Welding method and structure of tube seat

Abstract

The present invention discloses a welding method and a structure of tube seat. According to the method, a welding bevel is firstly welded on the tube seat, and the end of the tube seat, which is welded with the welding bevel is welded with a medium container. The invention is characterized in that an end hole Dz which penetrates through the tube seat and the medium container is processed from thetop end of the tube seat after the welding of the tube seat and the medium container, and the basal diameter Dd of the welding bevel is smaller than the diameter Dz of the end hole. According to the invention, as a deep bevel is provided at the connecting part between the tube seat and the tube or the device, the welding quality can be increased, and the welding stress can be reduced as the weld surface has an arc shape. The tube base is provided with a guiding hole, the final through hole processing can be completed in one time from the guiding hole after welding, and the concentricity between the tube seat and the tube or the opening on the device can be guaranteed. Furthermore the places with the uneasily guaranteed welding quality of the bevel bottom are processed thoroughly for increasing the welding quality and the welding reliability and preventing the leakage. The welding method and the structure of the invention are particularly suitable for the high-voltage high-temperature pipe for preventing the pipe leakage or pipe cracking accident.

Description

Welding method and structure of a pipe seat technical field The invention relates to a welding method and structure, in particular to a welding method and structure of a pipe seat. Background technique At present, when welding the pipe seat on the medium container (pipeline or equipment), generally the holes on the pipe seat and the medium container are processed first, and then the holes on the pipe seat are aligned with the holes on the medium container to weld the pipe seat on the media container. With this welding method and structure, the holes on the tube base and the holes on the medium container are not easy to align during the welding process. etc.) when connecting, because the concentricity of the hole on the tube base and the hole on the medium container is not good, it is difficult to insert the connector, and sometimes it cannot even be inserted, which brings trouble to the installation. In addition, with this welding method and structure, the welding qualit...

AI Technical Summary

Problems solved by technology

With this welding method and structure, the holes on the tube base and the holes on the medium container are not easy to align during the welding process. etc.) when connecting, because the concentricity of the hole on the tube base and the hole on the medium container is not good, it is difficult to insert the connector, and sometimes it cannot even be inserted, which brings trouble to the installation

In addition, with this welding method and structure, the welding quality is not easy to guarantee, the welding reliability is poor, and leakage is prone to occur at the welding place.

Especially high-pressure and high-temperature pipelines are more prone to leakage or cracking accidents

Images