CN110683012B

CN110683012B - A detachable fin

Info

Publication number: CN110683012B
Application number: CN201910948408.4A
Authority: CN
Inventors: 韩阳; 王于; 郭春雨; 王超; 徐菁菁; 林健峰; 钟若凡; 赵旺
Original assignee: Harbin Engineering University
Current assignee: Harbin Engineering University
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-07-16
Anticipated expiration: 2039-09-29
Also published as: CN110683012A

Abstract

The invention belongs to the technical field of ship navigation, and particularly relates to a separated fin stabilizer which comprises a fin stabilizer rear part, an upper fin surface baffle, a lower fin surface baffle, a connecting plate, a fin stabilizer front part, a fin shaft and a trapezoidal tail part, and is characterized in that: the fin shaft is fixed to the one end of fin front portion, and fin front portion is together fixed through connecting plate and fin rear portion, and the one end that the connecting plate was kept away from to fin rear portion is fixed with trapezoidal afterbody, and the one end that the fin shaft was kept away from to the last fin face that upper surface at fin rear portion and the anterior upper surface of fin constitute at fin rear portion is fixed with upper fin face baffle, and the one end that the fin shaft was kept away from to the lower fin face that the lower surface at fin rear portion and the anterior lower surface of fin constitute is fixed with lower fin face baffle. The fin stabilizer designed by the invention has a certain gap between the front part of the fin stabilizer and the middle part of the rear part of the fin stabilizer, and can play a role in shunting, reduce the wing tip vortex speed, reduce the resistance, improve the lift-drag ratio and improve the stabilizing effect.

Description

Disconnect-type stabilizer

Technical Field

The invention belongs to the technical field of ship navigation, and particularly relates to a separated fin stabilizer.

Background

The boats and ships roll can seriously influence the security of boats and ships navigation and the travelling comfort of crew's work, and in order to reduce the influence that boats and ships roll brought, boats and ships stabilizer becomes for indispensable part in the ship design, has now developed nearly hundred kinds of stabilizers, but can the wide use be stabilizer, stabilizer cabin, bilge fossil fragments, wherein stabilizer fin stabilization effect is best. In 1985, the british "mary queen" ship performed fin stabilizer performance tests under heavy wind and wave conditions. When the fin is working, the roll angle of the ship is about 2 degrees on average, and when the fin is not working, the roll angle is 25 degrees. At present, the fin stabilizer has the best stabilizing effect of over 90 percent, is a stabilizing device which is suitable for all ship types and can effectively provide lift force, and can generate the lift force because the flow velocity of water flow on the upper fin surface and the lower fin surface is different, and the two fin surfaces can generate pressure difference so as to generate the lift force. However, the water flow at the free end of the fin will flow from the high pressure side to the low pressure side, and the water flow will be twisted to form a tip vortex near the fin tip due to backward flow and upward streaming. The lift force of the fin stabilizer is reduced, the resistance is increased, the higher the eddy speed is, the liquid is cavitated to cause the noise and the erosion of the fin surface, and the stabilizing effect and the sailing safety are influenced. The fin stabilizer is designed to be separated from the front and the back and a certain gap is reserved, so that the fin stabilizer can play a role in shunting, reduce the wing tip vortex speed, effectively reduce resistance and improve the stabilizing effect. The lift force generated by the separated stabilizer fin is larger than that generated by a common stabilizer fin, and the safety of the ship can be improved and the oil consumption can be reduced. Therefore, research on the split fin is necessary.

Disclosure of Invention

In order to solve a series of problems, the invention provides a separated fin stabilizer for reducing rolling of a ship.

