GB/T 28246-2012Top gas pressure recovery turbine expander (English PDF)
高炉煤气能量回收透平膨胀机
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 9, 2012
Implementation date
July 1, 2012
Scope
GB/T 28246-2012 is the English-translated version of 高炉煤气能量回收透平膨胀机.
GB/T 28246-2012 is the Chinese standard "Top gas pressure recovery turbine expander".
Its scope clause reads: This standard specifies the axial blast furnace gas energy recovery turbo-expander (hereinafter referred to as the expander) of the basic design, coupling and guard, Control and instrumentation, inspection and testing, guarantee, painting and minimum requirements for the packaging and transport.
This standard applies to the media for the blast furnace gas, the dust content of not more than 10mg/Nm3 expander. Its clauses include terms and definitions.
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Document preview — GB/T 28246-2012
National Standard of the People's Republic of China
- ICS
- 23.140
- Classification
- J 72
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 Blast furnace gas energy recovery turbo-expander
- 3.2 Operating speed nr workingspeed
- 3.3 Maximum continuous operating speed nmax
- 3.4 Minimum continuous operating speed nmin
1 Scope
This standard specifies the axial blast furnace gas energy recovery turbo-expander (hereinafter referred to as the expander) of the basic design, coupling and guard,
Control and instrumentation, inspection and testing, guarantee, painting and minimum requirements for the packaging and transport.
This standard applies to the media for the blast furnace gas, the dust content of not more than 10mg/Nm3 expander.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 191 Packing Pictorial marking
GB/T 2888 fan and blower noise measurement method
GB/T 3766 General technical conditions for hydraulic systems
GB/T 6557 flexible rotor balancing mechanical methods and guidelines
GB/T 9239.1 mechanical vibration balance state (rigid) rotor balance quality requirements - Part 1. Specification and balance tolerance test
GB/T 12467.3 quality requirements for fusion welding of metallic materials - Part 3. General quality requirements
GB/T 13306 signage
GB/T 26137-2010 blast furnace gas energy recovery turbo-expander Thermal Performance Test
JB/T1265 25MW ~ 200MW steam turbine rotor and shaft forgings body
JB/T4365 special lubrication, shaft sealing and control oil system
JB/T6887 fan with iron castings
JB/T8467 steel forgings ultrasonic flaw detection method
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Blast furnace gas energy recovery turbo-expander
The use of blast furnace gas adiabatic expansion of its pressure energy and thermal energy into mechanical energy of the turbine machinery.
3.2 Operating speed nr workingspeed
Speed design conditions in the expander power output shaft.
3.3 Maximum continuous operating speed nmax
Expander allows continuous operation of the maximum speed (r/min) within the specified operating range. In general, based on the speed driven
Maximum continuous operating speed to determine the mechanical power consumption, nmax<=1.05nr.
3.4 Minimum continuous operating speed nmin
Expander rotor allows continuous operation minimum speed (r/min) within the specified operating range.
END: Draft Version (GB/T 28246-2012)
GB/T 13277.1-2023 | GB/T 4976-2017 | GB/T 33625-2017 | GB/T 19075.2-2025 | GB/T 17774-2025 | GB/T 10893-2025 |
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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