F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 1/00 (2006.01) F01D 25/24 (2006.01) F16B 31/04 (2006.01)
Patent
CA 2322401
A casing of a hydraulic machine, such as a gas turbine, is formed as a horizontally split type flangeless casing consisting of an upper and lower casing fastened together by fastening bolts. The fastening bolts have a screw thread, which engages a threaded hole on the joint face of the lower casing. A bolt hole having an internal screw is provided in the upper casing. A sleeve is fitted into the bolt hole by engaging an external screw thread on the sleeve with the internal screw thread of the bolt hole. An enlarged diameter portion is formed on the fastening bolt and abuts an upper end face of the sleeve when the fastening bolt is screwed into the threaded hole in the lower casing. When the fastening bolt is tightened, the shaft tensile force of the bolt generates a fastening force, which presses the upper casing to the lower casing.
Gowling Lafleur Henderson Llp
Mitsubishi Heavy Industries Ltd.
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