HORIZONTAL AXIS WIND TURBINE

• US 20120066998A1
• Filed: 09/21/2011
• Published: 03/22/2012
• Est. Priority Date: 09/21/2010
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Fuji Heavy Industries Limited (Subaru Corp.)
• Inventors: TOBINAGA, Ikuo
• Application Number:
  US13/238,106
• Publication Number:
  US 20120066998A1
• Time in Patent Office: Days
• US Class Current: 52/651.01
• CPC Class Codes: F03D 13/20 Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
• CPC Class Codes: F03D 9/25 the apparatus being an electrical generator F03D9/22 takes precedence
• CPC Class Codes: F05B 2260/301 Retaining bolts or nuts
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02E 10/728 Onshore wind turbines

Abstract

The fixed structure for this horizontal axis wind turbine comprises: a base fitting having an inner flange and that is fastened to the base; a tower having a inner flange on the bottom end thereof that is aligned with and connected to the top side of the inner flange of the base fitting; and a frame that is located inside the tower and that has a part mounting section and a leg section that supports the part mounting section above it. An inside end section that protrudes further inward than the inside end of the inner flange of the tower is provided on the inside end of the inner flange of the base fitting, and the leg section is placed on this inside end such that the frame is supported by the base fitting.

Claims

1. A horizontal axis wind turbine comprising:

a main wind turbine unit for generating electricity;

a tower having a top end section and a bottom end section, the top end section of the tower supporting the main wind turbine unit and the bottom end section of the tower fixed to a base, and the lower end section side of the tower having a hollow space formed therein; and

a frame located in the hollow space of the tower, wherein specified equipment that is used for electrical generation performed by the main wind turbine unit is mounted on the frame,

wherein

the tower is provided with a first flange configured to extend in the horizontal direction from the bottom end of the tower toward the inside of the hollow space,

the base is provided with a second flange configured to extend along the first flange and substantially in the same direction with the first flange, the second flange is fixed in the vertical direction to the first flange, and

each of the first flange and the second flange has a proximal end and a distal end, and the frame is supported by the distal end of the first flange or the second flange.

2. The horizontal axis wind turbine according to claim 1, wherein

a recess is provided on the top surface of the second flange on the distal end side, the recess is located further inside the hollow space than the distal end of the first flange;

and

the frame is supported by the recess of the second flange.

3. The horizontal axis wind turbine according to claim 1, wherein

the frame has a leg section that is supported by the distal end of the second flange, and a mounting section that is supported by the leg section and on which the specified equipment is mounted,

the leg section is provided with an extending section which extends from the bottom end of the leg section toward the outside of the tower, and

a space is formed between the leg section and the proximal end of the first flange by the extending section.

4. The horizontal axis wind turbine according to claim 1, further comprising another frame standing on the frame.