An Ultrasonic Transducer Applied to Water Meter

Abstract

The invention relates to the technical field of ultrasonic transducers, and discloses an ultrasonic transducer applied to a water meter, comprising an ultrasonic transducer shell, an adjusting screw, a sealing rubber ring, a pressure block, a sensor unit, a shielded cable; an adjusting screw Located on the upper end of the transducer shell, the adjusting screw is connected to the transducer shell through a sealing rubber ring. The interior of the transducer shell is composed of a pressure block, a backing layer, a piezoelectric ceramic, a connecting layer, and a shielded cable from top to bottom. Through the adjustment screw and the pressure block, it is welded to the positive and negative electrodes of the piezoelectric ceramics. The present invention solves the problem of waiting for the glue to cure by adding a connection layer to the sensor and using a pressure block to replace the traditional glue to bond piezoelectric ceramics, improves the assembly efficiency, and avoids the degradation of the glue caused by long-term work and the performance of the transducer. The problem of degradation ensures the measurement accuracy and prolongs the life of the transducer. The resonant frequency of the transducer is adjusted by adjusting the screw to realize the pairing of any transducer in the same batch.

Description

technical field [0001] The invention relates to the technical field of ultrasonic transducers, in particular to an ultrasonic transducer applied to a water meter. Background technique [0002] The step-by-step water price policy implemented by the state makes the traditional mechanical water meter unable to meet people's demand for water flow measurement. When promoting the transformation of "one meter for one household", it is required to have a new metering form of water meter with higher accuracy and more complete functions. in people's lives. An ultrasonic water meter with more complete functions and better performance than the traditional mechanical water meter was born, and the ultrasonic transducer is the core component of the ultrasonic water meter. [0003] In the current common ultrasonic transducers, the connection method between the piezoelectric ceramic and the ultrasonic transducer shell is bonded by glue. It is necessary to wait for the glue to be completely ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and defects of the prior art, the present invention provides an ultrasonic transducer applied to a water meter. By adding a connection layer in the sensor unit and using a pressure block to replace the traditional glue to bond piezoelectric ceramics, the solution is solved. It solves the problem of waiting for the glue to cure, and avoids the problem of the performance of the ultrasonic transducer caused by the degradation of the glue performance caused by long-term work.

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