JP2915798B2 - Waterjet attitude control system for ships - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet attitude control system for a ship.

[0002]

2. Description of the Related Art Conventionally, as a ship attitude control apparatus, as shown in a side view and a front view of FIG. 3, a fin stabilizer 8 for suppressing roll motion by fins protruding on both sides of the ship, FIG. As shown in the cross-sectional view, there is known an anti-rolling tank or the like which controls the water between the tank 9 and the tank 10 by pouring water into the bottom of the ship, thereby increasing the inertia force of the hull and making it difficult to move.

[0003]

Problems to be solved by the invention (1) However,
The fin stabilizer method is intended to suppress the movement of the boat in the roll direction, and cannot suppress the pitch or yaw direction. This method is effective when the ship is in a running state, but not effective when the ship is in a berthing state. (2) In the anti-rolling tank method, water and the like are put into the bottom of the ship and controlled to use the inertia force to mainly suppress the movement in the roll direction, but the response is poor and there is no great effect. .

The present invention has been proposed in view of the above circumstances, and provides an economical waterjet attitude control apparatus for a ship which has good responsiveness and controls the three-dimensional movement of roll, pitch and yaw. The purpose is to do.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention is arranged at a front portion of a bottom plate of a ship, and is directed forward on a center line, diagonally forward slightly on both sides, or both sides on a slightly opposite side, or downward on a center line. Singular or left and right 1 that generates jet
A pair of jet nozzles, located at the rear of the bottom shell of the ship, respectively, slightly lateral to the centerline, laterally to the centerline, slightly backward to both sides of the centerline, slightly lateral to the centerline, both sides, or above the centerline A single or a pair of left and right jet nozzles for generating a downwardly directed jet, a tilt sensor for detecting the three-dimensional attitude of the hull, and control for controlling the blowing amount of each jet nozzle based on the output of the tilt sensor Board, and draws in external seawater, pressurizes it and jets it from each of the above jet nozzles, and is located on the port side.
And a pump and a motor .

[0006]

According to such a configuration, a plurality of jet nozzles for the water jet are provided, and the jet nozzles are controlled to actively control the boat by the water jet. Attitude control becomes possible at the same time.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a longitudinal sectional view showing the overall system diagram, and FIG. 2 is a plan view and a side view showing the arrangement of the jet nozzles and the water jet vector in FIG. 1, and FIGS. C) shows the first, second, and third embodiments in the case of three jet nozzles, four jet nozzles, and six jet nozzles, respectively. FIG. 3 is a list showing the arrangement of the jet nozzles in FIG. 2, the positions of the jet nozzles, and the water jet vectors.

First, the tilt sensor 1 on the hull 7 and the control panel
2. Jet nozzle 6, valve 3, and port side pump
A system consisting of the motor 4 and the motor 4 is constructed. In addition,
In FIG. 1, the pump 4 and the motor 5 are mounted on a hull 7.
Although it is shown as being installed, it is actually
is set up.

In such a structure, the tilt sensor 1
When the tilt of the hull 7 is detected, the control panel 2 adjusts the valve 3 and blows out the water pumped up by the motor 5 and the pump 4 from the jet nozzle 6 by an amount necessary for correcting the tilt of the hull. Control the attitude of In order to enable control of pitch, yaw and roll, a plurality of jet nozzles 6 are provided on the bottom of the ship in a manner to be described later.

Next, in FIG. 2, the arrangement of the jet nozzles will be described. As shown in FIG. 3, each jet nozzle generates a thrust by jetting a jet. First, FIG. 2A shows a first embodiment in the case of a three-jet nozzle type. In this case, one jet nozzle J1f for jetting a jet forward and downward is provided on the center line of the front portion of the bottom plate outer plate, and the left and right jet nozzles are respectively provided at the rear portion.
A pair of left and right jet nozzles J1a, J1a for jetting jets to the right are provided, and as shown by arrows, the water jets are controlled to control all pitch, yaw, and roll attitudes. According to the first embodiment, 3
The hull roll,
This embodiment is extremely useful industrially because a low-cost and economical water-jet attitude control device for a ship with less pitch and yaw is obtained.

FIG. 2B shows a second embodiment of the four-jet nozzle type. In this case, the front and rear jet nozzles are slightly opposite to the center line at the front of the bottom plate. J2f
And the jet nozzles J2a, J2a are arranged one by one on the left and right sides of the center line at the rear of the bottom panel. Here, the bow-side jet nozzle J2f injects a jet diagonally forward and downward to the left and a diagonal forward and forward downward, respectively, to the jet nozzle J2 on the stern side.
a respectively jets a jet diagonally to the left and back and down, and a jet diagonally to the right and back and down. In this way, all the attitudes of pitch, yaw and roll are controlled by the thrust of each jet nozzle. Such a second
According to the embodiment, the adoption of four jet nozzles reduces the roll, pitch and yaw of the hull not only during cruising but also during berthing, making it a relatively comfortable and economical watercraft for riding. This embodiment is extremely useful industrially because a jet type attitude control device is obtained.

