JPS6319275Y2 - - Google Patents
Info
- Publication number
- JPS6319275Y2 JPS6319275Y2 JP1983061721U JP6172183U JPS6319275Y2 JP S6319275 Y2 JPS6319275 Y2 JP S6319275Y2 JP 1983061721 U JP1983061721 U JP 1983061721U JP 6172183 U JP6172183 U JP 6172183U JP S6319275 Y2 JPS6319275 Y2 JP S6319275Y2
- Authority
- JP
- Japan
- Prior art keywords
- bilge
- ship
- water
- hull
- view
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は、船体の抵抗を減少させるための装置
に関し、特に船体前肩部および船体後肩部の各ビ
ルジ部に生じる渦流を減少させることによつて造
渦抵抗の減少をはかれるようにした、船舶の抵抗
減少装置に関する。[Detailed description of the invention] The present invention relates to a device for reducing the resistance of a ship's hull, and in particular, reduces the vortex-forming resistance by reducing the vortices generated in each bilge section of the front shoulder and rear shoulder of the ship. This invention relates to a ship's drag reduction device designed to reduce drag.
従来の船舶は、第１図（側面図）および第２図
（平面図）に示すように、船体１の後端部に舵２
やプロペラ３をそなえられており、船舶の航走時
において、船体１の前半部では、第３図（第２図
の−矢視断面図）に示すように、ビルジ部７
のまわりで、水の流れが船側５から船底６に向か
つて後方へ流れてゆく渦流９を発生するようにな
る。 A conventional ship has a rudder 2 at the rear end of the hull 1, as shown in FIG. 1 (side view) and FIG. 2 (plan view).
When the ship is sailing, the front half of the hull 1 is equipped with a bilge part 7, as shown in FIG.
Around the ship, a vortex 9 is generated in which the water flows from the ship's side 5 toward the ship's bottom 6 and backwards.
一方、船体１の後半部では、第４図（第２図の
−矢視断面図）に示すように、ビルジ部８の
まわりで、水の流れが船底６より船側５に向かつ
て後方へ流れてゆく渦流１０を発生するようにな
る。 On the other hand, in the rear half of the hull 1, as shown in FIG. 4 (a sectional view taken along the - arrow in FIG. 2), water flows from the bottom 6 toward the ship side 5 and backwards around the bilge section 8. This generates a swirling vortex 10.
したがつて、船舶の航行時には、ビルジ部７，
８より発生する渦流９，１０により、造渦抵抗が
増加するようになり、推進性能の低下を招くとい
う問題点がある。 Therefore, when the ship is sailing, the bilge section 7,
There is a problem in that the vortex formation resistance increases due to the vortices 9 and 10 generated from the vortices 8, resulting in a decrease in propulsion performance.
本考案は、このような問題点の解決をはかろう
とするもので、船体前半部のビルジ部から水を吸
込み、船体後半部のビルジ部からは水を噴出させ
ることにより、両ビルジ部における渦流の発生を
防止して、造渦抵抗の減少をはかれるようにし
た、船舶の抵抗減少装置を提供することを目的と
する。 The present invention is intended to solve these problems by providing a resistance reduction device for a ship which draws in water from the bilge section in the front half of the hull and ejects it from the bilge section in the rear half of the hull, thereby preventing the generation of vortexes in both bilge sections and reducing vortex-generating resistance.
このため本考案の船舶の抵抗減少装置は、船体
前肩部のビルジ部に水吸入口をそなえるととも
に、船体後肩部のビルジ部に、ビルジ部外板に沿
つて水を放出しうる水放出口をそなえ、これらの
水吸入口と水放出口とを接続する配管が船内に設
けられて、同配管にポンプが介装されたことを特
徴としている。 Therefore, the ship drag reduction device of the present invention has a water inlet in the bilge part of the front shoulder of the hull, and a water outlet in the bilge part of the rear shoulder part of the hull that can discharge water along the outer skin of the bilge part. It is characterized by having an outlet, piping connecting these water inlets and water outlets inside the ship, and a pump interposed in the piping.
以下、図面により本考案の一実施例としての船
舶の抵抗減少装置について説明すると、第５図は
その側面図、第６図はその平面図、第７図は第６
図の−矢視断面図、第８図は第７図の部を
拡大して示す断面図、第９図は第６図の−矢
視断面図、第１０図は第９図のＸ部を拡大して示
す断面図であり、第５〜１０図中、第１〜４図と
同じ符号はほぼ同様の部分を示している。 Hereinafter, a drag reduction device for a ship as an embodiment of the present invention will be explained with reference to the drawings. FIG. 5 is a side view thereof, FIG. 6 is a plan view thereof, and FIG.
