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一、前言世界最长的3000转/分火电汽轮机用40时叶片,最近(1979年)已由日本三菱重工业公司研制成功。这种40时叶片与原有的3000转/分33.5时叶片相比,排汽环形面积增大了30%,该叶片的排汽环形面积也是世界最大的。40时叶片的研制成功使得在保持与33.5时叶片同等的高效率的同时在汽缸数相同的情况下可提高约30%的功率。采用单轴双排汽的形式可设计制造出达到60万千瓦
First, the foreword The world’s longest 3000 rev / min thermal turbine with 40 blades, the most recent (1979) has been successfully developed by Japan’s Mitsubishi Heavy Industries. Compared with the original 3000 rpm 33.5 blades, this 40-hour blade has an increased exhaust annulus area of 30%, and the blade’s exhaust annular area is also the largest in the world. The successful development of the blades at 40 makes it possible to increase the power by about 30% while maintaining the same high efficiency as that at 33.5 blades with the same number of cylinders. The use of single-axis double-row steam can be designed to produce up to 600,000 kilowatts