Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1976-08-26
1978-02-14
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
416232, F01D 518
Patent
active
040735990
ABSTRACT:
An arrangement for closing selective areas of the tip portion of a hollow turbine blade having internal serpentine coolant passages is provided by radially extended wall portions at the tip of the blade along at least two sides of the outer ends of each two adjacent internal passages to be closed at the tip, retaining grooves provided in the facing surfaces of the extended wall portions, cover means overlie the outer ends of the selected adjacent passages and have opposite lateral edges received in the retaining grooves, and bond means secure the cover means along the lateral edges to the wall portions. The cover plate means preferably takes the form of two or more separable plates which can be independently inserted into the retaining grooves from an area on the tip portion of the blade which does not have the radially extended walls with retaining grooves therein.
REFERENCES:
patent: 3369792 (1968-02-01), Kraimer et al.
patent: 3574482 (1971-04-01), Savage et al.
patent: 3982851 (1976-09-01), Andersen et al.
Allen James M.
Szewczuk Thomas M.
Arenz E. C.
Powell Jr. Everette A.
Westinghouse Electric Corporation
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