JP3127147B2 - Oil spill recovery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil spill recovery device for collecting spilled oil such as heavy oil spilled by an accident such as a tanker in the sea, lake or river.

[0002]

2. Description of the Related Art Conventionally, as this type of oil spill recovery apparatus, for example, one disclosed in Japanese Patent Application Laid-Open No. 10-258793 is known. As shown in FIG. 10, this is a duct having a hull 1 floating on water and an intake port 2 provided on the front side of the hull 1 and provided with a fluid including oil spill floating on the surface of the water. Shape-like intake part 3,
A separating unit 4 is provided for separating the fluid taken in by the taking unit 3 into water and oil. The separating section 4 is provided with an upper opening tank 6 having an inlet 5 in the middle, which is provided in the hull 1 and communicates with the rear end of the intake section 3 and through which the captured fluid flows, and a water provided at the bottom of the tank 6. And a pump 8 for sucking the oil floating in the tank 6 and feeding it to a transport ship or the like. When the spilled oil is collected by the oil spill recovery device, when the hull 1 is moved forward, the fluid containing the spilled oil floating on the water surface flows in from the inlet 2 of the intake unit 3 and the tank of the separation unit 4 To 6.
In the tank 6, water is passed through the filtration unit 7 by the downward flow of the fluid, and the oil is filtered. Then, the fluid level in the tank 6 rises due to the inflow pressure of the fluid and the flow resistance of the filtration unit 7, and reaches the upper portion 6 a of the tank 6 above the inlet 5. In the upper portion 6a of the tank 6, the oil introduced into the tank 6 and the oil remaining after being filtered by the filtration unit 7 float up to form a layer, and this layered oil is sucked by the pump 8 and collected. To go.

[0003]

By the way, in this conventional oil spill recovery device, in the tank 6 of the separation section 4, the fluid level is raised by the inflow pressure of the fluid and the flow resistance of the filtration section. Since the rising height is not constant and the thickness of the raised oil layer is not constant, water is often sucked by the pump 8 and the efficiency of separating water and oil becomes extremely poor. There was a problem that there is. Further, the fluid level in the tank 6 is raised by the inflow pressure of the fluid and the flow resistance of the filtration unit, so that a vortex of the fluid is generated in the tank 6 and the fluid is easily stirred, so that the oil is mixed with the water. In this respect, there is a problem that the oil separation efficiency is impaired. As described above, in the case of a recovered oil having a poor separation efficiency between water and oil, the subsequent treatment by combustion or the like is hardly performed, so that the treatment is difficult, and the treatment amount is large. Even if the processing is performed, there is a problem that the processing efficiency is extremely low and there is much waste. In addition, the problem is further exacerbated when it has to be left in a drum or the like.

Conventionally, the separating section is constituted by arranging an oil-water separating tank in a row, and the oil floating in each tank is sequentially overflowed from the upper end of a partition wall of an adjacent separating tank to form a separating tank at a rear. We also collect oil and collect this oil,
When the fluid is introduced into the first separation tank, it is pumped using a pump, and during this pumping, water and oil are mixed and emulsified. Due to the high rate, there was a problem that the treatment after recovery was difficult as described above (for example, published in Japanese Patent Publication No. 7-100472, Japanese Utility Model Publication No. 60-9793, etc.).

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and allows a fluid to be taken in by natural flow so that water and oil can be separated without mixing as much as possible. It is an object of the present invention to provide an spilled oil recovery device capable of significantly improving the oil separation efficiency by allowing only the oil to float up and take out the oil.

[0006]

An oil spill recovery system according to the present invention for solving the above-mentioned problems includes a hull floating on water and a fluid containing spilled oil attached to the hull and floating on the water surface. In a spilled oil recovery device comprising a take-in part for inflow and take-in, and a separation part provided in the hull and separating water and oil of fluid taken in and taken in from the take-in part, An upper tank is provided on the hull so that the fluid introduced and taken in from the intake section flows down naturally, and a fluid passage is formed at a lower portion of the tank. A discharge passage through which the fluid overflows at a predetermined height of the tank and which guides the fluid flowing out of the passage and discharges the fluid by natural flow from the discharge port; Sayo The upper opening area of the upper part of the upper tank is made smaller than the opening area of the general part of the tank so that the oil in the tank can float above the predetermined height to form the tank upper part; An oil outlet through which the above-mentioned floating oil can flow out by natural flow is provided at the upper part of the oil outlet.

