全水润滑斜盘式海水轴向柱塞泵的研究
发布时间：2018-10-16 18:06
【摘要】：海水作为一种清洁无污染、不可燃、来源广泛且更容易储运的物质,是现代纯水液压中的理想传递介质。海水介质相对油液来说具有低粘度、高汽化压力等不同的理化特性,带来了更为严重的泄漏、磨损和腐蚀等亟待解决技术难题,严重制约了全水润滑海水轴向柱塞泵可靠性。鉴于国内海水轴向柱塞泵典型样机性能指标差,可靠性低,难以达到实用化的标准,课题组首次针对性开展海水轴向柱塞泵可靠性问题的研究工作。 全水润滑海水轴向柱塞泵可靠性问题主要是海水介质特殊的理化特性对海水泵可靠性提升的相关影响。主要包括:海水轴向柱塞泵零部件耐腐蚀可靠性、摩擦润滑可靠性和泄漏密封可靠性等。 本文研究了端面可压缩配流原理。以封闭加压型配流盘为研究对象,提出了更为精确的配流盘高压范围角和高压区柱塞个数增减关系的计算模型。通过Matlab仿真研究,分析了封闭加压角对高压范围角和高压区柱塞个数增减关系的影响规律 本文从理论上探索了封闭加压角对理论流量输出特性的影响,给出了理论输出流量的计算公式。在此基础上,考虑相关输入参数和结构尺寸参数随机性,运用机构运动学可靠性模型,研究了理论输出流量误差可靠性。计算结果表明,在设计尺寸公差下,理论输出流量误差可靠度为0.99723。 最后,设计制作了一台斜盘式海水轴向柱塞泵样机,并从结构和工艺进行了一系列改进。结构上,提出了新的缸内支撑轴承式结构,设计了一种固定安装于后端盖的固定式配流盘。工艺上,研究了摩擦副材料QPQ技术处理,开发了一种镶嵌注塑工艺用于滑靴和配流盘制作。
[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.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH322
本文编号：2275202
[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.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH322
【引证文献】
相关期刊论文 前1条
1 杨立洁;聂松林;张小军;张安庆;赵俊波;;全水润滑的斜盘式水液压柱塞马达的试验研究[J];北京工业大学学报;2013年07期
，本文编号：2275202
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