The embodiment of the invention provides a steam turbine and a marine steam power propulsion device. The steam turbine comprises a steam cylinder, and a first rotating shaft and a second rotating shaft which penetrate through the steam cylinder, wherein the first rotating shaft rotatably and coaxially sleeves the second rotating shaft; and the first rotating shaft is provided with at least one rowof first rotating movable blades, the second rotating shaft is provided with at least one row of second rotating movable blades, and the first rotating movable blades and the second rotating movableblades are arranged in a staggered mode in the steam flowing direction so as to drive the first rotating shaft and the second rotating shaft to output opposite rotation correspondingly. According to the steam turbine, fixed blades in a traditional axial flow steam turbine are omitted, the movable blades rotating in opposite directions are adopted for replacement, the aerodynamic load of each stageis increased, the size of the steam turbine is greatly reduced, and meanwhile rotation in the opposite directions can be output. According to the marine steam power propulsion device, the two rotating shafts of the steam turbine output opposite rotation to directly drive oppositely-rotating propellers, a reversing gear box does not need to be arranged, and the size of a propulsion system is further reduced.
本发明实施例提供一种汽轮机及船用蒸汽动力推进装置,其中汽轮机包括汽缸以及贯穿汽缸的第一转轴和第二转轴,第一转轴可转动地同轴套接于第二转轴;第一转轴上设有至少一列第一旋转动叶,第二转轴上设有至少一列第二旋转动叶,第一旋转动叶和第二旋转动叶沿蒸汽流动的方向交错排列,以分别带动第一转轴和第二转轴输出相反的转动。该汽轮机通过取消传统轴流式汽轮机中的静叶,并采用反向旋转的动叶进行替代,提高了每一级的气动载荷,使得汽轮机体积大幅缩小,可以同时输出方向相反的转动。该船用蒸汽动力推进装置通过汽轮机的两个转轴输出相反的转动来直接驱动对转螺旋桨,无需设置换向齿轮箱,进一步缩小了推进系统体积。
Steam turbine and marine steam power propulsion device
汽轮机及船用蒸汽动力推进装置
2021-02-02
Patent
Electronic Resource
Chinese
Steam turbine propulsion for marine purposes
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