Hangzhou Shutong introduces vortex flowmeter using anti-vibration new technology

At the MICONEX exhibition in 2009, Hangzhou Shutong High-end Instrument Co., Ltd. launched a domestically innovative vortex flowmeter—STLU series of intelligent anti-vibration vortex flowmeters, which brought the domestic vortex flowmeter to a new s level. The flowmeter combines a number of innovative technologies such as sensor design, circuit hardware and software to meet the harshest working environment and the most extensive flow measurement applications. It exceeds the domestic traditional vortex flowmeter products, providing users with more accurate, More reliable flow measurement.

Vortex flowmeters are fluid vibration flowmeters. Users have been troubled by their anti-vibration problems in field applications, which also limits the promotion of vortex flowmeters. After years of research and field application of vortex flowmeters, Hangzhou Shutong Company has achieved a number of innovative technologies and patents, which have well solved the vibration resistance of vibrating flowmeters.

1. Anti-vibration design of proprietary flow sensor

The enhancement of anti-vibration performance of STLU series vortex flowmeter is mainly due to the self-vibration design of flow sensor. The sensor of this flowmeter is designed using the principle of self-vibration differential measurement. The sensor is placed in the watch body, which is sturdy, reliable, shock-free, and dirt-resistant, minimizing the impact of pipeline vibration and pulsating flow. Vibration at 2g It still maintains stable and accurate flow measurement under the environment.

2. Advanced circuit design and digital signal processing methods

The flowmeter comprehensively applies a variety of advanced circuit signal processing technologies, which can stably measure weak small flow signals. Using adaptive noise suppression, spectrum analysis, adaptive filtering technology designed spectrum tracking adaptive filtering algorithm, can automatically track the vortex signal adjustment filter, not affected by analog drift, completely eliminate interference and noise signals.

3. High reliability design

(1) Measurement accuracy:

· Patented anti-vibration sensor design;

· According to the information such as signal spectrum and signal strength to judge the flow field status, improve the measurement reliability;

(2) High temperature and high pressure tightness test:

(3) Circuit design:

· The components are all above industrial grade standards;

· Three-wire isolation module design, high reliability

· Two-wire system isolated power supply design, high reliability

· Interface electrostatic protection design

· Lightning protection design at power entrance

Based on the application of the above three innovative technologies, the STLU series of intelligent anti-vibration vortex flowmeters (under 2g random spectrum vibration environment), the minimum measurable lower limit gas flow rate is 4m / s, no flow and no signal output under vibration environment; normal working environment The lower limit of the gas flow of DN50 caliber can reach 15m3 / h, and the range ratio can reach 30: 1.

The application of new anti-vibration technology has broadened the measurement range and application of fluid vibration flowmeters, and improved the reliability of the flowmeter. It can be applied to vortex flowmeters and precession vortex flowmeters.

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