High Pressure Flange of Connection Type

High pressure flange is a kind of pipe fitting connected by process pipeline. According to the connection method, there can be threaded flange and welded flange (welded flanges of flanges and butt welding flanges). Tee is for the convenience of connection pipe and production of finished products in the line fitting, points are three links: the supervisor and the diameter of the pipe is equal, variable diameter tee: executives and branch pipe diameter, tee, etc., there are special mitre general low-pressure can live on the pipe openings tee, but high pressure pipeline must be in the finished product special tee, three links according to the connection mode can be divided into during welding and thread type flange, etc.; For sealing at the end of the pipe, there are welded blanks and flanged covers.

The thyristor connection method is suitable for joining pipe fittings with diameters ranging from purge 32 to 315mm. Its performance characteristics: non-rigid connection, removable, anti - tension. To install socket type extension and shorten pipe fitting, it must be fixed with anchor pipe card to prevent the position of the socket from moving in hot expansion and cold shrinkage. For long distance pipeline pressure test to pass the ball after the scanning line, at the serve by repeated welding head method of high labor intensity big, consumables, need more large equipment, the problem of high cost, this paper proposes a new simple quick opening blind flange plate construction method. The construction method introduces the structure, working procedure and strength check of the quick opening blind plate. Through application on acerbity NingLan gas transmission pipeline engineering, prove fast-opening blind construction method than repeated three times welding head construction methods to improve work efficiency, not only reduce the labor intensity of workers, and reduce the cost.