A steam generator with preheater and superheater

Abstract

The invention belongs to the technical field of heat energy utilization, and relates to a steam generator with a preheater and a superheater. The steam generator with the preheater and the superheatercomprises the superheater, an evaporator and the preheater. The steam generator with the preheater and the superheater is mainly characterized in that the superheater, the evaporator and the preheater are serially connected into an integrated structure through a heating medium distribution chamber A and a heating medium distribution chamber B, and by virtue of a group of U-shaped evaporation pipes; and inlet straight pipes of the U-shaped evaporation pipes and an outlet end of a heat exchange pipe A of the superheater communicate with the heating medium distribution chamber A, and outlet straight pipes of the U-shaped evaporation pipes and an inlet end of a heat exchange pipe B of the preheater communicate with the heating medium distribution chamber B. A heating medium sequentially flowsthrough the superheater, the heating medium distribution chamber A, the evaporator, the heating medium distribution chamber B and the preheater to complete the processes of superheating for steam, evaporation for water and preheating for water, and a cold fluid and a hot fluid are enabled to reversely flow, so that the heat transfer temperature difference and the inlet-outlet temperature difference of the heating medium are increased, and the energy utilization rate for the heating medium is increased. The steam generator with the preheater and the superheater is compact in structure, less ininstallation space, and capable of increasing the heat energy utilization rate and efficiency, and obtaining good economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of thermal energy utilization, in particular to a steam generator with a preheater and a superheater. Background technique [0002] In the solar thermal power generation system, due to changes in weather, day and night, and seasons, the solar receiver’s solar thermal load fluctuates greatly, and the follow-up turbogenerator often needs a stable load to achieve efficient, safe and reliable operation, which requires There are heat storage and heat release devices with sufficient capacity to balance the difference between the two. Also in the cogeneration heating system, boilers and turbogenerators can operate efficiently and stably under stable heat loads, but the required heat loads and domestic heat loads exist due to factors such as production cycles, shifts, and living habits of residents. This difference in supply and demand will cause inefficient operation of the heating system and waste of energy. The...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to reduce the waste of energy and the decline in quality caused by the scattered arrangement of heat exchange equipment, and reduce the Reduce energy loss, save energy, improve the efficiency of heat storage and heat release systems, and at the same time make the main equipment compact, save space and reduce costs

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