KR920009838B1 - Arrangement on vessel with stationary water-guiding element - Google Patents

Arrangement on vessel with stationary water-guiding element Download PDF

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Publication number
KR920009838B1
KR920009838B1 KR1019890010726A KR890010726A KR920009838B1 KR 920009838 B1 KR920009838 B1 KR 920009838B1 KR 1019890010726 A KR1019890010726 A KR 1019890010726A KR 890010726 A KR890010726 A KR 890010726A KR 920009838 B1 KR920009838 B1 KR 920009838B1
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South Korea
Prior art keywords
propeller
ship
stern
plate
vessel
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KR1019890010726A
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Korean (ko)
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KR910002666A (en
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이귀주
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현대중공업 주식회사
박재면
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Priority to KR1019890010726A priority Critical patent/KR920009838B1/en
Priority to JP2187825A priority patent/JPH0361195A/en
Publication of KR910002666A publication Critical patent/KR910002666A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens

Abstract

An asymmetrical guide plate (2) is provided at the front end of a propulsion unit (1) of a ship. The length (a) of the plate is longer than 2 % of the ship length and shorter than 10 % of the ship length. The width (b) of the plate is within 25 % of the diameter of the propulsion unit, and the depth (c) of the plate is within 70 % of the propulsion diameter. The volume at the downward of rotation direction is three times that of the upward of rotation direction so that the upper part where speed is slow can be accelerated.

Description

비대칭 유도판을 이용한 선미류 유도장치Stern guide device using asymmetric guide plate

제1도는 본 발명의 비대칭 유도판을 부착한 선미도.1 is a stern attached to the asymmetric induction plate of the present invention.

제2도는 기존 선미도.2 is a conventional stern view.

제3도는 본 발명의 구조 설명도.3 is a structural diagram of the present invention.

제4도는 기존선의 터프트 그리드 실험도.4 is a tuft grid experiment of the existing line.

제5도는 본 발명의 터프트 그리드 실험도.5 is a tuft grid experimental diagram of the present invention.

본 발명은 선미의 추진기 상단 일면에 비대칭 유도판을 부착시켜 추진기에 유입되는 유속을 균일하게 유도함으로서 선박의 추진기에 의한 추진효율을 증가시킨 유도 장치에 관한 것이다.The present invention relates to an induction apparatus that increases the propulsion efficiency by the propeller of the ship by inducing a uniform flow rate flowing into the propeller by attaching an asymmetric induction plate on the top surface of the propeller of the stern.

선박의 추진기에 의한 추진효율(PROPULSION EFFICIENCY)을 증가시키기 위하여 추진기에 유입되는 유속을 균일케 유도하는 것을 특징으로 하는 장치로서 일반적인 선박의 선미도는 제2도와 같은데 이를 간략하면 프로펠러의 회전에 의해 선체중심면에서 프로펠라회전이 상향인 부분의 유속이 가속되어 그 반대쪽의 유속보다 빠르게 되므로 프로펠라에 작용하는 하중이 불균형이 되게 된다.In order to increase the propulsion efficiency (PROPULSION EFFICIENCY) by the ship's propeller, it is a device that induces the flow velocity flowing into the propeller uniformly. The stern diagram of the general ship is the same as the second figure. In the center plane, the velocity of the propeller rotation is accelerated and is faster than the flow velocity on the opposite side, so the load acting on the propeller becomes unbalanced.

이러한 현상을 최소화 하기 위한 최근에는 선박의 선미형상 자체를 비대칭으로 만들어서 가속되는 프로펠라 상향 회전방향의 유속을 감속시키고 감속되는 프로펠라 하향 회전 방향의 유속을 가속시키는 방법을 시도하고 있으나 이러한 것은 설계상 최적 형상을 찾는데 어려움이 있고 건조상에도 어려움이 따르게 된다.Recently, in order to minimize this phenomenon, a ship's stern shape itself has been made asymmetric to reduce the flow velocity of the propeller upward rotation accelerated and to accelerate the flow velocity of the propeller downward rotation accelerated. Difficult to find and it will be difficult to dry.

그러나 본 발명은 선미 추진기 상당 일측에 비대칭 유도판을 부착시켜 추진기에 유입되는 유속을 최대한 균일하게 유도한 것으로 발명의 요지를 첨부도면에 연계시켜 상세히 설명하면 다음과 같다. 선박 선미 추진기(1)의 전반부 상당 일측에 비대칭 유도판(2)를 부착한 장치를 이용하는 것인데 길이(a)가 배길이의 2% 보다 크고 10%보다 작으며 폭(b)은 배폭의 25%이내 그리고 길이(C)는 추진기 직경의 70% 이내인 비대칭형으로 선체 중심선에서 추진기 회전방향이 하향인 곳의 체적이 상향인 곳의 체적인 3배 이상으로 설정한 것이다.However, the present invention by attaching an asymmetric induction plate to one side of the stern propeller to guide the flow rate flowing into the propeller as uniformly as possible in detail in connection with the subject matter of the invention as follows. A device with an asymmetric guide plate (2) attached to one side of the first half of the ship's stern propeller (1), whose length (a) is greater than 2% of the ship length and less than 10% and the width (b) is 25% of the ship width. The length and length (C) are asymmetrical within 70% of the propeller diameter and are set to three times or more of the volume of the upward direction of the downward direction of propeller rotation from the hull centerline.

