Reservoir Discharge Flow Function and Fuzhou Dayu Ultrasonic Doppler Velocimeter Application Solution [Dayu Electronics]
The role of reservoir discharge flow: During the flood season, when floods approach, floodwater exceeding the safe water level of the downstream river channel is temporarily stored in the reservoir by controlling the discharge flow, achieving the function of impounding water during the flood season. In the dry season, according to the water demand of downstream cities, industry, and domestic use, the reservoir's stored water is released through discharge facilities to ensure water supply security. For agricultural areas, a stable irrigation water source is provided based on crop growth cycles.
Flow monitoring product selection:
We can use the ultrasonic Doppler velocimeter produced by Fuzhou Dayu Electronics Technology Co., Ltd. to measure the flow velocity and water level of the discharge channel, and then use Dayu Electronics' self-developed flow totalizer to calculate accurate instantaneous flow and cumulative flow. If the Doppler velocimeter is installed strictly according to requirements, the flow error can be within ±5%. Additionally, we need to equip a data acquisition telemetry terminal to collect the real-time flow velocity, real-time water level, instantaneous flow, and cumulative flow measured by the flowmeter. Real-time data is transmitted via wireless 4G to Dayu Electronics' data management platform. In addition, a sub-account can be provided for the management staff to log in and view the data, or the telemetry terminal can interface with the owner's data management platform to transmit raw data to a designated server according to the required transmission frequency.
Product images and structure:
Figure 1: Split-type ultrasonic Doppler flowmeter
Product measurement advantages:
1. Accurate flow velocity measurement: ±1% + 0.01m/s (accuracy verified by the hydrological verification center), flow velocity measurement range: ±0.03m/s ~ 5m/s (customizable to 0.03m/s ~ 10m/s).
2. High water level measurement accuracy: The water depth measurement uses a hydrostatic pressure method, with a measurement range of 0.02m ~ 10m and an accuracy of ±0.5%.
3. Easy installation: Simply install the Doppler velocimeter at the bottom of the channel, avoiding the silt layer.
4. Long product lifespan: During the ten years since its launch, the product has been widely used in reservoir discharge flow projects, irrigation area main/branch canal flow measurement projects, sewage treatment plant discharge monitoring, urban rainwater/sewage discharge monitoring, and industrial wastewater discharge monitoring. The ultrasonic Doppler flowmeter has demonstrated significant measurement advantages, with accurate measurement and an average service life exceeding three years.
5. The product has certain corrosion resistance, making it suitable for a wider range of measurement environments.
Product application examples:
Ultrasonic Doppler velocimeter installation site photo 1: Installed at a location with stable flow after the filter screen in the reservoir discharge monitoring channel to improve measurement accuracy.
Ultrasonic Doppler velocimeter installation site photo 2: Installed in a rectangular channel for reservoir discharge monitoring, it can measure at both low and high water levels, with a minimum water depth requirement of 5 cm.