Insulation production crosslinking equipment for power cable manufacturing

Abstract

The invention discloses insulation production crosslinking equipment for power cable manufacturing. The equipment comprises an extrusion unit, a steering mechanism and a winding unit, and is characterized in that the steering mechanism is located at a section between the extrusion unit and the winding unit, and the steering mechanism is divided into a first steering unit, a second steering unit and a third steering unit; an insulated power cable is arranged between the extrusion unit and the winding unit in a steering mode through the steering mechanism. According to the invention, a plurality of limiting anti-shaking devices arranged at the front, rear, left and right sides of a heating sleeve and a cooling sleeve move towards the center of the heating sleeve or the cooling sleeve at the same time until the limiting anti-shaking devices infinitely approach the insulated power cable, so that the limiting anti-shaking devices limit the position of the insulated power cable; the insulated power cable is prevented from shaking in the conveying process, or abrasion between the insulated power cable and the inner wall of a pipeline is also prevented, and the finished product efficiency of the insulation power cable is not affected, and the abrasion rate is reduced through rotating connection between an anti-shaking roller and an anti-shaking frame.

Description

technical field [0001] The invention belongs to the technical field of power cable manufacturing equipment, and in particular relates to insulation production and crosslinking equipment for power cable manufacturing. Background technique [0002] Power cable insulation eccentricity is an assessment index that reflects the insulation production and processing capabilities. The national standard GB / T12706 stipulates that the cable insulation eccentricity should not exceed 15%. The standard stipulates that the calculation method of insulation eccentricity is (insulation maximum thickness - insulation minimum thickness) ÷ insulation maximum thickness × 100% on the same cross section. With the improvement of engineering project requirements for product performance indicators, the insulation eccentricity of high-quality cables required by high-quality projects has been increased from the national standard of no more than 15% to no more than 6%, and more stringent projects need to ...

AI Technical Summary

Problems solved by technology

The insulation extrusion method of the catenary (CCV) production type and the cross-linking method of the vulcanized tube are catenary horizontal distribution. During the extrusion and vulcanization process at high temperature, the insulation eccentricity is difficult to control due to the action of gravity; although engineers and technicians In the existing CCV technology, technologies such as up-and-down rotary traction and down-traction winding device have been developed. However, due to the large span at both ends of the catenary, in addition to the eccentricity caused by gravity, there are also problems such as suspension vibration caused by equipment coordination. At present, Eccentric control level can only be guaranteed within 10%

Another vertical tower (VCV) production cross-linking type, its insulation extrusion and cross-linking method is arranged in a straight line and vertically, which solves the problem that the eccentricity of the insulation due to gravity and catenary vibration is difficult to control, and the insulation eccentricity can be controlled within 5 %, but due to the high cost of the vertical tower caused by the length of the vertical vulcanized tube, the high risk of construction safety, and the low production efficiency due to the short length of the vulcanized tube due to height restrictions, it is generally only used in small market demand and Production of high-voltage and extra-high-voltage cables with high technical level; for medium-voltage products with large market demand, catenary cable (CCV) is generally used for production

[0004] Among them, the patent No. CN210378607U discloses a cross-linking device for high-quality power cable insulation production. When the device is in use, the extruder unit is placed on the three-layer platform, the adjustable steering wheel is placed on the negative layer platform, and the fixed steering wheel is placed on the negative platform. The two-story platform, the outlet seal, and the take-up frame are placed on the first-floor platform; from top to bottom, the space between the extruder unit and the adjustable steering wheel is composed of a vertical heating pipe and a vertical cooling pipe; the adjustable steering wheel and the fixed steering The space between the wheels is composed of vertical section upward cooling pipes, but this device has certain defects in use: the device cannot obtain effective alignment pipes during the manufacturing process of the insulated wire core. Limit the position so that the center between the wire core and the pipe cannot always be on the same vertical line, and the insulated wire core will be eccentric during the transmission process, and will be worn with the inner wall of the pipe, thus affecting the overall stability of the cable. And it is easy to cause cable wear, and in the process of heating and cooling, heating and cooling are uneven, which affects the cable forming, and making cables of different thicknesses requires changing different pipes back and forth, and the production efficiency is low

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