Non-structural seawater tank

Abstract

The utility model discloses a non-structural seawater tank which comprises a seawater pipe used for containing seawater, the seawater pipe is vertically and fixedly connected with a ship body in a penetrating mode, and the lower end of the seawater pipe is communicated with a water through hole formed in a shell of the ship body. The seawater suction pipe is used for sucking seawater into the seawater pipe, is fixedly connected with the outer side wall of the seawater pipe and is communicated with the upper part of the inner cavity of the seawater pipe. The large-drift-diameter seawater pipe is used for replacing the function of a seawater tank of a traditional structure, the occupied space, the tonnage, the construction cost and the design difficulty of the seawater tank part are reduced, and the utilization rate of the cabin capacity and the tonnage is improved. The seawater tank can be suitable for replacing an emergency fire pump cabin seawater tank of a large ship or other seawater tanks with small water pumping amount.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, and specifically, it is a seawater tank installed in a ship. Background Art

[0002] Modern mainstream ships are all equipped with various seawater tanks. The seawater tanks are arranged below the waterline and are in direct contact with seawater inside. The function of the seawater tank is to hold seawater so that a pump can suck the seawater for use as the ship's ballast water, fire water, cooling water, etc. The seawater tanks are classified according to their positions and uses, such as high-position seawater tanks, low-position seawater tanks, seawater tanks for emergency fire pumps, seawater tanks in auxiliary equipment rooms, etc. Traditional seawater tanks are usually structural, that is, a separate compartment is divided during the ship structure design for use as a seawater tank. At this time, the seawater tank is part of the ship structure.

[0003] The characteristics of the structural seawater tank are that it can be made larger to meet the demand for a larger amount of seawater. The disadvantages are that the division of the seawater tank needs to be considered during the structural design, which increases the design difficulty and also increases part of the construction cost. At the same time, it occupies a large cabin volume, will squeeze the space of other cabins, and reduces the utilization rate of the cabin volume and tonnage. In addition, sacrificial anodes usually need to be installed in the structural seawater tank to slow down the corrosion of the seawater tank interior by seawater, which also increases the construction and maintenance costs of the structural seawater tank. Content of the Utility Model

[0004] The purpose of the utility model is to provide a non-structural seawater tank, which replaces the function of the traditional structural seawater tank with a seawater pipe, reduces the space, tonnage, construction cost and design difficulty occupied by the seawater tank part, improves the utilization rate of the cabin volume and tonnage, and can be applicable to replace the seawater tank in the emergency fire pump cabin of a large ship or other seawater tanks with a small pumping volume.

[0005] The purpose of the utility model is realized as follows: A non-structural seawater tank, comprising:

[0006] A seawater pipe for holding seawater, the seawater pipe is vertically and fixedly penetrated through the hull, and its lower end communicates with a water passing hole provided on the hull outer shell;

[0007] A seawater suction pipe for sucking seawater into the seawater pipe, the seawater suction pipe is fixedly connected to the outer side wall of the seawater pipe and is connected to the upper part of the inner cavity of the seawater pipe.

[0008] Further, the upper part of the seawater pipe is fixedly penetrated through the deck and exposed above the deck.

[0009] Further, the seawater suction pipe is connected to the part of the seawater pipe exposed above the deck.

[0010] Furthermore, a compressed air purging pipe for communicating with a compressed air source during purging is fixedly inserted through the upper end of the seawater pipe, and the compressed air purging pipe is communicated with the seawater pipe.

[0011] Furthermore, a vent pipe communicated with the seawater pipe is fixedly connected to the upper end of the seawater pipe.

[0012] Furthermore, the diameter of the seawater pipe is larger than that of the seawater suction pipe.

[0013] Furthermore, a water-permeable suction grille that can be opened and closed is connected to the lower end of the seawater pipe. The compressed air purging pipe is opposite to the suction grille, and the purging range of the compressed air purging pipe covers most of the pipe wall of the seawater pipe and the suction grille.

[0014] Furthermore, the seawater pipe is made of galvanized grade II seamless steel pipe.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. The function of the traditional structural seawater tank is replaced by a single seawater pipe, reducing the space, tonnage, construction cost and design difficulty occupied by the seawater tank part, and improving the utilization rate of the cabin volume and tonnage;

[0017] 2. At the same time, the improved seawater pipe is also equipped with components such as a vent pipe, a compressed air purging pipe and a suction grille, maintaining the functions of the traditional seawater tank. Description of the Drawings

[0018] Figure 1 is the system layout diagram of the present utility model.

[0019] Figure 2 is Figure 1 the A-A cross-sectional view in

[0020] Figure 3 is Figure 1 the B-B cross-sectional view in

[0021] Description of the reference numerals: 1 - seawater pipe; 2 - seawater suction pipe; 3 - compressed air purging pipe; 4 - vent pipe; 5 - suction grille; 6 - deck; 7 - hull shell. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. Figures 1-3 ​

[0023] As Figure 1 , 2 shown, a non-structured seawater tank is proposed, including:

[0024] A seawater pipe 1 for accommodating seawater. The seawater pipe 1 is vertically and fixedly penetrated through the hull, and its lower end communicates with a water passing hole provided on the hull shell 7. The seawater pipe 1 is set as a large-diameter pipe body with a diameter of DN400, serving as the main body of the entire seawater tank;

[0025] A seawater suction pipe 2 for sucking seawater into the seawater pipe 1. The seawater suction pipe 2 is fixedly connected to the outer side wall of the seawater pipe 1 and communicates with the upper part of the inner cavity of the seawater pipe 1. The diameter of the seawater pipe 1 is larger than that of the seawater suction pipe 2. The seawater suction pipe 2 is set as a galvanized grade II seamless steel pipe with a diameter of DN125. The seawater suction pipe 2 can be equipped with a corresponding water suction pump to suck up seawater.

