Turbine rotor

Claim 2

A turbine rotor composed of a main shaft transmitting power generated at a turbine, a rotor disk for connecting turbine rotor blades to the main shaft, bucket covers each tying a plurality of rotor blades together as a unit so as to constitute blade groups, and vibration restraining devices each for linking the adjacent bucket covers at their adjacent ends through portions of the device frictionally engaging with the adjacent ends of the bucket covers, allowing the circumferential movement of said bucket covers and frictionally linking the adjacent blade groups together at their adjacent ends, wherein each of the vibration restraining devices for the turbine rotor blades is composed of a main body having grooves formed in both side faces of the main body for engaging with adjacent ends of adjacent bucket covers and having an aperture formed at the central portion of the main body which communicates with both of the grooves, and a pin inserted into the aperture and made to project a portion thereof into said grooves so as to be engaged with notches respectively formed at the ends of the bucket covers, the main body having at both ends portions adapted to be bent after the installation of said main body in order that the main body may be unable to slip out as accompanied with the axial movement thereof.

Claim 3

A turbine rotor composed of a main shaft transmitting power generated at a turbine, a rotor disk for connecting turbine rotor blades to the main shaft, bucket covers each tying a plurality of rotor blades together as a unit so as to constitute blade groups, and vibration restraining devices each for linking the adjacent bucket covers at their adjacent ends through portions of the device frictionally engaging with the adjacent ends of the bucket covers, allowing the circumferential movement of said bucket covers frictionally linking the adjacent blade groups together at their adjacent ends, wherein each of the vibration restraining devices for the turbine rotor blades is composed of a main body having grooves formed in both side faces of the main body for engaging with adjacent ends of adjacent bucket covers and having an aperture formed at the central portion of the main body which communicates with both of the grooves, and a pin inserted into the aperture and made to project a portion thereof into said grooves so as to be engaged with notches respectively formed at the ends of the bucket covers, the main body having at both ends portions adapted to be bent after the installation of the main body in order that the main body may be unable to slip out as accompanied with the axial movement thereof and shallow grooves disposed at both sides of the aperture so as to form portions to be caulked for holding down the pin.

Claim 4

A turbine rotor composed of a main shaft transmitting power generated at a turbine, a rotor disk for connecting turbine rotor blades to the main shaft, bucket covers each tying a plurality of rotor blades together as a unit so as to constitute blade groups, and vibration restraining devices each for linking the adjacent bucket covers at their adjacent ends through portions of the device frictionally engaging with the adjacent ends of the bucket covers, allowing the circumferential movement of said bucket covers frictionally linking the adjacent blade groups together at their adjacent ends, wherein each of the vibration restraining devices for the turbine rotor blades is composed of a main body having grooves formed in both side faces of the main body for engaging with adjacent ends of adjacent bucket covers and having an aperture formed at the central portion of the main body which communicates with both of the grooves, and a pin inserted into the aperture and made to project a portion thereof into said grooves so as to be engaged with notches respectively formed at the ends of the bucket covers, the main body having at both ends portions adapted to be bent after the installation of the main body in order that the main body may be unable to slip out as accompanied with the axial movement thereof and shallow grooves disposed at both sides of the aperture so as to form portions to be caulked for holding down the pin.

Claim 5

A turbine rotor according to claim 1, characterized in that each of the vibration restraining devices for the turbine rotor blades is held by the adjacent ends of the bucket covers each tying a plurality of rotor blades together as a unit so as to constitute blade grOups, and that each of the vibration restraining devices linking the blade groups adjacent to each other is made to have an oblique angle with respect to the axial direction.

Claim 6

A turbine rotor according to claim 2, characterized in that each of the vibration restraining devices for the turbine rotor blades is held by the adjacent ends of the bucket covers each tying a plurality of rotor blades together as a unit so as to constitute blade groups, and that each of the vibration restraining devices linking the blade groups adjacent to each other is made to have an oblique angle with respect to the axial direction.

Claim 7

A turbine rotor according to claim 1, wherein the frictionally engaging portion of the devices include means for restraining each vibration of the tangential axial first (T1), second (T2), and third (T3) order vibrations of the rotor and blade assembly.

Claim 8

A turbine rotor according to claim 2, wherein the frictionally engaging portion of the devices include means for restraining each vibration of the tangential axial first (T1), second (T2), and third (T3) order vibrations of the rotor and blade assembly.