CN111498005A - Ship deck sewage discharge system - Google Patents
Ship deck sewage discharge system Download PDFInfo
- Publication number
- CN111498005A CN111498005A CN202010306548.4A CN202010306548A CN111498005A CN 111498005 A CN111498005 A CN 111498005A CN 202010306548 A CN202010306548 A CN 202010306548A CN 111498005 A CN111498005 A CN 111498005A
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- Prior art keywords
- water
- pipe
- sewage
- deck
- oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/48—Decks
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention relates to the technical field of ships and discloses a ship deck sewage disposal system, wherein a deck is a horizontal deck, the deck is provided with a plurality of installation grooves, each installation groove is internally provided with a floor drain group, each floor drain group comprises a plurality of floor drains which are arranged in a straight line shape and a water collecting pipe communicated with each floor drain, two groups of sewage disposal mechanisms are arranged on a port and a starboard respectively, each group of sewage disposal mechanism comprises a sewage well, a water-oil separator and an oil stain detector, the oil pollution detection device comprises a drain pipe, an oil discharge pipe and a liquid discharge pipe, wherein two ends of the water collecting pipe are respectively connected with two sewage wells, the sewage wells are connected with a water-oil separator, a first control valve is arranged at the liquid outlet end of each sewage well, the water outlet end of the water-oil separator is connected with the drain pipe provided with a second control valve, the oil outlet end of the water-oil separator is connected with the oil discharge pipe, an oil pollution detector is arranged on the drain pipe, and the drain pipe is connected with the oil discharge pipe through the liquid discharge pipe provided with a third control valve. By adopting the invention, the sewage on the deck can be discharged efficiently, and the pipeline installation is convenient; ensuring that the discharged sewage meets the standard.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a ship deck sewage system.
Background
Along with the high-speed development of ship shipping, ships are diversified, the demand of roll-on-roll-off ships is more and more, and the cargo deck of the ships needs to be continuously flat to meet the fixing requirement of cargo bearing or large-scale operation tools, so that property loss and life safety harm caused by safety accidents such as rollover and sliding of the cargo due to inclination of the deck are avoided. Therefore, the frequency of the horizontal deck is higher and higher, the requirements on the ship building precision and the deck drainage system are stricter and stricter, but the water leakage openings are scattered, the pipeline arrangement is complicated, and the water leakage openings and the pipeline are difficult to overhaul. Or when the deck surface is constructed, the hull structure is provided with beam arches, so that the ship is higher than two sides. The water leakage ports are arranged on two sides of the ship board, accumulated water flows to the side of the ship board along the inclined plane of the deck, and is discharged out of the ship board through the water leakage ports, but the ship deck needs to adopt a beam arch deck, so that the structure of the ship body is complex, and the consumption of steel materials is large.
Disclosure of Invention
The invention aims to provide a ship deck sewage discharge system, which can discharge sewage on a deck efficiently, is convenient for pipeline installation and is simple and convenient to install and operate; the sewage with oil stains is prevented from being directly discharged to the sea to pollute the environment, and the discharged sewage is ensured to meet the standard.
In order to achieve the purpose, the invention provides a ship deck pollution discharge system, which comprises a pollution discharge mechanism and a floor drain group arranged on a deck, wherein the deck is a horizontal deck, a plurality of installation grooves are arranged on the deck at intervals along the length direction of the deck, a group of floor drain groups is arranged in each installation groove, each floor drain group comprises a plurality of floor drains arranged in a straight line shape and a water collecting pipe communicated with each floor drain,
the sewage draining mechanism is provided with two groups which are respectively arranged on a port and a starboard of a ship, each group of sewage draining mechanism comprises a sewage well, a water-oil separator, an oil stain detector, a water draining pipe, an oil draining pipe and a liquid draining pipe, wherein two ends of the water collecting pipe are respectively connected with water inlet ends of the two sewage wells, a liquid outlet end of the sewage well is connected with a liquid inlet end of the water-oil separator, a first control valve is arranged on a liquid outlet end of the sewage well, a water outlet end of the water-oil separator is connected with the water draining pipe, the water draining pipe is connected with the outside, an oil outlet end of the water-oil separator is connected with an oil stain cabin of the ship through the oil draining pipe, the oil stain detector is arranged on the water draining pipe, a second control valve is arranged on the water draining pipe and is positioned behind the oil stain detector, and the water draining pipe is connected with the oil draining pipe through, and the liquid inlet end of the liquid discharge pipe connected with the drain pipe is positioned in front of the second control valve, and a third control valve is arranged on the liquid discharge pipe.
