On-line soft measurement method and device for hanging point load of beam pumping unit
A beam pumping unit and suspended point load technology, which is applied in measuring devices, earthwork drilling, computer control, etc., can solve the problems of adding sensors, low accuracy of measurement results, inconvenient installation and maintenance, etc. Obvious, strong and weak electrical isolation perfect, high accuracy effect
Active Publication Date: 2022-07-19
XIAN HIRATE NET ELECTRIC EQUIP CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, to provide an online soft measurement method and device for the suspension point load of the beam pumping unit, and to realize the beam beam by monitoring the electrical parameters of the pumping unit drive motor in real time. The online soft measurement of the suspension point load of the beam pumping unit can accurately monitor the suspension point load of the beam pumping unit, and effectively overcome the conventional measurement method’s susceptibility to interference from the working environment, low accuracy of measurement results, additional sensors, and installation Defects such as inconvenient maintenance
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[0055] The present invention will be described in further detail below by taking the beam-balanced beam-type pumping unit as an example, in conjunction with the accompanying drawings.
[0056] The basic content of the on-line soft measurement method for the suspended point load of the beam pumping unit according to the present invention is that the three-phase voltage detection module 1 and the three-phase current detection module 2 of the suspended point load soft measurement device of the beam pumping unit are respectively used. Collect the real-time three-phase instantaneous input voltage u of the drive motor in the beam pumping unit system a (t), u b (t), u c (t) and three-phase instantaneous input current i a (t), i b (t), i c (t), after the analog signal conditioning circuit module 5 is amplified, limited, filtered, and I / V transformed, according to the instantaneous reactive power theoretical formula or the instantaneous power definition formula, the DSP of the floa...
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The invention relates to an on-line soft measurement method and device for suspended point load of a beam pumping unit. The measurement method is to use a measurement and control device to collect the input active power of the pumping unit system, and to establish a mathematical model between the input electrical parameters of the driving motor, the fixed parameters of the four-bar linkage of the pumping unit and the hanging point load of the donkey head of the pumping unit. According to this, the soft measurement of the suspended point load of the beam pumping unit is realized. The measurement and control device consists of three major work units: the electric parameter acquisition unit of the beam pumping unit drive motor, the electric parameter processing unit of the beam pumping unit drive motor, and the output execution unit. The invention can accurately monitor the hanging point load of the beam pumping unit, and effectively overcome the defects of the conventional measurement method, such as being easily disturbed by the working environment, low in the accuracy of measurement results, additional sensors, and inconvenient for installation and maintenance.
Description
technical field [0001] The invention belongs to the technical field of oil field oil production process state monitoring and mechanical production efficiency improvement control, and relates to an on-line soft measurement method and device for hanging point load of a beam pumping unit. Background technique [0002] On-line accurate measurement of suspended point load of beam pumping unit is an important measure to ensure the effectiveness of well pump dynamometer diagram drawing and working condition analysis, as well as the efficiency improvement of the machine production system and the effectiveness of fault diagnosis. [0003] At present, the measurement method known in the art is the load sensor method. This method has the defects of increasing material and construction costs, increasing the operation and maintenance workload, etc. due to the need to install additional load sensors on the pumping unit frame or polished rod. The sensor itself is limited by factors such as...
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Patent Timeline
Login to View More IPC IPC(8): G05B19/042G01D21/02E21B44/00
CPCG05B19/0428G01D21/02E21B44/00G05B2219/2612
Inventor 赵怀军胡定兴吕晓鹏梁旭涛贺可可朱军鹏
Owner XIAN HIRATE NET ELECTRIC EQUIP CO LTD