2/3-molded-line double-head single-screw pump applicable to oil extraction in oil field

A single-screw pump and double-head screw technology, which is applied in pumps, machines/engines, rotary piston pumps, etc., can solve the problems of stator lining aging, partial shedding, and large vibration, so as to save maintenance funds and extend service life The effect of life and stable performance

Inactive Publication Date: 2012-05-02
TIANJIN RONGHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of existing single-head screw pumps such as large vibration, high noise, low efficiency, and the rubber stator lining is easy to age and partially fall off, the present invention provides a 2 / 3 type double-head screw pump suitable for oil production. single screw pump

Method used

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  • 2/3-molded-line double-head single-screw pump applicable to oil extraction in oil field
  • 2/3-molded-line double-head single-screw pump applicable to oil extraction in oil field
  • 2/3-molded-line double-head single-screw pump applicable to oil extraction in oil field

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the embodiments and the drawings.

[0013] Such as figure 1 , 2 As shown, a 2 / 3-type double-head single screw pump suitable for oil field production includes a 2 / 3-type double-head single-screw pump body, and its characteristics are reflected in the 2 / 3-type double-head single screw pump body The surface of the double-head screw rotor 2 of the single screw pump is uniformly compounded with a nylon layer 3, and the metal stator 1 is a die-cast metal stator.

[0014] figure 1 , 2 In the elliptical profile of the cross-section of the double-headed helical rotor 2, the ratio of short to long radii b / a=1 / 2~3 / 4, and the eccentricity of rotation between the double-headed helical rotor 2 and the metal stator 1 is e=1 / 2(ab ).

[0015] In the illustrated embodiment, the ratio of the short and long radius of the double-headed helical rotor 2 is taken as b / a=2 / 3. At this time, the rotational eccentricity ...

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Abstract

The invention discloses a 2/3-molded-line double-head single-screw pump applicable to oil extraction in an oil field. The 2/3-molded-line double-head single-screw pump comprises a 2/3-molded-line double-head single-screw pump body, wherein a nylon layer is uniformly compounded on the surface of a double-head helical rotor of the 2/3-molded-line double-head single-screw pump; a stator is a die-cast metal stator; a ratio b/a of the short radius to the long radius of the elliptical outline of the section of the double-head helical rotor is 1/2 to 3/4; and the rotary eccentricity e between the double-head helical rotor and the stator is 1/2(a-b). The 2/3-molded-line double-head single-screw pump is low in vibration; by adopting a metal stator structure, a swelling phenomenon is avoided and a starting torque is smaller, so that the pump can run at a higher rotating speed, and the flow is increased; therefore, the pump can be applied to submersible pumps, oil-immersed pumps and deep well pumps with larger flow, and is high in performance, saves energy and has a very wide application prospect.

Description

Technical field [0001] The invention belongs to a screw pump for oil production, and particularly relates to a 2 / 3-type double-head single screw pump suitable for oil field production. Background technique [0002] Compared with the 2 / 3-type double-head single-head screw pump, the 1 / 2-type line single-head screw pump commonly used in existing oilfield production operations has practical problems of large vibration, high noise and low efficiency, and it is gradually being promoted at home and abroad. The applied 2 / 3 type double-head single-screw pump has the characteristics of low rotor center of gravity deviation and low noise at higher speed; the double-head single-screw pump has a 2x3 chamber per revolution, which makes the pump The pulsation is greatly reduced, and the increase of the chamber makes the instantaneous speed of the area with a larger sliding rate lower, which can reduce wear and increase the service life. In addition, the new face tightness of the 2 / 3 type line ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C5/00
Inventor 庄朝荣李宗民刘文星薄桂志
Owner TIANJIN RONGHENG GROUP
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