Non-disassembling cleaning method for clear water tank in three-level maintenance project of CRH380B-series China railway high speed train

Abstract

Disclosed is a non-disassembling cleaning method for clear water tanks in a three-level maintenance project of a CRH380B-series China railway high speed train. The method comprises the steps that the interiors of the clear water tanks are soaked for 24 hours through citric acid with the concentration of four percent; after soaking is carried out for 24 hours, anti-freezing emptying buttons on control panels of toilets in all compartments are pressed down to drain cleaning agents in all the clear water tanks; the clear water tanks of all the compartments are filled with clear water through existing pure water supply pipelines in the site, after the clear water tanks are filled with the water, clear water soaking is kept for 20 minutes, the step is repeated three times, and residuals of the cleaning agents in the clear water tanks can be effectively removed. It is ensured that in the three-level maintenance process of the China railway high speed train, the clear water tanks of the compartments can be cleaned without being disassembled; production losses caused by repeated assembling and disassembling of the clear water tanks are avoided, the maintenance cost of the China railway high speed train is saved, the labor intensity of workshop operators is lowered, and maintenance production efficiency is improved; the cleaning mode is efficient and environmentally friendly, the health of passengers is not harmed, and tank bodies in the clear water tanks are not damaged; the cleaning effect of the clear water tank completely meets the requirements of clients.

Description

technical field [0001] The invention relates to a method for cleaning a clean water tank of a three-level maintenance item of a motor train unit. Background technique [0002] CHR380B series EMUs need to undergo three-level maintenance after driving 1.2 million kilometers or running for 1.5 years. During the long-term operation of the EMU, a large amount of scale was generated inside the water tank. Since the clean water tank is installed on the roof of the EMU as a whole, and there is no special cleaning port, in the maintenance of other types of EMUs, the cleaning solution for the clean water tank has always been to disassemble it and disassemble it for cleaning. This cleaning method will not only produce a large number of scrap parts, resulting in high maintenance costs for EMUs, but also brings great labor intensity to workshop operators, and also has a negative impact on the maintenance production cycle. Therefore how to remove the scale inside the clear water tank of...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the above-mentioned disadvantages caused by the traditional clean water tank cleaning method of EMUs, mainly the problems of high maintenance cost, high labor intensity, low production efficiency, etc., after many field tests and feasibility analysis, provide a A New Method for Cleaning Clean Water Tank Without Disassembly