Being the variable angular stator blade assembly body which is used the hole (44) the compressor casing which

摘要

PROBLEM TO BE SOLVED: To replace and displace parts liable to wear without the disassembly of a casing and the removal of a stator blade by providing a first bush having an outer end part and a flange removably fixed into a boss hole, and a second bush having a support part coming in contact with the outer end part of the first bush, under the outer end part. ;SOLUTION: A plurality of holes 44 with counterbores 48 for receiving the base parts of stator blades 40 are provided in the circumferential direction of a casing 42. A metallic first bush 62 having a flange 66 at the outer end is disposed in a boss hole 46. A second bush 64 made of compound material with the outer end coming in contact with the outer end of the first bush 62 so as to support radial thrust load is disposed at the first bush 62. The stator blade 40 is provided with spindles 54, 56 rotatable in both bushes 62, 64, and these spindles 54, 56 are connected to an outward protruded lever 96 for turning the stator blade 40. In order to replace and displace the bushes, the lever 98 is removed, then a fixing bolt of the first bush 62 is removed, and the first and second bushes 62, 64 are pulled out of the hole 44 and the spindles 54, 56.;COPYRIGHT: (C)1997,JPO