GB196254A - Runner for turbines and pumps - Google Patents

Abstract

196,254. Moody, L. F. April 15, 1922, [Convention date], Impeller blades, regulating.-The runner of an hydraulic turbine or pump, Fig. 1, comprises a supporting element 18 with flanges 20, 21, to which are secured the cast-iron runner sections 22 carrying each a blade 16, these sections being separately removable, and fitting together to form the runner hub. A support 28 is provided for the lower end of the shaft 17 for use during dismantling or repair of the thrust bearing. The blades 16 may be generated by substantially straight line elements extending in an axial-radial direction, the tips being unshrouded. In a modification, the blades overlap at their inner ends as viewed in axial projection. The Specification, as open to inspection under Sect. 91 (3) (a), comprises also the following subject-matter. The detachable runner blades 51, Fig. 4 (Cancelled), have spindles 55 which may be rotated in the hub 52 and secured at the desired blade angle by means of set screws 56. In a modification, Fig. 8 (Cancelled), the blades have discs 72 which are held in adjusted positions in the hub recesses 71 by bolts 75 passing through slots 76 in the discs. Alternatively the blade discs 81, Figs. 11 and 13 (Cancelled), may be clamped in position by a ring 80 formed in separate halves. Figs. 14 and 15 (Cancelled) show the blade discs 88 adjustably secured in hub recesses 87, and held there by a ring 90, a series of segmental plates 02, and a cap 93. A small test turbine may be equipped with adjustable runner blades for experimental purposes. This subject-matter does not appear in the Specification as accepted.