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Energy conversion hydraulic plant and method for controlling such plant

An energy conversion and equipment technology, applied in pump control, mechanical equipment, hydropower and other directions, it can solve the problems of inconsistent shape and flow direction, incomplete filling of the guide, separation of the surface of the guide, etc., to achieve optimal performance, Improves stability and reduces fluid loss

Inactive Publication Date: 2010-12-08
GE RENEWABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this reduces the efficiency of the device
[0004] Furthermore, in equipment with a downstream flow channel—sometimes referred to as a "suctioner" because of its shape and direction of flow—it sometimes happens that the forced flow does not completely fill the Separation of the flow relative to the surface of the channel

Method used

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  • Energy conversion hydraulic plant and method for controlling such plant
  • Energy conversion hydraulic plant and method for controlling such plant
  • Energy conversion hydraulic plant and method for controlling such plant

Examples

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Embodiment Construction

[0029] Figures 1 to 3 The plant I shown has a Francie-type turbine 1 whose wheel 2 is intended to be driven in rotation by a forced flow E from a reservoir not shown. The wheel body 2 constitutes a rotating part of the turbine 1 . The turbine 1 is connected to a generator 3 which, in response to the rotation of the wheel body 2, supplies alternating current to a grid not shown. Thus, the device I can convert the hydraulic energy of the flow E into electrical energy. The flow E is conveyed to the wheel body 2 by a forced channel 4 which extends between the water reservoir and a tank 5 equipped with guide vanes 51 which locally regulate the flow E. A channel 6 is provided downstream of the wheel body 2 for discharging the flow E downstream of the installation I and retransmitting it to the river from which it is drawn.

[0030] The components 4, 5 and 6 together define the hydraulic path of the flow E.

[0031] A control unit 7 is used to operate the turbine 1 , in particul...

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Abstract

The invention relates to a hydraulic plant (I) that defines a path (4, 5, 6) for a forced water flow (E), and comprises at least one machine (1) of the turbine, pump or turbine-pump type, a member (8) provided with at least one deformable wall (81) and defining at least one closed volume (V8) with variable dimensions. The plant also includes means (9, 91) for supplying (Fg) the closed volume with a pressurised fluid. The member with a deformable wall (81) is mounted in a hydraulic duct (6) located downstream from a rotary portion (2) of the machine (1). The deformable wall defines, locally and downstream from the rotary portion (2), a modular section (S63) for the flow (E) passage in the hydraulic duct (6). According to the method of the invention, a pressurised fluid is injected (F9) into a closed volume having variable dimensions (V8) and defined by a member (8) provided in a hydraulic duct (6) located downstream from the rotary portion (2), in order to modulate the passage section (S63).

Description

technical field [0001] The present invention relates to a hydraulic device for converting hydraulic energy into mechanical or electrical energy or vice versa, having a machine of the turbine, pump or turbopump type, and in said hydraulic conversion device is defined A hydraulic path for forced flow. Background technique [0002] It is known to design such hydrodynamic installations according to a nominal operating point, which depends, for example, on the drop and power to be achieved at the output of the installation. In fact, the efficiency of a turbine and its dynamic performance are greatly influenced by hydraulic conditions, such as the height and flow of water passing through lakes and rivers near the location of the turbine, and by development needs which determine the amount of water passing through the turbine. However, the design of the different hydraulic channels of the plant, which is mainly suitable for one operating point, may not be suitable for some conditi...

Claims

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Application Information

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IPC IPC(8): F03B3/06F03B3/14F03B3/18F03B15/04F03B11/00
CPCF03B11/002Y02E10/226F03B11/04Y02E10/223F03B3/186F03B3/02F04D15/0022Y02E10/20
Inventor M·H·库斯东M·萨布林
Owner GE RENEWABLE TECH
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