Turbine condenser

The condensing equipment of a condensing steam turbine typically consists of a surface condenser, exhaust extraction equipment, a condensate pump, a circulating water pump, as well as the piping that connects these components together. The exhaust gas leaves the turbine and enters the condenser, where cooling fluid supplied by the circulating water pump flows in to condense the turbine’s waste steam into water. As the steam turns into water, its volume decreases sharply, thereby creating a vacuum in the enclosed space of the condenser that was previously filled with steam. To maintain this vacuum, an extractor continuously removes air that leaks into the condenser, preventing non-condensable gases from accumulating there and causing the pressure inside the condenser to rise. The condensate collected at the bottom of the condenser is then sent via the condensate pump to the deaerator to be used as boiler feedwater. Thus, the functions of the condensing equipment are: (1) to create and maintain a high vacuum at the turbine’s exhaust outlet; (2) to condense the turbine’s exhaust gas into clean condensate water for reuse as boiler feedwater. In simple terms, the role of the condenser is to convert waste steam into water.

Thank you! The principle is explained very clearly. Since I have never seen this device, my understanding is that the circulating water and the steam discharged by the turbine do not come into direct contact; instead, heat exchange takes place through something similar to a heat exchanger. There are also many ways to create a vacuum; what method is being used here to create a vacuum?

1. Of course, the circulating water does not come into contact with steam~~ Generally, the waste steam and condensate are in the shell side, while the circulating water flows through the tube side; its structure is basically similar to that of a heat exchanger with fixed tube sheets. At the bottom of the shell side, there is a condensate collection tank, which we call a heat well; the condensate is pumped away by a condensate pump. 2. The vacuum-pumping device used here is generally a ejector; there are steam ejectors (using steam) or water ejectors (using water).

Back to Floor 3: 1. Circulating water and waste steam certainly cannot come into contact. Waste steam and condensate flow through the shell side, while circulating water flows through the tube side; the structure is essentially a fixed-tube-sheet heat exchanger. There is a condensate collection tank at the bottom of the shell side, which we call a heat well, and the collected condensate is pumped away using a condensate pump. 2. Generally, a vacuum pump is used here for creating a vacuum; there are steam ejectors as well as water ejectors.

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It involves using a jet pump; once you understand the principle of jet pumps, it becomes clear.

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