【摘要】：本文根據工程實踐所調研的參數(shù),結合實際生產環(huán)境及加工工藝性,首先提出了撈油抽子總體設計方案。其次對各部分機構有針對性的加以研究,通過ANSYS有限元中靜態(tài)結構力學與強度理論中屈服準則相結合的方法仿真校核了撈油抽子柱塞桿等核心構件。在此基礎上,基于機械振動力學相關知識建立了撈油抽子的有阻尼兩自由度線性系統(tǒng)強迫振動力學模型,通過模態(tài)分析方法求解撈油抽子的固有頻率、振型,以此確定撈油抽子正常工作時是否存在共振現(xiàn)象發(fā)生。對撈油抽子漏失量及密封橡膠筒所受摩擦力問題主要是以連續(xù)介質力學為理論基礎,具體落實到前面兩個問題分別以流體力學粘性流體流動、彈性力學作為工具,同時結合工況適當提出假設、建立相關模型最終通過試驗數(shù)據驗證。另一方面,研究內容是聯(lián)接機構在制動、啟動中所受動載荷與靜載荷之間的函數(shù)關系,通過能量守恒與材料力學知識相結合推導出兩類沖擊模型。最后,本文系統(tǒng)的對撈油抽子力學性能進了分析,闡述了所研究內容對原油生產、設備正常運行的意義。
[Abstract]:In this paper, according to the parameters investigated in engineering practice, combined with the actual production environment and processing technology, the overall design scheme of oil recovery pump is put forward. Secondly, through the research of each part of the mechanism, the method of combining static structural mechanics with yield criterion of strength theory in ANSYS finite element method is used to verify the core components such as the plunger rod. On this basis, based on the knowledge of mechanical vibration mechanics, a dynamic model of forced vibration of a two-degree-of-freedom linear system with damping is established, and the natural frequency and mode shape of the oil pump are solved by modal analysis method. In order to determine whether there is resonance phenomenon in the normal operation of the oil recovery pump. For the leakage of oil extractor and the friction of sealed rubber cylinder, the theoretical basis is mainly continuum mechanics, and the first two problems are carried out with fluid viscous fluid flow and elastic mechanics as tools, respectively. At the same time, the hypothesis is put forward according to the working condition, and the relevant model is finally verified by the test data. On the other hand, the research content is the functional relationship between the dynamic load and the static load in the braking and starting of the coupling mechanism. Through the combination of energy conservation and the knowledge of material mechanics, two kinds of impact models are derived. Finally, the mechanical properties of the oil pump are systematically analyzed, and the significance of the research content to the crude oil production and the normal operation of the equipment is expounded.
【學位授予單位】：長春理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE93

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本文編號：2293905