Multichannel rectangular needle tube flow measurement device

Abstract

The invention relates to the technical field of flow measurement equipment and particularly relates to a multichannel rectangular needle tube flow measurement device. The multichannel rectangular needle tube flow measurement device comprises a mounting seat, wherein a measurement module and a processing module are arranged on the mounting seat; the measurement module comprises a plurality of measurement sensors, measurement sensors comprise measurement ends and detection rods, and the lengths of the measurement ends of the measurement sensors are different; high-pressure measuring pipe and low-pressure measuring pipes are arranged in the detection rods, and the cross sections of probes are V-shaped; and the processing module comprises a differential pressure transmitter which is connected with two pressure balancing pipes, and the two pressure balancing pipes are respectively connected with pressure guiding pipes of the high-pressure measuring pipes and low-pressure measuring pipes. According to the multichannel rectangular needle tube flow measurement device, by increasing measurement points, the mean flow rate of the pipeline can be more approximated, so that the measurement accuracy is greatly improved, and the measurement range ratio is increased. Meanwhile, the multichannel rectangular needle tube flow measurement device is excellent in anti-blocking performance and good in reliability and stability.

Description

technical field [0001] The invention relates to the technical field of flow measurement equipment, in particular to a multi-channel rectangular needle tube flow measurement device. Background technique [0002] At present, under normal circumstances, insertion flowmeters are generally used for gas flow in large-diameter pipelines, most of which are differential pressure insertion flowmeters, such as average velocity tube flowmeters, Pitoba flowmeters, etc. The flow in the pipeline is measured by a differential pressure insertion flow meter. [0003] However, the market often uses a single flowmeter for measurement, and there is only one measurement point. It is difficult to perfectly and ideally reflect the average flow rate of the pipeline medium, thus affecting the accuracy and range ratio of the instrument measurement. Moreover, ordinary Plug-in flowmeters are prone to clogging and other phenomena, and have poor stability. With the further quantification and accuracy of...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a multi-channel rectangular needle tube flow measurement device to solve the technical problems in the prior art, such as range ratio, low accuracy, poor operation stability and large maintenance

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