GB2162130A - Apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of bulk carrier - Google Patents
Apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of bulk carrier Download PDFInfo
- Publication number
- GB2162130A GB2162130A GB08514226A GB8514226A GB2162130A GB 2162130 A GB2162130 A GB 2162130A GB 08514226 A GB08514226 A GB 08514226A GB 8514226 A GB8514226 A GB 8514226A GB 2162130 A GB2162130 A GB 2162130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cleaning water
- waste cleaning
- main
- discharge pipe
- holds
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B57/00—Tank or cargo hold cleaning specially adapted for vessels
- B63B57/02—Tank or cargo hold cleaning specially adapted for vessels by washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Cleaning In General (AREA)
- Jet Pumps And Other Pumps (AREA)
- Detergent Compositions (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
An apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier, which comprises: a bilge well (8) on the bottom of each of the plurality of holds (9); a plurality of sub-ejectors (13) below each of the plurality of holds (9), for sucking up waste cleaning water from each of the plurality of bilge wells (8); a main waste cleaning water discharge pipe (15) for collecting the waste cleaning water sucked up by the plurality of sub-ejectors (13); a main ejector (16) for sucking up the waste cleaning water flowing through the main waste cleaning water discharge pipe (15) to discharge same to outside the ship; and a liaison pipe (24) between an upstream end of the pipe (15) and a main ballast water supply pipe (2), for introducing part of ballast water into the main waste cleaning water discharge pipe (15) through the main ballast water supply pipe (2) to increase the flow velocity of waste cleaning water flowing through the main waste cleaning water discharge pipe (15). <IMAGE>
Description
SPECIFICATION
Apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of bulk carrier
The present invention relates to an apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier, which permits prevention of precipitation of remains contained in waste cleaning water after cleaning the plurality of holds and flowing through a main waste cleaning water discharge pipe onto the bottom of the main waste cleaning water discharge pipe.
In a bulk carrier for transporting bulk cargo such as ore, coal, steel scrap or cereals, holds are cleaned with sea water and the like after unloading bulk cargo from the holds. Waste cleaning water after cleaning the holds contains a considerable amount of remains such as ore particles, coal particles or small pieces of steel scrap.
A first conventional apparatus for discharging to outside the ship waste cleaning water after cleaning a plurality of holds and containing a considerable amount of remains is described below with reference to drawings.
Figure 1 is a schematic plan view illustrating the first conventional apparatus,
Figure 2 is a partially cutaway view of the first conventional apparatus, and
Figure 3 is a schematic sectional view of Fig. 2 cut along the line A-A.
As shown in Figs. 1 to 3, a main ballast water supply pipe 2 having a main valve 3 introduces
ballast water through a plurality of branch pipes 5
having respective sub-valves 4, connected to the
main ballast water supply pipe 2, into a plurality of
ballast tanks 1 provided in a double bottom of the ship. A main pump 6 supplies ballast water sucked
up from a ballast water suction port 7 thereof into the plurality of ballast tanks 1 through the main
ballast water supply pipe 2 and the plurality of
branch pipes 5, and also supplies ballast water thus sucked up as driving water to a nozzle of a
main ejector described later.
A plurality of bilge wells 8 are provided two each
on the bottom 9A of each of a plurality of holds 9.
Waste cleaning water 11 after cleaning each of the
plurality of holds 9 and containing a considerable
amount of remains 10 such as ore particles, coal
particles or small pieces of steel scrap, flows
through each of openings 12 provided two each on
the bottom 9A of each of the plurality of holds 9
into the respective bilge wells 8 and is stored
therein.
A plurality of sub-ejectors 13 for sucking up
waste cleaning water stored in the plurality of bilge
wells 8 are provided two each below each of the
plurality of holds 9. A port 13A of each of the plu
rality of sub-ejectors 13 is connected to a lower
portion of each of the plurality of bilge wells 8, and
a discharge port 13B of each of the plurality of
sub-ejectors 13 is connected to a main waste
cleaning water discharge pipe described later.
