【摘要】：作為液壓系統(tǒng)的核心部件，葉片泵因具有運(yùn)行平穩(wěn)、流量均勻、噪音小、體積小等特點(diǎn)而被廣泛應(yīng)用。為適應(yīng)現(xiàn)代液壓系統(tǒng)高效、節(jié)能、環(huán)保的要求，葉片泵必須提高自身性能，向高壓化、高效率化、耐久化、低噪聲化方向努力，滿(mǎn)足液壓系統(tǒng)的發(fā)展要求。 葉片泵在運(yùn)轉(zhuǎn)時(shí)，不可避免地會(huì)產(chǎn)生磨損的現(xiàn)象。特別在高壓情況下，，容易發(fā)生流量泄露、壓力脈動(dòng)、噪音大、液壓油溫過(guò)高等問(wèn)題，嚴(yán)重影響泵的性能和使用壽命。 本文選取雙作用葉片泵作為研究對(duì)象，針對(duì)其高壓化過(guò)程產(chǎn)生的溫升過(guò)快、泄漏加劇、效率低下等問(wèn)題，從摩擦學(xué)的角度進(jìn)行了實(shí)驗(yàn)分析與探討。 實(shí)驗(yàn)找出葉片泵摩擦最嚴(yán)重的部位（凸輪定子吸入口處）進(jìn)行重點(diǎn)觀察與分析，先后使用4種液壓油、3種不同厚度的葉片進(jìn)行實(shí)驗(yàn)，考察它們與葉片泵的入口油溫、吐出壓力、回轉(zhuǎn)速度、觀測(cè)點(diǎn)的溫升及效率間的相互關(guān)系。通過(guò)實(shí)驗(yàn)曲線分析出液壓油種類(lèi)、葉片厚度、出口壓力及轉(zhuǎn)速對(duì)觀測(cè)點(diǎn)溫度上升的影響，并得到了葉片厚度與機(jī)械效率極限值、溫度與體積效率、溫度與機(jī)械效率的理論關(guān)系及擬合曲線。 最后，針對(duì)實(shí)驗(yàn)中高壓運(yùn)轉(zhuǎn)時(shí)葉片泵噪音過(guò)大的現(xiàn)象，分別在泵的外壁側(cè)面及出口處安裝了3軸的加速度傳感器與小型壓力傳感器，采用小波包絡(luò)的方法，從流體噪音與機(jī)械振動(dòng)兩方面分析，發(fā)現(xiàn)葉片頂端與凸輪定子內(nèi)表面間的摩擦加劇是導(dǎo)致高壓下葉片泵噪音過(guò)大的主要原因。
[Abstract]:As the core component of hydraulic system, vane pump is widely used because of its characteristics of smooth operation, uniform flow, low noise and small volume. In order to meet the requirements of high efficiency, energy saving and environmental protection of modern hydraulic system, the vane pump must improve its own performance and make great efforts in the direction of high pressure, high efficiency, durability and low noise to meet the requirements of the development of hydraulic system. Vane pump in operation, will inevitably produce the phenomenon of wear. Especially under high pressure, flow leakage, pressure pulsation, high noise, high temperature of hydraulic oil and other problems are easy to occur, which seriously affect the performance and service life of the pump. In this paper, the double-acting vane pump is chosen as the research object, and the experimental analysis and discussion are carried out from the angle of tribology, aiming at the problems of excessive temperature rise, increased leakage and low efficiency caused by the high pressure vane pump. The most serious friction position of vane pump (inlet of cam stator) was found out in the experiment. Four kinds of hydraulic oil and three kinds of blades of different thickness were used successively to investigate the inlet oil temperature of vane pump. The relationship between exhaling pressure, velocity of rotation, temperature rise at observation point, and efficiency. The effects of hydraulic oil types, blade thickness, outlet pressure and rotational speed on the temperature rise at the observation point are analyzed through the experimental curves. The limit values of blade thickness and mechanical efficiency, temperature and volume efficiency are obtained. The theoretical relationship between temperature and mechanical efficiency and the fitting curve. Finally, aiming at the phenomenon of excessive noise of vane pump in high pressure operation, three axis acceleration sensors and small pressure sensors are installed on the side of the external wall and the outlet of the pump, respectively, and wavelet envelope method is used. From the analysis of fluid noise and mechanical vibration, it is found that the increase of friction between the tip of the blade and the inner surface of the cam stator is the main cause of the excessive noise of the vane pump under high pressure.
【學(xué)位授予單位】：大連交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH31

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 胡黃卿;液壓系統(tǒng)的節(jié)能設(shè)計(jì)探討[J];液壓與氣動(dòng);2001年05期

2 程軍圣,于德介;一種基于小波變換的包絡(luò)分析法[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年04期

3 王可,毛志O;基于Matlab實(shí)現(xiàn)最小二乘曲線擬合[J];北京廣播學(xué)院學(xué)報(bào)(自然科學(xué)版);2005年02期

4 陸廷海;溫度對(duì)液壓泵主要性能參數(shù)的影響[J];機(jī)械工程學(xué)報(bào);1994年03期

5 嚴(yán)光洪,束滋德;包絡(luò)分析法在某航行體振動(dòng)信號(hào)處理中的應(yīng)用[J];振動(dòng).測(cè)試與診斷;2000年03期

6 祁仁俊;液壓系統(tǒng)壓力脈動(dòng)的機(jī)理[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年09期

本文編號(hào)：2298087