Air blowing type liquid level meter

Abstract

According to the air blowing type liquid level meter, an outer air blowing pipe can be connected to the top end of a liquid storage tank in a vertically moving and sealing mode, and the air blowing pipe is provided with an opening part arranged at the bottom end; the air supply stop valve is connected with the blowing pipe through a hose; the air supply device is connected with the air supply stop valve so as to controllably supply air to the air blowing pipe; the pressure meter measures pressure data of gas in the gas blowing pipe; the electric control device is connected with the air blowing pipe and the pressure meter and lifts the air blowing pipe based on the pressure data, the processor sends a second signal for measuring the pressure data of the preset height below the liquid level in the liquid storage tank to the driving device, the driving device descends the air blowing pipe to reach the preset height below the liquid level in the liquid storage tank, and the pressure meter measures and records the pressure data; the processor judges the height of the blowpipe based on the pressure value of the pressure gauge. The blowing type liquid level meter can accurately measure the liquid level height with uncertain density.

Description

technical field [0001] The invention relates to the technical field of liquid level height measurement with uncertain density, in particular to an air blowing liquid level gauge. Background technique [0002] In the prior art, liquid level gauges include glass tube type liquid level gauges, float level gauges, and air blowing type liquid level gauges. Among them, the glass tube liquid level gauge cannot meet the requirements of special environments. In a special liquid environment, the float level gauge is prone to adhesion, resulting in inaccurate measurement results. Media restrictions, too many particles, or viscous media or even media that are easy to condense will affect the actual use effect, and the continuity signal is not good enough. [0003] The existing blowing type liquid level gauge cannot realize the measurement of the liquid level height with different density or uncertain density, and the measurement cannot be realized when the gas is insoluble in the liqui...

AI Technical Summary

Problems solved by technology

Among them, the glass tube liquid level gauge cannot meet the requirements of special environments.

In a special liquid environment, the float level gauge is prone to adhesion, resulting in inaccurate measurement results, media restrictions, too many particles, or viscous media or even media that are easy to condense, which will affect the actual use effect, and the continuity signal is not good enough.

[0003] The existing blowing type liquid level gauge cannot realize the measurement of the liquid level height with different density or uncertain density, and the measurement cannot be realized when the gas is insoluble in the liquid. It is necessary to add an anti-blocking needle, and the needle blowing type There is a risk of the level gauge being blocked

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