OIL-SUBMERSIBLE LINEAR MOTOR OIL EXTRACTION SYSTEM
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United States of America Patent
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Apr 14, 2016
app pub date -
Dec 26, 2013
filing date -
Dec 26, 2013
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Abstract
A submersible linear motor oil pumping system includes a submersible linear motor (100), an oil pump (200), a sealing device (300), and a balance assembly (400) installed underground. The submersible linear motor (100) includes a stator (10) and a mover (20) moving reciprocally inside the stator (10). The oil pump (200) includes a barrel (32), a piston (34), an outer sleeve (36), and a oil feeding sieve tube (38). The sealing device (300) is positioned between the submersible linear motor (100) and the oil pump (200). The balance assembly (400) is positioned at a lower end of the submersible linear motor (100) and is configured to balance pressure inside and outside the submersible linear motor (100). The present system omits the sucker rod of existing oil pumping systems, avoiding stroke loss caused by sucker rod elongation and energy loss caused by the weight of the sucker rod and pipe rod offset grinding, thereby improving the efficiency of the system.
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