Waste cleaning water 11 stored in each of the plurality of bilge wells 8 is sucked up from the suction port 13A of each of the plurality of sub-ejectors 13 under the effect of driving water ejected at a high velocity from the tip of a nozzle 14 of each of the plurality of sub-ejectors 13, and discharge from the discharge port 13B of each of the plurality of subejectors 13 into the main waste cleaning water discharge pipe.
The above-mentioned main waste cleaning water discharge pipe 15 collects waste cleaning water 11 sucked up by each of the plurality of sub-ejectors 13 and flows the thus collected waste cleaning water 11 toward an exit end 15A of the main waste cleaning water discharge pipe 15.
The above-mentioned main ejector 16 sucks up waste cleaning water flowing through the main waste cleaning water discharge pipe 15 to discharge same to outside the ship. A suction port 16A of the main ejector 16 is connected through a main valve 17 to the exit port 15A of the main waste cleaning water discharge pipe 15, and the main ejector 16 has a discharge port 16B for discharging waste cleaning water to outside the ship.
A nozzle 18 of the main ejector 16 is connected to the main pump 6 through a driving water supply pipe 20 having a valve 19. Waste cleaning water 11 flowing through the main waste cleaning water discharge pipe 15 is sucked up from the suction port 16A of the main ejector 16 under the effect of driving water ejected at a high velocity by the main pump 6 from the tip of the nozzle 18 of the main eject6r 16, and discharged to outside the ship from the discharge port 16B of the main ejector 16.
In the above-mentioned first conventional apparatus, ballast water is supplied into the plurality of ballast tanks 1 as follows: The valve 19 of the driving water supply pipe 20 is closed, while the main valve 3 of the main ballast water supply pipe 2 and the sub-valve 4 of each of the plurality of branch pipes 5 connected to the main ballast water supply pipe 2 are opened, and the main pump 6 is actuated. Thus, ballast water sucked up from the ballast water suction port 7 of the main pump 6 is supplied into the plurality of ballast tanks 1 through the main ballast water supply pipe 2 and the respective branch pipes 5.
According to the above-mentioned first conventional apparatus, waste cleaning water after cleaning the plurality of holds 9 and containing a considerable amount of remains 10 is discharged to outside the ship as follows: Driving water is supplied to the nozzle 14 of each of the plurality of sub-ejectors 13 by means of another pump (not shown) to suck up waste cleaning water 11 containing remains 10, which is stored in each of the
plurality of bilge wells 8, to discharge the thus
sucked-up waste cleaning water into the main waste cleaning water discharge pipe 15. On the
other hand, the main valve 3 of the main ballast water supply pipe 2 is closed, while the valve 19 of the driving water supply pipe 20 and the main valve 17 of the main waste cleaning water dis
charge pipe 15 are opened, and the main pump 6
is actuated.As a result, ballast water sucked up from the ballast water suction port 7 of the main pump 6 is supplied, as driving water, to the nozzle 18 of the main ejector 16 through the driving water supply pipe 20. Thus, waste cleaning water 11 collected into the main waste cleaning water discharge pipe 15 by means of the plurality of subejectors 13 is discharged to outside the ship by means of the main ejector 16 from the discharge port 16B thereof under the effect of driving water ejected at a high velocity from the tip of the nozzle 18 of the main ejector 16.
However, the above-mentioned first conventional apparatus has the following problems: Each of the plurality of sub-ejectors 13 provides the advantage of not being susceptible to malfunction because of the simple structure and the absence of rotating parts. Each of the plurality of sub-ejectors 13 can however suck up only part of remains 10 contained in waste cleaning water 11, which precipitate on the bottom of each of the plurality of bilge wells 8 because of the lower suction force as compared with an ordinary pump. Furthermore, remains 10 sucked up by the plurality of sub-ejectors 13 precipitate on the bottom of the main waste cleaning water discharge pipe 15, thus clogging up the main waste cleaning water discharge pipe 15, which may make it impossible to discharge waste cleaning water 11 to outside the ship.
Now, a second conventional apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier is described below with reference to a drawing.
Figure 4 is a partially cutaway sectional view illustrating the second conventional apparatus.
