| 正压法音速喷嘴气体流量标准装置压力调节改造 |
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| 引用本文： | 白银.正压法音速喷嘴气体流量标准装置压力调节改造[J].航空计测技术,2012(2):40-42. |
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| 作者姓名： | 白银 |
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| 作者单位： | 中航工业北京长城计量测试技术研究所,北京100095 |
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| 摘 要： | 正压法音速喷嘴气体流量标准装置由于能提供尽量接近使用工况的校准条件，近年得到了广泛的应用。但由于其前端采用空压机供气，系统压力不易控制。本文提供了一种解决系统压力波动和控制系统压力的方法。该方法采用稳压装置前加带反馈的流量调节阀。改造后系统压力可以得到很好的控制。
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| 关 键 词： | 正压法 音速喷嘴 压力控制 |
Pressure Control of Positive Pressure Gas Flow Calibration Facility by Means of Critical Venturi Nozzle |
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| BAI Yin.Pressure Control of Positive Pressure Gas Flow Calibration Facility by Means of Critical Venturi Nozzle[J].Aviation Metrology & Measurement Technology,2012(2):40-42. |
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| Authors: | BAI Yin |
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| Institution: | BAI Yin (Changcheng Institute of Metrology ＆ Measurement, Beijing 100095, China) |
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| Abstract: | Positive pressure gas flow calibration facility by means of critical venturi nozzle is widely used recently because it provides a calibration condition which is close to user＇s work condition. But the system pressure is hard to control since the gas is provided by an air pump. This article provides a method using a valve with feedback before gas container to control the system pressure and the pressure fluctuation. |
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| Keywords: | positive pressure critical venturi nozzle pressure control |
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