Self-refluxing single flow valve for oil-submersible electric pump
A submersible electric pump, self-return technology, applied in the direction of control valve, valve device, pump components, etc., can solve the problem of poor switching effect of check valve and oil drain valve, achieve good switching effect, reduce pump inspection frequency, The effect of improving adaptive performance
Active Publication Date: 2009-12-16
大庆油田力神泵业有限公司
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to overcome the disadvantages of poor switching effect of the check valve and oil drain valve connected to the outlet of the existing submersible electric pump unit, the present invention provides a self-return check valve for the submersible electric pump. Flow valve has the characteristics of good switching effect of check valve and oil drain valve
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
[0008] The present invention will be further described below in conjunction with accompanying drawing:
[0009] As shown in the accompanying drawings, the self-reflux check valve for the submersible electric pump includes a valve body 1 with an upper joint 3 and a lower joint 2 at the upper and lower ends respectively. When the unit is shut down, the well fluid in the tubing string is drained through the external oil drain hole 4; the valve body 1 has a built-in barrel-shaped spool 5 with inner and outer annular steps, and the spool 5 can move up and down in the valve body 1, and the spool 5 changes diameter up and down. The ends are respectively inserted into the upper joint 3 and the lower joint 2 of the valve body 1, and the spool 5 can also move up and down in the upper joint 3 and the lower joint 2. There is a relatively large channel between the lower variable diameter end and the lower joint 2, so that the well fluid can flow smoothly; the lower wall of the valve core 5...
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 self-backflow check valve for a submersible electric pump, which mainly solves the problem of bad switch effect of the check valve and an oil leakage valve which are linked by an outlet of the prior submersible electric pump set. The self-backflow check valve for the submersible electric pump is characterized in that a wall of the middle upper part of a valve body (1) is provided with an outer oil leakage hole (4), a valve core (5) with annular stages inside and outside the valve body is arranged inside the valve body (1), the upper variable-diameter end and the lower variable-diameter end of the valve core (5) are respectively placed in an upper connector (3) and a lower connector (2) of the valve body (1), a wall at the lower part of the valve core (5) is provided with an oil inlet hole (6), a wall on the upper part of the valve core (5) is provided with an inner oil leakage hole (7) corresponding to the oil leakage hole (4), a valve ball (8) is arranged on the annular stage inside the valve core (5), the inside of the upper connector (3) is connected with a baffle (9) of the valve ball with an oil flowing passage. The self-backflow check valve for the submersible electric pump has the characteristics of good switch effect of the check valve and the oil leakage valve.
Description
Technical field: [0001] The invention relates to a one-way valve used in an electric submersible pump in the field of oil production in an oil field, in particular to a self-reflux one-way valve for an electric submersible pump. Background technique: [0002] With the development of oilfields, electric submersible pump technology is constantly developing to meet the needs of different production periods. At present, the outlet of the submersible electric pump unit is connected with two parts, the check valve and the oil drain valve. When the unit is started, the check valve at the outlet of the pump is opened to lift the well fluid to the ground. Open to make the well fluid in the tubing string flow out from the drain hole, and the two valves work independently. When the unit is working in a sand-containing well, when the unit is shut down and does not require oil drainage, the sand particles in the sand-containing well fluid in the tubing will deposit in the tubing above t...
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): F04B53/10F16K15/00
Inventor 唐凤锐邵永实邓辉董振刚殷红雯朴雪峰谭吉春刘成丁学光史万苹
Owner 大庆油田力神泵业有限公司