Clamping valve rod packing leak-off ring inner ring taking out device and installation method thereof

Abstract

The invention provides a clamping valve rod packing leak-off ring inner ring taking out device and an installation method thereof. An annular groove is formed in the outer wall of the upper portion of a conical surface elastic claw (1) to install fullers (4); the middle of the conical surface elastic claw (1) is in threaded connection with the upper portion of a cone sleeve (2) and is in conical fit with the lower portion of the conical sleeve (2). The installation method of the inner ring taking out device comprises the steps that the conical surface elastic claw (1) is installed on the outer side of a valve rod (5), the cone sleeve (2) is installed on the outer sides of the middle portion and the lower portion of the conical surface elastic claw (1), and the fullers (4) are installed in the groove formed in the upper portion of the conical surface elastic claw (1) to be fixedly connected through fastening screws (8); by means of the clamping valve rod packing leak-off ring inner ring taking out device, a leak-off ring inner ring (7) is taken out, and the leak-off ring inner ring (7) is sawn off or pinched off. The clamping valve rod packing leak-off ring inner ring taking out device and the installation method thereof have the advantages that on the condition that a packing chamber is narrow and small in space, the packing leak-off ring inner ring can be taken out conveniently and rapidly; on the condition that equipment operation is not affected, online installing and disassembling can be achieved, operation is convenient, the structure is simple, and clamping is firm.

Description

technical field [0001] The invention belongs to the technical field of electric gate valves for nuclear power plants, and in particular relates to a device for taking out an inner ring of a clamping valve stem filler leakage ring and an installation method thereof. Background technique [0002] At present, the electric gate valves of nuclear power plants have the following hidden dangers or failures: the packing leakage ring is slightly deformed, and graphite filler debris is easily embedded in the gap between the outer wall of the leakage ring and the inner wall of the packing chamber, which cannot be cleaned, resulting in the leakage of the packing leakage ring and the packing chamber. The wall is swelled and jammed, and the packing leakage ring cannot be taken out from the packing chamber. When the packing drain ring is divided into two parts, the inner ring and the outer ring, by the EDM process, such as figure 1 As shown, it is necessary to use a special tool to remove...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a clamping valve stem packing leakage ring inner ring removal device and its installation for the technical problem that it is difficult to take out the inner ring after the valve stem packing leakage ring is divided into an inner ring and an outer ring. method

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