Title:
MIXING APPARATUS FOR SHIP FLOW-GUIDING PROPULSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2010/054534
Kind Code:
A1
Abstract:
A mixing apparatus for a ship flow-guiding propulsion system is provided to solve the jet flow problem of the ship flow-guiding propulsion system. It is composed of three parts a jet pipe (1), a wake pipe (2), and a mixing pipe (3), wherein a nozzle (11) of the jet pipe and an outlet of the wake pipe both are communicated with the mixing pipe. The inlet (21) of the wake pipe is disposed at the side of the jet pipe. The cross section of the jet pipe is smaller than that of mixing pipe. The jet flow and the wake flow are mixed in the mixing chamber. Compared with the flow through the jet nozzle, the flow speed of the flow through the outlet of the mixing pipe is lower and the flow quantity is increased. Thus the stern flow field of the ship is improved and the wave resistance is reduced. Alternatively, the flow field ahead of the screw or impeller is improved, the propulsive efficiency is increased and the damage caused by the cavitation and the water hammer is decreased. The induced velocity and the induced pressure produced by the outside flow of the wake pipe inlet can be used to further improve the stern flow field of the ship and reduce the stern wave resistance.
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| WO/1988/005008 | A WATER JET PROPULSION UNIT |
| WO/2013/056300 | VORTEX GENERATOR |
Inventors:
SUN ZHIWEI (CN)
Application Number:
PCT/CN2009/001245
Publication Date:
May 20, 2010
Filing Date:
November 11, 2009
Export Citation:
Assignee:
SUN ZHIWEI (CN)
International Classes:
B63H11/02
Foreign References:
| CN1833952A | 2006-09-20 | |||
| CN1753812A | 2006-03-29 | |||
| US6662549B2 | 2003-12-16 | |||
| GB1466167A | 1977-03-02 | |||
| DE2107486A1 | 1972-08-31 |
Attorney, Agent or Firm:
QINGDAO LZ PATENT & TRADEMARK OFFICE CO., LTD. (Block B Futai Plaza,No.18, Hong Kong Middle Road,Shinan Distric, Qingdao Shandong 1, CN)
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