GAS TURBINE RING FASTENING DEVICE, ASSEMBLY COMPRISING TURBINE RING AND DEVICE FOR ITS FASTENING, TURBINE AND TURBOMOTOR Russian patent published in 2015 - IPC F01D11/24 F01D25/24 

FIELD: power engineering.

SUBSTANCE: gas turbine ring fastening device enclosing the moving blades impelled by a gas flow has inlet and outlet hooks. The inlet hook faces towards the turbine inlet and is located in the inlet groove of the ring open downstream. The outlet hook faces towards outlet exit and is located in the output groove of the ring open upstream. Between the inlet and outlet hooks a positive pressure cavity is located which is fed by cooling gas. Upstream the inlet hook the cooling gas supply devices for cooling of the inlet hook are located, and downstream the output hook - the cooling gas supply devices for cooling of the outlet hook are located. The cooling gas supply devices are designed with a possibility of cooling gas supply without passing through the named positive pressure cavity. One more invention of the group relates to the assembly consisting of the named above device and the turbine ring containing the inlet groove open downstream and the outlet groove open upstream. Inlet and/or outlet grooves have a curved contact surface for contact with the respective hook. Other inventions of the group relate to the turbine comprising the named above fastening device or the named assembly and also to the turbomotor comprising such turbine.

EFFECT: group of inventions allows to provide the constancy of the form of hooks irrespective of the turbine operating mode, and also to improve their reliability.

8 cl, 6 dwg