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Feed pump barrel sealing surface repair method

A sealing surface and feed water pump technology, applied in the field of steam turbines, can solve the problems of long repair time and high cost, and achieve the effect of short maintenance period and good economic benefits

Inactive Publication Date: 2019-07-16
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method to at least solve the technical problems of high cost and long repair time in the prior art when repairing the water pump cylinder.

Method used

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] In order to reduce the cost and shorten ...

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Abstract

The invention provides a feed pump barrel sealing surface repair method. The method comprises the steps that firstly, a groove-shaped structure used for gluing is formed in a damaged position of a sealing surface of a barrel on scene; secondly, the damaged position is coated with a repairing agent; and thirdly, after the repairing agent is dried by airing, the portion above a bonding surface is ground until the prior bonding surface is restored. According to the feed pump barrel sealing surface repair method, when the feed pump barrel sealing surface is repaired, site operation can be achieved, and the method has the characteristics of being good in economic benefit, short in repair cycle and capable of saving time, labor and materials.

Description

technical field [0001] The invention relates to the technical field of steam turbines, in particular to a method for repairing the sealing surface of a cylinder body of a feed water pump. Background technique [0002] In the prior art, each unit in a supercritical coal-fired direct air-cooled turbogenerator unit usually has three feedwater pumps, and the feedwater pump is mainly composed of two parts: a core pack and a cylinder. After being taken out and returned to the factory for overhaul, the cylinder body of the feed water pump is welded together with the inlet and outlet pipes of the feed water pump. [0003] When repairing the scouring groove of the cylinder sealing surface of the feed water pump, the cylinder needs to be removed, and the method adopted is to cut the inlet and outlet pipes, remove the anchor screws, and then remove the feed water pump cylinder. It is then transported to a manufacturing plant or a factory with large machine tools, after repair welding,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 邱子鹏
Owner CHNA ENERGY INVESTMENT CORP LTD
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