The spilled oil recovery device of the present invention is provided on the hull, a hull floating on the water, a take-in portion for inflowing and taking in a fluid containing spilled oil attached to the hull and floating on the water surface. And a separating portion for separating water and oil of the fluid which has been taken in and taken in from the intake portion, wherein the fluid taken in and taken in from the intake portion naturally flows down through the separating portion. The tank has an upper open tank provided on the hull so as to flow in, and a fluid passage opening is formed in a lower portion of one side wall of the tank, and an upper edge facing the one side wall of the tank has an upper end edge of the tank. A water tank having a partition wall positioned at a predetermined height and connected to the tank and forming a fluid discharge passage between the one side wall and the partition wall; and a partition wall between the one side wall of the tank and the water tank. Between the top edge of The discharge port is configured as a discharge port through which the fluid flowing out of the passage port can be guided through a discharge passage so that the fluid can be naturally discharged from the discharge port into the water tank. The upper opening area of the upper part is made smaller than the opening area of the general part of the tank so that the oil in the tank can float above the predetermined height to form the upper part of the tank, and the oil floating on the upper part of the tank is formed. Has an oil outlet that can flow out by natural flow.

According to this configuration, when recovering the oil on the water surface, the fluid containing the spilled oil floating on the water surface is taken in from the intake portion. The taken-in fluid naturally flows down, flows into the tank, and accumulates. The fluid accumulated in the tank causes oil to float up and water to fall down due to the difference in specific gravity.
Then, the lower fluid is guided from the passage port to the discharge passage, and is discharged from the discharge port by natural flow. In the tank, the oil floating above the upper opening area of the tank located above the predetermined height is smaller than the general opening area of the tank so that the oil in the tank can float above the predetermined height. Since the oil is formed, the oil floats above a predetermined height, and the floated oil flows out naturally from the oil outlet. In this case, since the fluid flows down to the tank by natural flow from the inlet, the situation where water and oil are mixed and emulsified is suppressed, and therefore, separation of water and oil as little as possible in the tank is performed. Done. Therefore, the water content of the oil flowing out from the oil outlet by natural flow can be kept low. Also, since the upper opening area of the tank is formed smaller than the general opening area of the tank so that the oil in the tank can float above the predetermined height position, the specific gravity of the tank is small due to the balance. Oil floats over the narrow top. Therefore, only the oil is floated and taken out so that water is not taken out, and the oil separation efficiency is greatly improved.

And, if necessary, at the rear of the water tank,
The height of the upper edge of the partition wall is gradually reduced, and one or more water tanks are sequentially provided in the same relation as the tank and the water tank. Since water and oil can be separated even in a water tank, the separation efficiency can be further improved. In addition, if necessary, the water tank positioned at the rearmost position with respect to the tank is provided with a discharge pump for discharging the fluid in the water tank. There will always be a head drop between the tank and the water tank, and the fluid will flow down from the tank to the water tank by gravity. Further, as necessary, a return pump is provided for sucking and returning the upper fluid containing oil floating in the water tank to the tank. Since oil and water can be separated and recovered in the tank repeatedly, the separation efficiency can be further improved. Furthermore, if necessary, an oil pipeline through which oil can flow is connected to the oil outlet, and an oil storage tank is provided in which the oil pipeline communicates with the hull and the oil flowing down the oil pipeline is stored. I have. Since the oil can be stored, it is easy to recover the device by self-propelled operation.

[0010] Further, the intake section is provided with a pair of arm-shaped intake bodies for inflowing and taking in a fluid, and the pair of intake bodies is expanded in a substantially V shape so that one end of each of the intake bodies is connected to the hull. And each capturing body is provided with an arm-shaped vertical plate provided substantially vertically, and at the lower end on the front side of the vertical plate projecting substantially horizontally along the longitudinal direction and receiving fluid. A receiving plate having an intake for allowing the received fluid to flow down to the tank, and a support float for supporting both ends of the vertical plate and the receiving plate to float the vertical plate and the receiving plate on the water surface,
A climbing plate provided on the front side of the receiving plate so as to face the vertical plate and capable of climbing over the fluid from the upper end, a holding float holding both ends of the climbing plate to float the climbing plate on the water surface, A stretchable connection sheet for closing the gap between the lower end and the front end of the receiving plate and connecting the climbing plate and the receiving plate is provided. As a result, the intake body is expanded in a substantially V-shape, so that the spilled oil relatively comes into contact with the intake body and passes over the climbing board. Since there is a crossover plate, water is not taken in as much as possible, so that only the oil layer is made to go over as much as possible, and therefore, the oil taking-up efficiency becomes extremely good. Further, even if the fluid largely climbs over the overcoming plate due to a high wave or the like, since the fluid hits the vertical plate, it can be reliably received by the receiving plate.

