JPH0150639B2 - - Google Patents
Info
- Publication number
- JPH0150639B2 JPH0150639B2 JP2221282A JP2221282A JPH0150639B2 JP H0150639 B2 JPH0150639 B2 JP H0150639B2 JP 2221282 A JP2221282 A JP 2221282A JP 2221282 A JP2221282 A JP 2221282A JP H0150639 B2 JPH0150639 B2 JP H0150639B2
- Authority
- JP
- Japan
- Prior art keywords
- duct
- water jet
- water
- air
- stern
- 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 53
- 238000011109 contamination Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
Description
【発明の詳細な説明】
本発明は、船尾部後端から水ジエツトを噴出さ
せることにより推進できるようにした船舶に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ship that can be propelled by jetting water from the rear end of the stern.
従来の水ジエツト推進船としては、第１図に示
すようなものがあり、船体１の船尾部１ａには、
その船底の取水口６ａから後方へ昇傾斜して船尾
部後端の水ジエツト噴出口７へ至る水ジエツト噴
出用ダクト６が設けられていて、ダクト６の後部
内には、ポンプ動翼車４が配設されている。 As a conventional water jet propulsion vessel, there is one shown in FIG.
A water jet spouting duct 6 is provided that ascends and slopes rearward from the water intake port 6a on the bottom of the ship and reaches a water jet spout 7 at the rear end of the stern section. is installed.
なお、ポンプ動翼車４は、駆動軸３を介して主
機２に連結されている。 Note that the pump rotor 4 is connected to the main engine 2 via the drive shaft 3.
また、ポンプ動翼車４よりも後方には、固定ボ
ス部１１付きの静翼５が設けられている。 Further, behind the pump rotor wheel 4, a stator blade 5 with a fixed boss portion 11 is provided.
したがつて、主機２によりポンプ動翼車４を回
転させることにより、取水口６ａからダクト６内
へ水が吸入されて、水ジエツト噴出口７から高速
の水ジエツトが噴出されるため、その反作用によ
り、船が推進されるようになつている。 Therefore, by rotating the pump rotor 4 by the main engine 2, water is sucked into the duct 6 from the water intake 6a, and a high-speed water jet is ejected from the water jet outlet 7, so that the reaction Ships are now being propelled by
また、操縦装置８は左右に首振りが可能であ
り、これにより水ジエツトの方向を変えて船の進
行方向を変化させることができる。 Further, the control device 8 can be swung left and right, thereby changing the direction of the water jet and changing the direction of movement of the ship.
しかしながら、このような従来の水ジエツト推
進船では、停船状態において、駆動軸３の中心が
静水面９と一致するか、あるいは水中下に没して
いる場合が多いので、ダクト６の内部にも水が侵
入していることが多く、これによりダクト７の内
面や水ジエツト噴出口７の内面あるいはポンプ動
翼車４や静翼５に、水中生物が付着して汚損を生
じるという問題点がある。そして静水面９の近傍
では、特にその汚損が著しい。 However, in such conventional water jet propulsion ships, when the ship is stationary, the center of the drive shaft 3 is often aligned with the still water surface 9 or is submerged underwater, so that the inside of the duct 6 is also Water often enters the pump, and this poses a problem in that aquatic organisms adhere to the inner surface of the duct 7, the inner surface of the water jet outlet 7, the pump rotor 4, and the stationary blades 5, causing contamination. . In the vicinity of the still water surface 9, the pollution is particularly significant.
また、ダクト７の内部等をクリーニングするこ
とは困難なことであり、したがつてダクト７の内
部等が汚損されると、これによる摩擦抵抗が急激
に増大して、推進効率が大幅に低下するという問
題点がある。 Furthermore, it is difficult to clean the inside of the duct 7, and therefore, if the inside of the duct 7 becomes dirty, the resulting frictional resistance increases rapidly, and the propulsion efficiency decreases significantly. There is a problem.
本発明は、このような問題点を解決しようとす
るもので、停船時にダクト内部の水を排出し、ダ
クトの内部やポンプ動翼車あるいは静翼等が水中
生物によつて汚損されるのを防止できるようにし
た水ジエツト推進船を提供することを目的とす
る。 The present invention aims to solve these problems by draining the water inside the duct when the ship is stopped and preventing the inside of the duct, pump rotor, stationary blades, etc. from being contaminated by aquatic organisms. The purpose of the present invention is to provide a water jet propulsion vessel that can prevent the above problems.
