Multichannel ultrasonic flow standard dynamic transmission device and application method thereof

Abstract

The invention relates to a multichannel ultrasonic flow standard dynamic transmission device and an application method of the multichannel ultrasonic flow standard dynamic transmission device. The multichannel ultrasonic flow standard dynamic transmission device comprises a filter, a rectifier, a pressure transmitter, a temperature transmitter and a multichannel ultrasonic flow measuring system. A computer uses a time difference method principle to obtain three values of flow by collecting data measured by three sets of ultrasonic transducers, including the first measuring set, the second measuring set and the third measuring set, in the multichannel ultrasonic flow measuring system, and automatically carries out comparison on every two values, obtained by the measuring sets, of the flow. According to the multichannel ultrasonic flow standard dynamic transmission device and the application method of the multichannel ultrasonic flow standard dynamic transmission device, the number of errors generated in the process of installation is reduced. Due to the facts that the different sets of ultrasonic transducers are used for measuring the flow in a pipeline at the same time, and the mode of mutual check is adopted, accuracy and stability of dynamic transmission are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of flow measurement and verification, and in particular relates to a verification system and method for transferring or correcting measurement results from upper-level measuring instruments to lower-level measuring instruments on site during the measurement process. Background technique [0002] Flow meter is one of the major types of instruments in process automation instruments and devices. It is widely used in various fields of national economy such as metallurgy, electric power, coal, chemical industry, petroleum and people's daily life. Product quality, an important tool to improve economic efficiency and management level occupies an important position in the national economy. With the development of flow meter technology, various types of flow meters have appeared, and the verification work of flow meters has become more and more prominent. Traditional methods have been increasingly unable to meet the...

AI Technical Summary

Problems solved by technology

At present, one or two turbine flowmeters are often used as the transmission standard for the dynamic transmission of the flow value, but the friction between the bearing and the shaft of the turbine flowmeter during use is likely to cause a decrease in accuracy, which leads to easy failures during the verification process. Disadvantages such as reduced accuracy and imperceptible

Lack of a self-inspection and self-inspection ability in the process of transferring standards

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