| 摘要 |
<p>Radial-type hydraulic turbine comprising a turbine housing (1) with a runner (10) and with a water inlet to a water duct (6) having a decreasing flow cross-sectional area around the circumference for supplying water to the runner (10), as well as an axial water outlet (22) from the turbine housing (1). The turbine housing (1) comprises two substantially planar, parallel plate parts (2, 4) as delimitations in axial direction, whereby the plate parts (2, 4) are oriented to be normal to the turbine axis (10A). The opening (8) for water flow from the water duct (6) to the runner (10) has a smaller axial dimension than the spacing between the plate parts (2, 4). Between the plate parts (2, 4) there is provided an outer plate wall (3) formed by bending of an elongate, rectangular piece of sheet material, as a radial delimitation of the water duct (6) outwardly and with an at least approximate spiral shape as seen in the plane of the plate parts.</p> |
