JPS6037904Y2 - Oil-water separator on oil recovery vessel - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oil-water separation device for an oil recovery vessel that recovers floating oil spilled onto the surface of water such as a river or the sea.

Oil spills into the ocean caused by tanker sinking accidents, etc. cause enormous damage either directly or indirectly.

Various types of equipment have been developed to recover this oil, but their oil recovery capacity is limited and they are unable to collect floating oil over a wide area over a long period of time, or they do not work properly due to the effects of waves. There are serious drawbacks.

An object of the present invention is to provide an oil-water separator for an oil recovery vessel that can withstand harsh working conditions and operate efficiently and continuously for long periods of time.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

The drawings show one embodiment of the present invention, and numeral 1 in the drawings is a ship's hull.

This hull 1 has a twin-hull structure, and is equipped with an intermediate waterway 2 in the center from the bow to the stern, and the front hull 3 and rear hull 4 are connected together by bolts (not shown) at a connecting part 5. .

A wave shielding plate 6 is installed vertically inside the opening end of the intermediate waterway 2, and pitching prevention plates 7 are installed horizontally at the bow and stern of the vessel. 9 is installed horizontally.

The water discharge pipes 8 and 9 are connected to a water discharge pump 10, and are used to forcefully spray water (seawater) sent from the pump 10 diagonally rearward, thereby pushing floating oil backward.

An oil introducing device 12 is provided behind the water discharge pipe 9, on the left side in FIG.

This oil introduction device 12 includes a rotating drum 15 that is provided across the intermediate waterway 2 with a central shaft 14 supported on a bearing 13.13 provided on the side wall 11 of the intermediate waterway 2, a transmission, and a drive sprocket wheel. 16 and transmission chain 17,
and a drive device 19 that rotates the rotating drum 15 via a driven sprocket wheel 18;
A passage plate 22 is provided to form an introduction passage 20 for floating oil O below, and a squeezing roller 23 contacts the outer peripheral surface of the rotating drum 15 to squeeze out oil and water adhering to it. , actuate the drive device 19 to move the rotating drum 15 backward (
When the rotating drum 15 is rotated clockwise in FIG.
5, or the introduction passage 2 along with water.
0 and is sent to the rear of the rotating drum 15.

Note that the passage plate 22 is placed in the rear lower half of the rotary drum 15 at an appropriate distance from the rotary drum 15.
An introducing passage 20 for floating oil O is provided along the rotary drum 15 and between the side walls 11, 11 of the intermediate waterway 2.

In the above, the rotational circumferential speed of the rotating drum 15 is
, preferably about 2 to 4 times the ship's speed (
When the ship speed is 1 knot, the speed is set at approximately 60 to 120 m/min).

In addition, on the outer peripheral surface of the rotating drum 15, an adsorption mat 24, similar to artificial grass, is attached, in which relatively short fibers are densely planted on the surface, in order to increase the adhesion of floating oil and the force of drawing in water. It is set up.

Reference numeral 25 denotes a sealing member attached to the side wall 11 of the intermediate waterway 2 in close contact with the end surface of the rotating drum 15.
The sealing member 25 prevents floating oil that has passed through the rotary drum 15 from flowing forward and is collected at the rear of the rotating drum 15.

Note that waves hitting a portion of the rotating drum 15 that is higher than the central axis 14 are scattered upwards, impairing the introduction of floating oil to the rear.
On the other hand, in order to ensure that the waves that hit the parts of the rotating drum 15 that are lower than the central axis 14 go under the rotating drum 15 and introduce the floating oil to the rear, the rotating drum 15 should be as large and as high as possible. provided at the location.

However, in this case, if the position of the rotating drum 15 is too high, the troughs of the waves will be lower than the rotating drum 15 and the rotating drum 15 will
This point needs to be taken into account since the floating oil introduction function of the tank will be lost.

Incidentally, the radius r of the rotating drum 15 in the figure is set to 70 cm, and the height H of the central axis 14 from the water surface W, L is set to 22.5 cm, which covers waves up to approximately 55 cm.

From the above, the bearing 13 supporting the rotating drum 15 is attached to the screw shaft 35 screwed into the nut body 26, and the rotating drum 15 is moved up and down by operating the screw shaft 35.
The height of the waves can be adjusted freely according to the size of the waves.

The rotating drum 15 and the passage plate 22 are arranged above and below the rotating drum 15.
(in other words, the size and depth of the introduction passage 20).

Therefore, due to the rotation of the rotating drum 15, the suction mat 2
4 (the oil around the adsorption mat 24 also follows the rotating drum 15 and moves together with it), making it more efficient by correctly responding to the viscosity, type or temperature of the oil, the thickness of the oil layer, etc. Floating oil can be introduced into the reservoir 29.

