本文選題：軸向柱塞泵　切入點(diǎn)：流體噪聲　出處：《西南交通大學(xué)》2011年碩士論文

【摘要】：在現(xiàn)代液壓傳動(dòng)中,軸向柱塞泵因其具有體積小、傳遞功率大(高轉(zhuǎn)速和高壓力)、效率高、變量控制方便、壽命長(zhǎng)等優(yōu)點(diǎn),被廣泛應(yīng)用于各種機(jī)械裝備中。隨著軸向柱塞泵向高壓、高速、大流量方向發(fā)展以及對(duì)其工作性能和環(huán)保要求不斷提高,噪聲問題日益凸顯,已成為制約軸向柱塞泵發(fā)展的重要因素。流體噪聲作為柱塞泵的主要噪聲源,與配流盤結(jié)構(gòu)有著密切關(guān)系,因此研究軸向柱塞泵配流盤結(jié)構(gòu),分析柱塞泵配流特性,對(duì)降低噪聲有著十分重要的意義。 文章以普什公司生產(chǎn)的斜盤式高壓軸向柱塞泵為研究對(duì)象,分析了軸向柱塞泵噪聲形成機(jī)理,明確了流體噪聲組成部分,將流量脈動(dòng)作為流體噪聲的主要研究對(duì)象,而流量脈動(dòng)主要由幾何流量脈動(dòng)與流量倒灌形成的壓力沖擊有關(guān)。在此理論指導(dǎo)下,建立了柱塞泵流量與壓力數(shù)學(xué)模型,考慮液壓油的可壓縮性,在STAR-CD中對(duì)流場(chǎng)進(jìn)行CFD解析,完成了以下內(nèi)容的分析研究：配流盤三角阻尼槽過流截面面積、預(yù)升壓(卸壓)區(qū)閉死角對(duì)軸向柱塞泵的壓力流量特性的影響。 論文主要結(jié)構(gòu)如下： 第一章,介紹了課題研究背景,對(duì)國內(nèi)外主要的柱塞泵研究機(jī)構(gòu)相關(guān)研究情況進(jìn)行了調(diào)研,綜述了該領(lǐng)域研究現(xiàn)狀,在此基礎(chǔ)上,明確了論文研究的內(nèi)容和目的； 第二章,簡(jiǎn)要說明了軸向柱塞泵工作原理,并分析了柱塞泵噪聲形成機(jī)理,重點(diǎn)研究流體噪聲的相關(guān)理論,確定流量脈動(dòng)為引起流體噪聲的主要組成部分； 第三章,建立柱塞泵幾何流量脈動(dòng)與壓力微分方程,并介紹了CFD仿真技術(shù); 第四章,針對(duì)軸向柱塞泵復(fù)雜的內(nèi)部流動(dòng)特性進(jìn)行了瞬態(tài)流場(chǎng)仿真。得到以下結(jié)論：在高壓軸向柱塞泵中,配流盤結(jié)構(gòu)采用80°左右的三角阻尼槽過流截面角、采用23°左右的預(yù)升壓(卸壓)區(qū)閉死角時(shí),可以得到理想的壓力流量特性,為今后設(shè)計(jì)低噪聲配流盤結(jié)構(gòu)提供了思路和方法； 第五章,根據(jù)得出的結(jié)論,設(shè)計(jì)了一種用于11柱塞泵的低噪聲配流盤,并進(jìn)行相應(yīng)條件下的流體仿真,驗(yàn)證了9柱塞泵低噪聲配流盤優(yōu)化方法對(duì)于設(shè)計(jì)用于11柱塞泵配流盤的適用性。同時(shí)對(duì)比了在相同結(jié)構(gòu)相同工況下9柱塞泵與11柱塞泵的配流特性,表明按照9柱塞泵低噪聲配流盤優(yōu)化方法設(shè)計(jì)出的11柱塞泵也具有良好的配流性能,該結(jié)論可作為目前普什正在研究的11柱塞數(shù)目軸向柱塞泵的設(shè)計(jì)參考。 最后對(duì)全篇論文主要研究工作進(jìn)行了總結(jié),給出了主要的研究結(jié)論,并對(duì)未來的研究工作進(jìn)行了展望。
[Abstract]:In modern hydraulic transmission, axial piston pump is widely used in various mechanical equipment because of its small volume, high transmission power (high speed and high pressure, high efficiency, convenient variable control, long life and so on).With the development of axial piston pump in the direction of high pressure, high speed and large flow, and the increasing demands on its working performance and environmental protection, the noise problem is becoming increasingly prominent, which has become an important factor restricting the development of axial piston pump.As the main noise source of piston pump, fluid noise is closely related to the structure of distribution disk. Therefore, it is very important to study the structure of distribution disk of axial piston pump and analyze the flow distribution characteristics of piston pump, which is of great significance to reduce the noise.Taking the oblique disc high pressure axial piston pump produced by Pushi Company as the research object, this paper analyzes the noise forming mechanism of axial piston pump, clarifies the component of fluid noise, and takes flow pulsation as the main research object of fluid noise.The flow pulsation is mainly related to the pressure shock formed by the flow backflow.Under the guidance of this theory, the mathematical model of flow rate and pressure of piston pump is established. Considering the compressibility of hydraulic oil, the flow field is analyzed by CFD in STAR-CD.The effect of closed dead angle in pressure-relief zone on pressure and flow characteristics of axial piston pump.The main structure of the thesis is as follows:In the first chapter, the research background is introduced, the related research situation of the main piston pump research institutions at home and abroad is investigated, and the current research situation in this field is summarized. On this basis, the content and purpose of the thesis are clarified.In the second chapter, the working principle of axial piston pump is briefly explained, and the mechanism of piston pump noise is analyzed. The relevant theory of fluid noise is studied, and the flow pulsation is determined as the main component of fluid noise.In the third chapter, the differential equations of flow fluctuation and pressure of piston pump are established, and the CFD simulation technology is introduced.In chapter 4, the transient flow field of axial piston pump is simulated.The conclusions are as follows: in the high pressure axial piston pump, the ideal pressure and flow characteristics can be obtained when the structure of the flow distribution disk adopts an angle of 80 擄or so of the triangular damping slot and a closed dead angle of 23 擄or so in the pressure-relief zone.It provides a way of thinking and method for the design of low-noise flow disk structure in the future.In the fifth chapter, according to the conclusion, a low noise flow distribution disk for 11 piston pump is designed, and the fluid simulation is carried out under the corresponding conditions.It is verified that the optimization method of low noise flow plate of 9 piston pump is applicable to the design of 11 piston pump.At the same time, the flow distribution characteristics of 9 piston pump and 11 piston pump under the same structure and same working condition are compared. It is shown that the 11 piston pump designed according to the low noise flow plate optimization method of 9 piston pump also has good flow distribution performance.This conclusion can be used as a reference for the design of 11 plunger number axial piston pump.Finally, the main research work of the whole paper is summarized, the main research conclusions are given, and the future research work is prospected.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH322

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 范長(zhǎng)庚;;采用油冷機(jī)給數(shù)字式伺服液壓馬達(dá)提供循環(huán)冷卻液的冷卻裝置[J];液壓氣動(dòng)與密封;2013年07期

相關(guān)碩士學(xué)位論文 前2條

1 張燃;35mL/r十一柱賽泵的特性研究[D];西南交通大學(xué);2012年

2 金梅;平衡式均流量軸向柱塞泵的理論研究[D];安徽理工大學(xué);2012年

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本文編號(hào)：1711078