NB/T 11643-2024General technical standard of coal batch weigh wagon loading system (English PDF)

Foreword

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 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: China Coal Technology and Engineering Intelligent Storage Technology Co., Ltd., Tiandi Technology Co., Ltd., China Coal Technology and Engineering Beijing Huayu Engineering Co., Ltd., China Coal Technology and Engineering Wuhan Design and Research Institute Co., Ltd., China Coal Xi'an Design and Engineering Co., Ltd., Coal Science and Technology Research Institute Co., Ltd., China Coal Tianjin Design Engineering Co., Ltd., Dadi Engineering Development (Group) Co., Ltd., Coal Industry Hefei Design and Research Institute Co., Ltd. Company, General Technology Group Engineering Design Co., Ltd., Huayang New Materials Technology Group Co., Ltd., Shanxi John Finlay Design Engineering Co., Ltd. Company, China Railway Fourth Survey and Design Institute Group Co., Ltd. The main drafters of this document are. Xiao Yajing, Guo Xin, Sun Guoshun, Li Wei, Chang Jieyun, Li Xu, Sun Dingding, Yan Yan, Yao Shukai, Wu Hui, Liang Bin, Wang Lei and Li Chunlei. General technical standards for coal rapid quantitative loading system

1 Scope

NB/T 11643-2024 is the Chinese standard for the rapid batch weigh loading systems that fill railway wagons and road trucks with coal. It exists because loading is where a mine either makes or loses money on every train. A unit train has to be filled while it rolls slowly and continuously beneath the silo - stopping it costs the slot on the network - so the coal cannot be weighed in the wagon; it has to be weighed above the track, in a bin, and dropped in one shot into a wagon that is already moving. Everything then turns on getting the mass right first time. Underload and the operator gives away paid capacity on every wagon; overload and the wagon is over its rated capacity, which the railway will reject at the weighbridge, and the train goes nowhere. This document fixes what such a system is and how it is proved. It defines the parts by name - weigh bin, surge bin, charge gate, discharge gate, loading chute that adjusts its own height to the passing vehicle, and the weighing system of load cells, indicator and calibration weights - and then tabulates the specification parameters: accuracy classes 0.2, 0.5 and 1.0 as a discontinuous totalising automatic weighing instrument; surge bin capacities of 250 to 400 t and weigh bin capacities of 60 to 100 t for rail, 150 to 300 t and 40 to 80 t for road; and maximum weighing masses of at least 60 t for rail and 40 t for road. The technical requirements cover the service environment from minus 40 to plus 40 degrees Celsius with special design beyond that or above 2 000 m, the weighing system including 8 mm wear-resistant lining in the weigh bin and class M1 calibration weights of a minimum mass tabulated against the system capacity, the main structure, the surge bin and gates and chute, the hydraulic and power distribution systems, electrical safety, loading capacity, video surveillance, intelligent operation, ventilation and dust removal, and heating and drainage. Eight inspection methods and the inspection rules and acceptance requirements follow. It was issued on 24 September 2024 by the National Energy Administration and takes effect on 24 March 2025.

This document specifies the models and specifications, technical requirements, inspection methods, inspection rules and acceptance requirements, standards and Labeling, packaging, transportation and storage, etc. This document is applicable to the rapid quantitative loading system of coal on trains and trucks.

2 Power switchgear and controlgear GB/T 7551 Load Cell

GB/T 7724 Electronic weighing instrument

GB/T 14250 Terminology of Weighing Instruments

GB/T 26389 Method for compiling weighing instrument product models

GB/T 28013 Non-continuous cumulative automatic weighing instruments

GB/T 35449 Automatic quantitative loading system

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3 Terms and definitions

The terms and definitions defined in GB/T 14250, GB/T 4167, GB/T 7551, GB/T 7724, GB/T 35449 and the following apply