Mounting/demounting device for combustor for use in gas turbine

• US 5,911,680 A
• Filed: 05/28/1997
• Issued: 06/15/1999
• Est. Priority Date: 09/11/1995
• Status: Expired due to Term

• Current Assignee: mitsubishi hitachi power systems, ltd. (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Takeoka, Ryoji
• Primary Examiner(s): Thorpe, Timothy S.
• Assistant Examiner(s): Kim, Ted
• Application Number:
  US08/864,426
• Time in Patent Office: 748 Days
• Field of Search: 60/39.31, 60/722, 60/740, 60/39.37, 431/154, 431/155, 29/889.1, 29/889.2
• US Class Current: 60/797
• CPC Class Codes: F01D 25/285 Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
• CPC Class Codes: F05D 2230/60 Assembly methods
• CPC Class Codes: F05D 2230/70 Disassembly methods

Abstract

In a gas turbine that is equipped, on a casing (100) thereof, with a plurality of combustors (1) in the circumferential direction thereof, there is provided a rail (4) which is supported on a rail receiving stand (3) that is movable on the ground and which is disposed in the form of a circular annulus or circular arc in correspondence with the disposition of the combustors (1). A slide mechanism (5, 5a, 6, 6a) is mounted on the rail (4) so as to be movable along the rail (4) and is mounted so that the slide mechanism can enter into and retreat from the interior of the casing (100). A grip mechanism (10) is mounted on an end portion of the slide mechanism and grips constituent parts of the combustor (1), such as a tail pipe (7), a nozzle (9) and an inner cylinder (8). Also, in another aspect of the invention, there are provided a rail (12) that is shaped like a circular arc and is revolvably supported on a revolvable carriage (11), and a grip mechanism (13) that grips constituent parts of the combustor

Claims

1. A mounting/demounting device for combustors of a gas turbine that is adapted to mount on or demount from a casing of the gas turbine a plurality of combustors in a circumferential direction of the casing, the mounting/demounting device comprising:

a rail receiving stand which is movably provided on the ground;

a rail which is supported on the rail receiving stand and is disposed in the form of a circular annulus or circular arc in correspondence with the disposition of the combustors;

a slide mechanism which is mounted on the rail so as to be movable along the rail and is mounted so that the slide mechanism can enter into and retreat from an interior of the casing; and

a grip mechanism which is mounted on an end portion of the slide mechanism and grips constituent parts of the combustor including a tail pipe, a nozzle and an inner cylinder.

2. A mounting/demounting device for combustors of a gas turbine as set forth in claim 1, wherein the slide mechanism is composed of a first slide portion that is mounted on the rail and a second slide portion that is mounted to the first slide portion in parallel therewith and that has the grip mechanism mounted on an end portion thereof and that is provided so as to be movable relative to the first slide portion in parallel therewith.

3. A mounting/demounting device for combustors of a gas turbine as set forth in claim 2, wherein the first and second slide portions are respectively equipped with slide members which extend in a direction in which the combustor is mounted and slide movers which are movably mounted on the slide members and further comprising a connection member for connecting the respective slide movers to each other.

4. A mounting/demounting device for combustors of a gas turbine as set forth in claim 1, wherein the rail is constructed of upper and lower semicircular annulus-shaped rail members, the upper and lower semicircular annulus-shaped rail members being assembled demountably.

5. A mounting/demounting device for combustors of a gas turbine as set forth in claim 2, wherein the rail is constructed of upper and lower semicircular annulus-shaped rail members, the upper and lower semicircular annulus-shaped rail members being assembled demountably.

6. A mounting/demounting device for combustors of a gas turbine that is adapted to mount on or demount from a casing of the gas turbine a plurality of combustors in a circumferential direction of the casing, the mounting/demounting device comprising a revolvable carriage that is movably provided on the ground, a rail that is shaped like a circular arc and is revolvably supported on the revolvable carriage, and a grip mechanism which is revolvably supported on the rail and grips constituent parts of the combustor by an end portion thereof.