Device for online detection of oil product density and viscosity

Abstract

The invention provides a device for online detection of oil product density and viscosity, The device comprises an electrode sealing casing, a piezoelectric plate arranged in the electrode sealing casing, a detection unit and a processing unit, wherein the detection unit and the processing unit are arranged on two opposite end faces outside the electrode sealing casing. The detection unit comprises a piezoelectric vibrator, and the processing unit comprises a processor, a signal stimulation module and a signal collection module. The piezoelectric plate is electrically connected with the processing unit through a first electrode lead, and the electrode sealing casing is provided with a through hole for the first electrode lead to penetrate. The signal stimulation module stimulates the piezoelectric plate to vibrate. The processor calculates the oil product density and viscosity according to vibration frequency and vibration impedance of the piezoelectric vibrator collected by the signal collection module in an oil product. The device detects density and viscosity indexes of the oil product simultaneously, the problems of poor timeliness in off-line measurement and laboratory measurement are solved, and outburst faults can be timely captured to avoid or reduce a loss.

Description

technical field [0001] The invention relates to the technical field of oil product quality detection, in particular to an online detection device for oil product density and viscosity. Background technique [0002] Lubricating oil, hydraulic oil, fuel oil and other oil products are widely used in construction machinery, transportation, metallurgy, manufacturing, petrochemical, electric energy and other industries, and are important commodities related to the national economy and people's livelihood. The density and viscosity characteristics of oil products are physical and chemical indicators that are of great concern in industrial production, so how to detect the density and viscosity of these oil products in real time in process control becomes very important. [0003] At present, the detection of the density and viscosity of lubricating oil mostly needs to be completed by large-scale experimental instruments, such as automatic viscometers, density meters and other measuri...

AI Technical Summary

Problems solved by technology

These instruments are generally expensive, bulky, complex to operate, and require a very stable operating environment, such as laboratory work

However, the flow rate of the oil in the field, the representativeness of the oil sample, and the temperature of the oil are all different from those in the laboratory. There is a big gap between the data measured by these instruments and the oil conditions in the field.

More importantly, the operation method of manual regular oil extraction not only brings experimental errors, but also cannot monitor the operation of oil products in use in real time, and lacks timeliness judgment for emergencies

[0004] In addition, the existing oil quality detection device is difficult to achieve simultaneous measurement of density and viscosity, and lacks some measurement indicators

In theory, installing multiple sensors can achieve simultaneous measurement of density and viscosity, but multiple sensors not only increase production costs, but are also not conducive to system integration

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