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TURBINES]
99
HYDRAULICS


on entering the case distributes itself through a rectangular ' in equal proportions from each guide-blade passage. It consists supply chamber SC, from which it linds its way equally to the of a centre plate p (ig. 189) keyed on the shaft aa, which passes four guide»blade passages G, G, G, G. In these passages it through stufhng boxes on the suction pipes. On each side ot

acquires a. velocity about equal to tnat due to half the fall, and is ' the centre plate are the curved wheel vanes, on which th- pressure directed into the wheel at an angle of about 10° or 12° with the of the water acts, and the Vanes are bounded on each side by

tangent to its circumference. The wheel W receives the water l dished or conical cover plates c, c. Joint-rings j, j on the cover