SU428222A1 - DEVICE FOR MEASURING A LEVEL OF LIQUID - Google Patents

Description

one

The known devices for measuring the level of a liquid are not sufficiently sensitive and accurate.

To improve the sensitivity and accuracy of the level measurement, a receiving tank with a level control and a diaphragm was introduced into the proposed device, and a remote chamber with an upper end connected through a diaphragm to the bottom of the tank, and a lower end through a diaphragm of a smaller section to the receiving tank connected through a pump and a pipe line with a reservoir, wherein the cavities above the liquid in the tank, the bypass chamber and the receiving tank are interconnected with equalizing pipes.

The drawing shows the principle of the proposed device, consisting of tank 1, subdivision 2, remote chamber 3, diaphragm 4, receiving tank 5, pump 6, level regulator 7, equalizing pipes S and 5 and level meter 10.

The device works as follows. The liquid from the tank 1 through the upper diaphragm 2 freely flows into the remote chamber 5. From the remote chamber 3, the liquid through the diaphragm 4 freely flows into the receiving tank 5 and then when pump 6 is pumped again into the tank /. B-tank 5 is maintained at a constant level of fluid by level control 7.

Equalizing pipes 5 and 9 are designed to provide the same pressure in the tank /, the remote chamber 3 and the receiving tank 5.

Any level gauge 10 can be used to measure the fluid level (a water meter tube is shown in the drawing).

Since the device uses free flow liquid, it is possible to obtain an increase in the sensitivity of the level gauge in / C times with a cross-sectional area of the lower diaphragm, a smaller cross-sectional area.

j2

%

si

where S is the cross-sectional area of the upper diaphragm,

52 is the cross-sectional area of the lower diaphragm.

By selecting the diaphragm cross-sectional areas, the desired value of the gain / C coefficient can be obtained.

Subject invention

A device for measuring the level of a liquid, containing an external chamber, a level meter and equalizing pipes, is characterized in that, in order to increase the sensitivity and accuracy of the level measurement, a capacitance with a level regulator and aperture is introduced into it, and the external chamber is connected to the upper end through the diaphragm with the bottom of the tank, and the bottom through the diaphragm of a smaller section with the receiving tank connected via a pump and pipeline to the tank, moreover, the liquid above the liquid in the tank, the remote chamber and the receiving tank and interconnected equalizing tubes.

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