Capacitance-type delayed oil level signal device

Abstract

The invention discloses a capacitance-type delayed oil level signal device and aims to provide a liquid level signal device which has two functions including liquid level warning and delaying and can avoid false warning caused by liquid level fluctuations through the delaying. The device disclosed by the invention is achieved by the technical scheme that a signal inductor limits a magnetic floater assembly (7) which is a movable component within a limited scope on a guide rod (10) by a protective shell body (11); the protective shell body and a junction box shell body (6) are separated and firmly connected on the tail part of the guide rod; a wire of an electric connection socket (1) stretches into the guide rod and is connected with a reed pipe (8); and the reed pipe is disposed in the guide rod through pipeline irrigation so as to sense magnetic field changes of the magnetic floater assembly. When a liquid level reaches a preset warning liquid level, the magnetic floater assembly (7) can suck the reed pipe (8), the reed pipe outputs a connection signal to a time relay (2) which is electrically connected with the socket, the time relay can provide a preset delay period, and the delay period is used to eliminate the false warning caused by the liquid level fluctuations.

Description

technical field [0001] The invention relates to a magnetic float type liquid level signal device which is mainly used in aircraft fuel and lubricating oil systems and has two functions of liquid level alarm and time delay, and can also be widely used in automobiles, oil refining, chemical industry, paper making, etc. industry. Background technique [0002] The sensing part of the magnetic float type liquid level indicator is a coaxial container, and the detected medium is fuel, lubricating oil, or water, oil, industrial sewage and other liquids. When the liquid level changes, the liquid level annunciator generates a corresponding electrical signal change, thus prompting that the current liquid level has reached the set height. The magnetic float type liquid level signaler uses buoyancy to make the float follow the liquid level change. At the set position, the magnetic field in the float attracts the dry yellow tube, and converts the liquid level prompt signal into a switch ...

AI Technical Summary

Problems solved by technology

The traditional liquid level signal device used for liquid level alarm in the prior art only has the function of liquid level alarm, and its disadvantages are high false alarm rate, reliability, stability, safety, etc.; False alarms caused by fluctuations need to be eliminated by the signal receiving device through logical judgment; the reliability of the liquid level alarm depends on the processing of the signal receiving device

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