JP2006044298A - Water surface floating object collection ship - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water surface floating object collecting ship capable of collecting the water surface floating object by over-streaming into the ship through utilization of a flow generated by a water level difference between inside and outside of the hull from the top of a counter-flow preventive float type rising/falling door tilting to the inside of a collecting chamber, by creating a water level difference between inside and outside of the hull forcedly and allowing the counter-flow preventive float type rising/falling door to make automatically a rise and fall swingingly with the inside-outside water level difference through utilization of the created value of water level difference. <P>SOLUTION: The water surface floating object collecting ship is composed of floats 2 located on both boardsides, a collection chamber 3 located between the floats 2, the counter-flow preventive float type rising/falling door 4 located on the side of the chamber 3 nearer the bow, rising and falling automatically centering on the bottom as the rotational fulcrum swingingly with the inside-outside water level difference and falling toward inside the ship, and rising up toward outside the ship, a water passage 5 located in the stern side lower part of the chamber 3, and a propeller 6 located in the water passage 5. Further a collecting means is provided whereby the water level is lowered by draining forcedly the water from the collecting chamber through the water passage with the drive of the propeller and a water level difference between the inside and outside of the hull is created forcedly, and the door is allowed to rise and fall swingingly automatically through utilization of the created water level difference, and the floating object is allowed to make over-stream into the collecting chamber for being collected through utilization of the flow generated by the water level difference between inside and outside of the hull from the top of the door tilting toward the collecting chamber. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a surface-floating matter collection ship that collects water-floating matter such as oil and dirt floating on the surface of the water, and in particular, forcibly creates a water level difference inside and outside the ship and uses this to create a difference in water level inside and outside the ship. This is related to a floating surface recovery ship that uses a flow generated by the difference in water level inside and outside the hull from the upper end of the backflow prevention float type hoisting door body that swings up and down automatically. is there.

About 700 oil spill accidents occur every year in Japan and around the sea. A large-scale oil spill accident has occurred globally, but a tanker that occurred off the coast of Oki Island in Shimane Prefecture in January 1997 was the most recent oil spill incident in Japan. And a grounding accident that occurred in Tokyo Bay in July of the same year.
Especially for the occurrence of oil spills due to the tanker sinking accident, various oil recovery vessels and oil recovery equipment were dispatched and tried to recover the oil, but it was almost useless and ultimately relied on human tactics. Is well known. Needless to say, oil that has flowed into the sea is not easily decomposed and cannot be recovered over time, so it must be quickly removed from the viewpoint of preventing marine pollution and protecting the marine environment.
In addition, it is no exaggeration to say that the marine environment is in the worst state because harbors and fishing ports are chronically polluted by floating water such as oil discharged from ships and other large and small garbage. In particular, in closed sea areas such as harbors and fishing ports, regardless of the amount of floating oil and the size of other garbage, removing them can prevent pollution of ports and fishing ports that are closely linked to people's lives. Indispensable from the viewpoint of environmental conservation.
JP-A-10-258793 JP-A-11-5590 JP-A-11-152080 JP-A-11-222185

In the invention of Japanese Patent Laid-Open No. 10-258793, when introducing oily water containing spilled oil on the water surface side through a water conduit, water at a position lower than the water surface is also introduced, and only water surface suspended matter is efficiently used. Recovery is difficult.
The invention of Japanese Patent Application Laid-Open No. 11-5590 is a mechanism for tilting the stern part partition plate and causing it to overflow and recovering water surface suspended matter. As described in [0011] of the specification, the surface layer of the wave is stern. It is necessary to adjust the height (inclination) so that it hits the upper part of the partition plate, and because it is not a structure that automatically swings the stern partition plate due to the difference in internal and external water levels, the suitability and change of the adjustment method Depending on the condition of the water surface, it is difficult to efficiently recover only the suspended matter on the water surface.
The invention of Japanese Patent Application Laid-Open No. 11-152080 is a mechanism for tilting the front upper rigid plate or the front wall body and collecting the floating surface by overflowing, but the upper end of the front upper rigid plate or the front wall body is above the sea surface. It is necessary to adjust the height (inclination) so that it is slightly higher and fix it, and because it is not a structure that automatically swings up and down the front upper rigid plate or front wall body due to the difference in internal and external water levels, Depending on the suitability of the method and the changing water surface conditions, it is difficult to efficiently recover only water surface suspended matter.
The invention of Japanese Patent Laid-Open No. 11-222185 has a structure for sucking and recovering lost oil simultaneously with seawater from the suction port, and it is difficult to efficiently recover only water surface suspended matter.

