A forced uprighting lubricating and sealing device for well polished rods of pumping units

A technology for pumping wells and sealing devices, which is applied in the direction of sealing/packing, drilling pipes, drilling equipment, etc., can solve the problems of difficult access and filling, high packing difficulty, etc., and achieve the goal of reducing difficulty, labor intensity, and cost expenditure Effect

Active Publication Date: 2017-08-04
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a forced uprighting lubricating and sealing device for the polished rod of the pumping unit to solve the existing technical problems that the packing is difficult to take and fill and difficult to take and fill.

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  • A forced uprighting lubricating and sealing device for well polished rods of pumping units
  • A forced uprighting lubricating and sealing device for well polished rods of pumping units
  • A forced uprighting lubricating and sealing device for well polished rods of pumping units

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Embodiment Construction

[0023] In order to solve various problems existing in the prior art, the present invention designs a kind of oil-pumping well polished rod forced uprighting lubricating and sealing device, the main design ideas are as follows: the present invention designs the lubricating chamber, and the lubricating chamber is additionally equipped with lubricating grease In the head, preservatives or lubricants can be added to improve the environment of the packing and the polished rod, reduce the wear of the packing, reduce the difficulty of replacing the packing and the consumption of the packing, and reduce the need for the staff to replace the packing labor intensity. In addition, the sealing chamber is screwed under the lubricating chamber. When replacing the packing box, it can not only prevent the leakage of grease or antiseptic, but also replace the rubber gate to play a sealing role, reducing the cost of the rubber gate. . In addition, a first external thread is provided on the upp...

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Abstract

The invention discloses a compelled alignment lubrication sealing device of a polish rod of a pumping unit. The compelled alignment lubrication sealing device comprises a lubricating room, a lubricating grease filling head, a bearing room, an alignment bearing, a bearing pin, an alignment bearing ring, a sealing ring, a bearing room cover plate, a connecting bolt, a sealing room, a sealing room packing and a locking nut; through cooperation of every part, the eccentric wear caused by big alignment bias between a well horse head and a well opening of the pumping unit and consequently shortened service life the packing are solved; the difficulty of replacing the packing is reduced, the well stopping time is decreased, the oil well production time is improved, and the oil well output is improved; the compelled alignment lubrication sealing device can prevent lubricating grease or antiseptic from leakage; meanwhile, the compelled alignment lubrication sealing device can replace a rubber gate to play the sealing effect, the expenditure of the rubber gate is reduced, and normal stable production of the oil well is ensured.

Description

technical field [0001] The present application relates to a sealing device, in particular to a forced uprighting lubricating and sealing device for a well polished rod of a pumping unit. Background technique [0002] During the production process of the pumping well, due to reasons such as unqualified installation, subsidence of the foundation or temperature difference, the donkey head of the pumping unit will be misaligned with the wellhead, resulting in partial wear of the polished rod or serious wear of the wellhead packing. And due to the deflection of the polished rod, it will increase the difficulty of replacing the packing, resulting in the difficulty of replacing the packing. In order to solve the problem of the deflection of the polished rod, the deflection adjustment method currently used in actual production is: use the adjustable packing box to debug the polished rod. But this kind of packing box has a shortcoming, and its maximum adjustable volume can not meet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B17/10
CPCE21B17/1071E21B33/03
Inventor 黄兴鸿黄艳萍齐玉梅白玉刘云
Owner PETROCHINA CO LTD
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