이와 같이 된 본 발명은 선박의 추진기가 회전을 할때 이 추진기의 회전으로 인하여 추진기의 전반부로부터 추진기 상향회전인 부분을 가속시켜 추진기에 유입되는 물의 흐름이 빨라져 좌우 비대칭이 되므로 추진기 전반부에 위치한 비대칭 유도판으로 인하여 이러한 현상을 최소화 하기 위하여 추진기 상부 근처의 속도가 느린 부분은 부분적으로 가속시키는 역할을 하게 된다.The present invention thus achieved is asymmetrical induction located in the first half of the propeller since the flow of water flowing into the thruster is accelerated by accelerating the portion of the propeller upward rotation from the first half of the thruster when the ship's thruster rotates. Due to the plate, to minimize this phenomenon, the slow part near the upper part of the thruster is partially accelerated.

그 결과 제4도와 같이 기존의 터프트 그리드(TUFT GRID)실험 결과와 제5도의 본 발명의 터프트 그리드 실험결과를 비교해 볼때 본 발명의 기존선형보다 추진기 우측 상단부분을 균일하게 만들 수 있는 것을 확인할 수 있는 것이다.As a result, when comparing the result of the existing tuft grid experiment with the tuft grid experiment of FIG. 5, as shown in FIG. 4, it can be seen that the upper right part of the propeller can be made more uniform than the existing linear of the present invention. It can be.

그러므로 본 발명은 기존 선형에 응용하여 현대선박 해양연구소(울산)의 예인수조에서 모형시험을 수행해 본 결과 아래 비교표와 같이 전달 마력(DELIVERED HORSE POWER)이 15노트에서 5.3% 감소한 효과가 있는 것이다.Therefore, according to the present invention, the model test was carried out in the towing tank of the Hyundai Marine & Marine Research Institute (Ulsan) by applying the existing linearity, and the transmission horsepower (DELIVERED HORSE POWER) was reduced by 5.3% at 15 knots as shown in the comparison table below.

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Figure kpo00005
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Figure kpo00006
Figure kpo00006

Figure kpo00007
Figure kpo00007

Figure kpo00008
Figure kpo00008

Claims (1)

선박 선미 추진기 전반부 상단 일측에 비대칭 유도판을 부착하여 균일치 못하게 유입되는 물의 흐름을 균일하게 유도하기 위하여 선박 선미 추진기(1)전반부 상단 일측에 비대칭 유도판(2)을 부착하되 길이(a)가 배길이의 2%보다 크고 10% 보다 작으며 폭(b)은 추진기 직경의 25% 이내 그리고 깊이(c)는 추진기 직경의 70% 이내인 비대칭형으로 선체 중심선에서 추진기 회전방향이 하향인 곳의 체적이 상향인 곳의 체적의 3배 이상으로 설정함으로서 추진 상부근처의 속도가 느린 부분을 부분적으로 가속시킴을 특징으로 하는“비대칭 유도판을 이용한 선미류 유도장치”.In order to uniformly induce the flow of water flowing in unevenly by attaching an asymmetric induction plate on one side of the upper part of the ship's stern propeller, the asymmetric induction plate (2) is attached on the one side of the upper part of the ship stern propeller (1) Larger than 2% of ship length and less than 10%, width (b) is within 25% of propeller diameter and depth (c) is asymmetrical within 70% of propeller diameter. "Stern flow guide device using asymmetric induction plate" characterized by partially accelerating the slow part near the propulsion upper part by setting more than three times the volume where the volume is upward.
KR1019890010726A 1989-07-28 1989-07-28 Arrangement on vessel with stationary water-guiding element KR920009838B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019890010726A KR920009838B1 (en) 1989-07-28 1989-07-28 Arrangement on vessel with stationary water-guiding element
JP2187825A JPH0361195A (en) 1989-07-28 1990-07-16 Method and device for inducing stern flow employing asymmetrical inducing board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890010726A KR920009838B1 (en) 1989-07-28 1989-07-28 Arrangement on vessel with stationary water-guiding element

Publications (2)

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KR920009838B1 true KR920009838B1 (en) 1992-10-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016140398A1 (en) * 2015-03-04 2016-09-09 한국해양과학기술원 Asymmetric wake generating vortex generator for reducing propeller noise and vibration

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100848920B1 (en) * 2008-01-24 2008-07-29 이제균 Seat for use with closestool
KR101531395B1 (en) * 2013-11-22 2015-06-24 삼성중공업 주식회사 Apparatus for Improving Energy Efficiency

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JPS5950889A (en) * 1982-09-17 1984-03-24 Sanoyasu:Kk Stern fin to control stern eddy
EP0147968A3 (en) * 1983-12-23 1986-09-17 General Motors Corporation Temperature compensated magnetic bubble memory
JPH05461Y2 (en) * 1985-06-25 1993-01-07
JPH0788197B2 (en) * 1987-09-30 1995-09-27 三菱重工業株式会社 Stern shape

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016140398A1 (en) * 2015-03-04 2016-09-09 한국해양과학기술원 Asymmetric wake generating vortex generator for reducing propeller noise and vibration
CN106163916A (en) * 2015-03-04 2016-11-23 韩国海洋科学技术院 Produce the vortex generator for reducing propeller noise and the asymmetric wake of vibration

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KR910002666A (en) 1991-02-26

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