このため、本発明の水ジエツト推進船は、船尾
部船底の取水口から後方へ昇傾斜して船尾部後端
の水ジエツト噴出口へ至る水ジエツト噴出用ダク
トをそなえるとともに、同ダクトの後部内に配設
されたポンプ動翼車と、同ポンプ動翼車よりも後
方に設けられた静翼とをそなえ、上記静翼のボス
部が固定前半部と可動後半部とで構成されて、上
記水ジエツト噴出口を開閉すべく、上記静翼ボス
部の可動後半部を前後に移動させうるアクチユエ
ータが設けられるとともに、停船時に上記ダクト
内の水を空気で置換するための空気噴出手段が、
同ダクトに接続されたことを特徴としている。 For this reason, the water jet propulsion vessel of the present invention is equipped with a water jet ejection duct that ascends and slopes rearward from the water intake in the bottom of the stern to reach the water jet outlet at the rear end of the stern, and also includes a water jet ejecting duct in the rear of the duct. a pump rotor wheel disposed at the pump rotor, and a stator vane provided rearward of the pump rotor wheel, the boss portion of the stator vane being composed of a fixed front half portion and a movable rear half portion; An actuator is provided that can move the movable rear half of the stationary vane boss back and forth in order to open and close the water jet outlet, and an air jetting means for replacing the water in the duct with air when the ship is stopped.
It is characterized by being connected to the same duct.
以下、図面により本発明の一実施例としての水
ジエツト推進船について説明すると、第２図はそ
の船尾部を示す説明図であつて、第２図中、第１
図と同じ符号はほぼ同様の部分を示している。 Hereinafter, a water jet propulsion boat as an embodiment of the present invention will be explained with reference to the drawings. FIG. 2 is an explanatory diagram showing the stern part of the boat.
The same reference numerals as in the figure indicate substantially similar parts.
さて、本水ジエツト推進船の場合も、船体１の
船尾部１ａに、その船底の取水口６ａから後方へ
昇傾斜して船尾部後端の水ジエツト噴出口７へ至
る水ジエツト噴出用ダクト６が設けられており、
ダクト６の後部内には、駆動軸３を介して主機２
により回転駆動されるポンプ動翼車４が設けられ
ている。 Now, in the case of a main water jet propulsion vessel as well, there is a water jet jet duct 6 in the stern part 1a of the hull 1 that ascends and slopes rearward from the water intake port 6a at the bottom of the ship to the water jet spout 7 at the rear end of the stern part. is provided,
The main engine 2 is connected to the rear part of the duct 6 via the drive shaft 3.
A pump rotor wheel 4 is provided which is rotationally driven by.
また、このポンプ動翼車４よりも後方には、静
翼５が設けられている。 Moreover, a stationary blade 5 is provided behind the pump rotor 4.
ところで、静翼５のボス部１１′は、静翼５付
きの固定前半部１１′ａと可動後半部１１′ｂとで
構成されており、固定前半部１１′ａ内には、ロ
ツドを介して可動後半部１１′ｂを前後に移動さ
せうるアクチユエータとしての油圧シリンダ１０
が設けられている。 By the way, the boss portion 11' of the stationary blade 5 is composed of a fixed front half section 11'a with the stationary vane 5 attached and a movable rear half section 11'b. Hydraulic cylinder 10 as an actuator that can move the movable rear half 11'b back and forth.
is provided.
そして油圧シリンダ１０には、制御弁１６，１
７を介して油圧ポンプ１２が接続されている。 The hydraulic cylinder 10 includes control valves 16 and 1.
A hydraulic pump 12 is connected via 7.
