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CEI EN 60534-8-3

Industrial-process control valves Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method

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Organization: CEI
Publication Date: 1 October 2012
Status: active
Page Count: 54
ICS Code (Pressure regulators): 23.060.40
ICS Code (Noise emitted by machines and equipment): 17.140.20
ICS Code (Industrial process measurement and control): 25.040.40
scope:

This part of IEC 60534 establishes a theoretical method to predict the external soundpressure level generated in a control valve and within adjacent pipe expanders by the flow of compressible fluids.

This method considers only single-phase dry gases and vapours and is based on the perfect gas laws.

This standard addresses only the noise generated by aerodynamic processes in valves and in the connected piping. It does not consider any noise generated by reflections from external surfaces or internally by pipe fittings, mechanical vibrations, unstable flow patterns and other unpredictable behaviour.

It is assumed that the downstream piping is straight for a length of at least 2 m from the point where the noise measurement is made.

This method is valid only for steel and steel alloy pipes (see Equations (21) and (23) in 5.5).

The method is applicable to the following single-stage valves: globe (straight pattern and angle pattern), butterfly, rotary plug (eccentric, spherical), ball, and valves with cage trims. Specifically excluded are the full bore ball valves where the product FpC exceeds 50 % of the rated flow coefficient.

For limitations on special low noise trims not covered by this standard, see Clause 8. When the Mach number in the valve outlet exceeds 0,3 for standard trim or 0,2 for low noise trim, the procedure in Clause 7 is used

Document History

CEI EN 60534-8-3
October 1, 2012
Industrial-process control valves Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
This part of IEC 60534 establishes a theoretical method to predict the external soundpressure level generated in a control valve and within adjacent pipe expanders by the flow of compressible fluids....
September 1, 2001
Industrial-process control valves - Part 8-3: Noise considerations - Control valve aerodynamic noise prediction method
La presente Norma propone un metodo teorico per predire il livello di pressione sonora esterno generato in una valvola di regolazione e nei tubi di espansione adiacenti dal flusso di fluidi...
October 1, 1997
Valvole di regolazione per processi industriali - Parte 8: Considerazioni sul rumore - Sezione 3: Previsione del rumore generato da flusso aerodinamico
La presente Norma propone un metodo teorico per prevedere il livello di pressione sonora esterno generato in una valvola di regolazione da parte del flusso di un fluido comprimibile. Tale metodo si...

References

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