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:
Oct. 16, 2001
Filed:
Oct. 26, 1999
Tetsu Konishi, Takasago, JP;
Keizo Tanaka, Takasago, JP;
Hideyuki Toda, Takasago, JP;
Asaharu Matsuo, Takasago, JP;
Toyokazu Kuwana, Takasago, JP;
Ryotaro Magoshi, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A two stage jointed stationary blade of a high pressure or intermediate pressure steam turbine is formed with a bolt joint in place of a welded joint so as to make detachment and disassembly possible, and thereby facilitating maintenance and inspection work and reducing assembling man-hours. A stationary blade (front stage)(,), outer ring front portion (,) and inner ring front portion (,) are welded into an integral structure. A stationary blade (rear stage),, outer ring rear portion (,) and inner ring rear portion (,) are also welded into an integral structure. The outer ring front portion,, outer ring center portion,and the outer ring rear portion,are mutually engaged via engaging portions (,and,) with precise positioning and then jointed together integrally by bolt (,). The two stage jointed stationary blade can be engaged with moving blades (,), labyrinth seals (,) can be fitted to seal fitting portions (,), and seal fins (,) can be fitted in seal fin grooves (,).