JPS58156489A - Stern flow straightening fin - Google Patents
Stern flow straightening finInfo
- Publication number
- JPS58156489A JPS58156489A JP3680682A JP3680682A JPS58156489A JP S58156489 A JPS58156489 A JP S58156489A JP 3680682 A JP3680682 A JP 3680682A JP 3680682 A JP3680682 A JP 3680682A JP S58156489 A JPS58156489 A JP S58156489A
- Authority
- JP
- Japan
- Prior art keywords
- fin
- stern
- propeller
- ship
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は船尾渡場の流れの整流を行う装置に関する。一
般に船舶は満載状態で航行するのみならず、軽荷状態で
も航行する。載貨状態の変化に伴って、船尾渡場はかな
シ変化する。このため第１図および第２図に示すように
船尾部２に装着されだ固設フィンｌは、たとえば満載状
態では船尾の流れを有効に整流しプロペラ起振力を軽減
させることが出来ても、軽荷状態では船尾の流れを乱し
逆効果となる場合もあった（第１図は船尾部の側面図、
第２図は第１図の制−Ｉ矢視断面図であり、８はプロペ
ラ、４は舵。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for rectifying the flow in a stern ferry. In general, ships not only sail with a full load, but also sail with a light load. The stern wharf changes momentarily as the loading conditions change. For this reason, as shown in Figures 1 and 2, the fixed fins l attached to the stern section 2 can, for example, effectively rectify the flow at the stern and reduce the propeller excitation force in a fully loaded state. , when the load was light, the flow at the stern could be disturbed and have the opposite effect (Figure 1 is a side view of the stern,
FIG. 2 is a sectional view taken along the arrow I in FIG. 1, where 8 is a propeller and 4 is a rudder.
債 ５は水面、６は船体外板、１０プロペラ軸を示す）。bond 5 indicates the water surface, 6 indicates the hull shell, and 10 indicates the propeller shaft).
こうした欠点を解消するため載荷状態の変化に伴って生
じる渡場の変化に対応して、フィンの前後方向の傾斜を
変えうるようにした船尾整流フイ／が提案されている。In order to overcome these drawbacks, a stern rectifier fin has been proposed in which the inclination of the fin in the longitudinal direction can be changed in response to changes in the wharf caused by changes in loading conditions.
それらを第８図乃至第６図に示す。These are shown in FIGS. 8 to 6.
第８図は船尾部の側面図、第４図は第８図のＮ−ＩＶ矢
視断面図である。フィンｌａはヒフシフまわりに回転す
ることによりフィン１ａの前後方向の傾斜を変えるもの
である。即ち、フィン１ａはフィン１ａ中夫のヒンジ７
によって船尾部２に取シ付けられ、フィン１ａの後端は
ヒンジ８によ如上下に動く支持棒９に連結される。8 is a side view of the stern section, and FIG. 4 is a sectional view taken along the line N-IV in FIG. 8. The fin la changes the inclination of the fin 1a in the front-rear direction by rotating around the fin 1a. That is, the fin 1a is connected to the hinge 7 of the fin 1a.
The rear end of the fin 1a is connected by a hinge 8 to a support rod 9 that moves up and down.
この支持棒９を上下させることにより、フィン１ａの傾
斜を変化させることが可能である。１７かし、このよう
な可動フィンｌａは船尾の複緒な曲面上で船体外板９の
表面とフィン１ｍとの間に間隙をつくることなく動ける
ことが必要であるため、あまりフィン１ｇの長さを長く
することはできないという欠点があった。このようなフ
ィンｌａの長さに対する制約を取り除いたものを第５図
および第６図に示す。フィンは２つに分割され、それぞ
れのフィンＩｂ、ｌｃの傾斜が変化するものである。By moving this support rod 9 up and down, it is possible to change the inclination of the fins 1a. 17 However, since such a movable fin la needs to be able to move on the complex curved surface of the stern without creating a gap between the surface of the hull outer plate 9 and the fin 1m, the length of the fin 1g is too long. The drawback was that the length could not be increased. FIGS. 5 and 6 show a structure in which such restrictions on the length of the fins la are removed. The fin is divided into two parts, and the slope of each fin Ib and lc changes.
