• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A marine ring propeller comprising blades, each having parallel edges and a constant cross-section, and a ring in the form of an annular shroud fixed to the outer ends of the blades. The shroud is typically frusto-conical on its inner surface and curved on its outer surface to provide an aerofoil cross-section, apart from the leading edge which is provided with a concave bevel on either or both of the inner and outer surfaces.
    公开号:SU1041027A3
    申请号:SU792806012
    申请日:1979-08-29
    公开日:1983-09-07
    发明作者:Грэхэм Керч Лесли
    申请人:Пропеллер Дизайн Лимитед (Фирма)；
    IPC主号:
    专利说明:

    2. The propeller according to claim 1, characterized in that the inner surface of the leading edge of the collar is angled relative to the longitudinal axis of the nozzle. 3. The propeller of PP, 1 and 2, which is distinguished by the fact that the outer surface of the front edge of the annular attachment is beveled at an angle of 5-35 with respect to the longitudinal axis of the nozzle. 10 7 k. Propeller on PP. 1, 2 and 3, characterized in that the ratio of the length of the annular nozzle to the length of the projection of the chord of the blade cross section to the longitudinal axis of the annular nozzle is within (1: 1) - (5: 1) .5. Propeller on PP. 1, 2, 3 and k, differing in that the number of blades is from two to twelve.
    FIELD OF THE INVENTION The invention relates to shipbuilding and relates to the design of ship propellers in ring nozzles.
    The ship propeller in the annular nozzle is known, which contains a hub and lobes, rigidly connected with the outer ends to the annular nozzle LI 1. Such screws allow to slightly increase the hydrodynamic efficiency of the complex compared to a conventional propeller, however this efficiency is still lower than that of the screws. fixed nozzles.
    A ship propeller is also known, which contains a hub and blades rigidly connected by external ends with an annular nozzle having an internal taper and made with a constant cross section along the longitudinal blade in the form of a wing profile 2 1.
    The disadvantage of such a screw is low efficiency and cavitation characteristics.
    The purpose of the invention is to increase the efficiency and improve the cavitation characteristics.
    To achieve the goal, the propeller in the annular nozzle containing the hub and the blades are rigidly connected by external ends with an annular nozzle having an internal taper and made with a constant cross section in the form of a wing profile, the angle of internal taper of the annular nozzle is. 6-18; The blades are mounted in an annular nozzle with an angle of attack of the chord of the blade cross section varying from 20 to 80 °, and the longitudinal axes of the blades are inclined at an angle from 10 ° forward to 20 ° back to the plane perpendicular to the axis of the screw.
    In addition, the inner surface of the front edge of the annular nozzle can be beveled at an angle relative to the longitudinal axis of the nozzle, the outer surface of the front edge of the nozzle can be beveled at an angle of 5-35 ° relative to the longitudinal axis of the nozzle, the ratio of the length of the annular nozzle to the length of the chord projection the cross section of the blade on the longitudinal axis of the annular nozzle can be in the range (1: 1) - (5: 1), and the number of fossils is advisable to choose from two to twelve.
    FIG. 1 presented, proposed
    screw when viewed from the side in section along the longitudinal axis; in fig. 2 - the same, when viewed from the front in the variant with three blades; on. FIG. 3 — cross sectional profile and its angular position; in fig. k is a variant of a screw with six blades; in fig. 5 - the same, with twelve blades mi.
    The ship propeller contains a hub 1 and blades 2, the outer ends of which are rigidly connected to the ring-end; Set 3 "Blades 2 have a constant cross section in the form of a wing profile. The inner surface of the nozzle 3 is tapered with the taper angle jO-lR, the blades 2 are mounted in the nozzle 3 with the angle of attack of the chord of the cross section of the blade 20-80, and
    权利要求:
    Claims (5)
    [1]
    1. SHIP'S ROWING SCREW IN A RING NOZZLE, comprising a hub 1 and blades rigidly connected by external ends with an annular nozzle having an internal taper and made with a constant cross section along the length of the blade in the form of a wing profile, characterized in that, in order to increase Efficiency and improvement, cavitation characteristics, the angle of the internal taper of the annular nozzle is in the range of 0-18 °, the blades are installed in the annular nozzle with the angle of attack of the chord · the cross section of the blade, varying in the range of 20-80 °, and the longitudinal s axis of the blades are inclined at an angle of 10 ° to 20 ° forward toward back plane perpendicular vr1nta axis.
    ί
    SU, n , 1041027
    [2]
    2. A propeller according to Claim. Characterized in that the inner surface of the front edge of the annular nozzle is beveled at an angle of 15-45 °> with respect to the longitudinal axis of the nozzle.
