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Double screw mixed transport pump gear type

A mixed pump and twin-screw technology, used in pumps, rotary piston pumps, rotary piston machines, etc., can solve problems such as poor sealing, and achieve the effect of convenient processing and high efficiency

Inactive Publication Date: 2007-01-24
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. "Square-toothed" profile, the working section of this type of twin-screw pump rotor is rectangular or trapezoidal, and its sealing performance is poor

Method used

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  • Double screw mixed transport pump gear type
  • Double screw mixed transport pump gear type
  • Double screw mixed transport pump gear type

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Embodiment Construction

[0016] In the tooth profile of a twin-screw mixed-transport pump of the present invention, the profiles are composed of arc-arc envelopes and point meshing cycloids. In the main meshing area, focusing on reducing the area of ​​the leakage triangle, point meshing cycloids are adopted, including the first cycloid ab, the second cycloid fe, the first long-leg epicycloid bc, the second long-leg epicycloid ed, and the second long-leg epicycloid ed. The point b on the first cycloid ab and the point e on the second cycloid fe are on the pitch circle, and they are collinear at the center of the pitch circle; in other areas, focusing on shortening the length of the contact line and facilitating processing and manufacturing, arc- The circular arc envelope includes the concentric tooth bottom arc cd and tooth top arc af, the tooth bottom arc cd and the tooth top arc af are opposite, the two arcs are concentric with the pitch circle, and the radii are r, R and r'.

[0017] figure 1 It i...

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Abstract

Arc-arc envelope curve and cycloid of point gearing are adopted in molded lines of tooth form of twin-screw mix transportation pump. Cycloid of point gearing and long limb epicycloids are utilized in main region of engagement, and arc-arc envelope curve is utilized in other region. Molded lines utilized in the invention are accorded with principle of engagement, and relevant curves are adopted for characteristics in different region of engagement. Thus, the molded lines of tooth form of twin-screw mix transportation pump are suitable to transporting polyphase media in higher transportation pressure, and high gas rate. Features are: easy of production 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] In oil and natural gas extraction, oil and gas are usually associated. The traditional method is to separate the oil and gas and transport them separately. However, the oil and gas mixed transportation technology uses a multiphase pump that simultaneously performs multiphase mixed transportation to transport liquid and gas components at the same time. . Compared with traditional methods, it has obvious economic benefits, especially suitable for long-distance transportation. The twin-screw mixed pump has good characteristics, so it has been valued by the world's major oil companies. [0003] Rotor profile design is a key technology in the design of twin-screw mixed-transport pumps. At present, there are very few public reports on ...

Claims

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Application Information

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IPC IPC(8): F04C2/16
Inventor 邢子文李建风曹锋吴华根
Owner XI AN JIAOTONG UNIV
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