[0026] Among them, the upper part of the seawater pipe 1 is fixedly penetrated through the deck 6 and exposed above the deck 6. The seawater suction pipe 2 communicates with the part of the seawater pipe 1 exposed above the deck 6.

[0027] A compressed air flushing pipe 3 is fixedly penetrated at the upper end of the above-mentioned seawater pipe 1 and is used to communicate with a compressed air source during flushing. The compressed air flushing pipe 3 is connected to the seawater pipe 1 and is set as a pipe body with a diameter of DN20, made of 316L stainless steel.

[0028] A breather pipe 4 is fixedly connected to the upper end of the above-mentioned seawater pipe 1 and is communicated with it, with a specification of DN65.

[0029] As Figure 1 , 3 shown, the lower end of the above-mentioned seawater pipe 1 is connected with a permeable suction grille 5 that can be opened and closed. The suction grille 5 is made of hot-dip galvanized steel plate. The compressed air flushing pipe 3 is facing the suction grille 5, and the flushing range of the compressed air flushing pipe 3 covers most of the pipe wall of the seawater pipe 1 (such as more than two-thirds, specifically not limited) and the suction grille 5.

[0030] The suction grille 5 is installed on the inner wall of the seawater pipe 1 perpendicular to the axis of the seawater pipe 1 at one end of the seawater pipe 1 close to the opening of the ship's hull (as Figure 3 shown). The net flow area of the suction grille 5 is about 0.082 m 2 , and the designed net flow area of the sea valve is ~0.012 m 2 , and the flow area ratio is ~6.8. The upper end face of the large-diameter seawater pipe 1 is welded with a steel plate for sealing. The compressed air flushing pipe 3 and the breather pipe 4 are arranged on the upper end steel plate of the seawater pipe 1. The part of the seawater pipe 1 in contact with the hull shell 7 is trimmed flat according to the hull line.

[0031] Since the above-mentioned seawater pipe 1 is made of galvanized grade-II seamless steel pipe and uses the galvanized grade-II seamless steel pipe as the main structure, sacrificial anodes do not need to be installed inside the seawater pipe 1.

[0032] In this embodiment, a single seawater pipe 1 replaces the function of the traditional structural seawater tank, reducing the space, tonnage, construction cost, and design difficulty occupied by the seawater tank part, and improving the utilization rate of the cabin volume and tonnage.

[0033] When the ship is sailing, seawater enters the seawater pipe 1 through the suction grille 5 and is sucked into the ship's engine room ballast, bilge, and fire protection systems by the seawater suction pipe 2. The entire seawater pipe 1 is below the waterline, so the pipe is usually filled with seawater. If there are floating ice, the floating ice will accumulate under the steel plate at the top of the seawater pipe 1 and will not affect the normal operation of the seawater suction pipe 2. The upper end of the seawater pipe 1 is connected to the breather pipe 4 to balance the air pressure inside the pipe during the change of the water level inside the pipe, enabling it to function properly. If foreign objects accumulate at the suction grille 5, compressed air is blown through the flushing pipe 3 to flush the suction grille 5. The flushing range of the compressed air flushing pipe 3 can cover most of the pipe wall of the seawater pipe 1 and the suction grille 5 to ensure the smooth flow of seawater inside the seawater pipe 1.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention; in the present invention, it should also be noted that the terms "installation" and "connection" should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally formed, or mechanically connected, or indirectly connected through an intermediate connecting member. The specific meaning of the terms in the present application can be understood according to specific circumstances.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0036] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A non-structural seawater tank, characterized in that: include: A seawater pipe (1) for containing seawater, the seawater pipe (1) being vertically fixed and penetrating the hull, and having a lower end in communication with a water hole provided on the hull shell (7); A seawater suction pipe (2) is used to suck seawater into the seawater pipe (1); the seawater suction pipe (2) is fixedly connected to the outer wall of the seawater pipe (1) and is in communication with the upper part of the inner cavity of the seawater pipe (1).

2. The non-structural seawater tank according to claim 1, characterized in that: The upper part of the seawater pipe (1) is fixedly connected to the deck (6) and exposed above the deck (6).

3. The non-structural seawater tank according to claim 2, characterized in that: The seawater suction pipe (2) is connected to the portion of the seawater pipe (1) exposed above the deck (6).

4. The non-structural seawater tank according to claim 1, characterized in that: A compressed air flushing pipe (3) for communicating with a compressed air source during flushing is fixedly connected to the upper end of the seawater pipe (1), and the compressed air flushing pipe (3) is connected to the seawater pipe (1).

5. The non-structural seawater tank according to claim 4, characterized in that: The upper end of the seawater pipe (1) is fixedly connected to a ventilation pipe (4) communicating therewith.

6. The non-structural seawater tank according to claim 1, characterized in that: The diameter of the seawater pipe (1) is greater than the diameter of the seawater suction pipe (2).

7. The non-structural seawater tank according to claim 4, characterized in that: The lower end of the seawater pipe (1) is connected to a water-permeable suction grille (5) that can be opened and closed, the compressed air purge pipe (3) is directly opposite to the suction grille (5), and the purge range of the compressed air purge pipe (3) covers most of the pipe wall of the seawater pipe (1) and the suction grille (5).

8. A non-structural seawater tank according to any one of claims 1 to 7, characterized in that: The seawater pipe (1) is a galvanized grade II seamless steel pipe.

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