油气润滑技术在高速纸机干燥部上的应用研究

发布时间：2018-03-18 22:16

本文选题：高速纸机　切入点：油气润滑技术　出处：《陕西科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：纸张需求量的快速增长，有力地推动了造纸机向着大型化、自动化、高速化的方向发展，然而高速纸机的润滑已成为限制其发展的一个重要方面，其主要体现在润滑系统复杂、油箱体积庞大、润滑油量大、需求的润滑油品质高、污染环境、安全隐患高等方面。现今的冶金、石油、重型机械等诸多领域，已经摒弃了传统的稀油润滑方式，多采用具有高效、环保、油膜承载能力大、能够自动化管理、提到产品的质量、安全环保的油气润滑技术，并且该技术在应用中取得了非常好的社会效益和经济效益。目前，油气润滑技术还没有在造纸行业加以应用，因此加强油气润滑技术应用到造纸干燥部的研究，以此解决现有高速纸机在传统稀油润滑系统下所面临的问题意义重大。本文围绕油气润滑技术的技术可行性、经济价值和应用范围等问题，以高速纸机干燥部的轴承润滑为研究对象展开应用技术研究。主要研究工作可总结如下： 1)从轴承润滑理论出发，对高速纸机干燥部轴承进行分析研究，建立了温度场数学模型，并确定了数学模型的理论求解方法以及求解过程。 2)依据油气润滑与传统稀油润滑机理对轴承内部的热量流向进行了对比研究，得出油气两相流润滑与稀油单相流润滑的本质区别。 3)采用商业软件Fluent进行油气两相流数值模拟分析，建立二维模拟模型，分析影响油气的可模拟参数；建立合理的三维目标参数评定标准，，探讨了影响润滑效果的相关参数，定性分析相关参数对两相流成型的影响，并验证三维目标评定标准的正确性。 4)通过对高速纸机干燥部常用轴承CARB进行简化，采用流体分析软件进行研究，研究在稀油润滑和油气润滑下轴承内部温度场的区别，初步确定油气润滑相对于稀油润滑存在的优势，并初步确定参数的优化方向。 5)依据纸机干燥部的实际工况参数，对高速纸机干燥部配备一套油气润滑系统，给定整个系统的工艺流程，以及系统关键部分的结构设计图，其主要包括：主站的结构设计、卫星站的结构设计、油气进出润滑点的设计、油气分离装置的设计。同时对此系统的控制监测与检测给出了工艺流程图，以及简单的控制方案。 6)根据纸机的实际工况，对纸机干燥部进行油气润滑系统的配置，并与稀油润滑系统进行经济对比分析，论证油气润滑技术在高速纸机上应用的经济优势。
[Abstract]:Rapid growth in paper demand, a strong impetus to the paper machine to large-scale, automated, high-speed, and lubrication of high speed paper machine has become an important aspect of limiting its development, which is mainly reflected in the lubrication system of oil tank is complex, large volume, large amount of lubricating oil, lubricating oil demand high quality, environmental pollution, safety hazards etc. nowadays metallurgy, petroleum, heavy machinery and other fields, have abandoned the traditional oil lubrication, the use of high efficiency, environmental protection, oil film bearing capacity, can automatic management, referred to the quality of the products, oil and gas lubrication technology in safety and environmental protection in the application of the technology, and achieved very good economic and social benefits. At present, the oil air lubrication technology has not been applied in papermaking industry, thus strengthening the application of oil gas lubrication technology to study the drying section of paper, to It is of great significance to solve the problems faced by the existing high speed paper machine under the traditional oil lubrication system.
Based on the technical feasibility, economic value and application scope of the oil and gas lubrication technology, the application technology research is carried out on the bearing lubrication of the drying part of high-speed paper machine. The main research work can be summarized as follows:
1) starting from the theory of bearing lubrication, the bearing of dry part of high-speed paper machine is analyzed and studied, and the mathematical model of temperature field is established, and the theoretical solution method and solving process of the mathematical model are determined.
2) according to the mechanism of oil and gas lubrication and traditional thin oil lubrication, the internal heat flow direction of bearing is comparatively studied, and the essential difference between oil gas two phase flow lubrication and thin oil single phase flow lubrication is obtained.
3) using the commercial software Fluent for oil-gas two-phase flow numerical simulation, a two-dimensional simulation model, analysis of the impact of oil and gas can be simulated to establish evaluation parameters; the reasonable parameters of the three-dimensional target standard, discusses the related parameters of lubricating effect, qualitative analysis of the effect of related parameters on the two-phase flow forming, and verification of 3D target evaluation standard.
4) based on the high speed paper machine commonly used bearing CARB are simplified using fluid analysis software research, study the difference in dilute oil lubrication and oil lubrication bearing internal temperature field, preliminary determination of oil air lubrication oil lubrication compared with the existing advantages, and determine the direction of optimization parameters.
5) according to the actual working parameters of the drying section of paper machine, the high speed paper machine is equipped with an oil air lubrication system, given the process of the whole system, and the structure design of the key part of the system diagram, which mainly include: the structure design of the master station, WeiXing Railway Station structure design, design of oil and gas import lubrication points. Oil and gas separation device design. Control monitoring and detection system are also in the process flow chart, and the control scheme is simple.
6) according to the actual working condition of the paper machine, the oil and air lubrication system is configured for the dryer part of the paper machine, and the economic analysis is compared with the thin oil lubrication system, and the economic advantage of the oil and gas lubrication technology on the high-speed paper machine is demonstrated.

【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH117.2

【相似文献】