Liquid level monitoring device integrating differential pressure type and sound wave type

Abstract

The invention discloses a liquid level monitoring device integrating a differential pressure type and a sound wave type. The device includes a mounting housing, a sound wave type detecting component,a differential pressure type detecting component and a main control module. The mounting housing is used for being mounted on a wall surface of a to-be-detected facility; the sound wave type detectingcomponent is arranged on the mounting housing and can detect liquid level distance information; the differential pressure type detecting component is arranged on the mounting housing and can extend into water to detect water pressure information; the main control module is arranged in the mounting housing and separately connected with the sound wave type detecting component and the differential pressure type detecting component to receive the liquid level distance information and / or the water pressure information. An ultrasonic sensor and a pressure sensor can automatically switch for work under different environments; the defects are overcome that sound wave type sensors have measurement blind areas, differential pressure type sensors are deeply affected by medium density and temperature, the precision is usually low, installation is pretty complicated, probes are easily blocked, and the maintenance difficulty is high. The liquid level monitoring device is simple in structure, convenient to operate, precise in measurement data, free of blind areas and conducive to maintenance.

Description

technical field [0001] The invention relates to the field of monitoring, in particular to a device applied to water level monitoring of urban pipe network systems. Background technique [0002] As an important part of urban infrastructure, urban drainage system undertakes the important task of treating and removing urban sewage and rainwater, and is an important factor to ensure the sustainable and healthy development of the city. In recent years, every summer, extreme weather occurs in many cities across the country, causing urban waterlogging and other disasters, seriously affecting the daily life of citizens. Not only that, with the development of urbanization and the increase of population in our country, the amount of sewage discharge is also increasing. It is imminent to further improve the urban drainage capacity to deal with extreme weather and urban sewage events. [0003] With the development of material science and communication technology, there are quite a lot ...

AI Technical Summary

Problems solved by technology

[0004] The sonic liquid level gauge belongs to non-contact measurement, which has the characteristics of high precision, simple installation, convenient maintenance and is not affected by factors such as the viscosity and density of the liquid. However, there is a certain blind spot in the measurement. Once the liquid level rises to the ultrasonic sensor The liquid level within the blind zone will not be detected correctly

[0005] Differential pressure level gauge belongs to contact measurement, which has the advantages of reliable operation, stable quality, long life, simple structure, small size and suitable for most occasions with normal temperature and pressure, but because it is greatly affected by medium density and temperature , the accuracy is often relatively poor and there are disadvantages such as complicated installation, easy blockage of the probe, and relatively difficult maintenance.

[0006] The current liquid level monitoring devices use acoustic wave liquid level gauges and differential pressure liquid level gauges alone for detection. Therefore, the existing liquid level monitoring devices have the disadvantages of poor measurement accuracy or measurement blind spots.

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