第５図は船胤部の側面図であり、第６図は第５図のＩＶ
−［Ｖ矢視断面図である。それぞれのフィンｌｂ、ｌｃ
は各々の中央部で船体外板６に突出した回転軸１１に支
持され、該回転軸１１まわりに回転できる。フィンｌｂ
、ｌｃの両端は取付角設定用の摺動装置ｔｔａに連結さ
れている。各々のフィンｌｂ、ｌｃは摺動装置１１ａを
上下動させることにより、それぞれの傾斜を変更するよ
うになっている。しかしながら。Figure 5 is a side view of the boat's seed part, and Figure 6 is the IV of Figure 5.
- [V is a sectional view taken along the arrow. Each fin lb, lc
are supported by a rotating shaft 11 protruding from the hull outer plate 6 at the center of each, and can rotate around the rotating shaft 11. fin lb
, lc are connected to a sliding device tta for setting the mounting angle. The inclination of each fin lb, lc is changed by moving the sliding device 11a up and down. however.
フィンｌｂ、ｌｃの傾斜を変えた場合フィ／ｌｂの前端
部とフィンｌｃの後端部の間隙（段差）が増大し、フィ
：／ｌｂ、ｌｃの近傍の流れがスムースに流れ去らなく
なるという欠点があった。If the inclinations of the fins lb and lc are changed, the gap (step) between the front end of the fin lb and the rear end of the fin lc will increase, and the flow near the fins lb and lc will not flow away smoothly. was there.
本発明は上記事情に鑑みなされたもので、いずれの載荷
状態においても船尾の流れを有効に整流できるよう計っ
た船尾整流フィンを提供することを目的とする。The present invention was made in view of the above circumstances, and an object of the present invention is to provide a stern rectifying fin designed to effectively rectify the flow at the stern in any loading state.
このため本発明の船尾整流フィンは、船尾部のプロペラ
上方から、その前方にわたって船体側壁に設けられ、プ
ロペラに流入する流れを均１４る船尾整流フィンにおい
て７上記船尾整流フィンを船長方向に分割すると共に、
該分割された各フィンをヒンジを介して船体に上下方向
に回動自在に取付けたことを特徴としている。For this reason, the stern rectifier fin of the present invention is provided on the side wall of the ship from above the propeller at the stern section to in front of the propeller, and divides the stern rectifier fin 7 in the ship's direction in the stern rectifier fin that equalizes the flow flowing into the propeller. With,
It is characterized in that each of the divided fins is attached to the hull via a hinge so as to be freely rotatable in the vertical direction.
以下１図面によって本発明の一実施例について説明する
と、第７図は船尾整流フィン（以下本フィンという）を
装着した船舶・の船尾部側面り
図、第８図は第７図■−Ｖ■矢視断面図、第９図は第７
図のＩＸ−ＩＸ矢視断面図である。図中第１〜６図と同
じものには同一符号を付した。An embodiment of the present invention will be described below with reference to the drawings. Fig. 7 is a side view of the stern section of a ship equipped with a stern rectifying fin (hereinafter referred to as the main fin), and Fig. 8 is a side view of the stern section of a ship equipped with a stern rectifying fin (hereinafter referred to as the main fin). Arrow sectional view, Figure 9 is the 7th
It is a sectional view taken along the line IX-IX in the figure. Components in the figure that are the same as those in FIGS. 1 to 6 are given the same reference numerals.
本フィンＡは複数個のフィンから構成され。This fin A is composed of a plurality of fins.
各フィン１２．１８，１４．１５は各々両端がヒンジ１
６．’１７によって船体の一部１８に支持され、これら
のヒンジｔａ、ｔ？ｔわりに回転できるようになってい
ると共に各フィン１２〜１６の中央はヒンジ１９を介し
て油圧シリンダー２０に連結されている。従ってこのシ
リンダー２０が伸縮することによって各フィン１２〜１
５はヒンジ１６，１７まわりに回転し、該フィン１２〜
１５と船体外板６とのなす角α（第９図）を変えること
ができるようになっている。Each fin 12.18, 14.15 is hinged at both ends.
6. '17 is supported on part 18 of the hull by these hinges ta, t? The center of each fin 12 to 16 is connected to a hydraulic cylinder 20 via a hinge 19. Therefore, as this cylinder 20 expands and contracts, each fin 12 to 1
5 rotates around hinges 16 and 17, and the fins 12 to 5 rotate around hinges 16 and 17.
