CN114771724B - Ship drainage system and ship - Google Patents

Abstract

The invention discloses a ship drainage system and a ship. The ship drainage system comprises a drainage ditch, a first drainage pump, a second drainage pump and a drainage pipe, wherein the drainage ditch is arranged below a to-be-drained cabin and is communicated with the to-be-drained cabin, the drainage pipe is arranged below the drainage ditch, the drainage ditch is connected with the first drainage pump and the second drainage pump respectively through the drainage pipe, the displacement of the first drainage pump is larger than that of the second drainage pump, and the first drainage pump and the second drainage pump can both drain water inside the drainage pipe to the outside of a ship body. The water draining device has high draining efficiency, is favorable for draining water, can be suitable for draining a large amount of accumulated water, is also suitable for draining a small amount of accumulated water daily, and is favorable for saving energy.

Description

Ship drainage system and ship

Technical Field

The invention relates to the technical field of ships, in particular to a ship drainage system and a ship comprising the same.

Background

A rolling ship is a ship for simultaneously transporting rolling goods such as automobiles and passengers, and generally designs an upper space of a ship body as a passenger place such as a passenger accommodation and an entertainment facility, and designs a lower space of the ship body as a goods place such as an automobile.

In order to ensure the operation safety of ships, a fixed fire extinguishing system is required to be configured at the cargo position of the rolling ship, and the most common fixed fire extinguishing system of the rolling ship at present is water-based fire extinguishing, namely, fire extinguishing is performed by spraying water to a fire disaster area when a fire accident occurs at the cargo position. During fire extinguishment, the problem of water drainage at the cargo position needs to be considered, accumulated water is discharged in time, and the occurrence of free liquid level in the cargo position is prevented from affecting the stability of the ship.

For the goods department that is higher than design draft place deck, can set up the deck drain port on the deck, directly discharge the fire water inside the goods department into the sea through the mode of gravity emission, but to the bottom garage that is located below the design draft of deck, prior art sets up a certain amount of bilge wells and corresponding suction inlet in the garage, and every suction inlet all pumps ponding through the pump. However, this drainage mode inside the bottom garage has the following disadvantages:

1. because the accumulated water in the bottom layer garage can only be pumped and discharged through the sewage well, the water discharge efficiency is low, and when the large-displacement sprinkling fire is performed in the bottom layer garage, the accumulated water in the bottom layer garage cannot be timely discharged, so that the free liquid level rises, and the ship stability is affected;

2. because the fire control water quantity inside the bottom layer garage is large, the corresponding discharge capacity of the drainage pump is also large, when daily cleaning is carried out inside the bottom layer garage, the water quantity is generally not large, a large-discharge pump and a large-pipe-diameter drainage pipeline are adopted, energy is wasted, and accumulated water in a sewage well is difficult to drain cleanly.

Disclosure of Invention

One object of the present invention is to: provided is a ship drainage system which has high drainage efficiency and is favorable for drainage.

Another object of the invention is: the ship drainage system is not only suitable for discharging a large amount of accumulated water, but also suitable for discharging a small amount of accumulated water, and is beneficial to saving energy.

A further object of the invention is: provided is a ship which has excellent drainage performance.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, a ship drainage system is provided, including escape canal, first drain pump, second drain pump and drain pipe, the escape canal sets up the below of waiting to drain the cabin, just the escape canal with wait to drain the cabin intercommunication, the drain pipe sets up the below of escape canal, the escape canal pass through the drain pipe respectively with first drain pump with the second drain pump is connected, the discharge capacity of first drain pump is greater than the second drain pump, first drain pump with the second drain pump homoenergetic will the inside water of drain pipe discharges to the outside of hull.

As a preferable technical scheme of the ship drainage system, a plurality of drainage openings are formed in positions, corresponding to the bottoms of the cabins to be drained, of the drainage ditches, and the drainage openings are distributed at intervals along the length direction of the drainage ditches.

