JP2016035476A5

JP2016035476A5 -

Info

Publication number: JP2016035476A5
Application number: JP2015242771A
Authority: JP
Filing date: 2015-12-13
Publication date: 2016-04-28

Description

上記課題を解決し上記目的を達成するために、本発明のうち第１の態様に係るものは、原子炉格納容器内に収容された原子炉を支持する原子炉支持構造であって、原子炉の形状より大きい凹部空間からなり、原子炉を収納する原子炉収納部と、略逆Ｕ字型形状からなり、略逆Ｕ字型形状の下部内側に原子炉両側面を取り付けて原子炉を吊持する逆Ｕ字型形状体と、原子炉収納部の上部に形成された収納室天井体と、収納室天井体上部に設けられた弾性構造からなる弾性構造体と、弾性構造体の上部に設けられ、逆Ｕ字型形状体の中央上部内側の逆円錐形状をした支点部と接する上部が凹部形状である逆Ｕ字型形状体支持体と、を設け、原子炉は、逆Ｕ字型形状体の支点部を中心として略横方向に揺動するとともに、逆Ｕ字型形状体の支点部下部の弾性構造体の弾性力により上下方向に移動することを特徴とするものである。
In order to solve the above problems and achieve the above object, a first aspect of the present invention is a nuclear reactor support structure for supporting a nuclear reactor housed in a nuclear reactor containment vessel, Recessed space that is larger than the shape of the reactor, the reactor storage part that houses the reactor, and a substantially inverted U-shaped shape. The reactor is suspended by attaching both sides of the reactor inside the lower part of the approximately inverted U-shaped shape. An inverted U-shaped body to be held, a storage room ceiling formed at the top of the reactor storage unit, an elastic structure made of an elastic structure provided at the top of the storage room ceiling, and an upper part of the elastic structure An inverted U-shaped body support having an upper portion in contact with an inverted cone-shaped fulcrum part inside the upper center of the inverted U-shaped body, and an upper part in a concave shape. It swings in the horizontal direction around the fulcrum part of the shape body and below the fulcrum part of the inverted U-shaped shape body. It is characterized in that the elastic force of the elastic structure moves vertically.

本発明によれば、逆Ｕ字型形状体により原子炉を吊持しているので、地震の横揺れが生じた場合でも、原子炉は逆Ｕ字型形状体の支点部を中心に原子炉収納部を略横方向に揺動するだけで、原子炉に何ら衝撃が生じることなく、原子炉の放射性物質の漏れを有効に防止することができるとともに、地震の当初の衝撃的な横揺れに対しても、原子炉は原子炉の自重によりほとんど左右に揺れず、原子炉に強い衝撃を与えることなく、原子炉の放射性物質の漏れを有効に防止することができる。また、地震の縦揺れが生じた場合には、逆Ｕ字型形状体の支点部下部の弾性構造体の弾性力により縦方向の揺れが吸収されるので、原子炉に衝撃が生じることなく、原子炉の放射性物質の漏れを有効に防止することができる。さらに、逆Ｕ字型形状体の支点部が支持されている逆Ｕ字型形状体支持体は、弾性構造体に支持されているので、その弾性構造体により逆Ｕ字型形状体の支点部に十分な弾性力を付与することができる。
According to the present invention, since the nuclear reactor is suspended by the inverted U-shaped body, the nuclear reactor is centered on the fulcrum portion of the inverted U-shaped body even when an earthquake roll occurs. By simply swinging the storage part in the horizontal direction, it is possible to effectively prevent the leakage of radioactive material in the reactor without causing any impact on the reactor, and to the shocking roll at the beginning of the earthquake. On the other hand, the nuclear reactor hardly sways from side to side due to its own weight, and can effectively prevent leakage of radioactive material in the nuclear reactor without giving a strong impact to the nuclear reactor. In addition, when an earthquake pitch occurs, the vertical swing is absorbed by the elastic force of the elastic structure below the fulcrum of the inverted U-shaped body, so that there is no impact on the reactor, It is possible to effectively prevent leakage of radioactive materials in the reactor. Further, inverted U-shaped body support fulcrum of the inverted U-shaped body that is supported, so is supported by the elastic structure, the fulcrum portion of the inverted U-shaped member by the elastic structure A sufficient elastic force can be imparted.

本発明のうち第３の態様に係るものは、第１または第２の態様に係る原子炉支持構造であって、原子炉収納部は、原子炉の高さの１．５倍以上の高さであり、原子炉の高さ方向の中央部分は、逆Ｕ字型形状体により原子炉収納部の高さ方向の１／２より下方向で吊持されていることを特徴とするものである。 According to a third aspect of the present invention, there is provided a nuclear reactor support structure according to the first or second aspect, wherein the nuclear reactor storage portion is at least 1.5 times the height of the nuclear reactor. The central part of the reactor in the height direction is suspended by a reverse U-shaped body below 1/2 of the height of the reactor storage part. .

Claims

A nuclear reactor support structure for supporting a nuclear reactor contained in a nuclear reactor containment vessel,
Reactor housing part that contains a recessed space larger than the shape of the reactor and houses the reactor;
An inverted U-shaped body that has a substantially inverted U-shape, attaches both side surfaces of the reactor to the lower inner side of the approximately inverted U-shape, and suspends the reactor;
A storage room ceiling formed at the top of the reactor storage unit;
An elastic structure made of an elastic structure provided on the top of the storage room ceiling;
An inverted U-shaped support body provided at the upper part of the elastic structure and in contact with the inverted cone-shaped fulcrum part inside the upper center of the inverted U-shaped body;
The nuclear reactor swings in a substantially lateral direction around the fulcrum part of the inverted U-shaped body and moves in the vertical direction by the elastic force of the elastic structure below the fulcrum part of the inverted U-shaped body. Reactor support structure characterized by that.

Elasticity provided in the upper part of the elastic structure, having a shape larger than at least the cross-sectional shape of the reactor storage part, and having an inverted U-shaped body insertion hole for inserting the inverted U-shaped body from the lower end The structure upper plate is further provided,
The storage chamber ceiling body is formed with an inverted U-shaped body insertion hole for inserting the inverted U-shaped body from the lower end.
The elastic structure has a shape that is at least larger than the cross-sectional shape of the reactor housing portion, and is formed with an inverted U-shaped body insertion hole for inserting the inverted U-shaped body from the lower end,
2. The inverted U-shaped support body is provided on an upper portion of the elastic structure upper plate, and has a high-strength material that supports a fulcrum portion inside the center upper portion of the inverted U-shaped body. Reactor support structure.

The reactor storage part is 1.5 times or more the height of the reactor,
The central portion of the nuclear reactor in the height direction is suspended by the inverted U-shaped body below a half of the height direction of the nuclear reactor storage unit. Or the nuclear reactor support structure of Claim 2.

The nuclear reactor support structure according to claim 1, wherein the elastic structure is an air cushion body containing air.