A multi-purpose plate steam generator

Abstract

The invention discloses a multi-purpose plate steam generator. A plate steam generating assembly includes a heat exchange plate I and a heat exchange plate II, and the surfaces of the heat exchange plates are connected to each other. The heat exchange channel for the reactor coolant is provided on the heat exchange plate I, and the heat exchange channel for the secondary side medium is provided on the heat exchange plate II. The plate surface or the etching grooves on the plate surface are formed in cooperation, and the depth of the etching groove is smaller than the thickness of the heat exchange plate where it is located. The plate steam generator is arranged in the reactor pressure vessel cylinder, and the reactor pressure vessel cylinder is provided with a guide tube, the axial direction of the guide tube is parallel to the axial direction of the reactor pressure vessel cylinder, and at least one of the plate steam generators Distributed in the annular space between the draft tube and the reactor pressure vessel shell. The device has the advantages of compact structure, high heat exchange efficiency, high power volume ratio, low manufacturing cost, stable operation and the like.

Description

technical field [0001] The invention relates to the field of nuclear reactors, in particular to a multipurpose plate steam generator. Background technique [0002] The modular multi-purpose small pressurized water reactor is based on the mature pressurized water reactor nuclear power technology, and adopts the "integrated" reactor design technology, and its safety has reached the technical level of the third generation nuclear energy system. This type of reactor is a reactor in which the steam generator is built into the reactor pressure vessel. Its biggest feature is that the large-diameter pipes of the primary circuit system are greatly shortened, and there is no need to consider the hypothetical large-diameter pipe breach accident (LOCA). Reduced the size of the reactor unit. At present, the economics of this type of reactor is one of the main technical bottlenecks restricting its development. An important means to improve reactor economy is to increase the thermal powe...

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Problems solved by technology

[0003] (1) In order to meet the heat exchange requirements of the reactor, the heat transfer surface required for a single once-through steam generator is greatly increased, resulting in a large increase in the number and height of the heat transfer tubes, which brings great challenges to the design and manufacture of the steam generator. Difficulty, the manufacturing cost of a single steam generator will increase significantly

[0004] (2) With the increase of the size of the steam generator, the size of the reactor pressure vessel with the built-in steam generator will also increase greatly, which makes the equipment manufacturing difficult and costly

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