Note that the structure of the vertical adjustment mechanism consisting of the nut body 26 and the screw shaft 35 is arbitrary in the present invention, and is not limited to that shown in the drawings.

A reservoir portion 29 is provided at the rear of the oil introduction device 12 configured as described above by the weir member 27 and the bottom plate 28.

The weir member 27 is provided to laterally intercept the intermediate waterway 2, and the bottom plate 28 is provided to block the intermediate waterway 2 from the passage plate 22 and the weir member 27.
A reservoir 29 is formed at the rear of the rotating drum 15.

The introduction passage 20 is opened at the upper part of this reservoir 29.

Therefore, when the rotational circumferential speed of the rotary drum 15 is increased appropriately, the water level (oil level) in the reservoir 29 becomes sufficiently higher than the water surfaces W and L, and the highly concentrated floating oil overflows the weir member 27.

As mentioned above, the weir member 27 directly determines the water level in the reservoir 29, in other words, the concentration of floating oil, and is connected to the partition plate 30 and the movable weir 31 attached to the upper part of the partition plate 30 so as to be able to move up and down. When the weir adjustment bundle 33 screwed onto the threaded pipe 32 is rotated, the movable weir 31 suspended below the bundle 33 via the rotary joint 34 is rotated.
It is designed to move up and down together with the handle 33.

Note that the upper edge of the movable weir 31 is connected to the upper end of the passage plate 22 and the water surface W.
, is slightly higher than L.

Furthermore, a tank 36 is provided behind the reservoir 29.

This tank 36 receives floating oil and water flowing in beyond the weir member 27, and has a recovery oil pipe 38 into which a suction pipe 37 is fitted vertically freely at its upper end, and a drain hole 39.

The recovery oil pipe 38 connects the suction pipe 37 to a suction pump 40 to recover floating oil in the tank 36 to the outside, and the drain hole 39 drains water in the tank 36 to the outside.

The suction pipe 37 is connected to the lower end of a suction pipe adjustment bundle 42 screwed onto the threaded pipe 41, and is configured to move up and down with respect to the recovery oil pipe 38 when the bundle 42 is rotated.

The suction port 43 of the suction pipe 37 is adjusted to a position higher than the water levels W and L and lower than the weir member 27.

Further, a throttle plate 45 is rotatably provided in the drainage hole 39 and is operated by a throttle bundle 44.
By rotating 5, the opening degree of the drain hole 39 can be freely adjusted.

Note that the suction pipe 37 is arranged at a position where fluctuations in the oil level in the tank due to pitching of the hull 1 or the like are minimal.

The hull 1 is equipped with a propulsion device as required.

Next, the operation of the oil recovery vessel constructed as described above will be explained.

The oil recovery ship floating in the oil floating area has water discharge pump 1.
0, the oil introduction device 12, and the suction pump 40, it is towed or moved from left to right in FIG. 1, etc.

The oil floating on the front of the hull 1 due to this movement of the hull 1 is
The water is sent to the intermediate waterway 2, but at this time the water discharge pipes 8 and 9
jets out water forcefully towards the floating oil, efficiently transporting the floating oil backwards.

The floating oil that has flowed through the intermediate waterway 2 in this way passes through the introduction passage 20 and enters the reservoir 29 due to the introduction effect caused by the rotation of the rotating drum 15, which constitutes the main body of the oil introduction device 12. After being pushed higher and increasing its concentration, it overflows the weir member 27 and enters the tank 36.

If necessary, adjust the gap between the rotating drum 15 and the passage plate 22 by moving the rotating drum 15 up and down.
The rotation of 5 effectively causes the oil to rotate, so that the oil is efficiently introduced into the reservoir part 29.

In this case, by operating the weir adjustment bundle 33, the movable weir 31
Adjust the height according to the specific gravity and viscosity of the floating oil, and adjust the overflow concentration of the floating oil and the degree of separation of the oil.

The squeezing roller 23 squeezes the oil that has been introduced adhering to the suction mat 24 of the rotating drum 15 into the reservoir 29, and also squeezes out the water contained in the suction mat 24 at the same time to prevent the oil from adhering to the suction mat 24. make it good.

The floating oil that has entered the tank 36 is further separated from moisture in this portion, and is recovered by the suction pump 40 through the suction pipe 37 and the recovery oil pipe 38 into a recovery tank (not shown).

Water that overflows the weir member 27 together with floating oil and enters the tank 36 is absorbed by the oil floating above and is discharged into the sea from the drainage hole 39.

In this case, seawater flows into the drainage hole 39 according to the vertical movement of the hull.
The aperture bundle 44 enters and exits the tank 36 through the
The aperture plate 45 is rotated to adjust the opening degree of the drain hole 39 to an appropriate degree, thereby suppressing fluctuations in the oil level in the tank 36 to the necessary minimum.