As a preferable technical scheme of the ship drainage system, the ship drainage system further comprises a water leakage cover plate, wherein the water leakage cover plate is arranged on the water outlet in a covering mode, and a plurality of water leakage holes are formed in the water leakage cover plate.

As a preferable technical scheme of the ship drainage system, two drainage ditches are arranged and distributed on two sides, close to the outboard side, of a ship cabin to be drained respectively, each drainage pipe comprises a first pipe and two second pipes, the two second pipes are in one-to-one correspondence with the two drainage ditches respectively, the two second pipes are arranged under the drainage ditches, one ends of the two second pipes are connected through the first pipes respectively, the first drainage pump and the second drainage pump are connected with the first pipes, and the second pipes are communicated with the corresponding drainage ditches respectively.

As a preferable technical solution of the ship drainage system, the second pipe is communicated with the drainage ditch through at least three branch pipes, and the at least three branch pipes are distributed at intervals along the extending direction of the second pipe.

As a preferable technical scheme of the ship drainage system, the branch pipe is provided with a first isolation valve, the first isolation valve can selectively isolate the branch pipe from the drainage ditch, and the first isolation valve is a remote control valve.

As a preferable technical scheme of the ship drainage system, a plurality of first liquid level switches are arranged in the drainage ditch, the first liquid level switches can control the starting of the first isolation valves, the first liquid level switches are in one-to-one correspondence with the branch pipes, and the first liquid level switches are close to the branch pipes corresponding to the first liquid level switches.

As a preferable technical scheme of the ship drainage system, a second liquid level switch is arranged in the first pipe, and the second liquid level switch can control the first drainage pump or the second drainage pump to be started.

As a preferable technical solution of the ship drainage system, two first drainage pumps are provided, and the two first drainage pumps are respectively distributed at intervals along the extending direction of the first pipe.

On the other hand, still provide a boats and ships, including above-mentioned boats and ships drainage system.

The beneficial effects of the invention are as follows: through setting up the escape canal in the below of waiting to drain the cabin, utilize drain pipe and first drain pump or second drain pump can be with ponding discharge to the outside of hull, avoid ponding to form the free liquid level and influence the stability of boats and ships in waiting to drain the inside of cabin, be favorable to guaranteeing boats and ships safety. Because the discharge capacity of first drainage pump is greater than the discharge capacity of second drainage pump, when waiting to drain the inside fire and spray in a large number of cabin, can drain through the big first drainage pump of discharge capacity, wait to drain the inside daily washing of cabin when waiting to drain, wait to drain the inside ponding volume of cabin this moment less, can drain through the second drainage pump that the discharge capacity is little, select the drainage pump of different discharge capacities to waiting to drain the inside different ponding volume of cabin, not only can the energy saving, can empty the inside water of cabin with waiting to drain moreover, prevent too much ponding and remain waiting to drain the inside of cabin.

Drawings

The invention is described in further detail below with reference to the drawings and examples.

Fig. 1 is a top view of a marine drainage system according to an embodiment.

Fig. 2 is a bottom view of the drainage system of the ship according to the embodiment.

Fig. 3 is a partial view of a drainage system of a ship according to an embodiment.

Fig. 4 is a cross-sectional view of A-A in fig. 1.

Fig. 5 is an enlarged view at B in fig. 4.

In the figure:

100. the cabin to be drained; 200. a bulkhead; 300. a side cabin; 400. a functional compartment;

