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Test device for flexible, elongated test objects

A technology of test target and test device, applied in the direction of elasticity test, measurement device, machine/structural component test, etc., can solve the problems of safety risk, wrong measurement result, etc.

Active Publication Date: 2017-03-22
INFICON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Damage to the sniffer line due to wear or damage to the sniffer line can lead to erroneous measurement results
Potential safety risk if existing leaks will not be detected due to defective sniffer conduits
[0003] Performing a resistance chain test and a torsion test are known means for testing the stress resistance of cables, however these test methods do not simulate the sniffing that occurs specifically in sniffer conduits and manual guidance for leak testing. Typical stresses in cables of probe heads

Method used

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  • Test device for flexible, elongated test objects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A roller chain 12 is designed as a closed flexible loop and is guided by three deflection rollers 14 , 16 , 18 . The chain 12 has a first suspension 20 connected thereto. The deflection rollers 14, 16, 18 are arranged at the vertices of an isosceles triangle, wherein the two lower deflection rollers 14, 16 are at the same height and the upper deflection roller 18 is located at the two lower deflection rollers About 2.95 meters above 14 and 16. The two lower deflection rollers 14, 16 are arranged approximately 1.45 meters apart from each other. The lower deflection roller 14, which is shown as the deflection roller on the left, is electrically driven by an electric drive unit 22 and when said drive unit 22 causes said deflection roller 14 to rotate, said deflection roller 14 The chain 12 will be moved along a path 15 in the form of an isosceles triangle with rounded corners. The first suspension 20 will then be moved in a cyclic manner along the path 15 . During this...

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PUM

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Abstract

The invention relates to a test device for carrying out load tests on flexible, elongated test objects (28), comprising a first suspension which is movably guided along a closed circumferential path for a first end of the test object (28), a drive (22) for moving the first suspension (20) along the path, a second suspension (26) for fastening another end of the test object (28), and a mass body (32) that can be attached to the test object (28) between the two suspensions (20, 26) in such a manner that the mass body (32) is movable along the test object (28).

Description

technical field [0001] The present invention relates to a test device for load testing on flexible elongated test objects such as cables and pipes. Background technique [0002] The above-mentioned load test is particularly important for multipurpose cables or for conduits which have to fulfill safety-related requirements, for example sniffer conduits of leak detectors. A sniffer conduit connects the sniffer probe to the leak detector such that for a leak test the sniffer probe can be guided manually while the leak detector is set in a stationary state. Damage to the sniffer line due to wear or damage to the sniffer line can lead to erroneous measurement results. A safety risk may arise if existing leaks will not be detected due to defective sniffer conduits. [0003] Performing a resistance chain test and a torsion test are known means for testing the stress resistance of cables, however these test methods do not simulate the sniffing that occurs specifically in sniffer c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00
CPCG01M5/0025G01M13/02
Inventor 斯蒂芬·梅布斯
Owner INFICON INC