An Explicit Analysis Method for Walking-Beam Oil Pumping Unit

2010 ◽  
Vol 26-28 ◽  
pp. 1008-1012
Author(s):  
Xian Yue Gang ◽  
Cui Hua He ◽  
Shu Feng Wang ◽  
Yue Han
Keyword(s):  
Traditional Method ◽  
Trigonometric Functions ◽  
Analysis Method ◽  
Suspension Point ◽  
Power Conservation ◽  
Quadratic Equations ◽  
Complex Calculation ◽  
Explicit Analysis ◽  
Pumping Unit ◽  
Pumping Units

Based on the theory of linear transformation and vector operations, an explicit analysis method is proposed for walking-beam oil pumping unit, which overcomes the difficulties of traditional method: roots discriminating of quadratic equations method and angle quadrant discriminating trigonometric functions method. The kinematics and torque factor of suspension point, and the crank torque of the three kinds of walking-beam pumping units are calculated in a new way according to the rule of power conservation, which avoids the complex calculation of the force bore by each rod. The validity of this proposed method is illustrated with a numerical example.

An Explicit Analysis Method for Lifting Mechanisms

2010 ◽  
Vol 26-28 ◽  
pp. 1000-1003
Author(s):  
Xian Yue Gang ◽  
Fan Zhang ◽  
Yue Han
Keyword(s):  
Linear System ◽  
Traditional Method ◽  
Engineering Problem ◽  
Dump Truck ◽  
Trigonometric Functions ◽  
Analysis Method ◽  
Quadratic Equations ◽  
Explicit Analysis ◽  
Linear Transform ◽  
Four Bar Linkage

The forward push lifting mechanism of a dump truck is simplified to a combination of a four-bar linkage and a triangular arm. Based on quasi-static assumption, using linear transform and vector operations, an explicit analysis method is proposed to calculate joints’ dynamic position of the link lifting mechanism, which overcomes the difficulties of traditional method: roots discriminating of quadratic equations method and angle quadrant discriminating trigonometric functions method. And the pushing force of the stroke is solved from a linear system of only two equations. The validity of this proposed method is illustrated with a real engineering problem.

scholarly journals Improving the Efficiency of Gas Pumping Units: Problems and Solutions

2019 ◽  
pp. 104-118
Author(s):  
E.M. Komarov ◽  
Zh.M. Kokueva
Keyword(s):  
Gas Turbine ◽  
Problems And Solutions ◽  
Pumping Unit ◽  
Gas Pumping ◽  
Gas Pumping Unit ◽  
Pumping Units ◽  
Turbine Drive

The paper describes the process of initiating a project to improve the efficiency of gas turbine plants for driving centrifugal superchargers at compressor stations. The study shows the main trends of increasing the efficiency of gas turbine drives of gas pumping units, gives the constructive-functional appearance of the modern gas turbine drive of the gas pumping unit, and proposes a method for increasing its efficiency.

scholarly journals The change in the efficiency factor of the pumping unit with a frequency converter

2019 ◽  
Vol 97 ◽  
pp. 05010 ◽  
Author(s):  
Eduard Kan ◽  
Nazir Ikramov ◽  
Muradulla Mukhammadiev
Keyword(s):  
Economic Efficiency ◽  
Water Pressure ◽  
Frequency Converter ◽  
Pump Efficiency ◽  
Test Bed ◽  
Speed Up ◽  
Pump Shaft ◽  
Pumping Unit ◽  
Parameter Measuring ◽  
Pumping Units

This paper gives the results of the investigation of the operation of a pumping unit equipped with a frequency converter. As a rule, it is widely assumed that when changing the speed up to 50 %, the pump efficiency almost does not change, and the possibility of decrease of its efficiency is not taken into consideration when calculating the economic efficiency of the operation of the pumping unit equipped with a frequency converter. However, failure to take account the efficiency decrease may cause inaccurate assessment of the economic efficiency of the use of the frequency converter and, consequently, improper selection of the method of control of the operation of the pumping units. This is particularly important for irrigation pumping plants the operation of which is characterized by large volume of the pumpable volume and less severe requirements for provision of the water pressure required for the consumer. The purpose of this paper is to carry out experiments on a test-bed equipped with a pumping unit, parameter measuring instrument, and a frequency converter, and detection of the pattern of efficiency variation with speed. The paper presents the results of the carried out experiments, the obtained characteristic curves of the variation of different types of the efficiency at variation of the pump shaft speed, as well as their analysis.