1. a drainage ditch; 2. a water leakage cover plate; 3. a first tube; 4. a second tube; 5. a branch pipe; 6. a first connection pipe; 7. a second connection pipe; 8. a third connection pipe; 9. a first isolation valve; 10. a second liquid level switch; 11. a second isolation valve; 12. a first service valve; 13. a second service valve; 14. a check valve; 15. an outboard exhaust valve; 16. a first drain pump; 17. a second drain pump; 18. a first level switch.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1 to 5, wherein the arrow direction in the drawing indicates the drainage direction of the accumulated water. The invention provides a ship drainage system, which comprises a drainage ditch 1, a first drainage pump 16, a second drainage pump 17 and a drainage pipe, wherein the drainage ditch 1 is arranged below a ship cabin 100 to be drained, the drainage ditch 1 is communicated with the ship cabin 100 to be drained, the drainage pipe is arranged below the drainage ditch 1, the drainage ditch 1 is respectively connected with the first drainage pump 16 and the second drainage pump 17 through the drainage pipe, the displacement of the first drainage pump 16 is larger than that of the second drainage pump 17, and the first drainage pump 16 and the second drainage pump 17 can drain water inside the drainage pipe to the outside of a ship body.

By arranging the drain ditch 1 below the to-be-drained cabin 100, accumulated water can be drained to the outside of the ship body by using the drain pipe and the first drain pump 16 or the second drain pump 17, so that the influence of accumulated water on the stability of the ship due to the formation of a free liquid level in the to-be-drained cabin 100 is avoided, and the safety of the ship is guaranteed. Because the discharge capacity of the first drainage pump 16 is larger than the discharge capacity of the second drainage pump 17, when a large amount of fire is sprayed in the cabin 100 to be drained, the first drainage pump 16 with large discharge capacity can drain water, daily cleaning is performed in the cabin 100 to be drained, the water volume in the cabin 100 to be drained is small, the second drainage pump 17 with small discharge capacity can drain water, drainage pumps with different discharge capacities can be selected according to different water volumes in the cabin 100 to be drained, energy sources can be saved, water in the cabin 100 to be drained can be drained, and excessive water is prevented from remaining in the cabin 100 to be drained.

Referring to fig. 3 and 4, in the present embodiment, the drainage ditch 1 is provided with a plurality of drainage ports corresponding to the bottom of the cabin 100 to be drained, and the plurality of drainage ports are distributed at intervals along the length direction of the drainage ditch 1. The top of the drainage ditch 1 is provided with a plurality of drainage ports, and meanwhile accumulated water in the to-be-drained cabin 100 is drained to the inside of the drainage ditch 1, so that the drainage speed of the drainage ditch 1 is increased, and the drainage efficiency of a ship drainage system is improved.

The ship drainage system further comprises a water leakage cover plate 2, wherein the water leakage cover plate 2 is arranged on the water outlet in a covering mode, and a plurality of water leakage holes are formed in the water leakage cover plate 2. The main purpose of the water leakage cover plate 2 is to block sundries in the cabin to be drained 100 and prevent sundries in the cabin to be drained 100 from falling into the drainage ditch 1 to block the pipeline. The water leakage cover plate 2 is provided with a plurality of water leakage holes, the water leakage holes are provided with water leakage points, the water leakage holes are used for dispersing the position of accumulated water to be discharged, the water can be discharged easily, and the phenomenon that the objects in the cabin 100 to be discharged are sucked away due to the fact that a rapid flow is formed in the water outlet can be prevented. Preferably, the water leakage cover plate 2 is in the same plane as the bottom of the hold 100 to be drained.

Referring to fig. 1 to 3, in this embodiment, two drainage ditches 1 are provided, the two drainage ditches 1 are respectively distributed on two sides of the cabin 100 to be drained near the outboard side, the drainage pipe comprises a first pipe 3 and two second pipes 4, the two second pipes 4 are respectively in one-to-one correspondence with the two drainage ditches 1, the two second pipes 4 are arranged under the drainage ditches 1, one ends of the two second pipes 4 are respectively connected through the first pipe 3, the first drainage pump 16 and the second drainage pump 17 are both connected with the first pipe 3, and the second pipes 4 are respectively communicated with the corresponding drainage ditches 1. The gutters 1 are distributed on both sides of the to-be-drained cabin 100 in the outboard direction, and the influence on the internal structure of the to-be-drained cabin 100 is reduced as much as possible. In addition, through setting up two escape canal 1, every escape canal 1 all is connected with a second pipe 4, can utilize two escape canal 1 to discharge ponding simultaneously during the use, has further increased ponding discharging's efficiency.

