A marine engine room ice water tank structure

Abstract

The utility model relates to a kind of ship engine room ice water tank structure, the bottom edge of each side wall of ice water tank is connected with the inner surface of ship shell plate;The top plate of ice water tank is connected with the ice water tank passage of vertical extension;Ice water tank passage is used as ice accumulation area;The ice water tank passage is adjacent to engine room escape passage, and share bulkhead;Multiple submarine doors are set in the ship shell plate of ice water tank bottom, and the submarine door is provided with grating;One side wall of ice water tank is provided with seawater main pipe, vertical cofferdam fender plate is set between the side wall and submarine door, to prevent that ice directly enters the seawater main pipe through submarine door in seawater;The top plate edge of cofferdam fender plate is lower than the lowest liquid level of ice water tank.Cofferdam fender plate design, especially its bending part with specific angle, constitutes physical barrier.It can effectively block ice entering from submarine door, and guide ice to float using inclined surface, greatly reduce the risk of ice being directly sucked into seawater main pipe.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, and in particular to a structure for an ice water tank in a ship's engine room. Background Technology

[0002] Polar regulations specify clear requirements for the installation of engine room seawater tanks (ice tanks): PC1-PC5 class ships must have at least two, and PC6-PC7 class ships must have at least one, with the manhole located above the deepest load line. This regulation directly leads to an increase in the height of the ice tank top structure, resulting in the use of more structural materials and a significant increase in construction costs and ship weight.

[0003] During polar voyages, sea ice clogging the seawater tank inlet is a highly dangerous and typical malfunction. If the cooling water supply is interrupted, the main generator may shut down, easily leading to serious accidents such as grounding. Furthermore, extreme cold weather weakens the ship's stability and causes pipelines and equipment to freeze, threatening navigational safety from all angles.

[0004] To address ice clogging, the conventional approach is to extend the ice's path, allowing it sufficient time to rise. Therefore, one existing solution places the intake of the main seawater pipe at the bottom of the tank, away from the side inlets. However, this height-increasing, capacity-enhancing solution has significant drawbacks: it not only makes the tank structure bulky, but its complex piping layout also struggles to meet the engine room space constraints of various commercial vessel types (such as bulk carriers and container ships). Utility Model Content

[0005] To address the above shortcomings and deficiencies, this utility model provides a ship engine room ice water tank structure that saves on structural materials and construction costs by sharing bulkheads with the ship's existing structure; and by setting up a dike to prevent crushed ice entering the seawater tank from being sucked into the seawater main pipe.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A ship engine room ice water tank structure, wherein the bottom edges of each side wall of the ice water tank are connected to the inner surface of the ship's hull plate; the top plate of the ice water tank is connected to a vertically extending ice water tank channel; the ice water tank channel also serves as a crushed ice collection area; the ice water tank channel is adjacent to the engine room escape passage and shares a bulkhead.

[0008] The bottom of the ice water tank has multiple seagates on the ship's hull plating, and each seagate is equipped with a grille. A seawater main pipe is installed on one side wall of the ice water tank, and a vertical cofferdam is installed between the side wall and the seagate to prevent ice fragments in the seawater from directly entering the seawater main pipe through the seagate. The top edge of the cofferdam is lower than the lowest liquid level of the ice water tank.

[0009] A further improvement of this invention is that the ice water tank and the ice water tank passage are located inside the ship's cabin.

[0010] A further improvement of this utility model is that the cofferdam baffle plate is parallel to the side wall where the seawater main pipe is located, and the cofferdam baffle plate is provided with a bend, with the area from the bend upward tilting toward the side where the seabed gate is located.

[0011] A further improvement of this invention is that the bending angle of the bent portion is 15° to 18°.

[0012] A further improvement of this invention is that the ratio of the total area of ​​the submarine gate to the cross-sectional area of ​​the seawater main pipe is 5 to 8.

[0013] A further improvement of this invention is that the seawater main pipe is connected to the cooling system, and a return water pipe is connected to the top of the ice water tank for using the return water from the cooling system to melt the crushed ice.

[0014] A further improvement of this utility model is that the ice water tank channel is adjacent to the cabin wall, and the cabin wall serves as the side wall for the ice water tank channel.

