水基動力無桿抽油機關鍵部件故障診斷方法研究
發(fā)布時間：2018-10-19 15:39
【摘要】：水基動力無桿抽油機是一種利用液動力推動井下抽油泵工作的新型抽油設備，具有高效率、低功耗的特點，并且能夠徹底消除傳統(tǒng)抽油機存在的桿管偏磨問題，因此具有廣闊的應用前景。對其進行狀態(tài)檢測以及故障診斷的研究，能夠保障設備的安全、穩(wěn)定運行，提高設備的生產(chǎn)效率，具有重要的理論意義和工程應用價值。 本文主要的研究內(nèi)容及創(chuàng)新點如下： （1）對水基動力無桿抽油機關鍵部件——動力缸進行了動力學研究，推導了動力缸的運動學方程，建立了不同故障下動力缸運動學組合參數(shù)變化與故障之間的映射關系，，提出了利用動力缸組合參數(shù)變化判斷故障類型的方法。該方法能夠揭示水基動力無桿抽油機動力缸的故障類型，為其故障診斷提供了理論基礎。 （2）探討了HMM在水基動力無桿抽油機故障診斷中應用的可行性，開展了基于HMM的水基動力無桿抽油機故障診斷方法的研究，并給出了故障診斷的流程。采用HMM方法對水基動力無桿抽油機正常生產(chǎn)以及動力液管漏失、游動凡爾堵塞、配重磨損、固定凡爾堵塞四種故障進行了故障診斷，結(jié)果表明：該方法適合對水基動力無桿抽油機進行故障診斷，并能取得較高的故障診斷準確率。 （3）研究基于高階累積量譜的水基動力無桿抽油機故障診斷方法，將2.5維譜引入到故障診斷中，提出了融合2.5維譜與HMM的水基動力無桿抽油機故障診斷方法。應用該方法與單獨應用HMM進行故障診斷的對比實驗表明：融合2.5維譜的HMM的水基動力無桿抽油機故障診斷方法不僅具有更高的故障診斷準確率，并且在模型訓練速度上也有很大的提升。 （4）構建了水基動力無桿抽油機試驗臺，設計了試驗臺的電路控制系統(tǒng)與人機交互界面，利用該試驗臺可以模擬水基動力無桿抽油機正常工作狀態(tài)以及多種故障狀態(tài)。研制了一套水基動力無桿抽油機狀態(tài)監(jiān)測與故障診斷的仿真系統(tǒng)，該系統(tǒng)可以模擬井下工作狀態(tài)，便于直觀觀察井下各關鍵部件的運行狀態(tài)，為水基動力無桿抽油機狀態(tài)檢測及故障診斷提供了可視化手段。
[Abstract]:The water-based rodless pumping unit is a new type of pumping equipment which uses hydraulic power to promote the underground pumping pump work. It has the characteristics of high efficiency and low power consumption, and can completely eliminate the problem of rod and pipe bias wear existing in the traditional pumping unit. Therefore, it has a broad application prospect. The research of state detection and fault diagnosis can ensure the safety and stability of the equipment and improve the production efficiency of the equipment. It has important theoretical significance and engineering application value. The main contents and innovations of this paper are as follows: (1) the dynamics of the power cylinder, the key component of the water-based rodless pumping unit, is studied, and the kinematics equation of the cylinder is derived. The mapping relationship between the variation of kinematics combined parameters of power cylinder and the fault under different faults is established, and the method of judging the fault type by using the variation of combined parameters of power cylinder is put forward. This method can reveal the fault types of the power cylinder of the water-base rodless pumping unit and provide a theoretical basis for its fault diagnosis. (2) the feasibility of the application of HMM in the fault diagnosis of the water-base rodless pumping unit is discussed. The research on fault diagnosis method of water-based rod-less pumping unit based on HMM is carried out, and the flow chart of fault diagnosis is given. In this paper, HMM method is used to diagnose four kinds of faults, such as normal production of water base power rod pumping unit, leakage of power hydraulic pipe, swam plug, counterweight wear, fixed fan clogging, etc. The results show that this method is suitable for fault diagnosis of water-based rodless pumping units, and can achieve high accuracy. (3) A fault diagnosis method for water-based rodless pumping units based on higher-order cumulant spectrum is studied. A method for fault diagnosis of water-based rodless pumping units is proposed, which combines 2.5 dimension spectrum with HMM. The comparison between this method and the single application of HMM in fault diagnosis shows that the fault diagnosis method of hydrodynamic rod less pumping unit based on HMM with 2.5 D spectrum has higher fault diagnosis accuracy. And the speed of model training is also greatly improved. (4) the test bench of water-base rodless pumping unit is constructed, and the circuit control system and man-machine interface of the test bed are designed. The test rig can be used to simulate the normal working state and various fault states of water-based rodless pumping units. A simulation system for condition monitoring and fault diagnosis of water-based rodless pumping unit is developed. The system can simulate the downhole working state and can be used to observe the running state of the key components directly. It provides a visual method for condition detection and fault diagnosis of water-based rod-less pumping unit.
【學位授予單位】：北京信息科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE933.1
本文編號：2281568
[Abstract]:The water-based rodless pumping unit is a new type of pumping equipment which uses hydraulic power to promote the underground pumping pump work. It has the characteristics of high efficiency and low power consumption, and can completely eliminate the problem of rod and pipe bias wear existing in the traditional pumping unit. Therefore, it has a broad application prospect. The research of state detection and fault diagnosis can ensure the safety and stability of the equipment and improve the production efficiency of the equipment. It has important theoretical significance and engineering application value. The main contents and innovations of this paper are as follows: (1) the dynamics of the power cylinder, the key component of the water-based rodless pumping unit, is studied, and the kinematics equation of the cylinder is derived. The mapping relationship between the variation of kinematics combined parameters of power cylinder and the fault under different faults is established, and the method of judging the fault type by using the variation of combined parameters of power cylinder is put forward. This method can reveal the fault types of the power cylinder of the water-base rodless pumping unit and provide a theoretical basis for its fault diagnosis. (2) the feasibility of the application of HMM in the fault diagnosis of the water-base rodless pumping unit is discussed. The research on fault diagnosis method of water-based rod-less pumping unit based on HMM is carried out, and the flow chart of fault diagnosis is given. In this paper, HMM method is used to diagnose four kinds of faults, such as normal production of water base power rod pumping unit, leakage of power hydraulic pipe, swam plug, counterweight wear, fixed fan clogging, etc. The results show that this method is suitable for fault diagnosis of water-based rodless pumping units, and can achieve high accuracy. (3) A fault diagnosis method for water-based rodless pumping units based on higher-order cumulant spectrum is studied. A method for fault diagnosis of water-based rodless pumping units is proposed, which combines 2.5 dimension spectrum with HMM. The comparison between this method and the single application of HMM in fault diagnosis shows that the fault diagnosis method of hydrodynamic rod less pumping unit based on HMM with 2.5 D spectrum has higher fault diagnosis accuracy. And the speed of model training is also greatly improved. (4) the test bench of water-base rodless pumping unit is constructed, and the circuit control system and man-machine interface of the test bed are designed. The test rig can be used to simulate the normal working state and various fault states of water-based rodless pumping units. A simulation system for condition monitoring and fault diagnosis of water-based rodless pumping unit is developed. The system can simulate the downhole working state and can be used to observe the running state of the key components directly. It provides a visual method for condition detection and fault diagnosis of water-based rod-less pumping unit.
【學位授予單位】：北京信息科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE933.1
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