Note that a water separation tank 46 may be provided in the recovered oil pipe 38 in order to prevent water from entering the recovered oil as much as possible.

As explained above, in the oil-water separator for an oil recovery vessel according to the present invention, a rotary drum having an adsorption mat attached to the outer peripheral surface is provided in an intermediate waterway provided in the hull so as to cross the intermediate waterway, and the above-mentioned A passage plate is provided in the rear lower half of the rotating drum at an appropriate distance from the rotating drum, along the rotating drum and forming a floating oil introduction passage between the side walls of the intermediate waterway together with the rotating drum. Behind the rotating drum, a movable weir that can freely move up and down is located at the rear of the rotating drum, with a reservoir section communicating with the introduction passage that laterally blocks the intermediate waterway, and whose upper edge is located at a position slightly higher than the upper end of the passage plate and the water surface. A weir member with A driving device is connected to introduce the floating oil together with water into the reservoir through the introduction passage, and a sealing member is provided between the side wall of the intermediate waterway and the rotating drum to prevent backflow of the floating oil, and further, Behind the above-mentioned reservoir part, a tank is provided, which has a drain hole equipped with a throttle plate operated by a throttle handle, and which receives the floating oil that has overflowed the movable weir. Since an oil pipe is provided, and a suction pipe operated by an adjustment bundle is provided in the recovery oil pipe so as to be able to move up and down, the floating oil is removed by the action of the rotating drum 15 into the reservoir 29.
The floating oil is separated from the water, pumped upward, and overflows into the tank 36 at a high concentration, allowing the floating oil to be accurately and efficiently recovered.

In addition, by moving the movable weir 31 up and down according to the specific gravity, viscosity, or wave height of the floating oil, the overflow concentration and degree of separation of the floating oil can be adjusted appropriately, and the floating oil can be efficiently overflowed into the tank 36 and recovered. can do.

In addition, in the tank 36 provided behind the reservoir section 29,
A drain hole 39 with a throttle plate 45 is provided, and the water contained in the tank 36 together with the oil is discharged to the outside in an appropriate amount by adjusting the throttle plate 45, and the oil is positioned at a predetermined height and collected. Since the suction pipe 37 of the oil pipe 38 can be correctly aligned with the position of the oil, the oil can be accurately collected by the recovery oil pipe 38.

Furthermore, the structure is very simple, the functions of each component are unlikely to be impaired, and floating oil recovery work can be continued for a long time.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a plan view of an oil recovery vessel equipped with a young tree separation device according to the present invention;
3 and 3 are a plan view and a sectional view of the young tree separation device according to the present invention, FIG. 4 is a partially cutaway front view of the oil introduction device, and FIG. 5 is a side view of the front hull. be. 1... Hull, 2... Intermediate waterway, 11.
...Side wall, 15...Rotating drum, 19.
...Drive device, 20...Introduction passage, 22
... Passage board, 25 ... Seal member, 2
8... Bottom plate, 29... Reservoir, 31.
...Movable weir, O...Floating oil.

Claims (1)

[Scope of utility model registration request] A rotary drum 15 with a suction mat 24 attached to the outer peripheral surface is installed in an intermediate waterway 2 provided in the hull 1 so as to cross the intermediate waterway 2, and a passage plate 22 is provided in the rear lower half of the rotary drum 15. An introduction passage 20 for floating oil O is provided along the rotating drum 15 and between the side walls 11 and 11 of the intermediate waterway 2 together with the rotating drum 15 in a state where the floating oil O is appropriately separated from the rotating drum 15. 1
At the rear of 5 is a reservoir 29 that communicates with the introduction passage 20.
The weir member 27 is provided with a movable weir 31 which can be moved up and down, and whose upper edge is located at a position slightly higher than the upper end of the passage plate 22 and the water surface W, L, and which laterally blocks the intermediate waterway 2. Member 27
and a bottom plate 28 stretched between the passage plate 22, while the rotary drum 15 is provided with a bottom plate 28 stretched between the passage plate 22
A drive device 19 is connected to the drive device 19 which rotates the drum backward at a circumferential speed faster than the speed of the rotary drum 15 and introduces the floating oil O floating in front of the rotary drum 15 together with water into the reservoir 29 through the introduction passage 20. A sealing member 25 is installed between the side wall 11 of the rotary drum 15 and the rotating drum 15 to prevent the floating oil O from flowing backward, and a throttle plate 45 operated by a throttle bundle 44 is provided behind the reservoir 29. Drain hole 3
9, and is provided with a tank 36 for receiving the floating oil O that has overflowed the movable weir 31, and an oil recovery pipe 38 is provided in this tank 36, and the recovery oil pipe 38 is operated by an adjustment bundle 42. An oil-water separation device for an oil recovery ship, characterized in that a suction pipe 37 is provided so as to be vertically movable.