Ultrasonic wave flow rate metering device

Abstract

The invention relates to an ultrasonic wave flow rate metering device, which comprises a measuring pipe body and a signal processing device. The ultrasonic wave flow rate metering device is characterized in that a lug boss sealing body matched with a pipeline flange of fluid to be measured is arranged at each of two ends of the measuring pipe body; paired ultrasonic transducer installing holes are formed in the inner side of the measuring pipe body. The ultrasonic transducer installing holes are formed in the inner side of the measuring pipe body, and extend into spaces of the lug boss sealing bodies; the forming positions of the ultrasonic transducer installing holes meet the requirements that the measuring signals of two ultrasonic transducers can realize the direct irradiation; the measuring signals of the ultrasonic transducers are introduced into a signal processing device through a signal wire. The total length of the ultrasonic wave flow rate metering device is smaller than the length of the conventional pipe section type flow rate metering device; the clamping installation is convenient to realize. The two sides of the ultrasonic wave flow rate metering device are connected with a water supply pipe through flanges; then, the signal processing device is positioned in a space formed by the water pipe flanges positioned at the two sides and the measuring pipe body; the position is hidden; the protection on the signal processing device is facilitated. A battery cabin and a main board cabin of the signal processing device use separated design, so that the maintenance is convenient.

Description

technical field [0001] The invention belongs to the field of flow measurement, in particular to an ultrasonic flow measurement device. Background technique [0002] The flow metering device usually includes an ultrasonic transducer and a signal processing device arranged on the measuring body. In the prior art, the ultrasonic transducer is usually fixedly installed on the pipe wall outside the measuring body of the flow metering device, and the emitting surface of the ultrasonic transducer passes through the pipe wall to contact the fluid in the measuring body, and the ultrasonic The transducer signal is transmitted and received to realize the function of measuring fluid. [0003] The signal processing device is generally fixed on the measuring body through a strut, and the signal processing device is higher than the outer diameter of the flange. The ultrasonic transducer is loaded from the outside of the measuring body, sealed and fixed by O-rings and screw parts, and the...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the transducer of the current ultrasonic flow metering device is fixedly installed on the pipe wall outside the flow metering device, which is easily damaged, easily affected by the interference of different factors, the measurement accuracy, the waterproof effect is poor, and it is not beautiful. question

[0006] At the same time, the invention also solves the problem that the installation position of the signal processing device is higher than the flange and is exposed on the outside of the pipeline, which may easily cause accidental contact of the signal processing device; the installation and operation of the ultrasonic transducer is complicated, and the appearance of the signal line transmission pipeline is irregular. It is not conducive to the protection of signal lines; the gasket does not match the ultrasonic flowmeter, the gasket needs to be manually held during installation, the sealing surface of the gasket and the ultrasonic flowmeter is not concentric after installation, and the water flow is disturbed; and the cost of the metal measurement body is high , heavy quality, time-consuming and labor-intensive processing, and uncontrollable processing errors, which affect the accuracy and application of ultrasonic measurement to a certain extent

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