A hanging plate is provided at the lower end of the vertical plate as required. The stability of the intake body is achieved. Further, if necessary, the support float is formed in a cylindrical shape having a space around the support float, the holding float is loosely inserted into the space of the support float, and the end wall of the support float at the end side wall of the climbing plate. A notch is provided by notching the wall in the vertical direction, and the holding float and the end of the riding-over plate are connected by a connecting rod passing through the notch, so that the floating position of the holding float is adjusted. It is configured to have a position adjusting mechanism. By adjusting the floating position of the holding float, the position of the upper end of the crossover plate with respect to the water surface can be adjusted so that water is not taken in and only the oil layer can be moved as far as possible, so that the oil take-up efficiency is further improved. Can be Further, if necessary, the hull comprises a hull main body, and a pair of buoyancy tanks provided on the left and right sides of the hull main body for floating the hull, and the intake portion is provided on the front side of the hull main body, A pair of the separating portions is provided, and each separating portion is provided on each of the left and right lower sides of the hull body. Since the separation portions are provided on the left and right sides of the hull main body, the right and left balance is good and the collection efficiency is also good.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an oil spill recovery device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 1 to 7, the basic configuration of the oil spill recovery device according to the embodiment of the present invention includes a hull 10 floating on water and an spilled oil attached to the hull 10 and floating on the water surface. An intake unit 20 for inflowing and taking in a fluid;
A separation unit 40 is provided on the hull 10 and separates water and oil of the fluid that has been taken in and taken in from the intake unit 20. The hull 10 has a floor (not shown) on which several workers can board and a roof 12 provided with a roof 12 supported on the floor, and a hull 10 provided on the left and right sides of the hull main body 11 for floating the hull 10. A pair of cylindrical buoyancy tanks 13
It is comprised including. Reference numeral 14 denotes a self-propelled screw. Although not shown, a drive unit for the screw 14, an operation unit such as a drive unit and a rudder are provided on the floor. Intake unit 2
Numeral 0 is provided on the front side of the hull main body 11, and the separating portion 40 has a front wall 41 on the front side, a rear wall 42 on the rear side, an outer wall 43 on the left and right, and a bottom wall 44 on the lower side. The whole is formed in a substantially rectangular parallelepiped shape, and a pair is provided on the left and right. Each separation unit 4
Numerals 0 are provided on the lower left and right sides of the hull body 11, respectively, so as to be lower than the water surface on which the hull 10 floats. Reference numeral 45 in FIG. 2 denotes a stabilizing plate projecting obliquely upward from the front end of the separating unit 40 and stabilizing the hull 10 in water.

The intake section 20 is provided on the front side of the hull main body 11 and has a pair of arm-shaped intake bodies 21 for inflowing and taking in fluid, and the pair of intake bodies 21 are expanded in a substantially V shape. Then, one end of each take-in body 21 is locked to the front side of the hull 10 via a universal joint 22. The left and right intake bodies 21 are provided corresponding to the left and right separation units 40, respectively. Each of the capturing bodies 21 is shown in FIGS.
As shown in FIG. 2, an arm-shaped vertical plate 2 provided substantially vertically
3 and an inlet 2 projecting substantially horizontally along the longitudinal direction at the front lower end of the vertical plate 23 to receive the fluid and to flow the received fluid to the tank 50 of the corresponding separating section 40 described later.
4, a supporting plate 26 supporting both ends of the vertical plate 23 and the receiving plate 25 to float the vertical plate 23 and the receiving plate 25 on the water surface, and a vertical plate 23 in front of the receiving plate 25. A crossover plate 27 that is provided opposite to the upper end and allows a fluid to cross over from the upper end, a holding float 28 that holds both ends of the crossover plate 27 and floats the crossover plate 27 on the water surface,
It is provided with a stretchable connection sheet 29 for closing the gap between the lower end of the riding-over plate 27 and the front end of the receiving plate 25 and connecting the riding-over plate 27 and the receiving plate 25. Vertical plate 23
A hanging plate 30 for stability is provided at the lower end of the body.