15 and the hull outer plate 6 (FIG. 9) can be changed.
次にその作用について説明する。Next, its effect will be explained.
たとえば満載状態でフィンを全く付けないときにプロペ
ラ３に流入する流れは第１０図の点線で示される。ここ
で縦軸のＷｘは伴流係数でＷｘ＝ １− Ｖｘ／ Ｖ
（Ｖｘ：プロペラ軸１０方向の流速。For example, the flow flowing into the propeller 3 when the propeller is fully loaded and no fins are attached is shown by the dotted line in FIG. Here, Wx on the vertical axis is the wake coefficient, Wx=1-Vx/V
(Vx: Flow velocity in the direction of the propeller shaft 10.
Ｖ：船速）、θはプロペラ軸ｌＯまわりの回転角でプロ
ペラ直上を００にとっている。またｒ７Ｒ（ｒ：プロペ
ラ軸を中心とした半径、Ｒ：プロペラ半径）が１．１の
円周方向の伴流分布を代表として示している。V: ship speed), θ is the rotation angle around the propeller axis lO, and 00 is taken directly above the propeller. Further, the wake distribution in the circumferential direction where r7R (r: radius around the propeller axis, R: propeller radius) is 1.1 is shown as a representative.
これに対し、第７図の如く本フィンＡを装着すると伴流
分布は実線１゛示すように変化し、θ−Ｑｏ付近の流れ
は増大し伴流係数が減少する。On the other hand, when the present fin A is attached as shown in FIG. 7, the wake distribution changes as shown by the solid line 1', the flow near θ-Qo increases and the wake coefficient decreases.
したがってθ方向の伴流係数ＷＸの変化がゆるやかとな
り、プロペラ起振力が軽減する。Therefore, the wake coefficient WX in the θ direction changes gradually, and the propeller excitation force is reduced.
一方軽荷状態で航行する場合、フィンを全く付けないと
きの伴流分布が第１１図の点線で示される。これに対し
て第７図の如く本フイ／Ａを装着したときの伴流分布は
実線で示したようになり、θ＝０°での伴流係数Ｗｘは
減少するが。On the other hand, when sailing with a light load, the wake distribution when no fins are attached is shown by the dotted line in FIG. On the other hand, when the present fin/A is installed as shown in FIG. 7, the wake distribution becomes as shown by the solid line, and the wake coefficient Wx at θ=0° decreases.
θ−８００付近でのＷｘは増大している。このだめ全体
的には伴流分布は必ずしも均一化していない。Wx near θ-800 is increasing. Overall, the wake distribution is not necessarily uniform.
そこで本フィンＡを第１２図および第１３図に実線で示
す状態、即ち角度ａを大きくすると。Therefore, if the present fin A is in the state shown by the solid line in FIGS. 12 and 13, that is, the angle a is increased.
伴流分布は第１１図の点線から一点鎖線に変化え
し、θ−００〜８０°付近の流庵が増大し、θ方向の伴
流係数Ｗｘの変化はゆるやかになり、プロペラ起振力を
軽減させることができる。なお、第１２図および第１３
図において点線は第７〜９図の本フィンＡの位置を示す
。また、第１８図↓
は第１２図ＸＩ−ＸＩ矢視断面図である。The wake distribution changes from the dotted line in Fig. 11 to the dashed-dotted line, the flow hermitage near θ-00 to 80° increases, and the change in the wake coefficient Wx in the θ direction becomes gradual, increasing the propeller excitation force. It can be reduced. In addition, Figures 12 and 13
In the figures, dotted lines indicate the position of the main fin A in FIGS. 7-9. Moreover, FIG. 18↓ is a sectional view taken along arrows XI-XI in FIG. 12.
以上述べたように本発明の船尾整流フィンによれば、載
荷状態の変化に伴なって生じる船尾の流れに対応してフ
ィンの取付姿勢を調整することにより、各載荷状態に最
適の整流を行うことが可能となり、プロペラ起振力を軽
減させることが出来るという利点がある。As described above, according to the stern rectifying fin of the present invention, by adjusting the mounting posture of the fin in response to the stern flow that occurs as the loading condition changes, the optimum rectification for each loading condition is achieved. This has the advantage that the propeller excitation force can be reduced.
