【摘要】：海水作為一種清潔無(wú)污染、不可燃、來(lái)源廣泛且更容易儲(chǔ)運(yùn)的物質(zhì),是現(xiàn)代純水液壓中的理想傳遞介質(zhì)。海水介質(zhì)相對(duì)油液來(lái)說(shuō)具有低粘度、高汽化壓力等不同的理化特性,帶來(lái)了更為嚴(yán)重的泄漏、磨損和腐蝕等亟待解決技術(shù)難題,嚴(yán)重制約了全水潤(rùn)滑海水軸向柱塞泵可靠性。鑒于國(guó)內(nèi)海水軸向柱塞泵典型樣機(jī)性能指標(biāo)差,可靠性低,難以達(dá)到實(shí)用化的標(biāo)準(zhǔn),課題組首次針對(duì)性開(kāi)展海水軸向柱塞泵可靠性問(wèn)題的研究工作。 全水潤(rùn)滑海水軸向柱塞泵可靠性問(wèn)題主要是海水介質(zhì)特殊的理化特性對(duì)海水泵可靠性提升的相關(guān)影響。主要包括:海水軸向柱塞泵零部件耐腐蝕可靠性、摩擦潤(rùn)滑可靠性和泄漏密封可靠性等。 本文研究了端面可壓縮配流原理。以封閉加壓型配流盤(pán)為研究對(duì)象,提出了更為精確的配流盤(pán)高壓范圍角和高壓區(qū)柱塞個(gè)數(shù)增減關(guān)系的計(jì)算模型。通過(guò)Matlab仿真研究,分析了封閉加壓角對(duì)高壓范圍角和高壓區(qū)柱塞個(gè)數(shù)增減關(guān)系的影響規(guī)律 本文從理論上探索了封閉加壓角對(duì)理論流量輸出特性的影響,給出了理論輸出流量的計(jì)算公式。在此基礎(chǔ)上,考慮相關(guān)輸入?yún)?shù)和結(jié)構(gòu)尺寸參數(shù)隨機(jī)性,運(yùn)用機(jī)構(gòu)運(yùn)動(dòng)學(xué)可靠性模型,研究了理論輸出流量誤差可靠性。計(jì)算結(jié)果表明,在設(shè)計(jì)尺寸公差下,理論輸出流量誤差可靠度為0.99723。 最后,設(shè)計(jì)制作了一臺(tái)斜盤(pán)式海水軸向柱塞泵樣機(jī),并從結(jié)構(gòu)和工藝進(jìn)行了一系列改進(jìn)。結(jié)構(gòu)上,提出了新的缸內(nèi)支撐軸承式結(jié)構(gòu),設(shè)計(jì)了一種固定安裝于后端蓋的固定式配流盤(pán)。工藝上,研究了摩擦副材料QPQ技術(shù)處理,開(kāi)發(fā)了一種鑲嵌注塑工藝用于滑靴和配流盤(pán)制作。
[Abstract]:As a clean, non-combustible, widely available and easier to store and transport material, seawater is an ideal medium for modern pure water hydraulic system. Compared with oil, seawater medium has different physical and chemical properties, such as low viscosity, high vaporization pressure and so on, which brings more serious technical problems such as leakage, wear and corrosion, which seriously restricts the reliability of the whole water lubricated seawater axial piston pump. In view of the poor performance index and low reliability of the typical prototype of seawater axial piston pump in China, it is difficult to reach the practical standard, so the research work on reliability of seawater axial piston pump is carried out for the first time. The reliability of full water lubricated seawater axial piston pump is mainly due to the influence of the special physical and chemical properties of seawater medium on the reliability of sea water pump. Mainly include: seawater axial piston pump parts corrosion resistance reliability, friction lubrication reliability and leakage sealing reliability. In this paper, the principle of compressible end-face flow assignment is studied. A more accurate model for calculating the relationship between the angle of high pressure range and the number of plunger in high pressure zone is proposed. By means of Matlab simulation, the influence of closed pressure angle on the relation between the angle of high pressure range and the number of plunger in high pressure region is analyzed. In this paper, the influence of closed pressure angle on the theoretical flow output characteristics is explored theoretically. The formula of theoretical output flow is given. On this basis, considering the randomness of related input parameters and structural dimension parameters, the reliability of theoretical output flow error is studied by using the kinematics reliability model of the mechanism. The calculation results show that the reliability of the theoretical output flow error is 0.99723 under the design dimension tolerance. Finally, a prototype of an oblique disc seawater axial piston pump is designed and manufactured, and a series of improvements are made from the structure and process. In structure, a new type of support bearing structure in cylinder is proposed, and a fixed flow plate fixed on the rear end cover is designed. The processing of friction pair material QPQ was studied and a mosaic injection molding process was developed for making slipper and flow matching disc.
【學(xué)位授予單位】：華中科技大學(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 楊立潔;聶松林;張小軍;張安慶;趙俊波;;全水潤(rùn)滑的斜盤(pán)式水液壓柱塞馬達(dá)的試驗(yàn)研究[J];北京工業(yè)大學(xué)學(xué)報(bào);2013年07期

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本文編號(hào)：2275202