| 发明名称 | Wind turbine blade | ||
| 摘要 | A wind turbine blade is described having a pitch system coupling which is adapted to allow fasteners, such as bolts, of such a coupling to be tightened from the inside of the blade. This removes the need for relatively difficult and expensive external maintenance operations to tighten pitch coupling bolts. The coupling is arranged to present first and second internal bearing surfaces, against which the bolts of the pitch coupling can be tightened. The coupling may comprise a shaped end portion of an inner blade section, and/or the pitch system may comprise an additional bolting collar to facilitate this arrangement. | ||
| 申请公布号 | US9051917(B2) | 申请公布日期 | 2015.06.09 |
| 申请号 | US201213524066 | 申请日期 | 2012.06.15 |
| 申请人 | Envision Energy (Denmark) ApS | 发明人 | Grabau Peter |
| 分类号 | F03D11/00;F03D7/02;F03D1/00;F03D1/06 | 主分类号 | F03D11/00 |
| 代理机构 | Roberts Mlotkowski Safran & Cole, P.C. | 代理人 | Roberts Mlotkowski Safran & Cole, P.C. ;Safran David S. |
| 主权项 | 1. A method for mounting a pitch system in a partial pitch wind turbine blade (18, 20) of at least 35 metres length, the blade (18, 20) having a substantially hollow blade body with an inner blade section (24, 26) and outer blade section (28, 30) between which there is provided a pitch system for pitching the outer blade section (28, 30) relative to the inner blade section (24, 26); characterised in that the method comprises fastening the inner blade section (24, 26) to the pitch system by a fastening action performed only from inside the hollow blade body. | ||
| 地址 | Silkeborg DK | ||