Transition joint

Abstract

The invention relates to a transition joint, comprising a joint body (1) with a connecting end (11), and an embedding recess (12) which is arranged at the periphery of the joint body (1), wherein the bottom (12b) of the embedding recess (12) is of a circular arc shape; and the diameter of the circular arc-shaped bottom (12b) ranges from 15 DEG to 20 DEG. Compared with the prior art, the transition joint has the advantages that through the design of the circular arc-shaped bottom of the embedding recess, an accommodating space matched with an O-shaped sealing ring in shape is provided and the excessive deformation of the O-shaped sealing ring can be prevented; and after pipelines are connected, the O-shaped sealing ring is not extruded to the external surface, so that the sealing effect is ensured and the good practicability is provided.

Description

technical field [0001] The invention relates to a pipe joint, in particular to a transition joint. Background technique [0002] Pipe joints are widely used in the connection of oil and liquid transportation pipelines, such as two-way joints, three-way joints, multi-way joints, etc. In order to prevent leakage at the connection between the pipeline and the joint, an O-ring is often embedded between the pipeline and the joint. O-rings are mostly made of rubber and have a certain volume. However, in actual application, the caulking groove between the pipe and the joint is often flat, and after installation, the O-ring protrudes from the caulking groove. If the caulking groove is too large, the sealing effect cannot be guaranteed and it is easy to Leakage occurs, therefore, the flat groove is often made shallower, but the depth of the groove will cause the O-ring to be difficult to accommodate, and it will often be extruded outside the port of the pipeline and exposed to the ...

AI Technical Summary

Problems solved by technology

However, in actual application, the caulking groove between the pipe and the joint is often flat, and after installation, the O-ring protrudes from the caulking groove. If the caulking groove is too large, the sealing effect cannot be guaranteed and it is easy to Leakage occurs, therefore, the flat groove is often made shallower, but the depth of the groove will cause the O-ring to be difficult to accommodate, and it will often be extruded outside the port of the pipeline and exposed to the outside. One is that the sealing ring affects the cleanliness and appearance, and the other is that it is easy to harden and shape, and loses the performance of automatically adapting to deformation, which affects the sealing effect of the O-ring and brings a lot of trouble to the actual installation.

Images