Multi-unit pipe type direct-current steam generator

Abstract

The invention discloses a multi-unit pipe type direct-current steam generator. The steam generator comprises a container body, a sleeve, a partition plate assembly and heat exchange units; a cavity is formed between the sleeve and the inner wall of the container body; the partition plate assembly divides the cavity into an upper cavity body, a middle cavity body and a lower cavity body; a first filler neck and a second filler neck are arranged on the container body; a water inlet channel of the second filler neck, the upper cavity body, the interior of the sleeve, the interiors of the heat exchange units, the lower cavity body and a water outlet channel of the first filler neck communicate with one another in sequence to form a primary side medium channel; the water inlet channel of the first filler neck, the middle cavity body and the water outlet channel of the second filler neck communicate with one another in sequence to form a water return channel; the top of the container body is provided with a steam chamber and a water supply assembly; the heat exchange units are provided with water supply pipelines; and the water supply assembly, the water supply pipelines, an inner flow passage of a heat exchange pipe and the steam chamber communicate with one another in sequence to form a secondary side medium channel. The steam generator has the advantage that the compact arrangement can be realized.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant equipment, in particular to a multi-unit tubular direct-flow steam generator of a pressurized water reactor nuclear power plant. Background technique [0002] At present, the steam generators of most pressurized water reactor nuclear power plants are inverted U-shaped tube steam generators, which mainly include steam-water separators and dryers. Moreover, the existing steam generator is connected with the main equipment such as the reactor pressure vessel and the main pump by the main pipeline, the overall volume is relatively large, and the overall layout takes up a large space, so it is not suitable for the layout occasions such as the sea where the space is limited. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a multi-unit tubular once-through steam generator that is favorable for compact arrangement. [0004] The te...

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Problems solved by technology

Moreover, the existing steam generator is connected with the main equipment such as the reactor pressure vessel and the main pump by the main pipeline, the overall volume is large, and the overall layout takes up a lot of space, so it is not suitable for space-limited layout occasions such as offshore

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