The bottom of the sewage well is provided with a slag discharge hole, and a sealing rubber plug is arranged on the slag discharge hole.
The bottom surface of the inner cavity of the sewage well is an inclined surface, the liquid outlet end of the sewage well is arranged at the highest position of the bottom surface of the inner cavity of the sewage well, and the slag discharge port is arranged at the lowest position of the bottom surface of the inner cavity of the sewage well.
As a preferable aspect of the present invention, the water collecting pipe includes a first water collecting pipe portion connected to the bilge well on a port side and a second water collecting pipe portion connected to the bilge well on a starboard side, the first water collecting pipe portion communicates with the second water collecting pipe portion, the first water collecting pipe portion and the second water collecting pipe portion are equal in length, the first water collecting pipe portion is inclined downward from a middle portion of the ship toward the port side of the ship, the second water collecting pipe portion is inclined downward from the middle portion of the ship toward the starboard side of the ship, a slope of the first water collecting pipe portion is 0.7% to 2%, and a slope of the second water collecting pipe portion is 0.7% to 2%.
In a preferred embodiment of the present invention, the slope of the first header section is 1%, and the slope of the second header section is 1%.
As a preferable scheme of the invention, the floor drain comprises a shell, a cover plate, a water retaining cover and a water inlet pipe, wherein the cover plate is installed on the shell, a plurality of water leakage holes are formed in the cover plate, the water retaining cover comprises a top plate and a surrounding plate extending downwards along the top plate, the top plate is connected with the surrounding plate in a sealing mode, the bottom surface of the cover plate is connected with the top plate through a connecting rod, the water inlet pipe is connected with the bottom surface of the shell, and the top surface of the water inlet pipe is higher than the bottom surface of the surrounding plate.
As a preferable scheme of the invention, a filter pipe is connected above the water inlet pipe, and a plurality of filter holes are uniformly distributed on the filter pipe.
In a preferred embodiment of the present invention, a check valve is disposed at an end of the drain pipe.
As the preferable scheme of the invention, the bottom of the sewage well is provided with a slag discharge hole, and the slag discharge hole is provided with a sealing rubber plug.
As a preferable scheme of the invention, the bottom surface of the inner cavity of the sewage well is an inclined surface, the liquid outlet end of the sewage well is arranged at the highest position of the bottom surface of the inner cavity of the sewage well, and the slag discharge port is arranged at the lowest position of the bottom surface of the inner cavity of the sewage well.
As the preferable scheme of the invention, a filter plate is arranged at the opening of the mounting groove.
As a preferable scheme of the invention, the filter plate is formed by splicing a plurality of filter unit plates.
Compared with the prior art, the ship deck sewage draining system provided by the embodiment of the invention has the beneficial effects that:
in the embodiment of the invention, water accumulation on the deck is avoided through a plurality of groups of floor drain groups, smooth drainage is ensured, and the two ends of the water collecting pipe are respectively connected with the sewage wells, so that water in the water collecting pipe can be discharged to the sewage wells on a port or a starboard when a ship shakes, the smooth drainage is ensured, the deck and equipment arranged on the deck are protected, and the floor drains in the floor drain groups are arranged in a straight line shape in a centralized manner, so that the pipeline installation can be facilitated, the operation is simple and convenient, and the arrangement on the deck is simple, neat and attractive; in addition, through the storage and the discharge of the sewage in the first control valve control sewage well, carry out water oil separation through water oil separator with the sewage that the sewage well was collected, detect that the sewage in the drain pipe accords with emission standard when greasy dirt detector, the second control valve is opened and is made sewage discharge to marine, otherwise the second control valve is closed and the third control valve is opened simultaneously, carry the sewage that does not accord with emission standard in the drain pipe to the drain pipe through the fluid-discharge tube, avoid can have the sewage of greasy dirt directly to discharge marine and the polluted environment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural view of a ship deck blowdown system provided by the present invention;
figure 2 is a schematic structural view of the floor drain;
