Liquid level detection device

Abstract

The invention provides a liquid level detection device. The device comprises a liquid tank containing liquid metal, the liquid tank is provided with a probe made of a conductive refractory material, the probe is suspended in the liquid tank in the vertical direction, a terminal A is connected to the upper end of the probe, the liquid tank is further provided with a conductor frequently making contact with the liquid in the liquid tank, the upper portion of the conductor is higher than the liquid level in the liquid tank, a terminal B is connected to the conductor, a control panel is electrically connected to the terminal A and the terminal B, and the liquid tank is further provided with a reference object used for eliminating the temperature error. Accordingly, the liquid level change situation can be continuously detected, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of liquid level detection, in particular to a liquid level detection device. Background technique [0002] The existing two types of metal liquid level detection methods are usually as follows: [0003] 1. One is the detection of a specific liquid level, that is, placing a float switch at a specific liquid level. When the metal liquid level rises, the float switch acts, so that the control system can obtain a signal that the aluminum liquid level reaches a certain height. The detection accuracy of the float switch Relatively low, generally there is an error of a few millimeters; [0004] 2. The other type is continuous liquid level detection, which uses the principle of distance measurement to measure the distance from the aluminum liquid surface to a specific position, thereby calculating the height of the metal liquid level. This type of liquid level detection is relatively accurate, but it can adapt to h...

AI Technical Summary

Problems solved by technology

[0003] 1. One is the detection of a specific liquid level, that is, placing a float switch at a specific liquid level. When the metal liquid level rises, the float switch acts, so that the control system can obtain a signal that the aluminum liquid level reaches a certain height. The detection accuracy of the float switch Relatively low, generally there is an error of a few millimeters;

[0004] 2. The other type is continuous liquid level detection, which uses the principle of distance measurement to measure the distance from the aluminum liquid surface to a specific position, thereby calculating the height of the metal liquid level. This type of liquid level detection is relatively accurate, but it can adapt to high-temperature objects (For example, the temperature of metal aluminum liquid is generally above 700 degrees) The probe required for distance measurement is very expensive

[0005] The function of the second detection method covers the first detection method. In some occasions, the first method is used mainly because the requirements for measurement are not high, or the cost of the second method is too high; Continuous detection of liquid level changes, low-cost liquid level detection device

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