通用锂基润滑脂输送特性的实验研究
发布时间：2019-02-11 16:34
【摘要】：本课题通过查阅大量的文献,对润滑脂相关理论知识进行了系统学习,搭建了试验台,通过在高压喷射状态与低压流动状态下对五种不同锂皂纤维含量的通用锂基润滑脂与压力损失的关系进行实验研究,得出了润滑脂皂纤维含量对压力损失的影响规律。润滑脂是一种性质极其复杂多变的物质,所以本文首先对润滑脂的理化性质,结构组成,流变特性,流变方程以及管道内流动特性等等进行了深入的理论研究。然后设计实验原理图,同时进行压力变送器进行标定实验,学习管路连接知识,设计管路连接方案,并用SOLIDWORKS进行实验系统管路连接的三维建模,并最终根据实验原理图搭建试验台。在润滑脂输送特性的试验中,通过在室温下,对含有不同皂纤维含量的00#、0#、1#、2#以及3#五种通用锂基润滑脂在高压喷射状态与低压流动状态下的压力损失规律进行研究,并对测得的数据利用MATLAB拟合曲线,得到两种状态下压力变化曲线和压力损失变化曲线,从中得到如下结论:(1)高压喷射状态较低压流动状态压力波动大,且随着皂纤维的增多,几种脂在高压喷射状态下工作压力不断增加,并在3号锂基脂处工作压力达到最大,达到 18.7MPa。(2)无论在高压喷射状态还是低压流动状态下,随着皂纤维含量的增加,压力损失ΔP呈现上升趋势。(3)无论在高压喷射状态还是低压流动状态下,润滑脂皂纤维含量比较低时,压力损失增加的速率比较慢,随着皂纤维含量的增加,压力损失上升的速率变快,所以皂纤维越多对压力损失的影响越明显。(4)随着皂纤维的增多,每种脂所对应的的高压喷射状态与低压流动状态压力损失ΔP的差值逐渐减小。
[Abstract]:Through consulting a large number of documents, the subject has systematically studied the relevant theoretical knowledge of grease and built a test bed. The relationship between pressure loss and five kinds of general lithium grease with different lithium-soap fiber content was studied under the condition of high pressure injection and low pressure flow, and the influence law of grease soap fiber content on pressure loss was obtained. Grease is a very complex and changeable material, so the physical and chemical properties, structure composition, rheological properties, rheological equation and flow characteristics of lubricating grease are studied deeply in this paper. Then design the experimental schematic diagram, carry on the calibration experiment of the pressure transmitter at the same time, study the knowledge of the pipeline connection, design the pipeline connection plan, and use SOLIDWORKS to carry on the three-dimensional modeling of the pipeline connection of the experimental system. Finally, the test bench is built according to the experimental schematic diagram. In the test of lubricating grease transport characteristics, at room temperature, 00#0 #1 #1 containing different soap-fiber content, The pressure loss laws of five kinds of general lithium grease under high pressure injection state and low pressure flow state were studied, and the measured data were fitted by MATLAB curve. The curves of pressure change and pressure loss in two states are obtained. The conclusions are as follows: (1) the pressure fluctuation in high pressure injection state is larger than that in low pressure flow state, and with the increase of soap fiber, The working pressure of several kinds of lipids increases continuously under the condition of high pressure injection, and the working pressure reaches the maximum at lithium-based grease No. 3, reaching 18.7 MPA 路(2). (2) with the increase of soap fiber content, the pressure of several kinds of lipids is increased with the increase of soap-fiber content in both high pressure injection state and low pressure flow state. The pressure loss 螖 P shows an upward trend. (3) when the content of grease soap fiber is low, the increasing rate of pressure loss is slower, with the increase of soap fiber content. The pressure loss increases faster, so the more soap fiber, the more the pressure loss. (4) with the increase of soap fiber, the difference of pressure loss 螖 P between the high-pressure jet state and low-pressure flow state of each kind of fat decreases gradually.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE626.4
本文编号：2419906
[Abstract]:Through consulting a large number of documents, the subject has systematically studied the relevant theoretical knowledge of grease and built a test bed. The relationship between pressure loss and five kinds of general lithium grease with different lithium-soap fiber content was studied under the condition of high pressure injection and low pressure flow, and the influence law of grease soap fiber content on pressure loss was obtained. Grease is a very complex and changeable material, so the physical and chemical properties, structure composition, rheological properties, rheological equation and flow characteristics of lubricating grease are studied deeply in this paper. Then design the experimental schematic diagram, carry on the calibration experiment of the pressure transmitter at the same time, study the knowledge of the pipeline connection, design the pipeline connection plan, and use SOLIDWORKS to carry on the three-dimensional modeling of the pipeline connection of the experimental system. Finally, the test bench is built according to the experimental schematic diagram. In the test of lubricating grease transport characteristics, at room temperature, 00#0 #1 #1 containing different soap-fiber content, The pressure loss laws of five kinds of general lithium grease under high pressure injection state and low pressure flow state were studied, and the measured data were fitted by MATLAB curve. The curves of pressure change and pressure loss in two states are obtained. The conclusions are as follows: (1) the pressure fluctuation in high pressure injection state is larger than that in low pressure flow state, and with the increase of soap fiber, The working pressure of several kinds of lipids increases continuously under the condition of high pressure injection, and the working pressure reaches the maximum at lithium-based grease No. 3, reaching 18.7 MPA 路(2). (2) with the increase of soap fiber content, the pressure of several kinds of lipids is increased with the increase of soap-fiber content in both high pressure injection state and low pressure flow state. The pressure loss 螖 P shows an upward trend. (3) when the content of grease soap fiber is low, the increasing rate of pressure loss is slower, with the increase of soap fiber content. The pressure loss increases faster, so the more soap fiber, the more the pressure loss. (4) with the increase of soap fiber, the difference of pressure loss 螖 P between the high-pressure jet state and low-pressure flow state of each kind of fat decreases gradually.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE626.4
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