Anti-rolling water tank device of ship
By designing anti-roll tank devices on ships, the reverse heeling moment is generated by the change in the center of gravity of ballast water, which solves the rolling problem of shallow-draft ships in bad sea conditions and achieves the effect of reducing the rolling angle and improving the ability to resist wind and waves.
Patent Information
- Application Number
- CN202520733236.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-17
AI Technical Summary
Shallow-draft vessels experience excessive rolling angles in rough sea conditions, which can hinder lifting operations.
Design a ship roll reduction tank device. By loading ballast water into the left and right roll reduction tanks and the connecting tank, the change in the center of gravity of the ballast water generates a reverse roll moment. Combined with the control of air flow velocity through the vents, the flow of ballast water is restricted, thereby reducing the roll angle.
It effectively reduces the ship's roll angle, improves its resistance to wind and waves, and has a simple, easy-to-implement, low-cost, and maintenance-free structure.
Smart Images
Figure CN223905267U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of crane ship, especially relates to a ship's anti-rolling tank device. BACKGROUND
[0002] The shallow-draft ship usually has the characteristics of wide type and shallow draft, and the transverse stability is too high to be beneficial to the engineering ship operation, such as crane ship. The engineering ship is affected by wind and wave during operation, and a certain period of roll is generated. The large roll angle can cause the hook to swing violently, and the crane operation cannot be carried out.
[0003] The utility model aims at designing a shallow-draft ship's anti-rolling tank device to reduce the roll angle of the ship, increase the wind and wave resistance of the engineering ship, and improve the operation performance of the ship in the bad sea condition. SUMMARY
[0004] In view of the defects in the prior art, the utility model aims at providing a ship's anti-rolling tank device.
[0005] To achieve the above-mentioned purpose, the solution adopted by the utility model is as follows:
[0006] The utility model provides a ship's anti-rolling tank device, which comprises a left anti-rolling tank, a right anti-rolling tank and a communication cabin which is in communication with the bottoms of the left anti-rolling tank and the right anti-rolling tank, the left anti-rolling tank and the right anti-rolling tank are of the same height, and the height of the left anti-rolling tank and the right anti-rolling tank is higher than that of the communication cabin, ballast water is loaded in the inside of the anti-rolling tank device, the ballast water can flow left and right in the left anti-rolling tank, the right anti-rolling tank and the communication cabin, the height of the ballast water is higher than that of the communication cabin and lower than that of the left anti-rolling tank and the right anti-rolling tank, and a vent hole is arranged at the top of the left anti-rolling tank and the right anti-rolling tank.
[0007] Preferably, the diameter of the vent hole is set to be greater than 1 / 2 of the roll period of the ship.
[0008] Preferably, a gas permeable pipe is arranged on each of the two vent holes.
[0009] Preferably, the anti-rolling tank device is arranged in the transverse extension direction of the communication cabin and perpendicular to the central axis of the ship.
[0010] Preferably, the ship is a shallow-draft ship.
[0011] Beneficial effects
[0012] The ship's anti-rolling water tank device provided by the utility model utilizes the gravity center change of the ballast water in the cabin to form reverse roll torque, thereby effectively reducing the roll angle of the ship, and through the air flow speed limitation of the size control of the air vent on the anti-rolling water tank, the flow limitation of the ballast water in the cabin and the control of the back-and-forth change time of the ballast water in the left and right cabins are realized, the needs of different ship body roll periods can be met; the device has simple structure, is easy to realize, is low in cost and is maintenance-free. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a structural schematic view of the ship's anti-rolling water tank device related to the utility model.
[0014] Figure 2 It is a structural schematic view of the ship's anti-rolling water tank device related to the utility model when the ship is inclined to the left.