The receiving plate 25 is inclined toward the intake port 24. Further, the back surface of the intake port 24 has a projection 31 projecting in a cylindrical shape, and the projection 31 reaches the inlet pipe 47 which forms the inflow port 46 of the tank 50 of the separation unit 40 described later. Pipe 32 is connected. The support float 26 is formed in a cylindrical shape having an empty space in the center, while the holding float 28 is formed in a spherical shape.
The holding float 28 is loosely inserted into a space of the support float 26. Further, the overpassing plate 27 of the support float 26
Is provided with a notch 33 formed by cutting the wall in the vertical direction. The holding float 28 and the end of the riding-over plate 27 are connected by a connecting rod 34 passing through the notch 33. As shown in FIG. 7, the riding-over plate 27 is held by the holding float 28 at an angle of about 45 degrees from the inside to the outside and upward. A floating position adjusting mechanism 35 adjusts the floating position of the holding float 28. The floating position adjusting mechanism 35 is provided on the upper part of the holding float 28 so as to be able to move forward and backward, and is connected to the upper part of the holding float 28 by a bolt 36 which is provided on the supporting float 26 via an attachment body 37 so that the bolt 36 can be moved forward and backward. And a nut 38 to be formed. By adjusting the floating position of the holding float 28, the position of the upper end of the crossover plate 27 with respect to the water surface is adjusted so that almost all oil such as heavy oil dispersed on the seawater surface can cross over the upper end of the crossover plate 27. .

The separation section 40 will now be described with reference to one of the separation sections 40. As shown in FIGS. 1, 3 and 4, the fluid that has flowed in from the intake section 20 and flows in naturally flows down. Is provided with a tank 50 having a rectangular section with an open top provided on the front side of the hull 10 as described above. Tank 50
Is constructed by arranging one side wall 51 on the above-mentioned left and right outer walls 43, that is, the front wall 41, the front part of the left and right outer walls 43, the front part of the bottom wall 44, and the rear one side wall 51. It is comprised including. The lower part of one side wall 51 is cut off to form a fluid passage 52. The front wall 41 of the tank 50 is provided with an inlet pipe 47 that forms an inlet 46 that allows the fluid from the intake section 20 to flow into the tank 50. The inlet 46 of the inlet pipe 47 to the tank 50 is provided near a predetermined height H of the tank 50, which will be described later. The shape of the inlet pipe 47 is not limited to the illustrated elbow type, but may be a T-shaped cheese type having one opening open to the outside above the tank 50 and the other opening facing down. Since one of the ports is open to the outside air, the inflow of the fluid is performed smoothly. The lower part of one side wall 51 is cut off to form a fluid passage 52. A first water tank 53 is connected to the tank 50. The first water tank 53 includes a tank 5
A partition wall 54 facing the one side wall 51 and having an upper edge 54a positioned at a predetermined height H from the bottom wall 44 of the tank 50 is provided on the left and right outer walls 43, and one side wall 55 is provided on the rear side. And one side wall 51 and a partition wall 54 of the tank 50.
To form a fluid discharge passage 56. That is, between the one side wall 51 of the tank 50 and the upper edge of the partition wall 54 of the first water tank 53, the discharge port 5 through which the fluid can overflow is provided.
The fluid flowing out of the passage 52 is guided through the discharge passage 56 so as to be discharged from the outlet 57 into the first water tank 53 by natural flow.

Further, the upper portion 50a of the tank 50 located above the predetermined height H is provided with a general opening of the tank 50 such that the upper opening area Sa can allow oil in the tank 50 to float above the predetermined height H position. It is formed smaller than the partial opening area Sb. More specifically, the upper side of one side wall 51 is formed by an inclined plate 58 that rises inclining to the front side and a rectangular plate 59 that rises at a right angle from the upper end of the inclined plate 58, and the space between the front wall 41 and the rectangular plate 59 is generally formed. It is formed narrower than the part. What is important here is that the upper opening area Sa is formed smaller than the general opening area Sb of the tank 50 so that the oil in the tank 50 can float above the predetermined height H. This allows
In general, when the fluid is one liquid, the liquid level on the tank 50 side becomes the predetermined height H of the discharge port 57 from which the fluid overflows. However, when the two liquids having different specific gravities are separated, the liquid level is small due to the balance. The liquid having a specific gravity floats on the upper portion 50a having a small area on the tank 50 side.

