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Method for dynamically optimizing structure of valve plate of aviation plunger pump based on instantaneous flow model

An instantaneous flow and dynamic optimization technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low static optimization efficiency and falling into local optimum, and achieve good global optimality and high efficiency.

Inactive Publication Date: 2012-01-11
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of low static optimization efficiency of the current plunger pump distribution plate structure and easy to fall into local optimum, and provide a dynamic optimization method for the aviation plunger pump distribution plate structure based on the instantaneous flow model

Method used

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  • Method for dynamically optimizing structure of valve plate of aviation plunger pump based on instantaneous flow model
  • Method for dynamically optimizing structure of valve plate of aviation plunger pump based on instantaneous flow model
  • Method for dynamically optimizing structure of valve plate of aviation plunger pump based on instantaneous flow model

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Embodiment

[0069] The dynamic optimization method of the valve plate structure of the aviation plunger pump based on the instantaneous flow model is used to dynamically optimize the structure of the valve plate of a certain type of aviation plunger pump. The structural parameters and working parameters of the aviation plunger pump are as follows: plunger distribution circle radius R=40mm, plunger number Z=9, pump speed n=3000r / min, plunger radius r=10mm, swash plate inclination angle β=18 , Oil density ρ=900kg / m 3 , oil bulk modulus E=1000MPa, oil discharge cavity pressure P d =28MPa, the initial volume of the plunger chamber V 0 =18143mm 3 , the flow coefficient C of the orifice d =0.6, leakage coefficient k=0.95, mismatch angle θ 0 =14°, damping hole radius r 20 =1.5mm, the arc radius r at the end of the plunger oil groove 1 =5mm, the arc radius r at the top of the plunger oil discharge window 3 =5mm, four angles

[0070] The specific implementation plan is as follows:

[00...

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Abstract

The invention discloses a method for dynamically optimizing the structure of a valve plate of an aviation plunger pump based on an instantaneous flow model. The method is established on the basis of the instantaneous flow model of the aviation plunger pump, and comprises the following steps of: selecting the radius r2 and the shift angle theta of a shock relief vent as the design variables for the dynamic structure optimization of the valve plate of the aviation plunger pump; randomly generating two groups of initial parameter vectors and substituting the initial parameter vectors into the instantaneous flow model of the aviation plunger pump to obtain instantaneous flow values of the aviation plunger pump under the two groups of parameter vectors; selecting the instantaneous flow pulse amplitude of the aviation plunger pump as a target function, comparing two target function values F(XL) and F(XH) and modifying structure parameters in real time through rotation transformation and contraction transformation to finally obtain the optimized structure parameters under the least instantaneous flow pulse amplitude. The invention provides more accurate instantaneous flow model of the aviation plunger pump for the dynamic structure optimization of the valve plate of the aviation plunger pump, evaluates the target function in real time, is a dynamic optimizing process and has very high efficiency and overall optimizing capability.

Description

technical field [0001] The invention belongs to the research field of structural optimization of aviation plunger pumps, and in particular relates to a method for dynamically optimizing the structure of a distribution plate of aviation plunger pumps based on an instantaneous flow model. Background technique [0002] Axial piston pumps are widely used in aviation hydraulic pump source systems due to their high power, high efficiency and reliability. However, due to factors such as its own structure and the compressibility of the oil, the aviation plunger pump must have instantaneous flow pulsation, and the flow pulsation is the fundamental cause of the fluid noise and pressure shock of the plunger pump. This pressure shock will make the system work Instability or even resonance occurs, causing serious damage to the components of the system. There are many factors affecting the flow pulsation of the aviation plunger pump, among which the structural parameters of the valve pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 焦宗夏官长斌
Owner BEIHANG UNIV
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