Metering module structure of integrated ultrasonic water meter and assembling method of metering module structure

Abstract

The invention relates to the technical field of flow metering, and discloses a metering module structure of an integrated ultrasonic water meter and an assembling method of the metering module structure. The included angle of the projection of a connecting line of the water flow direction of a water meter pipe section and the center position of an ultrasonic transducer on a water meter mounting plane is alpha; the matching layer of the transducer and the pipe section are integrally injected, the piezoelectric ceramic is adhered to the upper surface of the matching layer, the absorption layer is tightly pressed on the upper surface of the piezoelectric ceramic, and the piezoelectric ceramic is parallel to a water meter mounting plane; the reflector is located right below the transducer and forms an angle of 45 degrees with the mounting plane, and an included angle alpha is formed between the projection of the normal of the reflector on the mounting plane and the water flow direction; and the water meter metering PCB is connected with the piezoelectric ceramic of the transducer through a conductive structure. The problems that an existing transducer occupies space, is inconvenient to install, unstable in flow field, large in pressure loss, short in service life and the like are solved, the whole meter pipe section is seamless, the transducer is vertically installed, the reflecting mirror is arranged on the edge of the flow field, the structure is reliable, the pressure resistance is high, the occupied space is small, assembling is easy, the service life is long, the flow field is stable, and the result is accurate.

Description

technical field [0001] The invention relates to the technical field of flow measurement, in particular to a metering module structure of an integrated ultrasonic water meter and an assembling method thereof. Background technique [0002] Ultrasonic water meter is the most widely used water meter at present, and the time difference method is its commonly used flow measurement algorithm. The sound signal is converted into an electrical signal, and the flow information is obtained through circuit operation, so the process of sound propagation is very important for ultrasonic water meters. [0003] The commonly used sound path designs of ultrasonic water meters are through-beam and reflection. In the opposite-beam sound path, the ultrasonic transducers that transmit and receive ultrasonic waves are placed facing each other. The ultrasonic transducers are distributed on the upper and lower sides of the pipeline or on the left and right sides, occupying a large space and being un...

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Problems solved by technology

[0004] Aiming at the deficiencies and defects of the prior art, the present invention provides a metering module structure of an integrated ultrasonic water meter and its assembly method, which solves the problem that the current ultrasonic transducer occupies a large space, is inconvenient to install, and has poor flow field stability. , large pressure loss, short life and other difficulties, so as to realize the complete and seamless pipe section of the whole meter, and the vertical installation of the ultrasonic transducer. It has the advantages of reliable structure, strong pressure resistance, small space occupation, convenient assembly and long service life. At the same time , the reflector is placed at the edge of the flow field, which improves the stability of the flow field and makes the measurement results more accurate

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