Non-contact liquid level detecting device suitable for complex working conditions

Abstract

The invention relates to a non-contact liquid level detecting device suitable for complex working conditions, and belongs to the technical field of liquid level measurement. The device is structurally characterized in that one end of a waveguide isolating tube is connected with a liquid level meter, the other end of the waveguide isolating tube is closed and connected with a limit plug, the liquid level meter is provided with a liquid level meter protecting cap which is fixed on a first flange, the top of a tank body is provided with a tank opening, the tank opening is provided with a second flange, a reinforcing rod is arranged between the first flange and the second flange, and the wall of the waveguide isolating tube is provided with a liquid-level mechanical coupling device. The device has the advantages that an ultrasonic liquid level meter body is fully isolated with a measuring medium; factors such as smoke, dust, vapor, bubbles and the like do not influence the measurement; and the device is flexible to mount, is not limited by various conditions on site, is applicable to measuring the liquid level of various normal-pressure and high-pressure tank bodies, has strong anti-jamming capability, can be wirelessly deployed with a network, and is convenient for remote detection and management.

Description

technical field [0001] The invention belongs to the technical field of liquid level measurement, in particular to a non-contact liquid level detection device suitable for complex working conditions. Background technique [0002] At present, liquid level measurement under complex working conditions has always been a difficult problem in the field of thermal detection. Changes in the measurement site such as smoke, dust, steam, air bubbles, and external natural conditions have a great impact on measurement accuracy. Measuring medium pressure and viscosity and Acid, alkalinity and their changes also limit the normal use of some liquid level gauges. Commonly used liquid level detection devices include acoustic wave liquid medium type, magnetostrictive type, etc. Acoustic liquid-medium type requires frequent calibration, and is not suitable for high-viscosity media. The cost of magnetostrictive measuring devices remains high, and the requirements for on-site installation are high...

AI Technical Summary

Problems solved by technology

Acoustic liquid-medium type requires frequent calibration, and is not suitable for high-viscosity media. The cost of magnetostrictive measuring devices remains high, and the requirements for on-site installation are high. Under actual complex liquid phase conditions, conventional liquid level measuring instruments There is often the phenomenon that the working conditions interfere with the measurement. The working conditions of the liquid medium not only restrict the way of liquid level measurement to a large extent, but also have an extremely adverse effect on ensuring the accuracy of the measurement. In many working conditions, in order to obtain Reliable liquid level data, a large amount of liquid level verification work is still done manually, which is labor-intensive, but for high-pressure, corrosive, high-viscosity liquid media accompanied by smoke and dust, long-term and effective automation Liquid level measurement is inherently difficult and expensive to operate

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