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公开(公告)号:US06234749B1
公开(公告)日:2001-05-22
申请号:US09375631
申请日:1999-08-17
IPC分类号: F04D2908
CPC分类号: F01D11/122 , F04D29/083 , F04D29/162
摘要: A centrifugal compressor (1) including a single rotating shaft (5), a first (upstream) and second (downstream) impellers (2, 3) mounted on ends of the rotating shaft (5) respectively, and a casing (4) for accommodating these impellers. An air path (35) is provided for introducing an air pressurized by the upstream impeller (2) to the downstream impeller (3). An abradable layer (34) is embedded in the casing inner wall (4) such that it faces and is cut by the second downstream impeller (3). The expensive abradable layer (34) is only provided for the downstream impeller (3) since the effect of the abradable layer (34) is significant when provided for the downstream impeller.
摘要翻译: 一种离心压缩机(1),分别安装在旋转轴(5)的端部上的单个旋转轴(5),第一(上游)和第二(下游)叶轮(2,3),以及用于 容纳这些叶轮。 设置有用于将由上游叶轮(2)加压的空气引导到下游叶轮(3)的空气路径(35)。 可磨损层(34)嵌入壳体内壁(4)中,使其面对并被第二下游叶轮(3)切割。 只有为下游叶轮(3)提供昂贵的耐磨层(34),因为当为下游叶轮提供时,耐磨层(34)的作用是显着的。