in the figure, 1 is a deck; 2 is a mounting groove; 21 is a filter plate; 3 is a floor drain; 31 is a shell; 32 is a cover plate; 33 is a water retaining cover; 34 is a water inlet pipe; 35 is a filter tube; 36 is a connecting rod; 4 is a water collecting pipe; 5 is a sewage well; 6 is a water-oil separator; 7 is an oil stain detector; 8 is a drain pipe; and 9 is an oil discharge pipe.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1 and 2, a ship deck 1 pollution discharge system according to a preferred embodiment of the present invention includes a pollution discharge mechanism and a plurality of floor drain groups disposed on the deck 1, wherein the deck 1 is a horizontal deck 1, a plurality of installation grooves 2 are disposed on the deck 1 at intervals along a length direction thereof, a group of floor drain groups is disposed in each installation groove 2, each floor drain group includes a plurality of floor drains 3 arranged in a straight line shape and a water collection pipe 4 communicated with each floor drain 3,
the sewage draining mechanisms are provided with two groups and are respectively arranged on a port and a starboard of a ship, each group of sewage draining mechanisms comprises two sewage wells 5, a water-oil separator 6, an oil stain detector 7, a water draining pipe 8, an oil draining pipe 9 and a liquid draining pipe, the two ends of each water collecting pipe 4 are respectively connected with the water inlet ends of the two sewage wells 5, the liquid outlet end of each sewage well 5 is connected with the liquid inlet end of the water-oil separator 6, a first control valve is arranged on the liquid outlet end of each sewage well 5, the water outlet end of the water-oil separator 6 is connected with the water draining pipe 8, the water draining pipe 8 is connected with the outside, the oil outlet end of the water-oil separator 6 is connected with an oil stain cabin of the ship through the oil draining pipe 9, the oil stain detector 7 is arranged on the water draining pipe 8, a second control valve is arranged on the water draining pipe 8, and the second control valve is positioned behind the oil stain detector 7 (namely the oil stain detector 7 is positioned between the second control valve, the drain pipe 8 is connected with the oil discharge pipe 9 through the drain pipe, the liquid inlet end of the drain pipe connected with the drain pipe 8 is located in front of the second control valve (namely, the liquid inlet end of the drain pipe is located between the second control valve and the water-oil separator 6), and the drain pipe is provided with a third control valve. In the embodiment, the deck 1 is provided with two layers, and each layer of deck 1 is correspondingly provided with two sewage wells 5; the first control valve, the second control valve and the third control valve are all electromagnetic valves.
Exemplarily, the water collecting pipes 4 include a first water collecting pipe 4 connected to the bilge well 5 on the port side and a second water collecting pipe 4 connected to the bilge well 5 on the starboard side, the first water collecting pipe 4 is communicated with the second water collecting pipe 4, the first water collecting pipe 4 is equal to the second water collecting pipe 4 in length, the first water collecting pipe 4 is inclined downward from the middle of the ship toward the port side of the ship, the second water collecting pipe 4 is inclined downward from the middle of the ship toward the starboard side of the ship, the gradient of the first water collecting pipe 4 is 0.7% to 2%, the gradient of the second water collecting pipe 4 is 0.7% to 2%, wherein the gradient of the first water collecting pipe 4 is preferably 1%, and the gradient of the second water collecting pipe 4 is preferably 1%. The sewage collected from the floor drain 3 can be discharged into the sewage well 5 more easily through the obliquely arranged first and second water collecting pipes 4 and 4.
Illustratively, the floor drain 3 comprises a shell 31, a cover plate 32, a water retaining cover 33 and a water inlet pipe 34, wherein the cover plate 32 is installed on the shell 31, a plurality of water leakage holes are formed in the cover plate 32, the water retaining cover 33 comprises a top plate and a coaming extending downwards along the top plate, the top plate is hermetically connected with the coaming, the bottom surface of the cover plate 32 is connected with the top plate through a connecting rod 36, the water inlet pipe 34 is connected with the bottom surface of the shell 31, and the top surface of the water inlet pipe 34 is higher than the bottom surface of the coaming; the water seal is formed on the shell 31 by the water retaining cover 33, so that the peculiar smell of the water inlet pipe 34 and the sewage well 5 is prevented from overflowing from the floor drain 3 to influence the environment on the deck 1.
Exemplarily, the upper portion of the water inlet pipe 34 is connected with a filter pipe 35, a plurality of filter holes are uniformly distributed on the filter pipe 35, and the effect of filtering impurities entering the water collecting pipe 4 can be further improved through the filter pipe 35.
Illustratively, the end of the drain pipe 8 is provided with a check valve to prevent seawater from entering the ship deck 1 drainage system through the drain pipe 8.
Illustratively, the bottom of bilge well 5 is equipped with the row's cinder notch, be equipped with sealed plug on the row's cinder notch, can discharge the impurity in the bilge well 5 through opening the row's cinder notch regularly.
