Valve torque measuring device based on strain gauge

Qi-rong Zhu; Fan Ni; Guo-biao Yang; Bin Li

doi:10.1117/12.885230

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28 December 2010 Valve torque measuring device based on strain gauge

Qi-rong Zhu, Fan Ni, Guo-biao Yang, Bin Li

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Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75441T (2010) https://doi.org/10.1117/12.885230
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

Start-stop torque is one of the key parameters of valve's capacity. In China, a torque spanner is used to measure the small-bore torque, but the accuracy is not very high. In the large-bore situation, the previous method can not be used to measure the torque, so the torque is determined by the design calculation result. Sometimes this result is far from the practical one, and the difference will impact the apolegamy of the actuating device of a valve. Some other methods, such as inductance type transducer valve torque sensor, strain gauge valve torque sensor, appeared. They both have the advantage of high accuracy, but their automatic level is low and their measuring equipments are complex. In this paper, a new style torque measuring device which is based on theory of mechanics of materials and measuring principle of strain gauge is designed. The maximal torque is 2000Nm. The measuring device is easy for installation, accurate on results, and is able to meet the actually online measuring demands.

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Qi-rong Zhu, Fan Ni, Guo-biao Yang, and Bin Li "Valve torque measuring device based on strain gauge", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441T (28 December 2010); https://doi.org/10.1117/12.885230

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