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Multifunctional valve element dismounting device and application method

A technology of multi-functional valve and disassembly method, which is applied in the field of mechanical assembly, and can solve the problems that disassembly and assembly cannot be carried out, the sealing surface of the valve seat cannot be ground and repaired, and the weight of the valve stem and valve core assembly of the safety valve is large, etc.

Pending Publication Date: 2019-03-26
JIANGSU NUCLEAR POWER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problems to be solved by the present invention are: the valve stem and valve core assembly of the safety valve is heavy and cannot be disassembled, and the sealing surface of the valve seat cannot be ground and repaired

Method used

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  • Multifunctional valve element dismounting device and application method

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Embodiment Construction

[0021] Below in conjunction with embodiment the present invention is further introduced:

[0022] A multifunctional valve core dismounting device, comprising a grinding hand wheel 1, a connecting rod 2, a positioning rod 3, an upper fastening nut 4, a motherboard 5, a lower fastening nut 6 and a hook 7; the upper end of the connecting rod 2 Grinding handwheel 1 is welded, and the lower end is welded on the motherboard 5; four positioning rods 3 and two suspension hooks 7 pass through the motherboard 5; each positioning rod 3 and suspension hook 7 pass through an upper fastening nut 4 and A lower fastening nut 6 is fixed on the motherboard 5 .

[0023] A valve core dismounting method, which is realized based on the multifunctional valve core dismounting device

[0024] Include the following steps:

[0025] [1] After the valve is removed, rotate it 180°, and the valve core is above the valve stem;

[0026] [2] Insert the bent ends of the two hooks 7 into two self-retaining ho...

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Abstract

The invention belongs to the field of mechanical assembly, in particular, relates to a multifunctional valve element dismounting device and an application method, and solves the technical problems ofhigh weight of valve rod and valve element modules of a safety valve, incapability of performing dismounting and incapability of grinding and repairing a sealing surface of a valve base; and the device is stable and reliable in structure and simple in application method, can quickly and accurately dismount the valve rod and valve element modules, and grinds the sealing surface of the valve base. The device comprises a grinding hand wheel (1), a connecting rod (2), positioning rods (3), upper fastening nuts (4), a master plate (5), lower fastening nuts (6) and lifting hooks (7); the grinding hand wheel (1) is welded at the upper end of the connecting rod (2), and the lower end is welded on the master plate (5); four positioning rods (3) and two lifting hooks (7) penetrate through the masterplate (5); and each positioning rod (3) and each lifting hook (7) are fixed on the master plate (5) through one upper fastening nut (4) and one lower fastening nut (6).

Description

technical field [0001] The invention belongs to the field of mechanical assembly, and in particular relates to a multifunctional valve core dismounting device and a using method. Background technique [0002] A total of 20 "КПТ59030-600.01" type safety valves are installed in the two units of Tianwan Nuclear Power Plant Phase I Project. The disassembly and overhaul period of this type of safety valve is 9 years. The safety valve is completely dismantled and overhauled. [0003] During the dismantling and overhaul of the main valve of the safety valve, the valve stem and valve core assembly weighed about 100kg. The valve was reverse-sealed. There is no lifting point on the valve, so lifting equipment cannot be used for hoisting, and the valve stem and valve core assembly cannot be removed; the sealing surface of the valve seat is a conical surface, and there is no special grinding mold, so the sealing surface of the valve seat cannot be ground. [0004] Therefore, according...

Claims

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Application Information

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IPC IPC(8): B25B27/24
CPCB25B27/24
Inventor 郭光亮孙永平姜华芮守龙倪宇峰黄磊孙旭朱友学孙传福胡银龙顾柏晓宋逸凡崔冀
Owner JIANGSU NUCLEAR POWER CORP
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