Random and automatic regulating polished rod sealing device of oil pumping machine

A technology of automatic adjustment and sealing device, which is applied in the directions of sealing/packing, wellbore/well components, earth-moving drilling, etc., to prevent pollution loss, avoid oil leakage, and reduce the number of packing replacements.

Inactive Publication Date: 2010-10-20
LIAONING ZHONGRUI S&T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the existing ordinary polished rod sealing device, the present invention provides a random and au...

Method used

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  • Random and automatic regulating polished rod sealing device of oil pumping machine
  • Random and automatic regulating polished rod sealing device of oil pumping machine

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Embodiment Construction

[0018] Such as figure 1 As shown, a random automatic adjustment polished rod sealing device for an oil pumping unit includes a spherical base 17 arranged on an oil well pipe 18, a spherical seat 15 with an arc groove 2 at the upper end is arranged above the spherical base 17, and the spherical seat 15 It is fixed on the spherical base 17 by the translational pressing cap 16 arranged on its outside; the spherical body 3 with the first groove 5 at the upper end is arranged above the spherical seat 15, the arc groove 2 of the spherical seat 15 and the spherical body 3 Corresponding to the lower end of the spherical body 3, the spherical body 3 is fixed on the spherical seat 15 through the spherical pressure cap 4 arranged on the outside; a primary sealing packing 14 is arranged in the first groove 5 at the upper end of the spherical body 3, and the The primary sealing packing 14 corresponds to the first groove 5 on the upper end of the spherical body 3; above the primary sealing ...

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Abstract

The invention provides a random and automatic regulating polished rod sealing device of an oil pumping machine, which can ensure the central position of a polished rod relative to an oil well and comprises a spherical pedestal, wherein a spherical seat the upper end of which is provided with a cambered groove is arranged above the spherical pedestal, and the spherical seat is fixed on the spherical pedestal through a translation pressure cap which is arranged outside the spherical seat; a spherical body the upper end of which is provided with a first groove is arranged above the spherical seat, and the spherical body is fixed on the spherical seat through a spherical pressure cap which is arranged outside the spherical body; a first-level sealed packing is arranged in the first groove at the upper end of the spherical body; a connecting body the upper end of which is provided with a second groove is arranged above the first-level sealed packing, a first-level packing pressure cap is arranged outside the upper end of the spherical body and outside the lower end of the connecting body, and the upper end of the spherical body and the lower end of the connecting body are in threaded connection with the first-level packing pressure cap; a second-level sealed packing is arranged in the second groove at the upper end of the connecting body; and a second-level packing pressure cap is arranged outside the upper end of the connecting body, and the second-level packing pressure cap is in threaded connection with the upper end of the connecting body.

Description

Technical field: [0001] The invention relates to a random and automatic adjustment polished rod sealing device for a pumping unit used in an oil field. Background technique: [0002] At present, the rod pumping equipment composed of pumping unit, sucker rod (ie polished rod) and oil pump still occupies an important position in the crude oil extraction of major oil fields in my country; and the polished rod sealing device is one of the rod pumping equipment. Indispensable oil wellhead sealing device. As the oilfield enters the late stage of high water cut development, due to the increasing number of wells with high water cut and low submergence, the number of wells with eccentric wear of rods and pipes has increased year by year; coupled with the misalignment of the donkey head of the pumping unit with the wellhead, the number of pumping wellheads has greatly increased. The sealing difficulty and maintenance cost of the polished rod sealing device have seriously affected the ...

Claims

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Application Information

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IPC IPC(8): E21B33/03
Inventor 田树梁
Owner LIAONING ZHONGRUI S&T
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