Production equipment for composite smooth aluminum sleeve multilayer co-extrusion cable

Abstract

The invention discloses production equipment for a composite smooth aluminum sleeve multi-layer co-extrusion cable. The production equipment comprises an aluminum strip coating device, an aluminum strip welding device, an aluminum sleeve drawing device, a multi-layer co-extrusion device and a cooling water tank. The aluminum strip coating device is used for coating an aluminum strip outside a cable core; and the aluminum strip welding device is used for welding the aluminum strip and forming an aluminum sleeve. The multi-layer co-extrusion device comprises a multi-layer co-extrusion machine head, a hot melt adhesive extruder, an outer sheath extruder and an outer conductive layer extruder, wherein the hot melt adhesive extruder, the outer sheath extruder and the outer conductive layer extruder extrude hot melt adhesives, outer sheath melts and outer conductive layer melts and convey the hot melt adhesives, the outer sheath melts and the outer conductive layer melts to the multi-layer co-extrusion machine head respectively; and the multi-layer co-extrusion machine head composites the aluminum sleeve, the hot melt adhesives, an outer sheath and an outer conductive layer together andperforms cooling molding through a cooling water tank. The three-layer co-extrusion technology is adopted, the extruded hot melt adhesive is uniform in thickness, the smooth aluminum sleeve, the outersheath and the conductive layer are tightly integrated, and the cable quality is ensured.

Description

technical field [0001] The invention relates to high-voltage cable production technology. Background technique [0002] In the existing corrugated aluminum-sheathed high-voltage cables, during the rolling process of the corrugated aluminum sheath, there is a certain gap between the aluminum sheath and the buffer layer, and the size of the gap is controlled according to the process. [0003] According to the existing corrugated aluminum sheath high-voltage cable process control regulations, the gap between the aluminum sheath and the buffer zone is 0.5-1.0mm. In the production process, the buffer layer is in indirect contact with the cable outer shield and the corrugated aluminum sleeve, which belongs to point contact. The shallower the corrugation of the aluminum sleeve, the poorer the contact. The structure of the semi-conductive buffer layer is composed of a layer of semi-conductive non-woven fabric and a layer of semi-conductive fluffy cotton with a thickness of about 1...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a composite smooth aluminum-sheathed multi-layer co-extruded cable production equipment, which solves the problem of hot-melt adhesive coating in the high-voltage cables produced by wrinkled or flat aluminum-sheathed high-voltage cable equipment and processes in the prior art. Not uniform enough, prone to bowing or wrinkling

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