CN113428301B

CN113428301B - Bilge water system of methanol pump cabin and dual-fuel driven ship

Info

Publication number: CN113428301B
Application number: CN202110724229.XA
Authority: CN
Inventors: 高峰; 魏伟明; 张学礼
Original assignee: Guangzhou Shipyard International Co Ltd
Current assignee: Guangzhou Shipyard International Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-11-18
Anticipated expiration: 2041-06-29
Also published as: CN113428301A

Abstract

The invention belongs to the technical field of ship construction, and particularly discloses a bilge water system of a methanol pump cabin and a dual-fuel driven ship. The bilge water system of the methanol pump cabin comprises a sewage well and an oil collecting tank discharge pipeline. The sewage well is communicated with the bottom of the methanol pump cabin to collect bilge water in the methanol pump cabin. The oil collecting groove discharge pipeline comprises an oil collecting groove, a discharge pipeline, a first driving piece and an oil residue cabin, an inlet of the discharge pipeline can be selectively communicated with a sewage well or the oil collecting groove, and an outlet of the discharge pipeline is communicated with the oil residue cabin. The first driving piece is arranged in the discharge pipeline and can suck bilge water in oil in the oil collecting tank or in the sewage well into the oil residue cabin. The dual fuel powered vessel includes the bilge water system of the methanol pump tank described above. Bilge water in the sewage well enters the oil residue cabin through the discharge pipeline for storage, and the methanol pump cabin and the oil collecting tank share one discharge pipeline, so that the use amount of equipment and pipelines is reduced, the space utilization rate of the ship is improved, and the construction cost of the ship is reduced.

Description

Bilge water system of methanol pump cabin and dual-fuel driven ship

Technical Field

The invention belongs to the technical field of ship construction, and particularly relates to a bilge water system of a methanol pump cabin and a dual-fuel driven ship.

Background

In order to reduce the pollution of the ship and realize energy conservation and consumption reduction, the ship usually adopts a fuel oil and methanol dual-fuel driving mode to provide power so as to flexibly solve the problem of fuel supply of the ship.

Aiming at the arrangement related regulation and construction requirements of methanol fuel, bilge water containing methanol may exist when a methanol pump cabin in a methanol power system leaks, and in order to ensure safe storage and use of the bilge water containing methanol, an independent bilge water system needs to be constructed so as to discharge the bilge water into a safe position when the methanol pump cabin leaks and the like, thereby avoiding dangerous situations such as explosion and the like and protecting the safe operation of a ship.

At present, an independent bilge water system not only occupies the space inside a ship, but also reduces the utilization rate of the space inside the ship. Also, the construction cost and the construction period of the ship are increased.

Therefore, a bilge water system of a methanol pump tank and a dual fuel driven ship are required to solve the above problems.

Disclosure of Invention

An object of the present invention is to provide a bilge water system of a methanol pump tank, which simplifies the structure of the bilge water system, increases the utilization rate of the internal space of a ship, and simultaneously, reduces the construction cost of the ship and shortens the construction period of the ship.

Another object of the present invention is to provide a dual-fuel driven ship to simplify the arrangement of a bilge water system, improve the utilization rate of the internal space of the ship, and simultaneously, reduce the construction cost of the ship and shorten the construction period of the ship.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a bilge water system of a methanol pump tank, comprising:

the sewage well is communicated with the bottom of the methanol pump cabin so as to collect bilge water in the methanol pump cabin;

the oil collecting tank discharge pipeline comprises an oil collecting tank, a discharge pipeline, a first driving piece and an oil residue cabin, an inlet of the discharge pipeline can be selectively communicated with the sewage well or the oil collecting tank, and an outlet of the discharge pipeline is communicated with the oil residue cabin; the first driving member is arranged in the discharge pipeline and is configured to be capable of sucking oil in the oil collecting tank or bilge water in the sewage well into the oil residue cabin.

Further, an isolation device is installed between the sewage well and the discharge pipeline, and the isolation device is used for disconnecting or communicating the sewage well and the discharge pipeline.

Further, a first stop valve is further installed between the sewage well and the discharge pipeline, and the first stop valve and the isolation device are opened or closed synchronously.

Further, the number of the first stop valves is two, and the two first stop valves are arranged on two sides of the isolating device along the suction direction of the discharge pipeline.

Further, the bleed line comprises an upstream main line, a plurality of branch lines and a downstream main line, the upstream main line and the downstream main line can be selectively communicated through one of the branch lines, the inlet of the bleed line is positioned on the upstream main line, and the outlet of the bleed line is positioned on the downstream main line; each branch pipeline is provided with one first driving piece.

