GB/T 17213.8-2015Industrial-process control valves -- Part 8-1: Noise considerations -- Laboratory measurement of noise generated by aerodynamic flow through control valves (English PDF)
工业过程控制阀 第8-1部分：噪声的考虑 实验室内测量空气动力流流经控制阀产生的噪声
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Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Level / Type
National · Recommended
Issue date
December 10, 2015
Implementation date
July 1, 2016
Scope
GB/T 17213.8-2015 is the English-translated version of 工业过程控制阀 第8-1部分：噪声的考虑 实验室内测量空气动力流流经控制阀产生的噪声.
GB/T 17213.8-2015 is the Chinese standard "Industrial-process control valves -- Part 8-1: Noise considerations -- Laboratory measurement of noise generated by aerodynamic flow through control valves".
Its scope clause reads: This Part of GB/T 17213 defines equipment, methods, and procedures for obtaining laboratory measurements of sound pressure levels radiated by control valves and/or associated piping configurations, including fixed restrictions, through which compressible fluids are passing.
Control valves discharging to atmosphere are excluded from this Part. Method A is a uniform method of measuring the radiated noise from the valve and associated test piping and allows a comparison of various measuring results which is beneficial for both user and manufacturer.
The noise criteria are expressed by determining the sound pressure level of the valve under consideration. Method B is a procedure for measuring the sound pressure levels within pipe systems upstream and downstream of the valve under fixed operating conditions.
Since inaccuracies due to the pipe transmission are eliminated, this method is preferred for evaluation of the acoustical characteristic of valves.
The noise characteristics to be determined are useful for the following reasons. a) to compare the performance of different valves; b) to plan measures for noise abatement; c) to determine acoustical characteristics of valves and valve assemblies; d) to enable proper sizing of sound absorbers; e) to determine possible adverse effects on ultra-sonic flow meter measurements.
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Document preview — GB/T 17213.8-2015
National Standard of the People's Republic of China
- ICS
- 23.060.40; 25.040.40
- Classification
- N 16
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Contents
- Foreword3
- 1 Scope7
- 2 Normative references7
- 3 Terms and definitions8
- 4 Symbols9
- 5 Method A (external sound pressure measurement)10
- 6 Method B (internal sound pressure measurement)16
1 Scope
This Part of GB/T 17213 defines equipment, methods, and procedures for obtaining laboratory measurements of sound pressure levels radiated by control valves and/or associated piping configurations, including fixed restrictions, through which compressible fluids are passing.
Control valves discharging to atmosphere are excluded from this Part.
Method A is a uniform method of measuring the radiated noise from the valve and associated test piping and allows a comparison of various measuring results which is beneficial for both user and manufacturer. The noise criteria are expressed by determining the sound pressure level of the valve under consideration.
Method B is a procedure for measuring the sound pressure levels within pipe systems upstream and downstream of the valve under fixed operating conditions. Since inaccuracies due to the pipe transmission are eliminated, this method is preferred for evaluation of the acoustical characteristic of valves.
The noise characteristics to be determined are useful for the following reasons.
a) to compare the performance of different valves;
b) to plan measures for noise abatement;
c) to determine acoustical characteristics of valves and valve assemblies;
d) to enable proper sizing of sound absorbers;
e) to determine possible adverse effects on ultra-sonic flow meter measurements.
2 Normative references
The following referenced documents are indispensable for the application of this
15) Piping geometry factor, Fp 1
16) Any deviation from this standard
NOTE. Volumetric flow rates in m3/h refer to normal conditions, which are 0 °C and 101.325 kPa (1.01325 bar), or standard conditions, which are 15.6 °C and 101.325 kPa (1.01325 bar).
6.2.8 Accuracy
The overall accuracy of this method is limited to ± 3 dB.
6.3 Data evaluation
The data shall be evaluated in accordance with IEC 60534-8-3. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 17213.1-2015 — Industrial-process control valves -- Part 1: Control valve terminology and general considerations
GB/T 17213.10-2015 — Industrial-process control valves -- Part 2-4: Flow capacity -- Inherent flow characteristics and rangeability
GB/T 17213.11-2005 — Industrial-process control valves -- Part 3-2: Dimensions -- Face to face dimensions for rotary control valves except butterfly valves
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