Electrode type crude oil water content real-time detector

Abstract

The invention discloses an electrode type crude oil water content real-time detector comprising a signal collection part, a signal processing part and a signal transmission part. The signal collectionpart comprises an electrical conductivity signal collection module, a quality signal collection module, a temperature signal collection module and a heating module. The signal processing part comprises a constant current source excitation module, a signal amplification module, an adaptive gear switching module and a true effective value conversion module. in measurement, a constant current sinusoidal excitation signal is applied to one end of the excitation electrode, and connected with the ground via a solution under test to form a loop, so that voltage drop is generated in a receiving electrode; the voltage drop generated by the receiving electrode forms a linear relation with the electrical conductivity of the solution; the electrical conductivities of crude oil at two different temperatures are measured via a temperature sensor and a heating device; and the water content of the crude oil can be computed by using a program formula of a microprocessor in combination with the crude oil fraction vaporization rates corresponding to quality and temperature in two measurements. The computed water content is conveyed to a ground control console via a communication cable, so that the mineralization degree of the crude oil is detected in real time.

Description

technical field [0001] The invention relates to the technical field of sensors and detection, in particular to an electrode-type real-time detector for the water content of crude oil, which is mainly aimed at detecting the water content of crude oil down an oil well. Background technique [0002] At present, the electrode-type crude oil water content real-time detectors that are common in the market all need to calibrate the conductivity value of the pure water phase in the measured sample, but the conductivity value of the pure water phase in the measured sample is often unable to be obtained accurately, which leads to the conductivity method. The accuracy of crude oil moisture content measurement cannot be guaranteed. With the continuous development of crude oil water content measurement technology, more and more scientific and technological workers have begun to study crude oil water content real-time detectors, which put forward higher requirements for the measurement ac...

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to design an electrode-type crude oil moisture content real-time detector, which can solve the problem that the current electrode-type crude oil moisture content real-time detector needs to calibrate the conductivity value of the pure water phase in the sample in advance, resulting in the inaccurate measurement accuracy. Guaranteed question

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