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Hydromechanics with suction elbow located above

A technology of hydraulic machinery and pipe bending, which is applied in the field of hydraulic machinery, can solve problems such as large safety risks, and achieve the effect of improving service life

Active Publication Date: 2016-11-16
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, opening the closure mechanisms on the high pressure side, such as guides, ring gates, ball valves, etc., while keeping the closure mechanisms on the discharge side closed at the same time represents a significant safety risk

Method used

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  • Hydromechanics with suction elbow located above
  • Hydromechanics with suction elbow located above

Examples

Experimental program
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Embodiment Construction

[0020] figure 1 Shows a side view of a pump turbine 10 according to the invention of the Franciscan design type, which has: an impeller 20 (not visible), which is rotatably mounted about an axis of rotation R; and an inlet screw 30 which further The flow spiral surrounds the impeller 20 annularly; and has a suction elbow 50 above the impeller 20 . In such a pump turbine 10 , water flows into the impeller 20 radially relative to the axis of rotation R from an outflow opening located in the inner peripheral direction of the inflow spiral 30 . In the impeller 20 , the water is deflected upwards in the direction of the axis of rotation R while outputting its energy, during which the impeller 20 is set in rotation. Finally, the water is delivered via a suction elbow 50 to a suction pipe (not shown) connected to the suction elbow.

[0021] During the transition from phase-shifted operation to pump operation or turbine operation it is necessary to fill the drained impeller. Usuall...

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PUM

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Abstract

The invention relates to a hydrodynamic machine comprising a turbine or a pump turbine, having an impeller mounted rotatably about a vertical axis of rotation and having a plurality of blades; an inlet spiral which surrounds the impeller annularly and feeds On its inner circumferential ring, the spiral has a surrounding outflow opening; a guide and / or closing device for regulating the inflow into the impeller; and a suction elbow for guiding the water flowing out of the impeller. The suction elbow is arranged above the impeller. At least one bypass line can be provided for bypassing the guide and / or closing device, which connects the inlet spiral directly to the impeller when a bypass valve arranged in the course of the bypass line is open. Furthermore, at least one emptying line can be provided for emptying the impeller, which connects the impeller directly to the pump shaft when an emptying valve arranged in the course of the emptying line is opened. The invention also relates to a method for filling and emptying such a machine and its preferred use.

Description

technical field [0001] The invention relates to a hydrodynamic machine, in particular a pump turbine, according to the preamble of claim 1 or 2 . The invention also relates to a method according to claim 6 or 7 for filling or emptying such a machine and its preferred use according to claim 9 . Background technique [0002] Pump turbines used in hydropower plants have two modes of operation, turbine operation and pump operation. In the latter case, the pump pumps water from the lower tank into the upper tank and for this is driven by an electric machine, which is drive-connected to the pump. In this case, the electric machine is fed from the public power grid, that is to say supplied with electrical power. Conversely, in turbine operation, the water flowing from the upper tank via the turbine into the lower tank drives the turbine, which transmits the corresponding power to the electric machine. The electric machine converts the drive power into electrical power and feeds ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/10F03B13/06F03B13/08F03B15/00
CPCF03B3/103F03B13/06F03B13/08F03B15/005F05B2240/13F05B2250/30F05B2250/502F05B2260/64Y02P90/50Y02E10/20Y02E60/16F01D17/10
Inventor 马丁·沙巴塞尔
Owner VOITH PATENT GMBH