[1]钱钟韩.高压蒸汽的数学模型及其在流量测量中的应用[J].东南大学学报(自然科学版),1979,9(3):86-102.[doi:10.3969/j.issn.1001-0505.1979.03.008]
 Qian Zhong-Han.A Mathematical Model of High-Pressure Steam and its Applications in Flow Measurement[J].Journal of Southeast University (Natural Science Edition),1979,9(3):86-102.[doi:10.3969/j.issn.1001-0505.1979.03.008]
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高压蒸汽的数学模型及其在流量测量中的应用()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
9
期数:
1979年第3期
页码:
86-102
栏目:
本刊信息
出版日期:
1979-09-20

文章信息/Info

Title:
A Mathematical Model of High-Pressure Steam and its Applications in Flow Measurement
作者:
钱钟韩
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Author(s):
Qian Zhong-Han
关键词:
高压蒸汽 数学模型 流量测量 在线计算 简化公式 膨胀系数 近似式 理想气体 经验公式 主蒸汽流量
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1979.03.008
摘要:
本文分析了高压蒸汽的主要特点,提出了适用于高压过热蒸汽(20—230at)的一系列近似状态方程式,包括一个适用于全部工作范围的半理论公式,和两种适用于在线计算的简化公式。这些公式与现代蒸汽表数据符合较好,其精度比过去流行的一些经验公式好得多。本文还对动力厂主蒸汽流量的测量问题进行了研究,包括标准节流件的膨胀系数的校正问题,和利用汽轮机调节级后的压力来估计流量的问题。作者提出了新的处理方法,从而得到了高度简化的计算公式,为蒸汽流量的在线计算提供了基础。
Abstract:
In this paper the main characteristics of high-pressure steam as compared with an ideal gas are discussed, and a serics of approximate equations of state are derived for high-pressure steam, including a semi-rational equation valid for the whole range and two simplified forms suitable for on-line calculations of steam flow. Their accuracy is far better than the older formulas still in use. The following problems in the measurement of steam flow in a power plant are also analyzed: the correction factor for compressibility of gas in standard orifices and nozzles; and a new formula for estimating the steam flow thru a turbine in terms of the pressure after the variable-admission stage. New lines of approach result in highly simplified formulas, to be used in on-line calculations.

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更新日期/Last Update: 2013-05-01