Method for indirectly measuring liquid level and volume of liquid in storage tank and gravitational method based level instrument

Abstract

The invention discloses a method for indirectly measuring liquid level and volume of liquid in a storage tank and a gravitational method based level instrument. The gravitational method based level instrument comprises a storage tank, a gravity sensor, a signal amplifier, an A/D (Analog to Digital) converting module, a microprocessor and a display module, wherein the tank end at one side of the storage tank is fixedly connected to a fixed base of the storage tank, and a supporting point is formed at the bottom of the tank end at one side of the storage tank; the tank end at the other side of the storage tank is fixedly connected to the fixed base of the storage tank, and measuring points in contact with the gravity sensor below the measuring points is arranged at the bottom of the tank end at the other side of the storage tank; the gravity sensor is arranged on the fixed base of the storage tank; the gravity sensor is connected with the signal amplifier, the signal amplifier is connected with the A/D converting module, the A/D converting module is connected with the microprocessor, and the microprocessor is connected with the display module. During the operation of the level instrument, the internal structure of the storage tank does not need to be transformed; the level instrument is convenient to mount and maintain; the level instrument can calibrated by users; the original performance of the storage tank can be ensured; and the level instrument can be widely applied.

Description

Technical field [0001] The invention relates to a method for measuring the level and volume of a liquid stored in a container (in a storage tank), and a level meter using the method. Background technique [0002] With the development of science and technology and the improvement of industrial automation, people have higher and higher requirements for liquid level (liquid level, volume) measurement, and the application range is wider and wider. Although there are many measurement devices on the market that are used to measure liquid level, that is, level meters, when they measure liquids, they all need to modify the internal structure of the original container for installation. This not only wastes a lot of manpower, material and financial resources, but also the original technical performance of the transformed container will change, especially the container containing dangerous chemicals or flammable and explosive materials, or high-pressure containers, as well as ultra-high tem...

AI Technical Summary

Problems solved by technology

The above-mentioned gas storage tank currently does not have a feasible and effective method and a level instrument that can measure the liquid level and volume of LNG in the tank in real time. Usually, the tank is estimated based on the approximate consumption of the vehicle mileage after filling up the LNG. The remaining amount of liquefied weather inside is very inaccurate, which brings great inconvenience to users

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