Ultra-wide-range ultrasonic flowmeter

Abstract

The invention provides an ultra-wide-range ultrasonic flowmeter, and the flowmeter comprises a cuboid sound channel, an airflow cavity in the sound channel, an air inlet and an air outlet, wherein theair inlet and the air outlet are formed in the two ends of the airflow cavity. Mounting grooves are respectively formed in the middles of the upper end and the lower end of the airflow cavity, and aflow guide plate is mounted in the mounting grooves; the airflow cavity is divided into two cavities by the flow guide plate; the upper end of the sound channel is provided with two small-flow probe positioning holes which are symmetrically arranged, and the lower end of the sound channel is provided with two large-flow probe positioning holes which are symmetrically arranged. The small-flow probepositioning holes lead to one cavity body in the airflow cavity, the large-flow probe positioning holes lead to the other cavity body in the airflow cavity, and the distance between the two small-flow probe positioning holes is greater than the distance between the two large-flow probe positioning holes. The flowmeter is divided into two cavities, probes with different specifications and distances can be arranged, the measuring range is wide, and the applicability is high; the middle part is separated by a steel plate, so airflow is stable, turbulence is reduced, and the precision is improved.

Description

technical field [0001] The invention relates to the technical field of ultrasonic flowmeters, in particular to an ultra-wide range ultrasonic flowmeter. Background technique [0002] Ultrasonic flow meter is based on the principle of "speed difference method" to measure the flow of liquid in a circular tube. It adopts advanced multi-pulse technology, signal digital processing technology and error correction technology to make the flow meter more adaptable to the environment of industrial sites , the measurement is more convenient, economical and accurate, but in actual use, in order to obtain accurate data, the existing ultrasonic flowmeters are divided into 6~10m3, 10~16m3, 16~25m3, 25~40m4 There are two kinds of meters, and the meters of each specification can only measure the data within its range. When the required range is large, it is difficult to meet the demand. Contents of the invention [0003] Based on at least one of the above technical problems, the present i...

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Problems solved by technology

[0002] Ultrasonic flow meter is based on the principle of "speed difference method" to measure the flow of liquid in a circular tube. It adopts advanced multi-pulse technology, signal digital processing technology and error correction technology to make the flow meter more adaptable to the environment of industrial sites , the measurement is more convenient, economical and accurate, but in actual use, in order to obtain accurate data, the existing ultrasonic flowmeters are divided into 6~10m3, 10~16m3, 16~25m3, 25~40m4 There are two kinds of meters, and the meters of each specification can only measure the data within its range. When the required range is large, it is difficult to meet the demand

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