【摘要】：齒輪泵的輕量化和流量脈動(dòng)的最小化是齒輪泵的兩個(gè)主要研究問題。本文以CBF-E型齒輪泵為研究對(duì)象，，應(yīng)用現(xiàn)代設(shè)計(jì)方法對(duì)齒輪泵進(jìn)行了輕量化設(shè)計(jì)，通過對(duì)齒輪泵的流量脈動(dòng)及計(jì)算流體仿真軟件的流場模擬技術(shù)的深入研究，分析模擬齒輪泵主要設(shè)計(jì)參數(shù)對(duì)齒輪泵流動(dòng)特性的影響。本文的主要內(nèi)容包括： (1)從齒輪泵的工作原理出發(fā)，簡要闡述了齒輪泵的主要結(jié)構(gòu)參數(shù)的計(jì)算方法以及在正常的工況下這些值的許用范圍，并以此為基礎(chǔ)建立了數(shù)學(xué)模型； (2)面向齒輪泵的空間最小體積，在模數(shù)選定的情況下求解已經(jīng)建立的數(shù)學(xué)模型。得到不同的模數(shù)對(duì)應(yīng)的最優(yōu)參數(shù)。形成三種備選方案； (3)對(duì)齒輪泵的流量脈動(dòng)進(jìn)行分析與研究，包括以下內(nèi)容： 1)從理論上推導(dǎo)了瞬時(shí)流量脈動(dòng)、最大瞬時(shí)流量、最小瞬時(shí)流量以及流量不均勻系數(shù)的計(jì)算方法； 2)通過設(shè)計(jì)四組試驗(yàn)，選用18種不同結(jié)構(gòu)參數(shù)的齒輪泵，計(jì)算了不同結(jié)構(gòu)參數(shù)齒輪泵的出口瞬時(shí)流量，繪制出出口處的流量脈動(dòng)曲線圖，分析了齒輪泵的齒數(shù)、模數(shù)、壓力角及重疊系數(shù)對(duì)齒輪泵輸出流量脈動(dòng)的影響； 3)應(yīng)用以上四組試驗(yàn)分析得到的結(jié)論，對(duì)三個(gè)面向輕量化的齒輪泵備選方案的出口流量脈動(dòng)特性進(jìn)行分析，綜合比較三種備選方案的流量脈動(dòng)特性，最終確定出流量脈動(dòng)特性最佳的設(shè)計(jì)方案。 (4)基于計(jì)算流體力學(xué)(CFD)軟件對(duì)齒輪泵內(nèi)部流場進(jìn)行數(shù)值模擬。包括以下內(nèi)容： 1)在齒輪泵的內(nèi)部流場的分析中采用動(dòng)網(wǎng)格技術(shù)以分析齒輪泵內(nèi)部流場隨齒輪軸轉(zhuǎn)角發(fā)生變化的規(guī)律； 2)基于fluent對(duì)齒輪泵的內(nèi)部流場進(jìn)行數(shù)值模擬。通過對(duì)三種備選方案分別進(jìn)行壓力場，速度場及齒間和進(jìn)出口處流線的分布狀態(tài)的仿真分析，得出不同設(shè)計(jì)方案的流場特性，為方案選擇提供支持。 論文的工作對(duì)基于現(xiàn)代設(shè)計(jì)方法實(shí)現(xiàn)齒輪泵的優(yōu)化設(shè)計(jì)提供了參考。
[Abstract]:The lightweight of gear pump and the minimization of flow pulsation are two main research problems of gear pump. In this paper, CBF-E gear pump is taken as the research object, and the lightweight design of gear pump is carried out by using modern design method. The flow pulsation of gear pump and the flow field simulation technology of computational fluid simulation software are deeply studied. The influence of the main design parameters of the simulated gear pump on the flow characteristics of the gear pump is analyzed. The main contents of this paper are as follows: (1) based on the working principle of gear pump, the calculation method of main structural parameters of gear pump and the allowable range of these values under normal working conditions are briefly described. On this basis, the mathematical model is established. (2) the space minimum volume of gear pump is used to solve the established mathematical model under the condition of modulus selection. The optimal parameters corresponding to different modulus are obtained. Forming three options; (3) the flow pulsation of gear pump is analyzed and studied, including the following contents: 1) the calculation methods of instantaneous flow pulsation, maximum instantaneous flow, minimum instantaneous flow and non-uniform coefficient of flow are derived theoretically; 2) through the design of four groups of tests, 18 kinds of gear pump with different structure parameters are selected, the instantaneous flow rate of gear pump with different structure parameters is calculated, the flow pulsation curve at the outlet is drawn, and the tooth number and modulus of gear pump are analyzed. The influence of pressure angle and overlap coefficient on the pulsation of output flow of gear pump; 3) based on the conclusion of the above four sets of experiments, the flow pulsation characteristics of the three gear pump options for lightweight are analyzed, and the flow pulsation characteristics of the three schemes are compared synthetically. Finally, the optimal design scheme of flow pulsation characteristic is determined. (4) numerical simulation of internal flow field of gear pump based on computational fluid dynamics (CFD) software. The main contents are as follows: 1) in the analysis of the internal flow field of gear pump, the dynamic grid technique is used to analyze the law of the change of the internal flow field with the angle of gear shaft; 2) numerical simulation of internal flow field of gear pump based on fluent. Through the simulation and analysis of the pressure field, velocity field and the distribution of flow lines between teeth and inlet and outlet, the flow field characteristics of different design schemes are obtained, which provide support for the scheme selection. The work of this paper provides a reference for the optimization design of gear pump based on modern design method.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH325

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 周毅鈞;欒振輝;;無嚙合力齒輪泵原理及其齒輪參數(shù)化設(shè)計(jì)[J];安徽大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年05期

2 陳文輝;液壓齒輪油泵噪聲的診斷與控制[J];安徽職業(yè)技術(shù)學(xué)院學(xué)報(bào);2005年01期

3 宋起躍,張立群,梁晉中;斜盤型軸向柱塞泵柱塞副受力分析[J];兵工學(xué)報(bào)(坦克裝甲車與發(fā)動(dòng)機(jī)分冊(cè));1999年03期

4 李威;王成兵;王小群;;外嚙合非對(duì)稱齒輪泵優(yōu)勢分析[J];北京科技大學(xué)學(xué)報(bào);2007年S2期

5 永青;負(fù)載感應(yīng)型泵控系統(tǒng)動(dòng)特性[J];北京科技大學(xué)學(xué)報(bào);1996年02期

6 陳琪,徐林林,李慶春,宋奇;高粘度齒輪泵結(jié)構(gòu)參數(shù)的優(yōu)化設(shè)計(jì)[J];北京石油化工學(xué)院學(xué)報(bào);2004年03期

7 孫莉;多功能流動(dòng)舞臺(tái)車液壓控制系統(tǒng)[J];長春大學(xué)學(xué)報(bào);2004年02期

8 尚春民,范景峰,張心明;兩種齒輪泵脈動(dòng)特性對(duì)比分析[J];長春理工大學(xué)學(xué)報(bào);2004年03期

9 劉國慶,孫國明;齒輪泵的異常噪聲問題[J];工程機(jī)械;1997年09期

10 黃春江;齒輪泵常見故障及其原因[J];工程機(jī)械與維修;2003年02期

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