Novel anti-scaling ultrasonic flow meter

Abstract

The invention discloses a novel anti-scaling ultrasonic flow meter. The novel anti-scaling ultrasonic flow meter is characterized in that the lower end at the middle part of a flow meter tube section is provided with a vertical cylindrical hole, and the vertical cylindrical hole is internally provided with a disk-shaped reflecting antenna. The novel anti-scaling ultrasonic flow meter disclosed by the invention has the technical effects and the advantages that the flow characteristic of an ultrasonic flow sensor (tube section) is effectively improved, the metering accuracy and the maintainability of an ultrasonic heat meter are increased, on-site maintenance and replacement for the disk-shaped reflecting antenna can be carried out, the reliability is increased, the service life is prolonged, the centralized heating current situation of China is more suited, and the failure of the ultrasonic heat meter due to the scaling caused by a heat-supply water quality problem is solved; and with the implementation of a country building energy-saving meterage policy, the novel anti-scaling ultrasonic flow meter has an important significance in increasing the metering accuracy of a legal instrument for centralized water supplying and heat metering and improving the flow characteristic.

Description

(1) Technical field: [0001] The invention relates to a novel anti-scaling ultrasonic flowmeter, which is especially suitable for the application occasion of a heat meter for central heating charging and metering. (2) Background technology: [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. Intensive efforts have been made to promulgate corresponding laws and regulations, and central heating metering and charging is imperative. [0003] With the continuous improvement of my country's scientific and technological level and the continuous enhancement of comprehensive national strength, my country's central heating metering and charging instruments, especially household ultrasonic heat meters, have begu...

AI Technical Summary

Problems solved by technology

The resonant frequency of commonly used ultrasonic transducers (F S ) at 2MHz±8%, calculated according to 2MHz, its wavelength is: 1.5mm; when the scale thickness on the reflective antenna (reflector plate) reaches 1.5mm, the ultrasonic beam for measurement will immediately generate Lamb waves on the scale layer attached to the antenna, It seriously affects the accuracy of the flow measurement value, and other factors lead to the failure of the ultrasonic heat meter

[0005] The cable leads of the upstream ultrasonic transducer and the downstream ultrasonic transducer of ordinary ultrasonic heat meters are exposed, which are vulnerable to malicious attacks (such as artificial cutting) and damage during use, resulting in failure of the ultrasonic heat meter

Moreover, ordinary ultrasonic heat meter calculator (integrator) deck structure, reading, meter reading, operation is inconvenient

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