  The present invention has been devised in view of the above problems, and has been devised to solve the problems. The object of the present invention is to forcibly create a difference in water level inside and outside the ship and to use this to The surface of the water using the flow generated by the difference in water level inside and outside the hull from the upper end of the backflow prevention float type hoisting door body that automatically swings up and down by tilting into the collection chamber. It is an object of the present invention to provide a water surface floating substance recovery ship that allows a floating substance to flow over and be recovered in the ship.

  In order to achieve the above object, the present invention has a buoyancy body on both sides, a recovery chamber is provided between the buoyancy bodies on both sides, and the inside and outside of the recovery chamber have a lower end as a rotation fulcrum. A float-type hoisting door that prevents rocks from rising and falling automatically, rises toward the inside of the ship, and stands up toward the outside of the ship is provided, and a water passage is provided at the bottom of the stern side of the recovery chamber. A propeller is installed, and the water in the collection chamber is forcibly drained through the water channel by driving the propeller to lower the water level and forcibly create the water level difference between the inside and outside of the ship. Means to float and float the water surface into the collection chamber using the flow generated by the difference in water level inside and outside the hull from the upper end of the backflow prevention float type undulation door that tilts up and down in the collection chamber It is made up of.

  As is clear from the above description, according to the water surface floating substance recovery ship according to the present invention, the propeller provided in the water channel is driven to forcibly drain the water in the recovery chamber through the water channel and lower the water level. Therefore, it is possible to forcibly create a water level difference between the inside and outside of the ship, and by using this, the backflow prevention float type hoisting door body is automatically swung up and down by the difference between the inside and outside water levels, and the backflow prevention float type hoisting door body The upper end can be made to follow the fluctuating water surface inside the ship, and only the surface water including the water surface suspended matter on the outside of the ship with a high water level can be efficiently tilted to the inside of the ship using the flow generated by the water level difference inside and outside the ship. The floating surface can be efficiently collected in the collection chamber by allowing it to flow into the collection chamber from the upper end of the backflow prevention float type undulating door body. Moreover, since the water is forcedly discharged from the water passage on the stern side at the time of recovery, the recovery ship moves forward by the reaction, and it is possible to make the water surface floating overflow from the bow side to facilitate recovery.

Hereinafter, the present invention will be described more specifically based on the best mode for carrying out the invention described in the drawings.
Here, FIG. 1 is a schematic perspective view of a water surface float recovery ship, FIG. 2 is a schematic internal perspective view of the water surface float recovery ship, FIG. 3 is a schematic plan view of the water surface float recovery ship, and FIG. It is a schematic sectional side view of a ship.

  In the figure, a water surface floating substance recovery ship 1 has a buoyancy body 2 on both sides, a recovery chamber 3 between the buoyancy bodies 2 on both sides, and a backflow prevention float type undulation on the bow side of the recovery chamber 3. A door body 4 is provided, a water passage 5 is provided in the lower part of the stern side of the collection chamber 3, and a propeller 6 is provided in the water passage 5. Then, the floating surface recovery vessel 1 drives the propeller 6 to forcibly drain the water in the recovery chamber 3 through the water passage 5 to lower the water level and forcibly create a water level difference inside and outside the ship. It is a mechanism for recovering the floating surface a by flowing into the recovery chamber 3 using the flow generated by the difference in water level inside and outside the ship body from the upper end of the float-type hoisting door body 4 that automatically swings up and down. ing.

