Design of height measurement sensor for hydraulic support in fully mechanized working face

A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces. The height measurement sensor is equipped with a slender liquid tube, which is...

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Published inGong kuang zi dong hua = Industry and mine automation Vol. 50; no. 6; pp. 129 - 135
Main Authors GAO Siwei, GU Minyong, LI Dianpeng
Format Journal Article
LanguageChinese
Published Editorial Department of Industry and Mine Automation 01.06.2024
Subjects
bellows
density calibration
fully mechanized working face
height measurement sensor
hydraulic support
pressure sensor
temperature compensation
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Summary:A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces. The height measurement sensor is equipped with a slender liquid tube, which is filled with methyl silicone oil. Pressure sensors are installed at both ends of the height measuremenr sensor. By measuring the pressure at both ends of the sealed liquid tube, the height difference between the two ends of the height measuremenr sensor is obtained. Methyl silicone oil has obvious thermal expansion and contraction characteristics when the ambient temperature changes, which can cause a sharp change in pressure in a closed space and affect measurement precision. A compensation method is proposed. The method stores a portion of methyl silicone oil in a corrugated tube, and uses the elasticity of the corrugated tube itself to compensate for the volume change caused by thermal expansion and contraction of me
ISSN:1671-251X
DOI:10.13272/j.issn.1671-251x.2024010089