8 is an enlarged cross-sectional view of the part shown in FIG. 7, FIG. 9 is a sectional view taken along the - arrow of FIG. It is an enlarged sectional view, and in FIGS. 5 to 10, the same reference numerals as in FIGS. 1 to 4 indicate substantially the same parts.
第５〜１０図に示すように、船体１の前肩部に
おけるビルジ部７に、水吸入口１１が形成され、
船体１の後肩部におけるビルジ部８には、水放出
口１５が形成されており、これらの水吸入口１１
と水放出口１５とを接続する配管として、吸入管
１２と放出管１４とが船内に設けられている。 As shown in FIGS. 5 to 10, a water inlet 11 is formed in the bilge part 7 in the front shoulder part of the hull 1,
A water outlet 15 is formed in the bilge part 8 at the rear shoulder of the hull 1, and these water inlets 11
A suction pipe 12 and a discharge pipe 14 are provided inside the ship as pipes connecting the water discharge port 15 and the water discharge port 15 .
水吸入口１１は吸入管１２の前端部から上向き
に形成されて、円弧状に弯曲したビルジ部７に開
口しており、一方、水放出口１５は、ビルジ部外
板に沿つて水を放出しうるように、放出管１４の
後端部から上向きに形成されて、円弧状に弯曲し
たビルジ部８に開口している。 The water inlet 11 is formed upward from the front end of the inlet pipe 12 and opens into the bilge part 7 which is curved in an arc shape, while the water outlet 15 discharges water along the outer panel of the bilge part. The discharge pipe 14 is formed upward from the rear end thereof and opens into a bilge part 8 which is curved in an arc shape.
そして、吸入管１２と放出管１４との間にポン
プ１３が介装されており、このポンプ１３の吸入
側には、水吸入口１１から延在する吸入管１２が
連結され、ポンプ１３の吐出側には放出管１４が
連結されていて、放出管１４の後端部は水放出口
１５に接続されている。 A pump 13 is interposed between the suction pipe 12 and the discharge pipe 14, and the suction pipe 12 extending from the water suction port 11 is connected to the suction side of the pump 13. A discharge pipe 14 is connected to the side, and the rear end of the discharge pipe 14 is connected to a water discharge port 15.
また、ポンプ１３を作動させるための駆動機構
が、船体内に設けられている。なお、第５図中の
符号２は舵、３はプロペラを示し、第７〜１０図
中の符号５は船側、６は船底、１６，１７は流線
を示している。 Further, a drive mechanism for operating the pump 13 is provided within the hull. In addition, the code|symbol 2 in FIG. 5 shows a rudder, 3 shows a propeller, the code|symbol 5 in FIGS. 7-10 shows a ship side, 6 shows a bottom, and 16 and 17 show a streamline.
本考案の船舶の抵抗減少装置は上述のごとく構
成されているので、その航走時において、ポンプ
１３を作動させると、船体１の前半部のビルジ部
７付近の水は水吸入口１１より吸入されることに
より、ビルジ部７のまわりで後方に流れて行く水
の流れが、速く流れるようになつて、渦流の発生
を防止され、第７図における流線１６で示すよう
な流れとなる。 Since the ship drag reduction device of the present invention is constructed as described above, when the pump 13 is activated during navigation, water near the bilge section 7 in the front half of the ship body 1 is sucked in through the water intake port 11. As a result, the flow of water flowing backward around the bilge portion 7 becomes faster, preventing the generation of vortices, and resulting in a flow as shown by streamlines 16 in FIG. 7.
そして、水吸入口１１より吸入された水は、吸
入管１２を通り、ポンプ１３から放出管１４を通
つて、水放出口１５よりビルジ部外板に沿つて噴
出されるので、船体後半部のビルジ部７のまわり
で後方に流れていく水の流れは、加速されるよう
になつて、渦流の発生を防止され、第９図におけ
る流線１７で示すような流れとなる。 The water sucked in from the water intake port 11 passes through the suction pipe 12, passes from the pump 13 through the discharge pipe 14, and is ejected from the water discharge port 15 along the outer plate of the bilge, so that the water is The flow of water flowing rearward around the bilge portion 7 is accelerated and the generation of eddies is prevented, resulting in a flow as shown by the streamline 17 in FIG. 9.
このように、船体前半部のビルジ部７および船
体後半部のビルジ部８には、従来のような渦流を
生じることがなくなるので、船体の造渦抵抗が大
幅に減少し、推進性能の大幅な向上がもたらされ
るのである。 In this way, the bilge section 7 in the front half of the hull and the bilge section 8 in the rear half of the hull no longer generate vortices as in the past, so the vortex-forming resistance of the hull is significantly reduced, and the propulsion performance is significantly improved. Improvement will result.
