Self-diagnosis, self-calibration and self-correction Bitobar intelligent flow meter

Abstract

The invention discloses a self-diagnosis, self-calibration and self-correction Bitobar intelligent flow meter, which comprises a Bitobar flow sensor, differential pressure transmitters and a flow totalizer. The Bitobar flow sensor comprises a static pressure guide pipe and a plurality of full pressure guide pipes. The number of the differential pressure transmitters is multiple. The Bitobar intelligent flow meter further comprises a sensor mounting base. Each full pressure guide pipe is connected with the positive pressure end of the corresponding differential pressure transmitter through a pressure guide pipe by virtue of a full-pressure interface of the full pressure guide pipe; full pressure holes of each full pressure guide pipe are positioned under the mounting sleeve at the bottom ofthe sensor mounting base and are sequentially arranged along the vertical direction; a pressure guide pipe on the static pressure interface of the static pressure guide pipe is connected with the negative pressure ends of a plurality of differential pressure transmitters through a plurality of branch pressure guide pipes; and the signal output ends of the differential pressure transmitters are connected with the corresponding signal input ends of the flow totalizer. The Bitobar intelligent flow meter is equivalent to using a plurality of different Pitobar flow meters to measure the flow of the fluid in the same pipeline, and thus, the measurement result is relatively accurate.

Description

technical field [0001] The invention relates to a bitobar flowmeter, in particular to a self-diagnosing, self-calibrating and self-correcting bitobar intelligent flowmeter. Background technique [0002] At present, there are many types of flow measuring devices for measuring the flow of fluid in pipelines. Bitoba flowmeters are widely used to measure the flow of fluid in pipelines due to their simple structure, convenient installation and relatively high measurement accuracy. The Bitobar flowmeter is mainly composed of a Bitobar flow sensor, a differential pressure transmitter and a flow totalizer. When in use, insert the Bitobar flow sensor into the pipeline vertically from the side wall of the pipeline, and the Bitobar flow sensor The total pressure hole of the pressure head is facing the direction of the fluid flow, and the static pressure hole is facing the direction of the fluid flow. The interface outputs the total pressure and static pressure signals of the fluid flo...

AI Technical Summary

Problems solved by technology

There are many reasons for the inaccuracy of the full pressure signal, such as scaling on the inner wall of the full pressure hole, excessive accumulation of dust, and crystallization, the output full pressure signal changes greatly, which will lead to large errors in measurement accuracy

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