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提出了一种汽轮机功率背压特性(即微增出力)的通用计算方法,该方法有两大特点:一是简单,只需知道低压排汽面积和排汽流量即可;二是精确,与运行或试验数据相比,误差仅在0.3%以内。具体介绍了计算方法的原理及分析各种假定可能引起的误差。
A general method for calculating the power backpressure (ie, slightly increased output) of steam turbines is proposed. The method has two major characteristics: first, it is simple, and only needs to know the area of low pressure steam exhaust and the flow rate of exhaust steam. Second, Compared to run or test data, the error is only within 0.3%. The principle of the calculation method is introduced in detail and the possible errors caused by various assumptions are analyzed.