Wide-range float type flow sensor

Abstract

A new sensor applied for flow measurement field, is wider measurement range, simple structure, and fewer parts. In the sensor's shell, the sensor probe is a Hall sensitive part, installed in the center of the top lid of the flow-guide pipe, corresponding to the magnet body above the floater, and the floater is a round-flake style, the guide rod fixed in the center position of the floater, and through the stand of the floater's flow-guide pipe, the floater maintaining a balance when displaces from top to bottom. The both sides of the top of the flow-guide pipe respectively have a drainage whole, upside and downside respectively having an export and import. When measured fluid flowing, the magnet body linked with the floater produces the corresponding displacement, making the Hall probe export the corresponding changing electric signal. The mini sensor can keep the low cost, while greatly optimize the technical targets of the flow sensor on range, precision, pressure loss, pressure resistance, etc., and achieve and some better than the existing national industry standards. When applied to civilian gas meter, it can achieve the sensing, transmission, intelligent integration of the smart gas meters in the real sense.

Description

Technical field: [0001] The invention relates to a wide range float type flow sensing device capable of detecting gas and liquid flow. Background technique: [0002] At present, the known structure of the float flowmeter is composed of a base, a sign, a casing, a float, a tapered pipe, a support plate, a compression cover, a sealing ring, a bolt, an insert, and assembly. When the measured fluid passes through the annular gap formed by the tapered tube and the float from bottom to top, the upper and lower ends of the float will generate differential pressure to form the thrust of the float rising. As the area increases, the fluid velocity at the annulus drops immediately, the differential pressure at the upper and lower ends of the float decreases, and the upward thrust acting on the float also decreases, until the upward thrust is equal to the weight of the float immersed in the fluid, the float will stabilize at a certain value a height. At the same time, the calibration ...

AI Technical Summary

Problems solved by technology

There is a V-shaped drainage hole on both sides of the top of the duct

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