Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-10-29
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Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-10-29: Discussion question: 280. What is a 1/4 circle nozzle? What are its features?
The 1/4 circle nozzle is a non-standard throttling device; it is also a thin plate, but its opening inlet has the shape of an arc with a radius of 1/4. It is primarily used for measuring the flow rate of media with very high viscosity and low flow velocities, resulting in a low Reynolds number under operating conditions. This is because when the Reynolds number is much below the critical value, the flow coefficient of standard throttling devices changes significantly, whereas that of the 1/4 circle nozzle remains more stable.
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A 1/4 circle nozzle is a non-standard throttling device, namely a 1/4 circle orifice plate. Its inlet section is quarter-circular in shape, used for measuring fluid and gas flows at low Reynolds numbers. Main features: 1. Simple structure, robust construction, and stable performance. 2. The lower limit for measuring flow rate is lower than that of a standard orifice plate, but the upper limit on flow rate is lower than that of an orifice plate. 3. Real-flow calibration may not be required.
Study on the 2nd floor. The 1/4 circle nozzle is a non-standard throttling device; it is also a thin plate, but its opening inlet has the shape of an arc with a radius of 1/4. It is primarily used for measuring the flow rate of media with very high viscosity and low flow velocities, resulting in a low Reynolds number under operating conditions. This is because when the Reynolds number is much below the critical value, the flow coefficient of standard throttling devices changes significantly, whereas that of the 1/4 circle nozzle remains more stable.
The 1/4 circle nozzle is a non-standard throttling device; it is also a thin plate, but its opening inlet has the shape of an arc with a radius of 1/4. It is primarily used for measuring the flow rate of media with very high viscosity and low flow velocities, resulting in a low Reynolds number under operating conditions. This is because when the Reynolds number is much below the critical value, the flow coefficient of standard throttling devices changes significantly, whereas that of the 1/4 circle nozzle remains more stable.
The body part of the modular nozzle features a connection thread of 1/4 inch. Characteristics of this round nozzle: it is suitable for various flow rates at low Reynolds numbers, and is widely used for measuring the flow rate of liquids and gases with relatively low flow speeds.
The 1/4 circle nozzle is a non-standard throttling device; it is also a thin plate, but its opening inlet has the shape of an arc with a radius of 1/4. It is primarily used for measuring the flow rate of media with very high viscosity and low flow velocities, resulting in a low Reynolds number under operating conditions. This is because when the Reynolds number is much below the critical value, the flow coefficient of standard throttling devices changes significantly, whereas that of the 1/4 circle nozzle remains more stable
This is quite professional; I’ll learn about it*.
①A 1/4 circle nozzle is a non-standard throttling device. It is also a thin plate, but the shape of its opening entrance is a quarter-circle with a radius of r (as shown in the figure). ②It is mainly used for measuring the flow rate of media with very high viscosity and very low flow velocity, as well as those with a low Reynolds number under operating conditions. This is because when the Reynolds number is much lower than the critical Reynolds number, the flow coefficient of standard throttle devices varies significantly, whereas the 1/4 circle nozzle remains more stable.
The 1/4 circle nozzle is a non-standard throttling device; it is also a thin plate, but its opening inlet has the shape of an arc with a radius of 1/4. It is primarily used for measuring the flow rate of media with very high viscosity and low flow velocities, resulting in a low Reynolds number under operating conditions. This is because when the Reynolds number is much below the critical value, the flow coefficient of standard throttling devices changes significantly, whereas that of the 1/4 circle nozzle remains more stable.