TUBULAR-MEMBER FLANGE COUPLING

• US 20100058673A1
• Filed: 08/31/2007
• Published: 03/11/2010
• Est. Priority Date: 08/31/2007
• Status: Abandoned Application

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Numajiri, Tomohiro
• Application Number:
  US12/312,145
• Publication Number:
  US 20100058673A1
• Time in Patent Office: Days
• US Class Current: 52/40
• CPC Class Codes: E04H 12/085 Details of flanges for tubular masts

Abstract

The production process is shortened and the manufacturing costs are reduced. The present invention is a tubular-member flange coupling (8) in which a top or bottom end of a circumferential portion is mated to a bottom or top end of a tubular member (7) to couple the tubular members (7) to each other. A recess (16) having a substantially U-shape in cross-section is provided around a circumferential direction in a surface to be connected to the tubular member (7) at a position radially inward of a surface to be mated to the tubular member (7).

Claims

1. A tubular-member flange coupling in which a top or bottom end of a circumferential portion is mated to a bottom or top end of a tubular member to couple the tubular members to each other,

wherein a recess having a substantially U-shape in cross-section is provided around a circumferential direction in a surface to be connected to the tubular member, at a position radially inward of a surface to be mated to the tubular member.

2. The tubular-member flange coupling according to claim 1,

wherein the radius of curvature of a radially inward bottom surface of the recess is formed to be smaller than the radius of curvature of a radially outward bottom surface of the recess.

3. A wind turbine for wind turbine generator comprising the tubular-member flange coupling according to claim 1.

4. A wind turbine for wind turbine generator comprising the tubular-member flange coupling according to claim 2.