JPCYJ系列直线式抽油机改进设计

发布时间：2018-07-01 11:12

本文选题：JPCYJ系列抽油机 + 开关磁阻调速电机(SRD)　；参考：《西北大学》2015年硕士论文

【摘要】：论文主要针对唐山宏冶集团生产的JPCYJ系列直线式抽油机设计与现场运行存在的问题进行了总结和改进。本文的创新点在于控制系统能对该型号抽油机即将出现的故障提前做出预判,防止事故的发生；在预判断失效后,控制系统能对故障进行处理,防止意外事故的发生,即“预防为主、防治结合”的总体方针。首先总结介绍了JPCYJ的基本情况。JPCYJ结构属于“砝码式”平衡,能实现精确的配重平衡,塔式结构能实现抽油机长冲程,这为抽油机节能提供了良好的条件。但是除优点之外,还列出了本抽油机在实际应中出现的一系列问题,后文主要围绕着一系列问题展开探讨。稍后论文分别对抽油机效率、抽油机机械部分和抽油机开关磁阻调速电机(SPD)进行了理论分析和描述,验证了JPCYJ系列抽油机系统设计的合理性和科学性。再针对抽油机在实际运行中出现的问题,对断带、断杆、抽油杆遇卡和刹车等进行深入的讨论与分析,提出在合适位置安装触碰开关以及监测电流、电机转速变化的解决方案。在抽油机机架的结构设计中,我们通过ANSYS计算,对塔架的强度和安全性进行了分析,提出了优化结果和改进建议。最后,为使系统顺利运行,对于前面的改进设计,需要在控制上做出相应的调整,增加了S7-200 CPU224cn PLC的数字量扩展模块EM221和模拟量扩展模块EM231来满足信息处理的需求,然后编写PLC梯形图程序。结果表明本系统改进合理,在改进后抽油机的塔架机械结构的强度、控制器、功率电路和软件的支持下,抽油机能够可靠稳定的运行,达到了预期的要求。
[Abstract]:This paper summarizes and improves the design and field operation of JPCYJ series linear pumping units produced by Tangshan Hongye Group. The innovation of this paper lies in the fact that the control system can prejudge the upcoming faults of the pumping unit and prevent the accidents. After the failure of the pre-judgment, the control system can deal with the faults and prevent the accidents from happening. That is, "prevention first, prevention combined" the overall policy. Firstly, the basic situation of JPCYJ is summarized. The structure of JPCYJ belongs to "weight balance", which can realize accurate balance of counterweight, and tower structure can realize long stroke of pumping unit, which provides a good condition for energy saving of pumping unit. But besides the advantages, this paper also lists a series of problems in the practical application of the pumping unit, and mainly discusses a series of problems. Later, the efficiency of pumping unit, the mechanical part of pumping unit and the switched reluctance motor (SPD) of pumping unit are analyzed and described theoretically, which verifies the rationality and scientific nature of the system design of JPCYJ series pumping unit. In view of the problems in the actual operation of the pumping unit, the paper makes a deep discussion and analysis on the broken belt, broken rod, sucker rod contact and brake, and puts forward a solution to install the touch switch and monitor the change of the current and motor speed in the proper position. In the structural design of the pumping unit frame, the strength and safety of the tower are analyzed by ANSYS calculation, and the optimization results and improvement suggestions are put forward. Finally, in order to make the system run smoothly, it is necessary to adjust the control in front of the improved design. The digital expansion module EM221 of S7-200 CPU224cn PLC and the analog expansion module EM231 are added to meet the needs of information processing. Then write PLC ladder diagram program. The results show that the system is improved reasonably. With the support of strength, controller, power circuit and software, the pumping unit can run reliably and stably, which meets the expected requirements.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE933.1

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