Specifically, the second pipe 4 is inclined downward toward the first pipe 3, and the downward inclined second pipe 4 is beneficial to the flow of the accumulated water from the second pipe 4 to the first pipe 3, so that the accumulated water is prevented from remaining in the second pipe 4.

In this embodiment, the first pipe 3 and the second pipe 4 are disposed on the region where the functional compartment 400 of the hull is not fire-catching, and the side compartments 300 are respectively provided at both sides of the functional compartment 400 of the hull, and the side compartments 300 and the functional compartment 400 are spaced apart by the bulkhead 200, thereby preventing damage to the ship's drainage system when fire-catching.

Preferably, the second pipe 4 communicates with the drain 1 through at least three branch pipes 5, and the at least three branch pipes 5 are spaced apart along the extending direction of the second pipe 4. Specifically, the upper end of the branch pipe 5 is connected to the drain 1, and the lower end of the branch pipe 5 is connected to the second pipe 4. Through at least three branch pipes 5 and escape canal 1 intercommunication, accelerate the inside ponding flow direction of escape canal 1 second pipe 4's speed, in addition, under the condition that partial branch pipe 5 was blockked up, still can utilize other branch pipes 5 to drain, be favorable to improving boats and ships drainage system's reliability.

In this embodiment, the second pipe 4 communicates with the drain 1 through three branch pipes 5, and the three branch pipes 5 are spaced apart along the extending direction of the second pipe 4. In other embodiments, the number of the branch pipes 5 may be flexibly changed according to the extension length of the second pipe 4, for example, the number of the branch pipes 5 is set to one, two, four, or the like, and the number of the branch pipes 5 is not particularly limited herein.

The branch pipe 5 is provided with a first isolation valve 9, the first isolation valve 9 can selectively isolate the branch pipe 5 from the drainage ditch 1, and the first isolation valve 9 is a remote control valve. The first isolation valve 9 is controlled to be closed, the branch pipe 5 and the drainage ditch 1 are isolated, and the branch pipe 5 and the drainage ditch 1 are in a non-communication state at the moment; the first isolation valve 9 is controlled to be opened, the branch pipe 5 and the drainage ditch 1 are in a communication state at the moment, and accumulated water in the drainage ditch 1 can flow into the branch pipe 5. The first isolation valve 9 is set as a remote control valve, the capability of using and operating is kept under the condition that the first isolation valve 9 is submerged, the use is convenient, and the reliability of the ship drainage system is also improved.

Referring to fig. 3 and 4, in order to improve the control intelligence of the first isolation valve 9, the drainage ditch 1 is internally provided with a plurality of first liquid level switches 18, the first liquid level switches 18 can control the start of the first isolation valve 9, the first liquid level switches 18 are in one-to-one correspondence with the branch pipes 5, and the first liquid level switches 18 are arranged close to the branch pipes 5 corresponding to the first liquid level switches. It will be appreciated that the accumulated water in the vessel 100 to be drained will drain automatically into the drain 1 and flow to the branch pipe 5 under the action of gravity, when there is a certain amount of accumulated water at the position where the branch pipe 5 communicates with the drain 1, the first level switch 18 will be triggered, and when the first level switch 18 is triggered, the first level switch 18 controls the first isolation valve 9 to be started, so that the branch pipe 5 communicates with the drain 1 to drain the accumulated water from the drain 1 smoothly. The design of the first liquid level switch 18 can automatically open the first isolation valve 9, does not need the crew to stare at the ponding condition in the drainage ditch 1 at any time, is beneficial to reducing the cost and improving the reliability of the ship drainage system.

