Coriolis mass flowmeter and sensor assembly thereof

Abstract

The invention discloses a Coriolis mass flowmeter and a sensor assembly thereof. The sensor assembly comprises a fluid flow pipe, a vibration isolation structure and a weight addition structure; the fluid flow pipe is provided with a fluid input pipeline, a fluid output pipeline and a double loop pipeline connected between the input pipeline and the output pipeline in series; the vibration isolation structure is arranged on the double loop pipeline to divide the double loop pipeline into a vibration pipeline and a non-vibration pipeline; the weight addition structure is arranged on the non-vibration pipeline, and the weight addition structure and the non-vibration pipeline are not in contact with a shell. According to the Coriolis mass flowmeter and the sensor assembly thereof, the gravitycenter of the sensor assembly is adjusted by arranging the weight addition structure on the non-vibration pipeline, so that the vibration state is improved, and the vibration coupling between the non-vibration pipeline and the vibration pipeline is reduced. Moreover, the weight addition structure and the non-vibration pipeline are not in contact with the flowmeter shell, so that a non-vibration part of the sensor assembly is not rigidly connected with the flowmeter shell, the vibration isolation effect is improved, and the flowmeter obtains a stable zero point and achieves excellent meteringperformance conveniently.

Description

technical field [0001] The invention relates to a Coriolis mass flowmeter, in particular to a sensor assembly with a fluid flow tube of a series double loop pipeline and a Coriolis mass flowmeter with the sensor assembly. Background technique [0002] A Coriolis mass flow meter is an instrument that directly and precisely measures fluid flow. The main body of a typical Coriolis mass flowmeter structure uses two U-shaped tubes side by side, allowing the two tubes to vibrate at the same frequency and anti-phase at their resonant frequency, that is, they will move closer or open at the same time. If a fluid is introduced into the tube to flow forward along the tube while the vibrating tube vibrates synchronously, the vibrating tube will force the fluid to vibrate with it. In order to resist this forced vibration, the fluid will give the vibrating tube a reaction force perpendicular to its flow direction. Under this effect called the Coriolis effect, the vibrating tube will pro...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a Coriolis mass flowmeter and its sensor assembly to solve the problem of the limited vibration separation between the vibrating part and the non-vibrating part of the Coriolis flowmeter sensor assembly in the prior art, which makes it difficult to obtain stable Defects in zero point and metering performance

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