  The buoyancy body 2 fulfills the function of floating the floating surface collection vessel 1 and is installed on the left and right sides of the floating surface collection vessel 1. The left and right buoyancy bodies 2 are symmetric when viewed from above, and the tip side of the bow side of each of the left and right buoyancy bodies 2 is formed so that the upper side protrudes forward. The outer side surfaces of the left and right buoyancy bodies 2 are formed, for example, in a substantially straight line from the projecting bow to the stern, and the inner side surfaces of the left and right buoyancy bodies 2 are tapered at the tip side projecting on the bow side, for example. It is opened in the shape of an inverted head toward the front, and is formed so that the water surface floating material a can easily enter between the left and right buoyancy bodies 2, and is formed in a straight line parallel to each other from there toward the stern. ing.

  The buoyancy body 2 is predetermined even when the recovery chamber 3 is filled with water surface a and water such as seawater or fresh water, or when the lower end side 32 of the recovery chamber 3 described later is open. The buoyancy is applied to the floating surface recovery vessel 1 so that the upper end of the door body 4 is higher than the outside water surface by a predetermined height in the vertical standing state, that is, the backflow prevention float-type hoisting door body 4 is in a vertical standing state. The floating surface a in the recovery chamber 3 is prevented from flowing over the upper end of the backflow prevention float type hoisting door body 4 and flowing out of the ship or sinking the floating surface recovery vessel 1. The specific gravity of the buoyant body 2 is adjusted so that the predetermined draft can be obtained with respect to the floating surface recovery vessel 1, and the inside thereof is, for example, a cavity.

  The recovery chamber 3 is installed between the left and right buoyancy bodies 2 at a location for recovering and storing the water surface floating material a that has overflowed with the surface water. The recovery chamber 3 has, for example, a box-like shape on the upper side, and a float-type undulating door body 4 that prevents backflow in the width direction on the bow side of the recovery chamber 3 can be raised and lowered toward the recovery chamber 3. Is provided. In addition, a water passage 5 communicating with the water outside the ship is opened, for example, at the center lower part on the stern side of the recovery chamber 3. Note that the bottom surface and the left and right inner surfaces of the recovery chamber 3 are formed of, for example, blocking plates and are closed.

  An introduction bottom plate 31 is attached in a horizontal direction from a portion connecting the backflow prevention float type hoisting door body 4 on the bow side of the recovery chamber 3 to the front portion. The front end of the introduction bottom plate 31 is located on a line connecting the front ends of the left and right buoyancy bodies 2, and the rear end of the introduction bottom plate 31 is located closer to the front side inside the collection chamber 3. The lower side of the introduction bottom plate 31 protrudes in a V shape further forward from the mounting position of the backflow prevention float type undulating door body 4 at the upper part. The V-shaped lower tip side 32 of the recovery chamber 3 is structured to open and close to the left and right, and the lower tip side 32 opens to the left and right only when the floating surface collection vessel 1 moves backward, and the stern side water passage The water flowing into the collection chamber 3 from 5 is drained from the bow side. The surface-floating matter recovery ship 1 is configured to drain backward from the bow side so that it can move backward by the reaction.

  The lower end of the backflow preventing float-type hoisting door body 4 is pivotally connected by a plurality of hinges 41 on the introduction bottom plate 31 at the intermediate height portion on the bow side of the box-shaped collection chamber 3. The backflow prevention float type undulating door body 4 swings up and down automatically with a difference in water level between the inside and the outside with the hinge 41 as the center of rotation, tilts toward the inside of the recovery chamber 3 in the ship, and falls outside, that is, the recovery chamber 3. It is attached so that it stands up toward the outside.

