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Design and research of emergency shutdown equipment for negative pressure inlet condensing turbine
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Yan BAI, Hongyuan LU, Junhui ZHANG, Lijiang MA, Shuai YANG
Thermal Power Generation | 2023, 52(7) : 87 - 91
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Thermal Power Generation | 2023, 52(7): 87-91
• Intelligent management technologies for coal-fired power plants •
Design and research of emergency shutdown equipment for negative pressure inlet condensing turbine
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Yan BAI, Hongyuan LU, Junhui ZHANG, Lijiang MA, Shuai YANG
Affiliations
  • Hangzhou Steam Turbine Power Group Co, Ltd Industrial Turbine Research Institute, Hangzhou 310022, China
Published: 2023-07-25 doi: 10.19666/j.rlfd.202306083
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Conventional industrial steam turbines are usually equipped with quick-closing inlet valves to realize emergency shutdown of the turbine. In this paper, a negative pressure inlet condensing steam turbine was studied has low inlet parameters, large inlet steam volume flow and small pressure difference between inlet and exhaust steam ends. In order to reduce the intake pressure loss, the quick-closing inlet valves are not employed, but a redundant large-diameter rapid vacuum breaker valve is used at the exhaust end of the turbine. When the turbine needs emergency shutdown, open the quick vacuum breaker valve, so that the atmosphere quickly enters the exhaust end of the turbine, the pressure of the exhaust end of the turbine rapidly rises, In this paper, the steam turbine whose inlet and exhaust steam pressure difference is 40 kPa is studied, and the pressure difference between the inlet end and the exhaust end of the turbine could reach 0 within 4 seconds, so that the turbine is closed, and the purpose of emergency shutdown of the turbine is achieved.

condensing turbine  /  negative pressure admission  /  emergency shutdown
Yan BAI, Hongyuan LU, Junhui ZHANG, Lijiang MA, Shuai YANG. Design and research of emergency shutdown equipment for negative pressure inlet condensing turbine[J]. Thermal Power Generation, 2023 , 52 (7) : 87 -91 . DOI: 10.19666/j.rlfd.202306083
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Year 2023 volume 52 Issue 7
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Article Info
doi: 10.19666/j.rlfd.202306083
  • Receive Date：2023-06-13
  • Online Date：2026-01-26
  • Published：2023-07-25
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  • Received：2023-06-13
Affiliations
    Hangzhou Steam Turbine Power Group Co, Ltd Industrial Turbine Research Institute, Hangzhou 310022, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202306083
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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