Combined cycle power plant waste heat boiler water supply system with minimum flow valve and method

• Main Authors: ZHU JIE, WANG XIBIN, ZHANG WENYONG, HU SHANTAO, CHEN CHEN, HU JUNLIANG, QIAN YUANJUN, WEN QIAN, XU FENG
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2024
• Subjects: AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS; BLASTING; CONTROLLING WATER LEVEL; FEED-WATER SUPPLY; HEATING; LIGHTING; MECHANICAL ENGINEERING; PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; STEAM GENERATION; WEAPONS

The invention relates to a combined cycle power plant waste heat boiler water supply system with a minimum flow valve. The combined cycle power plant waste heat boiler water supply system comprises a high-pressure water supply unit, a medium-pressure water supply unit and a low-pressure water supply unit. The high-pressure water supply unit comprises a high-pressure water supply pump, a first minimum flow valve, a first electric shut-off valve, a first flowmeter, a first regulating valve, a high-pressure economizer and a high-pressure steam pocket; the medium-pressure water supply unit comprises a medium-pressure water supply pump, a second minimum flow valve, a second electric shut-off valve, a second flowmeter, a second regulating valve, a medium-pressure economizer and a medium-pressure steam pocket; the low-pressure water supply unit comprises a condenser, a condensate pump, a recirculation pipeline adjusting valve, a low-pressure economizer, a low-pressure steam pocket, a low-pressure recirculation pump