The partition wall 6 is located behind the first water tank 53.
The second water tank 60 and the third water tank 70 are sequentially provided in the same relation as the tank 50 and the first water tank 53, in which the heights of the upper edges 61a and 71a of the first and the first water tanks 71 and 71 are gradually reduced. Specifically, the lower part of one side wall 55 of the first water tank 53 is cut off to form a fluid passage 62, and the second water tank 6
0 is an upper edge 61a facing one side wall 55 of the first water tank 53;
Is formed by extending the partition wall 61 having a height lower than the predetermined height H on the left and right outer walls 43 and extending the one side wall 63 on the rear side. A fluid discharge passage 64 is formed therebetween. That is, the first water tank 5
Between the one side wall 55 and the upper end edge 61a of the partition wall 61 of the second water tank 60, the discharge port 6 through which fluid can overflow.
The fluid flowing out of the passage 62 is guided through the discharge passage 64 and can be naturally discharged from the outlet 65 into the second water tank 60.

Similarly, one side wall 63 of the second water tank 60 is provided.
Is cut off to form a fluid passage 72, and the third water tank 70 faces one side wall 63 of the second water tank 60 and the upper edge 71a is lower than the partition wall 61 of the second water tank 60. 71 is formed on the left and right outer walls 43 described above, and one side wall 73 is formed on the rear side. A fluid discharge passage 74 is formed between the one side wall 63 of the second water tank 60 and the partition wall 71. ing. That is, the space between the one side wall 63 of the second water tank 60 and the upper edge 71a of the partition wall 71 of the third water tank 70 is formed as a discharge port 75 through which the fluid can overflow, and the fluid flowing out of the passage port 72 is discharged. It is configured to be guided through the discharge passage 74 and discharged into the third water tank 70 from the discharge port 75 by natural flow. The third water tank 70 located at the rearmost position with respect to the tank 50 is provided with a discharge pump 76 for discharging the fluid in the third water tank 70. Reference numeral 77 denotes a discharge pipe through which a fluid discharged from the discharge pump 76 flows, and an outlet thereof is provided so as to protrude outside through the rear wall 42. Also, the upper part 50a containing the oil floating on the first water tank 53
A return pump 80 is provided to suck the fluid into the tank 50 and return it. 81 is a return line connected to the return pump. Further, the second water tank 60 is provided with an aeration device 66. The aeration device 66 includes an air diffuser 67 that jets air into the bottom of the second water tank 60 in a foamy manner.
The inclined plates 68 are alternately protruded from the wall of the water tank, and the oil water emulsified by the air jetted from the air diffuser 67 is raised while transmitting the inclined plates 68. The raised oily water is manually removed by, for example, an adsorption mat (not shown). Furthermore, the third water tank 7
At 0, an adsorbent 77 that adsorbs fine oil is held in a perforated tray 76. In addition, a roll-type oil absorbing device (not shown) called a so-called oil catcher is incorporated to complete the removal of oil.

Further, an oil outlet 90 through which the floating oil can flow out by natural flow is provided in the upper portion 50a of the tank 50. As shown in FIG. 4, the oil outlet 90 is formed in a gutter shape and protrudes into the tank 50. The oil outlet 90 is connected to an oil pipe 91 through which oil can flow.
The hull 10 is provided with an oil storage tank 92 in which an oil pipeline 91 communicates and stores oil flowing down the oil pipeline 91. The oil storage tank 92 is provided on one side wall 73 on the rear side of the third water tank 70,
It is formed by a rear wall 42, left and right outer walls 43, and a bottom wall 44. The oil pipeline 91 is provided along the inner surface of the inner outer wall 43. The oil storage tank 92 includes an oil storage tank 9.
A feed pump 93 for feeding the oil in the tank 2 to a transport ship or the like is provided.

Therefore, when the oil on the water surface is to be recovered by the oil spill recovery device according to this embodiment, the screw 14 of the oil spill recovery device is driven to gently advance. Thereby, the fluid containing the spilled oil floating on the water surface is taken in by the intake unit 20. In this case, since the intake body 21 is expanded in a substantially V shape, the spilled oil relatively contacts the intake body 21 and
Overcoming. Since the height of the crossover plate 27 is adjusted at the floating position of the holding float 28, it is possible to adjust so as not to take in water and to move over only the oil layer as much as possible, so that the oil taking efficiency is extremely good. . Further, even if the fluid largely climbs over the overcoming plate 27 due to a high wave or the like, since the fluid hits the vertical plate 23, the fluid can be reliably received by the receiving plate 25. The fluid that has passed over the climbing plate 27 naturally flows down from the intake port 24 of the receiving plate 25 through the pipe 32, and flows into the tank 50 from the inlet 46 of the inlet pipe 47.