したがつて、油圧シリンダ１０を伸長させて、
可動後半部１１′ｂを後方へ移動させると、この
可動後半部１１′ｂは水ジエツト噴出口７を閉じ、
逆に油圧シリンダ１０を収縮させて、可動後半部
１１′ｂを前方へ移動させると、この可動後半部
１１′ｂは水ジエツト噴出口７を開く。 Therefore, by extending the hydraulic cylinder 10,
When the movable rear half 11'b is moved rearward, the movable rear half 11'b closes the water jet outlet 7,
Conversely, when the hydraulic cylinder 10 is contracted and the movable rear half 11'b is moved forward, the movable rear half 11'b opens the water jet spout 7.
なお、可動後半部１１′ｂの前方への移動によ
り、可動後半部１１′ｂと固定前半部１１′ａとは
一体のボス部１１′となる。 In addition, by moving the movable rear half part 11'b forward, the movable rear half part 11'b and the fixed front half part 11'a become an integral boss part 11'.
また、ダクト６には、空気注入口１３が形成さ
れており、この空気注入口１３は空気噴出手段を
構成する空気ポンプ１４に連通接続されている。 Further, an air inlet 13 is formed in the duct 6, and the air inlet 13 is communicatively connected to an air pump 14 constituting air jetting means.
したがつて、静翼ボス部１１′の可動後半部１
１′ｂによつて水ジエツト噴出口７を閉じた状態
で、空気ポンプ１４を作動させて、空気注入口１
３から空気を噴き出すことにより、ダクト６内の
水を空気で置換することができる。 Therefore, the movable rear half 1 of the stator vane boss portion 11'
1'b with the water jet outlet 7 closed, the air pump 14 is operated to open the air inlet 1.
By blowing out air from 3, the water in the duct 6 can be replaced with air.
上述の構成により、停船時には、油圧シリンダ
１０を伸長させて、静翼ボス部１１′の可動後半
部１１′ｂを後方へ移動させ、この可動後半部１
１′ｂで水ジエツト噴出口７を閉じておく。この
状態で、空気ポンプ１４を作動させて、空気注入
口１３を通じダクト６内へ空気を注入することに
より、ダクト６内の水を空気で置換する。 With the above configuration, when the ship is stopped, the hydraulic cylinder 10 is extended to move the movable rear half 11'b of the stationary vane boss 11' rearward, and the movable rear half 1
The water jet outlet 7 is closed at step 1'b. In this state, the air pump 14 is operated to inject air into the duct 6 through the air inlet 13, thereby replacing the water in the duct 6 with air.
その結果ダクト６内の水面は符号１５で示す位
置まで下がるため、ダクト６内からは水がなくな
り、これにより水中生物の付着による汚損の発生
を防止できる。 As a result, the water level inside the duct 6 drops to the position indicated by reference numeral 15, so that water disappears from inside the duct 6, thereby preventing the occurrence of contamination due to adhesion of aquatic organisms.
したがつて、この汚損による推進効率の低下も
防止することができる。 Therefore, a decrease in propulsion efficiency due to this contamination can also be prevented.
また、操船時には、油圧シリンダ１０を収縮さ
せて、静翼ボス部１１′の固定前半部１１′ｂとを
一体にして、第１図に示す従来の静翼ボス部１１
と同一形状にする。 In addition, during ship maneuvering, the hydraulic cylinder 10 is contracted to integrate the fixed front half part 11'b of the stator vane boss part 11', which is similar to the conventional stator vane boss part 11 shown in FIG.
Make it the same shape as.
このとき、水ジエツト噴出口７は開いており、
静翼ボス部１１′の形状も従来のもの１１と同一
になるため、航行時の推進効率の低下はない。 At this time, the water jet outlet 7 is open,
Since the shape of the stator vane boss portion 11' is also the same as that of the conventional one, there is no reduction in propulsion efficiency during navigation.
以上詳述したように、本発明の水ジエツト推進
船によれば、停船時にダクト内の水を排出して空
気と置換することが行なわれるので、ダクトの内
壁部やポンプ動翼車あるいは静翼等が水中生物に
よつて汚損されるのを十分に防止することがで
き、これによりこの汚損による推進効率の低下を
防止できる利点がある。 As described in detail above, according to the water jet propulsion vessel of the present invention, water in the duct is discharged and replaced with air when the vessel is stopped. etc. can be sufficiently prevented from being contaminated by aquatic organisms, and this has the advantage of preventing a decrease in propulsion efficiency due to this staining.
