【摘要】：二通插裝閥有流動液阻小、動態(tài)響應(yīng)迅速、通油能力大、工作性能可靠、結(jié)構(gòu)簡單、易于集成化生產(chǎn)等特點,是大噸位工程機械液壓系統(tǒng)中的關(guān)鍵元件之一。當今世界工程機械領(lǐng)域?qū)Υ笮凸こ虣C械液壓系統(tǒng)的動作頻率、排量、控制精度和工作壓力等工作性能有了更高的要求,對液壓系統(tǒng)和元件的工作性能使用數(shù)值仿真方法進行計算機模擬實驗,將成為工程機械設(shè)計中必不可少的步驟。國內(nèi)工程機械液壓元件的研究正處于起步階段,如高壓齒輪泵、控制閥等液壓元件的特性研究等許多基礎(chǔ)性的工作有待進一步深化,而大通徑二通插裝閥的動靜態(tài)特性在這些基礎(chǔ)性研究工作的范圍內(nèi)。 論文以振動壓路機振動閥中的插裝溢流閥系統(tǒng)為研究對象,根據(jù)流體力學理論計算振動溢流閥的靜態(tài)性能,利用流體仿真軟件FLUENT進行數(shù)值仿真模擬實驗,并輔以正交實驗法進行試驗數(shù)據(jù)處理,根據(jù)仿真實驗得出插裝溢流閥內(nèi)部流道的流場分布,從而確定影響插裝溢流閥液阻的主要因素,根據(jù)FLUENT與正交試驗得出的優(yōu)化方案。 建立閥芯運動方程、閥腔連續(xù)性方程、阻尼孔連續(xù)性方程,并通過建立AMESIM模型,對插裝溢流閥的動態(tài)性能進行仿真優(yōu)化。本文探討了主閥阻尼孔直徑、前腔體積、主閥腔體積、蓋板阻尼孔直徑、蓋板腔體積、先導閥阻尼直徑、先導進口腔的體積等參數(shù)對插裝溢流閥動態(tài)特性的影響。 通過本文工作,為利用仿真試驗與物理試驗相結(jié)合的方法,進行大噸位工程機械液壓元件特性等基礎(chǔ)性的研究工作,提供了可借鑒的研究方法和思路。
[Abstract]:Two-way cartridge valve is one of the key components in hydraulic system of large-tonnage construction machinery because of its characteristics such as small flow resistance, rapid dynamic response, large oil flow capacity, reliable working performance, simple structure and easy integrated production. Nowadays, in the field of construction machinery, the working performance of hydraulic system of large-scale construction machinery is required to be higher, such as the working frequency, displacement, control precision and working pressure, etc. Using numerical simulation method to simulate the working performance of hydraulic system and components will be an indispensable step in the design of construction machinery. The research of hydraulic components of construction machinery in China is in its infancy, such as the characteristic study of hydraulic components such as high-pressure gear pumps, control valves, and so on, and many basic works need to be further deepened. The dynamic and dynamic characteristics of the two way cartridge valve with Chase diameter are within the scope of these basic research work. Based on the theory of fluid mechanics, the static performance of vibration relief valve is calculated, and the numerical simulation experiment is carried out by using fluid simulation software FLUENT. The experimental data were processed by orthogonal experiment method, and the flow field distribution of the internal channel of the plug relief valve was obtained according to the simulation experiment. The main factors affecting the liquid resistance of the plug relief valve were determined, and the optimized scheme was obtained according to the FLUENT and orthogonal test. The motion equation of valve core, the continuity equation of valve cavity and the continuity equation of damping hole are established, and the dynamic performance of plug relief valve is simulated and optimized by establishing AMESIM model. In this paper, the influence of the main valve damping hole diameter, the front cavity volume, the main valve cavity volume, the cover plate damping hole diameter, the cover plate cavity volume, the pilot valve damping diameter and the leading mouth volume on the dynamic characteristics of the inserted relief valve are discussed. Through the work of this paper, the research methods and ideas can be used for reference for the basic research work such as the characteristics of hydraulic components of large tonnage construction machinery by using the method of combining simulation test with physical test.
【學位授予單位】：天津理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH137.52

【引證文獻】

相關(guān)碩士學位論文 前1條

1 洪威;無壓力超調(diào)溢流閥設(shè)計與特性研究[D];西南交通大學;2013年

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本文編號：2249469