Detachable shell device of Coriolis force mass flow meter

Abstract

The invention relates to a detachable shell device of a Coriolis force mass flow meter. The detachable shell device is composed of a detachable shell, a supporting pipe, a connecting bolt and a sealing strip, the outer surface of the lower portion of the supporting pipe and the inner surface of the upper portion of the detachable shell are connected in a matched mode through respective connecting sealing faces, and after the sealing strip is arranged at the sealing connecting position to form sealing connection, fixing is realized by using the connecting bolt. According to the detachable shell device, the sealing strips are arranged on the upper and lower slopes for sealing, so that the detachable shell can be repeatedly mounted on the supporting pipe or dismounted from the supporting pipe under the condition that the sealing performance and the waterproof performance of the inner cavity of the Coriolis force mass flow meter are guaranteed; the problems of on-line detection and replacement during calibration of the Coriolis force mass flow meter and on-line detection maintainability under working conditions are solved. Meanwhile, due to the adoption of the sealing strip, the connection between the detachable shell and the supporting pipe is changed into flexible connection, part of outward transmission is eliminated and absorbed, and the accuracy and reliability of the Coriolis force mass flow meter are improved.

Description

technical field [0001] The invention relates to a Coriolis force mass flowmeter, in particular to a detachable shell device of the Coriolis force mass flowmeter. Background technique [0002] At present, the Coriolis force mass flowmeter has become the most precise flow meter in flow measurement. The accuracy of general flow meters: liquid (water or oil) measurement is 1 and 0.5, and gas measurement is 1.0 level and 1.5 level. The Coriolis force mass flowmeter can be accurate to 0.1 and 0.2 for liquid measurement, and 0.2 and 0.3 for gas measurement. And there are no movable or rotating parts in the entire measurement flow pipeline, which can work reliably for a long time and has low requirements for the measured medium, and low requirements for the straight pipe sections before and after the measurement pipeline. Therefore, Coriolis force mass flowmeters are rapidly and massively used in various industries and public utilities. At present, all Coriolis force mass flowmet...

AI Technical Summary

Problems solved by technology

Therefore, if the calibration is unqualified, or if there is a problem in use, generally there will be no problem with the shunt fluid and the flow measuring tube. The problem generally lies in: the drive coil, the detection coil is damaged or the installation position is not suitable, the connection is damaged, and the position of the damping plate Incorrect, the weight of the counterweight is unsuitable or the position is unreasonable

When these problems occur, the Coriolis force mass flowmeter has to be removed from the pipeline and returned to the assembly workshop for shell opening, maintenance, and rebalancing. The workload is heavy, time-consuming and laborious, and the original shell cannot be used. , when recalibrating the reinstalled Coriolis force mass flowmeter, there is still the possibility of unqualified calibration, and the case needs to be opened again

For all flow detection instruments other than Coriolis force mass flow meters, the detection parts, whether movable or fixed, are in contact with the measured fluid, and must be removed from the pipeline during maintenance, and then disassembled for maintenance

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