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Rail vehicle whole tightness test method and system

A rail vehicle and test system technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of the fluid, can solve the problems that cannot meet the quality requirements, and achieve simple and feasible operation and high detection accuracy Effect

Active Publication Date: 2009-10-07
CHINA RAILWAYS CORPORATION +1
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AI Technical Summary

Problems solved by technology

[0003] In the production process of rail vehicles in the past, due to the limitation of technical conditions, the airtightness test of the whole vehicle was generally not carried out, but this can no longer meet the quality requirements of the rapid development of high-speed rail vehicles, so it is necessary to have a test method that can test the entire vehicle Air tightness test method

Method used

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  • Rail vehicle whole tightness test method and system
  • Rail vehicle whole tightness test method and system
  • Rail vehicle whole tightness test method and system

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0021] Such as figure 1 As shown, the airtightness test system for rail vehicles of the present invention includes: a compartment sealing device, an air source 3 , an intake pipe 4 , a solenoid valve 5 , a detection air pipe 6 , a pressure sensor 7 , and a computer console 8 .

[0022] Before carrying out the airtightness test, the entire car compartment 1 under test must be sealed. In addition to closing the windows, the doors 2 at both ends of the compartment 1 must be sealed.

[0023] Car door 2 adopts airtight end door 9 to seal, and airtight end door 9 is a frock door, and it is fixed on the door frame of car door 2, and seals with sealing strip (such as can adopt rubber strip etc.) with car door 2, and uses Tooling connects and fixes the doorframe of car door 2 with airtight end door 9. In order not to damage the doorframe of car door 2, ...

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Abstract

The invention relates to a method and system for testing the airtightness of a rail vehicle. The method is to seal the compartment of the entire vehicle, inflate the interior of the compartment, and let it leak in a natural state after the inflation is stopped. The pressure of the air in the compartment Then it will gradually drop, and the change data of the air pressure in the compartment will be detected during the drop process, so as to judge whether the airtightness of the vehicle meets the design requirements of the vehicle. The system includes a compartment sealing device that seals the doors at both ends, an air source that inflates the compartment, and an air intake pipe that connects the air source and the compartment. The electromagnetic valve of the circuit also includes a detection gas pipe, one end of the detection gas pipe is connected with a pressure sensor for detecting pressure, and a computer console for analyzing and processing various data. The invention accurately judges the airtightness of the entire vehicle compartment by detecting the pressure change in the compartment, has high detection precision, and is easy and feasible to operate.

Description

technical field [0001] The invention relates to an airtightness test method and system, in particular to a method and system for performing an airtightness test on the entire body of a rail vehicle. Background technique [0002] In the production process of rail vehicles, there are many indicators used to judge the performance of the vehicle, among which the airtight performance of the vehicle is an important indicator to measure the performance of the vehicle, especially for high-speed rail vehicles with a speed of more than 200 kilometers per hour. Confidentiality is even more important. [0003] In the production process of rail vehicles in the past, due to the limitation of technical conditions, the airtightness test of the whole vehicle was generally not carried out, but this can no longer meet the quality requirements of the rapid development of high-speed rail vehicles, so it is necessary to have a test method that can test the entire vehicle Test method for airtight...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
Inventor 王小成马瑜业吕任远
Owner CHINA RAILWAYS CORPORATION
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