CN104607427A - Non-disassembling cleaning method for clear water tank in three-level maintenance project of CRH380B-series China railway high speed train - Google Patents

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

CRH380B system EMUs three grades of overhauling project filtered water tanks do not dismantle clean method

Technical field

The present invention relates to EMUs three grades of overhauling project filtered water tank clean methods.

Background technology

CHR380B system EMUs travel 1,200,000 kilometers or operation 1.5 years needs carry out three grades of maintenance.Car supernatant water tank, during EMUs are runed for a long time, creates a large amount of incrustation scales in water tank inside.Because filtered water tank integral installation is in EMUs roof, and without special clean mouth, therefore in the maintenance of other model EMUs, the cleaning solution of filtered water tank is dismantled get off and decompose cleaning.This clean method not only can produce a large amount of scraps materials and parts, causes overhaul of train-set high cost, also brings great labour intensity to plant operators, also create adverse effect simultaneously to the maintenance production cycle.Therefore how removed by the incrustation scale of EMUs filtered water tank inside clean under not disassembly status, be a difficult problem always.

Summary of the invention

The object of the invention is the above-mentioned all drawbacks produced for traditional EMUs filtered water tank clean method, the problems the such as mainly cost of overhaul is high, labour intensity is large, production efficiency is low, through field trial repeatedly and feasibility analysis, a kind of filtered water tank is provided not dismantle clean new method.

For achieving the above object, the invention provides a kind of CRH380B system EMUs three grades of overhauling project filtered water tanks and do not dismantle clean method, it is characterized in that comprising the following steps:

(1) select concentration be 4% citric acid immersion is carried out 24 hours to filtered water tank inside;

(2) soak after 24 hours, press the antifreeze emptying button on each car car internal sanitary accomodation control panel, in order to the cleaning agent in emptying each filtered water tank;

(3) utilize water purification supply channel existing in place, in each car filtered water tank, fill clear water, after filtered water tank fills, clear water is kept to soak 20 minutes, and then with reference to step (2), clear water is emptying, repeatedly operate 3 times, effectively can remove the residual fraction of cleaning agent in filtered water tank.

The invention solves the drawback that EMUs filtered water tank Conventional cleaning methods produces, advantage have following some:

(1) when guaranteeing that EMUs three grades overhaul, cleaning vehicle water tank does not carry out any tearing open, just can clean it;

(2) avoid the production loss that filtered water tank produces because of repeated disassembled and assembled, saved overhaul of train-set cost, reduce the labour intensity of plant operators, improve maintenance production efficiency;

(3) efficient, the environmental protection of cleaning mode, does not damage the health of passenger, also can not cause damage to filtered water tank inner bin;

(4) cleaning effect of filtered water tank meets the requirements of the customers completely;

(5) to the no requirement (NR) of clean place, be not only applicable to overhaul in EMUs factory, may extend to each road bureau MTU depot yet and perform, possess stronger operability.

Detailed description of the invention

The present invention includes the following step:

(1) before the clean beginning of EMUs filtered water tank, the antifreeze emptying button of getting off on internal sanitary accomodation control panel need be pressed, drain operation is carried out to filtered water tanks all in car, and the boiler inlet pipeline valve body on each joint car is placed in rest position, prevent cleaning agent from entering in boiler equipment;

(2) utilize cleaning agent note to fill to put, by the filtered water tank water filling port of each joint car, in filtered water tank, fill the citric acid cleaning agent of 4% concentration, until filled by car supernatant water tank;

(3) cleaning agent fills after work completes, and each filtered water tank keeps immersion 24 hours;

After within (4) 24 hours, having soaked, press the antifreeze emptying button on each car car internal sanitary accomodation control panel, in order to the cleaning agent in emptying each filtered water tank;

(5) utilize water purification supply channel existing in place, in each car filtered water tank, fill clear water.After filtered water tank fills, clear water is kept to soak 20 minutes, and then with reference to step 4, clear water is emptying, this step is operated 3 times repeatedly, effectively can remove the residual fraction of cleaning agent in filtered water tank.

Through above operation, the filtered water tank after adopting new method to clean, metal surface about more than 95% is exposed in its inside.Judge through curstomer's site, think that this cleaning performance meets the requirements.

Claims (1)

1. CRH380B system EMUs three grades of overhauling project filtered water tanks do not dismantle a clean method, it is characterized in that comprising the following steps:

(1) select concentration be 4% citric acid immersion is carried out 24 hours to filtered water tank inside;

(2) soak after 24 hours, press the antifreeze emptying button on each car car internal sanitary accomodation control panel, in order to the cleaning agent in emptying each filtered water tank;

(3) utilize water purification supply channel existing in place, in each car filtered water tank, fill clear water, after filtered water tank fills, clear water is kept to soak 20 minutes, and then with reference to step (2), clear water is emptying, repeatedly operate 3 times, effectively can remove the residual fraction of cleaning agent in filtered water tank.