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Coaxial pump set double-pump converging working condition flow pulsation phase complementary structure

A dual-pump confluence, flow pulsation technology, used in pumps, pump components, machines/engines, etc.

Inactive Publication Date: 2020-06-30
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a flow pulsation phase complementarity structure in the coaxial pump group double-pump confluence working condition to solve the technical problem of how to reduce the flow pulsation at the outlet of the gear pump

Method used

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  • Coaxial pump set double-pump converging working condition flow pulsation phase complementary structure
  • Coaxial pump set double-pump converging working condition flow pulsation phase complementary structure
  • Coaxial pump set double-pump converging working condition flow pulsation phase complementary structure

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Embodiment Construction

[0019] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] This embodiment proposes a flow pulsation phase complementary structure in the confluence of two pumps of the coaxial pump set, such as figure 1 shown, including drive shaft 2 (eg figure 2 shown), driven shaft 3 (as image 3 Shown), the first gear pump group 4 and the second gear pump group 5. A pair of spur gears in each gear pump group are respectively connected to the keyway groups on the driving shaft 2 and the driven shaft 3 through a plurality of flat keys 6 .

[0021] In this embodiment, the driving shaft 2 and the driven shaft 3 have eight keyways respectively, and each spur gear is connected to the driving shaft 2 and the driven shaft 3 through four flat keys 6 respectively. The spur gears and keys i...

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Abstract

The invention provides a coaxial pump set double-pump converging working condition flow pulsation phase complementary structure. The structure comprises a driving shaft, a driven shaft, a first gear pump set and a second gear pump set, and a pair of spur gears in each gear pump set are connected with key groove sets in the driving shaft and the driven shaft through multiple keys respectively; a spline is arranged at one end of the driving shaft, the end face of the driving shaft on one side of the spline is taken as a datum plane, the driving shaft and the driven shaft are provided with a first key groove set close to the datum plane and used for installing the first gear pump set and a second key groove set away from the datum plane and used for installing second gear pump set, and a staggered phase angle exists between the first key groove set and the second key groove set. Through staggered tooth phase adjustment of the spur gears, so that the phase deviation exists in the meshing process of the two gear pumps, the peak-valley superimposition of the meshing stiffness of the spur gears is achieved, the meshing stiffness fluctuation coefficient is reduced, two flow pulsations arecaused to be counteracted from each other, and the outlet flow pulsation of the gear pumps is reduced.

Description

technical field [0001] The invention belongs to the technical field of pulsation complementation of coaxial pump sets, and in particular relates to a flow pulsation phase complementary structure of a coaxial pump set and two pumps in confluence working conditions. Background technique [0002] Because the oil between the gear meshing teeth of the gear pump is suddenly squeezed out, it is discontinuous, which is the root cause of the flow pulsation of the gear pump. In addition, the compressibility of the oil and the leakage of the gear pump will also cause flow pulsation. When the generated pulsation frequency is the same as the natural frequency of the hydraulic system, it will cause resonance of the hydraulic system, which will have a bad effect on the use of bearings and on pipe joints and seals, which will destroy the performance of the system and make the system The service life of each hydraulic component inside is shortened. [0003] External gear pumps are widely u...

Claims

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Application Information

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IPC IPC(8): F04C2/18F04C15/00
CPCF04C2/18F04C15/0049F04C2240/20
Inventor 罗小梅简洪超顾宏弢魏列江李娟潘嘉明姜宏暄韩颜莹强彦毛福合
Owner CHINA NORTH VEHICLE RES INST
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