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Sealing device for hydraulic pump of nuclear power station

A technology for sealing devices and hydraulic pumps, which is applied to components of pumping devices for elastic fluids, engine seals, pump components, etc., and can solve problems such as hydraulic pump seal failure, design and disassembly difficulties, and high-pressure steam leakage , to achieve the effect of ensuring sealing performance, reducing the risk of scratches, and facilitating disassembly

Pending Publication Date: 2022-03-22
JIANGSU NUCLEAR POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a sealing device for hydraulic pumps in nuclear power plants, which solves the problem of design problems and difficulty in disassembly that cause hydraulic pump seals to fail. Leakage of high-pressure steam will cause the equipment to be unusable, and high-temperature and high-pressure steam leakage is safe. very serious problem

Method used

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  • Sealing device for hydraulic pump of nuclear power station
  • Sealing device for hydraulic pump of nuclear power station

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, not all of them. Based on the embodiments described in this application, all other embodiments obtained by those skilled in the art without creative efforts are within the protection scope of this application.

[0033] The inventors of the present application have found in research, such as figure 1 As shown, in an existing sealing device for a hydraulic pump in a nuclear power plant, the sealing ring 11 is a self-sealing structure with a conical surface, and the material is austenitic stainless steel. The outer circular surface of the ring 11 cooperates with the inner wall of the pu...

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Abstract

The invention belongs to the technical field of nuclear power station rotating equipment maintenance engineering, and particularly relates to a sealing device for a nuclear power station hydraulic pump, after a graphite sealing ring in the sealing device is extruded by a pressing ring, graphite can effectively fill scratches on the inner wall of a pump cavity, and the sealing performance is greatly improved. In addition, according to the sealing device, the contact area of the outer cylindrical face of the metal self-sealing ring and the shell is reduced by about a half, the interaction force between the sealing ring and the pump shell is reduced, the difficulty of overall disassembly of the core bag and the sealing ring is effectively reduced due to the lubricating effect of graphite, and the risk that the inner wall of the pump shell is scratched is reduced.

Description

technical field [0001] The application belongs to the technical field of overhaul engineering for nuclear power plant rotating equipment, and in particular relates to a sealing device for a nuclear power plant hydraulic pump. Background technique [0002] A nuclear power plant unit is equipped with a hydraulic pump, which is driven by the main water supply, and is used to transport the condensed water produced by steam-water separation and heating of the steam in the heater tube to the inlet of the high-pressure heater, so as to improve the thermal efficiency of the unit. [0003] The sealing ring of the main coupling surface of the hydraulic pump is a cone self-sealing structure, and the material is austenitic stainless steel. Cooperate, the pump cover is installed on the seal ring, after the cover bolts are tightened, the seal ring is compressed and tightened to play a sealing role. [0004] However, there are two problems with this seal design: first, the seal ring canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10F16N15/02F04B53/00
CPCF16J15/104F16J15/064F16N15/02F04B53/00
Inventor 张微赵庆玉孙恺阳徐猛安宁冯光宇路玉彬韩昇奎刘星昝映辉
Owner JIANGSU NUCLEAR POWER CORP
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