本文關(guān)鍵詞：基于永磁彈簧的單向閥性能研究　出處：《昆明理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 液壓系統(tǒng) 單向閥 磁性材料 永磁彈簧 特性分析

【摘要】：單向閥作為液壓系統(tǒng)中的基本元件,廣泛應(yīng)用于液壓泵保護(hù)、防止油流干擾、保壓、鎖閉液壓缸等,其性能的優(yōu)劣、工作的可靠性及壽命長短直接影響液壓系統(tǒng)的安全性。彈簧是單向閥中的重要部件,機(jī)械彈簧常因疲勞、斷裂、松弛、塑性變形等失效模式而影響單向閥的正常工作。近年來,隨著材料技術(shù)的發(fā)展,磁性材料得到了廣泛應(yīng)用。磁性彈簧具有結(jié)構(gòu)簡單、力傳遞路線短、無疲勞磨損等優(yōu)點(diǎn),將其應(yīng)用于單向閥取代機(jī)械彈簧以提高單向閥的啟閉特性,減少壓力損失,降低噪音和振動,延長使用壽命。本文介紹了單向閥的分類及研究現(xiàn)狀,概述了彈簧的分類及永磁彈簧的研究現(xiàn)狀。介紹了磁性材料的分類、磁性材料基本參量、磁物理論及磁力計算理論。利用磁性材料“同性相斥,異性相吸”的原理,分別設(shè)計了斥力永磁彈簧單向閥和引力永磁彈簧單向閥,并合理選擇了單向閥各部件材料。利用ANSYS中FLUENT模塊對永磁彈簧單向閥流場進(jìn)行了仿真分析,針對出現(xiàn)的小面積旋渦進(jìn)行了結(jié)構(gòu)改進(jìn),結(jié)果證明,設(shè)計的永磁彈簧單向閥結(jié)構(gòu)合理,避免氣穴和氣蝕的產(chǎn)生。通過泄漏特性試驗驗證了所設(shè)計的兩種永磁彈簧單向閥可靠性。通過試驗不同開啟壓力下機(jī)械彈簧單向閥和兩種永磁彈簧單向閥的流量大小,驗證斥力永磁彈簧單向閥開啟壓力最小,反應(yīng)最為靈敏,引力彈簧單向閥開啟速度稍慢于斥力永磁彈簧單向閥,機(jī)械彈簧單向閥開啟速度最慢。通過壓力-流量特性試驗,驗證兩種永磁彈簧單向閥比機(jī)械彈簧單向閥開啟速度快,引力永磁彈簧單向閥壓力損失最小,機(jī)械彈簧單向閥壓力損失最大,進(jìn)而驗證永磁彈簧單向閥更為節(jié)能高效,提高了單向閥性能與壽命。
[Abstract]:As a basic component of hydraulic system, one-way valve is widely used in hydraulic pump protection, to prevent oil flow interference, keep pressure, lock hydraulic cylinder, its performance is good and bad. Working reliability and life span directly affect the safety of hydraulic system. Spring is an important part of one-way valve, mechanical spring is often due to fatigue, fracture, relaxation. In recent years, with the development of material technology, magnetic material has been widely used. Magnetic spring has simple structure and short force transfer route. In order to improve the opening and closing characteristics, reduce the pressure loss and reduce the noise and vibration, the unidirectional valve is used to replace the mechanical spring in order to improve the opening and closing characteristics of the one-way valve. This paper introduces the classification and research status of unidirectional valve, summarizes the classification of spring and the research status of permanent magnet spring, and introduces the classification of magnetic material and the basic parameters of magnetic material. Magnetic physics and magnetic force calculation theory. The repulsive permanent magnet spring unidirectional valve and gravitational permanent magnet spring unidirectional valve are designed by using the principle of "the same sex repel and the opposite attraction". The flow field of permanent magnet spring unidirectional valve is simulated and analyzed by FLUENT module in ANSYS, and the structure of small area vortex is improved. The results show that the structure of the permanent magnet spring one-way valve is reasonable. To avoid cavitation and cavitation. The reliability of the two kinds of permanent magnet spring one-way valve is verified by the leakage characteristic test. The flow rate of mechanical spring one-way valve and two permanent magnet spring one-way valve are tested under different open pressure. Size. Verify the repulsive force permanent magnet spring one-way valve opening pressure minimum, the most sensitive response, gravity spring one-way valve opening speed slightly slower than the repulsion force permanent magnet spring one-way valve. The mechanical spring one-way valve opened the slowest speed. Through the pressure-flow characteristic test, it was proved that the two kinds of permanent magnet spring one-way valve opened faster than the mechanical spring one-way valve, and the gravity permanent magnet spring one-way valve had the least pressure loss. The pressure loss of mechanical spring unidirectional valve is the biggest, and it is proved that permanent magnet spring one-way valve is more energy saving and efficient, and improves the performance and life of unidirectional valve.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TH137.52

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本文編號：1429659