Application of second type absorption type heat pump in heat exchange cycle system of power plant

Abstract

The invention discloses application of a second type absorption type heat pump in a heat exchange system of a power plant. The key improvement is that a drive steam inlet of a generator is connected with a first stage steam extraction pipe arranged on a low pressure cylinder of a steam turbine through a pipeline, and a condensate water outlet is connected with a condensate water pipe returning to a boiler through a pipeline; a cooling water inlet of an absorber is connected with the condensate water pipe returning the boiler through a pipeline, and a cooling water outlet is connected with the condensate water pipe returning the boiler through a pipeline; a cooling water inlet of a condensator is connected with a cooling water inlet of a condensor through a pipeline, and a cooling water outlet of the condensator is connected with a cooling water outlet of the condensor through a pipeline; a cooled steam inlet of an evaporator is connected with the first stage steam extraction pipe arranged on the low pressure cylinder of the steam turbine through a pipeline, and a condensed water outlet of the evaporator is connected with the condensate water pipe returning the boiler through a pipeline. The invention has the advantages that the second type absorption type heat pump can reduce the amount of extracting middle-high pressure steam, enhance the energy conversion efficiency and save the resources.

Description

technical field [0001] The invention relates to the application of the second type of absorption heat pump in the heat recovery circulation system of a power plant. Background technique [0002] There are many factors that affect the thermal efficiency of a steam power cycle. The existing technology generally adopts the heat recovery cycle technology, which uses the intermediate extraction steam to heat the condensed water returned to the boiler in the steam power cycle system in the regenerator, and greatly improves the thermal efficiency of the cycle by increasing the temperature of the condensed water returned to the boiler. In order to obtain the highest possible thermal efficiency of the regenerative cycle, according to the specific conditions of the cycle, 3-8 stages of regenerators are often used, and the condensed water entering a certain stage of the regenerator is heated by the staged intermediate extraction steam of different pressures. When the saturation temper...

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Problems solved by technology

[0003] The present invention provides an application of the second type of absorption heat pump in the heat recovery cycle system of the power plant, so as to solve the problem of large power loss of the generator caused by the existing steam extraction heat recovery device of the power plant, and can effectively improve the power generation of the generator. Power, make full use of energy, save energy and reduce emissions

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