Loose Anti-rotation lock sleeve for pipe/flange assembly

a technology of anti-rotation lock and flange, which is applied in the direction of hose connection, mechanical equipment, light and heating equipment, etc., can solve the problem of impracticality of replacing this design

Inactive Publication Date: 2012-05-03
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The design effectively prevents pipe rotation relative to the flange, facilitating easier maintenance and replacement by allowing for the use of existing pipes and flanges with added pins, reducing the need for extensive modifications and enhancing sealing capabilities.

Problems solved by technology

Replacement of this design is impractical and can involve removing the existing flange and cutting through the pipe to remove it.

Method used

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  • Loose Anti-rotation lock sleeve for pipe/flange assembly
  • Loose Anti-rotation lock sleeve for pipe/flange assembly
  • Loose Anti-rotation lock sleeve for pipe/flange assembly

Examples

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Embodiment Construction

[0011]Turning to FIG. 1, a loose anti-rotation lock sleeve for a pipe / flange assembly according to embodiments of the invention is shown. A pipe 102 is shown in FIG. 1 as a blow down pipe for a large steam turbine, but it is understood that the pipe / flange assembly of the present invention could be used on any pipe needing steam sealing. Pipe 102 includes at least two pipe pins 104 that extend radially outward from pipe 102. Pipe pins 104 can be added to an existing pipe 102 or a new pipe 102 including pipe pins 104 can be used. As shown in FIG. 1, a flange 106 is also provided, including at least four flange pins 108 that extend radially inward from flange 106. Again, flange pins 108 can be added to an existing flange 106 or a new flange 106 including flange pins 108 can be used. As is understood in the art, flange 106 is coupled to an outer shell 107 surrounding pipe 102 via at least one bolt 109.

[0012]As also shown in FIG. 1, a lock sleeve 110 according to embodiments of this inv...

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Abstract

Disclosed herein is a loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of the pipe relative to the flange. The lock sleeve includes at least two openings in a first end of the lock sleeve configured to receive at least two pipe pins extending radially outward from the pipe. The lock sleeve further includes at least four openings in a second end of the lock sleeve configured to receive at least four flange pins extending radially inward from the flange.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a continuation of U.S. patent application Ser. No. 12 / 553,768, filed Sep. 3, 2009, which is currently pending and received a Notice of Allowance on Dec. 16, 2011.FIELD OF THE INVENTION[0002]The present invention relates generally to flange and pipe assemblies for a steam turbine and more particularly to a loose anti-rotation lock sleeve design for use with flange and pipe assemblies.BACKGROUND OF THE INVENTION[0003]Existing flange and pipe assemblies include an integral seal sleeve-to-pipe design bolted to a shell flange with a tongue and groove gasket design. Replacement of this design is impractical and can involve removing the existing flange and cutting through the pipe to remove it.BRIEF DESCRIPTION OF THE INVENTION[0004]Disclosed herein is a loose anti-rotation lock sleeve design for use in a flange and pipe assembly. The design includes a lock sleeve positioned between a pipe and a flange to prevent rotation of t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): F16L25/00
CPCF16L23/003Y10T403/50F22B37/104F16L23/0286
InventorSWART, THOMAS WILLIAMAMIRTHARAJAH, JEYARUBAN SELLIAHPALMER, JEFFREY LOUIS
OwnerGENERAL ELECTRIC CO