Referring to fig. 2 and 3, further, the inside of the first pipe 3 is provided with a second liquid level switch 10, and the second liquid level switch 10 can control the first drain pump 16 or the second drain pump 17 to be activated. It will be appreciated that the second level switch 10 is triggered when the set volume of water is reached inside the first pipe 3. In a specific design, the drain pump that is preferably activated is programmed according to the frequency of use of the first drain pump 16 and the second drain pump 17. If the program sets the first drain pump 16 to be a priority-on drain pump, when the second liquid level switch 10 is triggered, the second liquid level switch 10 automatically triggers the first drain pump 16 to be started, and if the program sets the first drain pump 16 to be a priority-on drain pump, the program needs to start the second drain pump 17 during daily cleaning, at this time, the second drain pump 17 can be started by manual operation.

In the present embodiment, two first drain pumps 16 are provided, and the two first drain pumps 16 are respectively spaced apart along the extending direction of the first pipe 3. Two first drainage pumps 16 are arranged, and when the water volume in the cabin 100 to be drained is large, the two first drainage pumps 16 work simultaneously, so that the water volume discharging speed in the cabin 100 to be drained is further increased.

In the present embodiment, the first drain pump 16 and the second drain pump 17 are both disposed outside the cabin 100 to be drained, and the first drain pump 16 and the second drain pump 17 are both located in different cabins from the drain 1.

When the first drain pump 16 is provided with two, one of the first drain pumps 16 is provided between the first equipment, the other first drain pump 16 is provided in the second equipment, the first equipment is spaced apart from the second equipment, and the second equipment is far away from the first pipe 3, the first drain pump 16 inside the first equipment is connected with the first pipe 3 through the first connecting pipe 6, the first drain pump 16 inside the second equipment is connected with the first pipe 3 through the second connecting pipe 7, and the second connecting pipe 7 passes through the first equipment and extends into the second equipment. When the fire-resistant ship is specifically designed, no accessory which is possibly affected by fire is arranged between the first equipment and the first connecting pipe 6, and the second connecting pipe 7 penetrates through the pipeline of the part between the first equipment to meet the fire-resistant requirement, and the first drainage pump 16 in the part between the first equipment and the inside of the second equipment is powered by different power supply circuits, so that any single-point fire accident or water inlet accident can not cause the two first drainage pumps 16 to lose working capacity at the same time, and the reliability of a ship drainage system is improved.

Specifically, the second drain pump 17 is connected to the first pipe 3 through the third connection pipe 8.

In order to facilitate the maintenance of the first drain pump 16 and the second drain pump 17, a second isolation valve 11 is provided between the first drain pump 16 and the first pipe 3 and between the second drain pump 17 and the first pipe 3, preferably the second isolation valve 11 is a remote control valve, and a first maintenance valve 12 is provided between the second isolation valve 11 and the first drain pump 16 and between the second isolation valve 11 and the second drain pump 17.

In this embodiment, the first drain pump 16 and the second drain pump 17 are connected with an outboard pipe (not shown), and the accumulated water pumped by the first drain pump 16 and the second drain pump 17 is discharged to the outside of the hull through the corresponding outboard pipes, so as to smoothly discharge the accumulated water to the sea. The end of the outboard pipe, which is close to the first drain pump 16 or the second drain pump 17, is provided with a second service valve 13, and along the drain flow direction of the accumulated water, the outboard pipe is also provided with a check valve 14 and an outboard drain valve 15 in sequence, and the second service valve 13 is located between the first drain pump 16 and the check valve 14 or between the second drain pump 17 or the check valve 14.

It should be noted that, the cabin to be drained in the present specification may be a bottom garage of a rolling ship, or may be other cabins on a ship. The ship drainage system in this specification is not only applicable to a roll ship, but also to other types of ships.

