DEVICE FOR PIPELINE UNDER CONSTRUCTION dragging underwater crossings using horizontal directional drilling

摘要

The proposed utility model relates to the construction of pipelines and can be used for dragging of the pipeline by directional drilling through natural and man-made obstacles. The object of the claimed utility model is to reduce the frictional forces on the contact area of ​​the outer surface of the pipeline and ground well and, consequently, a decrease of the traction force necessary for pulling. Thus, it becomes possible to increase the diameter and length of the underwater transition. The problem is solved in that the device for pulling through the pipeline during the construction of underwater passages method of directional drilling, comprising a receiver of compressed air and a locking device with a remote control transmission at the head of the pipeline, according to the utility model, said locking device is a receiver provided with valves inlet-outlet water, air inlet-outlet valves and levers to compress them under the action of the rope leverage compression system. In turn, the arms are of a thin metal pitch. Method of directional drilling is one of the most promising technologies Crossing through natural and artificial obstacles, however, it does have its drawbacks. Thanks to a device for pulling the pipe can be improved by this method and to reduce to a minimum the disadvantages.