Novel gas ultrasonic transducer

Abstract

The invention discloses a novel gas ultrasonic transducer. The novel gas ultrasonic transducer comprises a shell and a sealing outer sleeve wrapping the shell, wherein a cavity with two open ends is formed in the shell, a matching layer is arranged in an opening in one end of the cavity, the matching layer, the shell and the sealing outer sleeve jointly form an outer shell with an inner cavity, and a balance weight ring, a piezoelectric ceramic chip and a damping pad are coaxially arranged in the inner cavity of the outer shell. According to the novel gas ultrasonic transducer, the problem ofsevere loss of sound waves in air can be effectively solved, ultrasonic attenuation is reduced, the sealing problem at high temperature and the sealing failure problem caused by structural deformationdue to thermal expansion and cold contraction under large temperature difference can be effectively solved, and the ultrasonic transducer can stabilize amplitude attenuation and reduction of ultrasonic signals, improves the accuracy and stability of ultrasonic measurement, and prolongs the service life.

Description

technical field [0001] The invention relates to a novel gas ultrasonic transducer and belongs to the technical field of ultrasonic measurement. Background technique [0002] With the rapid development of my country's national economy, the demand for resources is increasing. Since the global financial crisis, in order to ensure the sustainable development of my country's national economy, energy conservation has already been put on the agenda, and the country has increased energy conservation. In order to reduce emissions, corresponding laws and regulations have been promulgated, and centralized gas supply metering charges and tiered gas price accurate metering charges are imperative. [0003] With the continuous improvement of my country's scientific and technological level and the continuous enhancement of comprehensive national strength, ultrasonic gas meters and ultrasonic flowmeters have begun to be widely used, and their market share has gradually expanded; in particular...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a new type of gas ultrasonic transducer for the above deficiencies, which can effectively solve the problem of severe loss of sound in the air and reduce the attenuation of ultrasonic waves; can effectively solve the problem of sealing at high temperatures, and large The problem of seal failure caused by structural deformation caused by thermal expansion and contraction under temperature difference; it can stabilize the amplitude attenuation and reduction of ultrasonic signals, improve the accuracy and stability of ultrasonic measurement, and increase the service life

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