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NB/T 11634-2024: Low noise structural design and noise limit requirements of auxiliary fan used for coal mine
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| NB/T 11634-2024 | English | 299 |
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Low noise structural design and noise limit requirements of auxiliary fan used for coal mine
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NB/T 11634-2024
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Basic data | Standard ID | NB/T 11634-2024 (NB/T11634-2024) | | Description (Translated English) | Low noise structural design and noise limit requirements of auxiliary fan used for coal mine | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D98 | | Classification of International Standard | 73.100.01 | | Word Count Estimation | 14,145 | | Date of Issue | 2024-09-24 | | Date of Implementation | 2025-03-24 | | Issuing agency(ies) | National Energy Administration | NB/T 11634-2024: Low noise structural design and noise limit requirements of auxiliary fan used for coal mine
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Low noise structural design and noise limit requirements of auxiliary fan used for coal mine
Energy Industry Standards of the People's Republic of China
The National Energy Administration released
Low noise structure design and application of local ventilation fan for coal mine
Noise limit requirements
Low noise structural design and noise limit requirements of auxiliary fan
used for coal mine
Published on 2024-09-24
2025-03-24 Implementation
CCS D 98
ICS 73.100.01
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Low noise structure design requirements 2
5 Noise Limit Requirements 3
6 Noise Measurement 3
7 Noise value calculation 6
Table of contents
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Science and Technology Development Department of the China Coal Industry Association.
This document is under the jurisdiction of the Coal Industry Coal Mine Safety Standardization Technical Committee.
This document was drafted by. Chongqing Safety Standard Testing Research Institute Co., Ltd., China Coal Technology and Engineering Group Chongqing Research Institute Co., Ltd., Shanxi Julong Fan
Co., Ltd., Anbiao National Mining Product Safety Marking Center Co., Ltd., Shanxi Anyun Fan Co., Ltd., Xi'an Heavy Equipment Hancheng Coal Mine Machinery Co., Ltd.
Co., Ltd., Shanxi Anrui Fan Electric Co., Ltd., Yuncheng Anhong Energy-saving Explosion-proof Fan Co., Ltd., Yuncheng Hongxin Ventilation Equipment Co., Ltd.
Company, Ping An Electric Co., Ltd., Shanxi Jinyun'an Fan Co., Ltd., Jiangxi Anyuan Ventilation Equipment Co., Ltd., Chongqing Gexinman Technology
Ltd.
The main drafters of this document are. Yan Wenxue, Cheng Bo, Deng Peng, Ju Guanggang, Xiang Yi, Li Chunping, Shi Zhiyuan, Yuan Xiaoping, Xie Haijun, Li Jingzhe, Liu Yongliang,
Zhang Lianjun, Zhang Qinghua, Song Jinquan, Wu Donghui, Wang Rongquan, Duanmu Fengqing, Li Junfeng, Tong Haichao, Wei Bo, He Xiping, Yang Guoping, Tong Hongjiang, Li Xianbao,
Huang Xueman, Guo Pengbo, Yang Liang, Yang Sen, Qin Yubing, Li Shaohui, Wang Fanshu, Yang Huayun, Peng Minghui, Sun Jian, Wang Wei, Lian Bo, Li Pan, Zhang Hao, and Lu Ning.
Low noise structure design and application of local ventilation fan for coal mine
Noise limit requirements
1 Scope
This document specifies the low-noise structural design requirements, noise limit requirements, noise measurement and noise value calculation for local ventilators used in coal mines.
This document applies to the low-noise structural design of local ventilators used in coal mines (hereinafter referred to as "ventilators").
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.
document.
GB/T 1236 Standardized air duct performance test for industrial ventilators
GB/T 2888 Methods of measuring noise of fans and Roots blowers
GB 8624-2012 Classification of combustion performance of building materials and products
GB/T 13813 Test methods and judgment rules for friction spark safety of metal materials used in coal mines
GB/T 17795 Glass wool products for building insulation
JB/T 6891 Technical Specifications for Mufflers for Fans
JB/T 9100 Technical Specifications for Local Ventilators in Mines
MT/T 113 General test methods and judgment rules for flame retardancy and antistatic properties of polymer products used in underground coal mines
MT/T 222 Technical requirements for local ventilation fans for coal mines
MT/T 500 Technical specifications for gas (liquid) driven local ventilators for coal mines
3 Terms and definitions
The terms and definitions defined in GB/T 2888, JB/T 6891 and the following apply to this document.
3.1
A sound level
LA
The noise level measured by a sound level meter through an A-weighted network.
Note. The unit is decibel, symbol dB(A).
[Source. GB/T 2888-2008, 3.1, modified]
3.2
Acoustic source
Noise sources generated by fan casing, air inlet, air outlet, etc.
[Source. GB/T 2888-2008, 3.2, modified]
3.3
Standard length
The distance from the noise measurement point to the sound source point, when measuring the noise at the fan inlet and outlet, when the impeller nominal diameter is ≤1 m, the standard length is 1 m;
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