Evaluating the Risk of Failure on Injection Pump Using Fuzzy FMEA Method

2014 ◽  
Vol 657 ◽  
pp. 976-980 ◽  
Author(s):  
Nicoleta Rachieru ◽  
Nadia Belu ◽  
Daniel Constantin Anghel
Keyword(s):  
Failure Mode ◽  
Traditional Method ◽  
Assessment Model ◽  
Risk Level ◽  
Analysis Method ◽  
Effect Analysis ◽  
Pump Design ◽  
Injection Pump ◽  
Fuzzy Fmea ◽  
Fmea Method

This research is aimed at utilizing failure mode and effect analysis (FMEA) which is a reliability analysis method applicable to rotary injection pump design. In traditional FMEA, Risk Priority Number (RPN) ranking system is used to evaluate, the risk level of failures to rank failures and to prioritize actions. RPN is obtained by multiplying the scores of three risk factors like the Severity (S), Occurrence (O) and Detection (D) of each failure mode. RPN method can not emphasise the nature of the problem, which is multi-attributable and has a group of experts' opinions. Furthermore, attributes are subjective and have different importance levels. In this paper, a framework is proposed to overcome the shortcomings of the traditional method through the fuzzy set theory. Two case studies have been shown to demonstrate the methodology thus developed. It is illustrated a parallel between the results obtained by the traditional method and fuzzy logic for determining the RPNs. We expect that fuzzy FMEA model will assist FMEA team in assess and rank risks more precisely compared with risk assessment model of method.

The Application Research of Virtual Prototyping Technology in the Design of Oil Field Pumping Units

2008 ◽  
Vol 392-394 ◽  
pp. 464-470
Author(s):  
Wen Lei Sun ◽  
X. Wang ◽  
J.Z. Hai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Virtual Prototyping ◽  
Oil Field ◽  
Dynamics Analysis ◽  
Analysis Software ◽  
Element Analysis ◽  
Virtual Prototyping Technology ◽  
Pumping Unit ◽  
Pumping Units

Regulating diameter-variable moment pumping unit as the research object. which been analysed by virtual prototyping technology, by this way, the application ways and realization means of virtual prototyping technology is explored in this field.The virtual prototyping technology is introduced into the dynamic characteristics analysis and optimization for pumping units, and the 3D CAD software, multibody system dynamics analysis software and finite element analysis software were combined. The digital physical prototype for pumping units is established by UG software; ADAMS was Used to establish the function virtual prototype and virtual test system, to develop the test analysis and optimize its structure parameters according to the movement requirements for pumping units; The finite element analysis of the pumping unit parts is processed in the ANSYS environment, and structural design is optimized in accordance with the stress distribution characteristics of pumping components. In this paper, CAD and CAE technology are used with close combination, the pumping units dynamics analysis and simulation is developed from the systemic perspective. The research has the characteristics of high precision analysis, wide range of applications and good practical value.