Illustratively, the bottom surface of the inner cavity of the bilge well 5 is an inclined surface, the liquid outlet end of the bilge well 5 is arranged at the highest position of the bottom surface of the inner cavity of the bilge well 5, so that impurities in the bilge well 5 are prevented from flowing out, and the slag discharge port is arranged at the lowest position of the bottom surface of the inner cavity of the bilge well 5, so that the impurities can be accumulated at the lowest position of the bottom surface of the inner cavity of the bilge well 5, and the impurities can be conveniently discharged.
Exemplarily, filter 21 is installed to mounting groove 2's opening part, filter 21 forms through a plurality of filter unit board concatenations, can make sewage gather through mounting groove 2, avoids 1 last ponding on deck, can tentatively filter impurity through filter 21, filter 21 that the filter unit board concatenation formed, only need change the filter unit board of relevant position when filter 21 destroys.
To sum up, the embodiment of the invention provides a ship deck 1 pollution discharge system, which can prevent water from accumulating on a deck 1 through a plurality of groups of floor drain groups, and the two ends of a water collecting pipe 4 are respectively connected with a sewage well 5, so that water in the water collecting pipe 4 can be discharged to the sewage well 5 on a port or a starboard when a ship shakes, smooth water discharge is ensured, the deck 1 and equipment arranged on the deck 1 are protected, and the floor drains 3 in the floor drain groups are arranged in a concentrated manner in a straight line, so that the pipeline installation is facilitated, the operation is simple and convenient, and the arrangement on the deck 1 is simple, neat and attractive; in addition, the storage and the discharge of sewage in the sewage well 5 are controlled through the first control valve, the sewage collected by the sewage well 5 is subjected to water-oil separation through the water-oil separator 6, when the oil contamination detector 7 detects that the sewage in the drain pipe 8 meets the discharge standard, the second control valve is opened to discharge the sewage to the sea, otherwise, the second control valve is closed while the third control valve is opened to convey the sewage which does not meet the discharge standard in the drain pipe 8 to the drain pipe 9 through the drain pipe, and the sewage which can contain oil contamination is prevented from being directly discharged to the sea to pollute the environment.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A ship deck pollution discharge system is characterized by comprising a pollution discharge mechanism and a floor drain group arranged on a deck, wherein the deck is a horizontal deck, a plurality of installation grooves are arranged on the deck at intervals along the length direction of the deck, a group of floor drain group is arranged in each installation groove, each floor drain group comprises a plurality of floor drains arranged in a straight line shape and a water collecting pipe communicated with each floor drain,
the sewage draining mechanism is provided with two groups which are respectively arranged on a port and a starboard of a ship, each group of sewage draining mechanism comprises a sewage well, a water-oil separator, an oil stain detector, a water draining pipe, an oil draining pipe and a liquid draining pipe, wherein two ends of the water collecting pipe are respectively connected with water inlet ends of the two sewage wells, a liquid outlet end of the sewage well is connected with a liquid inlet end of the water-oil separator, a first control valve is arranged on a liquid outlet end of the sewage well, a water outlet end of the water-oil separator is connected with the water draining pipe, the water draining pipe is connected with the outside, an oil outlet end of the water-oil separator is connected with an oil stain cabin of the ship through the oil draining pipe, the oil stain detector is arranged on the water draining pipe, a second control valve is arranged on the water draining pipe and is positioned behind the oil stain detector, and the water draining pipe is connected with the oil draining pipe through, and the liquid inlet end of the liquid discharge pipe connected with the drain pipe is positioned in front of the second control valve, and a third control valve is arranged on the liquid discharge pipe.
2. The ship deck sewage system of claim 1, wherein the header comprises a first header portion connected to the sewer well on a port side and a second header portion connected to the sewer well on a starboard side, the first header portion communicating with the second header portion, the first header portion being equal in length to the second header portion, the first header portion being inclined downward from a middle of the ship toward the port side of the ship, the second header portion being inclined downward from the middle of the ship toward the starboard side of the ship, the first header portion having a gradient of 0.7% to 2%, the second header portion having a gradient of 0.7% to 2%.
3. A ship deck waste system as claimed in claim 2, wherein the first header section has a slope of 1% and the second header section has a slope of 1%.
4. The ship deck drainage system of claim 1, wherein the floor drain comprises a shell, a cover plate, a water retaining cover and a water inlet pipe, the cover plate is mounted on the shell, the cover plate is provided with a plurality of water leakage holes, the water retaining cover comprises a top plate and a coaming extending downwards along the top plate, the top plate is hermetically connected with the coaming, the bottom surface of the cover plate is connected with the top plate through a connecting rod, the water inlet pipe is connected with the bottom surface of the shell, and the top surface of the water inlet pipe is higher than the bottom surface of the coaming.
