TURBO-MACHINE STATOR AND METHOD OF ITS ASSEMBLY/DISASSEMBLY Russian patent published in 2008 - IPC F01D9/04 F01D25/24 

FIELD: engines and pumps.

SUBSTANCE: turbo-machine stator incorporates a housing and guiding vanes fitted in appropriate housing grooves by means of distributor roots made up of angular segments. Guiding vanes alternate with the rotor vanes. The stator casing is made up of annular casings, each furnished with joint flange. The grooves have the first slot on one side and guide pins and the second slot on the other side furnished with the axial expansion spring and partially closed by a radial bulge with the slot receiving the curvilinear hooks of the guiding vane angular segments. The method of mounting the aforesaid stator consists in that, first, the casings are arranged separately around the rotor. Then, the guiding vane angular segments are fitted radially in between the casings to be moved axially into contact with the housing. The aforesaid angular segments fitted into the distributor guiding vanes slots, they are immediately coupled. The method of disassembly of the aforesaid stator consists in the following. First, the said casings are uncoupled and separated by axially moving them in the housing and the distributor angular segment guiding vanes are withdrawn from the grooves. Then, they are moved radially between the casings.

EFFECT: simpler assembly and disassembly of low-pressure turbo-compressor stator, ruling out using clamping tools in assembly and disassembly.

6 cl, 5 dwg