第１〜６図は従来の船尾整流フィンを装着した船舶の船
尾部を示すもので、第１図は側面図。
第２図は第１図の扉−曹矢視断面図、第８図は第１図に
対応する側面図、第４図は第８図の■−ＩＶ矢視断面図
、第５図は第１図に対応する側面図、第６図は第５図の
Ｖｌ−Ｖｌ矢視断面図、第７〜９図は本発明の一実施例
としての船尾整流フィンを装着した船舶の船尾部を示す
もので。
第７図はその側面図、第８図は第７図の■−糧矢視断面
図、第９図は第７図のＩＸ−ＩＸ矢視断面図、第１Ｏ〜
１１図は本実施例の効果を示すグラフ、第１２図は第７
図に対応する側面図、第１８図は第１２図のＸ■−ＸＩ
矢視断面図である。
２・・・船尾部、８・・・プロペラ、４・・・舵、５・
・水面、６・・・船体外板、１０・・・プロペラ軸、１
２〜１５・・・フィン、１６，１７．１９・・・ヒンジ
。
２０・・・油圧シリンダー、Ａ・・・船尾整流フィン。
矛１ 閲
第３因
オ＋ＯＷ
才１１目
θ（ｄｅｙｌ
７１２関
才１３７1 to 6 show the stern of a ship equipped with conventional stern rectifying fins, and FIG. 1 is a side view. Fig. 2 is a sectional view of the door in Fig. 1 taken from the Soya arrow, Fig. 8 is a side view corresponding to Fig. 1, Fig. 4 is a sectional view taken from the ■-IV arrow of Fig. 8, and Fig. 5 is a sectional view taken from the 1 is a side view corresponding to FIG. 1, FIG. 6 is a sectional view taken along the line Vl-Vl in FIG. Something. Fig. 7 is a side view thereof, Fig. 8 is a cross-sectional view taken along the line II-II arrow in Fig. 7, Fig. 9 is a cross-sectional view taken along the IX-IX arrow in Fig. 7, and No. 1O~
Figure 11 is a graph showing the effects of this example, and Figure 12 is a graph showing the effects of this example.
The side view corresponding to the figure, Figure 18 is X-XI of Figure 12.
It is an arrow sectional view. 2... Stern section, 8... Propeller, 4... Rudder, 5...
・Water surface, 6... Hull outer plate, 10... Propeller shaft, 1
2-15...Fin, 16,17.19...Hinge. 20...Hydraulic cylinder, A...Stern rectifying fin. spear 1
Claims (1)
に設けられ、プロペラに流入する。流れを均一化する船
尾整流フィンにおいて、上記船尾整流フィンを船長方向
に分割すると共に。 該分割された各フィンをヒンジを介して船体に上下方向
に回動自在に取付けたことを特徴とする船尾整流フィン
。[Claims] It is provided on the side wall of the ship from above the propeller at the stern section to the front thereof, and flows into the propeller. In the stern rectifying fin that equalizes the flow, the stern rectifying fin is divided in the ship's direction. A stern rectifying fin characterized in that each of the divided fins is attached to a hull via a hinge so as to be freely rotatable in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3680682A JPS58156489A (en) | 1982-03-09 | 1982-03-09 | Stern flow straightening fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3680682A JPS58156489A (en) | 1982-03-09 | 1982-03-09 | Stern flow straightening fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58156489A true JPS58156489A (en) | 1983-09-17 |
Family
ID=12480021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3680682A Pending JPS58156489A (en) | 1982-03-09 | 1982-03-09 | Stern flow straightening fin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58156489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62149495U (en) * | 1986-03-14 | 1987-09-21 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543797A (en) * | 1977-06-08 | 1979-01-12 | Mitsui Eng & Shipbuild Co Ltd | Ship |
-
1982
- 1982-03-09 JP JP3680682A patent/JPS58156489A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543797A (en) * | 1977-06-08 | 1979-01-12 | Mitsui Eng & Shipbuild Co Ltd | Ship |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62149495U (en) * | 1986-03-14 | 1987-09-21 | ||
| JPH0441032Y2 (en) * | 1986-03-14 | 1992-09-25 |
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