Dynamic seal combination plunger assembly for oil field plunger well pump
A combined column and dynamic sealing technology, which is applied to pump components, variable displacement pump components, components of pumping devices for elastic fluids, etc., can solve the problems of short service life, reduced service life of metal sealing rings, high failure rate, etc. Problems, to achieve the effect of improving service life, reducing liquid leakage, and reducing reactive wear
Active Publication Date: 2016-03-16
许冲
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] short service life
[0005] 2. The elastic metal ring seal structure can solve the sealing problem between the pump barrel and the plunger, but the metal seal ring is always in contact with the pump barrel during the movement of the plunger's up and down strokes, which greatly reduces the metal seal. The service life of the ring, the failure rate is relatively high
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] like figure 1 , figure 2 , image 3 Shown: a dynamic seal combination plunger assembly for an oil field plunger oil well pump, the dynamic seal combination plunger assembly includes: an upper compensation sleeve 4, a seal Set 5 and Lower Compensation Set 10. The outer tube wall of the sealing sleeve 5 is fitted with a piston ring; the piston ring is a steel round tube, and an open groove 7-1 is cut on the busbar of the round tube. There are many piston rings, which are divided into upper piston ring 6, middle piston ring 7 and lower piston ring 8, wherein there are many middle piston rings 7, and the upper, middle and lower piston rings are arranged without gaps in sequence. The outer cylindrical surface of the piston ring and the inner wall of the pump cylinder 9 are sealing surfaces. The upper end of the upper compensation sleeve 4 is connected and locked with the central pipe 1 through the upper guide sleeve 2 . The lower end of the lower compensation sleeve 10...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a dynamic sealing combined plunger assembly for an oil field plunger oil well pump and relates to oil exploration equipment. The dynamic sealing combined plunger assembly comprises an upper compensation sleeve, a sealing sleeve and a lower compensation sleeve, wherein multiple steel piston rings are arranged on the outer pipe wall of the sealing sleeve in a sleeved mode, and an O-shaped sealing wafer is installed in each piston ring. When a plunger moves from a lower stopping point to an upper stopping point, high pressure in a central pipe is transmitted to a rubber sleeve cavity through a pressure transmitting groove, the pressure is transmitted to a sealing ring so that a sealing section can be in clearance-free fit with a pump barrel after expanding, and loss of liquid in the upper stroke is reduced. When the plunger moves from the upper stopping point to the lower stopping point, the difference of upper pressure and low pressure of the plunger gradually disappears, namely the pressure on the sealing section of the plunger gradually decreases and finally disappears, the sealing section is in a retraction state, the sealing sleeve and the steel piston rings retract, friction between the steel piston rings and the pump barrel in the lower stroke is reduced, and the service life of the metal sealing ring is prolonged.
Description
technical field [0001] The invention relates to an oil production equipment used in an oil field, in particular to a dynamic seal combined plunger assembly for a plunger pump in an oil field. Background technique [0002] In the existing oil field mechanical lifting oil production, the utilization rate of the plunger oil well pump accounts for the majority, and during the oil pumping process of the plunger oil well pump, there is rigid friction between the plunger and the pump barrel, and the sealing performance of the plunger oil well pump cannot be guaranteed. It is safe to cooperate with the reciprocating motion of the pumping unit, and its sealing performance is gradually decreasing; especially in heavy oil, oil wells with a lot of sand in the oil, and polymer-containing oil wells, with the increase of time and wear, the plunger oil pump Leakage increases gradually, resulting in low pumping efficiency and increased idle work of the pumping unit, which increases the cost ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/14
Inventor 许冲张兴明
Owner 许冲