Analysis of friction loss of prestressed plastic corrugated pipe equipmentAnalysis of friction loss of prestressed plastic corrugated pipe equipment
When the pre-stressed plastic corrugated pipe is stretched, friction resistance is generated due to the pre-stressed tendons contacting the pipe wall of the pre-stressed plastic corrugated pipe and sliding along the pipe. The friction loss can be divided into two parts: the influence of the curve and the influence of the movement of the pipeline. For curved pipelines, in addition to the impact of the prestressed plastic corrugated pipe, there is also the frictional resistance generated by the radial pressure of the ribs on the inner wall of the pipe. This part is called the bending effect: it increases with the increase of the bending angle of the ribs.
The friction loss of straight pipelines is small, while the friction loss of curved pipelines is composed of two parts, so it is much larger than that of straight pipelines. Straight line prestressed plastic corrugated pipes have no friction loss, but the pipes become wavy due to the deflection of concrete pouring and pipeline installation errors during construction. They are not ideally straight. In addition, the prestressed tendons sag due to their own weight. There is actually contact with the pipe, so when there is relative sliding, it will produce frictional resistance. This item is called the influence of pipe movement.
Prestressed plastic corrugated pipe equipment
The equipment of prestressed plastic corrugated pipe has high production efficiency, durable equipment and easy operation. The prestressed plastic corrugated pipe equipment greatly expands the multi-purpose performance of one machine, and the same production line can produce pipes of various specifications. The prestressed plastic corrugated pipe equipment has compact structure, easy operation, high automatic rate, and greatly reduces labor costs. The quality of the products produced, under the same consumables, the ring stiffness is higher, the flexibility is better, and the core point of the new production line is increased by at least 5%.