IMPULSE ROTOR GENERATOR
First Claim
1. An impulse rotor generator for generating power in response to a primary mud flow in a drill string, said generator comprising:
- a power rotor,at least one stationary magnetic pickup,a pickup coil mounted on said at least one stationary magnetic pickup,said power rotor being positioned at least in part in said primary mud flow and being rotatable in response to said primary mud flow, said power rotor having an axis of rotation that is transverse to said primary mud flow,said power rotor having a plurality of magnets affixed thereto, said magnets being arranged so as to magnetically couple with the at least one stationary magnetic pickup,wherein upon rotation of said power rotor in response to said primary mud flow, a current is produced in said pickup coil mounted on said at least one stationary magnetic pickup.
2 Assignments
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Accused Products
Abstract
An impulse rotor generator is provided for generating power in response to a primary mud flow in a drill string. The generator comprises a power rotor, at least one stationary magnetic pickup, and a pickup coil mounted on the at least one stationary magnetic pickup. The power rotor is positioned at least in part in the primary mud flow and is rotatable in response to the primary mud flow, the power rotor having an axis of rotation that is transverse to said primary mud flow. The power rotor is provided with a plurality of magnets affixed thereto, the magnets being arranged so as to magnetically couple with the at least one stationary magnetic pickup. Upon rotation of the power rotor in response to the primary mud flow, a current is produced in the pickup coil mounted on the at least one stationary magnetic pickup.
14 Citations
20 Claims
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1. An impulse rotor generator for generating power in response to a primary mud flow in a drill string, said generator comprising:
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a power rotor, at least one stationary magnetic pickup, a pickup coil mounted on said at least one stationary magnetic pickup, said power rotor being positioned at least in part in said primary mud flow and being rotatable in response to said primary mud flow, said power rotor having an axis of rotation that is transverse to said primary mud flow, said power rotor having a plurality of magnets affixed thereto, said magnets being arranged so as to magnetically couple with the at least one stationary magnetic pickup, wherein upon rotation of said power rotor in response to said primary mud flow, a current is produced in said pickup coil mounted on said at least one stationary magnetic pickup. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An impulse rotor generator for generating power in response to a primary mud flow in a drill string, said generator comprising:
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a pressure barrel dimensioned to form an annulus between said apparatus and said drill string, said annulus permitting the passage of said primary mud flow, a power rotor located at least in part in said pressure barrel, said power rotor being rotatable about an axis transverse to the longitudinal axis of the pressure barrel, said power rotor extending at least in part in said annulus, so as to rotate in response to the primary mud flow through said annulus said power rotor having a plurality of magnets affixed thereto, said plurality of magnets being arranged to magnetically couple with at least one adjacently positioned stationary magnetic pickup, said stationary magnetic pickup having mounted thereon a pickup coil in which a current in generated in response to rotation of the power rotor relative to said stationary magnetic pickup. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An impulse rotor generator for generating power in response to a primary mud flow in a drill string, said generator comprising:
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a power rotor, at least one stationary magnetic pickup, a pickup coil mounted on said at least one stationary magnetic pickup, said power rotor being positioned at least in part in said primary mud flow and being rotatable in response to said primary mud flow, said power rotor having an axis of rotation that is transverse to said primary mud flow, said power rotor having at least one section of magnetically permeable material that spans said power rotor from side to side; said stationary magnetic pickup having at least one magnet affixed thereto, said magnet being arranged so as to permit said stationary magnetic pickup to magnetically couple with the at least one section of magnetically permeable material spanning said power rotor; wherein upon rotation of said power rotor in response to said primary mud flow, a current is produced in said pickup coil mounted on said at least one stationary magnetic pickup.
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Specification