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Test equipment used for measuring air tightness of carriage

A test equipment, air tightness technology, applied in the direction of measuring the acceleration and deceleration rate of fluid, using liquid/vacuum degree for liquid tightness measurement, etc., can solve the problems of large error, dependence, low accuracy, etc.

Active Publication Date: 2012-06-20
CRRC TANGSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a test device for measuring the airtightness of the compartment, which is used to overcome the defects in the prior art, realize automatic detection, reduce manual participation, reduce errors, and improve the accuracy of measurement, and solve the problem that the prior art relies on manual operation Issues with skill level, large margin of error, and low accuracy

Method used

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  • Test equipment used for measuring air tightness of carriage
  • Test equipment used for measuring air tightness of carriage
  • Test equipment used for measuring air tightness of carriage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] like figure 2 As shown, the present invention provides a kind of test equipment that is used to measure the airtightness of compartment, and this test equipment is used for fixing respectively by the control device 6 of inflation device 3, air extraction device 4, control inflation device and air extraction device start-stop. The sealing plate 10 and the sealing plate 20 connected to the two ends of the compartment are composed, wherein the sealing plate 10 is provided with an air intake hole 101 and an air extraction hole 102; the sealing plate 20 is provided with an exhaust hole 201; the air intake hole 101 and the inflation device 3 rows The gas end is communicated, the air extraction hole 102 is communicated with the air extraction end of the air extraction device 4, and the exhaust hole 201 is connected with a pressure sensor 5, the signal output end of the pressure sensor 5, the power supply of the inflator 3 and the power supply of the air extraction device 4 are...

Embodiment 2

[0027] As a further improvement of Embodiment 1, the sealing plate 10 and the sealing plate 20 are respectively adjusted by a fixing bracket so that their installation positions are adapted to the installation holes at the end of the compartment 1, as Figure 3-6 As shown, the sealing plate 10 is taken as an example below for illustration. The sealing plate 10 is arranged on a fixed bracket 7 with a roller 9 at the bottom end, and at least one vertical rod 71 is fixedly arranged on the fixed bracket 7; The sliding guide rail 72 is slidably connected with the upright rod 71; The sliding connection of the sliding guide rail 72 and the upright bar 71 can adopt the cooperation of the concave portion 01 and the convex portion 02 (such as Figure 7 shown) can also use the cooperation of sleeve 03 and slide rod 04 (such as Figure 8 Shown), telescopic link 8 can adopt air cylinder or hydraulic oil cylinder.

[0028] Figure 3-5The rollers 9 shown in the figure are all universal ru...

Embodiment 3

[0030] like Image 6 As shown, as a specific implementation of the second embodiment, the sliding guide rail 72 is a sleeve, and the upright rod 71 is passed through the sleeve. It has the advantages of simple structure and reliable action. The vertical rod 71 is made of a square tube, and the sliding plate 73 can be fixed between the opposite sides of the vertical rod 71 and the sleeve by tightening bolts 70. The surface of the sliding plate 73 in contact with the square sleeve is smooth and easy to slide.

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Abstract

The invention provides test equipment used for measuring the air tightness of a carriage. The equipment comprises an air charging system, an air extractor, a control device for controlling stop and start of the air charging system and the air extractor, and seal plates used for the fixed connection at two ends of the carriage respectively, wherein one seal plate is provided with an air intake hole and an air extraction hole, and the other seal plate is provided with an air exhaust hole; the air intake hole is communicated with an air exhaust end of the air charging device; the air extraction hole is communicated with an air extraction end of the air extractor; the air exhaust hole is connected with a pressure sensor; and a signal output end of the pressure sensor, a power supply of the air charging device and a power supply of the air extraction device are connected with the control device through leads respectively. The invention realizes automatic detection to positive pressure tests and negative pressure tests, and solves the technical problems of large errors and low accuracy rate caused by manual detection in the prior art.

Description

technical field [0001] The invention relates to a test device for measuring air tightness, in particular to a test device for measuring the air tightness of a compartment. Background technique [0002] With the needs of railway development, the speed of trains continues to increase. The pressure tightness inside the carriage has become a key technology in the development of high-speed trains. The size of the sealing parameter affects the manufacturing process of the whole vehicle. [0003] At present, the structure of the air tightness test equipment used in the existing ordinary rail cars in my country is as follows: figure 1 As shown, after the sealing plate 2 is installed at both ends of the compartment 1 to be measured for air tightness, air is inflated into the compartment 1 through the air inlet 21 provided on the sealing plate 2 at one end of the compartment 1, and the sealing plate 2 at the other end of the compartment 1 The exhaust hole 22 provided on the top is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 王伯春陈永春
Owner CRRC TANGSHAN CO LTD