第１図は従来の水ジエツト推進船の船尾部を示
す説明図であり、第２図は本発明の水ジエツト推
進船の船尾部を示す説明図である。
１……船体、１ａ……船尾部、２……主機、３
……駆動軸、４……ポンプ動翼車、５……静翼、
６……水ジエツト噴出用ダクト、６ａ……取水
口、７……水ジエツト噴出口、８……操縦装置、
９……静水面、１０……アクチユエータとしての
油圧シリンダ、１１′……静翼ボス部、１１′ａ…
…静翼ボス部の固定前半部、１１′ｂ……静翼ボ
ス部の可動後半部、１２……油圧ポンプ、１３…
…空気注入口、１４……空気噴出手段を構成する
空気ポンプ、１５……水面、１６，１７……制御
弁。
FIG. 1 is an explanatory diagram showing the stern section of a conventional water jet propulsion boat, and FIG. 2 is an explanatory diagram showing the stern section of the water jet propulsion boat of the present invention. 1...Hull, 1a...Stern, 2...Main engine, 3
... Drive shaft, 4 ... Pump rotor, 5 ... Stationary blade,
6...Water jet spout duct, 6a...Water intake, 7...Water jet spout, 8...Control device,
9...Static water surface, 10...Hydraulic cylinder as actuator, 11'...Stator blade boss portion, 11'a...
...Fixed front half of stator vane boss, 11'b...Movable rear half of stator vane boss, 12...Hydraulic pump, 13...
...Air inlet, 14...Air pump constituting air ejection means, 15...Water surface, 16, 17...Control valve.
Claims (1)
尾部後端の水ジエツト噴出口へ至る水ジエツト噴
出用ダクトをそなえるとともに、同ダクトの後部
内に配設されたポンプ動翼車と、同ポンプ動翼車
よりも後方に設けられた静翼とをそなえ、上記静
翼のボス部が固定前半部と可動後半部とで構成さ
れて、上記水ジエツト噴出口を開閉すべく、上記
静翼ボス部の可動後半部を前後に移動させうるア
クチユエータが設けられるとともに、停船時に上
記ダクト内の水を空気で置換するための空気噴出
手段が、同ダクトに接続されたことを特徴とす
る、水ジエツト推進船。1. A water jet jet duct is provided that ascends and slopes rearward from a water intake in the bottom of the stern to a water jet outlet at the rear end of the stern, and a pump rotor is disposed within the rear of the duct; The pump is equipped with a stator vane provided behind the pump rotor, and the boss part of the stator vane is composed of a fixed front half part and a movable rear half part, and the stator vane is configured to open and close the water jet outlet. An actuator capable of moving the movable rear half of the wing boss portion back and forth is provided, and an air jetting means for replacing water in the duct with air when the ship is stopped is connected to the duct, Water jet propulsion vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2221282A JPS58139895A (en) | 1982-02-15 | 1982-02-15 | Water jet propulsion ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2221282A JPS58139895A (en) | 1982-02-15 | 1982-02-15 | Water jet propulsion ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58139895A JPS58139895A (en) | 1983-08-19 |
| JPH0150639B2 true JPH0150639B2 (en) | 1989-10-31 |
Family
ID=12076490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2221282A Granted JPS58139895A (en) | 1982-02-15 | 1982-02-15 | Water jet propulsion ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58139895A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6293836B1 (en) * | 2000-03-27 | 2001-09-25 | Bombardier Motor Corporation Of America | Water jet propulsion unit with means for varying area of nozzle outlet |
| JP5645568B2 (en) * | 2010-09-24 | 2014-12-24 | 三菱重工業株式会社 | Ship frictional resistance reducing device and marine organism adhesion preventing method for ship frictional resistance reducing device |
| JP5754905B2 (en) * | 2010-09-24 | 2015-07-29 | 三菱重工業株式会社 | Ship frictional resistance reducing device and marine organism adhesion preventing method for ship frictional resistance reducing device |
| WO2012139172A1 (en) * | 2011-04-15 | 2012-10-18 | Austal Ships Pty Ltd | Marine growth inhibiting system |
-
1982
- 1982-02-15 JP JP2221282A patent/JPS58139895A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58139895A (en) | 1983-08-19 |
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