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Maintenance and installation tool for nuclear-grade regulating valve base

A technology for installing tools and regulating valves, which is used in manufacturing tools, grinding/polishing safety devices, seat surface grinders, etc., and can solve the problems of valve seat sealing ring leakage, poor flow regulation accuracy of regulating valve, and damage to the valve seat, etc. Achieve the effect of solving disassembly and fastening problems, reducing radiation dose and high work efficiency

Pending Publication Date: 2019-01-01
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention: Aiming at the deficiencies of the prior art, the present invention provides a maintenance and installation tool for the valve seat of a nuclear-grade regulating valve, which can eliminate the risk of damage to the valve seat when using a percussion screwdriver and a hand hammer to disassemble and install the valve seat And because the screwdriver is not fastened in place, the valve seat sealing ring leaks, which leads to the poor flow adjustment accuracy of the regulating valve and other problems.

Method used

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  • Maintenance and installation tool for nuclear-grade regulating valve base
  • Maintenance and installation tool for nuclear-grade regulating valve base
  • Maintenance and installation tool for nuclear-grade regulating valve base

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Embodiment Construction

[0020] The following is a further detailed description of a valve seat maintenance and installation tool for a nuclear-level regulating valve provided by the present invention in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 2 As shown, the present invention provides a kind of maintenance and installation tool for the valve seat of a nuclear-grade control valve, including a grinding rod 1, a fastening positioning nut 2, and a grinding head 3; the grinding head 3 is located in the inner cavity of the valve seat 4, and the grinding The rod 1 passes through the center hole of the fastening positioning nut 2 and is threadedly connected with the grinding head 3 .

[0022] Fastening positioning nut 2 comprises fastening positioning nut hexagonal head 5, fastening positioning nut guide hole 6, fastening positioning nut claw 7; fastening positioning nut hexagonal head 5 is fixedly installed on the top of fastening positioning nut claw 7,...

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Abstract

The invention belongs to the technical field of mechanical assembly, and particularly relates to a maintenance and installation tool for a nuclear-grade regulating valve base. The tool comprises a grinding rod, a fastening position nut and a grinding head, wherein the grinding head is positioned in an inner cavity of the valve base, and the grinding rod penetrates through a center hole of the fastening position nut and is connected with the grinding head. According to the tool, the risk that the valve base is damaged when the valve base is disassembled by using a knocking screwdriver and a hand hammer can be eliminated, and the problems that a valve base sealing ring is leaked and the adjusting precision of an adjusting valve is poor due to the fact that the knocking screwdriver is not fastened in place are solved.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly, and in particular relates to a maintenance and installation tool for a valve seat of a nuclear-level regulating valve. Background technique [0002] In the two WWER-1000 / V-428 nuclear reactor units of the first phase project of Tianwan Nuclear Power Plant, there are multiple УФ68019-015К nuclear-grade control valves supplied by Russia. When this type of control valve is disassembled for overhaul, the valve needs to be replaced Remove the valve seat, replace the seat sealing gasket, and grind the sealing surface of the valve seat at the same time. When reassembling, the valve seat needs to be re-tightened to compress the valve seat sealing gasket. The sealing gasket of the valve seat is a nickel washer. Due to the structural characteristics of the valve seat, maintenance personnel can only use a percussion screwdriver to tap the groove on the upper part of the valve seat to unscrew the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B15/02B24B41/06B24B37/00B24B37/27B24B55/00
CPCB24B15/02B24B37/00B24B37/27B24B41/06B24B55/00
Inventor 孙传福芮守龙孙永平姜华郭光亮黄磊孙旭朱友学胡银龙顾柏晓崔冀宋逸凡
Owner JIANGSU NUCLEAR POWER CORP
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