Method and device for washing and seal detecting of railway vehicle braking lines

Abstract

The invention relates to a method and a device for washing and seal detecting of railway vehicle braking lines. Air inlet lines and air outlet lines are communicated with each other at the inlet end and the outlet end of each braking line, an air inlet solenoid valve is arranged on each air inlet line, a plugging solenoid valve is connected with each air outlet line correspondingly, a pressure sensor used for detecting the air pressure in the line is arranged on each of the air outlet lines, and the air inlet solenoid valves, the plugging solenoid valves and the pressure sensors are respectively connected with a microcomputer. The microcomputer controls the opening and closing of the air inlet solenoid valves and air outlet solenoid valves according to the detected air pressure in the lines so as to complete the air inflation, exhausting and pressure maintaining process of the braking lines and merge line washing equipment and seal detecting equipment into a whole to complete the line washing and the seal detecting at one time; and the operation is simple, few equipment is required, and the cost is low; and the equipment operation is controlled by the microcomputer automatically, so that the labor intensity of workers is lowered, and the line washing and the quality as well as the precision of the sealing property detection can be ensured.

Description

technical field [0001] The invention relates to a pipeline cleaning method and device, and a pipeline sealing detection method and device, in particular to a method and a pipeline cleaning and pipeline sealing detection method for rail vehicle brake pipelines that can be completed at one time. The device belongs to the technical field of rail vehicle manufacturing. Background technique [0002] The current rail vehicles are all braked by air. The bottom of the vehicle runs through the air pipelines used for vehicle braking. During the pre-treatment of these air pipelines, the large impurities and dirt in the pipelines have been removed. However, during the process of assembling these pipelines to the vehicle, some impurities such as debris will accumulate in the pipeline. In order to ensure the braking performance of the vehicle, the air pipeline of the vehicle must be sealed and clean, which is to ensure the safety of the braking equipment. The key to running and ensuring ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned cleaning and sealing detection methods have the following problems: one is to use a lot of equipment, which requires air compressors, filters, pressure gauge devices, cleaning machines, etc., and the transportation of equipment during pipeline cleaning and sealing detection is cumbersome; The sealing test cannot be completed at one time, and the high-pressure air needs to be evacuated in the middle, and the sealing test should be carried out again after the installation of the tooling; the third is the test parameters (such as cleaning pressure, sealing test time, internal pressure data control of the pipeline, etc.), which need manual control, and the data is man-made. Large factor, low precision

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