Pumping unit power hand-held test instrument and application method thereof

Abstract

The invention provides a pumping unit power hand-held test instrument, relating to an intelligent power measurement instrument. One end of a test instrument body is provided with a clamp opening; the joint between the test instrument body and the clamp opening is provided with a trigger; the test instrument body is provided with a display screen, press keys, a USB (Universal Serial Bus) interface and a power input socket; an SD (Secure Digital) data storage card and a circuit system are arranged in the test instrument; and the circuit system is formed in a way that a current induction module is connected with an AD (Analog-to-Digital) acquisition module through a current signal adjustment module, a voltage isolation module is connected with the AD acquisition module through a voltage signal adjustment module, the AD acquisition module is connected with a central processing unit, and a liquid crystal display module, a press key input module and a bulk storage module are all connected with the central processing unit. The instrument provided by the invention can accurately test, display and record electric parameters of the pumping unit, such as voltage, current, system frequency, active power, reactive power, apparent power, power factor, unit time power consumption and the like, and can determine the working condition balance degree of the pumping unit based on a power curve method so as to reflect actual working conditions, thereby visually displaying whether the pumping unit is subjected to negative work, providing a reliable basis for balance degree adjustment of the pumping unit, reducing accidents of the pumping unit, and prolonging the service life. Thus, the invention can ensure the pumping unit to work in balanced conditions and prolong the service life of the pumping unit by more than five years.

Description

technical field [0001] The invention relates to an intelligent power measuring instrument, in particular it is a hand-held tester for pumping unit power. Background technique [0002] At present, the lifting methods of oil field production include pumping unit, screw pump, electric pump, etc. Among them, the beam pumping unit is the main equipment in oil field production, and it is also one of the main sources of electric energy consumption. At the same time, its utilization efficiency is very low. Generally around 30%, or even lower. During the working process of the beam pumping unit, the balance of the pumping unit directly affects its performance. Making the beam pumping unit run in a balanced state can not only prolong the service life of the pumping unit and the motor, but also save a lot of electric energy. [0003] At present, the conventional method for judging the balance degree of pumping units is the current method, that is, the current peak value of the motor ...

AI Technical Summary

Problems solved by technology

[0005] The invention aims to overcome the deficiencies of the prior art, and provides a hand-held pumping unit power tester, which uses the power method to test the balance of the pumping unit, and solves the problem that the current method cannot judge the balance of the pumping unit. It is impossible to judge whether it is the generating current or the input current, which leads to the problem of false balance in the test results, and also improves the test accuracy.

At the same time, the application of Hall sensor technology also solves the problem that the existing pumping unit power monitor cannot accurately measure various electrical parameters under the condition of frequency conversion

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