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Low-head efficient shaft-extension tubular pump turbine and blades thereof

A pump-turbine, tubular technology, applied in the field of low-head high-efficiency shaft-extension tubular pump-turbine pump-turbine

Active Publication Date: 2013-07-17
重庆航运建设发展(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a low-head shaft-extension tubular pump-turbine to solve the problem that the two water flow directions of the pump-turbine power generation and pumping conditions are opposite. Efficiency of two operating conditions

Method used

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  • Low-head efficient shaft-extension tubular pump turbine and blades thereof
  • Low-head efficient shaft-extension tubular pump turbine and blades thereof
  • Low-head efficient shaft-extension tubular pump turbine and blades thereof

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Effect test

Embodiment

[0033] In this embodiment, a low water head shaft extension tubular water pump turbine blade, such as Figure 3~7 As shown, the shape of the blade is thick in the middle and thin on both sides, and it is a three-dimensional distorted surface in space. The connected curves are combined, and the coordinate system is established with the center point of each type line of the three sections as the origin, x 1、 x 2、 x 3 is the abscissa of each coordinate, y 1 、y 2 、y 3 is the vertical coordinate of each coordinate, and F1, F2, and F3 respectively represent three molded lines, then the position of the part point of the blade in the Cartesian coordinate system is shown in the following table:

[0034] Numbering 101 102 103 104 105 106 107 108 109 F1 on_X1 -59.552 -50.0 -40.0 -20.0 0.0 20.0 30.896 40.0 52.836 F1 on_Y1 16.119 15.821 14.627 9.851 1.642 -6.119 -9.851 -12.090 -14.776 Numbering 109 ...

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Abstract

The invention relates to a low-head shaft-extension tubular pump turbine and blades thereof, and belongs to the technical field of energy power. The low-head shaft-extension tubular pump turbine comprises a pump turbine body, a reversible motor, a flow channel and a flow guide mechanism, the flow channel comprises a water inlet section flow channel, a guide blade section flow channel, a runner chamber and an S-shaped exhaust water pipe flow channel which are sequentially communicated, a runner is in transmission connection with the reversible motor through a spindle, the flow guide mechanism is arranged on the other side of the runner, the runner comprises a runner boss and a runner cone, the blades are circumferentially and uniformly arranged on the runner boss, the middle of each blade is thick while two sides of each blade are thin, each blade is in the shape of a three-dimensional warped surface, and spatial characteristics of each blade are indicated by an upper section, a middle section and a lower section. The operation conditions of power generation by a turbine and water pumping by a pump can be simultaneously met and are opposite in water flow direction, namely, the same runner needs to simultaneously meet the double requirements of water pumping and power generation, the efficiency of the two operation conditions can be simultaneously considered, and the low-head shaft-extension tubular pump turbine is applicable to a low-head pumped storage power station.

Description

technical field [0001] The invention relates to a low-head, high-efficiency shaft-extension tubular pump-turbine used in a pumped-storage power station with a low head. The pump-turbine belongs to the field of fluid machinery and engineering equipment. Background technique [0002] Since the reform and opening up, with the rapid development of my country's economic construction and the continuous improvement of people's living standards, the power supply has become increasingly tense, and the peak-to-valley difference has gradually increased. Based on the requirements of ensuring the safety and effective operation of the power grid, the pumped storage power station, as a power station with special characteristics: peak-shaving and valley-filling, frequency regulation, voltage regulation, emergency backup, black start and other functions, will be the strategic focus of my country's power grid development. The working method of the pumped storage power station is to use the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B3/12F03B13/00F03B3/06F03B3/18E02B9/04
CPCY02E10/20
Inventor 葛新峰郑源罗欣钱瑭吴在强
Owner 重庆航运建设发展(集团)有限公司
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