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表 1 不同密度的油料测量结果
Table 1 Oil measurement results of different density
油料 斜率 反射系数 声阻抗/ 声速/ 测量密度/ 参考密度/ 绝对误差/ 相对误差/
名称 K R (kg·m −2 ·s −1 ) (m·s −1 ) (g·cm −3 ) (g·cm −3 ) (g·cm −3 ) %
90 # 汽油 −0.2389 0.9549 0.929 1241 0.7489 0.7421 0.0068 0.92
90 # 汽油 −0.2372 0.9608 0.897 1226 0.7314 0.7397 −0.0083 −1.12
3 # 喷气燃料 −0.2420 0.9562 1.005 1287 0.7812 0.7874 −0.0062 −0.78
3 # 喷气燃料 −0.2429 0.9553 1.026 1298 0.7901 0.7932 −0.0031 −0.39
0 # 柴油 −0.2472 0.9513 1.120 1361 0.8235 0.8195 0.004 0.49
0 # 柴油 −0.2472 0.9512 1.121 1365 0.8214 0.8225 −0.0011 −0.13
0 # 柴油 −0.2479 0.9506 1.137 1372 0.8287 0.8230 0.0057 0.69
0 # 柴油 −0.2483 0.9502 1.145 1390 0.8238 0.8274 −0.0036 −0.44

0.84 extreme conditions[C]. 2013 Joint UFFC, EFTF and PFM
ᡔܦ฾᧚ࠛए [3] Higuti R T, Galindo B S, Marc L A P, et al. Thermal char-
Symposium, 2013: 168–169.
ᡔܦ฾᧚ࠛए/(gScm -3 ) 0.80 [4] 薛明华, 苏明旭, 蔡小舒. 超声波多次回波反射法测量两相流
ԠᏦࠛए
0.82
acterization of an ultrasonic measurement cell[C]. IMTC
2005-Instrumentation and Measurement Technology Con-
0.78
ference, 2005: 1643–1646.
0.76
Xue Minghua, Su Mingxu, Cai Xiaoshu. The experimental
0.74 密度实验研究 [J]. 工程热物理学报, 2008, 29(8): 1343–1346.
study on measurement of density of two phase flow with
0.74 0.76 0.78 0.80 0.82 0.84 ultrasonic multiple echo reflection method[J]. Journal of
ԠᏦࠛए/(gScm -3 )
Engineering Thermophysics, 2008, 29(8): 1343–1346.
图 8 超声测量结果与密度计结果比较 [5] Liu J X, Li G F, Xiong W Q, et al. An ultrasonic ap-
proach to measure the density of battery electrolyte[C].
Fig. 8 Comparison of ultrasonic measurement re-
2010 International Conference on Electrical and Control
sults with densitometer results
Engineering, 2010: 414–418.
[6] 熊文强, 刘佳鑫, 王志强, 等. 铅酸蓄电池超声波电解液密度
3 结论 测量方法 [J]. 仪表技术与传感器, 2011(5): 90–93.
Xiong Wenqiang, Liu Jiaxin, Wang Zhiqiang, et al.
本文利用超声波在不锈钢内的多次反射回波 Lead-acid battery electrolyte density ultrasonic mea-
计算出油料的声阻抗，并以超声波在聚苯乙烯和油 surement[J]. Instrument Technique and Sensor, 2011(5):
90–93.
料中传播的回波计算出油料的声速，通过对油料声
[7] Margaret S. Greenwood J A B. Ultrasonic sensor to mea-
阻抗和声速的测量计算出油料的密度。采用 5 MHz sure the density of a liquid or slurry during pipeline trans-
的超声探头测量 8 种油料的声速和声阻抗，测量结 port[J]. Ultrasonics, 2002, 40(8): 413–417.
果表明油料的声速随温度的增加近似线性的下降， [8] Wang H Q, Cao Y, Zhang Y G, et al. The design of the
ultrasonic liquid density measuring instrument[C]. 2011
密度测量结果最大误差为 1.2%，该方法可用于测量
Third International Conference on Measuring Technology
油料的密度。该方法能够同时测量油料的声阻抗和 and Mechatronics Automation, 2011: 758–760.
声速，测量不同类别的液体时不需要重新标定，具有 [9] Liu J X, Li G F. Frequency and temperature character-
结构简单、在线实时、快速准确及非侵入式测量的 istics of an ultrasonic method for measuring the specific
gravityof lead-acid battery electrolyte[J]. Japanese Jour-
特点，还可以动态监测油料的密度。 nal of Applied Physics, 2012, 51(2): 1–6.
[10] 李晓佳, 刘佳鑫, 李国锋. 超声波液体密度测量的一种声反射
参 考 文 献 系数测定方法 [J]. 传感技术学报, 2017, 30(7): 985–990.
Li Xiaojia, Liu Jiaxin, Li Guofeng. A method for mea-
[1] 唐得刚, 王海峰. 浅析油品密度在线检测的几种方法 [J]. 后勤 suring the acoustic reflection coefficient of liquid density
工程学院学报, 2004(4): 42–45. measurement by ultrasonic wave[J]. Chinese Journal of
Tang Degang, Wang Haifeng. An analysis of some meth- Sensors and Actuators, 2017, 30(7): 985–990.
ods for oil density on-line measurement[J]. Journal of Lo- [11] Hoche S, Hussen M A, Becker T. Density, ultrasound ve-
gistics Engineering College, 2004(4): 42–45. locity, acoustic impedance, reflection and absorption co-
[2] Rymantas Kažys, Reimondas Šliteris, Liudas Mažeika, et efficient determination of liquids via multiple reflection
al. Ultrasonic density measurement of polymer melts in method[J]. Ultrasonics, 2015, 57: 65–71.