Multifunctional storage tank liquid level instrument

Abstract

The invention relates to a multifunctional storage tank liquid level instrument which has the function of measuring the liquid level of a storage tank, interfaces among different liquids in a liquid surface and liquid temperature and density. The multifunctional storage tank liquid level instrument is formed by a servo motor, a controller, a signal transmission belt, a measuring box, a steel belt,a guide rope and a sleeve. Since a main measuring part of the liquid level instrument is completely isolated from a measured medium, compared with an existing servo liquid level instrument, the liquid level instrument of the invention has the advantages of higher temperature resistance, higher pressure resistance, higher corrosion resistance and better explosion-proof performance and has no special requirements for a measuring environment and a measured medium. The measurement data is safe and reliable, the measurement precision is high, an application scope is wide, a structure is simple, and the installation is convenient. Meanwhile, a measuring process can be controlled on site, a measured value can be displayed, the remote control of a monitoring room can be received through a controller interface and the measurement data can be output, the liquid level of the storage tank can be displayed on a computer of the monitoring room in real time, and the interfaces between different liquids in the liquid surface and the liquid temperature and density can be displayed at any time.

Description

technical field [0001] The invention relates to the liquid level of a storage tank, the interface between different liquids in the liquid surface and the measurement of the temperature and density of the liquid. Background technique [0002] Today's petrochemical industry oil storage tanks are roughly divided into three types of liquid level gauges used for oil measurement: magnetostrictive liquid level gauges, radar level gauges, and servo liquid level gauges; The change brings a certain measurement error, the measuring range is too high, it is not easy to install, and the float is easy to be stuck by the conduit; the radar level gauge is difficult to measure the oil-water interface, and the failure is difficult to deal with, and the use is limited; the characteristic of the servo level gauge is that it is detected by contact. The float of the measured medium or the sensor installed inside it provides measurement information. Since the state and physical parameters of the m...

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Problems solved by technology

[0002] Today's petrochemical industry oil storage tanks are roughly divided into three types of liquid level gauges used for oil measurement: magnetostrictive liquid level gauges, radar level gauges, and servo liquid level gauges; The change brings a certain measurement error, the measuring range is too high, it is not easy to install, and the float is easy to be stuck by the conduit; the radar level gauge is difficult to measure the oil-water interface, and the failure is difficult to deal with, and the use is limited; the characteristic of the servo level gauge is that it is detected by contact. The float of the measured medium or the sensor installed inside it provides measurement information. Since the state and physical parameters of the measured medium change with time and external conditions, the authenticity of the information obtained by the float or sensor depends on the measurement environment and occasion. And the measured medium has a great influence, which affects the measurement accuracy of the liquid level meter, the scope of application is limited, and the investment cost is also high

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