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Dual-channel portable square wave pressure fatigue testing machine

A fatigue testing machine and portable technology, applied in the field of testing, can solve the problems of lack of gas pressure fatigue testing equipment and inability to achieve the effect of simple structure, easy operation and low power supply requirements

Pending Publication Date: 2022-04-12
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical capability of the existing domestic equipment can not meet the technical requirements of the national pressure fatigue test, and there is a lack of special gas pressure fatigue test equipment

Method used

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  • Dual-channel portable square wave pressure fatigue testing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 - gauge pressure test

[0017] Such as figure 1 As shown, a double-channel portable square wave pressure fatigue testing machine disclosed in this embodiment includes a bilateral gear ring 1, an incomplete gear 2, a first piston rod 3, a first piston 4, a first cylinder 5, a first Measuring pressure sensor 6, second piston rod 7, second piston 8, second cylinder 9, second measured pressure sensor 10;

[0018] A dual-channel portable square wave pressure fatigue testing machine is composed of driving and testing parts; the driving part is composed of incomplete gear 2 and double-sided gear ring 1, incomplete gear 2 and double-sided Driven by a motor; the test part consists of two identical systems, the first piston rod 3 and the second piston rod 7 are respectively installed on both sides of the double-sided gear ring 1, the first piston rod 3 is rotationally connected with the first piston 4, and the second The two piston rods 7 are rotationally connected wi...

Embodiment 2

[0020] Embodiment 2-vacuum test

[0021] Such as figure 1 As shown, a double-channel portable square wave pressure fatigue testing machine disclosed in this embodiment includes a bilateral gear ring 1, an incomplete gear 2, a first piston rod 3, a first piston 4, a first cylinder 5, a first Measuring pressure sensor 6, second piston rod 7, second piston 8, second cylinder 9, second measured pressure sensor 10;

[0022] A dual-channel portable square wave pressure fatigue testing machine is composed of driving and testing parts; the driving part is composed of incomplete gear 2 and double-sided gear ring 1, incomplete gear 2 and double-sided Driven by a motor; the test part consists of two identical systems, the first piston rod 3 and the second piston rod 7 are respectively installed on both sides of the double-sided gear ring 1, the first piston rod 3 is rotationally connected with the first piston 4, and the second The two piston rods 7 are rotationally connected with the ...

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Abstract

The invention discloses a two-channel portable square wave pressure fatigue testing machine, and belongs to the technical field of testing. The device is mainly composed of a driving part and a testing part. The driving part is mainly composed of an incomplete gear and a bilateral gear ring. The small motor is adopted to drive the incomplete gear to serve as an excitation source, the gear rotates to drive the bilateral gear ring to reciprocate back and forth, the bilateral gear ring drives the piston to extrude gas in the air cylinder to generate periodic square wave pulsation pressure, and square wave pressure pulsation for a fatigue test can be generated. According to the invention, two-channel testing can be carried out, the device can be freely moved and carried to a test site for testing according to use requirements, the motor can be driven by the rechargeable battery in the absence of a power supply, the pulse high and low voltage amplitude and frequency can be adjusted in a large range, and the device has very high durability and reliability. The electromagnetic interference on the sensor is avoided, the environment is not polluted, the maintenance is simple, and the pipeline is not easy to block.

Description

technical field [0001] The invention relates to a double-channel portable square wave pressure fatigue testing machine, in particular to a square wave pressure fatigue testing machine with adjustable frequency and pressure, which belongs to the field of testing technology. Background technique [0002] With the improvement of the reliability requirements of various pressure equipment in the industrial field, more and more items of assessment are included in the pressure fatigue test using alternating high and low pressure. The national standard GB / T15478-1995 and the national military standard GJB4409A-2011 stipulate that the service life of the pressure measuring equipment shall be assessed by the fatigue life test (accelerated life test). The technical requirements for pressure fatigue tests in European and American countries are much higher than those in China. For example, the number of pressure cycles is required to reach 1 million or even 10 million times, far exceedin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L25/00G01L27/00G01M13/00G01N3/36
Inventor 史博李天然王辰辰
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA