Anchor flange used in “West to East Gas Transmission Project”
The west to east gas transmission project is an important pipeline system project in China. Among them, there are many kinds of flange used and they play an important role. Anchor flange is one of them.
The anchor flange is a kind of very important supporting component in large diameter, high pressure, long distance gas or oil pipeline. The shape of the anchor flange is similar to the neck butt welding flange. The weight can be estimated by referring to two weld neck flanges of the same size.
The anchoring flange is mainly welded on the gas transmission or oil transmission pipeline,and fixed with cement pier, semi buried or fully buried underground.Where the pressure of the pipeline system is small,the short pipe can be used instead. When the connection of the fixed pipeline which is required to be buried in the ground or not maintained for life and the pressure is large, the conventional flange can not ensure the safe and reliable work of the high-pressure pipeline.
The anchor flange is an axisymmetric torus with flange.The two sides of the flange are symmetrical flange necks. The ends of the two flange necks are welded with the ends of the pipe respectively and embedded in the anchor pile.By using the prior art, the two bolted flanges are combined together,the sealing gasket is cancelled, and an integral flange is made, which is connected with the gas transmission pipeline by welding, and fixed with the anchor pile by its flange and flange body, so that the anchor flange is used to fix the connection of the pipeline.
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