  For this reason, stoppers (not shown) are formed at the front ends of the left and right side surfaces on the bow side of the collection chamber 3, for example, so that the backflow prevention float type hoisting door body 4 does not tilt further in the vertical standing state toward the outside of the ship. ing. The backflow prevention float type hoisting door body 4 has a structure in which both left and right ends abut against a stopper (not shown) to prevent further tilting from the vertical standing state toward the outside of the bow on the bow side.

  The backflow prevention float type undulating door body 4 automatically swings up and down due to the difference in water level between the inside and outside with the hinge 41 at the lower end as a pivot point. When the water level inside the ship returns to the same height as the outside of the ship, the water level inside the ship returns to the same level as the outside of the ship. Rotate upright. Thus, the backflow prevention float type undulating door body 4 is configured to have buoyancy so as to automatically swing up and down due to the difference in water level between the inside and outside, and has, for example, a rectangular plate shape with a hollow inside. .

  The left and right side ends of the backflow prevention float type hoisting door body 4 that swings up and down are in contact with the left and right inner side surfaces of the recovery chamber 3 on the bow side, so that water tightness is maintained. For this reason, water-tight materials are attached to the left and right side ends of the backflow prevention float-type hoisting door body 4 or to the left and right inner side surfaces of the recovery chamber 3 on the bow side. The outside water is prevented from flowing into the recovery chamber 3 from between the side surfaces.

  The water channel 5 is mainly used as a water channel for discharging the water in the recovery chamber 3 out of the ship when the water level in the recovery chamber 3 is lowered to forcibly create a difference between the internal and external water levels. As described above, it is also used as a water channel for allowing the water outside the ship to flow into the recovery chamber 3 when the water surface floating substance recovery ship 1 is moved backward. The water passage 5 has, for example, a cylindrical shape, one end of which faces the stern side lower central side in the collection chamber 3 and the other end faces the outside of the ship.

  For example, a screw-type propeller 6 is disposed inside the cylindrical water passage 5 so as to be rotatable forward and backward. The propeller 6 mainly rotates forward to forcibly discharge the water in the recovery chamber 3 to the outside of the ship, and performs a function of causing the water outside the ship to flow into the recovery chamber 3 by reversely rotating in the secondary direction. A drive shaft 61 of the propeller 6 extends forward and is interlocked and connected to a drive device 62 including an engine in an engine chamber 33 installed on the rear center side of the collection chamber 3 in front of the water passage 5. Yes.

  The front side of the engine chamber 33 installed on the rear center side in the recovery chamber 3 is formed in a V shape, for example, facing forward, and the water in the recovery chamber 3 is on the left and right side surfaces of the engine chamber 33. It is designed to flow easily. Openings 34 are formed on both the left and right side surfaces behind the engine chamber 33 so that the water in the collection chamber 3 flows toward the water passage 5 behind the engine chamber 33. One end of the water passage 5 faces between the left and right openings 34.

  Opening / closing lids (not shown) are attached to the left and right openings 34 on the other end side facing the outside of the water passage 5 or the both sides on the rear side of the engine chamber 33 as necessary. When the collection chamber 3 and the outside of the ship are not in a water-permeable state, that is, when it is not desired to discharge the water in the collection chamber 3 to the outside of the ship or to prevent the water outside the ship from flowing into the collection chamber 3, By closing, the flow into and out of the collection chamber 3 can be prevented.

  Further, for example, a mesh-like exchangeable filter (not shown) is attached to the left and right openings 34 as necessary. The filter prevents a part of the floating surface a from sinking and being discharged out of the ship along with the drainage through the water passage 5, or the water surface floating material a adheres to the propeller 6 in the water passage 5 and the propeller 6. The function to prevent the cause of failure.

