Anti-grinding pair of hollow pumping rod

A hollow sucker rod antiwear pair is composed of an upper joint, a rod body, a righting sleeve and a lower joint, wherein the upper joint, the rod body, the lower joint are connected in order, the righting sleeve is sleeved on the rod body. The upper joint, the rod body and the lower joint are all h...

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Bibliographische Detailangaben
Hauptverfasser: WANG SHUFEN, LI MENG, FAN XIANQUAN, SUN JINCHAO, ZHAO BAODONG, JIANG XIA, TAO LIXIA
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:A hollow sucker rod antiwear pair is composed of an upper joint, a rod body, a righting sleeve and a lower joint, wherein the upper joint, the rod body, the lower joint are connected in order, the righting sleeve is sleeved on the rod body. The upper joint, the rod body and the lower joint are all hollow. The righting sleeve is made of metal material whose hardness is lower than the oil pipe. Because the righting sleeve doesn't move when sucking oil, the righting sleeve doesn't wear the rude inner surface of the oil pipe due to attrition, and because the surfaces of the rod body and the inner surface of the righting sleeve are smooth, although relative slide exists between the rod body and the inner surface of the righting sleeve, wearing can not be easily casued, thus the hollow sucker rod antiwear pair can not only ensure that the oil pipe and the sucker rod don't wear, but also ensure a higher service life.