Use and maintenance of PE mining pipes
管材 法兰连接用防静电、阻燃 PE料制作法兰根，法兰根与管体直接对焊在一起，法兰根配活套金属法兰 , 对管材直接进行翻边扩口形成法兰根，然后配上活套金属法兰。 The flange root of PE mining pipe flange connection is made of antistatic and flame retardant PE material. The flange root and the pipe body are directly welded together. The flange root is equipped with a loose metal flange to directly flange the pipe. Form the flange root, and then match the looper metal flange.
The connection method is the same as that of ordinary pipelines, but flanges and flanges can be bolted. It is not necessary to add a gasket when sealing itself.
PE矿用 管材 予以固定（支墩、托架、吊架等），确保管道不会在压力作用或水锤（气锤）作用下产生轴向窜动，以防止管路变形或是从法兰连接处拉坏。 If the landfill installation is not performed, the PE mining pipes must be fixed (branch, brackets, hangers, etc.) to ensure that the pipeline will not cause axial movement under the action of pressure or water hammer (air hammer). To prevent pipeline deformation or damage from the flange connection.
PE矿用 管材 的刚度低于钢管，固定时还要防止 PE矿用管道 在压力作用下发生摆动和挠曲。 Because the rigidity of PE mining pipes is lower than that of steel pipes, it is necessary to prevent the PE mining pipes from swinging and flexing under pressure when fixed . When installed vertically, the distance between the two fixed points should be no more than 2m.
For horizontal installation, the distance between the two fixed points should be ≤1100mm for pipes of Φ110 ～ Φ160; ≤1500mm for pipes of Φ160 ～ Φ225.
管件安装原则管件弯头、三通、异径处是流体发生变化较大的地方，会产生波动和冲击力，使管件处发生震动，这些地方同时会承受流体压力所产生的推力，一定要采用支推墩支架托架等予以固定。 PE mining pipe fittings installation principles Pipe elbows, tees, and different diameters are where the fluid changes greatly, which will generate fluctuations and impact forces, which will cause vibration at the pipe. These places will also bear the thrust generated by the fluid pressure. Be sure to use a support bracket, etc. for fixing. Fix it with cement or brick piers, etc., and lay pipes or fittings in the piers, similar to valves.
管材 的清洗护理应用 高压水清洗：采用 50Mpa以上的高压水射流 ，对 PE矿用管内表面污垢进行高压水射流剥离清洗。 High-pressure water cleaning is used for the cleaning and care of PE mining pipes : high-pressure water jets of more than 50Mpa are used to peel and clean the internal surface dirt of PE mining pipes . This technology is mainly used for short-distance pipes, and the pipe diameter must be greater than 50cm. The PIG pigging technology relies on the driving force generated by the pump to push the fluid to drive the PIG (pig pig) forward in the pipe, and the dirt accumulated in the PE mining pipe is discharged out of the pipe to achieve the purpose of cleaning. Chemical cleaning of PE mining pipes uses chemical agents to temporarily modify the pipelines, and the temporary chemical pipelines and circulating pump stations are used for circulating chemical cleaning from both ends of the pipelines.