Apparatus for regulating axial compressors

Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner

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F01D 1716

Patent

active

045589879

ABSTRACT:
This invention relates to an apparatus for regulating axial compressors by means of adjusting two rows of guide vanes, arranged successively in the flow direction, so that the flow will not become discontinuous until the maximum cut-off angle. The guide vanes are symmetrical about their longitudinal axes. The guide vanes of the second row occupy the spaces between the guide vanes of the first row. The nose ends of the second row of guide vanes always overlap the rear ends of the first row of guide vanes. The two rows of guide vanes are adjusted in tandem through an adjustment ring so that the angle of incidence to the flow of the first row is in a predetermined ratio to the angle of incidence of the second row. This ratio is the same as the ratio in length of levers connecting the first and second rows to the adjustment ring.

REFERENCES:
patent: 1462483 (1923-07-01), Carpenter
patent: 2733853 (1956-02-01), Trumpler
patent: 2933234 (1960-04-01), Neumann
patent: 3588270 (1971-06-01), Boelcs
patent: 4295784 (1981-10-01), Manning
NASA Report TND-3823 of Jan. 1967.
NASA Report CR-54534 PAW FR-2112 of Aug. 2, 1968.

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