DEVICE FOR STOPPING ROTATION OF VANE SECTORS OF STRAIGHTENING CASCADES BY STRAPS IN CONNECTING PLANES OF HOUSING AND TURBINE WITH SUCH DEVICE Russian patent published in 2007 - IPC F01D9/04 

FIELD: mechanical engineering; turbines.

SUBSTANCE: device for stopping rotation of at least one vane sector of straightening cascade containing support base of vanes is installed in sector of turbine housing. Sector of turbine housing contains at least two grooves made in places square to axis of turbine rotation into each which bead of base of straightening cascade vane sector fits. Two grooves arranged at one and the same end of sector of turbine housing in axial plane have slot, forming, together with corresponding groove, axial surface of sizes exceeding sizes of groove section. Rotation stopping device has also stop made for setting from one side into slots of one of grooves in axial direction, and from other side, into slot of other groove. After fitting opposite sector of housing in place and during operation of turbine, stop engages with opposite vane sector of straightening cascade preventing rotation of at least one vane sector. Said stop is made either in form of solid common unit with vane sector, or in form of strap with one end provided with longitudinal cutout for resilient mounting and holding in slots.

EFFECT: facilitated demounting of vane sectors of turbine owing to prevention of their turning in slot of sectors of turbine housing in operation.

11 cl, 14 dwg