GB/T 35687-2017 English PDF

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GB/T 35687-2017: Specification of LSB for large air cooling steam turbine
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35687-2017	199	Add to Cart	3 days	Specification of LSB for large air cooling steam turbine	Valid

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Basic data

Standard ID: GB/T 35687-2017 (GB/T35687-2017)
Description (Translated English): Specification of LSB for large air cooling steam turbine
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K54
Classification of International Standard: 27.040
Word Count Estimation: 10,140
Date of Issue: 2017-12-29
Date of Implementation: 2018-07-01
Regulation (derived from): National Standards Bulletin 2017 No. 32
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35687-2017: Specification of LSB for large air cooling steam turbine

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification of LSB for large air cooling steam turbine ICS 27.040 K54 National Standards of People's Republic of China Technical Specification for Last Stage Blades of Large Air - cooled Steam Turbines 2017-12-29 Posted 2018-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard proposed by the China Electrical Equipment Industry Association. This standard by the National Standardization Technical Committee steam turbine (SAC/TC172) centralized. This standard was drafted by Dongfang Turbine Co., Ltd., Shanghai Electric Power Equipment Design Institute, Shanghai Electric Power Station Equipment Co., Ltd. Shanghai Steam Turbine Factory, Harbin Turbine Factory Co., Ltd. The main drafters of this standard. Fan Xiaoping, Zhou Ding, Liu Shuangming, Chen Xin, Fang Chonghua, Zhou Ying, Zhao Si Nan, Li Yufeng, Cui Jianguo. Technical Specification for Last Stage Blades of Large Air - cooled Steam Turbines

1 Scope

This standard specifies the large-scale air-cooled turbine last stage rotor blade design, manufacture, dynamic frequency test, back pressure protection, marking, packaging and protection Technical requirements. This standard applies to the power of.200MW level and above (direct air or indirect air-cooled) the end of the rotor blades, other Type of air-cooled steam turbine and medium and small capacity air-cooled steam turbine can be implemented by reference.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 8732 turbine blade steel

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Air-cooled turbine aircoolingsteamturbine Condensing steam turbine that takes advantage of ambient air and takes away heat from steam turbine exhaust through an air cooled heat exchanger. 3.2 Flutter flutter Under the interaction of unsteady aerodynamic force, inertial force and elastic force, the input energy to the vane vibration is continuously input to make the self-excited vibration continue. The formation of aeroelastic instability vibration. 3.3 Dynamic frequency modulation test rotatingvibrationtest Test on the Test of Rotational Vibration Kinetics of Full - Size Physical Vane.

4 design requirements

4.1 aerodynamic design 4.1.1 Principles Pneumatic design should be the last stage leaves the corresponding technical requirements, at the same time should be based on the operating characteristics of air-cooled machine in the working conditions within the scope of change optimization. 4.1.2 Enter the conditions 4.1.2.1 Axial exhaust volumetric flow as a final stage aerodynamic design of the basic input parameters. 4.1.2.2 The end load of the last blade (ie the mass flow per unit discharge area) is used as the basic input parameter for strength design. ......

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