Multi-head equal-wall thickness anticorrosive screw pump

A technology of equal-wall-thickness screw pumps, applied in pumps, rotary piston pumps, pumps with flexible working elements, etc., can solve the problems of poor corrosion resistance of the stator shell, small displacement of the screw pump, and small diameter of the inner hole of the rotor, etc. problems, to achieve the effect of prolonging the inspection period of the pump, prolonging the service life and reducing the maintenance workload

Inactive Publication Date: 2009-10-07
曾正伟
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing screw pumps with small displacement, small rotor inner hole diameter and poor corrosion resistance of the stator shell, the present invention provides a multi-head equal-wall anti-corrosion screw pump. The multi-head equal-wall anti-corrosion screw pump not only has a large displacement , and has the characteristics of large rotor inner hole diameter and good corrosion resistance of the stator shell

Method used

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  • Multi-head equal-wall thickness anticorrosive screw pump
  • Multi-head equal-wall thickness anticorrosive screw pump
  • Multi-head equal-wall thickness anticorrosive screw pump

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] Such as figure 1 combine figure 2 As shown, the multi-head anti-corrosion screw pump with equal wall thickness includes a stator housing 3 with a rubber layer 2 inside and a hollow rotor 1. There is a rubber layer 2 in the stator housing 3, and a hollow rotor 1 is built in the rubber layer 2. The hollow rotor 1 is helical. The number of heads is 1, and the inner hole of the hollow rotor 1 is processed into a shape corresponding to the shape by using a special CNC machine tool, so that the wall thickness of the hollow rotor 1 is equal; the number of spiral heads of the stator housing 3 that matches the hollow rotor 1 is 2, using a special numerical control machine tool, process the inner hole of the stator housing 3 into a shape corresponding to the shape, so that the wall thickness of the stator housing 3 is equal, and cast a rubber layer 2 of equal thickness along...

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Abstract

The invention provides a multi-head equal-wall thickness anticorrosive screw pump, for mainly resolving problems of small displacement of the prior screw pump, small bore diameter of the rotor and bad corrosion resistance of stator casing, which is characterized in that: spiral head number of a hollow rotor (1) is from 1 to 4, inner bore form of the hollow rotor (1) is relative to the appearance, wall thickness of the hollow rotor (1) is constant, spiral head number of the stator casing matched with the hollow rotor (3) is 2-5, the inner bore form of the stator casing (3) is relative to the appearance, the wall thickness of the stator casing (3) is constant, a glass fibre reinforced plastic anticorrosive layer is fixed outer the stator casing (3). The multi-head equal-wall thickness anticorrosive screw pump has advantages of big displacement, big bore diameter of the rotor and good corrosion resistance of the stator casing.

Description

Technical field: [0001] The invention relates to a screw pump used for lifting oil production wells in the field of oil production, in particular to a multi-head, equal-wall-thick, anti-corrosion screw pump. Background technique: [0002] In the field of oil production, the screw pump is an important lifting equipment for oil production wells. However, the existing screw pump has the problem of small displacement due to the single-head structure, which results in high oil production cost; and because the inner hole of the rotor is in the form of a straight hole, the wall thickness of the rotor is not equal, and the wall is thinner when the aperture is enlarged. The strength decreases, so the pore diameter is limited, and the small pore diameter makes the channel of the backwashing well narrow, thus reducing the effect of the backwashing well; finally, due to the poor anti-corrosion effect of the stator shell of the existing screw pump, the corrosion resistance of the stator ...

Claims

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Application Information

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IPC IPC(8): F04C5/00F04B47/02
Inventor 曾正伟
Owner 曾正伟
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