| 摘要 |
FIELD: machine building. ^ SUBSTANCE: invention is related to pipeline transport and is used in installation of underwater pipeline by pulling it through larger diametre shell installed on water reservoir bottom. In head part of pipeline prepared for pulling tight area of air excessive pressure is created - receiver, which in process of pulling and filling of pipeline internal cavity with water from shell previously filled with it provides for floatage of pipeline head part. After head part of pipeline crosses minimum vertical elevation of underwater passage, air from receiver is expelled into pipeline, at that air plug is created due to water displacement, which does not prevent further filling of pipeline with water in process of pulling. Receiver is equipped with stop device for air injection from external source, stop device with drive for remote control of air expelling in pipeline, supply pipe with check valve for pipeline filling with water in process of pulling. There is support roller installed to reduce friction forces in process of pipeline pulling inside shell on external surface of head part, on pipeline upper generatrix. ^ EFFECT: expansion of technical facilities arsenal. ^ 3 cl, 3 dwg |
