A valve body structure of a cavity integral overlay welding

By designing an integral welded valve body structure, the problems of pressure-bearing welds and external leakage points were solved, achieving high tightness and low-cost manufacturing of the valve body.

CN224497613UActive Publication Date: 2026-07-14SUZHOU DOUSON VALVE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU DOUSON VALVE CO LTD
Filing Date
2025-06-27
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing internal cavity overlay welding scheme increases the pressure-bearing weld and external leakage points, affecting the tightness and load-bearing capacity of the equipment.

Method used

A valve body structure with integral internal cavity overlay welding is designed. By designing the lower cavity of the valve seat hole as an inclined cavity section, the welding torch can be inserted from the mounting cavity into the lower valve cavity of the valve body for overlay welding, avoiding the need to open a hole at the bottom of the valve body and achieving integral overlay welding of the entire internal cavity.

Benefits of technology

It reduces the risk of pressure welds and external leaks, improves the tightness and load-bearing capacity of the equipment, optimizes the internal cavity structure of the valve body, and reduces manufacturing costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224497613U_ABST
    Figure CN224497613U_ABST
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Abstract

The utility model relates to valve technical field, concretely relates to a valve body structure of inner chamber integral type surfacing, including valve body structure, the middle part of valve body structure is provided with the installation cavity, the lateral wall of installation cavity is opened the valve seat hole for installing valve seat body, the upper valve cavity and lower valve cavity of setting in valve body structure are arranged respectively to the upper and lower of installation cavity, the upper valve cavity upper end is connected with the valve cover, the lower valve cavity includes the inclined cavity section and lower cavity section from top to bottom in proper order, the inclined cavity section is connected in the lower end of valve seat hole, the inclined cavity section is the horn shape that lower end cross section is greater than the upper end cross section, the lower cavity of valve seat hole is designed into the inclined cavity section of inclined surface, to realize welding torch from installation cavity and enter the lower valve cavity of valve body structure, can realize the surfacing work of whole inner chamber, need not from the valve body structure bottom hole, avoid the valve body structure bottom hole, further avoid the pressure weld, improve the shell pressure safety.
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