In the fluid stored in the tank 50, the oil floats up and the water falls down due to the difference in specific gravity. And
The lower fluid is guided from the passage port 52 to the discharge passage 56, and is discharged from the discharge port 57 into the first water tank 53 by natural flow. Similarly, in the first water tank 53, the oil floats up and the water comes down due to the difference in specific gravity, and the lower fluid is guided from the passage port 62 to the discharge passage 64 and naturally flows down from the discharge port 65. The water is discharged into the second water tank 60. Further, also in the second water tank 60, the lower fluid is guided from the passage port 72 to the discharge passage 74, and is discharged into the third water tank 70 by natural flow from the discharge port 75. In the third water tank 70, the pump 7
The fluid is discharged to the outside by 6. Therefore, always
Since a head is formed between the second water tank 60 and the third water tank 70, the fluid flows down from the tank 50 to each of the water tanks 53, 60, 70 by natural flow.

In this state, in the tank 50, due to the difference in specific gravity, the oil floats upward and the water falls, but the oil floating above the tank 50 is located above the predetermined height H. The upper opening area Sa of the upper part 50a of the tank 50 is formed smaller than the general opening area Sb of the tank 50 so that the oil in the tank 50 can float above the predetermined height H. The oil floating above H flows out from the oil outlet 90 by natural flow, and is stored in an oil storage tank 92 through an oil pipe 91. In this case, the fluid flows down from the inflow port 46 to the tank 50 by natural flow, so that the situation where water and oil are mixed and emulsified is suppressed, and therefore, water and oil are not mixed as much as possible in the tank 50. It is performed as follows.
Therefore, the water content of the oil flowing out from the oil outlet 90 by natural flow can be kept low. In addition, tank 5
0 is formed smaller than the general opening area Sb of the tank 50 so that the oil in the tank 50 can float above the predetermined height H, so that the balance relation Oil of small specific gravity is used for the upper 50
Surface a. Therefore, only the oil is floated and taken out so that water is not taken out, and the oil separation efficiency is greatly improved.

Next, in the first water tank 53, the oil floats up and the water comes down due to the difference in specific gravity.
Then, the return pump 80 is operating and the upper part 50a is
The fluid is returned to the tank 50 for separation in the tank 50. Therefore, separation of water and oil is further promoted. Next, in the second water tank 60, the oil water emulsified by the air injected from the air diffuser 67 rises along the inclined plate 68 by the aeration device 66, and is stored at the upper portion. This raised oil and water
Since the amount is relatively small, it may be removed manually with a suction mat or the like in a timely manner. In addition, the fluid that has reached the third water tank 70 is purified because the adsorbent that adsorbs fine oil is contained in the third water tank 70, so that the oil is almost completely absorbed and purified. Then, the water is discharged by the discharge pump 76. In this case, since most of the oil has been removed, it is returned as water.

In the above embodiment, the tank 50
The way of narrowing the upper part 50a is not limited to that described above. For example, as shown in FIG. 8, the upper part 50a may be narrowed in a funnel shape, and may be changed as appropriate. The tank 50
Although the water tank 53 is provided continuously, the drainage passage 56 may be constituted by a pipe 95 as shown in FIG. 9 and may be appropriately changed. Also,
The position of the inflow port 46 is not limited to the above-described position, and may be set to any position. Furthermore, the structure of the intake unit 20 is not limited to the above-described one, and any structure may be used as long as the structure allows the natural flow into the tank 50.
In addition, it goes without saying that the present device may be of any size, from a small one with a total length of about 2 to 3 m to a large one with a total length of 30 m or more.

