|
|
|
| Compensation Method of Time System Difference of On-off Valve of pVTt Gas Flow Standard Device |
| LI Ning,XIANG De-hua,ZHOU Yan,ZHU Ning,CHEN Wei-jiao,XU Kuang-yu |
| Hunan Institute of Metrology and Test, Changsha, Hunan 410014, China |
|
|
|
|
Abstract Aiming at the problem that the switch valve in the pVTt gas flow standard device affects the measurement result of the nozzle outflow coefficient, the relationship between the flow area and the opening of the high vacuum butterfly valve and the high vacuum ball valve in the pVTt gas flow standard device is analyzed, and the formulas of the mass flow rate of the two valves with time are respectively derived; the best timing positions of the two valves are calculated ; design experiments have verified that the best timing points of the butterfly valve and ball valve used are located at the valve opening position of 4.5° and 2.5°, respectively.
|
|
Received: 10 March 2021
Published: 20 August 2021
|
|
|
|
|
|
［1］王伯年. pVTt装置参数的选择与确定［J］.仪器仪表学报, 2001, (2):143-145.
Wang B N. The selection and determination of pVTt device parameters［J］.Chinese Journal of Scientific Instrument,2001,(2):143-145.
［2］龚磊, 龚中字, 陈风华, 等.附加质量对pVTt法气体流量装置影响研究［J］.工业计量, 2015, 25(02):19-20.
Gong L,Gong Z Z,Chen F H, et al. Research on the influence of additional mass on pVTt method gas flow device［J］. Industrial Measurement,2015,25(02):19-20.
［2］曹培娟,李春辉,崔骊水,等. 高压pVTt法气体流量标准装置不确定度实现及验证［J］. 计量学报, 2017,38(6):697-701.
Cao P J, Li C H, Cui L S, et al. The Verification on the Capability of High Pressure pVTt Standard Facility
［J］. Acta Metrologica Sinica, 2017,38(6):697-701.
［3］刘若璇, 朱洺征, 沈昱明. 恒定壁温pVTt标准容器气体质量数值模拟与实验［J］. 计量学报, 2020,41(2):179-184.
Liu R X, Zhu M Z, Shen Y M. Numerical simulation and experiment of gas quality in a pVTt standard container with constant wall temperature［J］. Acta Metrologica Sinica, 2020, 41(2): 179-184.
［4］高山, 李春辉, 李小亭. 微小pVTt法气体流量标准装置的性能评估及验证［J］. 中国测试, 2019, 45(3):108-113.
Gao S, Li C H, Li X T. The performance evaluation and verification of micro pVTt gas flow standard facility［J］. China Measurement & Testing Technology, 2019, 45(3): 108-113.
［5］龚磊, 龚中字, 陈风华. 用pVTt法气体流量装置检定流量计［J］. 中国测试,2017,43(S1):101-105.
Gong L,Gong Z Z,Chen F H. Verification high accuracy gas flowmeter using pVTt gas flow facility［J］. China Measurement & Testing Technology, 2017,43(S1):101-105.
［6］JJG 619-2005 p.V.T.t法气体流量标准装置检定规程［S］. 2005.
［7］李立人, 王宽, 徐志斌. pVTt法气体流量装置中标定时间的确定［J］. 工业仪表与自动化装置, 2016, (6): 54-157.
Li L R, Wang K, Xu Z B. The determination of calibrated time for a gas flow calibration facility by the pVTt technique［J］. Industrial Instrumentation & Automation, 2016, (6): 54-157.
［8］刘辰魁, 李同波, 张红刚, 等. 低雷诺数下临界流文丘里喷嘴背压比测试［J］. 计量技术, 2008, (7):6-9.
［9］王东伟, 段慧明. pVTt法微小气体流量标准装置［J］. 现代计量测试, 2000, (3):37-42+56.
［10］龚磊, 龚中字, 陈风华, 等. pVTt法气体流量装置阀门系统时间特性研究［J］. 计量学报, 2016, 37(2): 148-150.
Gong L, Gong Z Z, Chen F H, et al. Research on System Time Character of Valve in pVTt Gas Flow Facility［J］. Acta Metrologica Sinica, 2016, 37(2):148-150.
［11］梁月, 刘智林, 冯倩倩, 等. 基于pVTt法气体流量标准装置高速切换三通阀的研制［J］. 工业计量, 2019, 29(2):39-41.
Liang Y, Liu Z L, Feng Q Q, et al. Development of high-speed switching three-way valve based on pVTt method gas flow standard device［J］. Industrial Measurement, 2019, 29(2):39-41.
［12］徐志鹏, 郭婧, 李澜吉, 等. pVTt用液压驱动快开三通阀设计与流场仿真［J］. 传感技术学报, 2019, 32(2):201-205.
Xu Z P, Guo J, Li L J, et al. Design and flow field simulation of a hydraulically powered fast-switching 3-way valve for pVTt［J］. Chinese Journal of Sensors And Actuators, 2019, 32(2): 201-205.
［13］史伟勤, 楼唯. 改进型气动高真空蝶阀的应用［J］. 干燥技术与设备, 2003, (1):42.
［14］梁鸿铭. 蝶阀调节范围的计算与分析［J］. 合肥工业大学学报, 1982, 1(1):84-95.
Liang H M. Calculation and analysis of the adjustment range of butterfly valve［J］. Journal of Hefei University of Technology,1982, 1(1):84-95
［15］王振华. 精确等百分比特性高性能密封蝶阀流量特性计算及其仿真分析［J］. 湖南工业职业技术学院学报, 2013,13(3):1-3.
Wang Z H. Calculation and simulation analysis of flow characteristics of high-performance sealing butterfly valve with precise equal percentage characteristics ［J］. Journal of Hunan Vocational and Technical College of Industry, 2013, 13(3): 1-3.
［16］张希恒, 孙丰位, 俞树荣, 等. V形调节球阀阀芯结构与等百分比流量特性分析［J］. 化工机械, 2012,39(5):598-601.
Zhang X H, Sun F W, Yu S R, et al. V-shaped regulating ball valve core structure and equal percentage flow characteristics analysis ［J］. Chemical Machinery, 2012, 39(5): 598-601.
［17］姚晓春. V形调节球阀的数值模拟及结构优化［D］. 兰州:兰州理工大学, 2009. |
|
|
|
2021, Vol. 42 
