SGT5-4000F Gas Turbine Improvement and Upgrade Measures Analysis

doi:10.12096/j.2096-4528.pgt.24111

Abstract

Abstract:

Objectives In order to provide technical reference and design basis for the research and subsequent upgrade of China’s independent heavy-duty gas turbine, a series of upgrade measures of SGT5-4000F gas turbine were analyzed. Methods Through the collection, organization and performance analysis of relevant literature and data on the SGT5-4000F gas turbine, a series of upgrade measures taken by Siemens to improve the performance of the gas turbine have been summarized since it was introduced to the market in 1996. Results Through the analysis, it can be concluded that Siemens’ upgrade measures include: increasing compressor mass flow, reducing the cooling air and adopting HCO to improve the power and thermal efficiency. The use of premixed pilot and optimization of the main swirler helps to improve the thermo-acoustic stability and reduce NO _x emission. The validated new materials and new casting technologies can be used to improve the durability, life and operational flexibility. Conclusions The above technical upgrade measures can be used as technical reference and design basis for future improvement and upgrade of China’s independent heavy-duty gas turbine and its derivative models.

Key words: heavy-duty gas turbine, SGT5-4000F, improvement, upgrade, technical validation

CLC Number:

TK 14

Yuheng SHI, Runze LIU, Shilong LI, Dongxiang JIANG. SGT5-4000F Gas Turbine Improvement and Upgrade Measures Analysis[J]. Power Generation Technology, 2024, 45(5): 847-855.

Figures/Tables 14

Fig. 1 Improvement and upgrade of compressor

Fig. 2 Ring combustor of 4000F gas turbine

Fig. 3 HR3 burner

Fig. 4 Combustion system technology validation process

Fig. 5 Improvement steps of gas turbine combustion system

Fig. 6 Main improvement steps for reducing NO x in combustion system

Fig. 7 Impact cooling of ceramic fixed springs in combustion chamber

Fig. 8 Temperature pattern in annular middle plane of combustor

Fig. 9 Comparison of fuel concentration profiles at pilot swirler exit of diffusion pilot and premixed pilot

Fig. 10 Comparison of CFD simulation and experimental test of two improved structural forms of main cyclones

Fig. 11 Testing program for SGT5-4000F upgrade

Fig.12 Modification of the sealing system of the rear turbine stages

Fig.13 Vane 1 after 25 000 h of operation

Fig. 14 Cooling design comparison for leading edge of vane 1

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