[0015] A further improvement of this invention is that the ice water tank channel is equipped with a ladder.

[0016] A further improvement of this utility model is that the interior of the ice water tank is provided with a purging pipe, which is connected to a steam source or a compressed air source for purging the inner surface of the ice water tank.

[0017] A further improvement of this invention is that the top of the ice water tank channel extends to the ship's control room or maintenance workshop.

[0018] The beneficial effects of this utility model include:

[0019] (1) The design of the cofferdam's water-retaining plate, especially its bend with a specific angle (15°-18°), constitutes a physical barrier. It can effectively block ice fragments from entering from the seabed gate and guide the ice fragments to float upwards using the inclined surface, greatly reducing the risk of ice fragments being directly sucked into the seawater main;

[0020] (2) By placing the ice water tank passage adjacent to the cabin escape passage and sharing a bulkhead, and by sharing one side wall of the ice water tank passage with the cabin bulkhead, this integrated design directly saves the need for multiple independent bulkheads required to construct the ice water tank passage. This not only reduces the amount of materials used, but also lowers the corresponding construction costs and time for welding, assembly, etc.

[0021] (3) The design of the ice water tank and the side wall of the passage not being directly attached to the outer plate reduces the direct heat conduction of the extremely cold seawater outside, which helps to maintain the temperature inside the tank and prevent freezing. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the ship engine room ice water tank structure of this utility model;

[0023] Figure 2 This is a top view schematic diagram of the ship engine room ice water tank structure of this utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of the ship engine room ice water tank structure according to the present invention;

[0025] Figure 4 This is a schematic diagram of the ice water tank passage in the machine repair shop and the top cover of the escape passage in the engine room. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, an embodiment of this utility model provides a ship engine room ice water tank structure, wherein the bottom edge of each side wall 11 of the ice water tank 10 is sealed to the inner surface of the ship hull plate 50 by welding; the top plate of the ice water tank 10 is sealed to the vertically extending ice water tank channel 30.

[0028] The bottom hull plate 50 of the ice water tank 10 has multiple seagates 52, each equipped with a grille, allowing seawater from the outside of the hull plate 50 to enter the ice water tank 10. A seawater main pipe 12 is located on a side wall 11 adjacent to the engine room of the ice water tank 10. A vertical cofferdam baffle 13 is installed between this side wall and the seagate to prevent ice fragments from directly entering the seawater main pipe 12 through the seagate 52. The top edge of the cofferdam baffle 13 is lower than the lowest liquid level of the ice water tank 10.

[0029] Seawater from outside the ship enters the ice tank through the seabed gate 52 and is drawn in by the seawater main pipe 12 to cool the equipment in the engine room. The cofferdam baffle 13 prevents ice fragments from passing through the seabed gate 52 and being directly sucked into the seawater main pipe 12.

[0030] Seawater from the seagate 51 must bypass the top edge of the cofferdam baffle 13 before being drawn into the seawater main pipe 12. The cofferdam baffle 13 runs parallel to the sidewall 11 where the seawater main pipe 12 is located, and the cofferdam baffle 13 has a bend. The area upward from the bend slopes towards the side where the seagate 52 is located. This slope can guide ice fragments, causing them to float upward at an angle, further reducing the total amount of ice fragments drawn into the seawater main pipe 12. In one specific embodiment, the bend angle is 15° to 18°. The ratio of the total area of ​​the seagate 52 to the cross-sectional area of ​​the seawater main pipe 12 is 5 to 8. This lateral arrangement and height of the seawater main pipe 12 facilitates the connection of downstream valves and cooling equipment.

[0031] Because of its low density, the crushed ice entering the ice water tank 10 will float upwards. The ice water tank channel 30 is connected to the ice water tank, and its bottom allows the crushed ice to accumulate. In this embodiment, the seawater main pipe 12 is connected to the cooling system. To reduce the impact of the crushed ice, a return water pipe 14 is connected to the top of the ice water tank 10 to inject part of the return water from the cooling system into the top of the ice water tank to melt the crushed ice.

