Steam turbine shaft seal heater drainage system

• Main Authors: XIAO JUN, LI RUFEI, GUO JUN
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2022
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

The utility model discloses a steam turbine shaft seal heater drainage system which comprises a shaft seal heater, a low-pressure heater and a condenser. The shaft seal heater is connected with a first-stage water seal, the other end of the first-stage water seal is connected with a first electric valve, and the other end of the first electric valve is connected with the condenser through a third connecting pipe and is connected with the other end of the bypass valve at the same time; the second-stage water seal is connected with a third connecting pipe through a second electric valve; the shaft seal heater is connected with a first pressure sensor, the low-pressure heater is connected with a second pressure sensor, the condenser is connected with a third pressure sensor, the first pressure sensor, the second pressure sensor and the third pressure sensor are all electrically connected with a controller, and the first electric valve and the second electric valve are electrically connected with the controller.