Piston maintenance device for oil field pressure driving operation
The utility model relates to the technical field of oil field production tools, in particular to an oil field pressure drive operation piston maintenance device, which adopts the technical scheme that the oil field pressure drive operation piston maintenance device comprises a piston anti-abrasion d...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model relates to the technical field of oil field production tools, in particular to an oil field pressure drive operation piston maintenance device, which adopts the technical scheme that the oil field pressure drive operation piston maintenance device comprises a piston anti-abrasion device, the piston anti-abrasion device comprises a cylinder sleeve and a piston rod, the piston rod is mounted at the center in the cylinder sleeve, and external threads are arranged at the bottom of the piston rod. The piston ring and the piston sleeve are made of more corrosion-resistant materials, friction between the piston body and the cylinder sleeve is reduced, the piston body is not prone to deformation, the piston body is not prone to deformation, the piston body is not prone to deformation, the piston rod is not prone to deformation, and the piston rod is not prone to deformation due to the fact that the piston ring and the piston sleeve are made of more corrosion-resistant materials. The piston body is f |
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