Energy Efficiency Analysis and Redesign of Flow Regenerating Hydraulic Valve for High Negative Pressure Hydraulic Cylinder System

doi:10.7652/xjtuxb201907008

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Energy Efficiency Analysis and Redesign of Flow Regenerating Hydraulic Valve for High Negative Pressure Hydraulic Cylinder System

更新时间：2025-07-09

- Energy Efficiency Analysis and Redesign of Flow Regenerating Hydraulic Valve for High Negative Pressure Hydraulic Cylinder System
- Vol. 53, Issue 7, Pages: 52-59(2019)
- 作者机构：
  
  同济大学机械与能源工程学院,上海,201804
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201907008
  CLC： TU623+.5
- Online First：10 July 2019，
  
  Published：2019
- 稿件说明：
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Energy Efficiency Analysis and Redesign of Flow Regenerating Hydraulic Valve for High Negative Pressure Hydraulic Cylinder System[J]. 2019, 53(7): 52-59.
DOI：

Energy Efficiency Analysis and Redesign of Flow Regenerating Hydraulic Valve for High Negative Pressure Hydraulic Cylinder System[J]. 2019, 53(7): 52-59. DOI： 10.7652/xjtuxb201907008.

摘要

为解决高负压液压油缸系统存在的机器作业效率低与能量损耗大的问题

提出了高负压液压油缸系统流量再生液压阀再设计的方法。首先

以某土方机械油缸用常用液压阀为研究对象

通过析因分析可知

非再生流量回路的固定液阻参数对液压阀流量再生供油率的效应显著; 其次

对液压阀最大流量再生供油率较低的问题

提出将非再生流量回路固定液阻设计为可变液阻、且与再生流量回路可变液阻差动联控的方法; 最后

在所提方法的基础上

借助试验设计和响应面方法

实现以阀结构参数为设计变量、液压阀流量再生供油率最大化为优化目标的阀结构再设计。通过对2 000 h以上的小样本整机进行试验验证

结果表明

流量再生液压阀的供油率和工作装置快降作业效率分别提高了29%、27%以上

非再生流量理论能量损失减少了90%以上。该方法有效解决了油缸无杆腔高负压及其能量损耗问题

同时所提面向液阻差动联控的液压阀再设计理念与流程

对解决同类高负压液压油缸系统设计问题具有一定的工程意义。

Abstract

To solve the problem of low working efficiency and high energy loss caused by high negative pressure hydraulic cylinder systems

this paper proposes a method for redesigning the flow regenerating hydraulic valve in high negative pressure hydraulic cylinder system.Taking the common hydraulic valve used in a common type of earthmoving mechanical cylinder as the research object and using factorial analysis approach

it was found that the fixed liquid resistance parameter of the non-regenerative hydraulic circuit has a significant effect on the efficiency of flow regenerating hydraulic valve.To solve the problem of low oil supply efficiency

a novel method was proposed

which can change the fixed liquid resistance of the non-regenerative hydraulic circuit to a variable liquid resistance and hence forming a differential control combined with the variable liquid resistance of the regenerative hydraulic circuit.Based on the method

the structural redesign of the hydraulic valve

with four str

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references

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