CN115520338A

CN115520338A - Processing system for safely distributing and conveying seawater in ship

Info

Publication number: CN115520338A
Application number: CN202210453052.9A
Authority: CN
Inventors: 孙震; 薛冬梅; 顾时雨; 王星浩
Original assignee: Beijing Fengrunming Science And Trade Co ltd
Current assignee: Beijing Fengrunming Science And Trade Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-12-27

Abstract

The invention provides a processing system for safely distributing and transporting seawater in a ship. The inlet conduit assembly provides fluid communication between the ambient environment and the ballast tank. A first pump assembly is disposed in the inlet conduit assembly for pumping seawater through the first conduit portion to the ballast tank. The second pump assembly is mounted in fluid communication with the ballast tank and is configured to pump seawater from the ballast tank through an outlet conduit assembly subsequent to the second pump assembly. The system of the present invention may be mounted on a general purpose ocean floating platform.

Description

Processing system for safely distributing and conveying seawater in ship

Technical Field

The invention relates to a system and a method for ship water distribution treatment, in particular to a technology which reasonably utilizes seawater and is applied to a ship sailing process.

Background

During the voyage of a ship, seawater is used for many applications, such as ballast, fire protection and cooling fluids. Each type of vessel must have a properly set seawater supply system. The requirements for such a seawater system are: high reliability, low risk of leakage, high priority seawater users (such as fire protection systems) must be prioritized over low priority users, low susceptibility to damage, ease of maintenance, etc.

Marine or semi-submersible vessels are typically equipped with one or more ballast systems to control the draft or inclination of the vessel. Typically, the ballast system includes a ballast tank adapted to be filled with seawater, which is typically directed back to the ambient environment when emptied.

Disclosure of Invention

The invention provides a processing system for safely distributing and conveying seawater in a ship, which aims to avoid large-flow seawater accumulation in a closed space in the ship (such as a ship body, a floater, an upright post and a deck box).

In the seawater treatment system, a second pump assembly is provided in fluid communication with the ballast tank and is adapted to pump seawater from the ballast tank through an outlet conduit assembly mounted after the second pump assembly, the second pump assembly and outlet conduit assembly being separate from the inlet conduit assembly, the seawater being fed into the system and separately discharged from the system. A first pump assembly may pump seawater into the system while a second pump may simultaneously pump seawater out of the system. The seawater entering the system will be available at any time to different users on the vessel or similar floating platform on which the seawater treatment system is installed.

Furthermore, the inlet conduit assembly being separate from the outlet conduit assembly also means that the inlet conduit assembly may be dedicated to transporting seawater to the system, which means that there is little physical connection to the inlet conduit assembly. In practice such physical connections are often placed below the still water surface of a vessel or drift platform equipped with a seawater treatment system.

In the seawater treatment system, the inlet conduit assembly may comprise, in order, a first conduit portion, an intermediate branch portion, and a second conduit portion. At least one other catheter assembly of the system may be separable from the intermediate branch portion. This means that the first pump assembly will pump seawater to the intermediate section. From the intermediate branch portion, the second conduit portion leads to the ballast tank, but it is also possible to supply seawater to another seawater user through another conduit assembly. For example, the user may be a fire fighting system on a ship or a general seawater supply conduit assembly. The intermediate branch portion is a convenient location in the system from which the seawater may be distributed for split supply.

The second conduit portion may also lead to at least one ballast tank, to which the second conduit portion may be directly or indirectly connected.

In the present treatment system, the outlet conduit assembly may discharge liquid into the overflow device without supplying liquid to the inlet conduit assembly. Thus, a common outlet may be provided for the seawater in the system. The common outlet may be at least partly constituted by an overflow arrangement or the overflow arrangement may instead serve as a water return arrangement for bringing the seawater back to the environment surrounding the vessel or the like, on which the treatment system is mounted. Or the outlet duct assembly may be positioned outboard. As previously mentioned, if the outlet conduit assembly is adapted to discharge liquid into the overflow means, such discharge preferably does not result in backflow of the discharged liquid into the ballast tank to prevent possible contaminating liquid from entering the ballast tank. Furthermore, in many embodiments of the present invention, it is preferable not to feed liquid back to the inlet conduit assembly, which may ensure that the inlet and outlet conduits are separated from each other, to reduce risk.

The bilge water system of the vessel may be connected to a second pump assembly adapted to pump bilge water through the outlet conduit assembly. The pump of the second pump assembly may pump bilge water from within the vessel, or further treat the bilge water.

Drawings

FIG. 1 is a block diagram of a seawater treatment system according to an example on a ship

FIG. 2 is a diagram illustrating a structure of a seawater treatment system according to an embodiment

FIG. 3 is a partial schematic view of an inlet duct assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the inlet duct assembly 4, a first pump 6 is adapted to pump seawater from the environment surrounding the hull 2 to the ballast tank 8, as shown in fig. 1. The maximum water level of the intake conduit assembly 4 is above the still water surface of the hull 2. The first pump 6 may be part of a first pump assembly comprising other components, such as valves and other pumps or more pumps. The overflow means 10 is connected to the inlet conduit assembly 4. The maximum level of the overflow means 10 determines the maximum water pressure in the ballast tank 8. The overflow means 10 opens to the outside of the hull 2, from where the overflowing seawater will be discharged. The overflow means 10 is above the still water surface 12 of the water around the hull 2. Preferably, the overflow means 10 is adapted to provide permanent fluid communication between the intake conduit assembly 4 and the environment of the seawater system, the second pump 16 is adapted to pump seawater from the ballast tank 8 through the outlet conduit assembly 14, the outlet conduit assembly 14 being disposed after the second pump 16.

