| 摘要 |
PROBLEM TO BE SOLVED: To provide a casing capable of suppressing leakage of a high pressure gas from a splitting surface, a turbo-machine equipped with the casing, and a compressor.SOLUTION: A casing 1 includes a trunk part 10a parallel with an axis CL and curving round the axis CL, a curved surface part 10b swelling out in the form of a curved surface from the end of the trunk part 10a in such a manner that the axis CL is positioned at the crest 10c, and a bearing 12 installed at the crest 10c of the curved surface part 10b, and also includes an upper casing and a lower casing split at the splitting surface including the axis CL, and at the splitting surface, a flange 4 is fastened by a plurality of flange bolts 5. The flange 4 has a straight line part 2a along the trunk part 10b, a curved line part 2b along the curved surface part 10b, and a near-the-crest part 2c located near the crest 10c, and the bolt spacing L2 in the curved line part 2b is wider than the bolt spacing L1 in the straight line part 2a and the bolt spacing L3 in the near-the-crest part 2c. |
