| 高压水分发生器的研制 |
| Development of high pressure moisture generator |
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| 中文摘要: |
| 对于高温高压下的湿度参数校准，尤其是温度高于100 ℃条件下的相对湿度或水汽含量校准、露点温度高于100 ℃的露点温度校准，目前我国仍缺乏有效的方法及装置。为解决此问题，研制了一套基于单温单压法原理的高压水分发生器。该发生器由饱和系统、气路系统、恒温系统与控制系统组成，其中饱和系统完成设定温度与压力下的水汽饱和；气路系统与恒温系统实现不同压力与温度条件下的气体传输；控制系统实现整体温度、压力精准控制，最终可产生体积分数为0.5% ～ 15%（对应露点温度范围为-2.8 ～ 110 ℃）的标准湿气，绝对压力范围为0.1 ～ 1 MPa，露点温度扩展不确定度为0.50 ～ 0.52 ℃（k = 2）。该高压水分发生器具有稳定时间短、准确度高、操作方便、实用性强等优点，可作为高温高压条件下的校准湿度源，具有重要技术应用价值。 |
| 英文摘要: |
| At present, there is still a lack of effective methods and devices for the calibration of humidity parameters under high temperature and pressure in China, especially for the calibration of relative humidity or water vapor content under conditions of temperature above 100 ℃, and for the calibration of dew point temperature above 100 ℃. To address this issue, a high?pressure moisture generator based on the principle of single temperature and single pressure method has been developed. The generator consists of a saturation system, an air circuit system, a constant temperature system, and a control system. The saturation system completes water vapor saturation at the set temperature and pressure; The air circuit system and constant temperature system achieve gas transmission under different pressure and temperature conditions; The control system achieves precise control of overall temperature and pressure. The standard moisture with a volume fraction of 0.5% to 15% (corresponding to a dew point temperature range of -2.8 to 110 ℃) can be ultimately produced, with an absolute pressure range from 0.1 to 1 MPa, and an expanded uncertainty from 0.50 to 0.52 ℃ (k = 2) for dew point temperature. The high?pressure moisture generator has the advantages of short stability time, high accuracy, convenient operation, and strong practicality. It can be used as a calibration humidity source under high?temperature and high?pressure conditions, and has important technical application value. |
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| 中文关键词: 高温高压 湿度校准 高压水分发生器 |
| 英文关键词:high temperature and high pressure humidity calibration high pressure moisture generator |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2023.05.09 |
| 引用本文：陈洁新, 胡艳青, 柴塬, 李心怡, 孟苏, 吕国义.高压水分发生器的研制[J].计测技术,2023,(5):. |
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