Tube bundle Coriolis mass flow meter

Abstract

The invention relates to a tube bundle Coriolis mass flow meter suitable for measuring a large-diameter flow tube. The tube bundle Coriolis mass flow meter is characterized in that: both inlet end and outlet ends of a supporting tube are provided with flow splitting plates; a straight-tube type tube bundle measuring tube or a straight-tube abdomen type tube bundle measuring tube are connected in two flow splitting plates; the straight-tube type tube bundle measuring tube and straight-tube abdomen type tube bundle measuring tube are connected with more than two measuring tubes on two flow splitting plates in an arrangement manner; the mass flow rate of the fluid is measured by one or more pairs of measuring tubes; an electromagnetic actuator is arranged in the middle of each pair of measuring tubes; and signal sensors are arranged on both sides of the electromagnetic actuator. The tube bundle Coriolis mass flow meter has reasonable design, and a compact structure, not only can stabilize the effect of flow field through the tube bundle but also can ensure that the flow rate of the fluid medium flowing through each measuring tube is equal, is suitable for measuring the flow of the large-diameter flow tube and the small-diameter flow tube, and has the characteristics of convenience for installation and maintenance, low investment cost and convenience of use and the like.

Description

technical field [0001] The invention belongs to a flow measuring instrument for medium flow in a closed pipeline, in particular to a tube-bundle Coriolis mass flowmeter suitable for measuring large-diameter flow tubes. Background technique [0002] At present, in order to measure the mass flow rate of media in closed pipes, straight tube Coriolis mass flowmeters or "U" tube Coriolis mass flowmeters are usually used, where the "U" tube Coriolis mass flow rate Its structure includes: installing a "U"-shaped measuring tube on the top of the flow tube of the fluid to be measured, so that one end of the "U"-shaped measuring tube is connected to the inlet direction of the flow tube, and the "U"-shaped measuring tube The other end is connected to the outlet direction of the flow tube, and an electromagnetic driver composed of a coil and a magnet is installed at the center of the top of the "U"-shaped measuring tube. Set up a signal sensor composed of a coil and a magnet. The two ...

AI Technical Summary

Problems solved by technology

When measuring the "U" type Coriolis mass flowmeter with a caliber of DN250, its external dimensions are 1.7 meters X 2 meters, which cannot meet the requirements of users in industrial measurement, and even if it is to be installed, it needs a large enough site. It is not only inconvenient to install, but also has a lot of inconvenience in debugging and daily maintenance operations, and the investment cost is high

Usually "U" type Coriolis mass flowmeter is used, and the tube type of each manufacturer is different. When the tube type is determined, the maximum diameter of the tube type is also determined, such as the maximum DN250 above; the main reason The larger the caliber, the larger the measuring tube, and the greater the driving force required. When the caliber reaches a certain level, the measuring tube can no longer be driven. At the same time, its volume is too large and cannot be processed. It is not easy to install and operate. and high investment costs

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