    [3]
    3. Propeller according to paragraphs. 1 and 2, characterized in that the outer surface of the leading edge of the annular nozzle is beveled at an angle of 5-35 * with respect to the longitudinal axis of the nozzle.
    [4]
    4. Propeller according to paragraphs. 1, 2 and 3, characterized in that the ratio of the length of the annular nozzle to the length of the projection of the chord of the cross section of the blade on the longitudinal axis of the annular nozzle is in the range (1: 1) to (5: 1).
    [5]
    5. Propeller according to paragraphs. 1, 2, 3 and 4, characterized in that the number of blades is from two to twelve.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1041027A3|1983-09-07|Vessel propeller in annular nozzle
    US2011821A|1935-08-20|Propeller wheel
    RU2046054C1|1995-10-20|System of aft stabilizers of single-screw vessels
    AU605626B2|1991-01-17|A water vehicle with guiding fins
    US3938463A|1976-02-17|Inclined raked partially submerged propellers
    US2086307A|1937-07-06|Screw propeller and the like
    Kruger1949|On wind tunnel tests and computations concerning the problem of shrouded propellers
    GB1038471A|1966-08-10|Water craft
    GB1218363A|1971-01-06|A marine propulsion system
    JPH0659871B2|1994-08-10|Marine counter-rotating propeller
    GB1588123A|1981-04-15|Ships'rudders
    RU2042572C1|1995-08-27|Single-screw ship
    FI76531B|1988-07-29|RODER FOER FARTYG, SOM FAERDAS PAO ISBELAGDA HAVSOMRAODEN.
    RU94044419A|1997-02-20|Air-support vessel
    SU686609A3|1979-09-15|Gliding launch
    KR850002429A|1985-05-13|Marine propeller
    US3640071A|1972-02-08|Ducted propeller systems for marine vessels
    SE435364B|1984-09-24|The propeller blades of sea vessels
    US1775395A|1930-09-09|Guide apparatus for the propeller stream of vessels
    SU1461685A1|1989-02-28|Arrangement for steering vessel by propulsive elements
    KR830001089A|1983-04-29|Marine propeller
    SU592671A1|1978-02-15|Wave-type ship propeller
    SU1634560A1|1991-03-15|Aft extremity with counter of single-screw ship
    SU844475A1|1981-07-07|Propelling and steering set
    DK155826B|1989-05-22|Marine ring screw propeller
    同族专利:
    公开号 | 公开日
    IT7968739D0|1979-08-30|
    JPS5536194A|1980-03-13|
    AU524114B2|1982-09-02|
    GB2029515A|1980-03-19|
    DD145618A5|1980-12-24|
    ES251742U|1981-04-01|
    ES251742Y|1981-10-16|
    AU5043579A|1980-03-06|
    NL7906534A|1980-03-04|
    US4370096A|1983-01-25|
    CA1116959A|1982-01-26|
    IT1207941B|1989-06-01|
    SE443759B|1986-03-10|
    FR2434753B1|1986-08-08|
    FR2434753A1|1980-03-28|
    DE2934871A1|1980-03-13|
    SE7907172L|1980-03-01|
    GB2029515B|1982-10-06|
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    US3487805A|1966-12-22|1970-01-06|Satterthwaite James G|Peripheral journal propeller drive|
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    GB1299929A|1970-04-10|1972-12-13|Secr Defence|A bladed rotor for a gas turbine engine|
    GB1325395A|1971-11-16|1973-08-01|Townshend R C|Marine ring propellers|
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    US20070253807A1|2006-04-28|2007-11-01|Cooper Paul V|Gas-transfer foot|
    US20080064274A1|2006-09-11|2008-03-13|Brentnall Jesse Higgs|Boat propeller|
    US9643247B2|2007-06-21|2017-05-09|Molten Metal Equipment Innovations, Llc|Molten metal transfer and degassing system|
    US9156087B2|2007-06-21|2015-10-13|Molten Metal Equipment Innovations, Llc|Molten metal transfer system and rotor|
    US9205490B2|2007-06-21|2015-12-08|Molten Metal Equipment Innovations, Llc|Transfer well system and method for making same|
    US8613884B2|2007-06-21|2013-12-24|Paul V. Cooper|Launder transfer insert and system|
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    RU206479U1|2021-02-19|2021-09-13|Федеральное государственное бюджетное военное образовательное учреждение высшего образования "Черноморское высшее военно-морское ордена Красной Звезды училище имени П.С. Нахимова" Министерства обороны Российской Федерации|MULTI-VANE PROPELLER|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NZ18829878|1978-08-30|
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