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该文研究了国产６００ Ｍ Ｗ 直流锅炉水冷壁内螺纹管在超临界压力下的摩擦阻力特性。试验段为２８ ×５ ．４１ｍ ｍ 的四头１２ Ｃｒ１ Ｍｏ Ｖ 内螺纹管，试验参数为压力 Ｐ＝ ２３ ～２７ Ｍ Ｐａ ，质量流速 Ｇ＝ ６００ ～１８００ｋｇ／ｍ ２·ｓ，工质焓ｈ ＝ ６００ ～２６００ｋ Ｊ／ｋｇ ，雷诺数 Ｒｅ ＝ ５ ×１０４ ～１ ×１０６ 。通过试验，得到了内螺纹管的摩擦阻力系数及其随压力、质量流速、工质焓和雷诺数变化的规律。根据试验数据，总结出了超临界压力下内螺纹管的摩擦阻力系数经验关系式。为锅炉的设计和运行提供了可靠的依据。图８ 表１ 参３
In this paper, the frictional resistance characteristics of the internally threaded tube of a water-cooled wall of a domestic 600 MW boiler are investigated under supercritical pressure. The test section is 28 × 5. 41 m m of four 12 Cr1 Mo V female threaded tube, the test parameters of pressure P = 23 ~ 27 M Pa, mass flow rate G = 600 ~ 1800kg / m 2 · s, enthalpy of the working fluid h = 600 ~ 2600k J / kg, Reynolds number Re = 5 × 104 ~ 1 × 106. Through the test, the frictional resistance coefficient and the law of the variation with the pressure, the mass flow rate, the enthalpy of the working medium and the Reynolds number are obtained. Based on the experimental data, the empirical relationship of the frictional resistance coefficient of the internally threaded pipe under supercritical pressure is summarized. For the boiler design and operation provides a reliable basis. Figure 8 Table 1 reference 3