Cable protection pipe with multi-layer structure and production method thereof

• Main Authors: ZENG PENG, DING SHIYONG, HE CHENGLIN
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2021
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The invention relates to the field of cable protection pipes, in particular to a cable protection pipe of a multi-layer structure and a production method thereof.The cable protection pipe comprises a pipe body, the pipe body comprises a high-density polyethylene outer sleeve, a knitted reinforcing layer and a modified polyurethane inner pipe, and the knitted reinforcing layer is pressed on the outer side wall of the modified polyurethane inner pipe; and the high-density polyethylene outer sleeve is pressed on the outer side wall of the knitted reinforcing layer, the knitted reinforcing layer is located between the high-density polyethylene outer sleeve and the modified polyurethane inner pipe and comprises high-elastic modulus fibers, high-grade cement is pressed on the outer side wall of the high-elastic modulus fibers, high-friction vinylon is pressed on the outer side wall of the high-grade cement, and plant fibers are pressed on the outer side wall of the high-friction vinylon. The high-density polyethyle