66-500kv crosslinked cable short-degassing online treatment process
A cross-linked cable and processing technology, which is applied in the direction of electrical components, cable/conductor manufacturing, conductor/cable insulation, etc., can solve the problem of incomplete removal of by-products inside the insulation, aging of insulating cores, and degassing time Long and other problems, to achieve the effect of shortening the production cycle, shortening the degassing time, and fast degassing rate
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Embodiment 1
[0026] A 66-500kV cross-linked cable short degassing online treatment process, the process includes: conductor→three-layer co-extruded insulation and online degassing→drying room degassing. The following takes the rated voltage 110kV cable as an example:
[0027] Three-layer co-extrusion insulation and on-line degassing steps are as follows: three-layer co-extrusion of conductor shielding layer + insulating layer + insulating shielding layer → cross-linking (under the protection of nitrogen atmosphere, the nitrogen concentration of nitrogen atmosphere is controlled above 98%, nitrogen gas The temperature is controlled at 340°C, the temperature of the conductor is controlled at 150°C, and the frequency of exhaust gas during the cross-linking process is once every 20 minutes, each 2s) → cooling (under the protection of nitrogen atmosphere, the nitrogen concentration of the nitrogen atmosphere is controlled above 98%) , cooled to 40°C) → secondary heating (under the protection of...
Embodiment 2
[0031] A 66-500kV cross-linked cable short degassing online treatment process, the process includes: conductor→three-layer co-extruded insulation and online degassing→drying room degassing. The following takes the rated voltage 220kV cable as an example:
[0032] Three-layer co-extrusion insulation and on-line degassing steps are as follows: three-layer co-extrusion of conductor shielding layer + insulating layer + insulating shielding layer → cross-linking (under the protection of nitrogen atmosphere, the nitrogen concentration of nitrogen atmosphere is controlled above 98%, nitrogen gas The temperature is controlled at 340°C, the temperature of the conductor is controlled at 150°C, and the frequency of exhaust gas during the cross-linking process is once every 20 minutes, each 2s) → cooling (under the protection of nitrogen atmosphere, the nitrogen concentration of the nitrogen atmosphere is controlled above 98%) , cooled to 40°C) → secondary heating (under the protection of...
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