Furthermore, a check valve is further arranged in the branch pipeline, and the first driving piece and the check valve are sequentially distributed along the suction direction of the discharge pipeline.

Furthermore, a second stop valve is further arranged in the branch pipeline, and the second stop valve and the check valve are arranged on two sides of the first driving piece along the suction direction of the discharge pipeline.

Further, a second stop valve is arranged between the upstream main pipeline and the oil collecting tank.

Further, the first driving member is an air pump.

A dual-fuel driven ship comprises the bilge water system of the methanol pump cabin.

The invention has the beneficial effects that:

according to the bilge water system of the methanol pump cabin, when the discharge pipeline is communicated with the oil collecting tank, oil in the oil collecting tank enters the oil residue cabin through the discharge pipeline to be stored. When the discharge pipeline is communicated with the sewage well, bilge water in the sewage well enters the oil residue cabin through the discharge pipeline to be stored. Through communicating the sewage well with the discharge pipeline, the methanol pump cabin and the oil collecting tank share one set of discharge pipeline, so that the use amount of equipment and pipelines is reduced, the optimized arrangement of the equipment and the pipelines is realized, the internal space occupied by the ship is reduced, and the space utilization rate of the ship is improved. Meanwhile, the using amount of equipment and pipelines is reduced, the construction cost of the ship is reduced, and the construction period of the ship is shortened.

According to the ship driven by double fuels, the bilge water system of the methanol pump cabin is adopted, so that the using amount of equipment and pipelines is reduced, the occupied internal space of the ship is reduced, and the space utilization rate of the ship is improved. Meanwhile, the use amount of equipment and pipelines is reduced, so that the construction cost of the ship is reduced, and the construction period of the ship is shortened.

Drawings

Fig. 1 is a schematic structural distribution diagram of a bilge water system of a methanol pump room provided in an embodiment of the present invention.

The component names and designations in the drawings are as follows:

1. a bilge well; 2. a first shut-off valve; 3. an isolation device; 4. an oil sump; 5. a bleed line; 51. an upstream main conduit; 52. a branch line; 53. a downstream main conduit; 6. a first driving member; 7. a second stop valve; 8. a check valve; 9. an oil residue cabin.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the features relevant to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment discloses a dual-fuel driven ship, and the dual-fuel driven ship uses fuel oil and methanol as power fuel, and compared with the traditional fuel oil powered ship, a methanol power system is added, so that the energy conservation and consumption reduction of the ship are realized, and the fuel supply of the ship is flexibly solved.

Specifically, the dual-fuel driven ship of the present embodiment is a finished tanker, and certainly, the dual-fuel driven ship may also be other cargo ships such as a chemical tanker. The dual-fuel driven ship is provided with a plurality of cargo holds for containing product oil, the ship is provided with a gas station, and the product oil is injected into the cargo holds through the gas station. In the process of injecting the product oil, leakage or overflow of the product oil is likely to occur. For this purpose, a sump drain line is installed at the filling station of the vessel, which sump drain line comprises the sump 4, the drain line 5, the first drive element 6 and the slag bin 9. The first driving member 6 is disposed in the discharge pipeline 5 and provides suction power to the discharge pipeline 5, so that the product oil in the oil collecting tank 4 can enter the oil residue tank 9 through the discharge pipeline 5 to be stored, and the product oil is prevented from overflowing to other positions of the ship.

In a dual-fuel driven ship, bilge water containing methanol may exist when a methanol pump cabin in a methanol power system leaks, and in order to ensure safe storage and use of the bilge water containing methanol, an independent bilge water system needs to be built so as to discharge the bilge water into a safe position when the methanol pump cabin leaks and the like, so that dangerous situations such as explosion and the like are avoided, and the safe operation of the ship is protected. Because the independent bilge water system is built, the space in the ship is occupied, and the utilization rate of the space in the ship is reduced. Also, the construction cost and the construction period of the ship are increased.

In order to solve the above problems, the present implementation also discloses a dual-fuel driven ship, which includes a bilge water system of a methanol pump tank, so as to integrate the bilge water system of the methanol pump tank and an oil sump drain pipeline together, thereby realizing the optimized arrangement of equipment and pipelines.

