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综采工作面液压支架测高传感器设计
  • Title

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

  • 作者

    高思伟谷敏永李殿鹏

  • Author

    GAO Siwei;GU Minyong;LI Dianpeng

  • 单位

    北京天玛智控科技股份有限公司

  • Organization
    Beijing Tianma Intelligent Control Technology Co., Ltd.
  • 摘要
    针对综采工作面液压支架高度测量困难和可靠性、稳定性差等问题,设计了一种基于帕斯卡定律的液压支架测高传感器。该测高传感器内置一根细长液管,液管中充满甲基硅油,测高传感器两端安装压力传感器,通过测量密闭液管的两端压力,得到测高传感器两端位置的高度差。甲基硅油在环境温度变化时具有明显的热胀冷缩特性,会引起密闭空间内的压力急剧变化,影响测量精度,提出了一种补偿方法:采用波纹管存储一部分甲基硅油,利用波纹管自身的弹性补偿甲基硅油热胀冷缩造成的体积变化;并在软件中通过算法校准甲基硅油体积变化带来的密度变化,从而确保测高传感器的测量精度。试验结果表明:测高传感器可工作在0~40 ℃环境下,测量误差在4 cm以内。在薄煤层、中厚煤层综采工作面液压支架的现场应用结果表明:与人工测量结果相比,测高传感器的高度测量误差在5 cm以内,说明该传感器可靠性较高。
  • Abstract
    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 methyl silicone oil. The method calibrates the density change caused by the volume change of methyl silicone oil through algorithms in the software to ensure the measurement precision of the height measurement sensor. The test results show that the height measuremenr sensor can operate in an environment of 0-40 ℃, with a measurement error of less than 4 cm. The on-site application results of the hydraulic support in the fully mechanized working face of thin and medium thick coal seams show that compared with manual measurement results, the error of the height measurement sensor is within 5 cm, indicating high reliability of the sensor.
  • 关键词

    综采工作面液压支架测高传感器压力传感器波纹管温度补偿密度校准

  • KeyWords

    fully mechanized working face;hydraulic support;height measurement sensor;pressure sensor;bellows;temperature compensation;density calibration

  • 基金项目(Foundation)
    国家重点研发计划资助项目(2023YFB3211005)。
  • DOI
  • 引用格式
    高思伟,谷敏永,李殿鹏. 综采工作面液压支架测高传感器设计[J]. 工矿自动化,2024,50(6):129-135.
  • Citation
    GAO Siwei, GU Minyong, LI Dianpeng. Design of height measurement sensor for hydraulic support in fully mechanized working face[J]. Journal of Mine Automation,2024,50(6):129-135.
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  • 图表
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    • 测高传感器原理

    图(6) / 表(6)

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