Method of and device for measuring the blade clearance of therma

Details Method of and device for measuring the blade clearance of therma Method of and device for measuring the blade clearance of therma

1995-11-03

1997-07-22

Fulton, Christopher W.

Geometrical instruments

Gauge

Collocating

33833, 335421, G01B 514

Patent

active

056493690

ABSTRACT:
In a device for measuring the radial blade clearance between the moving-blade tips (6) and the blade carrier (4) of thermal turbomachines with the use of a measuring needle (7) which is guided along in an opening (16) in the blade carrier (4), is accommodated by the blade carrier (4) in a seat (8), projects radially opposite the moving-blade tips (6) into the flow duct (17) and can be abraded, the measuring needle (7), at its end remaining in the blade carrier (4), is fastened to a flexible guide part (10) projecting from the machine, the other end of the guide part (10) being connected to components (11), for example a screwed socket or a hydraulic cylinder. The components (11) permit a linear movement of the guide part (10), which is surrounded outside the outer casing (5) by a flexible tube (12), and between outer casing (5) and blade carrier (4) by a rigid guide tube (14). The device is especially suitable for measuring the transient blade clearance.

REFERENCES:
patent: 1639494 (1927-08-01), Flanders
patent: 2164339 (1939-07-01), Morgan
patent: 3849893 (1974-11-01), Ormsby
patent: 3932941 (1976-01-01), Ormsby
patent: 4395827 (1983-08-01), Stowe et al.
patent: 4495810 (1985-01-01), Tessarzik et al.
patent: 4928400 (1990-05-01), Schuh
patent: 5125165 (1992-06-01), Gerhard
patent: 5144753 (1992-09-01), Murphy

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