Flow distribution structure of steam generator

Abstract

The invention discloses a flow distribution structure of a steam generator; the flow distribution structure comprises a steam generator barrel, a sleeve located in the steam generator barrel, a water supply space located between the steam generator barrel and the sleeve and a primary side water supply connecting pipe communicated with the water supply space. An annular plate is fixedly arranged on the outer side wall of the sleeve; the annular plate is obliquely arranged upwards from the side away from the primary side water supply connecting pipe to the side adjacent to the primary side water supply connecting pipe, and liquid distribution holes are formed in the circumferential direction of the annular plate. Compared with the prior art, according to the flow distribution structure of the steam generator, the annular plate obliquely arranged on the sleeve can slow down spiral rising of feed water, internal spiral mixed flow is reduced, and the feed water slowly rises in the feed water space. And the liquid distribution holes are formed in the annular plate, so that the flow in the direction with the high flow speed at the far end of the feed water can be properly reduced, the primary side feed water is redistributed, the feed water flow is more uniform, and heat exchange is more stable.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a flow distribution structure of a steam generator. Background technique [0002] The main function of the large coil once-through steam generator is to pass the water in the secondary circuit through the steam generator, transfer the heat of the hot water in the primary circuit to the secondary circuit, and form superheated steam. [0003] At present, for once-through steam generator primary side wall water supply, whether it is straight wall water supply or side wall water supply, there are problems such as uneven water supply speed and mixed flow, which will easily lead to uneven heat exchange and uneven outlet steam temperature. Affect the uneven flow resistance of primary side water supply. [0004] In view of this, it is indeed necessary to provide a steam generator flow distribution structure to solve the problem of uneven water supply...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome at least one defect in the prior art and provide a steam generator flow distribution structure to solve the problem of uneven water supply on the primary side wall

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