Figure 2 shows a seawater treatment system according to an exemplary embodiment on a hull 2. The inlet duct assembly 4 includes a first pump 6 adapted to pump seawater to a first ballast tank 8 and a second ballast tank 18. The inlet conduit assembly 4 further comprises a partial pipe section 20, wherein a first pipe section with a first valve 22 extends to the first ballast tank 8 and a second pipe section with a second valve 24 extends to the second ballast tank 18.

FIG. 3 illustrates a portion of an embodiment of an inlet duct assembly 4. A first pump assembly, not shown, is adapted to pump seawater to manifold 28, manifold 28 forming part of inlet conduit assembly 4. When valve 30 of intake conduit assembly 4 is opened, seawater is pumped to the ballast tanks, not shown. Also connected to the manifold 28 are: the other conduit assembly 32 includes a third pump assembly 34 and an additional conduit assembly 36 for supplying seawater to the fire protection system, not shown. The overflow 10 is connected to the inlet conduit after the valve 30 and the level of the overflow 10 will determine the maximum seawater pressure in the ballast tank. By means of the third pump assembly 34 it is ensured that the fire fighting system is supplied with seawater at a sufficient pressure. Especially for semi-submersible vessels in the transport position, the deck height is higher than the still water surface of the vessel. If the first pump assembly is powerful enough to pump seawater to the manifold 28 (the manifold 28 may be disposed below the deck of the semi-submersible vessel), the third pump assembly 34 will provide the additional water pressure required to deliver seawater to or above the deck, i.e., the highest water level at which fire protection may be required.

Claims

1. A processing system for safely distributing and transporting seawater in a vessel, comprising: comprising a water intake pipe assembly, a ballast tank, and an overflow device, the overflow device being in fluid communication with the water intake pipe assembly, the water intake pipe assembly providing fluid communication between the ambient environment and the ballast tank; a first pump assembly disposed in the inlet conduit assembly for pumping seawater to the ballast tank through at least a first conduit portion of the inlet conduit assembly; the second pump assembly is for pumping seawater from the ballast tank through an outlet conduit assembly disposed after the second pump assembly.

2. The system of claim 1, wherein the second pump assembly is configured to: the overflow means extends to a vertical plane to determine the maximum seawater pressure in said ballast tank, and the second pump assembly and the outlet conduit assembly are separate from the inlet conduit assembly, wherein the inlet conduit assembly comprises in sequence a first conduit section, an intermediate branch section and a second conduit section, wherein the intermediate branch section is an intermediate tank adapted to contain seawater for further distribution.

3. A system for safely distributing and transporting seawater within a marine vessel as claimed in claim 1, wherein the outlet conduit assembly is adapted to discharge liquid into an overflow arrangement without the need to supply the liquid to the inlet conduit assembly; an overflow device is connected to the intermediate tank, the overflow device being arranged such that a first overflow level provides a first outflow area from the intermediate tank and a second overflow level provides a second outflow area from the intermediate tank, the second outflow area being larger than the first outflow area.

4. A safety distribution and transfer vessel seawater treatment system as claimed in claim 3, wherein the first outflow zone is comprised of a recess in a part of the upper edge of the overflow means and one or more through holes in a part of the overflow means.

5. A safe seawater distribution and transfer vessel processing system as claimed in claim 1, wherein the intermediate tank comprises a plurality of tank chambers in fluid communication with each other; the intermediate tank further includes an intermediate tank outlet and further includes a tank flow means extending from the first conduit portion outlet to the intermediate tank outlet.

6. A system for safely distributing and transporting seawater within a marine vessel as claimed in claim 1, wherein the intermediate branch portion is a manifold from which the second conduit assembly branches, and wherein the first pump assembly is adapted to pump seawater through the manifold and the second conduit portion to the ballast tank.

7. A safety distribution and transfer vessel seawater processing system as claimed in claim 1, the vessel on which the system is loaded further comprising a caisson, wherein the caisson extends through a portion of the hull which is below the still water surface of the floating vessel, the caisson forming an integral part of the outer hull of the vessel.

8. A system for safely distributing and transporting seawater within a marine vessel as claimed in claim 7, wherein the first pump assembly comprises a submersible pump disposed in a caisson; the ship comprises a substantially vertical upright post, and the caisson extends in the upright post; the caisson forms at least a part of the intake conduit assembly and extends to the intermediate branch portion.

9. A process system for the safe distribution and transfer of seawater in a vessel according to claim 6, the intermediate branch section being mounted above the still water surface of the vessel, the intermediate branch section being arranged in a pump house provided in the vessel's column.