Propeller, hydraulic machine thereof, and assembling method thereof
A propeller and hydraulic press technology, which is applied in the direction of machines/engines, liquid fuel engines, pump devices, etc., can solve the problems of costing money and increasing the cost of propellers, and achieve the effect of reducing cumbersomeness
Inactive Publication Date: 2012-12-05
GE RENEWABLE TECH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Therefore, this solution is costly
Furthermore, it requires a lot of work for machining the hub and the blades, which also leads to an increase in the cost of such propellers
Method used
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[0032] figure 1 and 2 Shown is a propeller 1 intended to fit a hydraulic machine, not shown, such as a turbine, a pump or a turbine-pump. During operation, a fluid from a pipe not shown flows through the propeller 1, which then turns about a central axis X-X.
[0033] The propeller 1 comprises five blades 2 in a helical shape regularly distributed around the axis X-X and extending from a central hub 3 of the propeller 1 . The hub 3 is hollow and extends along the axis X-X. The hub 3 is spherical in the shape of a conical section with axis X-X. Propeller 1 is formed by assembling five identical segments, one of which is in image 3 shown in . Each segment 4 , the geometry of which is described in more detail below, comprises a body 5 firmly connected to the blade 2 . The main body 5 is used to form part of the hub 3 after the propeller 1 is assembled.
[0034] Each segment 4 may be a one-piece segment, ie comprising a single piece and made from a casting mould. Alternat...
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Abstract
The object of the invention is a propeller (1) for a hydraulic machine, intended to be crossed by a flow, the propeller (1) including a hub (3) extending along an axis (X-X) of rotation of the propeller (1) and vanes (2) extending from the hub (3). The propeller (1) consists of several sectors (4), each including a body which, once the sectors (4) are assembled, form together the hub (3). Each vane (2) is firmly attached to the body of a sector (4). The sectors (4) are assembled together in order to form the propeller (1), by means of at least one shrunk-on ring (6) which is placed around the bodies of the sectors (4). The hub (3) is hollow, each sector (4) comprises a side wall (50), and a projection (54) which is firmly attached to the side wall (50), and which protrudes towards the inside of the hub (3), perpendicularly to the axis (X-X). The sectors (4) are further assembled together in order to form the propeller (1), by means of at least one washer (9) assembled to the projection (54) of each sector, inside the hub (3), by means of added attachment elements (10).
Description
technical field [0001] The invention relates to a propeller for a hydraulic machine, in particular of the turbine type, and to a hydraulic machine equipped with such a propeller, and to a method for assembling such a propeller. Background technique [0002] A hydraulic machine in the sense of the invention may be a turbine, a pump or a turbopump, such as is used in power plants for generating hydroelectric power. The invented propeller is traversed by the forced flow of water. In the following, upstream means the side of the flow at a higher level relative to the downstream of the flow. When the machine is a turbine, such upstream to downstream flow has the effect of driving the propeller in rotation. When the machine is a pump, rotation of the impeller drives such flow in the opposite direction from downstream to upstream. [0003] Some hydraulic propellers have a diameter greater than 6 meters. It is very difficult, if not impossible, to transport such thrusters to the...
Claims
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IPC IPC(8): F03B3/12F04D29/18F04D29/60
CPCF04D13/0613F03B3/128Y02E10/223F04D29/181F03B3/126F03B3/121Y02E10/20Y10T29/49332F04D29/322F04D29/329
Inventor M·萨布林S·博利厄
Owner GE RENEWABLE TECH