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Ultrasonic Flowmeter And Its Ultrasonic Sensor
Dec 02, 2016

Description of content

The  invention relates to an ultrasonic flowmeter and an ultrasonic sensor  thereof, and particularly relates to an ultrasonic flowmeter and an  ultrasonic sensor thereof.

Background of the Invention

An  ultrasonic flowmeter is a device in which the propagation speed of an  ultrasonic beam is changed at the time of fluid flow, and the fluid  volume is measured in accordance with a propagation velocity variation. Ultrasonic  flowmeters typically include ultrasonic sensors, which typically  include a housing, a piezoelectric ceramic sheet for converting  electrical and ultrasonic signals, a PCB (Princed Circuits Board) board  for measurement processing, and other small parts. However,  the existing ultrasonic sensors are generally all parts placed in the  same cavity, it is not easy to install and routine maintenance.

Summary of the Invention

The  purpose of the utility model is to provide an ultrasonic flowmeter and  its ultrasonic sensor, which can facilitate installation and daily  maintenance.


In order to realize the object of the utility model, the technical scheme is that:

An  ultrasonic sensor comprises a base, a cap, a PCB board and a silencer  pad stacked in order from the top to the bottom, a damping cushion and a  transducing element stacked in the order from the top to the bottom, And  the bottom of the base is recessed with a second receiving cavity,  wherein the PCB board and the silencing pad are arranged in the first  receiving cavity, and the PCB board and the top end face are filled with  a filling material, A potting sealant, a cushioning cushion and a transducing element are  located in the second receiving cavity, the cap is capped in the opening  of the second receiving cavity, and the first adhesive is adhered  between the cap and the base.

The  PCB board and the transducing element are placed in two different  receiving chambers to reduce the number of the parts placed in the same  accommodating cavity so as to make the internal structure more rational  and the installation simpler. The PCB board is fixed in the first  receiving cavity ,  The transducing element is fixed in the second receiving cavity through  the cap, the cap and the base are bonded together through the first  glue stick for easy installation and daily maintenance; and a silencer  pad is arranged between the PCB board and the bottom of the first  receiving cavity And a shock absorbing pad is placed between the transducing element  and the bottom of the second receiving cavity to reduce the influence  due to the vibration of the ultrasonic sensor to make the operation of  the PCB board and the transducing element more stable.

The  ultrasonic flowmeter includes a measuring pipeline, two ultrasonic  sensors, two ultrasonic sensors are connected with a signal line, a  measuring pipe is provided with an installation mouth corresponding to  the ultrasonic sensor one by one, two installation The mouth is arranged along the axial direction of the measuring pipe. The ultrasonic flowmeter using the above ultrasonic sensor makes the installation and routine maintenance more convenient.

Compared with the prior art, the utility model has the following beneficial effects:

The  PCB board and the transducing element are arranged in two different  holding chambers to reduce the number of parts placed in the same  receiving cavity, to make the internal structure more rational and to  install more easily; the PCB board is fixed in the And  the transducing element is fixed in the second receiving cavity through  the cap, the cap and the base are bonded together through a first glue  stick for convenient installation and daily maintenance; and a space  between the PCB board and the bottom of the first receiving cavity is  placed A  damping pad is placed between the transducing element and the bottom of  the second receiving cavity to reduce the influence due to the  vibration of the ultrasonic sensor to make the work of the PCB board and  the transducer element more stable.