Auxiliary structure for concentricity of large pressure vessel

By designing a concentricity auxiliary structure for the fixed sleeve, expansion column, and support block, the problem of inconsistent central axes in the assembly of large pressure vessels was solved, and precise calibration and stable welding of component concentricity were achieved.

CN224476101UActive Publication Date: 2026-07-10LUOYANG BOXING PRESSURE VESSEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG BOXING PRESSURE VESSEL CO LTD
Filing Date
2025-08-13
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

During the assembly of large pressure vessels, existing concentricity aids are insufficient to fix components with different diameters, resulting in inconsistent center axes and affecting assembly accuracy and sealing performance.

Method used

A concentricity auxiliary structure including a fixed sleeve, an expansion column, a support block, and a cover plate was designed. The cooperation of the expansion column and the support block ensures that the central axis of the fixed sleeve is consistent with the central axis of the component, and the concentricity of the other component is calibrated by the limiting slider and the cover plate.

Benefits of technology

It effectively reduces the problem of inconsistent center axes caused by diameter errors, improves the concentricity calibration accuracy of large pressure vessel components, and facilitates welding and fixing operations.

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    Figure CN224476101U_ABST
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Abstract

The utility model discloses a large -scale pressure vessel concentricity auxiliary structure relates to pressure vessel assembly technical field, including fixed sleeve, the inside of fixed sleeve is provided with thread groove, the inner wall thread groove is connected with thread block, the top fixed connection of thread block has fixed column, the bottom fixed connection of thread block has expansion column, and expansion column is conical and sets up, and the bottom of fixed sleeve is connected with support column and support block through sliding, one end fixed connection of support column has the board of close contact, and the inner wall slide of close contact board is close to the surface of expansion column, and the other end fixed connection of support column is in the inside of support block, and the inner wall fixed connection of fixed sleeve has the spring, when the diameter of concentricity auxiliary tool and the opening diameter of the component of required installation have the difference, at this moment, not only the auxiliary tool can not be fixed well, and the center axis of auxiliary tool will have the problem of the difference with the center axis of component.
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