High pressure flange High pressure flange connection is a simple connection method between cast iron pipe and steel pipe. Blind flanges are available for inspection openings. In addition, it is mainly used for flanged connections through a straight pipe between 50 and 315 mm in the middle. Its performance characteristics: non-rigid bonding, disassembly, sheet resistance. Low pressure pipe flange connections are coupled to form removable common types. High pressure flange High pressure flange is a kind of pipe fittings used for process pipeline connection. According to the interface method, it is divided into threaded flange and welding flange (horizontal welding and butt welding flange). Tee is a finished pipe fitting made to facilitate the connection of branch pipes on the pipe. The diameter of the main pipe and the branch pipe are equal, and the diameter of the reducing tee is different: the diameter of the main pipe and the branch pipe are different. There are also special miter tee and so on. In general, the low pressure can be the tube of the three-way cock, but the high pressure tube is completed. Can be divided into three-way connectors by welding time isotype flange threads, the blind end of the pipe sealing plate, including the blind plate and the welding flange cover.
This method is more suitable for 32 ~ 315 mm pipe connection. Its performance characteristics: non-rigid connection, disassembly, and tensile strength. In order to better install the long socket pipe fittings and reduce the number of pipe joints, it is necessary to use anchor pipe clamps to stabilize, so as to avoid the movement of the socket and socket parts during thermal expansion and cold retraction. In view of the problems of high labor intensity, large consumption, large scale of machinery and equipment, and high cost after pressure testing of long-distance pipelines, a new rapid opening flange blind plate engineering construction method was developed. The structure, work flow and strength check of the quick-opening blind plate are introduced in detail. With the help of the application in the flash steam pipeline project, it is proved that the construction method of the quick-opening blind plate is three times more efficient than the construction method of the repeated welding joint, which also reduces the labor intensity of workers and solves the problem of high cost.