Liquid level measuring device

Abstract

The invention discloses a liquid level measuring device. The device comprises a floating device, a detecting part and a mounting structure, wherein the mounting structure is arranged on a to-be-testedfacility, the floating device floats on a liquid surface, the detecting part is arranged on the mounting structure and used for detecting the height of the floating device to obtain liquid level information. The liquid level measuring device has the advantages that the method of arranging the detecting part above the liquid surface is less affected by a liquid surface active state, boiling of theliquid surface does not affect the vertical movement of the floating device 1, and the sensitivity of the device is also not reduced due to the fact that the device is affected by water vapor and scale, so that the liquid level measurement is not affected too excessively, and the data error measured by the device is also relatively smaller.

Description

technical field [0001] The invention relates to the field of measurement, in particular to a liquid level measuring device. Background technique [0002] There are many liquid level measuring instruments with floats on the market. There is a float level switch controller whose basic components are composed of floats, cables, ropes, weights, etc. The reed switch signaling group is all hidden in a sealed Inside the float. The dry reed switch is placed at the root of the floating ball, the magnetic ring and the movable hammer are integrated, and can slide freely when set on the slide tube. When the top of the float is down, the moving hammer slides to the top of the float, and the reed switch is away from the magnetic ring, and the reed switch is open; when the root of the float is down, the moving hammer slides to the root of the float, and the reed switch is close to The magnetic ring and the dry reed switch are closed. This kind of float level switch uses a micro switch o...

AI Technical Summary

Problems solved by technology

However, due to the liquid level measuring instrument whose switch is controlled by the change of the angle, the activity state of the liquid surface is relatively large. If the liquid surface is in a state of boiling, the activity range of the float will be relatively large, so the reed switch in the float will The interference received by the sending group will be relatively large, so the error will be relatively large

Ordinary float switches have been soaked in boiling water for a long time. After a long time, a large amount of scale will be attached, which will cause the weight block and the wire to stick together.

Moreover, if it is boiled in boiling water for a long time, the sealing ring may be aged and damaged, resulting in water ingress.

However, the electrode type liquid level probe will also reduce the sensitivity due to the adhesion of scale and the large amount of steam generated by boiling water, resulting in misjudgment.

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