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Water pump turbine device

A pump-turbine, water-turbine technology, applied in the directions of hydropower generation, mechanical equipment, engine components, etc., can solve the problems of poor cavitation characteristics and low efficiency, and achieve the effect of good efficiency

Active Publication Date: 2016-09-07
VOITH PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is the efficiency lower at part load, but the cavitation characteristics are also worse

Method used

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  • Water pump turbine device
  • Water pump turbine device
  • Water pump turbine device

Examples

Experimental program
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Embodiment Construction

[0043] figure 1 The structure of the shown pump-turbine device is as follows: the water turbine 1 has a water turbine impeller 1.1, including a plurality of working blades. The water turbine wheel 1 . 1 is embodied in a rotationally fixed manner together with the shaft 3 , the axis of rotation 7 of which is arranged rotatably. The water turbine impeller 1.1 is surrounded by the water turbine spiral housing 1.2. Furthermore, the rims of the rotor blades are attached upstream of the turbine wheel 1.1.

[0044] The water turbine 1 has a water turbine suction pipe 1.5. It is connected downstream of the working blades and includes an inlet diffuser with an elbow connected to the inlet diffuser and a pipe (Rohrleitung) connected to the elbow, which expands the water flow in the direction of flow Cross-section.

[0045] Here, the water pump 2 is directed towards the water turbine 1 . The latter means that two hydraulic machines are arranged axially adjacent without any electro-g...

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PUM

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Abstract

The invention relates to a water pump-turbine device, comprising: a water-turbine with a water-turbine impeller and a water-turbine helical casing; a water pump with a water-pump impeller and a water-pump helical casing; in a transmission connection with a shaft or capable of being brought into a transmission with the shaft A connected motor; a hydraulic short circuit can be established between the turbine and the water pump. The present invention is characterized by the following feature: the water turbine has a higher rated power than the water pump.

Description

technical field [0001] The invention relates to a water pump turbine device. Furthermore, the invention also relates to a method for operating a pump-turbine arrangement in the operating state of the water turbine. Background technique [0002] Among them, a Francis turbine or a Pelton turbine is considered as the turbine. In addition, both the water pump and the water turbine can be implemented as single-stage or multi-stage, so that a combination of a single-stage water turbine and a multi-stage water pump, or a combination of a multi-stage water turbine and a single-stage or multi-stage water pump can be considered. [0003] The pump-turbine device of the pumped-storage power station has two operating modes, that is, a water turbine operating state and a water pump operating state. In the latter operating state, the water pump pumps water from the lower cistern into the upper cistern and for this purpose is driven by an electric motor in transmission connection with the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B3/10F03B13/06
CPCF03B3/106F03B13/06Y02E10/20Y02E60/16F03B3/10
Inventor 曼弗雷德·施图默尔
Owner VOITH PATENT GMBH