The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2019
Filed:
Aug. 21, 2015
Mitsubishi Heavy Industries Compressor Corporation, Tokyo, JP;
Takuro Koda, Hiroshima, JP;
Abstract
A steam turbine includes: a rotor shaft including a shaft core and a disk portion fixed to the shaft core and that expands toward a radially outer side in the shaft core; rotor blade rows that are fixed to an outer periphery of the disk portion and arranged in an axial direction in which the shaft core extends; a stator vane row adjacent to an upstream side of the rotor blade row in the axial direction for each of the plurality of rotor blade rows; a gap flow passage that extends toward a radially inner side from a steam main flow passage that extends in the axial direction; and a communication passage including a first end that communicates with the gap flow passage and a second end that communicates with a space where steam with higher pressure than pressure of the steam inside the gap flow passage exists.