公开(公告)号：EP3239566A1

公开(公告)日：2017-11-01

申请号：EP15872782.6

申请日：2015-12-14

申请人： Hitachi-GE Nuclear Energy, Ltd. ,  Okano Valve Mfg. Co. Ltd.

发明人： KAWAHARA Yoshiharu ,  KIYOTOKI Yoshihisa ,  NAKASHIMA Takayoshi ,  SAKEMURA Keisuke ,  KANEMURA Yoshitomo ,  IMOTO Yukio

IPC分类号： F16K1/24 ,  F16K1/22 ,  F16K1/226 ,  F16K1/32 ,  F16K31/05

CPC分类号： F16K25/005 ,  F16K1/22 ,  F16K1/222 ,  F16K1/226 ,  F16K1/24 ,  F16K1/32 ,  F16K31/05

摘要： Provided is a butterfly valve configured so that the sealing performance of the butterfly valve is ensured even if the butterfly valve is exposed to high-temperature fluid and is installed in a high radiation environment. A butterfly valve has: a valve body-side valve seat section which is formed on the outer periphery of a valve body; a valve box-side valve seat section which is formed on a valve box; and a valve movement mechanism which, as a valve shaft pivots, moves the valve body in the direction of extension of a flow passage, between a blocking position at which the valve body-side valve seat section and the valve box-side valve seat section are in contact with each other to close a flow passage, and an open position at which the valve body-side valve seat section and the valve box-side valve seat section are separated from each other to open the flow passage. The valve body-side valve seat section is formed from a laminated material comprising a stainless steel plate and a plate-shaped body which consists of expanded graphite.

摘要翻译： 本发明提供一种蝶阀，其构造成即使蝶阀暴露于高温流体并安装在高辐射环境下也能确保蝶阀的密封性能。 蝶阀具有：阀体侧阀座部，其形成在阀体的外周; 在阀箱上形成的阀箱侧阀座部; 以及阀移动机构，该阀移动机构作为阀轴的枢轴使阀体向流路的延长方向移动，在阀体侧阀座部与阀箱侧阀座部 彼此接触以关闭流动通道，在打开位置，阀体侧阀座部与阀箱侧阀座部彼此分离以打开流动通道。 阀体侧阀座部由包含不锈钢板和由膨胀石墨构成的板状体的层压材料形成。