GB2096478A - Collecting device for gathering drifting oil - Google Patents
Collecting device for gathering drifting oil Download PDFInfo
- Publication number
- GB2096478A GB2096478A GB8111866A GB8111866A GB2096478A GB 2096478 A GB2096478 A GB 2096478A GB 8111866 A GB8111866 A GB 8111866A GB 8111866 A GB8111866 A GB 8111866A GB 2096478 A GB2096478 A GB 2096478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- collecting device
- floats
- frame structures
- gathering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 235000019198 oils Nutrition 0.000 claims abstract description 38
- 235000019476 oil-water mixture Nutrition 0.000 claims abstract description 5
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 241000238634 Libellulidae Species 0.000 description 5
- 239000013535 sea water Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UPLPHRJJTCUQAY-WIRWPRASSA-N 2,3-thioepoxy madol Chemical compound C([C@@H]1CC2)[C@@H]3S[C@@H]3C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@](C)(O)[C@@]2(C)CC1 UPLPHRJJTCUQAY-WIRWPRASSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/048—Oil collectors moved over the water skimming the water surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
An oil collecting device for gathering drifting oil from the surface of the sea comprises a row of adjacent and partially submergible frame structures of A-shape (Fig. 1 not shown) and floats 2, supported by rollers 6, 9 to run up and down the frames with the motion of the waves. Each float 2 has on its underside a channel having an inlet 7 which skims an oil-water mixture from the sea surface and leads the mixture to an outlet 8 whence it passes into a discharge channel 10 and thence to a manifold 14 and is pumped away for separation. The outlet 8 travels along a slot in the discharge channel 10, the slot being covered by a flexible strip 13. The device may be located adjacent to a drilling platform and the oil slick otherwise enclosed by booms (Fig. 5 not shown). <IMAGE>
Description
SPECIFICATION
Collecting device for gathering drifting oil
The present invention relates to a collecting device for gathering drifting oil from a sea surface.
In case of uncontrolled blow-outs at offshore plants, release of oil from ships into the sea or leakage of oil from storage tanks ashore it is a matter of vital importance to collect the oil from the sea surface soon enough to prevent havoc.
In a well-known procedure for removing drifting oil from sea water, the oil is encircled by means of floating booms, priorto pumping into storage tanks.
Another well-known method of collecting such oil involves the use of so-called skimmers. There are different types of skimmers, including rotational skimmers and belt skimmers; they all operate by utilizing the adhesive effect arising between oil and steel during collection ofthe drifting oil.
It is a disadvantage connected with use of floating booms and skimmers, that the actual wave height is not allowed to exceed 2.5 metres. However in the
North Sea for example wave heights of 4.5 metres are encountered during half a year and over 6 metres during periods of 30% of a year.
It is another disadvantage connected with the known methods for collecting of oil from sea water, that utilization of such methods is often restricted in view of the risks of explosions being caused by gas clouds frequently occurring during uncontrolled blow-outs at offshore plants.
it is another disadvantage connected with existing methods for collecting oil from sea water, that such methods can hardly be practised after dark.
The object of the present invention is to provide an oil collecting device wherein the above mentioned drawbacks are obviated.
According to the present invention this is attained by the provision of features as indicated in the appended claims.
For further understanding of the present invention, reference should be had to the following detailed description, taken in conjunction with the accompanying drawings wherein:
Fig.1 is a side view of a collecting device according to the present invention for gathering drifting oil from a sea surface, showing the collecting device in a semisubmerged position;
Fig.2 is a cross-sectional side view depicting a part of the collector frame structure, including a float and a discharge channel;
Fig.3 is a cross-section along section line A-A of fig.2;
Fig.4 is a cross-section along section line B-B of fig.3; and
Fig.5 is a schematic plan view showing a collecting device according to the present invention in a position during an uncontrolled blow-out in offshore waters.
Referring to the drawings, numeral 1 indicates one of a continuous row of adjacent A-fra me structures provided with shiftably supported floats 2. The frame structures float partly submerged in the sea and some of them include pivotable pontoons 3 and stabilizers 4. Oil 5 is shown drifting on the sea surface. The floats 2 are shiftably supported on frame structures 1 by means of rollers 6, and provided at their undersides with two channels providing respectively two inlet openings 7 and two semicircular outlet openings 8. Floats 2 are connected to rollers 9 adjacant to the outlet openings 8, said rollers assisting the guidance of the floats 2 as they shift in the frame 1. A discharge channel 10 in the frame 1 is provided with two slots 11, 12 which are covered by a flexible strip 13. The outlets 8 open into the discharge channel 10, passing beneath the strip 13.Discharge channel 10 leads into substantially horizontally manifold 14.
