SYSTEM FOR AXIAL FIXATION OF WORKING BLADES IN ROTOR, PACKING ELEMENT FOR SUCH SYSTEM, AND ALSO IMPLEMENTATION OF THIS SYSTEM Russian patent published in 2011 - IPC F01D5/30 

FIELD: machine building.

SUBSTANCE: system of axial fixation of working blades in rotor consists of collar whereon there are made slots holding working blades and lug on face side of collar surface. A circular groove, open in radial direction outside, is made on the collar. Packing elements inserted into the circular groove and forming a packing ring on a face side are designed for axial fixation of blades. To fix packing elements against shift in radial direction at least one of the packing elements has a strip out of a steel sheet secured on the element; the strip along its length has a L-shape. The first in circumferential direction arm of the steel sheet strip is fixed on the packing element, while its second arm coming inside in a radial direction enters a locking recess made in a collar zone. Another invention of the group refers to the packing element made out of a steel sheet with a strip of a steel sheet made on the packing element; also, the strip passes through two slits made in the packing element and has a L-shape along its length. The first, passing in circumferential direction arm of the steel sheet strip is fastened on the packing element, while the second one passes in radial direction inside. The next invention of the group refers to implementation of the above said system of axial fixation of working blades or above said packing element for fixation of working blades of a gas turbine with axial flow.

EFFECT: reliable fixation of working blades, simplification of assembly and disassembly of packing elements on rotor and increased service life of fasteners.

16 cl, 4 dwg