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Detection equipment of Coriolis mass flow meter

A mass flowmeter and detection device technology, which is applied to mass flow measurement devices, direct mass flowmeters, etc., can solve the problems of limited sensitivity improvement, lack of elastic support mechanism, detection tube leakage, etc., to reduce requirements and improve measurement sensitivity , The effect of production cost reduction

Inactive Publication Date: 2004-11-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Although the sensitivity of this design is improved compared with that of the original fully rigid tube, it still has shortcomings: the corrugated tube has no protective shell, so its pressure resistance is limited, and it is also vulnerable to damage, resulting in leakage accidents of the detection tube; The improvement of sensitivity is limited; the detection tube structure lacks an elastic support mechanism, and it is difficult to change and adjust its dynamic characteristics

Method used

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  • Detection equipment of Coriolis mass flow meter
  • Detection equipment of Coriolis mass flow meter
  • Detection equipment of Coriolis mass flow meter

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Embodiment Construction

[0028] Combine now figure 1 , figure 2 An embodiment of the present invention is described by taking a double U-shaped tube type detection tube as an example. figure 1 01 is the arc section of the rigid detection tube, 04, 11 is the straight tube section of the rigid detection tube, figure 2 Middle 18 is a side pipe section of the lower U-shaped pipe, and the symmetrical side of the upper U-shaped pipe cannot be drawn. The rigid detection pipe composed of 01, 04, 11 is connected with the process pipe 06, 09 through the metal hose 05, 10, and the metal hose 05, 10 also becomes an effective part of the detection pipe, and the process pipe is installed on the on the base. 03 and 12 are elastic supporting devices designed in conjunction with the flexible deformation of hoses 05 and 10. 14 is an electromagnetic vibrator that drives the vibration of the detection tube, and 02 and 13 are vibration motion sensors to obtain vibration signals. figure 2 Among them, the straight p...

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Abstract

The invention is a detecting device of Coriolis mass flowmeter, belonging to flux and mass flow measuring device and used in enhancing measuring sensitivity and reducing the consistent requirement for detecting tube. There is electromagnetic excited vibrator in the middle of the detecting tube and there is vibration sensor on the symmetrical side of the detecting tube, the straight tube segment or part connected with the process pipeline of the detecting tube is composed of ripple metallic hose and there are elastic supporting devices on two symmetrical sides of the detecting tube. It enhances measuring sensitivity by a large margin, largely reduces the consistent requirement for the detecting tube, reduces fabrication difficulty and production cost, enhances repairability and reduces power consumption of system.

Description

technical field [0001] The invention belongs to a measuring device for flow and mass flow. Background technique [0002] The existing Coriolis (Coriolis) mass flowmeter has a section of single-tube or parallel double-tube detection tube. The middle part of the detection tube is equipped with an electromagnetic exciter, and the symmetrical side of the detection tube is equipped with a vibration sensor. When working, The detection tube vibrates in a certain mode. When the fluid flows through the detection tube, there will be a slight difference in the time phase of the vibration motion on both sides of the detection tube. The size of this phase time difference is proportional to the mass flow in the detection tube. The size of this time phase difference realizes the direct measurement of mass flow. The detection tube is U-shaped, Ω-shaped, straight, circular, etc. [0003] In the prior art, the detection tube is a rigid tube and the connection with the process pipeline is al...

Claims

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Application Information

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IPC IPC(8): G01F1/84
Inventor 叶林张杰
Owner HUAZHONG UNIV OF SCI & TECH
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