[0032] In this embodiment, the ice water tank 10 and the ice water tank channel 30 are located inside the ship's cabin. Except for the bottom edge of the ice water tank 10, other parts are separated from the ship's hull by gaps and are not directly connected to it, so as to avoid the impact of the low temperature seawater from the outside on the melting of the ice fragments in the channel structure and to prevent freezing.

[0033] In this embodiment, the ice water tank passage 30 is adjacent to the cabin bulkhead 53 on at least one side, and the cabin bulkhead 53 serves as the sidewall of the ice water tank passage 30. The ice water tank passage 30 is adjacent to the cabin escape passage 51 and shares a bulkhead. This structure can effectively reduce the materials and labor required during the construction of the ice water tank passage 30. In addition, with this structure where the ice water tank passage 30 is combined with the ice water tank 10, the bottom of the ice water tank passage 30 can serve as part of the ice water tank 10, accommodating seawater and ice chips; this structure can reduce the volume of the ice water tank 10, and the top surface of the ice water tank does not need to extend above the deepest load line.

[0034] In one specific embodiment, the ice water tank channel 30 is equipped with a ladder 31. The top of the ice water tank channel 30 needs to be located above the deepest load-bearing water line. Figure 4 As shown, in this embodiment, the top of the ice water tank passage 30 of an ice water tank 10 extends into the machine repair room, and a hatch is provided at the top of the passage, which is adjacent to the hatch of the cabin escape passage 51.

[0035] The chilled water tank 10 is equipped with a purge pipe 15, which is fixed inside the chilled water tank 10 by a bracket. The purge pipe 15 is connected to a steam source or a compressed air source and is used to purge the inner surface of the chilled water tank 10 with steam or compressed air. This function can be used during ship maintenance.

[0036] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A structure for a ship's engine room ice water tank, characterized in that, The bottom edges of each sidewall (11) of the ice water tank (10) are connected to the inner surface of the ship's hull plate (50); the top plate of the ice water tank (10) is connected to the vertically extending ice water tank channel (30); the ice water tank channel (30) also serves as a crushed ice accumulation area; the ice water tank channel (30) is adjacent to the engine room escape passage (51) and shares a bulkhead; The bottom of the ice water tank (10) has multiple seagates (52) on the ship hull plate (50), and the seagates (52) are equipped with grilles; a seawater main pipe (12) is provided on one side wall (11) of the ice water tank (10), and a vertical cofferdam baffle plate (13) is provided between the side wall and the seagate to prevent ice fragments in the seawater from directly entering the seawater main pipe (12) through the seagate (52); the top edge of the cofferdam baffle plate (13) is lower than the lowest liquid level of the ice water tank (10).

2. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The ice water tank (10) and the ice water tank passage (30) are located inside the ship's cabin.

3. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The cofferdam baffle plate (13) is parallel to the side wall (11) where the seawater main pipe (12) is located, and the cofferdam baffle plate (13) is provided with a bend, and the area from the bend upwards is inclined toward the side where the seabed gate (52) is located.

4. The structure of a ship engine room ice water tank according to claim 3, characterized in that, The angle of the bend is 15° to 18°.

5. The structure of a ship engine room ice water tank according to claim 3, characterized in that, The ratio of the total area of ​​the submarine gate (52) to the cross-sectional area of ​​the seawater main pipe (12) is 5 to 8.

6. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The seawater main pipe (12) is connected to the cooling system, and a return water pipe (14) is connected to the top of the ice water tank (10) for using the return water from the cooling system to melt the crushed ice.

7. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The ice water tank passage (30) is adjacent to the cabin bulkhead (53), and the ice water tank passage (30) uses the cabin bulkhead (53) as its sidewall.

8. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The ice water tank channel (30) is equipped with a ladder (31).

9. The structure of a ship engine room ice water tank according to claim 1, characterized in that, The ice water tank (10) is equipped with a purge pipe (15) inside, which is connected to a steam source or a compressed air source for purging the inner surface of the ice water tank (10).

10. The structure of a ship's engine room ice water tank according to claim 1, characterized in that, The top of the ice water tank passage (30) extends to the ship's central control room or machine shop.

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