System and method for driving multiple pumps electrically with a single prime mover

a technology of prime mover and electrical drive, which is applied in the direction of pump control, positive displacement liquid engine, pump, etc., can solve the problems of busy and crowded pumping structur
US20150211512A1Inactive Publication Date: 2015-07-30GENERAL ELECTRIC CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GENERAL ELECTRIC CO
Publication Date
2015-07-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

A converterless motor-driven pump system includes an off-grid prime mover. The prime mover includes a rotational driveshaft that operates in response to a throttle or fuel input controller to control a rotation speed of the prime mover driveshaft. Operation of the throttle or fuel input controller is based on desired output characteristics of a pumping load. One or more electric power generators are driven by the off-grid prime mover to generate AC or DC power on an electrical bus shared by a plurality of variable speed electric motors. A plurality of pumps is connected to a common manifold shared by the plurality of pumps. The plurality of pumps is driven by the plurality of variable speed electric motors to generate a desired wellhead pressure or pumping load flow rate via the shared common manifold.
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Description

BACKGROUND

[0001] The subject matter of this disclosure relates generally to motor-driven pumps, and more particularly, to a multiplicity of motor-driven pumps being fed from a singularity of generators tied to a single, throttle controlled prime mover.

[0002] A common way to drive multiple pumps uses multiple prime movers. The gas fracking industry, for example, generally employs a single diesel engine powering a single pump through a mechanical gear box. This technique employs many engines, gearboxes and pumps on many trailers, resulting in a very busy and very crowded pumping structure.

[0003] FIG. 1 illustrates a conventional system 1 that is known in the gas fracking industry for operating a pump. The system 1 uses a single prime mover including a diesel engine 2 that is fueled by either natural gas or diesel fuel to drive a fracking pump 3. Each fracking pump 3 is mechanically coupled via a transmission and corresponding gearbox 5 to a single reciprocating pump 3 to achieve optimiza...

Claims

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