Heat supply and cooling mixed type condenser

Abstract

The invention belongs to the field of heat supply of a thermal power generating unit, and discloses a heat supply and cooling mixed type condenser. The heat supply and cooling mixed type condenser comprises a shell, wherein the shell is hollow; the upper end and the lower end of the shell are respectively connected with an air inlet pipe and a water outlet pipe; the shell is connected with at least two groups of heat exchange units, and heat supply network circulating water or cooling circulating water flows in the heat exchange units. Heat exchange tube bundles in the adjacent heat exchange units are mutually independent without influencing each other, the heat absorption amount of the heat supply network circulating water can be flexibly regulated by only changing the type of the circulating water (industrial circulating water or the heat supply network circulating water) flowing in the heat exchange tube bundles in different heat exchange units and the flow of the circulating water, the heat supply demand of a heat supply network under a condition of different thermal loads is satisfied, the air discharge amount of a steam turbine does not need to be regulated, and the power generation capability of a unit is guaranteed.

Description

technical field [0001] The invention relates to the technical field of thermal power unit heat supply, in particular to a heat supply and cooling hybrid condenser. Background technique [0002] Cogeneration of heat and power is recognized as an important means to achieve energy saving and emission reduction at home and abroad. The country has issued a number of policies to support the rapid development of cogeneration. In order to further tap the energy-saving potential of conventional heat supply technology for cogeneration in thermal power plants and improve the energy-saving effect of heat supply for cogeneration units, the high back pressure heating technology recovers the waste heat in the exhaust steam of steam turbines in thermal power units. It is used for heating, avoiding the loss of useful steam energy caused by directly using the high-level energy of the steam turbine to extract steam. [0003] Under the high back pressure heating technology, the unit operates a...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the problem that in the different stages of the whole heating cycle, it is difficult or impossible to satisfy different heat and power cogeneration units using high back pressure heating technology under the premise of ensuring normal power generation. The heat demanded by the stage heating needs to adjust the power generation, so that the heat released by the steam turbine can match the heat demanded in the early stage or the end stage of the heat supply, which leads to the problem that the power generation of the steam turbine is limited

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