As shown in Fig. 4, a plurality of bilge wells 8 are provided, as in the above-mentioned first conventional apparatus, two each on the bottom 9A of each of a plurality of holds 9. A plurality of hoppers 21 are provided one each in each of the plurality of bilge wells 8. Each of the plurality of hoppers 21 is vertically fixed below each of two openings 12 provided on the bottom 9A of each of the plurality of holds 9. A lower opening of each of the plurality of hoppers 21 faces a discharge port 8A provided on the bottom of each of the plurality of bilge wells 8.
A plurality of sub-ejectors 13 for sucking up waste cleaning water stored in the plurality of bilge wells 8 are provided two each below each of the plurality of holds 9. A port 13A of each of the plurality of sub-ejectors 13 is connected to the discharge port 8A of each of the plurality of bilge wells 8, and a discharge port 13B of each of the p!urality of sub-ejectors 13 is connected to a main waste cleaning water discharge pipe 15. A nozzle 14 of each of the plurality of sub-ejectors 13 is connected to the suction port 13A of each of the plurality of sub-ejectors 13 through a branch pipe 22.
Driving water supplied to the nozzle 14 of each of the plurality of sub- ejectors 13 is ejected at a high velocity from the tip of the nozzle 14, and at the same time, part of driving water is ejected, through the branch pipe 22, into waste cleaning water 11 sucked up from the suction port 13A in the same direction as that of the flow of waste cleaning water 11. The other structures of the second conventional apparatus are the same as those of the above-mentioned first conventional apparatus.
In the above-mentioned second conventional apparatus, waste cleaning water 11 after cleaning the plurality of holds 9 and containing remains 10 flows into the hopper 21 through each of openings 12 provided two each on the bottom 9A of each of the plurality of holds 9. As described above, since the lower opening of each of the plurality of hoppers 21 faces the discharge port 8A of each of the plurality of bilge wells 8, remains 10 contained in waste cleaning water 11 flow from each of the plurality of hoppers 21 directly into the suction port 13A of each of the plurality of sub-ejectors 13.Under the effect of driving water ejected at a high velocity from the tip of the nozzle 14 of each of the plurality of sub-ejectors 13, waste cleaning water 11 containing remains 10 is sucked up from the suction port 13A of each of the plurality of subejectors 13, and discharge from the discharge port 13B of each of the plurality of sub-ejectors 13 into the main waste cleaning water discharge pipe 15.
As described above, part of driving water supplied to the nozzle 14 of each of the plurality of sub-ejectors 13 is ejected, through the branch pipe 22, into waste cleaning water 11 sucked up from the suction port 13A in the same direction as that of the flow of waste cleaning water 11. As a result, waste cleaning water 11 is discharged into the main waste cleaning water discharge pipe 15 from the discharge port 138 of each of the plurality of subejectors 13 without remains 10 contained in waste cleaning water 11 causing clogging of the suction port 13A of each of the plurality of sub-ejectors 13.
In addition, since remains 10 contained in waste cleaning water 11 flow from each of the plurality of hoppers 21 directly into the suction port 13A of each of the plurality of sub-ejectors 13, remains 10 are substantially totally sucked up by each of the plurality of sub- ejectors 13 without precipitation onto the bottom of each of the plurality of bilge wells 8.
However, the above-mentioned second conventional apparatus has the following problems: Remains 10 contained in waste cleaning water 11 after cleaning the plurality of holds 9 precipitate onto the bottom of the main waste cleaning water discharge pipe 15, thus clogging up the main waste cleaning water discharge pipe 15, which may make it impossible to discharge waste cleaning water 11 to outside the ship.
Under such circumstances, there is a demand for the development of an apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier, which permits prevention of precipitation of remains contained in waste cleaning water after cleaning the plurality of holds and flowing through a main waste cleaning water discharge pipe onto the bottom of the main waste cleaning water discharge pipe, but such an apparatus has not yet been proposed.
An object of the present invention is therefore to provide an apparatus for discharging waste clean ing water containing remains after cleaning a plurality of holds of a bulk carrier, which permits prevention of precipitation of remains contained in waste cleaning water after cleaning the plurality of holds and flowing through a main waste cleaning water discharge pipe onto the bottom of the main waste cleaning water discharge pipe.
