Tool for fixing grinding ring for high-pressure flange sealing face

Abstract

The invention introduces a tool for fixing a grinding ring for a high-pressure flange sealing face. The tool is characterized by comprising an inner fixing tray component, an outer fixing tray component and a connecting screw rod component, wherein the inner fixing tray component comprises an inner fixing tray, cushioning blocks, fixing bolts with nuts and a central nut I; the outer fixing tray component comprises a cross bracket, fine adjustment bolts, a stay bolt with a nut and a central nut II; and the connecting screw rod component comprises a connecting screw rod and a back-pressure nut. The tool has the following beneficial effects: field fabrication is facilitated; fixing of the grinding ring in the grinding process of the sealing face can be effectively guaranteed; the influence of dead weight of the grinding ring on the grinding process is eliminated; the grinding accuracy of the sealing face is ensured; grinding of the sealing face is well completed without electric tools on site, so that the equipment, technical and labor costs are lowered; convenience is brought for personnel to operate; and meanwhile, physical output of personnel in the operating process is reduced.

Description

technical field [0001] The invention relates to a high-pressure large-diameter flange arranged vertically in oil refining, equipment manufacturing, or other industrial installations. The sealing surface is treated with a grinding ring. A tool for fixing the grinding ring, especially a fixed high-pressure flange sealing surface grinding ring frock. Background technique [0002] High-pressure flanges are inevitable components in modern industrial installations and high-pressure equipment manufacturing industries. Generally, the sealing surface of high-pressure flanges is a ring groove type. In the process of device construction, operation, and equipment manufacturing, it is inevitable that the sealing surface will be minimally invasive, corroded, or have slight quality defects. If it can be repaired, it needs to be treated with tooling. Generally, electric mechanical tools or grinding rings can be used. Because electric mechanical tools are expensive and require specialized t...

AI Technical Summary

Problems solved by technology

For large-diameter high-pressure flanges, when the facade is arranged or the flange is arranged facing downwards, there is a problem with the use of grinding rings. For example, the grinding rings for DN400 size flanges have a mass of about 10kg, and the influence of gravity is obvious.

[0003] Due to the high precision required for the sealing surface of the high-pressure flange, once the sealing surface is ground and deformed due to the improper fixing method of the grinding ring, it will cause greater economic losses. How to use suitable fixing tools suitable for the site environment and effectively solve the above problems become a difficulty in construction

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