FIG. 3C shows a third embodiment of a 6-jet nozzle type. In this case, a pair of right and left jet nozzles J3 are provided on the bottom outer plate on the bow side and on the stern side, respectively.
f, J3a are provided, and a pair of front and rear jet nozzles J4f, J4a are provided on the center line of the bottom shell, and the hull attitude is controlled by jets in the directions of arrows, respectively.
Here, the bow-side jet nozzles J3f, J3f and the stern-side jet nozzles J3a, J3a respectively jet a jet to the left and right, and the bow-side jet nozzle J4f and the stern-side jet nozzle J4a respectively jet a jet downward. . According to the third embodiment, by adopting the six jet nozzles, the roll, pitch and yaw of the hull are further reduced not only during cruising but also at berth, and the riding comfort is further improved. This embodiment is extremely useful industrially because a water jet type attitude control device for a ship with high performance is obtained.

2 (A), 2 (B), 2 (C) and 3
Shows an example of this, and various other arrangements of jet nozzles can be adopted. If it is desired to use the motor 5 and the pump 4 only at the port, if the heavy goods of the motor 5 and the pump 4 are provided on the port side, the weight of the ship can be reduced.

[0014]

According to such a structure, by directly controlling the attitude control of the ship based on the amount of water of the water jet, all attitudes of pitch, roll and yaw can be quickly controlled. In addition, the weight of motors, pumps, etc.
The bulk materials are used as equipment on the port side when berthing at the port,
Ships can be reduced in weight.

In short, according to the present invention, jets are respectively arranged at the front part of the outer shell of the bottom of the ship and generate jets which are directed forward on the center line, slightly forward on both sides, diagonally forward on both sides, or downward on the center line. A single nozzle or a pair of left and right jet nozzles, which are located at the rear of the outer shell of the ship, respectively, slightly lateral to the centerline, laterally to the centerline, rearward slightly to the centerline, and slightly lateral to the centerline, both sides One,
Alternatively, a single or a pair of left and right jet nozzles that generate a jet pointing downward on the center line, a tilt sensor that detects the three-dimensional attitude of the hull, and the amount of jet of each jet nozzle based on the output of the tilt sensor By having a control panel to control, and a pump that sucks in external seawater and pressurizes it to eject from each of the jet nozzles,
By adopting a selective combination of a total of 3 to 6 bow nozzles and stern jet nozzles, various types from economical low-cost type to efficiently reduce hull roll, pitch and yaw to deluxe high-tech type The present invention is extremely useful in industry since a water jet type attitude control device for a ship having the following performance is obtained.

[Brief description of the drawings]

FIG. 1 is an overall control system diagram of the present invention.

FIGS. 2A and 2B are a plan view and a side view showing an arrangement of the jet nozzle of FIG. 1 and a water jet thereof, respectively.
(B) and (C) show three and four jet nozzles, respectively.
This is a first, second, and third embodiment showing six cases.

FIG. 3 is a list showing an arrangement of jet nozzles in FIG. 2 and jet vectors thereof.

FIG. 4 is a side view and a front view of a ship showing a conventional fin stabilizer.

FIG. 5 is a cross-sectional view of a ship showing a conventional anti-rolling tank.

[Explanation of symbols]

 Reference Signs List 1 inclination sensor 2 control panel 3 valve 4 pump 5 motor 6 jet nozzle 7 hull 8 fin stabilizer 9 tank 10 tank 11 valve J1f jet nozzle J1a jet nozzle J2f jet nozzle J2a jet nozzle J3f jet nozzle J3a jet nozzle J4f

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-594 (JP, A) JP-A-3-193589 (JP, A) US Patent 4,541,357 (US, A) (58) Fields investigated (Int .Cl. ⁶ , DB name) B63B 39/08 B63H 25/46

Claims (1)

(57) [Claims] 1. A single or pair of left and right jets which are respectively disposed at the front of the bottom panel and generate jets which are directed forward on the center line, diagonally forward on slightly both sides, both sides on slightly both sides, or downward on the center line. The jet nozzles are located at the rear of the outer shell on the bottom of the ship, respectively, slightly lateral to the center line, laterally to the center line, rearward slightly to the center line, respectively, slightly lateral to the center line, to both sides, or on the center line. A single or a pair of left and right jet nozzles for generating downwardly directed jets, a tilt sensor for detecting the three-dimensional attitude of the hull, and a control panel for controlling the jet amount of each jet nozzle based on the output of the tilt sensor And suck in external seawater and pressurize it and jet from each jet nozzle
A water jet attitude control device for a ship, comprising a pump and a motor arranged on the port side .