Westerman, Hattori, Daniels & Adrian, LLP
Shaft sealing structure and reactor coolant pump
The shaft sealing structure includes a seal ring that has abutment portions formed by dividing the seal ring along the axial direction and that is provided around a main shaft in a ring-like manner; a support member that is provided in the seal ring along the circumferential direction of the main shaft; and a thermoswitch that is connected to the support member between the abutment portions and that presses the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during normal operation, in which the seal ring is fixed at a position separated from the main shaft during the normal operation and is moved by the support member toward the center of the main shaft when the temperature rises to a temperature higher than that during the normal operation.
MITSUBISHI HEAVY INDUSTRIES, LTD.
F F F F F G F F Y F
F16J F04D F16J F04D F16J G21C F04D F16J Y02E F04D
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Hitoshi Akihiko Yuji Yasushi Hiroomi Toshihiko Kentarou Yasuhiro Hiroshi Tomoki Masaru Takanobu Hidekazu
Ito Umeda Harada Takayama Sakuma Matsuo Saeki Ikeda Kuzumi Hanada Sakai Otani Uehara