本文關(guān)鍵詞：HLPSL負(fù)載敏感性比例多路換向閥中二通壓力補(bǔ)償閥的特性研究　出處：《蘭州理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： HLPSL負(fù)載敏感性比例多路換向閥 二通壓力補(bǔ)償閥 流場(chǎng)仿真 負(fù)壓區(qū)域 動(dòng)態(tài)特性

【摘要】：二通壓力補(bǔ)償閥是負(fù)載敏感比例多路換向閥的關(guān)鍵元件,它決定了整個(gè)負(fù)載敏感比例多路換向閥的性能的好壞。對(duì)二通壓力補(bǔ)償閥的流場(chǎng)特性和動(dòng)態(tài)特性進(jìn)行研究,以此為依據(jù)來(lái)改進(jìn)多路閥的性能,具有一定的工程實(shí)用價(jià)值。 本文介紹了負(fù)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(bǔ)償閥的結(jié)構(gòu)和工作原理,同時(shí)推導(dǎo)了三種典型的節(jié)流槽的面積計(jì)算公式,并對(duì)二通壓力補(bǔ)償閥的閥口面積公式進(jìn)行了推導(dǎo)計(jì)算。 以HLPSL負(fù)載敏感性比例多路換向閥中的二通壓力補(bǔ)償閥為研究對(duì)象,應(yīng)用Pro/E軟件建立其流場(chǎng)的三維簡(jiǎn)化模型,并運(yùn)用GAMBIT對(duì)該流道模型進(jìn)行網(wǎng)格劃分。運(yùn)用FLUENT流場(chǎng)仿真軟件,對(duì)二通壓力補(bǔ)償閥的流道模型進(jìn)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(duì)二通壓力補(bǔ)償閥的壓力云圖的分析,找出負(fù)壓區(qū)域產(chǎn)生的主要部位,同時(shí)對(duì)二通壓力補(bǔ)償閥的相應(yīng)位置進(jìn)行結(jié)構(gòu)改進(jìn),以減少負(fù)壓區(qū)域的產(chǎn)生,建立改進(jìn)結(jié)構(gòu)后的二通壓力補(bǔ)償閥的流道模型,并對(duì)其壓力分布以及速度矢量分布進(jìn)行仿真分析,通過改進(jìn)前后壓力云圖以及速度矢量分布圖的對(duì)比分析,證明改進(jìn)后的二通壓力補(bǔ)償閥能夠達(dá)到消除負(fù)壓區(qū)域的目的,以及較改進(jìn)前的結(jié)構(gòu)而言,它具有響應(yīng)速度快的優(yōu)勢(shì)。 用AMEsim軟件對(duì)二通壓力補(bǔ)償閥進(jìn)行建模,對(duì)在不同參數(shù)下的該二通壓力補(bǔ)償閥的響應(yīng)特性進(jìn)行仿真分析,找出影響該閥動(dòng)態(tài)響應(yīng)特性的因素,并且通過改變參數(shù)來(lái)找出使該閥響應(yīng)特性較理想的一組參數(shù)。同時(shí),對(duì)該參數(shù)下的二通壓力補(bǔ)償閥的閥芯速度隨時(shí)間的變化曲線、位移隨時(shí)間的變化曲線以及閥芯受力隨時(shí)間的變化曲線進(jìn)行仿真分析,以研究該二通壓力補(bǔ)償閥的動(dòng)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(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TH134

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本文編號(hào)：1364591