一种联合循环机组加速启动与安全解列控制方法及系统
By employing a dual-mode vacuum regulation strategy, the vacuum level is reduced during the medium-speed warm-up of the gas-steam combined cycle unit using a vacuum disruption regulating valve and a standby pump. This accelerates the warm-up and rapidly reduces the vacuum level under high vacuum conditions, solving the problems of long medium-speed warm-up time and difficult high-vacuum shutdown. This enables accelerated start-up and safe disconnection of the unit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN THERMAL POWER RES INST CO LTD
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies result in long warm-up times at medium speeds during cold starts of gas-fired combined cycle units, and slow speed reduction during shutdown under high vacuum conditions, which can easily trigger clutch protection and lead to unplanned shutdowns. Existing solutions are also costly and complex.
A dual-mode vacuum regulation strategy is adopted. During medium-speed warm-up, the vacuum level is reduced to accelerate warm-up through the vacuum disruption regulating valve. During high-vacuum conditions, the vacuum level is rapidly reduced to accelerate shutdown. The vacuum level is then restored using the vacuum disruption isolation valve and the backup pump.
Without increasing system complexity and investment costs, it shortens unit start-up time and shutdown process, and improves unit flexibility and safety.
Smart Images
Figure CN122407322A_ABST