Production method of 8.7/10kV and below mining monitor rubber jacketed flexible cable

Abstract

The invention provides a cabtyre cable with 8.7 / 10kV and lower voltage and a monitoring conductor for mining application, and a production method thereof. The cable improves the service capacity of underground coal mining equipment, and the cable has excellent dielectric property and reliable and stable performance. The invention further provides the production method of the cable; the method hasadvanced technology, enhances and improves insulating property and physical properties of the cable, and adapts to the operating requirements of high voltage mobile cabtyre cables. The cable comprises a power core conductor (1), an internal shielding layer (2), an insulating layer (3), an external shielding layer (4), a braided copper shielding layer (5), an inner sheath (6), a pilot core as wellas a semi-conductive wrapping layer and an outer sheath (8), and the insulating layer (3) is a high pressure resistant ethylene propylene rubber insulating layer. In the production method, a three-layer single extrusion continuous sulfurization process technology is adopted to produce the master core, which ensures the voltage withstand level of the whole cable and partial discharge level.

Description

technical field [0001] The invention relates to a monitoring rubber-sheathed flexible cable of 8.7 / 10kV and below and a production method thereof, mainly including two types of 8.7 / 10kV and 6 / 10kV, mainly suitable for underground use in coal mines with rated voltages of 6 / 10kV and 8.7 / 10kV Power cords for portable transformers and similar equipment. Background technique [0002] With the development of the coal industry, the replacement speed of underground coal mining equipment is accelerating, and the power consumption capacity of coal mining equipment is constantly increasing. At present, the underground 3.6 / 6KV mobile transformers and cables for similar equipment included in the coal industry MT818-1999 standard and GB12972-91 national standard cannot meet the needs of new coal mine development, and the voltage level of underground transformers has risen to 6 / 10kV, 8.7 / 10kV is urgent. At present, there are no industry and national standards for 6 / 10kV and 8.7 / 10kV cab...

AI Technical Summary

Problems solved by technology

The underground 3.6 / 6KV mobile transformers and cables for similar equipment contained in the current coal industry MT818-1999 standard and GB12972-91 national standard cannot meet the needs of new coal mine development, and the voltage level of underground transformers has risen to 6 / 10kV, 8.7 / 10kV is urgent

At present, there are no industry and national standards for 6 / 10kV and 8.7 / 10kV cables in China, and there is no supporting industry for mass production

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