In accordance with one of the features of the present invention,there is provided an apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier having a double bottom structure and having a main ballast water supply pipe for supplying ballast water into a plurality of ballast tanks arranged on the both broadsides, which comprises::
a plurality of bilge wells (8) at least one each provided on the bottom (9A) of each of said plurality of holds (9);
a plurality of sub-ejectors (13) at least one each provided below each of said plurality of holds (9), for sucking up waste cleaning water containing remains after cleaning each of said plurality of holds (9) and stored in each of said plurality of bilge wells (8), a suction port (13A) of each of said plurality of sub-ejectors (13) being connected to a lower portion of each of said plurality of bilge wells (8);;
A main waste cleaning water discharge pipe (15) for collecting the waste cleaning water sucked up by means of said plurality of sub-ejectors (13) and flowing the thus collected waste cleaning water toward an exit end (15A) of said main waste cleaning water discharge pipe, a discharge port (13B) of each of said plurality of sub-ejectors (13) being connected to said main waste cleaning water discharge pipe (15); and
a main ejector (16) for sucking up the waste cleaning water flowing through said main waste cleaning water discharge pipe (15) to discharge same to outside the ship, a suction port (16A) of said main ejector (16) being connected to said exit end (15A) of said main waste cleaning water discharge pipe (15), and said main ejector (16) having a discharge port (16B) for discharging the waste cleaning water to outside the ship;
characterized in that::
a liaison pipe (24) is provided between an upstream end (15B) of said main waste cleaning water discharge pipe (15) relative to the flow direction of the waste cleaning water flowing through said main waste cleaning water discharge pipe
(15), on the one hand, and said main ballast water supply pipe (2), on the other hand, to introduce
part of ballast water into said main waste cleaning water discharge pipe (15) through said main ballast water supply pipe (2), thereby increasing the flow velocity of the waste cleaning water flowing through said main waste cleaning water discharge
pipe (15).
Figure 1 is a schematic plan view illustrating a first conventional apparatus for discharging waste
cleaning water containjng remains after cleaning a
plurality of holds of a bulk carrier;
Figure 2 is a partially cutaway sectional view il
lustrating the first conventional apparatus of Fig. 1;
Figure 3 is a schematic sectional view of Fig. 2 cut along the line A-A;
Figure 4 is a partially cutaway sectional view illustrating a second conventional apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier; and
Figure 5 is a schematic plan view illustrating an embodiment of the apparatus of the present inven- tion for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier.
From the above-mentioned point of view, we carried out extensive studies to develop an apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier, which permits prevention of precipitation of remains contained in waste cleaning water after cleaning the plurality of holds and flowing through a main waste cleaning water discharge pipe onto the bottom of the main waste cleaning water discharge pipe. As a result, we obtained a finding that it is possible to prevent precipitation of remains contained in waste cleaning water onto the bottom of the main waste cleaning water discharge pipe by increasing the flow velocity of waste cleaning water after cleaning the plurality of holds and flowing through the main waste cleaning water discharge pipe.
The present invention was made on the basis of the above-mentioned finding. An embodiment of the apparatus of the present invention is described below with reference to a drawing.
Figure 5 is a schematic plan view illustrating an embodiment of the apparatus of the present invention. As shown in Fig. 5, a main ballast water supply pipe 2 having a main valve 3 introduces, as in the first conventional apparatus, ballast water through a plurality of branch pipes 5 having respective sub-valves 4, connected to the main ballast water supply pipe 2, into a plurality of ballast tanks 1 provided in a double bottom of the ship.A main pump 6 supplies ballast water sucked up from a ballast water suction port 7 thereof into the plurality of ballast tanks 1 through the main ballast water supply pipe 2 and the plurality of branch
pipes 5, and supplies the thus sucked-up ballast water as driving water to a nozzle of a main ejector described later, and also supplies the sucked-up ballast water through the main ballast water sup
ply pipe 2 and a liaison pipe described later to a
main waste cleaning water discharge pipe described later.
