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Cleaning method of steam generator

A technology of steam generator and trolley, which is applied in the directions of cleaning methods and utensils, chemical instruments and methods, cleaning hollow objects, etc., which can solve the problems of inaccessibility of personnel for cleaning and reduction of heat transfer efficiency of pipe walls.

Active Publication Date: 2019-03-19
GUANGDONG NUCLEAR POWER JOINT VENTURE +3
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  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a cleaning method for a steam generator to solve the technical problems in the prior art that the dirt on the outer surface of the pipe wall cannot be cleaned, which will cause a decrease in heat transfer efficiency, and personnel cannot enter to clean it

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  • Cleaning method of steam generator
  • Cleaning method of steam generator
  • Cleaning method of steam generator

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specific Embodiment approach

[0053] Furthermore, please also refer to Figure 11 , as a specific embodiment of the cleaning method of the steam generator 1 provided by the present invention, step A specifically includes the following steps:

[0054] A1. Lay out the threading trolley and the tensile cable, place the threading trolley 4 on the first support plate 15 through the hand hole 13 on one side of the steam generator 1, the threading trolley 4 is connected with a tensile cable, and control the threading trolley 4 to move to The hand hole 13 on the other side of the steam generator 1, and take out the threading trolley 4;

[0055] A2. Pull the chain assembly 23 and the washing trolley 3 by the tensile cable to realize the laying of the chain assembly 23 and the washing trolley 3 . Specifically, between the follow-up operations, first use the threading trolley 4 to thread the cables into the first support plate 15 of the steam generator 1. Due to the large volume of the steam generator 1, the chain a...

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Abstract

The invention provides a cleaning method of a steam generator. The cleaning method of the steam generator is used for cleaning the outer wall of a pipeline of the interior of the steam generator, a chain assembly, a flushing trolley and other parts are placed on the inner side of the steam generator through a hand hole in one side of the steam generator, and the flushing trolley, a forward traction assembly and a reverse tensioning assembly are sequentially arranged; the position of the flushing trolley is adjusted, it is guaranteed that the flushing trolley can flush the middle position of the outer wall of the pipeline, the flushing effect is guaranteed, the flushing trolley is controlled by a control mechanism in the exterior, the problem of electricity generating efficiency parameter affected by dirt accumulated on the surface of the pipeline wall and the decline of thermal transmission efficiency is solved, and in addition, the problem that personnel is prone to more radiation directly entering the steam generator for cleaning can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of steam generators, and more specifically relates to a cleaning method for steam generators. Background technique [0002] The main function of the nuclear power plant steam generator (SG for short) is to transfer the heat in the coolant of the primary circuit to the feed water of the secondary circuit as a heat exchange device, so that it can generate saturated steam and supply it to the power plant of the secondary circuit. It is a device that connects the primary circuit and the secondary circuit, and forms a second barrier between the primary and secondary circuits to prevent radioactive leakage. Due to the activation of water after radiation and the possibility of damage and leakage of a small amount of fuel cladding, the primary coolant flowing through the core is radioactive, so the cleaning of the steam generator is more difficult. [0003] In the prior art, there is sludge on the outer wall (secon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/023
CPCB08B9/023
Inventor 张志明郭景哲李守彬丛培君李平仁沈培孔晨光
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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