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Cooling device and cooling method after extrusion of cross-linked cable polyethylene insulating sheath

A technology of polyethylene insulation and cross-linked cables, which is applied in the direction of conductor/cable insulation, cable/conductor manufacturing, circuits, etc. It can solve problems affecting the surface quality of cables and achieve the effect of increasing viscosity

Active Publication Date: 2017-07-21
ZHENGZHOU YIFANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing post-extrusion cooling device generally uses a cooling pool for cooling. The cable enters from one end of the cooling pool and leads out from the other end. The cooling pool uses circulating water to cool the cable. Because the cable may have air bubbles attached to the outer surface of its insulating sheath After entering the cooling pool, "pit bags" will be generated at the air bubbles. In addition, because the water is circulating, it is inevitable that some air will be brought into the cooling pool with the circulating water. After the air is attached to the surface of the insulating sheath It will also produce "pits", which affects the surface quality of the cable and needs to be improved

Method used

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  • Cooling device and cooling method after extrusion of cross-linked cable polyethylene insulating sheath
  • Cooling device and cooling method after extrusion of cross-linked cable polyethylene insulating sheath
  • Cooling device and cooling method after extrusion of cross-linked cable polyethylene insulating sheath

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Embodiment 1

[0024] Embodiment one: see Figure 1-7 , in the figure, a cross-linked cable polyethylene insulated sheath cooling device after extrusion, including a groove-shaped pool body, a water inlet structure is provided on the upper part of the pool, a water outlet structure is provided on the lower part of the pool, and a water outlet structure is provided between the water outlet structure and the water inlet structure. Water circulation power device, the two ends of the trough-shaped pool body are provided with plate-shaped soft silicone plugs, and the periphery of the soft silicone plugs is sealed and connected with the two ends of the pool body through "concave"-shaped pressure plates and bolts. The middle part of the soft silicone plugs There is a cable hole, and there is a vertical gap from the upper edge of the soft silicone plug. The lower part of the gap is connected with the cable hole. This structure can quickly and conveniently install the cable jacket into the cable hole,...

Embodiment 2

[0029] Embodiment 2: A method for cooling after extrusion of the cross-linked cable polyethylene insulating sheath carried out according to the device of Embodiment 1, comprising the following steps,

[0030] a. Add soap liquid to the circulating water, driven by the circulating power device, the circulating water goes up to the upper slow water inlet structure, slowly flows into the trough-shaped pool along its textile, and the circulating water in the pool flows again along the outlet structure into the cycle power plant,

[0031] b. Put the extruded cable with insulating sheath down into the cable hole along the gap of the soft silicone plug,

[0032] c. Then install the strip clips to clamp the connection structure formed by the convex strips and grooves at the gaps, so as to avoid a large amount of cooling water leaking from the gaps.

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Abstract

The invention relates to a cooling device and a cooling method after extrusion of a polyethylene insulating sheath of a cross-linked cable. There is a water circulation power device between them, and the feature is: the two ends of the trough-shaped pool body are provided with plate-shaped soft silica gel plugs, and the periphery of the soft silica gel plug is sealed and connected with the pool body, and the cross-linked cable polyethylene insulating sheath of the invention Cooling device and cooling method after extrusion, the place where the cable enters the cooling device is provided with a soft silicone plug, and the cable hole matches the diameter of the cable, which can remove the air carried by the cable surface, so as to prevent air bubbles from entering the cooling water with the cable. Avoid "pits" on the surface of the cable as a result.

Description

technical field [0001] The invention relates to the technical field of cross-linked cable insulating sheaths, in particular to a post-extrusion cooling device and cooling method for cross-linked cable polyethylene insulating sheaths. Background technique [0002] Polyethylene (PE) is a non-polar material with good electrical properties, but its molecular structure is linear, and it is easy to crack after being extruded into an insulating layer. Cross-linking technology is one of the main means of PE modification. Cross-linked PE can significantly improve its environmental stress resistance, service temperature and mechanical properties at high temperatures. As one of the PE crosslinking methods, silane crosslinking makes PE molecules form a C-Si-O-Si-C crosslinking network. It is currently used in low-voltage cable production for its simplicity, economy and superior performance. Admired by merchants. Since the extrusion temperature, extrusion speed and crosslinking speed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B13/14H01B13/24
CPCH01B13/00H01B13/0036H01B13/145H01B13/24
Inventor 侯金保吉志林郭天庆
Owner ZHENGZHOU YIFANG ELECTRIC
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