fills the gap between conductors.

[0032] Specific as figure 1 As shown, the wire core is composed of a plurality of conductors 10, and the conductors 10 form an inner core 11, a secondary inner core 12, a secondary outer core 13 and an outer core 14 from the inside to the outside; the inner core 11, the secondary inner core 12, the secondary outer core Both the core 13 and the outer core 14 are wrapped with a frag...

Embodiment 2

[0036] like image 3 As shown, the wire core 1 is divided into a plurality of sector blocks 31 , belonging to a multi-core cable, and each sector block 31 includes multiple conductors 10 . Double-sided water-blocking and insulating crepe paper 32 is lined between every two fan-shaped blocks. The fan-shaped block 31 forms a central hole in the center of the wire core 1, and a plurality of water-blocking yarns 33 are added to the position of the central hole. For the conductor 10 in the fan-shaped block 31, the method in the above-mentioned embodiment 1 is still adopted, and the conductor 10 is wound with a fragile water-blocking tape. It can be understood that the arrangement of the conductors in the embodiment of the present invention does not need to be layered, so , There are many ways to wrap the conductor with the fragile water-blocking tape. You can use a fragile water-blocking tape to wrap only one conductor, or you can use a fragile water-blocking tape to wrap multiple...

Embodiment 3

[0039]An embodiment of the present invention provides a method for manufacturing a water-blocking high-voltage cable, including making a wire core and a wire core sleeve. When making the wire core, a fragile water-blocking tape is wound on the conductor, and the fragile water-blocking tape includes a semi-conductive Fragile non-woven fabric and water-blocking powder, semi-conductive fragile non-woven fabric wrapped with water-blocking powder.

[0040] Specifically, when winding a fragile water-blocking tape on a conductor, it is preferred to arrange multiple conductors closely from the inside to the outside to form a conductor layer with concentric circles, and to wind a fragile water-blocking tape on each layer of conductors.

[0041] As an improvement of the embodiment of the present invention, when winding the fragile water-blocking tape on the conductor, it is also possible to closely arrange multiple conductors to form an inner core, and wind the fragile water-blocking tap...

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PUM

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Abstract

The invention discloses a water resistant high-voltage cable and a production method thereof. The cable comprises a cable core and a cable core sleeve wrapped on the cable core. The cable core comprises a plurality of conductors. Fragile water resistant belts are wound on the conductors. Each fragile water resistant belt comprises semi-conducting fragile non-woven fabric and water resistant powder. The water resistant powder is wrapped in the semi-conducting fragile non-woven fabric. When the cable core is stressed, the semi-conducting fragile non-woven fabric is smashed, the water resistant powder fills gaps among the conductors. The production method of the water resistant high-voltage cable includes the steps of producing the cable core and the cable core sleeve. When the cable core is produced, the fragile water resistant belts are wound on the conductors, each fragile water resistant belt comprises the semi-conducting fragile non-woven fabric and the water resistant powder, and the water resistant powder is wrapped in the semi-conducting fragile non-woven fabric. The cable core of the water resistant high-voltage cable adopts the fragile water resistant belts, and the water resistant powder is wrapped in the semi-conducting fragile non-woven fabric and can be filled in the gaps among the conductors of the cable core so that the water resistant high-voltage cable achieves good powder adhesion effect and has optimal water resistant effect.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a water-blocking high-voltage cable and a manufacturing method thereof. Background technique [0002] At present, in the field of medium and low voltage cables, there are two water blocking methods for existing cable structures: one is static water blocking, and the other is dynamic water blocking. Static water-blocking is generally filled with some water-repellent compounds to prevent water from infiltrating in a static and passive form. There are some small air gaps between the outer sheath or the wire core, the water blocking effect is not ideal, and the cable production cost is high, the weight is heavy, and the process is complicated. The material used in the dynamic water-blocking structure is a polymer compound that can rapidly expand several times or even dozens of times its own volume when it encounters water. This polymer compound is filled in the gaps between conducto...

Claims

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Application Information

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IPC IPC(8): H01B7/282H01B7/288H01B13/26
CPCY02A30/14
Inventor 张博邓声华刘和平陈翠柳
Owner 广州岭南电缆股份有限公司
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