以上詳述したように本考案の船舶の抵抗減少装
置によれば、船体前肩部のビルジ部に水吸入口を
そなえるとともに、船体後肩部のビルジ部にビル
ジ部外板に沿つて水を放出しうる水放出口をそな
え、これらの水吸入口と水放出口とを接続する配
管が船内に設けられて、同配管にポンプが介装さ
れているという簡素な構造で、従来問題とされて
いたビルジ部における渦流の発生による造渦抵抗
がほとんどなくなり、推進性能の向上や燃料消費
の改善に寄与しうるのである。 As detailed above, according to the ship drag reduction device of the present invention, a water inlet is provided in the bilge part of the front shoulder of the hull, and water is injected into the bilge part of the rear shoulder part of the hull along the outer plate of the bilge part. It has a simple structure in which the ship is equipped with a water outlet that can be discharged, piping is installed inside the ship to connect these water inlets and the water outlet, and a pump is installed in the same piping. The vortex-forming resistance caused by the generation of vortices in the bilge, which previously existed, is almost eliminated, contributing to improved propulsion performance and fuel consumption.
第１〜４図は従来の船舶を示すもので、第１図
はその側面図、第２図はその平面図、第３図は第
２図の−矢視断面図、第４図は第２図の−
矢視断面図であり、第５〜１０図は本考案の一
実施例としての船舶の抵抗減少装置を示すもの
で、第５図はその側面図、第６図はその平面図、
第７図は第６図の−矢視断面図、第８図は第
７図の−を拡大して示す断面図、第９図は第６
図の−矢視断面図、第１０図は第９図のＸ部
を拡大して示す断面図である。
１……船体、２……舵、３……プロペラ、５…
…船側、６……船底、７……船体前半部のビルジ
部、８……船体後半部のビルジ部、１１……水吸
入口、１２……吸入管、１３……ポンプ、１４…
…放出管、１５……水放出口、１６，１７……流
線。
Figures 1 to 4 show a conventional ship; Figure 1 is a side view, Figure 2 is a plan view, Figure 3 is a cross-sectional view taken along the - arrow in Figure 2, and Figure 4 is a cross-sectional view of Figure 2. Figure -
5 to 10 show a resistance reducing device for a ship as an embodiment of the present invention, FIG. 5 is a side view thereof, FIG. 6 is a plan view thereof,
Fig. 7 is a sectional view taken in the direction of - arrow in Fig. 6, Fig. 8 is an enlarged sectional view showing - in Fig. 7, and Fig. 9 is a sectional view showing - in Fig. 6.
10 is an enlarged cross-sectional view showing the X section in FIG. 9. FIG. 1... Hull, 2... Rudder, 3... Propeller, 5...
...Ship side, 6...Bottom, 7...Bilge part of the front half of the hull, 8...Bilge part of the rear half of the hull, 11...Water inlet, 12...Suction pipe, 13...Pump, 14...
...Discharge pipe, 15...Water discharge port, 16, 17...Streamline.
Claims (1)
ともに、船体後肩部のビルジ部にビルジ部外板に
沿つて水を放出しうる水放出口をそなえ、これら
の水吸入口と水放出口とを接続する配管が船内に
設けられて、同配管にポンプが介装されたことを
特徴とする、船舶の抵抗減少装置。 The bilge on the front shoulder of the hull is equipped with a water inlet, and the bilge on the rear shoulder of the hull is equipped with a water outlet that can discharge water along the outer skin of the bilge. A resistance reduction device for a ship, characterized in that a pipe connecting the two is provided inside the ship, and a pump is interposed in the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983061721U JPS59167090U (en) | 1983-04-25 | 1983-04-25 | Ship drag reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983061721U JPS59167090U (en) | 1983-04-25 | 1983-04-25 | Ship drag reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59167090U JPS59167090U (en) | 1984-11-08 |
| JPS6319275Y2 true JPS6319275Y2 (en) | 1988-05-30 |
Family
ID=30191938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983061721U Granted JPS59167090U (en) | 1983-04-25 | 1983-04-25 | Ship drag reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59167090U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5645148B2 (en) * | 2013-06-28 | 2014-12-24 | 独立行政法人海上技術安全研究所 | Ship frictional resistance reduction device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015286A (en) * | 1973-06-15 | 1975-02-18 | ||
| JPS5140498A (en) * | 1974-10-04 | 1976-04-05 | Toyo Boseki | Tennen moshikuha goseihoriamidokeiseniseihinno kaishitsukakoho |
-
1983
- 1983-04-25 JP JP1983061721U patent/JPS59167090U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5015286A (en) * | 1973-06-15 | 1975-02-18 | ||
| JPS5140498A (en) * | 1974-10-04 | 1976-04-05 | Toyo Boseki | Tennen moshikuha goseihoriamidokeiseniseihinno kaishitsukakoho |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59167090U (en) | 1984-11-08 |
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