双向活塞圆筒装置19 mm外径样品组装的压强和温度标定

程志康 张清 刘勋 吴也 黄海军

程志康, 张清, 刘勋, 吴也, 黄海军. 双向活塞圆筒装置19 mm外径样品组装的压强和温度标定[J]. 高压物理学报, 2022, 36(1): 013301. doi: 10.11858/gywlxb.20210802
引用本文: 程志康, 张清, 刘勋, 吴也, 黄海军. 双向活塞圆筒装置19 mm外径样品组装的压强和温度标定[J]. 高压物理学报, 2022, 36(1): 013301. doi: 10.11858/gywlxb.20210802
CHENG Zhikang, ZHANG Qing, LIU Xun, WU Ye, HUANG Haijun. Pressure and Temperature Calibrations of End-Loaded Piston-Cylinder 19 mm Outer Diameter Sample Assembly[J]. Chinese Journal of High Pressure Physics, 2022, 36(1): 013301. doi: 10.11858/gywlxb.20210802
Citation: CHENG Zhikang, ZHANG Qing, LIU Xun, WU Ye, HUANG Haijun. Pressure and Temperature Calibrations of End-Loaded Piston-Cylinder 19 mm Outer Diameter Sample Assembly[J]. Chinese Journal of High Pressure Physics, 2022, 36(1): 013301. doi: 10.11858/gywlxb.20210802

双向活塞圆筒装置19 mm外径样品组装的压强和温度标定

doi: 10.11858/gywlxb.20210802
基金项目: 国家自然科学基金(41602036)
详细信息
    作者简介:

    程志康(1998-),硕士研究生,主要从事高温高压凝聚态物理研究. E-mail:zhikangcheng@whut.edu.cn

    通讯作者:

    吴 也(1987-),博士,副教授,主要从事高温高压物理研究. E-mail:yew@whut.edu.cn

  • 中图分类号: O369

Pressure and Temperature Calibrations of End-Loaded Piston-Cylinder 19 mm Outer Diameter Sample Assembly

  • 摘要: 在高温高压实验中,样品所处位置的压强、温度及样品腔温度分布情况对实验结果分析十分重要,因此使用高温高压实验装置前需对所用组装进行压强和温度标定。针对双向活塞圆筒装置19 mm外径样品组装,进行了压强与温度标定。利用氯化钠(NaCl)在高压下的熔化曲线对压强进行标定,当下油缸油压出现大幅度下降时,样品腔内的NaCl发生熔化,将此时热电偶测量的温度与文献报道的NaCl在高压下的熔化曲线进行比较,确定样品腔内的实际压强。压强标定结果显示,实际压强与目标压强满足线性关系。采用双热电偶法对19 mm外径样品组装样品腔的中部和上部进行测温,发现样品腔中心温度高于样品腔上部温度,温度梯度随温度升高而增大,随压强升高而减小。在二次加压升温时,样品腔内的温度梯度高于第一次加压升温实验测量结果。所得压强和温度标定结果对今后使用19 mm外径样品组装开展高温高压实验研究具有参考价值和指导意义。

     

  • 图  19 mm外径样品组装的压强标定(a) 和温度标定(b) 的结构平面图

    Figure  1.  Schematic cross sections of 19 mm outer diameter sample assembly for pressure (a) and temperature (b) calibrations

    图  下油缸油压(pL)与实测温度(T)的关系

    Figure  2.  Relationship between oil pressure of lower cylinder (pL) and measured temperature (T)

    图  氯化钠压强标定实验结果

    Figure  3.  Results of sodium chloride pressurecalibration experiments

    图  实际压强(pR)与目标压强(pN)的关系

    Figure  4.  Relationship between the real pressure (pR) and the nominal pressure (pN)

    图  (a)样品腔上部温度(T1)和样品腔中心温度(T2);(b)样品腔中心与上部的温度差值(ΔT)(首次升压至目标压强的温度标定结果)

    Figure  5.  (a) Temperature above the sample chamber (T1) and temperature in the center of the sample chamber (T2); (b) temperature difference between the center and the upper part of the sample chamber (ΔT) (temperature calibration results of the first stage to the nominal pressure)

    图  样品腔中心与上部的温度差值(ΔT

    Figure  6.  Temperature difference between the center andthe upper part of the sample chamber (ΔT)

    表  1  压强标定实验方案

    Table  1.   Pressure calibration experiment scheme

    No.pN/GPapL/psipU/psiTN/℃t/min
    P11.51 6924 0781 20040
    P21.21 3543 2621 10040
    P30.91 0152 4471 05040
    下载: 导出CSV

    表  2  温度标定实验方案

    Table  2.   Temperature calibration experiment scheme

    pN/GPaTemperature/℃
    First programSecond programThird programFourth programFifth programSixth program
    1.52004006008001 0001 200
    1.22004006008001 0001 200
    0.92004006008001 0001 200
    下载: 导出CSV
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  • 收稿日期:  2021-05-24
  • 修回日期:  2021-06-11

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