Design and analysis for a new energy-saving hydraulic pumping unit

2017 ◽  
Vol 232 (12) ◽  
pp. 2119-2131 ◽  
Author(s):  
Zhenhe Li ◽  
Jinchun Song ◽  
Yanjun Huang ◽  
Yungong Li ◽  
Jianwen Chen
Keyword(s):  
Energy Saving ◽  
Structural Design ◽  
System Parameters ◽  
Load Sensing ◽  
Operating Rate ◽  
New Energy ◽  
Pumping Unit ◽  
Pumping Units ◽  
Double Wells ◽  
Working Efficiency

With the increasing concern over global energy crisis, energy saving in pumping units is becoming a significant subject. In terms of energy-saving and working efficiency, hydraulic pumping units outperform conventional pumping units. In this paper, a novel hydraulic pumping unit is proposed to overcome the existing drawbacks of conventional pumping units and present hydraulic pumping units. Firstly, this novel hydraulic pumping unit adopts a balanced mechanical structure, which means two oil wells are used in this system and the weight of their sucker rods can balance each other through the symmetrical arrangement. This kind of structural design not only saves the nominal power but also allows the system to continuously pump oil. Another feature of this hydraulic pumping unit is that it adopts the electro-hydraulic proportional load-sensing control technology, which makes the pressure and flow rate of the pump adapt to the requirement automatically in real time. The double wells of the system work alternatively under the normal condition and any one can work alone when the other needs maintenance, which improves the operating rate of pumping oil. After the main system parameters are calculated, conclusion can be drawn that both the nominal and operating power of this hydraulic pumping unit are relatively low. The model of the whole system is built based on mathematical dynamics and AMESim environment, and simulation results demonstrate that the proposed hydraulic pumping unit can achieve remarkable energy-saving performance.

scholarly journals Research Concerning the Influence of Balancing the Conventional Pumping Units on their Dynamics

2021 ◽  
Vol 72 (2) ◽  
pp. 178-185
Author(s):  
Dorin Badoiu
Keyword(s):  
Computer Program ◽  
Motor Torque ◽  
Pumping Unit ◽  
Pumping Units

The paper analyses the influence of the rotary balancing and of the combined balancing (rotary and oscillating) on the variation of the motor torque at the crankshaft and on the variation of the connection forces acting in the joints of the mechanism of the conventional pumping units. For this purpose a computer program has been developed and a series of results in the case of a C-640D-305-120 pumping unit are presented.

scholarly journals RESEARCH RESULTS OF THE IMPROVED HYDRAULIC JET PUMPING UNIT

2020 ◽  
Vol 6 (444) ◽  
pp. 14-22
Author(s):  
Sh. A. Abdreshov ◽  
◽  
A. E. Aldiyarova ◽  
E. T. Kaypbaev ◽  
◽  
...  
Keyword(s):  
Experimental Model ◽  
Laboratory Tests ◽  
Experimental Studies ◽  
Jet Pump ◽  
Ejection Coefficient ◽  
Jet Pumps ◽  
Useful Flow ◽  
Pumping Unit ◽  
Pumping Units

The scientific article is aimed at substantiating the classification of hydraulic jet pumping units, developing an experimental model of an improved hydraulic jet pumping unit, conducting experimental studies - determining the useful flow Qгн depending on the flow rate of the centrifugal pump used Qн for two variants of the pumping unit operating according to the traditional and alternative technology of water lifting, determination of the head losses hснi and friction coefficients ξснi in jet pumps, increasing the ejection coefficient Ke from the swirl parameter S of water supply to the intake chamber of the jet pump and laboratory tests of the hydraulic jet pumping unit for agricultural water supply and irrigation of pastures. The results of experimental studies and laboratory tests of an experimental model of an improved water-jet pumping unit, developed at NAO KazNAU, are presented. An analysis is given of the results of comparative tests of a hydraulic jet pumping unit for two variants of the technological process: an alternative and a traditional one with an increase in the effective supply of an alternative option by 2-4 times, a decrease in the required pressure by 1.5-2 times and an increase in efficiency by 1.1-2 times. The aim of the study is to obtain results to substantiate the classification of hydraulic jet pumping units, to carry out experimental studies and laboratory tests of an improved hydraulic jet pumping unit operating according to an alternative water lifting technology, which allows to reduce the required head of the pumping unit, increase the useful flow and increase the efficiency of the improved hydraulic jet pumping unit. The work used patent research with a review of works that were carried out according to existing methods: identifying close analogues, analyzing existing works and using them in development. Experimental studies were carried out to study the technological process of water rise from wells, the processes occurring in the used jet pumps - determining the useful flow depending on the flow of a centrifugal pump, determining the pressure losses and friction coefficients in jet pumps, the ejection coefficient and checking the reliability of the theoretical assumptions obtained. Based on the analysis of the work performed and patent research on technologies for lifting water from underground water sources by hydraulic jet pumping units and designs developed for them, a substantiated classification of hydraulic jet pumping units is proposed, which allows, depending on the task at hand, to correctly choose the necessary structural and technological scheme, type of jet pump and its implementation in the development of the required effective standard sizes of the hydraulic jet pumping unit. The scheme of the test bench and the experimental model of the improved hydraulic jet pumping unit with measuring equipment and instruments for conducting experimental research and laboratory tests on a bench well is presented.

