Production method and products of flexible cable for wind power generation

Abstract

The invention relates to the cable manufacturing field and discloses a production method and products of a flexible cable for wind power generation. The production method of the flexible cable for the wind power generation comprises working procedures of selecting materials, wire drawing, conductor stranding, insulating layer extruding, irradiation crosslinking machining, insulating layer sparks testing electric, insulating wire core cabling, filling and belting, outer sheath extruding and finished product inspection. The emphasis of processing steps is the irradiation crosslinking machining, the insulating layer sparks testing electric and the like. The irradiation crosslinking machining includes that an irradiation crosslinking technology of an electron accelerator is utilized to perform machining on an insulating wire core; the irradiation energy is 1.8 MeV, the beam current is from 8 mA - 10 mA, and the irradiation dose is controlled between 100 kGy to 120 kGy; and elongation of an ethylene-propylene elastomer under a thermal elongation test load is controlled between 80 to 120% after irradiation due to the fact that irradiation crosslinking enables the ethylene-propylene elastomer to be modified. Compared with material modification by utilizing the traditional continuous vulcanization technology, the production method of the flexible cable for the wind power generation has the advantages of saving raw materials, being environment friendly and saving the energy and the products of the flexible cable for the wind power generation have the advantages of not needing to arrange an isolated layer between a conductor and an insulating layer and being resistant to the low temperature and distortion.

Description

technical field [0001] The invention relates to the field of cable manufacturing, in particular to a method for manufacturing flexible cables for wind power generation and products thereof. Background technique [0002] Cables for wind power generation are suitable for wind power generators. Due to the particularity of their working environment, cables for wind power generation are required to have excellent cold resistance, high temperature resistance, twist resistance, oil immersion resistance, corrosion resistance, and crack resistance. [0003] The existing manufacturing methods of cables for wind power generation have the following deficiencies: since the insulating materials used in the cables are mainly silicone rubber and ethylene-propylene rubber, such materials must be modified by a continuous vulcanization process, and polysulfide compounds in the continuous vulcanization process Migration is achieved through chemical decomposition and compounding, which not o...

AI Technical Summary

Problems solved by technology

[0003] The existing manufacturing methods of cables for wind power generation have the following deficiencies: since the insulating materials used in the cables are mainly silicone rubber and ethylene-propylene rubber, such materials must be modified by a continuous vulcanization process, and polysulfide compounds in the continuous vulcanization process Migration is achieved through chemical decomposition and compounding, which not only changes the structure of the insulation and reduces its mechanical properties, but also reacts with the copper surface to form copper sulfide and cuprous sulfide, resulting in blackening of the copper wire, and in turn, copper sulfide and cuprous sulfide Accelerate the aging of the insulation, and lead to the stickiness of the insulation layer, so an isolation layer must be installed between the conductor and the insulation layer; when the continuous vulcanization process is used to modify the rubber material, a steam boiler is required, which has high energy consumption and serious pollution. Harmful to environmental protection and staff health

During the continuous vulcanization process, the equipment cannot be stopped. Once the vulcanization equipment is stopped due to power failure and other reasons, the cables being produced will be scrapped as a whole, and the production risk is high.

Silicone rubber and ethylene-propylene rubber materials must be extruded by a special extruder and then vulcanized by vulcanization equipment, which requires high equipment investment

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