Heavy caliber pipe fitting method

Abstract

The invention provides an installation method of a large diameter pipeline, which has the advantages of simple and easy implementation, time saving and labor saving during the installation at the over-bent area. The installation method of the large diameter pipeline adopts a rubber gasket type mouthing pipe and a rubber gasket matching with the mouthing pipe. The invention is characterized in that the rubber gasket type mouthing pipe is 1 to 2 meters in length and is connected with the rubber gasket by a sealing way. The rubber gasket is of the well-known and common random model, and the preferable model is a R type rubber gasket. The rubber gasket type mouthing pipe is the well-known and common random material, and the preferable material is the PVC-U pipe. The diameter of the rubber gasket type mouthing pipe is Phi 250 to Phi 315 millimeter. Due to adopting the rubber gasket type mouthing pipe with 1 to 2 meters of length, the length is greatly decreased by compared with 6 meter of the original length, therefore, when the rubber gasket type mouthing pipe is put into the over-bent area after direct connecting with the rubber gasket, the pipeline can be naturally shaped according to the excavation direction, and any auxiliary facility is not required. The installation procedure has the advantages of simple and easy implementation, time saving and labor saving, greatly decreasing the installation cost, enabling water to flow smoothly and not being easily leaked and lost.

Description

technical field [0001] The invention relates to a method for installing a water supply and drainage pipeline. Background technique [0002] During the second water improvement process in the town, our factory involved the installation of a large number of Φ250-Φ315 large-diameter PVC-U pipes. Since our town is located in the land of fish and rice, the ditches in the area are vertical and horizontal, and the cement road is covered. The pipe installation involves various excavation sections. , Many houses and obstacles beside the polder embankment have a large amount and a wide area, and the excavation is difficult. During the construction process, many places turned in an S-shape. According to the national standard, a single pipe is 6 meters long, and the bend is connected by an elbow, and the axial thrust should be calculated according to the pressure inside the pipe, and a buttress should be set to fix the pipe. The pier should be close to the undisturbed soil and should n...

AI Technical Summary

Problems solved by technology

[0003] This technology has the following disadvantages: ①In the process of installing elbow fittings, many human factors are involved, such as the surface of the pipe is not cleaned, the roughening of the abrasive cloth is not in place, the bonding effect of the adhesive is not good, and it is limited by the temperature, which makes it easy to occur during use. Water leakage in the pipe network; ②Bend pipes, adhesives, etc. are used, and the cost of materials is high; ③When the water supply pressure is high, it is easy to leak; ④The pier is bent, and the water flow pressure is damaged, and the pier is poured with concrete, so the cost is high; ⑤ The installation steps are cumbersome, time-consuming and labor-intensive, and the installation cost is high