Figure 5 shows the row or array of frames 1 forming the collecting device 16 of this invention con necked to a pair of supply vessels 17 by cables 18, and positioned near an oil platform 19. Separator units 20 for separating water from oil before pumping the oil to a tanker 21, are mounted on board the supply vessels 17. Floating booms secure that all of the drifting oil will be led towards the oil collector 16.
Oil collector 16 is kept in position near the site of an uncontrolled blow-out by means of the supply vessels 17 or anchors (not shown). Due to wind action, waves and the tendency ofthe oil to spread over the sea surface oil 5 will drift towards the oil collector 16 at a sufficient speed to stream into the inlet openings 7 at the underside of floats 2 (the spreading rate of oil on water 6mounting to 3-4% of wind velocity). Inlet openings 7 are adapted to "plane" or skim an oil-water mixture from the sea surface, for subsequent transference through said outlet openings 8 to discharge channel 10. Fluid within discharge channel 10 will always remain art a lower level than the lowermost part of encountering waves.The oil-water mixture passes through discharge channel 10 into manifold 14 from whence it is pumped to one or more separator units 20 on board the supply vessels 17.
The floats 2 are built with a flat bottom and provided with roller 9 adjacent to the outlet opening 8, so that the floats 2 will easily shift along discharge channels 10 to follow the motion of the waves. The exterior of slots 11, 12 is covered by the flexible strip 13, e.g. of rubber, thereby preventing intrusion of sea water into said slots 11, 12 and the discharge channel 10. Strip 13 is attached along its centre line to discharge channel 10 by means of a plurality of bolts 15, and held in position, covering slits 11, 12 by hydrostatic pressure from sea water.
When the floats 2 are rising and falling between the frame structures 1 under the influence of wave action, the flexible strip 13 will adapt to the outlet openings 8 and rollers 9 of the floats 2, thereby allowing free admission of oil-water mixture to discharge channel 10. The floats 2, to the number of 20-20, having an appropriate width of 1.5- 2 metres, are acting independently between frame structures 1 under influence of wave action.
Some of the frame structures 1 are pivotally connected to pontoons 3, so that the oil collecting device 16 can be towed in a lengthwise direction.
By use of an oil collecting device according to the present invention the detrimental effects resulting from drifting oil in the sea will be neutralized in an efficient way independent of wave heights, gas clouds and dark.
Claims (5)
1. An oil collecting device for gathering drifting oil from a sea surface, comprising a continuous array of adjacent and partially submergible frame structures which shiftably support floats each having inlet openings and outlet openings leading to discharge channels within said frame structures, and a manifold connecting the discharge channels.
2. An oil collecting device according to claim 1, wherein each of said frame structures is A-shaped, and wherein some of the frame structures are provided with pivotable pontoons and stabilizers.
3. An oil collecting devide according to claim 2, wherein said floats are formed with a substantially flat bottom, the underside of the trailing part of said floats is provided with two downwardly projecting inlet openings adapted to skim an oil-water mixture from the sea surface, said inlet openings communicate via channels in said floats with semicircular outlet openings adjacent to rotatably supported rollers, and said outlet openings lead into discharge chan nelsthrough a pair of slots.
4. An oil collecting device according to claim 3, wherein said slots in the discharge channels are covered by a flexible strip, e.g. of rubber.
5. An oil collecting device for gathering drifting oil from a sea surface, substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8111866A GB2096478A (en) | 1981-04-14 | 1981-04-14 | Collecting device for gathering drifting oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8111866A GB2096478A (en) | 1981-04-14 | 1981-04-14 | Collecting device for gathering drifting oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2096478A true GB2096478A (en) | 1982-10-20 |
Family
ID=10521173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8111866A Withdrawn GB2096478A (en) | 1981-04-14 | 1981-04-14 | Collecting device for gathering drifting oil |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2096478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295577A (en) * | 2019-07-19 | 2019-10-01 | 湖南机电职业技术学院 | A kind of ocean garbage cleaning device |
-
1981
- 1981-04-14 GB GB8111866A patent/GB2096478A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295577A (en) * | 2019-07-19 | 2019-10-01 | 湖南机电职业技术学院 | A kind of ocean garbage cleaning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |