DE429148C - Axially loaded water turbine with rigid and movable stator blades - Google Patents

Description

Axially loaded water turbine with rigid and movable stator blades. The invention relates to an axially loaded water turbine with rigid and movable Idler blades. According to the invention are the central axes of rotation of the rotating blades stored in the upper edge plane of the rigid stator blades, which makes it possible is the speed control of the axial turbine in a satisfactory manner to solve. Here, the part of the stator adjacent to the impeller has rigid blades, so that the angle of entry into the impeller always remains the same. Due to the special The bearing of the rotary vane axes of rotation is on the one hand in the horizontal rotary vane position the stator completely completed in a manner known per se, while in the Open position the downward facing half of the rotary blades in the diffuser protrudes and forms the same channels with the rigid blades, which by adjustment of the blades can be expanded or reduced at the same time (similar to the mode of action a throttle valve in a pipe), while at the same time lying above the axis of rotation Parts of the rotating blades also form inflow channels with one another. The order the axis of rotation in the center of the blade also has the advantage of being almost complete Relief of the blades.

In the drawing, an embodiment of the invention is shown in Fig. i shown in view, Fig. 2 in plan view and Fig. 3 in cross section.

The guide device, Fig. 2 in plan view (upper half of the rotating blades closed, lower half of the rotating blades removed), Figure 3 in cross section through the Middle, consists of a cast iron core a with radially and obliquely adjusted, rigid, flat guide ribs b made of wrought or cast iron and a number around one in Stuffing box bearings rotatable axes 7a movable rotating blades c, with these is the application or speed of the turbine is regulated and also a shut-off achieved.

The adjustment of the rotating blades is done by a partially with Teeth provided ring d, one gear sector e and only one on an axis of rotation externally mounted lever f (Fig. i and 2). This rotary blade adjustment device is arranged either on the outside of the turbine or on the inside of the cast iron core.

The impeller (Fig.3) consists of a wrought iron shaft g and from a cast iron core h with a number of wrought iron, inserted helically flat, firm blades il to i,;;, whereby the outlet cross-section narrows and an overpressure is created.

The loading takes place axially and similarly to a screw nut always the same entry angle. The headwater flows axially through the diffuser, presses vertically on the blades and thereby displaces it in a hollow cylinder encapsulated impeller in a rapidly rotating motion.

Both the diffuser and the impeller are each in a tubular, cast or wrought iron hollow cylinders k1 and k_ (Fig. i in the view and 3 in the Cross-section) - the latter can also be expanded and lengthened to a suction pipe - welded or cast or rotatably encapsulated; the former (k1) wears also the stuffing box bearings na for the rotary vane axles, and both are with each other connected by a flange l.

The rigid, obliquely arranged guide ribs b are also at the same time the supports of the diffuser core a and the stuffing box bearing for the turbine shaft G.

Claims (1)

PATENT CLAIM: Axially loaded water turbine finitely rigid and movable stator blades, characterized in that the central axes of rotation of the rotating blades in the upper edge plane of the rigid stator blades are.