【摘要】：齒輪泵是一種將機械能轉(zhuǎn)化為液壓能的機械裝置,它作為容積式液體輸送泵被廣泛應用于汽車、石油、化工、建筑等各行各業(yè)中,與其他類型油泵相比,具有結構簡單、重量輕、價格低、便于制造維修等優(yōu)點。但是由于排量小、困油嚴重、振動噪聲大、徑向力不平衡等缺點嚴重限制了齒輪泵在一些行業(yè)的應用。為了解決這些問題,本文提出了一種新型結構的棱桿式油泵,在一定程度上改善了普通外嚙合齒輪泵排量小和困油嚴重的缺點,擴大了應用范圍。本文在查閱大量相關文獻的基礎上,分析了齒輪泵的應用現(xiàn)狀,指出了研究棱桿式油泵的重要意義,展開了對棱桿式油泵的基礎理論研究。論文一共做了以下幾方面的研究: 在研究齒輪嚙合規(guī)律的基礎上,通過綜合分析外嚙合齒輪泵的工作原理,確定了棱桿式油泵的基本結構。為了方便與普通外嚙合齒輪泵做對比從而更好的說明棱桿式油泵的結構優(yōu)勢,論文結合KCB-83.3型齒輪泵的基本尺寸設計了轉(zhuǎn)子和腔體的結構尺寸。運用三維建模軟件CATIA建立了棱桿式油泵的三維實體圖并進模擬裝配和運動仿真,驗證了本文所設計的棱桿油泵進出油口位置合理并確保轉(zhuǎn)子工作過程不發(fā)生干涉行為。 為了捕捉棱桿式油泵內(nèi)部流場變化情況,本文對棱桿式油泵進行了流場動態(tài)仿真分析。運用計算流體動力學(CFD) Fluent軟件的動網(wǎng)格技術,選取合適的計算模型和計算方法,分析了進油過程和排油過程,得到轉(zhuǎn)子不同運轉(zhuǎn)位置瞬態(tài)的壓力場和速度場的分布情況。分析了棱桿式油泵轉(zhuǎn)子與腔體內(nèi)壁間隙、轉(zhuǎn)子中心距以及轉(zhuǎn)速對出口流速和流量的影響。經(jīng)研究發(fā)現(xiàn),在轉(zhuǎn)子與腔體內(nèi)壁間隙、轉(zhuǎn)子中心距一定的情況下,棱桿式油泵流量與轉(zhuǎn)速呈線性關系;轉(zhuǎn)子與腔體內(nèi)壁間隙以及轉(zhuǎn)子中心距控制在一定范圍內(nèi)時對流量影響較小,一旦超過這個范圍會導致流量下降。 最后,運用ANSYS Workbench軟件對棱桿式油泵的轉(zhuǎn)子和同步齒輪進行有限元分析,得出轉(zhuǎn)子和同步齒輪在極限工況下的應力應變情況。
文內(nèi)圖片：
圖片說明：外嚙合齒輪泵和內(nèi)嚙合齒輪泵工作原理
[Abstract]:the gear pump is a mechanical device for converting mechanical energy into hydraulic energy, And is convenient for manufacturing and maintenance and the like. However, the application of gear pump in some industries is severely restricted because of small displacement, severe oil, large vibration noise and imbalance of radial force. In order to solve these problems, a new type of ribbed oil pump is proposed in this paper. On the basis of consulting a large number of relevant literature, this paper analyzes the application status of the gear pump, and points out the significance of the research of the rib-bar type oil pump, and the basic theory research of the rib-type oil pump is carried out. The paper has made a total of the following aspects: On the basis of studying the meshing law of the gear, the basic structure of the prismatic oil pump is determined by comprehensively analyzing the working principle of the external meshing gear pump. In order to make a better comparison with the common external gear pump, the structure advantage of the prismatic oil pump is better explained. The structure of the rotor and the cavity is designed in combination with the basic dimensions of the KCB-83.3 gear pump. In this paper, the three-dimensional solid diagram of the prismatic oil pump is established by using the three-dimensional modeling software CATIA, and the simulation and assembly and motion simulation are simulated, and the position of the oil inlet and outlet of the ribbed oil pump designed in this paper is reasonable and the interference line does not occur in the working process of the rotor. in ord to capture that change of the internal flow field of the fin type oil pump, the flow field dynamic simulation of the fin type oil pump is carried out in this paper The dynamic grid technology of CFD Fluent software is used to select the appropriate calculation model and calculation method, and the oil inlet process and the oil discharge process are analyzed, and the pressure and velocity fields at different operating positions of the rotor are obtained. In that pap, the clearance between the rotor of the prismatic oil pump and the inner wall of the cavity, the center distance of the rotor and the flow rate and the flow rate of the rotating speed on the outlet are analyzed. The results show that the flow of the edge-rod type oil pump is linear with the rotation speed of the rotor and the inner wall of the cavity, and the clearance between the rotor and the inner wall of the cavity and the distance between the rotor center and the rotor are within a certain range. Smaller, once more than this can result in a flow In the end, the finite element analysis of the rotor and the synchronous gear of the prismatic oil pump is carried out by using the ANSYS Workbench software, and it is concluded that the rotor and the synchronous gear should be under the limit working condition.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH38

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本文編號：2511771