Lateral steam admission condenser tube bundle

Abstract

The invention provides a lateral steam admission condenser tube bundle which comprises a plurality of heat exchange tubes, the heat exchange tubes form a front-end tube bundle area, a rear-end tube bundle area and an air cooling tube bundle area, the front-end tube bundle area, the rear-end tube bundle area and the air cooling tube bundle area are sequentially arranged in an inner cavity of a condenser in the exhaust direction of the condenser, and the air cooling tube bundle area is provided with an air extraction opening. The front-end tube bundle area is provided with a front middle steam channel in the exhaust direction of the condenser, the rear-end tube bundle area is provided with a rear middle steam channel in the exhaust direction of the condenser, the front middle steam channel is communicated with the rear middle steam channel, and the air cooling tube bundle area is located at the tail end of the rear middle steam channel. The structure is compact, investment of a power plant is saved, meanwhile, a tube bundle steam flow field is uniform and free of vortex, shell side steam resistance is small, heat load distribution is uniform, the steam condensation rate is high, and the heat transfer coefficient and the operation vacuum degree of the condenser are high.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a side steam inlet condenser tube bundle. Background technique [0002] The side inlet steam condenser is a shell-and-tube heat exchanger, which is an important component of the gas-steam combined cycle unit. Its function is to condense the exhaust steam discharged from the low-pressure cylinder of the steam turbine into water and put it Establish and maintain a certain vacuum value. The rationality of the cooling tube bundle arrangement of the condenser has an important impact on the steam condensation process, and has a greater impact on its heat transfer performance and energy consumption of the unit. Unreasonable arrangement of tube bundles will lead to unreasonable steam flow field, resulting in uneven distribution of heat load, local air accumulation, excessive flow resistance, high degree of subcooling, and air leakage (uncondensed steam directly enters the air co...

AI Technical Summary

Problems solved by technology

[0004] The existing domestic side-inlet condenser pipe layout is less, more or less there are problems such as excessive flow resistance on the shell side and large subcooling degree, and the actual heat transfer coefficient is not ideal

However, most of the existing bottom exhaust steam condensers are not compact enough. If they are directly inverted and used for side steam inlet condensers, the investment of side steam inlet condensers will increase significantly.

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