Turbine condenser

I don’t know much about this either; I’m still learning it*. The condenser of the turbine is also known as a recondenser; it uses secondary water (i.e., the return water from the circulating water heat exchanger) to condense the steam that drives the turbine ； The exhaust pumps are divided into primary and secondary types; they are used to evacuate the condenser of the turbine. When putting it into operation, start the secondary pump first; once stability is achieved, activate the primary pump, and then shut down the secondary pump once the desired vacuum level is reached.

A condenser is a device that condenses steam using circulating water; it is equipped with a non-condensable gas extraction port at the top, through which a vacuum pump draws out the non-condensable gases present in the condenser to maintain a vacuum level inside it. The exhaust pumps are divided into the main exhaust pump and the start-up exhaust pump. Before the main exhaust pump is put into operation, the feedwater valve and return water valve on the main exhaust pump must be opened first; the condensate pump is started up to cool the condensate water. The exhaust valve on the water side of the condensate water cooler is opened for exhaust, and the sewage valve on the water side is used to discharge waste water. At the same time, fill the atmospheric safety valve with water until it overflows, and open the shut-off valves before and after the steam trap on the condensate cooler. The main exhaust pumps are divided into a primary pump and a secondary pump. When bringing them into operation, the secondary pump is activated first; once stability is achieved, the primary pump is turned on. When activating each pump, the steam valve should be opened first, doing so gradually to warm the pipes before fully opening it, followed by opening the air valve. When starting the extractor, open the steam valve first and then the air valve. Once the condenser vacuum is stable, the startup exhaust pump can be shut down (first close the exhaust valve, then the steam valve), leaving one set of main exhaust pumps in operation.

The condenser, also known as a condensing unit or recondenser, is an auxiliary component of steam turbines. It typically uses a tube-type (or plate-type) heat exchange mechanism to condense the steam at the driven end of the turbine using circulating water or fresh water, thereby reducing the back pressure； The exhausters are divided into primary and secondary types; they are used to remove the non-condensable gases from the turbine condenser, thereby increasing the vacuum level in the turbine. The main function of the condenser and the extractor is to maintain the vacuum level required for the operation of the steam turbine (the shaft seal steam of the steam turbine must be activated first).

A turbine condenser, also known as a recondenser, serves to condense the exhaust steam from the turbine into water, which is then pumped back to the boiler using a recondenser pump to generate steam again. The exhaust pumps are divided into primary exhaust pumps and secondary exhaust pumps; their function is to remove the non-condensable gases from the recondenser, thereby maintaining the vacuum level in it.

In a turbine system, the condenser serves as a cooling source; it condenses the exhaust steam from a condensing turbine into water and removes the heat released during this condensation process. By creating and maintaining a vacuum at the turbine’s exhaust outlet, it allows the steam entering the turbine to expand to the lowest possible pressure, thereby increasing the available enthalpy drop of the steam； The condensed water is then sent back to the boiler as feedwater for the boiler, where it is reused, thereby improving the thermal efficiency of the entire system. The task of the exhaust pump is to continuously remove the air that leaks into the vapor space on the steam side of the condenser through the gaps in the under-negative-pressure turbine condenser and pipelines, in order to maintain the vacuum in the condenser and ensure good heat transfer.