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GB/T 29723.5-2019 English PDF (GBT29723.5-2019)

GB/T 29723.5-2019 English PDF (GBT29723.5-2019)

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GB/T 29723.5-2019: Grade and limit of major process energy consumption for coal mine -- Part 5: Main elevating system

This Part of GB/T 29723 specifies the terms and definitions, basic requirements, calculation methods of energy consumption indexes, grade division and limit of energy consumption index for the main elevating system process in use in coal mines. This Part is applicable to the energy consumption calculation and grade division of the main elevating system of underground coal mine. Other types of elevating systems can also refer to it for use.
GB/T 29723.5-2019
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 27.010
D 98
Grade and limit of major process energy consumption
for coal mine - Part 5: Main elevating system
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: JANUARY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Basic requirements ... 5
5 Calculation methods of process energy consumption indexes ... 6
6 Grade division and limit of process energy consumption index... 8
Appendix A (Informative) Relevant conversion factors ... 9
Grade and limit of major process energy consumption
for coal mine - Part 5: Main elevating system
1 Scope
This Part of GB/T 29723 specifies the terms and definitions, basic requirements, calculation methods of energy consumption indexes, grade division and limit of energy consumption index for the main elevating system process in use in coal mines.
This Part is applicable to the energy consumption calculation and grade division of the main elevating system of underground coal mine. Other types of elevating systems can also refer to it for use.
2 Normative references
The following documents are indispensable for the application of this document. For the dated references, only the editions with the dates indicated are applicable to this document. For the undated references, the latest edition (including all the amendments) are applicable to this document.
GB/T 7679.3-2005 Mining machinery terminology - Part 3: Winding
equipment
GB/T 29453 Specification for equipping and managing of the measuring
instrument of energy in coal enterprise
3 Terms and definitions
The terms and definitions defined in GB/T 7679.3-2005 and the following ones apply to this document. For ease of use, some terms and definitions in GB/T 7679.3-2005 are listed repeatedly below.
3.1
Mine hoist
The electromechanical equipment for lifting and releasing personnel and materials in the mine, which drives the hoisting container connected with steel wire rope through the rotation of drum, with a drum diameter of 2 m and above. 5 Calculation methods of process energy consumption
indexes
5.1 Energy use boundary
The switch cabinet, which controls the start, stop and operation of the motor of the mine hoist or mine winder, is used as the starting point of the system's electric energy measurement. The exit of the mine hoist or mine winder is used as the terminal of the main elevating system. Include the energy consumption of equipment such as mine hoist or mine winder traction motor, electric control equipment, safety protection device, and signal system.
5.2 Statistical period
The process energy consumption of main elevating system is based on
statistical data. The statistical period is one year.
5.3 Parameters and ranges
5.3.1 Power consumption (W)
The power consumption of the main elevating system during the statistical period. USE a watt-hour meter for measurement. The watt-hour meter shall be installed on the switch cabinet, which controls the operation of the mine hoist or mine winder.
5.3.2 Elevating mass (Q)
The cumulative mass of personnel or materials lifted by the main elevating system during the statistical period.
5.3.3 Elevating vertical height (H)
The vertical height for the hoisting container from the downhole material-loading point or man-carrying place to the up-hole material-unloading point or man- releasing place.
5.3.4 Inclined shaft lifting angle (??)
The angle BETWEEN the connecting line of the hoisting container from the downhole material-loading point or man-carrying place to the up-hole material- unloading point or man-releasing place AND the horizontal plane.
5.3.5 Mass of steel wire rope (m0)
The product OF the operating length of the hoisting container from the
downhole material-loading point or man-carrying place to the up-hole material- unloading point or man-releasing place AND the mass of the steel wire rope per unit length.
5.3.6 Average mass of personnel or materials elevated at one time (m)
The net mass of personnel or materials for each lift. If multiple hoisting containers are lifted at a time, it is the sum of the loading capacity of each hoisting container.
5.4 Calculation methods
5.4.1 Calculation of process energy consumption of main elevating
system of vertical shaft
The process energy consumption of main elevating system of vertical shaft is calculated according to formula (1):
Where:
Et - The process energy consumption of main elevating system, in kilowatt- hours per ton and hundred meters [kW ?€? h/(t ?€? hm)];
W - The power consumption of the main elevating system, in kilowatt-hours (kW ?€? h);
Q - The cumulative mass of personnel or materials lifted by the main elevating system, in tons (t);
H - The vertical height of mine hoisting, in meters (m);
K - The conversion factor of vertical shaft elevating height. Refer to Appendix A, Table A.1.
5.4.2 Calculation of process energy consumption of main elevating
system of inclined shaft
The process energy consumption of main elevating system of inclined shaft is calculated according to formula (2):

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