Expansion joint and steam turbine system including the same

Patent metadata

Field	Value
Publication number	US-9631752-B2
Application number	US-201213982787-A
Country	US
Kind code	B2
Filing date	Feb 21, 2012
Priority date	Mar 31, 2011
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

An expansion joint that is provided between a steam turbine outlet and a condenser inlet, including: an upstream baffle tube that has one end secured to an upstream fixing end and the other end as a free end, and forms a steam channel; a downstream baffle tube that has one end secured to a downstream fixed end and the other end as a free end, the free end being relatively movable outside the free end of the upstream baffle tube; and a flexible cylinder that is formed of a non-metal material using a resin sheet, and deformable while airtightly surrounding the baffle tubes.

First claim

The invention claimed is:

1. An expansion joint comprising:
an inner metal cylinder that has one end secured to an upstream fixing end and the other end as a free end, and that forms a steam channel;
an outer metal cylinder that has one end secured to a downstream fixed end and the other end as a free end, the free end being movable relative to the inner metal cylinder at a radial outside of the free end of the inner metal cylinder; and
a flexible cylinder that is formed of a non-metal material using a resin sheet and that is deformable while airtightly surrounding an outer portion of the inner metal cylinder and an outer portion of the outer metal cylinder,
wherein a seal member which includes a glass cloth stacked with a polytetrafluoroethylene sheet and a stainless mesh is provided between the free end of the inner metal cylinder and the free end of the outer metal cylinder,
wherein one end of the seal member is secured to the free end of the inner metal cylinder, and another end of the seal member is secured to the free end of the outer metal cylinder, and
wherein a filling member is filled between the inner metal cylinder and the flexible cylinder, and an end of the filling member in a flow direction of steam is supported by the free end of the outer metal cylinder.

2. The expansion joint according to claim 1 , wherein the flexible cylinder includes a glass cloth stacked on the resin sheet.

3. A steam turbine system for a floating body or a ship for treating liquefied gas comprising:
a steam turbine rotationally driven by steam and having an outlet;
a condenser that condenses steam discharged from the steam turbine and having an inlet; and
an expansion joint which is configured according to claim 1 and which is provided between the steam turbine outlet and the condenser inlet.

Assignees

• Shimakawa Tsukasa
• Nagashima Jun
• Bando Yuji
• Oshita Tomohiro
• Nishijima Hiromu
• Mitsubishi Heavy Ind Compressor Corp

Inventors

• Shimakawa Tsukasa
• Nagashima Jun
• Bando Yuji
• Oshita Tomohiro
• Nishijima Hiromu

Classifications

• F02C7/28

  Arrangement of seals · CPC title

• Y02T50/671

  Cross-Sectional Technologies · mapped topic

• F16L51/024

  non-metallic · CPC title

• F16L27/107 Primary

  the ends of the pipe being interconnected by a flexible sleeve · CPC title

• F01K11/02

  the engines being turbines · CPC title