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End face flow-distribution type friction pair having dynamic pressure effect of water hydraulic pump or motor

A water-hydraulic and friction pair technology, applied in the hydraulic field, can solve the problems affecting the normal use and service life of water-hydraulic pumps and motors, being extremely easy to corrode and wear, and achieve the effects of high cost performance, improved performance and reliable performance.

Active Publication Date: 2016-10-12
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the distribution friction pair works in a water environment (especially in sea water) and is heavily loaded, it is very easy to corrode and wear, which will lead to failure, seriously affecting the normal use and service life of water hydraulic pumps and motors
Experts in related fields at home and abroad have been studying the problems existing in the water hydraulic pump and motor flow distribution friction pair, but the idea of ​​solving the problem is still to seek matching materials that meet the requirements of corrosion resistance, wear resistance and self-lubricating properties. These new materials Although good results have been achieved in terms of wear resistance, drag reduction and lubrication of friction pairs, how to further improve the lubricating capacity, load-bearing characteristics, friction and wear performance and life of water hydraulic pumps or motor distribution friction pairs is still a problem to be solved

Method used

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  • End face flow-distribution type friction pair having dynamic pressure effect of water hydraulic pump or motor
  • End face flow-distribution type friction pair having dynamic pressure effect of water hydraulic pump or motor
  • End face flow-distribution type friction pair having dynamic pressure effect of water hydraulic pump or motor

Examples

Experimental program
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Effect test

Embodiment 1

[0041] like Figure 4 As shown, the dynamic pressure support grooves are only arranged at equal distances on two circumferences that are concentric with the circumference of the axial hole flow channel and are arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on both sides of the circumference equal; in the circumferential direction, the dynamic pressure support groove is arranged between the adjacent axial hole flow channels; the dynamic pressure support groove is rhombic on the plane parallel to the friction surface; the angle between the side wall of the dynamic pressure support groove and the friction surface The value is within 30-90°, and in this embodiment, the value is 90°; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

Embodiment 2

[0043] like Figure 5 As shown, the dynamic pressure support grooves are only arranged at equal distances on two circumferences that are concentric with the circumference of the axial hole flow channel and are arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on both sides of the circumference equal; in the circumferential direction, the dynamic pressure support groove is arranged between the adjacent axial hole flow channels; the dynamic pressure support groove is rectangular on the plane parallel to the friction surface; the bottom of the dynamic pressure support groove is in the circumferential direction with the friction The included angle k of the surfaces is 0-30°. When k≠0, the bottom of the dynamic pressure support groove intersects the friction surface; in this embodiment, k=30°; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

Embodiment 3

[0045] like Image 6 As shown, the dynamic pressure support grooves are only arranged at equal distances on two circumferences that are concentric with the circumference of the axial hole flow channel and are arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on both sides of the circumference In the circumferential direction, the dynamic pressure support groove is arranged between the adjacent axial flow passages; the dynamic pressure support groove is a regular hexagon on the plane parallel to the friction surface; the side wall of the dynamic pressure support groove and the friction surface The included angle is within 30-90°, and in this embodiment, the value is 90°; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

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Abstract

The invention discloses an end face flow-distribution type friction pair, which has a dynamic pressure effect, of a water hydraulic pump or a motor. Further improving and increasing the lubricating ability, the bearing characteristics, the friction and wear properties and the life of the conventional flow-distribution type friction pair of the water hydraulic pump or the motor is of great significance. The end face flow-distribution type friction pair is characterized in that a plurality of concave pits are formed in either a friction surface of a flow-distribution body or a friction surface of a rotor body, and a plurality of dynamic pressure support grooves are formed in the other friction surface; the concave pits are distributed in a plurality of peripheries taking the center of the friction surface as the circle center and equally dividing the friction surface; the area of the concave pits in the friction surface is 3mm<2>; the greatest depth of the dynamic pressure support grooves is 0.1-3mm; the area of the dynamic pressure support grooves in the friction surface is 1-12mm<2>; and the distribution mode of the dynamic pressure support grooves adopts a bionic structure. The bionic structure is constructed on the friction surface of the flow-distribution body or the rotor body, the lubricating ability, and the lubricating ability, the bearing characteristics, and the friction and wear properties of the end face flow-distribution type friction pair are improved.

Description

technical field [0001] The invention belongs to the field of hydraulic technology, relates to a water hydraulic pump or a motor, and in particular relates to a new type of fluid distribution / rotor body friction pair based on dynamic pressure support. Background technique [0002] The water hydraulic pump or motor uses fresh water or sea water as the working medium, and can convert mechanical energy (hydraulic energy) into hydraulic energy (mechanical energy) to realize continuous rotary motion. important role. The distribution friction pair composed of the distribution fluid and the rotor body is one of the key friction pairs in the water hydraulic pump or motor distribution friction pair. The distribution fluid is a disc with a central through hole, and an axial hole flow channel coaxial with the central through hole is arranged on the friction surface between the central through hole and the outer peripheral surface; the rotor body corresponding to the friction surface of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03C2/00F04C15/00
CPCF03C2/00F04C15/00F04C15/0088F04C2240/20F04C2240/80
Inventor 王志强孙雨晴倪敬
Owner HANGZHOU DIANZI UNIV