scholarly journals ANALYSIS OF MATHEMATICS PROBLEMS IN THE 2013 CURRICULUM AND CAMBRIDGE CURRICULUM MATHEMATICS TEXTBOOKS

2021 ◽  
Vol 6 (1) ◽  
pp. 99-110
Author(s):  
Ratu Sarah Fauziah Iskandar ◽  
Aji Raditya ◽  
Trisna Roy Pradipta
Keyword(s):  
School Quality ◽  
Quadratic Equation ◽  
Mathematics Textbooks ◽  
Analysis Method ◽  
Mathematics Textbook ◽  
Quadratic Equations ◽  
Mathematics Problems ◽  
Data Collection Technique ◽  
Dimensional Analysis Method

Several factors influence the success of learning; one of them is the quality of textbooks. Textbooks have a pivotal role in learning, namely, representing the teacher's explanation in front of the class. Curricula have continuously changed because they are far from the expectations. In Indonesia, many schools have implemented an international curriculum to improve school quality. One of the curricula used is the Cambridge curriculum. This study analyzed the types of problems in the Cambridge and 2013 curriculum mathematics textbooks, especially on quadratic equations. This research utilized a six-dimensional analysis method which consists of mathematical activities, complexity level, answer form, contextual features, response types, and mathematical features. Furthermore, the data collection technique was carried out by analyzing and describing the types of questions in the 2013 curriculum and the Cambridge curriculum mathematics textbooks. The analysis focused on the quadratic equation topic in the 2013 curriculum and the Cambridge curriculum mathematics textbooks. The results shows that there is no difference between the types of problems in the 2013 curriculum and the Cambridge curriculum mathematics textbooks for quadratic equation topics. The framework of this study could be a reference for further research and used by mathematics textbook writers to create more diverse types of questions.              

scholarly journals Wear issues of pumping units

2021 ◽  
Vol 264 ◽  
pp. 04081
Author(s):  
Oybek Ishnazarov ◽  
Abdusaid Isakov ◽  
Utkir Islomov ◽  
Umirzoq Xoliyorov ◽  
Dilshod Ochilov
Keyword(s):  
Mathematical Model ◽  
Wear Resistance ◽  
Service Life ◽  
Rotation Speed ◽  
Operating Mode ◽  
Factors Influencing ◽  
Pump Shaft ◽  
Pumping Unit ◽  
Pumping Units ◽  
The Mathematical Model

The article presents the possibility of increasing the service life of pumping units. Particular attention is paid to the regulation of the speed of rotation of the pumping unit. There are some assumptions in the mathematical model that do not affect the final result. The factors influencing the operating mode are given. It is indicated that the speed of rotation of the pump shaft significantly affects the wear resistance of the pump blades. Thus, the regulation of the pump rotation speed will rationally increase its service life.

Sign in / Sign up

Export Citation Format

Share Document