A plurality of bilge wells 8 are provided, as in the first conventional apparatus, two each on the bottom of each of a plurality of holds 9. Waste clean
ing water after cleaning each of the plurality of
holds 9 and containing a considerable amount of
remains such as ore particles, coal particles or
small pieces of steel scrap, flows through each of
openings (not shown) provided two each of the
bottom of each of the plurality of holds 9 into the
respective bilge wells 8 and is stored therein.
A plurality of sub-ejectors 13 for sucking up
waste cleaning water stored in the plurality of bilge wells 8 are provided, as in the first conventional apparatus, two each below each of the plurality of holds 9. A suction port of each of the plurality of sub-ejectors 13 is connected, as in the first conventional apparatus, to a lower portion of each of the plurality of bilge wells 8, and a discharge port of each of the plurality of sub-ejectors 13 is connected, as in the first conventional apparatus, to a main waste cleaning water discharge pipe described later.Waste cleaning water stored in each of the plurality of bilge wells 8 is sucked up, as in the first conventional apparatus, from the suction port of each of the plurality of sub-ejectors 13 under the effect of driving water ejected at a high velocity from the tip of a nozzle (not shown) of each of the plurality of sub-ejectors 13, and discharged from the discharge port of each of the plurality of sub-ejectors 13 into the main waste cleaning water discharge pipe.
The above-mentioned main waste cleaning water discharge pipe 15 collects, as in the first conventional apparatus, waste cleaning water sucked up by each of the plurality of sub-ejectors 13 and flows the thus collected waste cleaning water toward an exit end 15A of the main waste cleaning water discharge pipe 15.
The above-mentioned main ejector 16 sucks up, as in the first conventional apparatus, waste cleaning water flowing through the main waste cleaning water discharge pipe 15 to discharge same to outside the ship. A suction port 16A of the main ejector 16 is connected, as in the first conventional apparatus, through a main valve 17 to the exit end 15A of the main waste cleaning water discharge pipe 15, and the main ejector 16 has, as in the first conventional apparatus, a discharge port 16B for discharging waste cleaning water to outside the ship. A nozzle 18 of the main ejector 16 is connected, as in the first conventional apparatus, to the main pump 6 through a driving water supply pipe 20 having a valve 19.Waste cleaning water flowing through the main waste cleaning water discharge pipe 15 is sucked up, as in the first conventional apparatus, from the suction port 16A of the main ejector 16 under the effect of driving water ejected at a high velocity by the main pump 6 from the tip of the nozzle 18 of the main ejector 16, and discharged to outside the ship from the discharge port 16B of the main ejector 16.
A liaison pipe 24 having a valve 23 is provided between an upstream end 15B of the main waste cleaning water discharge pipe 15 relative to the flow direction of waste cleaning water flowing through the main waste cleaning water discharge pipe 15, on the one hand, and the main ballast water supply pipe 2, on the other hand. Part of ballast water is introduced into the main waste cleaning water discharge pipe 15 through the main ballast water supply pipe 2 to increase the flow velocity of waste cleaning water flowing through the main waste cleaning water discharge pipe 15, and thus making it possible to prevent precipitation of remains contained in waste cleaning water onto the bottom of the main waste cleaning water discharge pipe 15.
In the above-described embodiment of the apparatus of the present invention, ballast water is supplied into the plurality of ballast tanks 1 as follows:
The valve 19 of the driving water supply pipe 20 and the valve 23 of the liaison pipe 24 are closed, while the main valve 3 of the main ballast water supply pipe 2 and the sub-valve 4 of each of the plurality of branch pipes 5 connected to the main ballast water supply pipe 2 are opened, and the main pump 6 is actuated. Thus, ballast water sucked up from the ballast water suction port 7 of the main pump 6 is supplied into the plurality of ballast tanks 1 through the main ballast water supply pipe 2 and the respective branch pipes 5.