[0025]

As described above, according to the oil spill recovery system of the present invention, the fluid introduced into the tank from the intake section is provided on the hull so as to flow down naturally and flow in. Flows down to the tank by natural flow, so that the situation where water and oil are mixed and emulsified can be suppressed, and the separation in the tank can be performed while minimizing the mixing of water and oil. . As a result, the water content of the oil flowing out from the oil outlet by natural flow can be kept low, the separation efficiency can be greatly improved, and the subsequent processing can be facilitated. Also, since the upper opening area of the tank is formed smaller than the opening area of the general part of the tank so that the oil in the tank can float above a predetermined height, the oil having a small specific gravity is used for the upper part having a small area due to the balance. As a result, only the oil is floated and taken out so that water is not taken out, so that the oil separation efficiency can be greatly improved.

Further, when a water tank is sequentially connected to the rear of the tank, water and oil can be separated in the water tank, so that the separation efficiency can be further improved. Furthermore, when a discharge pump for discharging the fluid in the water tank is provided in the water tank located at the rearmost position, a head can always be formed between the tank and the water tank, and the fluid is transferred from the tank to the water tank. It can flow down by natural flow. In addition, when a return pump that sucks and returns the upper fluid containing oil floating in the water tank to the tank is provided, oil and water can be separated and collected in the tank repeatedly, so that the separation efficiency can be further improved. it can. In addition, if an oil pipe through which oil can flow is connected to the oil outlet, and an oil storage tank is provided in the hull where the oil pipe communicates and the oil flowing down the oil pipe is provided, the oil is stored. Therefore, it is easy to recover the apparatus by self-propelled.

Further, the intake section is provided with a pair of arm-shaped intake bodies for inflowing and taking in a fluid, and the pair of intake bodies are formed to be expanded in a substantially V-shape, so as to get over the climbing board of each intake body. When the fluid is taken in, it is possible to take in the oil layer as much as possible without taking in water as much as possible, and it is possible to make the oil taking efficiency extremely good. Further, when the hanging plate is provided at the lower end of the vertical plate, the take-in body is stabilized. Furthermore, when a floating position adjusting mechanism for adjusting the floating position of the holding float is provided, by adjusting the floating position of the holding float, the position of the upper end of the climbing plate with respect to the water surface is adjusted to take in more water as much as possible. It is possible to avoid the oil layer as much as possible so that the oil intake efficiency can be made extremely good. When a pair of separating portions is provided and each separating portion is provided on the lower left and right sides of the hull main body, there is an effect that the balance between the left and right is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an oil spill recovery device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an oil spill recovery device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a main part of a separation unit of the oil spill recovery device according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a main part of a separation unit of the oil spill recovery device according to the embodiment of the present invention.

FIG. 5 is a perspective view showing an intake body of an intake unit of the oil spill recovery device according to the embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a capturing body of a capturing section of the oil spill recovery device according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a capturing body of a capturing unit of the oil spill recovery device according to the embodiment of the present invention.

FIG. 8 is a sectional view showing a modified example of the tank of the oil spill recovery device according to the embodiment of the present invention.

FIG. 9 is a sectional view showing a modified example of the discharge passage of the tank of the oil spill recovery device according to the embodiment of the present invention.

FIG. 10 is a sectional view showing an example of a conventional oil spill recovery device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Hull 11 Hull body 13 Buoyancy tank 20 Intake part 21 Intake body 23 Vertical plate 24 Intake port 25 Receiving plate 26 Support float 27 Riding plate 28 Holding float 29 Connection sheet 30 Hanging plate 35 Floating position adjustment mechanism 40 Separation part 41 Front wall 42 Rear wall 43 Outer side wall 44 Bottom wall 45 Stabilizer 46 Inflow port 47 Inlet pipe 50 Tank 50a Top 51 One side wall 52 Passage port 53 First water tank 54 Partition wall 55 One side wall 56 Discharge passage 57 Discharge port H Predetermined height Sa Top opening Area Sb General opening area 58 Inclined plate 59 Right angle plate 60 Second water tank 70 Third water tank 76 Drain pump 80 Return pump 90 Oil outlet 91 Oil pipeline 92 Oil storage tank 93 Feed pump

Claims (10)

(57) [Claims] 1. A hull floating on water, a take-in section for taking in fluid which is attached to the hull and containing spilled oil floating on the water surface, and a take-in section provided in the hull and taken in from the take-in section. An oil spill recovery device comprising a separation unit for separating water and oil of the collected fluid, wherein the separation unit is provided on the hull such that fluid taken in from the intake unit flows down naturally. The tank is provided with an upper open tank provided, a fluid passage is formed at a lower portion of the tank, and a discharge port is provided which communicates with the passage and through which fluid can overflow at a predetermined height of the tank. A discharge passage is provided for guiding the fluid flowing out from the passage port and discharging from the discharge port by natural flow, and the oil in the tank increases the upper opening area of the tank located above the predetermined height. High The upper portion of the tank is formed so as to be smaller than the opening area of the general portion of the tank so as to be able to float more, and an oil outlet through which the floating oil can flow out by natural flow is provided at the upper portion of the tank. And oil spill recovery equipment. 2. A hull floating on water, a take-in portion for taking in fluid which is attached to the hull and including spilled oil floating on the water surface, and a take-in portion provided in the hull and taken in from the take-in portion. An oil spill recovery device having a separation unit for separating water and oil of the collected fluid, wherein the separation unit is provided on the hull such that the fluid introduced from the intake unit and taken in flows down naturally. A tank through which a fluid passage is formed at a lower portion of one side wall of the tank, and a partition wall facing the one side wall of the tank and having an upper edge located at a predetermined height of the tank. A water tank is provided which is connected to the tank and forms a fluid discharge passage between the one side wall and the partition wall.Fluid flows between one side wall of the tank and an upper edge of the partition wall of the water tank. The outlet that can overflow The fluid flowing out of the passage is guided through a discharge passage so that the fluid can be discharged into the water tank by natural flow from the discharge port, and the upper opening area of the upper portion of the tank positioned higher than the predetermined height is adjusted by the tank. The upper portion of the tank is formed so as to be smaller than the opening area of the general portion of the tank so that the oil in the tank can float above the predetermined height, and the oil that floats on the upper portion of the tank can flow out by gravity. An oil spill recovery device having an outlet. 3. The method according to claim 1, wherein one or two or more water tanks are provided at the rear of the water tank, the height of the upper edge of the partition wall being gradually reduced, and the tank and the water tank being sequentially connected in the same relationship. The spilled oil recovery device according to claim 2, characterized in that: 4. The oil spill recovery device according to claim 2, wherein a discharge pump for discharging a fluid in the water tank is provided in a water tank positioned at the rearmost position with respect to the tank. 5. The oil spill recovery device according to claim 2, further comprising a return pump for sucking and returning an upper fluid containing oil floating in the water tank to the tank. 6. The oil outlet is connected to an oil line through which oil can flow, and an oil storage tank is provided for storing the oil flowing down the oil line with the oil line communicating with the hull. The spilled oil recovery device according to claim 1, 2, 3, 4, or 5. 7. The intake section includes a pair of arm-shaped intake bodies for inflowing and inflowing a fluid, and the pair of intake bodies are expanded in a substantially V shape so that one end of each of the intake bodies is connected to the hull. And each capturing body is provided with an arm-shaped vertical plate provided substantially vertically, and at the lower end on the front side of the vertical plate projecting substantially horizontally along the longitudinal direction and receiving fluid. A receiving plate having an inlet through which the received fluid flows down to the tank; a support float for supporting both ends of the vertical plate and the receiving plate to float the vertical plate and the receiving plate on the water surface; and a front side of the receiving plate. A lifting plate provided opposite to the vertical plate and capable of passing a fluid from the upper end, a holding float for holding both ends of the lifting plate to float the lifting plate on the water surface, and a lower end of the lifting plate and a receiving plate. Cover the gap between the front ends and And a telescopic connecting sheet for connecting the receiving plate and the receiving plate.
The spilled oil recovery device according to 2, 3, 4, 5, or 6. 8. The oil spill recovery device according to claim 7, wherein a hanging plate is suspended from a lower end of the vertical plate. 9. The support float is formed in a cylindrical shape having a space centered on the support float, the holding float is loosely inserted into the space of the support float, and the holding float is attached to an end side wall portion of the crossover plate of the support float. A notch portion in which a wall portion is cut out in a vertical direction is provided, and the holding float and an end of the riding-over plate are connected by a connecting rod passing through the notch portion, and a floating position for adjusting a floating position of the holding float. 9. The spilled oil recovery device according to claim 7, further comprising an adjusting mechanism. 10. The hull includes a hull main body, and a pair of buoyancy tanks provided on left and right sides of the hull main body for floating the hull, wherein the intake unit is provided on a front side of the hull main body, 10. The oil spill recovery according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 wherein a pair of separating portions are provided, and each separating portion is provided on the lower left and right sides of the hull body. apparatus.