Shielded integrated reactor and preparation method thereof

A reactor and reactor container technology, applied in the field of nuclear reactors, can solve problems affecting the application of small reactors, and achieve the effects of being beneficial to weight reduction, improving shielding performance, and reducing central leakage

Active Publication Date: 2022-05-17
安徽中科超核科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small reactors often adopt an integrated layout scheme, and volume and weight are important criteria for it. Generally, it is required that its volume be as small as possible and its weight as light as possible. At the same time, since small reactors are closer to users, their shielding requirements are also higher. Conventional For example, the shielding arrangement of nuclear submarines can no longer meet the volume and weight requirements, and the volume and weight of the shield have seriously affected the application of small reactors

Method used

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  • Shielded integrated reactor and preparation method thereof

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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a shielded integrated reactor in this embodiment includes a reactor vessel 200 and a core 201, a core shroud 202, an inner shield 203, a heat exchanger 204 and main pump 205, the core 201 is arranged in the core shroud 202, the in-core shielding body 203 is arranged around the core shroud 202, the in-core shielding body 203 and the A space for filling coolant 206 is reserved between the reactor vessels 200, the heat exchanger 204 and the main pump 205 are respectively arranged in the inner shield body 203 and communicate with the space respectively, the heat exchanger 204 and the The main pumps 205 respectively contain neutron absorbing materials. The core shroud 202 can be a cylindrical structure without upper and lower cover plates, and the heat exchanger 204 can be a cylindrical structure; the reactor vessel 200 can also be a U-shaped cylinder structure that can withstand relatively high pressure, and Double-layer structure can be used. ...

Embodiment 2

[0037] Such as figure 1 As shown, a shielded integrated reactor in this embodiment includes a reactor vessel 200 and a core 201, a core shroud 202, an inner shield 203, a heat exchanger 204 and main pump 205, the core 201 is arranged in the core shroud 202, the in-core shielding body 203 is arranged around the core shroud 202, the in-core shielding body 203 and the A space for filling coolant 206 is reserved between the reactor vessels 200, the heat exchanger 204 and the main pump 205 are respectively arranged in the inner shield body 203 and communicate with the space respectively, the heat exchanger 204 and the The main pumps 205 respectively contain neutron absorbing materials. The core shroud 202 can be a cylindrical structure without upper and lower cover plates, and the heat exchanger 204 can be a cylindrical structure; the reactor vessel 200 can also be a U-shaped cylinder structure that can withstand relatively high pressure, and Double-layer structure can be used. ...

Embodiment 3

[0047] The preparation method of the shielded integrated reactor of the present embodiment comprises the following steps:

[0048] S1, using stainless steel to roll several cylindrical shells, shielded inner shells and shielded outer shells, the inner diameter of the shielded inner shell is larger than the outer diameter of the core shroud 202, and the outer diameter of the shielded outer shell is smaller than the inner diameter of the reactor vessel 200 ;

[0049] S2, opening a number of through holes corresponding to the size of the cylindrical shells on the two connecting plates, welding one ends of the cylindrical shells to the through holes of one of the connecting plates, and at the same time, shielding the inner shell and one end of the shielding shell is also welded on the same connecting plate, so that several of the cylindrical shells are located between the shielding inner shell and the shielding shell;

[0050] S3, filling the gap formed by the shielding inner she...

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Abstract

The invention relates to a shielded integrated reactor and a preparation method thereof. The shielded integrated reactor includes a reactor vessel and a reactor core, a core shroud, an inner shield, a heat exchanger and a main pump respectively arranged in the reactor vessel , the core is arranged in the core shroud, the inner shield ring is arranged on the periphery of the core shroud, and there is reserved between the inner shield and the reactor vessel for filling the coolant The spacer, the heat exchanger and the main pump are respectively arranged in the inner shielding body and communicate with the spacer respectively, and the heat exchanger and the main pump respectively contain neutron absorbing materials. The invention utilizes the core in the core shroud to generate heat, and then uses the main pump to drive the coolant to flow, so that the heat of the core is transferred to the heat exchanger, and then uses the working fluid to transfer the heat of the heat exchanger; The neutron absorbing material is set in the main pump and the heat exchanger, and the shielding performance of the heat exchanger and the main pump is improved without changing the normal functions of the heat exchanger and the main pump.

Description

technical field [0001] The invention relates to the related technical field of nuclear reactors, in particular to a shielding integrated reactor and a preparation method thereof. Background technique [0002] Nuclear power plants are large-scale reactors with large power, large area, and loose requirements on volume and weight. Generally, concrete or water is used as shielding materials, and the shielding body is bulky; nuclear submarines have strict requirements on space dimensions and are relatively close to the staff. Water, steel, polyethylene and other shielding materials are generally used, through the overall airtightness plus a secondary water shielding system, a lead metal shielding system, a sufficiently thick shell, etc., plus a thickened bulkhead as an independent cabin to ensure that the crew safety; space nuclear power has strict requirements on volume and weight. Due to unmanned operation, shadow shielding is generally used, and only a certain angle of shieldi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C1/32G21C11/02G21C21/00
CPCG21C1/32G21C1/326G21C11/022G21C11/024G21C21/00Y02E30/30
Inventor 不公告发明人
Owner 安徽中科超核科技有限公司
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