In the embodiment of the apparatus of the present invention, waste cleaning water after cleaning the plurality of holds 9 and containing a considerable amount of remains is discharged to outside the ship as follows: Driving water is supplied, as in the first conventional apparatus, to the nozzle of each of the plurality of sub- ejectors 13 by means of another pump (not shown) to suck up waste cleaning water containing remains, which is stored in each of the plurality of bilge wells 8, to discharge the thus sucked-up waste cleaning water into the main waste cleaning water discharge pipe 15.On the other hand, the main valve 3 of the main ballast water supply pipe 2, the valve 19 of the driving water supply pipe 20, the main valve 17 of the main waste cleaning water discharge pipe 15 and the valve 23 of the liaison pipe 24 are opened, while the sub-valve 4 of each of the plurality of branch pipes 5 connected to the main ballast water supply pipe 2 is closed, and the main pump 6 is actuated. As a result, part of ballast water sucked up from the ballast water suction port 7 of the main pump 6 is supplied, as driving water, to the nozzle 18 of the main ejector 16 through the driving water supply pipe 20, and at the same time, the remaining part of the thus sucked-up ballast water is supplied into the main waste cleaning water discharge pipe 15 from the upstream end.
15B thereof through the main ballast water supply pipe 2 and the liaison pipe 24. Thus, waste cleaning water collected into the main waste cleaning water discharge pipe 15 by means of the plurality of sub- ejectors 13 is discharged, together with ballast water supplied into the main waste cleaning water discharge pipe 15 through the main ballast water supply pipe 2 and the liaison pipe 24, to outside the ship by means of the main ejector 16 from the discharge port 16B thereof under the effect of driving water ejected at a high velocity from the tip of the nozzle 18 of the main ejector 16. Since the flow velocity of waste cleaning water flowing through the main waste cleaning water discharge pipe 15 is increased by ballast water supplied into the main waste cleaning water discharge pipe 15 through the main ballast water supply pipe 2 and the liaison pipe 24, remains contained in waste cleaning water never precipitate onto the bottom of the main waste cleaning water discharge pipe 15.
The embodiment of the apparatus of the present invention described above is an application of the present invention to the first conventional apparatus shown in Figs. 1 to 3. It is however needless to mention that the present invention is applicable also to the second conventional apparatus shown in Fig. 4.
According to the present invention as described above in deta.il, the flow velocity of waste cleaning water after cleaning a plurality of holds of a bulk carrier and flowing through a main waste cleaning water discharge pipe is increased by introducing ballast water into the main waste cleaning water discharge pipe, and it is thus possible to prevent precipitation of remains contained in waste cleaning water onto the bottom of the main waste cleaning water discharge pipe, and hence to prevent clogging thereof, thus providing industrially useful effects.
Claims (2)
1. An apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of a bulk carrier having a double bottom structure and having a main ballast water supply pipe for supplying ballast water into a plurality of ballast tanks arranged on the both broadsides, which comprises::
a plurality of bilge wells (8) at least one each provided on the bottom (9A) of each of said plurality of holds (9);
a plurality of sub-ejectors (13) at least one each provided below each of said plurality of holds (9), for sucking up waste cleaning water containing remains after cleaning each of said plurality of holds (9) and stored in each of said plurality of bilge wells (8), a suction port (13A) of each of said plurality of sub-ejectors (13) being connected to a lower portion of each of said plurality of bilge wells (8);;
a main waste cleaning water discharge pipe (15) for collecting the waste cleaning water sucked up by means of said plurality of sub-ejectors (13) and flowing the thus collected waste cleaning water toward an exit end (15A) of said main waste cleaning water discharge pipe, a discharge port (138) of each of said plurality of sub- ejectors (13) being connected to said main waste cleaning water discharge pipe (15); and
a main ejector (16) for sucking up the waste cleaning water flowing through said main waste cleaning water discharge pipe (15) to discharge same to outside the ship, a suction port (16A) of said main ejector (16) being connected to said exit end (15A) of said main waste cleaning water discharge pipe (15), and said main ejector (16) having a discharge port (16B) for discharging the waste cleaning water to outside the ship;
characterized in that: :
a liaison pipe (24) is provided between an upstream end (15B) of said main waste cleaning water discharge pipe (15) relative to the flow direction of the waste cleaning water flowing through said main waste cleaning water discharge pipe (15), on the one hand, and said main ballast water supply pipe (2), on the other hand, to introduce part of ballast water into said main waste cleaning water discharge pipe (15) through said main ballast water supply pipe (2), thereby increasing the flow velocity of the waste cleaning water flowing through said main waste cleaning water discharge pipe (15).
