Oil well pump driven by linear motor

A linear motor rotor and a linear motor stator form the linear motor, the lower portion of an upper pump cylinder is connected with an upper thread of a pump cylinder coupling, the upper portion of a lower pump cylinder is connected with a middle thread of the pump cylinder coupling, a lower thread...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG XUEJUN, LIU WEI, ZHOU ZHIQIANG, ZHENG XIAOQUAN, LIU JIANCHAO, GU ZHONGBO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A linear motor rotor and a linear motor stator form the linear motor, the lower portion of an upper pump cylinder is connected with an upper thread of a pump cylinder coupling, the upper portion of a lower pump cylinder is connected with a middle thread of the pump cylinder coupling, a lower thread of the pump cylinder coupling is connected with the upper portion of a connecting pipe, and the inner diameter of the upper pump cylinder is larger than that of the lower pump cylinder. The lower portion of the connecting pipe is connected with a linear motor stator, the upper plunger, the oil outlet valve, the oil outlet connector, the oil inlet valve and the lower plunger are sequentially connected with the upper plunger, the oil outlet valve and the oil outlet connector, the oil inlet valve is placed in the upper pump cylinder, the upper plunger and the upper pump cylinder are sealed in a matched mode, the lower plunger is placed in the lower pump cylinder, and the lower plunger and the lower pump cylinder are s