直径1016 mm的O形圈封堵长输管道快速封堵器的制造结构及封堵能力研究 The Manufacturing Structure and Plugging Capacity of Fast Plugging Device with Diameter 1016 mm O-ring for Long-distance Pipe
针对管道施工中封堵管口时的成本高、封堵时间长等缺陷，研制了一种采用O形圈进行封堵的长输管线快速封堵器。介绍了快速封堵器的结构及封堵原理，并用直径1016 mm规格的封堵器在管段进行封堵试验。结果证明当管段内气压小于0.023 MPa时，管段内严密性良好。当管外部压强小于0.23 MPa时，焊接盲板管段保持良好，能够满足长输管道施工过程中临时封堵管口的要求。
In view of the defects of the high cost and long duration of plugging operation on the pipe orifice, a fast plugging device with o-ring for long-distance pipeline is developed. The structure and its plugging principle of the fast plugging device are introduced; a test is performed by using a plug-ging device with diameter of 1016 mm. The result indicates that when pressure is less than 0.023 MPa inside pipeline, sealing performance is good inside the pipeline. When the external pressure is less than 0.23 MPa, the welding blind plate pipe section is well maintained; it can meet the requirements of temporary plugging pipe in the long-distance pipeline construction.