As shown in fig. 1, the bilge water system of the methanol pump room comprises a sewage well 1 and the oil sump discharge pipeline, wherein the sewage well 1 is communicated with the bottom of the methanol pump room, and the inlet of the sewage well 1 is positioned at the lowest point of the methanol pump room to collect bilge water in the methanol pump room. The inlet of the discharge pipeline 5 can be selectively communicated with the sewage well 1 or the oil collecting tank 4, and the outlet of the discharge pipeline 5 is communicated with the oil residue cabin 9. The first driving member 6 is disposed in the drainage pipeline 5 and provides suction power to the drainage pipeline 5, so that the drainage pipeline 5 can suck the oil or bilge water in the oil sump 4 into the oil residue chamber 9.

In this embodiment, methanol can be used as a fuel and also as a chemical cargo. Therefore, the bilge water containing methanol can be drained through the sump drain line. When the discharge pipeline 5 is communicated with the oil collecting tank 4, the oil in the oil collecting tank 4 enters the oil residue cabin 9 through the discharge pipeline 5 to be stored. When the discharge pipeline 5 is communicated with the sewage well 1, bilge water in the sewage well 1 enters the oil residue cabin 9 through the discharge pipeline 5 for storage. Through communicating bilge well 1 with discharge pipe way 5 for one set of discharge pipe way 5 of methanol pump cabin and oil trap 4 sharing has reduced the use amount of equipment and pipeline, realizes the optimal arrangement of equipment and pipeline, has reduced the inner space who occupies boats and ships, has improved the space utilization of boats and ships. Meanwhile, the using amount of equipment and pipelines is reduced, the construction cost of the ship is reduced, and the construction period of the ship is shortened.

According to the ship driven by double fuels, the bilge water system of the methanol pump cabin reduces the usage amount of equipment and pipelines, reduces the internal space occupied by the ship, and improves the space utilization rate of the ship. Meanwhile, the using amount of equipment and pipelines is reduced, the construction cost of the ship is reduced, and the construction period of the ship is shortened.

It is to be noted that the discharge line 5 cannot communicate with both the sump well 1 and the sump 4, in order to avoid mixing of bilge water with the product oil. For this purpose, as shown in fig. 1, an isolation device 3 is installed between the well 1 and the discharge pipe 5, the isolation device 3 being used to disconnect or connect the well 1 or the discharge pipe 5. In particular, the isolation device 3 of the present embodiment may be an isolation joint or an isolation pipe, the bilge well 1 being in communication with the discharge line 5 when the isolation device 3 is opened. When the isolation device 3 is closed, the bilge well 1 is disconnected from the discharge line 5.

A first stop valve 2 is further installed between the sewage well 1 and the discharge pipeline 5, and the first stop valve 2 and the isolation device 3 are opened or closed synchronously. Through isolating device 3 and first stop valve 2 can realize the dual break-make between bilge well 1 and discharge line 5, ensure the reliable break-make between bilge well 1 and discharge line 5, avoid bilge water and product oil to take place to mix in discharge line 5, improved discharge line 5's security.

Preferably, the number of the first stop valves 2 is two, and the two first stop valves 2 are arranged on two sides of the isolating device 3 along the suction direction of the discharge pipeline 5, so that the reliability of on-off between the sewage well 1 and the discharge pipeline 5 and the safety of the discharge pipeline 5 are further improved. The suction direction of the bleed line 5 is indicated by the arrow in fig. 1.

As shown in fig. 1, the discharge pipeline 5 includes an upstream main pipeline 51, a plurality of branch pipelines 52, and a downstream main pipeline 53, the upstream main pipeline 51 and the downstream main pipeline 53 may selectively communicate through one of the branch pipelines 52, and an inlet of the discharge pipeline 5 is located on the upstream main pipeline 51, so that the upstream main pipeline 51 may selectively communicate with the sump 1 or the oil sump 4. The outlet of the bleed line 5 is located on the downstream main line 53, so that the downstream main line 53 communicates with the slag bin 9. A first drive 6 is arranged on each branch 52, so that each branch 52 can suck the oil or bilge water from the sump 4 into the slag chamber 9.

Specifically, an upstream main line 51, a branch line 52 and a downstream main line 53 are arranged in this order in the suction direction of the bleed line 5. The branch pipelines 52 of this embodiment have two, and the main pipeline 51 of upper reaches communicates through one of them branch pipeline 52 with the main pipeline 53 of low reaches, and another branch pipeline 52 is as backup pipeline for discharge pipeline 5 has the redundancy design, and the fault-tolerant rate is higher, ensures that after one of them branch pipeline 52 trouble, discharge pipeline 5 still can work, has improved the reliability of the bilge water system of methanol pump cabin, thereby is favorable to improving the security of dual fuel driven boats and ships. In other alternative embodiments, three or more branch lines 52 may be provided.

