Westerman, Hattori, Daniels & Adrian, LLP
Gate valve
An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily. A gate valve installed in a transport line for transporting fluid containing particulate material at a coal gasification plant includes a valve box having an inlet portion and an outlet portion in which a channel constituting a part of the transport line is formed; a valve unit, provided between the inlet portion and the outlet portion, which extends in an opening-and-closing direction orthogonal to an axial direction of the channel, and which is movable in the opening-and-closing direction; a wedge plate provided between the valve unit and the inlet portion so as to extend in the opening-and-closing direction; and a guide plate provided between the valve unit and the outlet portion so as to extend in the opening-and-closing direction. Areas between the valve unit and the wedge plate and between and the valve unit and guide plate are sealed by means of surface contact.
Shikoku Electric Power Co., Inc. The Tokyo Electric Power Co., Inc. Hokuriku Electric Power Co. Central Research Institute of Electric Power Industry Hirata Valve Industry Co., Ltd. Electric Power Development Co., Ltd. Chubu Electric Power Co., Inc. Kyushu Electric Power Co., Inc. Hokkaido Electric Power Co., Incorporated Tohoku Electric Power Co., Inc. Clean Coal Power R&D Co., Ltd. The Chugoku Electric Power Co., Inc. The Kansai Electric Power Co., Inc. Mitsubishi Heavy Industries, Ltd.
F
F16K
inventional
Hitoshi Shuji Taizo Yasunari Hirofumi Yasuhiro Soken Yoshihiko Yoshinori
Terada Kameyama Hoshino Shibata Yamada Suzuki Takase Horie Koyama