论文部分内容阅读
我们在实际工程设计中,寻求某种泵型,使它既满足枯水期生产用水的水量及水压要求,又可适应洪水期江河水位,水量变化的特点,为此要做好下面几点: 1.摸清工艺设备冬夏用水量的变化情况由于江河受大自然的影响,冬夏季节水温变化差异甚大。如长江重庆段元月份历年平均水温10.9℃,到了夏季七月份则为25℃。而工艺设备的冷却用水量恰与水温关系甚大,如某电厂,汽轮机的凝汽器每小时蒸汽
In the actual engineering design, we seek for a certain type of pump, so that it not only meets the water quantity and water pressure requirements of the production water during the dry season, but also adapts to the characteristics of the water level and water volume during the flood period. To do this, we must make the following points: 1 Investigating changes in water consumption in winter and summer technology equipment As rivers and rivers are affected by nature, water temperature changes in winter and summer are very different. For example, in the Yangtze River Chongqing, the average annual water temperature was 10.9°C during the month of January and 25°C during the summer months. However, the cooling water consumption of process equipment is closely related to the water temperature. For example, in a power plant, the condenser of a steam turbine is steamed every hour.