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E-mail
jssc18@163.com
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Phone
15261724159
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No. 8 Donglian Road, Dailou Industrial Concentration Zone, Jinhu County
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Jiangsu Suchuan Instrument Co., Ltd
Long neck nozzle flowmeter
NegotiableUpdate on 01/31
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Overview
The long neck nozzle flowmeter is mainly used in high-pressure or high-temperature high-pressure applications in the power industry. This typical design is adopted for main steam, main feedwater, or desalinated water. It has the characteristics of wide range ratio, shock resistance, low pressure loss, long service life, large measurement range, and measurement accuracy.
Product Details
Suitable for power plants, meets 515 documents, and can issue supervision and inspection certificates
Long neck nozzle flowmeterMeasurement principle:
The measurement principle of a nozzle is based on the throttling principle of fluid mechanics. When the fluid filled in the pipeline flows through the nozzle, the flow velocity will locally contract at the nozzle, thereby accelerating the flow velocity and reducing the static pressure. As a result, a pressure drop or pressure difference is generated before and after the nozzle. The larger the flow rate of the medium, the greater the pressure difference generated before and after the nozzle. Therefore, the magnitude of fluid flow can be measured by measuring the pressure difference. Due to the circular arc contour structure of the nozzle, it has less pressure loss, requires a short straight pipe section, and has high accuracy.
Features:
1. Simple structure and easy installation.
2. The pressure loss of the nozzle is smaller than that of the orifice plate, and the length of the straight pipe section is also required to be shorter.
3. No need for real stream verification, stable performance.
4. Can withstand high temperature, high pressure, and impact.
5. Corrosion resistance is better than orifice plates and has a longer lifespan.
6. High precision, good repeatability, and stable outflow coefficient.
7. The circular arc structure design can measure various liquids, gases, vapors, and various dirty media.
8. The overall forging processing technology has a high cost.
Long neck nozzle flowmeterMain technical parameters:
1. Nominal diameter: 20mm ≤ DN ≤ 630mm.
2. Nominal pressure: PN ≤ 32Mpa.
3. Working temperature: -50 ℃ ≤ t ≤ 550 ℃.
4. Reynolds number range: When 0.30 ≤ β ≤ 0.44, 70000 ≤ ReD ≤ 107; When 0.44 ≤ β ≤ 0.8, 20000 ≤ ReD ≤ 107.
5. 喉径比： 0.30≤β≤0.80。
6. Accuracy: Level 0.5, Level 1.0, Level 1.5, Level 2.0.
7. Reference standards: GB/T2624-2006, JJG640-94.
8. Connection methods: flange connection, welding.
