GB/T 14098-2020Gas turbine and gas turbine unit Airborne noise measurement Engineering method/simplified method (English PDF)

1 Scope

This standard specifies the measurement method for noise emission of gas turbine units and steam turbine units under stable operating conditions. It specifies the measurement

The measurement method of the sound pressure level of the measuring surface of the envelope sound source and the calculation method of the sound power level produced by the sound source. This standard specifies the measurement environment and

The requirements of the instrument and the technology to obtain the surface sound pressure level measurement, in which the A-weighted sound power level of the sound source and the octave or 1/3 octave sound

The power level is calculated based on the surface sound pressure level. These methods can be used for performance testing, even if the purpose of the test is simply to determine

The sound pressure level around the machine.

This standard applies to gas turbine units and steam turbine units used in the following environments.

--- Power plants and industrial applications (e.g. stationary);

---Onboard or offshore applications, highway and railway vehicle applications.

This standard does not apply to gas turbines in aviation applications.

This standard only applies to gas turbine units and steam turbine units (gas turbines, steam turbines and their driving equipment and auxiliary equipment) located on the platform

The upper part of the measurement surface is continuously enveloped by the platform.

This standard applies to stable operating conditions, and does not include transient operations such as start-up and shutdown with high short-term noise emissions.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.

For undated references, the latest version (including all amendments) applies to this document.

GB/T 3767-2016 Acoustic sound pressure method to determine the sound power level of noise sources and the engineering method for the approximate free field above the sound energy level of the reflecting surface (ISO 3744.2010, IDT)

GB/T 3768-2017 Acoustic sound pressure method is used to determine the sound power level and sound energy level of noise sources using the envelope measurement surface above the reflecting surface

The simple method (ISO 3746.2010, IDT)

ISO 6926 Acoustic Sound Power Level Measurement Standard Sound Source Performance and Calibration Requirements

IEC 60942 Electroacoustic Sound Checker

IEC 61260-1 Electroacoustic Octave and Fractional Octave Filter Part 1.Specification

IEC 61672-1 Electroacoustic Sound Level Meter Part 1.Specification

3 Terms and definitions

The following terms and definitions apply to this document.

GB/T 14478 | GB/T 15468 | JB/T 10384 | GB/T 14099.2 | GB/T 14099.7 | […]