Mineral methane gas drainage pipe and production method thereof

Abstract

A mineral methane gas drainage pipe comprises a pipe body, wherein two ends of the pipe body are welded with flanges or fast joints, and the pipe body is formed by welding a carbon structural steel cold rolled steel strip, a stainless steel strip and a stainless steel composite steel strip in spiral winding mode. For every two adjacent steel strips, one steel strip is subjected to flanging, the steel strip and the other steel strip are subjected to flanging overlapping, and simultaneously a unique reinforced vault rib structure is formed through spiral winding welding. Whether to coat materials not generating gases hurting human bodies and having a good flame retardant effect on an inner layer and an outer layer of a main body is determined according to difference in materials, and the pipe body is led to be corrosion resistant, antistatic and long in service life. The pipe body is light in weight due to the fact that the pipe body is formed by welding the steel strips in spiral winding mode, and the self-designed fast joints lead the pipe body to have good sealing performance and high pressure loading capacity.

Description

technical field [0001] The invention belongs to the technical field of coal mine transportation pipelines, in particular to a mining gas drainage pipe and a manufacturing method thereof. Background technique [0002] Ventilation systems, gas drainage systems, spraying systems, and water supply and drainage systems in coal mines require a large number of pipelines. Most of the current pipelines use stainless steel pipes, seamless steel pipes, PE pipes, PVC pipes or glass steel pipes. Although stainless steel pipes and seamless steel pipes have high strength, they are expensive to use and labor-intensive to install. Due to the harsh environment in coal mines, the cost of stainless steel pipes is high. Ordinary welded pipes or seamless steel pipes are easy to be corroded and have high quality, resulting in high installation costs. Although PE pipes, PVC pipes or glass steel pipes are low in cost, they have poor antistatic and flame resistance and are not durable. When transport...

AI Technical Summary

Problems solved by technology

Although stainless steel pipes and seamless steel pipes have high strength, they are expensive to use and labor-intensive to install. Due to the harsh environment in coal mines, the cost of stainless steel pipes is high. Ordinary welded pipes or seamless steel pipes are easy to be corroded and have high quality, so the installation cost is high.

Although the cost of PE pipes, PVC pipes or glass steel pipes is relatively low, they have poor antistatic and flame resistance and are not durable. When transporting media, they tend to rub against the inner wall of the pipe to generate sparks, which pose a certain threat to safe production.

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