A screw pump well angular velocity measuring device with dual sensing units to eliminate eccentricity error

Abstract

The present invention utilizes the centrifugal force generated when the object rotates around a fixed axis, and the relevant principles and methods of beam bending and strain measurement, and designs a screw pump well angular velocity measurement device with double sensing units that can eliminate eccentric installation errors, including a horseshoe-shaped opening Type metal shell, the first acceleration measuring device and the second acceleration measuring device installed in the horseshoe-shaped open metal shell, as well as signal processing and wireless transmission circuit boards and small-size large-capacity batteries; the open design of the present invention is convenient for construction site installation ; The acceleration sensing device designed by the present invention is simple, low in cost and high in reliability. Using dual sensing units and using the method of measuring the difference between the two acceleration sensing devices to measure the angular velocity can eliminate the influence of the eccentricity error caused by improper installation on the results; the use of wireless transmission devices can realize the real-time continuous measurement of the angular velocity of the screw pump well in the oil field Measurement.

Description

technical field [0001] The invention belongs to the technical field of oilfield mechanical measurement, and in particular relates to an open-type oilfield screw pump well angular velocity real-time measurement device which can eliminate the installation eccentricity error of the measurement device and can eliminate the installation eccentricity of the measurement device. Background technique [0002] In the oil production process of the screw pump, the angular velocity of the screw pump directly affects the efficiency and life of the pump, and is an important parameter to reflect the working state of the screw pump oil well. When an angular velocity measuring device is added to the currently working screw pump, it often does not change the original equipment structure, does not affect the performance of the equipment, and has the requirements of being easy to install, disassemble, easy to maintain, and even maintenance-free. The measurement accuracy of the angular velocity m...

AI Technical Summary

Problems solved by technology

At this time, the distance between the center of the sensor and the center of the screw pump will often change. However, oilfield operators often do not have the sensor installation and debugging technology. Without professional sensor installation and debugging personnel, it is inevitable to introduce eccentricity errors and affect the measurement accuracy.

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