Precision-engineered flow restriction device for accurate fluid measurement and control in industrial systems.
A flow orifice/nozzle is a calibrated restriction device installed in pipelines to create a measurable pressure drop proportional to flow rate. It consists of a precisely machined opening (orifice plate) or convergent-divergent nozzle that accelerates fluid flow, enabling calculation of volumetric or mass flow using Bernoulli's principle and continuity equations. These devices are fundamental components in flow metering systems, process control loops, and pressure regulation applications across multiple industries.
诱因 → 失效模式 → 工程缓解
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Orifice plates have sharp-edged openings causing significant pressure loss and vena contracta, while nozzles have smooth convergent profiles that reduce permanent pressure loss and provide better accuracy for high-velocity flows.
Flow rate (Q) is calculated using Q = C × A × √(2ΔP/ρ), where C is discharge coefficient, A is flow area, ΔP is differential pressure, and ρ is fluid density. Coefficients are standardized in ISO 5167.
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