2. Apparatus for discharging waste cleaning water substantially as described herein with reference to Figure 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59125480A JPS616089A (en) | 1984-06-19 | 1984-06-19 | Discharge device of cleaning bilge in hold |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8514226D0 GB8514226D0 (en) | 1985-07-10 |
| GB2162130A true GB2162130A (en) | 1986-01-29 |
| GB2162130B GB2162130B (en) | 1987-12-02 |
Family
ID=14911131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08514226A Expired GB2162130B (en) | 1984-06-19 | 1985-06-05 | Apparatus for discharging waste cleaning water containing remains after cleaning a plurality of holds of bulk carrier |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS616089A (en) |
| KR (1) | KR910000634B1 (en) |
| DE (1) | DE3521921A1 (en) |
| ES (1) | ES8607856A1 (en) |
| FI (1) | FI83410C (en) |
| FR (1) | FR2565930B1 (en) |
| GB (1) | GB2162130B (en) |
| NO (1) | NO168292C (en) |
| SE (1) | SE459082B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6486101A (en) * | 1987-06-18 | 1989-03-30 | Toray Industries | Production of antireflecting article |
| KR100467962B1 (en) * | 2002-03-18 | 2005-01-24 | 대우조선해양 주식회사 | Waste of ballast tank removing apparatus in LNG carrier |
| JP5562186B2 (en) * | 2010-09-13 | 2014-07-30 | ジャパンマリンユナイテッド株式会社 | Circulation system for ship ballast water |
| CN111319716A (en) * | 2020-03-30 | 2020-06-23 | 广船国际有限公司 | Cargo hold inlet water treatment device and treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2139081B (en) * | 1983-04-20 | 1987-01-28 | Si Jet Limited | Cleaning tanks and holds of ships |
-
1984
- 1984-06-19 JP JP59125480A patent/JPS616089A/en active Granted
-
1985
- 1985-06-05 GB GB08514226A patent/GB2162130B/en not_active Expired
- 1985-06-10 FI FI852307A patent/FI83410C/en not_active IP Right Cessation
- 1985-06-12 KR KR1019850004124A patent/KR910000634B1/en not_active Expired
- 1985-06-17 SE SE8502990A patent/SE459082B/en not_active IP Right Cessation
- 1985-06-18 ES ES544326A patent/ES8607856A1/en not_active Expired
- 1985-06-18 NO NO852460A patent/NO168292C/en unknown
- 1985-06-18 FR FR8509253A patent/FR2565930B1/en not_active Expired
- 1985-06-19 DE DE19853521921 patent/DE3521921A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB8514226D0 (en) | 1985-07-10 |
| DE3521921C2 (en) | 1990-05-23 |
| DE3521921A1 (en) | 1985-12-19 |
| JPS616089A (en) | 1986-01-11 |
| ES544326A0 (en) | 1986-06-01 |
| SE8502990L (en) | 1985-12-20 |
| ES8607856A1 (en) | 1986-06-01 |
| FR2565930B1 (en) | 1989-07-28 |
| SE459082B (en) | 1989-06-05 |
| KR860000188A (en) | 1986-01-27 |
| FI83410B (en) | 1991-03-28 |
| NO852460L (en) | 1985-12-20 |
| GB2162130B (en) | 1987-12-02 |
| FI852307A0 (en) | 1985-06-10 |
| FR2565930A1 (en) | 1985-12-20 |
| NO168292B (en) | 1991-10-28 |
| FI852307L (en) | 1985-12-20 |
| NO168292C (en) | 1992-02-05 |
| JPH0349797B2 (en) | 1991-07-30 |
| SE8502990D0 (en) | 1985-06-17 |
| KR910000634B1 (en) | 1991-01-31 |
| FI83410C (en) | 1991-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930605 |