Double-screw mixing transmission pump tooth type

A mixed pump, twin-screw technology, applied to pumps, pump components, rotary piston pumps, etc., can solve the problems of long contact line and increased leakage triangle area

Inactive Publication Date: 2009-12-16
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the use of cycloids can effectively reduce the area of ​​the leakage triangle, but the contact line is relatively long; the use of arcs can shorten the contact line, but it also increases the area of ​​the leakage triangle

Method used

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  • Double-screw mixing transmission pump tooth type
  • Double-screw mixing transmission pump tooth type
  • Double-screw mixing transmission pump tooth type

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings, so as to understand the implementation and features of the present invention more clearly.

[0051] see figure 1 , the present invention is composed of two three-headed screws, one of which is a convex screw and the other is a concave screw, and the profile is composed of an arc-arc envelope and a point meshing cycloid. In the meshing section where the end surface meshing line is generated in the main meshing area, point meshing cycloids are used to reduce the leakage triangle area, including convex screw point meshing cycloids b 1 c 1 , Convex screw addendum arc c 1 d 1 , Convex screw long leg cycloid d 1 e 1 , concave screw point meshing cycloid b 2 c 2 and concave screw long leg cycloid d 2 e 2 ; In other areas, focusing on shortening the length of the contact line and facilitating manufacturing, the arc-arc envelope is adopted, including the convex...

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Abstract

The invention discloses a double-screw mixing transmission pump tooth type. The shaped line of the double-screw mixing transmission pump tooth type is composed of two triple-head screw shaped lines, wherein, one screw shaped line is a convex screw shaped line, and the other screw shaped line is a concave screw shaped line. The convex screw shaped line is defined by an equation, the tooth shape of each screw is the same, and is distributed evenly along circumference; the tooth shape of each screw is composed of an arc-arc envelope curve and a point meshing cycloid; a main meshing zone adopts the point meshing cycloid and a long limb epicycloid ; other zones adopt the arc-arc envelope curves; the concave screw shaped line is totally obtained with the method that the convex screw adopts the meshing principle for conjugation calculation. The double-screw mixing transmission pump tooth type line of the invention totally conforms to the meshing principle, two rotor shaped lines are mutually conjugated, meshing lines formed by the shaped lines are closed, and contact lines formed by the rotors are continuous, so that the double-screw mixing transmission pump in the invention can be suitable for multiphase medium transmission places with higher transmission pressure and high air voids. Meanwhile, the screw adopting the double-screw mixing transmission pump tooth type of the invention has convenient manufacturing and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a tooth profile, in particular to a twin-screw mixed transport pump tooth profile. Background technique [0002] Multiphase mixed transportation technology is an efficient and economical oilfield development method developed in recent years. It uses a multiphase pump to replace the infusion pump and gas compressor, and transfers oil, water, gas, sand and paraffin through a pipeline. The resulting multiphase mixture is sent to a central processing unit. Compared with the traditional mining method, it has the following obvious advantages: ① Oil and gas separation equipment can be removed, steel pipe operation and steel consumption can be reduced, the transportation distance can be extended, and oil and gas treatment plants can be avoided in places with harsh geographical environments, thereby greatly reducing infrastructure investment and management costs; ②It reduces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C15/00F04C2/16
Inventor 曹锋李松山邢子文束鹏程
Owner XI AN JIAOTONG UNIV
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