As further shown in fig. 1, a check valve 8 is also arranged in the branch line 52, and the first driver 6 and the check valve 8 are distributed in sequence in the suction direction of the bleed line 5. By arranging the check valve 8, the back flow of the bilge water and the finished oil is avoided, and the bilge water and the finished oil can be ensured to completely enter the oil residue cabin 9.

Preferably, a second stop valve 7 is also provided in the branch line 52, the second stop valve 7 and the check valve 8 being provided on both sides of the first driver 6 in the suction direction of the bleed line 5. Through installation second stop valve 7, conveniently install, maintain first driving piece 6, can control the break-make of branch pipeline 52 simultaneously, ensure that every branch pipeline 52 can keep reliable break-make respectively with between upstream main pipeline 51 and the low reaches main pipeline 53.

It should be noted that the check valve 8, the first stop valve 2 and the second stop valve 7 are purchased parts, and stop valves of different models or types can be selected according to design requirements.

Specifically, the second stop valve 7 is arranged between the upstream main pipeline 51 and the oil sump 4, and the second stop valve 7 can control the oil sump 4 to be reliably opened or closed with the upstream main pipeline 51. In the tapping line 5 of the present embodiment, a second stop valve 7 is further installed in the upstream main line 51, and the second stop valve 7 is located between the two branch lines 52, so as to open or close part of the upstream main line 51 according to the use requirement of the tapping line 5, thereby realizing flexible use of the tapping line 5.

Preferably, the first driving member 6 of the present embodiment is an air pump, which is capable of providing negative pressure to the discharge pipeline 5 to pump the bilge water in the bilge well 1 and the product oil in the oil sump 4 into the oil residue chamber 9. The air pump has simple structure, convenient use and installation and lower cost. In other alternative embodiments, the first drive 6 may also be a drive such as a hydraulic pump.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A bilge water system of a methanol pump room, comprising:

the sewage well (1), the sewage well (1) is communicated with the bottom of the methanol pump cabin to collect the bilge water in the methanol pump cabin;

the oil collecting tank drainage pipeline comprises an oil collecting tank (4), a drainage pipeline (5), a first driving piece (6) and an oil residue cabin (9), an inlet of the drainage pipeline (5) can be selectively communicated with the sewage well (1) or the oil collecting tank (4), and an outlet of the drainage pipeline (5) is communicated with the oil residue cabin (9); the first drive element (6) is arranged in the discharge line (5) and is configured to be able to suck oil of the sump (4) or bilge water in the bilge well (1) into the oil residue compartment (9).

2. Bilge system of a methanol pump cabin according to claim 1, characterized in that an isolation device (3) is installed between the sump well (1) and the discharge line (5), the isolation device (3) being used for disconnecting or connecting the sump well (1) and the discharge line (5).

3. Bilge system of a methanol pump room according to claim 2, characterized in that a first shut-off valve (2) is further installed between the bilge well (1) and the discharge line (5), the first shut-off valve (2) being opened or closed synchronously with the isolation device (3).

4. Bilge water system of a methanol pump room according to claim 3, wherein the number of the first stop valves (2) is two, and two first stop valves (2) are provided on both sides of the isolation device (3) in a suction direction of the drain line (5).

5. Bilge water system of a methanol pump cabin according to claim 1, wherein the draining line (5) comprises an upstream main line (51), a plurality of branch lines (52) and a downstream main line (53), the upstream main line (51) and the downstream main line (53) being selectively communicable through one of the branch lines (52), an inlet of the draining line (5) being located on the upstream main line (51), an outlet of the draining line (5) being located on the downstream main line (53); one first driving member (6) is arranged on each branch pipeline (52).

6. Bilge water system of a methanol pump cabin according to claim 5, wherein a check valve (8) is further provided in the branch line (52), and the first driving member (6) and the check valve (8) are distributed in sequence in a suction direction of the drain line (5).

7. Bilge water system of a methanol pump capsule according to claim 6, characterized in that a second shut-off valve (7) is further provided in the branch line (52), the second shut-off valve (7) and the check valve (8) being provided on both sides of the first drive member (6) in the suction direction of the bleed line (5).

8. Bilge water system of a methanol pump compartment according to claim 5, characterized in that a second shut-off valve (7) is arranged between the upstream main conduit (51) and the sump (4).

9. Bilge water system of a methanol pump capsule according to any of claims 1-8, characterized in that the first drive member (6) is an air pump.

10. A dual fuel powered vessel comprising a bilge water system of the methanol pump tank of any one of claims 1 to 9.