论文部分内容阅读
在管线主体焊接工程结束后所进行的注水打压试验中,有时因焊道(环形或螺旋)和管子母材的质量缺陷,当注水在升高压时而发生渗漏及爆裂,出现了较大面积、较长地段的积水。补漏之前,必需将积水排净后施焊;而以往动用的机具设备除柴油机,拖拉机、潜水泵、直流电焊机各1台外,还需运输车辆和吊车各1台配合,并需试压补漏人员15人左右。当长输管线通过冲沟或低洼盐碱地段,拖拉机不能拖动发电机爬犁前进,尚需要更多的机具车辆配合搬迁,因而占用辅助时间长,消耗机械台班费大,工程造价也高。
In the main pipeline after the end of the welding pressure test, sometimes due to weld (ring or spiral) and the quality of the pipe base material defects, when the water injection at elevated pressure leakage and burst occurred when there is a large area, Long sections of water. Before the trapping, it is necessary to drain the water after the welding; and the equipment used in the past in addition to diesel engines, tractors, submersible pumps, DC welder each one, the need for transport vehicles and cranes each with a Taiwan, and need to test pressure Trapping staff of about 15 people. When the long-distance pipeline passes through the gully or low-salinity saline-alkali land, the tractor can not drive the power generator to move forward on the sledge. Therefore, more machines and vehicles are required to be relocated. As a result, it takes a long time to assist and takes up a large amount of mechanical shift costs and high construction costs.