Polished Rod Displacement Sensor and Method of Beam Pumping Unit Based on Acceleration Measurement
A beam pumping unit, acceleration measurement technology, applied in the field of displacement sensors, can solve the problems of fixed sensors, signal transmission line winding, tearing, inconvenient use, etc., to achieve high economic benefits, high measurement accuracy, and convenient use Effect
Active Publication Date: 2019-03-19
陈曦
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Problems solved by technology
This measurement method is simple in principle and high in accuracy. The disadvantage is that the displacement sensor is easily damaged after installation; the signal transmission line is easily entangled and torn due to wind, operation, etc.
The above factors lead to a large workload for on-site maintenance of the pull-wire sensor detection, inconvenient use, and difficulty in achieving long-term online measurement
In addition, since open flames are prohibited at the working site of the pumping unit, it is required that the sensor cannot be fixed by on-site drilling and other methods during the installation process.
Method used
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] like figure 1 As shown, a beam pumping unit polished rod displacement sensor based on acceleration measurement includes a hollow shell 1, a first x-direction accelerometer 2 bonded to the inner bottom surface of the shell 1, and the first x-direction accelerometer 2 The first y-direction accelerometer 3 bonded to the same point on the inner bottom surface of the shell 1, the second x-direction accelerometer 4 bonded to the inner bottom surface of the shell 1, and the second x-direction accelerometer 4 bonded on the same point The second y-direction accelerometer 5 at the same point on the inner bottom surface of the housing 1, and the magnet 6 bonded to the periphery of the housing 1 and the outer surface of the bottom.
[0023] If the lower left corner of the hollow shell 1 is used as the coordinate origin, the x and y coordi...
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The invention discloses a beam-pumping unit polish rod displacement sensor based on acceleration measurement and a method thereof; the sensor comprises a hollow shell, accelerometers respectively bonded at two points on an inner bottom face of the outer shell and of which measurement directions are in parallel to x and y directions respectively, and magnets 6 bonded at four sides of the outer shell and the outer surface of the bottom part; through the magnet, the whole sensor is absorbed and fixed on the beam-pumping unit; the accelerometers are used for measuring the polish rod displacement of the beam-pumping unit. The invention further discloses a displacement measurement method; the sensor is installed at proper position on the beam-pumping unit; through directly measuring the acceleration, the angle displacement of the walking beam rotated around the rotating shaft is calculated; after combining with the structural parameter of the walking beam, the displacement of the pumping unit polish rod can be calculated.
Description
technical field [0001] The invention relates to a displacement sensor, in particular to a beam pumping unit polished rod displacement sensor and method based on acceleration measurement. Background technique [0002] Beam pumping units are widely used in my country's oilfields. The displacement of the polished rod of the pumping unit is an important parameter for analyzing and diagnosing the working state of the pumping well. Measuring the displacement of the polished rod of the pumping unit is an important part of the daily management of the pumping well. At present, the displacement measurement of the polished rod generally adopts the pull-wire sensor, the signal is transmitted by the cable, and the lead wire of the detection sensor moves with the polished rod. This measurement method is simple in principle and high in accuracy. The disadvantage is that the displacement sensor is easily damaged after installation; The above factors lead to a large workload for on-site mai...
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IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 陈曦杨鹏飞党斐闫渊
Owner 陈曦