Reactor shielding, coolant pressure relief and containment suppression compound device

A composite device and coolant technology, which can be used in reactors, shielding, emergency protection devices, etc., which can solve the problem of coolant pressure relief, less consideration for containment suppression, inability to arrange large pools separately, and low mass and energy release capabilities. problems, to achieve the effect of simple layout, small footprint, and compact equipment layout

CN105632570APending Publication Date: 2016-06-01SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-06-01

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Abstract

The invention discloses a reactor shielding, coolant pressure relief and containment suppression compound device. The reactor shielding, coolant pressure relief and containment suppression compound device comprises a ring-shaped shielding layer which is arranged in a containment, surrounds a pressure vessel and adopts a closed structure, the housing of the ring-shaped shielding layer comprises shielding steel plates, and the ring-shaped shielding layer accommodates shielding water and is provided with a suppression pipeline used for communication between the atmosphere of the containment and the shielding water, and the ring-shaped shielding layer is also provided with a pressure relief pipeline used for leading a coolant in the pressure vessel into the shielding water and a water drainage pipe used for discharging water into a reactor cavity. The reactor shielding, coolant pressure relief and containment suppression compound device can achieve the functions of reactor shielding, coolant pressure relief, containment suppression and water discharge into the reactor cavity.
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Description

technical field

[0001] The present invention relates to shielding structures surrounding reactor pressure vessels (RPVs), and more particularly to a composite device with reactor shielding, coolant depressurization and containment containment suppression. Background technique

[0002] In commercial pressurized water reactor nuclear power plants, the shielding around the reactor pressure vessel (RPV) is basically a concrete structure. Reactor shielding reduces all types of nuclear radiation from the reactor source and prevents excessive activation of components and structures outside the concrete shield by reducing the neutron fluence rate from the core. In the design of reactor shielding for ships, steel-water hybrid structures or other structures (such as doping heavy metals or neutron-absorbing composite materials, etc.) are also used.

[0003] In the reactor design with a small containment, although the reactor shield can be designed with conventional concrete, in order ...

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Embodiment Construction

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] see figure 1 , a composite device for reactor shielding, coolant decompression and containment depressurization, including an annular shielding layer 3 arranged in the containment vessel 2 and surrounding the pressure vessel 1, the annular shielding layer 3 is a closed structure, and the annular shielding layer 3 The shell of the shell is a shielding steel plate, and the shell of the annular shielding layer 3 includes an upper steel plate shielding 7, a side wall shielding steel plate 4 and a multi-layer vertical shielding steel plate (5, 6). There is a gap on the vertical shielding steel plate 5 in the annular shielding layer 3 .

[0022] The annular shielding layer 3 is equipped with (or includes) shielding water 8, the shielding wa...