本文關鍵詞：HLPSL負載敏感性比例多路換向閥中二通壓力補償閥的特性研究　出處：《蘭州理工大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： HLPSL負載敏感性比例多路換向閥 二通壓力補償閥 流場仿真 負壓區(qū)域 動態(tài)特性

【摘要】：二通壓力補償閥是負載敏感比例多路換向閥的關鍵元件,它決定了整個負載敏感比例多路換向閥的性能的好壞。對二通壓力補償閥的流場特性和動態(tài)特性進行研究,以此為依據(jù)來改進多路閥的性能,具有一定的工程實用價值。 本文介紹了負載敏感比例多路換向閥的基本結(jié)構(gòu)和工作原理,以及二通壓力補償閥的結(jié)構(gòu)和工作原理,同時推導了三種典型的節(jié)流槽的面積計算公式,并對二通壓力補償閥的閥口面積公式進行了推導計算。 以HLPSL負載敏感性比例多路換向閥中的二通壓力補償閥為研究對象,應用Pro/E軟件建立其流場的三維簡化模型,并運用GAMBIT對該流道模型進行網(wǎng)格劃分。運用FLUENT流場仿真軟件,對二通壓力補償閥的流道模型進行了仿真分析,獲得不同參數(shù)下該閥的速度矢量分布圖以及壓力云圖。 通過對二通壓力補償閥的壓力云圖的分析,找出負壓區(qū)域產(chǎn)生的主要部位,同時對二通壓力補償閥的相應位置進行結(jié)構(gòu)改進,以減少負壓區(qū)域的產(chǎn)生,建立改進結(jié)構(gòu)后的二通壓力補償閥的流道模型,并對其壓力分布以及速度矢量分布進行仿真分析,通過改進前后壓力云圖以及速度矢量分布圖的對比分析,證明改進后的二通壓力補償閥能夠達到消除負壓區(qū)域的目的,以及較改進前的結(jié)構(gòu)而言,它具有響應速度快的優(yōu)勢。 用AMEsim軟件對二通壓力補償閥進行建模,對在不同參數(shù)下的該二通壓力補償閥的響應特性進行仿真分析,找出影響該閥動態(tài)響應特性的因素,并且通過改變參數(shù)來找出使該閥響應特性較理想的一組參數(shù)。同時,對該參數(shù)下的二通壓力補償閥的閥芯速度隨時間的變化曲線、位移隨時間的變化曲線以及閥芯受力隨時間的變化曲線進行仿真分析,以研究該二通壓力補償閥的動態(tài)性能。
[Abstract]:Two-way pressure compensation valve is a key component of load-sensitive multi-way reversing valve. It determines the performance of the whole load sensitive proportional multiplex valve. The flow field characteristics and dynamic characteristics of the two-way pressure compensation valve are studied to improve the performance of the multi-way valve. It has certain engineering practical value. This paper introduces the basic structure and working principle of load-sensitive proportional multi-way reversing valve, and the structure and working principle of two-way pressure compensation valve. At the same time, three typical formulas for calculating the area of throttling slot are derived. The formula of orifice area of two-way pressure compensation valve is deduced and calculated. Taking the two-way pressure compensation valve in HLPSL load-sensitivity proportional reversing valve as the research object, the three-dimensional simplified model of its flow field is established by using Pro/E software. The flow channel model is meshed by GAMBIT, and the flow channel model of two-way pressure compensation valve is simulated and analyzed by FLUENT flow field simulation software. The velocity vector distribution and pressure cloud diagram of the valve were obtained under different parameters. Through the analysis of the pressure cloud diagram of the two-way pressure compensation valve, the main position of the negative pressure region is found out. At the same time, the corresponding position of the two-way pressure compensation valve is improved to reduce the negative pressure area. The flow channel model of the improved two-way pressure compensation valve is established, and its pressure distribution and velocity vector distribution are simulated and analyzed, and the pressure cloud map and velocity vector distribution map before and after the improvement are compared and analyzed. It is proved that the improved two-way pressure compensation valve can eliminate the negative pressure region, and it has the advantage of fast response speed compared with the structure before the improvement. Using AMEsim software to model the two-way pressure compensation valve, the response characteristics of the two-way pressure compensation valve under different parameters are simulated and analyzed, and the factors that affect the dynamic response characteristics of the valve are found out. And by changing the parameters to find a set of parameters that make the response characteristics of the valve more ideal. At the same time, the valve core velocity changes with time for the two-way pressure compensation valve under the parameters. The change curve of displacement with time and the curve of stress of valve core with time were simulated and analyzed to study the dynamic performance of the two-way pressure compensation valve.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH134

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本文編號：1364591