Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received by continuous circumferential channel
Patent
1976-12-27
1978-06-13
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received by continuous circumferential channel
416220R, 416248, 416193A, 416241B, F01D 530
Patent
active
040946150
ABSTRACT:
Improved attachment structure for connecting ceramic blades to the rotor disk of a gas turbine rotor. The structure includes a plurality of metallic attachment pieces having roots inserted into respective grooves in the outer periphery of the rotor disk. Each attachment piece has an outer peripheral groove for receiving the root of a corresponding turbine blade formed of ceramic material. Specific embodiments of an attachment piece and a blade are disclosed, the blade having a base which engages the outer peripheral face of the corresponding attachment piece. The blade base and the corresponding attachment piece have aligned, spaced grooves at the opposed ends thereof for receiving ceramic plates which cover the adjacent parts of the attachment piece. Certain ends of the ceramic plates define recesses for receiving metallic plates which extend radially of the rotor disk and transmit torque from the blade to the attachment piece and thereby to the rotor disk.
REFERENCES:
patent: 1362074 (1920-12-01), Baumann
patent: 2873947 (1959-02-01), Perry
patent: 2916257 (1959-12-01), Poellmitz et al.
patent: 3137478 (1964-06-01), Farrell
patent: 3501249 (1970-03-01), Scalzo et al.
Electric Power Research Institute Inc.
Powell Jr. Everette A.
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