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PVC dual-wall ripple pipe for environment-protection ground-buried high voltage power cable

A technology of double-wall bellows and high-voltage power, which is applied in the field of power cables and can solve problems such as precipitation and environmental pollution

Inactive Publication Date: 2007-10-17
JIASHAN YONGNING PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of protective tube is buried in the soil and soaked by groundwater for a long time, and the heavy metals in it will be precipitated, which will make the heavy metal content of the nearby soil far exceed the standard value, thus causing pollution to the environment

Method used

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  • PVC dual-wall ripple pipe for environment-protection ground-buried high voltage power cable

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] In Fig. 1, the wall thickness of the double-wall bellows in this embodiment is 1.1-1.4 mm, and the density is 1450-1650 kg / m 3 , Vicat softening temperature ≥ 93 ℃, thermal compression force of ring section ≥ 0.45KN, volume resistance ≥ 1.0×10 13 Ω·cm, friction coefficient ≤0.35. The processing technology of this embodiment is to mix the powdery raw material formula and heat it to ≤105°C for about 3 minutes, and then enter the cold kneading pot with more than twice the volume for mixing, and the cold mixing time is about 2 to 3 minutes. After sieving, it is sent to a twin-screw extruder for extrusion molding.

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Abstract

The invention discloses an environment protection type buried polyvinyl chloride double-walled corrugated pipe for high-voltage power cable, formed by mixing and squeezing out from the powdered raw materials, the formula of which contains chlorinated polyvinyl chloride, polyvinyl chloride, acrylate, light calcium carbonate, calcium zinc composite stabilizer, epoxidized soybean oil, polyethylene wax, ethylene oxide, chlorinated polyethylene, stearic acid, acrylate, white oil, molybdate red and so on. The formula does not contain the lead, tin and other heavy metals composite stabilizer used in the existing power cable plastic protection tube, therefore the present invention has no heavy metals, especially no separatin of heavy metals endangering the hygiene and safety of the living drinking water, and does not increase the heavy metals effect to the production, installation personnel, as well as the soil, accordingly satisfying the environmental protection requirements of the urban and rural electricity development, the improvement of electrical network and the entering of overhead lines into the land.

Description

Technical field [0001] The invention relates to power cable technology, in particular to an environment-friendly polyvinyl chloride double-wall corrugated pipe for underground high-voltage power cables. Background technique [0002] Projects such as electric power development, power grid transformation, and overhead lines entering the ground require the use of a large number of cables, but it can be found that the most used cable protection tubes so far are plastic protection tubes made of heavy metal stabilizers, such as the power cable with the patent number ZL95111671.1 Plastic protective tube. This kind of protective pipe is buried in the soil and soaked by groundwater for a long time, and the heavy metals in it will be precipitated, which will make the heavy metal content of the nearby soil far exceed the standard value, thus causing pollution to the environment. Contents of the invention [0003] The purpose of the present invention is to provide an environment-frie...

Claims

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Application Information

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IPC IPC(8): H02G9/06C08L27/24C08K5/09
Inventor 冯文学肖祥骅
Owner JIASHAN YONGNING PLASTICS