The utility model provides a disconnect-type stabilizer, by stabilizer rear portion 1, go up fin face baffle 2, fin face baffle 3, connecting plate 4, stabilizer front portion 5, fin axle 6, trapezoidal afterbody 7 constitute, its characterized in that down: a fin shaft 6 is fixed at one end of the front part 5 of the fin stabilizer, the front part 5 of the fin stabilizer is fixed with the rear part 1 of the fin stabilizer through a connecting plate 4, a trapezoidal tail 7 is fixed at one end of the rear part 1 of the fin stabilizer, which is far away from the connecting plate 4, an upper fin surface baffle 2 is fixed at one end of the fin shaft 6, which is far away from an upper fin surface formed by the upper surface of the rear part 1 of the fin stabilizer and the upper surface of the front part 5 of the fin stabilizer, and a lower fin surface baffle 3 is fixed at one end of the lower fin surface formed by the lower surface of the rear part 1 of the fin stabilizer and the lower surface of the front part 5.

There is a gap between the fin front 5 and the fin rear 1.

The upper fin surface baffle 2 and the lower fin surface baffle 3 are processed and provided with tips and sweepbacks.

The invention has the beneficial effects that:

(1) the fin stabilizer designed by the invention has a certain gap between the front part of the fin stabilizer and the middle part of the rear part of the fin stabilizer, and can play a role in shunting, reduce the wing tip vortex speed, reduce the resistance, improve the lift-drag ratio and improve the stabilizing effect.

(2) The upper fin surface baffle and the lower fin surface baffle of the fin stabilizer designed by the invention are processed and have tip and sweepback, so that the resistance can be effectively reduced.

(3) The fin stabilizer designed by the invention has the advantages of low manufacturing cost, convenient maintenance and high reliability, and can be suitable for stabilizing any ship type.

Drawings

FIG. 1: the structure schematic diagram of the separated fin stabilizer;

FIG. 2: a top view of a split fin stabilizer;

FIG. 3: a left view of the split fin stabilizer;

FIG. 4: cross-sectional view of a split fin stabilizer.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

In the figure: 1-stabilizer fin rear part, 2-upper fin surface baffle, 3-lower fin surface baffle, 4-connecting plate, 5-stabilizer fin front part, 6-fin axis, 7-trapezoidal tail.

The invention discloses a separated fin stabilizer which comprises a fin shaft 6, a fin stabilizer front part 5, a fin stabilizer rear part 1, an upper fin surface baffle 2, a lower fin surface baffle 3, a connecting plate 4 and a trapezoidal tail part 7. The fin front part 5 with a fin shaft 6 at one end is connected with the fin rear part 4 through a connecting plate 4, the fin shaft 6 is connected on the ship body, the upper fin surface baffle 2 is arranged on the upper fin surface of the free end of the fin, and the lower fin surface baffle is arranged on the lower fin surface. The invention provides a separated fin stabilizer, wherein a certain gap is formed between the front part 5 of the fin stabilizer and the rear part 1 of the fin stabilizer, so that the effect of shunting can be achieved, the wing tip eddy speed is reduced, the resistance is reduced, the lift-drag ratio is improved, and the stabilizing effect can be improved.

The fin front part 5 and the fin rear part 1 and the connecting plate 4 are designed according to the actual operating conditions.

The upper fin surface baffle 2 and the lower fin surface baffle 3 are processed and have tip points and sweepback, so that the resistance can be effectively reduced.

Claims

1. A separate fin stabilizer, consisting of a rear part of the fin (1), an upper fin surface baffle (2), a lower fin surface baffle (3), a connecting plate (4), and a front part of the fin ( 5), a fin shaft (6) and a trapezoidal tail (7), characterized in that: one end of the front part (5) of the fin is fixed with a fin shaft (6), and the front part (5) of the fin passes through the connecting plate ( 4) It is fixed with the rear part of the fin (1), the end of the rear part of the fin (1) away from the connecting plate (4) is fixed with a trapezoidal tail (7), and the upper surface of the rear part of the fin (1) An upper fin surface baffle plate (2) is fixed at one end of the upper fin surface formed with the upper surface of the front part of the fin (5) away from the fin shaft (6). A lower fin surface baffle plate (3) is fixed at one end of the lower fin surface formed by the lower surface of the front part of the fin (5) away from the fin shaft (6); the front part (5) of the fin and the rear part of the fin ( 1) There is a gap between; the upper fin surface baffle (2) and the lower fin surface baffle (3) are both processed and have tips and swept back.