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首页> 外国专利> SEALED CABLE INPUT THROUGH EXTERNAL AND INTERNAL WALLS OF NUCLEAR POWER PLANT CONTAINMENT

SEALED CABLE INPUT THROUGH EXTERNAL AND INTERNAL WALLS OF NUCLEAR POWER PLANT CONTAINMENT

机译：穿过核电厂内外壁的密封电缆输入

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?The invention relates to the field of electrical engineering, and specifically to sealed inlets of electrical circuits into a sealed area of a multi-layered containment shell of a nuclear power station. This design can be used in passages through an external and an internal wall which are subject to relative mutual displacement as a consequence of a seismic phenomenon or thermal expansion of the walls and passage. The problem addressed by the present invention is that of increasing the operating reliability of a sealed cable inlet when high-voltage electrical conductors which have little bending capacity are used. The problem addressed is achieved in that the sealed cable inlet through an external and an internal wall of a containment shell of a nuclear power station comprises an embedded pipe (3) which is arranged in the internal wall (1), with an inlet section (44) of a cable (2) fixed rigidly within said pipe. A means for compensating for a relative movement between the cable (2) and the external wall (11) is mounted in the external wall (11) coaxially with respect to the pipe (3). The compensating means has a tube (19) with a bellows (24) on the external end plane (20) and with a second analogous bellows (25) which is mounted symmetrically on the opposite end plane (21) of the tube (19) at the internal surface (18) of the external wall (11). The free ends (30) and (31) of the two bellows (24) and (25) are of conical design and have internal surfaces (28) and (29) which are support elements for an outlet section (46) of the cable (2), which is arranged freely in the tube (19) with a gap (47) relative to the internal surface (49) of the tube (19). The gap (47) between the braiding (48) along the external surface of the cable (2) and the internal surface (49) of the tube (19) is selected using a design calculation. The gap (47) must not be less than the value of maximum orthogonal thermo-seismic movement in one plane of the internal wall (1) relative to the external wall (11) and change in the coaxial position of the cable (2) in the tube (19).
机译：本发明涉及电气工程领域，特别是涉及进入核电站多层安全壳的密封区域的电路的密封入口。这种设计可用于穿过外壁和内壁的通道，由于地震现象或壁和通道的热膨胀，它们会相对相互移位。本发明解决的问题是当使用弯曲能力小的高压电导体时，提高密封电缆入口的操作可靠性。解决该问题的方法是，通过核电站安全壳的内壁和外壁的密封电缆入口包括一个埋入管（3），埋入管（3）布置在内壁（1）中，入口部分（牢固地固定在所述管内的电缆（2）的44）。用于补偿电缆（2）和外壁（11）之间的相对运动的装置相对于管道（3）同轴地安装在外壁（11）中。补偿装置具有管（19），该管（19）在外部端面（20）上具有波纹管（24），并且具有第二类似的波纹管（25），该第二相似的波纹管（25）对称地安装在管（19）的相对端面（21）上。在外壁（11）的内表面（18）上的“气”。两个波纹管（24）和（25）的自由端（30）和（31）为锥形设计，并具有内表面（28）和（29），它们是电缆出口部分（46）的支撑元件阀（2）自由地布置在管（19）中，相对于管（19）的内表面（49）具有间隙（47）。使用设计计算来选择沿着电缆（2）的外表面的编织物（48）与管（19）的内表面（49）之间的间隙（47）。间隙（47）不得小于内壁（1）相对于外壁（11）的一个平面中的最大正交热地震运动值，并且电缆（2）的同轴位置在管（19）。

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