Ultrasonic flow meter

Abstract

The invention discloses an ultrasonic flow meter. A measurement module controls and enables two ultrasonic sensors with functions of transmitting and receiving ultrasonic wave to emit the ultrasonic wave passing through a fluid so as to acquire flow rate sensing information of the fluid; and the two ultrasonic sensors receive the ultrasonic wave which comprises the flow rate sensing information of the fluid and is transmitted by the opposite side, convert the ultrasonic wave into electric signals, and transmit the electric signals into the measurement module to be calculated so as to acquire flow information of the fluid. An inflow pipe is connected to a straight pipe at an angle of less than 90 degrees to the negative direction of a horizontal coordinate axis, and an outflow pipe is connected to the straight pipe at an angle of less than 90 degrees to the positive direction of the horizontal coordinate axis; and a measurement conduit is connected into a fluid conduit which needs to measure the flow, and the two ultrasonic sensors are positioned at two ends of the straight pipe respectively. In the ultrasonic flow meter, the measurement conduit is connected into the fluid conduit, and the ultrasonic sensors are positioned at two ends of the straight pipe of the measurement conduit, so the length of effective path of ultrasonic propagation is increased, the strength of effective signals is promoted, then the purpose of increasing the measurement precision is increased, and the ultrasonic flow meter is particularly suitable for measuring the fluid with small flow and low flow rate.

Description

technical field [0001] The invention relates to the field of ultrasonic testing, in particular to an ultrasonic flowmeter which uses an ultrasonic sensor to measure fluid flow. Background technique [0002] When the ultrasonic wave propagates in the flowing fluid, it carries the information of the fluid flow velocity, so the flow velocity of the fluid can be detected through the received ultrasonic wave, and then converted into flow rate to complete the test of the fluid flow rate. According to the detection method, it can be divided into different types of ultrasonic flowmeters such as propagation velocity difference method, Doppler method, beam shift method, noise method and correlation method. [0003] Ultrasonic flowmeter is a non-contact instrument that has only been applied with the rapid development of integrated circuit technology in the past ten years. It is suitable for measuring fluids that are difficult to touch and observe and large pipe diameters. It is linked...

AI Technical Summary

Problems solved by technology

This solution can extend the effective path of ultrasonic propagation, but the structures added inside the pipeline, including two reflection platforms, usually have auxiliary structures such as baffles, which have a greater impact on the fluid flow path, such as the presence of impurities, the system May fail

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