全水润滑斜轴式海水柱塞泵可靠性研究

发布时间：2018-03-28 17:14

本文选题：水液压　切入点：斜轴式柱塞泵　出处：《华中科技大学》2011年硕士论文

【摘要】：以海水作为工作介质的海水液压传动技术是一种新型的绿色液压传动技术。由于该技术具有环保、安全、廉价等突出优点,在食品卫生、消防安全、水力喷射、海洋开发等领域具有广阔的运用前景,最近几十年内得到了迅猛发展,成为了当前流体传动与控制技术研究领域的热点之一。海水液压泵作为海水液压传动系统的核心动力元件,是发展海水液压传动技术的关键。本文通过对斜轴式海水柱塞泵进行运动学和动力学分析,阐明了其运动规律和工作特性,在此基础上分析关键摩擦副的失效机理和失效模式。对柱塞副、球窝副和轴承副通过材料和结构方面的对比完善,提出了提高关键摩擦副可靠性的措施。配流副对柱塞泵的容积效率起着至关重要的作用。本文针对采用浮动衬板结构的配流副提出一种新的设计计算方法,并将传统应力-强度干涉模型和可靠性计算中一次二阶矩方法结合,建立了配流副可靠性模型,运用此模型分析了配流副密封带尺寸对配流副可靠性的影响,提出了一种最佳的密封带尺寸公差组合方案。本文还通过绘制P-S-N曲线,对斜轴式海水柱塞泵的连杆进行了疲劳寿命的可靠性研究。最后根据斜轴式海水柱塞泵的研制特点,提出采用整机加速强化的方法进行海水柱塞泵的可靠性增长试验,并对斜轴式海水柱塞泵的可靠性试验作出规划,为水润滑斜轴式海水柱塞泵的成功研制奠定了基础。
[Abstract]:The seawater hydraulic transmission technology with seawater as the working medium is a new type of green hydraulic transmission technology. Because of its outstanding advantages of environmental protection, safety, low cost and so on, it is widely used in food hygiene, fire safety, hydraulic jet, etc. Ocean development and other fields have a broad application prospects, in recent decades has been rapid development, As the core power component of seawater hydraulic transmission system, seawater hydraulic pump is the key to develop seawater hydraulic transmission technology. In this paper, the kinematics and dynamics of the inclined shaft type seawater piston pump are analyzed, and its motion and working characteristics are expounded. On the basis of this, the failure mechanism and failure mode of the key friction pairs are analyzed. Through the comparison and perfection of material and structure, the measures to improve the reliability of the key friction pairs are put forward. The flow distribution pair plays an important role in the volumetric efficiency of the piston pump. This paper presents a new design and calculation method for the flow distribution pair with floating liner structure. Combining the traditional stress-strength interference model with the first-order second-order moment method in reliability calculation, the reliability model of the distribution pair is established, and the effect of the size of the sealing belt on the reliability of the distribution pair is analyzed by using this model. In this paper, an optimal combination scheme of size tolerance of sealing tape is proposed. In this paper, the reliability of fatigue life of the connecting rod of the inclined shaft seawater piston pump is studied by drawing the P-S-N curve. Finally, according to the characteristics of the development of the inclined shaft sea water piston pump, The reliability growth test of seawater piston pump is carried out by means of accelerating and strengthening the whole machine, and the reliability test of inclined shaft sea water piston pump is planned, which lays a foundation for the successful development of water lubricated inclined shaft sea water piston pump.
【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

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