Device for measuring fluxes of multi track, and method

Abstract

A flow rate measurement device of multiple sound channel is prepared for setting two sound channels on pipe section in cross mode, designing control circuit to measure sound channel flow rate in time-sharing mode based on emitting / receiving circuit to make flow meter obtain linear average flow rate on different sound channel of pipe in time-sharing mode for raising accuracy of measurement.

Description

Technical field

[0001] The invention relates to a flow measuring device and its method, in particular to a flow measuring device and its method with ultrasonic waves as the measuring medium.

Background technique

[0002] Referring to FIG. 1 , an existing monophonic ultrasonic flowmeter includes a pair of ultrasonic transmitting and receiving devices 2 and a flowmeter transmitting / receiving circuit (not shown) arranged outside a pipeline 1 . The monophonic ultrasonic flowmeter measures the linear velocity of the fluid on the propagation path of the ultrasonic sound rays in the fluid, and generally cannot fully express the flow velocity distribution of the entire fluid section in the pipeline. In order to make the flow velocity in a single channel measured by the monophonic ultrasonic flowmeter represent the flow velocity distribution of the entire fluid section, a very demanding measurement environment is required, that is, the installation point of the flowmeter probe is...

Examples

Embodiment Construction

[0016] Basic principle of the present invention is: on the basis of monophonic flowmeter transmitting / receiving circuit, design the control circuit of time-sharing measurement sound channel flow velocity (relative to the flow velocity of slow change, the interval of " time-sharing " here is very short, can be regarded as simultaneous), so that the flowmeter can obtain the linear average flow velocity on different acoustic paths of the pipeline in time-sharing, which increases the representativeness of flow measurement and can effectively reduce the basic error of measurement. This enables the flow meter to obtain accurate fluid flow velocity information even when the fluid flow field is relatively complex. By adding a small amount of control circuits, the flowmeter can obtain flow velocity information sources of two channels.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Referring to FIG....

Technical field

[0001] The invention relates to a flow measuring device and its method, in particular to a flow measuring device and its method with ultrasonic waves as the measuring medium.

Background technique

[0002] Referring to FIG. 1 , an existing monophonic ultrasonic flowmeter includes a pair of ultrasonic transmitting and receiving devices 2 and a flowmeter transmitting / receiving circuit (not shown) arranged outside a pipeline 1 . The monophonic ultrasonic flowmeter measures the linear velocity of the fluid on the propagation path of the ultrasonic sound rays in the fluid, and generally cannot fully express the flow velocity distribution of the entire fluid section in the pipeline. In order to make the flow velocity in a single channel measured by the monophonic ultrasonic flowmeter represent the flow velocity distribution of the entire fluid section, a very demanding measurement environment is required, that is, the installation point of the flowmeter probe is...

Examples

Embodiment Construction

[0016] Basic principle of the present invention is: on the basis of monophonic flowmeter transmitting / receiving circuit, design the control circuit of time-sharing measurement sound channel flow velocity (relative to the flow velocity of slow change, the interval of " time-sharing " here is very short, can be regarded as simultaneous), so that the flowmeter can obtain the linear average flow velocity on different acoustic paths of the pipeline in time-sharing, which increases the representativeness of flow measurement and can effectively reduce the basic error of measurement. This enables the flow meter to obtain accurate fluid flow velocity information even when the fluid flow field is relatively complex. By adding a small amount of control circuits, the flowmeter can obtain flow velocity information sources of two channels.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Referring to FIG....

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