Next, the operation of the floating surface collection ship based on the configuration of the best mode for carrying out the invention will be described below.
The floating surface collection ship 1 is moved to the collection water area where the floating surface a floats. The movement of the floating surface collection vessel 1 may be towed using another vessel or propelled by itself. When towing to the recovery water area where the floating surface a floats, the water passage 5 or the opening 34 opens an open / close lid (not shown) to make the flow in the recovery chamber 3 free. When towing with a large amount of collected material left in the collection chamber 3, an unillustrated opening / closing lid is kept closed. When the water passage 5 or the opening 34 is closed by an unillustrated opening / closing lid for self-propulsion, the opening / closing lid is opened before the propeller 6 is rotated to connect the collection chamber 3 and the outside of the ship to the opening 34 and the water passage. 5 to communicate.

  When the water surface floating substance recovery ship 1 moves forward or backward by itself, the propeller 6 in the water passage 5 is rotated forward or reverse. When the propeller 6 is rotated in the forward direction, that is, in the direction for discharging the water in the collection chamber 3, the water surface floating substance recovery ship 1 moves forward by the reaction by draining from the water passage 5 toward the rear outside the ship. On the other hand, when the propeller 6 is rotated in the reverse direction, that is, in the direction in which water flows into the recovery chamber 3, the lower front end side 32 on the bow side is opened, from which the water in the recovery chamber 3 is discharged to the outside of the ship. It will be discharged, and the surface floating substance recovery ship 1 moves backward by the reaction.

  When the floating surface recovery vessel 1 moves forward, if the water level in the recovery chamber 3 is drained from the water passage 5 and the water level in the recovery chamber 3 is lowered, the backflow prevention float type undulating door body 4 is tilted toward the inner side of the recovery chamber 3, Water flows into the recovery chamber 3 after overflowing from the prevention float type undulating door body 4. When the floating surface recovery vessel 1 moves backward, the lower tip side 32 on the bow side is opened, and the water flowing into the recovery chamber 3 is discharged from the lower tip side 32.

  When the floating surface recovery vessel 1 arrives at the recovery area where the floating surface a floats by towing or self-propelled, the backflow prevention float type relief door 4 of the recovery chamber 3 of the floating surface recovery vessel 1 is placed on the floating surface a side. Then, the water in the recovery chamber 3 is forcibly drained to lower the water level and forcibly create a water level difference inside and outside the ship. This is performed by rotating the propeller 6 in the water passage 5 in the forward direction, that is, in the direction for discharging the water in the recovery chamber 3.

  When the propeller 6 is rotated forward, the water in the collection chamber 3 starts to move toward the stern side behind. The water moving to the stern side is divided into left and right at the front side formed in a V shape toward the front of the engine chamber 33 provided on the stern side, and the left and right side surfaces of the engine chamber 33 are directed rearward. The air flows into the interior through openings 34 formed on the left and right side surfaces behind the engine chamber 33. One end of the water passage 5 is connected and opened at the rear ends of the left and right openings 34, and the water in the recovery chamber 3 that has flowed into the interior of the opening 34 from the opening 34 is circulated in the water passage 5 by the rotating propeller 6. The water is sucked in and flows through the propeller 6 and is drained from the other end of the water passage 5 to the outside of the ship.

  By continuously performing the above operation, the water level in the recovery chamber 3 of the water surface floating substance recovery ship 1 falls and a water level difference is forcibly created inside and outside the ship. That is, the water level in the ship becomes relatively low. At this time, since the amount of discharged water decreases, the floating surface recovery vessel 1 tries to rise from the balanced draft.

  When the water level in the recovery chamber 3 is forcibly lowered and a water level difference between the inside and outside of the ship occurs, a water pressure difference between the inside and outside due to the water level difference occurs on both the inside and outside of the backflow preventing float type undulating door body 4. That is, when the water level in the recovery chamber 3 becomes lower than the water level outside the ship, the water pressure outside the ship increases, and the backflow prevention float type relief door body 4 provided on the bow side of the recovery chamber 3 faces the recovery chamber 3. As a result, a force corresponding to the increased water pressure acts, so that the backflow prevention float type hoisting door body 4 swings and tilts toward the inside of the recovery chamber 3 with the hinge 41 at the lower end as a pivot. For this reason, the backflow prevention float type undulating door body 4 follows the water level inside the ship.

