US 12,136,864 B2
Sealing system for ocean power generation equipment
Fuwei Zhu, Hangzhou (CN); Dong Lin, Hangzhou (CN); Xiaonan Miao, Hangzhou (CN); Zhenhua Wu, Hangzhou (CN); Enle Lin, Hangzhou (CN); Fang Jiang, Hangzhou (CN); Zhendong Chen, Hangzhou (CN); and Hongyue Tian, Hangzhou (CN)
Assigned to HANGZHOU LHD INSTITUTE OF NEW ENERGY, LLC, Hangzhou (CN)
Filed by HANGZHOU LHD INSTITUTE OF NEW ENERGY, LLC, Hangzhou (CN)
Filed on Mar. 11, 2022, as Appl. No. 17/654,516.
Application 17/654,516 is a continuation of application No. PCT/CN2019/105811, filed on Sep. 12, 2019.
Prior Publication US 2022/0200391 A1, Jun. 23, 2022
Int. Cl. H02K 5/132 (2006.01); F03B 11/00 (2006.01); H02K 5/10 (2006.01); H02K 7/18 (2006.01)
CPC H02K 5/132 (2013.01) [F03B 11/006 (2013.01); H02K 5/10 (2013.01); H02K 7/1823 (2013.01); F05B 2240/57 (2013.01); F05B 2260/602 (2013.01); F05B 2260/603 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A sealing system capable of direct removal or replaceable underwater, which is applicable for a horizontal axis ocean power generation device, the ocean power generation device having at least two variable-pitch blades and the sealing system being correspondingly arranged at a root of each of the blades, wherein the sealing system comprises:
at least one first seal; and
at least one second seal located at a side of the at least one first seal proximate to seawater, the at least one second seal not functioning to seal when the ocean power generation device operates normally, the at least one first seal functioning to seal when the ocean power generation device operates normally, and when the at least one first seal needs to be removed or replaced, the at least one second seal operating to function to seal;
wherein the sealing system further comprises a water leakage protection device which is located at a side of the at least one first seal away from seawater and the water leakage protection device comprises
a sealed water storage tank to collect and store seawater leaked from the at least one first seal; and
a drain pipe, one end of the drain pipe is communicated with the sealed water storage tank, the seawater stored in the sealed water storage tank being discharged through the drain pipe.