5. The ship deck drainage system of claim 4, wherein a filter pipe is connected above the water inlet pipe, and a plurality of filter holes are uniformly distributed on the filter pipe.
6. A ship deck sewerage system according to claim 1, characterised in that the end of the drain pipe is provided with a non-return valve.
7. The ship deck sewage system of claim 1, wherein a slag discharge port is formed at the bottom of the sewage well, and a sealing rubber plug is arranged on the slag discharge port.
8. The ship deck sewage system of claim 7, wherein the bottom surface of the interior chamber of the bilge well is an inclined surface, the effluent end of the bilge well is disposed at the highest position of the bottom surface of the interior chamber of the bilge well, and the slag discharge port is disposed at the lowest position of the bottom surface of the interior chamber of the bilge well.
9. A ship deck sewage system as claimed in claim 1, wherein a filter plate is installed at an opening of the installation recess.
10. A ship deck waste system as claimed in claim 9, wherein the filter panels are formed by splicing a plurality of filter element panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306548.4A CN111498005A (en) | 2020-04-17 | 2020-04-17 | Ship deck sewage discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306548.4A CN111498005A (en) | 2020-04-17 | 2020-04-17 | Ship deck sewage discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111498005A true CN111498005A (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010306548.4A Pending CN111498005A (en) | 2020-04-17 | 2020-04-17 | Ship deck sewage discharge system |
Country Status (1)
| Country | Link |
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| CN (1) | CN111498005A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428301A (en) * | 2021-06-29 | 2021-09-24 | 广船国际有限公司 | Bilge water system of methanol pump cabin and dual-fuel driven ship |
| CN113581404A (en) * | 2021-08-29 | 2021-11-02 | 金宏娟 | Bulk carrier warehouse bilge well washs assistor |
| CN113650728A (en) * | 2021-08-11 | 2021-11-16 | 中船澄西船舶修造有限公司 | Chemical oil tanker deck residual liquid system |
| CN114056485A (en) * | 2021-11-22 | 2022-02-18 | 沪东中华造船(集团)有限公司 | Side opening ice melting pipeline and ice melting method |
| CN114771724A (en) * | 2022-05-26 | 2022-07-22 | 广船国际有限公司 | Ship drainage system and ship |
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| CN204197227U (en) * | 2014-09-30 | 2015-03-11 | 广州广船国际股份有限公司 | A kind of draining scupper structure |
| US9739045B1 (en) * | 2015-01-28 | 2017-08-22 | Keith Douglas Jones | Shower floor drain |
| CN206606320U (en) * | 2017-03-18 | 2017-11-03 | 广州市万里达水上用品开发有限公司 | A kind of drain assembly of speedboat |
| CN206679198U (en) * | 2017-04-24 | 2017-11-28 | 福建蓝海湾游艇发展有限公司 | A kind of yacht drainage system |
| CN110155299A (en) * | 2019-06-27 | 2019-08-23 | 中船黄埔文冲船舶有限公司 | A kind of ship deck oily sewage disposal system |
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2020
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204197227U (en) * | 2014-09-30 | 2015-03-11 | 广州广船国际股份有限公司 | A kind of draining scupper structure |
| US9739045B1 (en) * | 2015-01-28 | 2017-08-22 | Keith Douglas Jones | Shower floor drain |
| CN206606320U (en) * | 2017-03-18 | 2017-11-03 | 广州市万里达水上用品开发有限公司 | A kind of drain assembly of speedboat |
| CN206679198U (en) * | 2017-04-24 | 2017-11-28 | 福建蓝海湾游艇发展有限公司 | A kind of yacht drainage system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428301A (en) * | 2021-06-29 | 2021-09-24 | 广船国际有限公司 | Bilge water system of methanol pump cabin and dual-fuel driven ship |
| CN113650728A (en) * | 2021-08-11 | 2021-11-16 | 中船澄西船舶修造有限公司 | Chemical oil tanker deck residual liquid system |
| CN113581404A (en) * | 2021-08-29 | 2021-11-02 | 金宏娟 | Bulk carrier warehouse bilge well washs assistor |
| CN114056485A (en) * | 2021-11-22 | 2022-02-18 | 沪东中华造船(集团)有限公司 | Side opening ice melting pipeline and ice melting method |
| CN114771724A (en) * | 2022-05-26 | 2022-07-22 | 广船国际有限公司 | Ship drainage system and ship |
| CN114771724B (en) * | 2022-05-26 | 2023-10-03 | 广船国际有限公司 | Ship drainage system and ship |
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Application publication date: 20200807 |
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