Hubbed slip-on-welding flange

Abstract

The invention discloses a hubbed slip-on-welding flange. The hubbed slip-on-welding flange comprises a flange plate. An inner hole formed in one side of the flange plate is provided with a welding boss. An inner hole is formed in the welding boss and communicates with an inner hole formed in the center of the flange plate. An elastic ring is arranged between the flange plate and the welding boss. The two top surfaces of the elastic ring adhere to the flange plate and the welding boss correspondingly. The flange plate is further provided with a plurality of screw holes. The screw holes are distributed in a central symmetry mode with the circle center of the flange plate as a center. The flange plate is made of a composite board. The composite board sequentially comprises a polyethylene plastic layer, a rubber layer and a PVC layer. The flange plate of the hubbed slip-on-welding flange is made of the composite board, the composite board is of a three-layer structure, and the elastic rubber layer is arranged in the middle of the composite board. The elastic ring is further arranged between the flange plate and the welding boss. The rubber layer and the elastic ring which are arranged on the flange can absorb large impact force in the using process and have a buffering protection effect on the flange and a pipe body, and the application safety of the flange and the pipe body is improved.

Description

technical field [0001] The present invention relates to a flange, more precisely, a flat welding flange with neck. Background technique [0002] Flat welding flanges are generally referred to as flat plates for short, also known as lap welding flanges. The connection between the flat welding flange and the pipe is to insert the pipe into the inner hole of the flange to the appropriate position, and then weld it. Flat welded flanges are suitable for pipeline systems with relatively low pressure levels and less severe pressure fluctuations, vibrations and shocks. The advantage of the flat welding flange is that it is easier to center when the flat welding flange is welded and assembled, and the price is relatively cheap, so it has been widely used. The flanges of the flat welding flanges commonly used at present are mostly made of a single metal or alloy, and the metal has more rigidity than elasticity. Some pipe bodies are susceptible to large impact forces during use. W...

AI Technical Summary

Problems solved by technology

The flanges of the flat welding flanges commonly used at present are mostly made of a single metal or alloy, and the metal is more rigid than elastic.

Some pipe bodies are susceptible to large impact forces when in use. When these impact forces directly act on the flange and pipe body, it is easy to cause damage to the pipe body and flange, affecting the normal use of the pipe body.

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