Turbine for power generation in a drill string
AssigneeWeatherford Energy Services GmbH
InventorsUwe Draeger, Helmut Winnacker
Life of this patent
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Abstract
The invention is directed to a turbine (3) for generating power in a drill string (2), including a turbine rotor (10) drivable by a fluid and a bypass device having a first bypass channel bypassing the turbine rotor (10). For varying the volumetric flow through the bypass channel, provision is made for a valve (28) and a control device driven by the fluid and having a drive element (24) by means of which the valve (28) is movable anywhere between a first and a second position. The drive element (24) produces a flow resistance in the fluid flow path downstream from the turbine rotor (10) and downstream from the valve (28) and in the flow direction takes support upon a spring (26).
Claims21
A turbine for generating power in a drill string, with a turbine rotor drivable by a fluid, and a bypass device having a first bypass channel bypassing the turbine rotor, a valve for varying the volumetric flow through the bypass channel, and a control device which is driven by the fluid and has a drive element by means of which the valve is movable anywhere between a first and a second position, wherein said drive element produces a flow resistance in the fluid flow path downstream from the turbine rotor and downstream from the valve and in the flow direction takes support upon a spring.
Dependencies are inferred from the claim text.