The following application of such a ship drainage system to the bottom layer garage on a rolling ship exemplifies its principle of operation (taking as an example the procedure to set the first drain pump 16 as the preferentially on drain pump):

when the fire disaster occurs in the bottom layer garage, the water-based fire control of the bottom layer garage is excited to work and discharges fire water for fire protection, and a large amount of fire water flows into the drainage ditch 1;

the liquid level in the drainage ditch 1 rises, a first liquid level switch 18 in the drainage ditch 1 is triggered, and a corresponding first isolation valve 9 is opened through the first liquid level switch 18, so that the branch pipe 5 is communicated with the drainage ditch 1, and accumulated water in the drainage ditch 1 passes through a second pipe 4 and a first pipe 3 of a flow passage of the branch pipe 5;

when the liquid level in the first pipe 3 reaches a certain height, the second liquid level switch 10 in the first pipe 3 is triggered, the second liquid level switch 10 automatically starts the first drainage pump 16, accumulated water in the cabin with drainage is timely discharged to the outside of the ship body through the first drainage pump 16, and adverse effects caused by free liquid facing the steady state of the ship due to the fact that accumulated water in the bottom garage rises are avoided.

When the cabin is cleaned daily, the accumulated water in the bottom garage is less, and the second drainage pump 17 with smaller power can be utilized to drain, so that the second drainage pump 17 needs to be manually controlled to start, and the drainage operation is performed through the second drainage pump 17.

When the program sets the second drain pump 17 to be a priority-on drain pump, the operation principle of the ship drain system is similar to that of the program sets the first drain pump 16 to be a priority-on drain pump, and will not be repeated here.

In one embodiment, a ship is further provided, including the ship drainage system in any one of the embodiments, the ship drainage system has high drainage efficiency and wide adaptability, and is beneficial to saving energy.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (5)

1. The utility model provides a ship drainage system, its characterized in that includes escape canal, first drain pump, second drain pump and drain pipe, the escape canal sets up the below of waiting to drain the cabin, just the escape canal with wait to drain the cabin intercommunication, the drain pipe sets up the below of escape canal, the escape canal pass through the drain pipe respectively with first drain pump with the second drain pump is connected, the discharge capacity of first drain pump is greater than the second drain pump, first drain pump with the second drain pump can both will drain the inside water of drain pipe to the outside of hull, the escape canal is provided with two, two the escape canal distributes respectively wait to drain the both sides that the cabin is close to the inboard outside, the drain pipe includes first pipe and two second pipes, two the second pipe respectively with two the escape canal one-to-one, and two second pipes are arranged under the drainage ditch, one ends of the two second pipes are respectively connected with the first pipe, the second pipes incline downwards towards the direction of the first pipe, the first drainage pump and the second drainage pump are respectively connected with the first pipe, the second pipes are respectively communicated with the corresponding drainage ditch, each second pipe is communicated with the corresponding drainage ditch through at least three branch pipes, at least three branch pipes are distributed at intervals along the extending direction of the second pipe, each branch pipe is provided with a first isolation valve, the first isolation valves can selectively isolate the corresponding branch pipes from the drainage ditch, the first isolation valves are remote control valves, a plurality of first liquid level switches are arranged in the drainage ditch and can control the starting of the corresponding first isolation valves, the first liquid level switches are in one-to-one correspondence with the branch pipes, the first liquid level switches are arranged close to the branch pipes corresponding to the first liquid level switches, a second liquid level switch is arranged in the first pipe, and the second liquid level switch can control the first drainage pump or the second drainage pump to be started.

2. The marine drainage system of claim 1, wherein the drainage ditch is provided with a plurality of drainage ports at positions corresponding to the bottom of the cabin to be drained, and the plurality of drainage ports are distributed at intervals along the length direction of the drainage ditch.

3. The marine drainage system of claim 2, further comprising a water drain cover plate covering the drain opening, the water drain cover plate having a plurality of water drain holes disposed thereon.

4. The marine drainage system of claim 1, wherein two of the first drainage pumps are provided, the two first drainage pumps being spaced apart along the extension direction of the first pipe, respectively.

5. A vessel comprising a vessel drainage system according to any one of claims 1 to 4.