Cone valve pump

A reciprocating pump for use in highly deviated well sections. The pump comprises three coaxial cylinders including inner and outer fixed cylinders (7, 9, figure 2) and a middle reciprocating cylinder (8, figure 2). A reciprocating guide rod 1 is connected to the middle cylinder by a cone valve 2 wh...

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Bibliographische Detailangaben
Hauptverfasser:	Peng Gao, Chao Zhou, Chunhua Liu, Jianjun Wu, Xinfu Liu, Shousen Zhang
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	A reciprocating pump for use in highly deviated well sections. The pump comprises three coaxial cylinders including inner and outer fixed cylinders (7, 9, figure 2) and a middle reciprocating cylinder (8, figure 2). A reciprocating guide rod 1 is connected to the middle cylinder by a cone valve 2 which is located within the outer cylinder. An elastic (e.g. spring mounted) cone valve 3 is attached to one end of the inner cylinder and is located within the middle cylinder along with a fixed plunger 4. A double centralizer 5 is located within the outer cylinder and includes a first centralizer mounted to the middle cylinder, and a second, moving centralizer within an annular space between the outer cylinder and the middle cylinder. The inner and outer cylinders are connected by a pump cylinder coupling (10, figure 2) which includes a coupling diversion hole (11, figure 2) surrounded by a desilting ring groove (12, figure 2).