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Polished rod mechanical seal device of pumping unit

A technology of mechanical sealing device and pumping unit, which is applied in the directions of sealing/packing, wellbore/well parts, earthwork drilling and production, etc., which can solve the problems of oil leakage and inability to adjust, so as to prolong the service life, save costs and avoid The effect of manual manipulation

Active Publication Date: 2016-03-09
DAQING YINNIMEILI MACHINERY EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mechanical seal device for polished rods of pumping units, which overcomes the fact that manual rotation of the large gland of the packing box is used to adjust the packing tightness, which cannot be adjusted according to the instantaneous change of the packing packing tightness, which is easy to cause oil spill problem

Method used

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  • Polished rod mechanical seal device of pumping unit

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Embodiment Construction

[0011] The technical scheme of the present invention will be further described below in conjunction with accompanying drawing, but should not be construed as limiting the present invention:

[0012] figure 1 It is a structural schematic diagram of the present invention, as shown in the figure, the polished rod mechanical seal device of the pumping unit includes a packing box 1 and a packing filler 2, and the packing box 1 is filled with the packing filler 2. It also includes an adjustable spring cover 3, an adjustable spring 4, an adjustable spring outer cover 5 and a packing packing small cover 6, the adjustable spring outer cover 5 is equipped with an adjustable spring 4, and the bottom of the adjustable spring outer cover 5 is connected to the packing box 1 As a whole, the adjustment spring outer cover 5 top is equipped with the adjustment spring large gland 3, and the packing packing small gland 6 is housed between the adjustment spring 4 bottom and the packing filler 2. ...

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Abstract

The invention relates to a pumping unit polish rod mechanical sealing device which comprises a packing box and packing. The packing box is filled with the packing. An adjusting spring large pressing cover, an adjusting spring, an adjusting spring outer sleeve and a packing small pressing cover are further included. The adjusting spring is arranged in the adjusting spring outer sleeve. The bottom of the adjusting spring is integrally connected with the packing box. The adjusting spring large pressing cover is arranged at the top of the adjusting spring outer sleeve. The packing small pressing cover is arranged between the bottom of the adjusting spring and the packing. The spring is used for adjusting the tightness of the packing, automatic adjusting can be carried out at any time according to tightness frequency changing of the packing in a sealing box, manual operation is avoided, time and labor are saved, in addition, the service life of the packing is prolonged, and a large amount of cost is saved for oil field production.

Description

technical field [0001] The invention belongs to the field of oil field machinery and equipment, and relates to a polished rod mechanical seal device for a pumping unit. Background technique [0002] At present, the tightness adjustment of the packing of the polished rod of the sealed pumping unit is carried out by manually rotating the large gland of the packing box. The existing technical limitation is: during the reciprocating movement of the polished rod, the tightness of the packing has several changing frequencies , manual adjustments cannot adapt to the instantaneous change of tightness, which may easily cause oil leakage. Therefore, it is particularly important to invent a mechanical device that can complete the adjustment according to the instantaneous change of packing tightness. Contents of the invention [0003] The purpose of the present invention is to provide a mechanical seal device for polished rods of pumping units, which overcomes the problem that manual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03
CPCE21B33/03
Inventor 刘建全张勇董庆玮张恒飞何启恒魏守东王爽
Owner DAQING YINNIMEILI MACHINERY EQUIP MFG