Liquid level measuring device

Abstract

The invention provides a liquid level measuring device which comprises a container, a flexible hose, a floating body and a pressure sensor. A cover with an air hole is arranged on the top of the container, the container and the floating body are connected through the hose, and the pressure sensor is arranged inside the tail end, connected with the floating body, of the hose. The liquid level measuring device is simple and stable; by changing substances in the floating body, the mean density of the floating body can be adjusted according to actual conditions, and thus the liquid level measuring device is capable of being used for measuring the liquid level of layered liquid of two different densities, good in stability, strong in electromagnetic interference resistance, capable of working in severe environment, resistant to high temperature, large in pressure testing range, and capable of solving the problems that mechanical devices of a traditional measuring method are complex and need to the maintained and calibrated periodically and the like.

Description

technical field [0001] The invention belongs to the field of engineering measurement, and in particular relates to a liquid level measuring device constructed with a pressure sensor. Background technique [0002] In oil and gas production, especially in oil and gas gathering, transportation, storage and transportation systems, since oil and associated sewage have to be separated, stored and treated in various production equipment and tanks, the measurement and control of liquid level is very important for ensuring normal production and Equipment safety is very important, otherwise it is easy to cause pumping or oil spill accidents, which will seriously affect the production and safety of subsequent equipment; in the process of oil and gas storage and transportation, it is necessary to accurately measure the liquid level in the oil storage tank for correct calculation Oil storage, determine inventory, calculate delivery. [0003] Traditional liquid level measurement methods ...

AI Technical Summary

Problems solved by technology

[0003] Traditional liquid level measurement methods include manual detection ruler method, magnetic reversal measurement method, ultrasonic measurement method, constant buoyancy and variable buoyancy measurement method, static pressure measurement method, etc., but these traditional measurement methods use complex measurement mechanisms. Regular maintenance and calibration are required, the measuring mechanism has poor stability, and the ability to resist electromagnetic interference is weak, which cannot meet the requirements of working in harsh environments, and the range of high temperature resistance and pressure testing is limited

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