  When the backflow prevention float type hoisting door body 4 swings and inclines toward the inside of the collection chamber 3, the height of the upper end gradually inclines and becomes lower than the height of the water surface outside the ship. The surface water outside the ship is inclined to overflow from the upper end of the float type hoisting door body 4 where the water surface outside the ship is inclined due to the water level difference. Then, the water surface suspended matter a flows into the recovery chamber 3 and is recovered together with the inflowing water surface water. At this time, the backflow-preventing float type undulating door body 4 is swung up and down due to the difference in water level between the inside and outside, and the upper end follows the fluctuating water surface in the ship. be able to.

  Since the floating surface a and the surface water flow into the recovery chamber 3 from the upper end of the backflow-preventing float type undulating body 4, the surface floating recovery vessel 1 compensates for the decrease in the amount of drainage by this inflow. , Can keep a constant draft.

  The floating surface a that has flowed into the recovery chamber 3 together with the overflow water floats on the water surface in the recovery chamber 3, and the inflowed water moves toward the lower water passage 5 on the stern side of the recovery chamber 3. Discharged from the ship. By discharging backward from the water passage 5, the water surface floating substance recovery ship 1 moves toward the water surface floating object a in front by the reaction, so that the water surface floating object a is efficiently recovered.

  Further, coupled with this, the water surface floats on both sides of the backflow prevention float type undulating door body 4 over which the water surface floating substance a overflows by the front end sides of the left and right buoyant bodies 2 expanding in a reverse H-shape toward the front. Water surface floating material a floating on the water surface in front of the material recovery ship 1 moves toward the backflow prevention float type undulating door body 4 between the front ends of the left and right buoyancy bodies 2 and is easy to flow in. Collected.

  The present invention is not limited to the best mode for carrying out the invention. For example, in the case of increasing the size as shown in FIG. 5, the engine chamber 33, the water passage 5, the propeller 6, and the drive shaft 61. It is a matter of course that various modifications can be made without departing from the spirit of the present invention, such as providing a two-engine, two-shaft, two-propeller type structure in the buoyancy body 2 on both sides.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view of a water surface floating substance recovery ship showing the best mode for carrying out the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic internal perspective view of a water surface floating substance recovery ship showing the best mode for carrying out the present invention. It is a schematic plan view of the water surface floating substance recovery ship which shows the best form for implementing this invention. It is a schematic sectional side view of the water surface floating substance recovery ship which shows the best form for implementing this invention. It is a schematic perspective view of the water surface floating substance recovery ship which shows the form of the other example for implementing this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water surface float collection ship 2 Buoyant body 3 Collection chamber 32 Lower tip side 33 Engine room 34 Opening part 4 Backflow prevention float type hoisting door body 41 Hinge 5 Water passage 6 Propeller 61 Drive shaft 62 Drive device a Water surface float

Claims (1)

There is a buoyant body on both sides, and a recovery chamber is provided between the buoyant bodies on both sides. Float-type floating doors that prevent the backflow and stand up toward the outside of the ship are provided, a water passage is provided at the lower part of the stern side of the collection chamber, a propeller is provided in the water passage, and the propeller is driven through the water passage. Forcibly drain water to lower the water level and forcibly create a water level difference between the inside and outside of the hull. Using this, the backflow prevention float type hoisting door body is automatically swung up and down and tilted toward the collection chamber A surface-floating matter recovery vessel that collects water surface floats in a recovery chamber by using a flow generated by a difference in water level inside and outside the ship body from the upper end of a float-type hoisting door body that prevents backflow.

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