[0015] Figure 3 It is a structural schematic view of the ship's anti-rolling water tank device related to the utility model when the ship is inclined to the right. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0017] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0018] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0019] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, or it is the orientation or position relation that the utility model product uses usually, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" and so on are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0020] In addition, the terms "horizontal", "vertical" and other terms do not mean that the component is absolutely horizontal or overhanging, but can be slightly inclined. As "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0021] In the description of the utility model, it also needs to explain that, unless otherwise specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0022] For this purpose, the following scheme is proposed:
[0023] Referring to Figure 1 The utility model provides a kind of anti-rolling tank device 100 of ship, including left anti-rolling tank 110, right anti-rolling tank 120 and the communication cabin 130 of the bottom of the communication left anti-rolling tank 110 and right anti-rolling tank 120, left anti-rolling tank 110 and right anti-rolling tank 120 are equal height, and height is higher than communication cabin 130, inside the anti-rolling tank device is loaded ballast water 140, the ballast water 140 can flow left and right in left anti-rolling tank 110, right anti-rolling tank 120 and communication cabin 130, the height of the ballast water 140 is higher than the height of communication cabin 130, lower than the height of left anti-rolling tank 110 and right anti-rolling tank 120, left anti-rolling tank 110 and right anti-rolling tank 120 each are equipped with a gas hole 110a, 120a on top.In some embodiments, a gas-permeable tube 150a, 150b is installed on each of the two gas holes 110a, 120a.
[0024] The stabilizing water tank device 100 of the ship should be arranged such that the transverse extension direction of the communicating cabin 130 is perpendicular to the central axis A of the ship 200, and when the ship tilts left and right (i.e. a repeating period of left tilting, right tilting and left tilting), the stabilizing water tank device 100 is used to change the gravity center of the ballast water 140 in the cabin, thereby forming a reverse tilting moment, so as to effectively reduce the tilting angle of the ship 200.
[0025] Since the larger the ship width is, the larger the tilting moment is, the stabilizing water tank device 100 of the ship provided by the utility model is especially arranged on a shallow-draft ship with a large ship width.
[0026] Specifically, when the ship tilts left under the action of wind and waves, the ballast water 140 in the stabilizing water tank device 100 flows to the left stabilizing water tank 110. Since the diameter of the air vent 120a at the top of the right stabilizing water tank 120 is limited, the amount of air entering the right stabilizing water tank 120 is constant in a short time, so the amount of water flowing from the right stabilizing water tank 120 to the left stabilizing water tank 110 is constant, and a period of time is required. When the ship tilts left ends, the gravity center of the ballast water 140 in the cabin has deviated to the left, and the gravity center is far away from the central axis A of the ship, thereby forming a tilting moment P to the left ship side, as shown in FIG. 4. Figure 2
[0027] When the ship tilts right under the action of wind and waves, the ballast water 140 in the left stabilizing water tank 110 needs a period of time to flow to the right stabilizing water tank 120. During the period of time when the ballast water 140 flows to the right stabilizing water tank 120, the tilting moment P to the left ship side exists, and the tilting moment P to the left ship side and the tilting moment to the right ship side formed by the wind and waves offset each other until the ballast water 140 flows and the gravity center returns to the central axis A of the ship. When the ship continues to tilt right, the ballast water 140 needs a period of time to flow to the right stabilizing water tank 120. When the ship tilts right ends, the gravity center of the ballast water 140 in the cabin has deviated to the right, and the gravity center is far away from the central axis A of the ship, thereby forming a tilting moment S to the right ship side, as shown in FIG. 5. Figure 3
[0028] The roll-reducing water tank device 100 of the ship provided by the utility model utilizes the gravity center change of the ballast water 140 in the cabin to form reverse roll moment, thereby effectively reducing the roll angle of the ship passively. Meanwhile, the diameter size of the air vent 110a, 120a on the roll-reducing water tank is set to the air flow time obtained by dividing the total air flow of the air vent by the air flow rate under the diameter, which is greater than 1 / 2 of the roll period of the ship, specifically, the air flow time should be greater than 20-50% of the roll time, thereby limiting the air flow rate, controlling the time of the ballast water 140 in the cabin from the left roll-reducing water tank 110 to the right roll-reducing water tank 120 (or from the right roll-reducing water tank 120 to the left roll-reducing water tank 110), realizing the flow limitation of the ballast water 140 in the cabin and the control of the back-and-forth change time of the ballast water 140 in the left and right cabins, and meeting the needs of different ship roll periods.
[0029] Generally, the ship has ballast water tanks in use, and the ballast water tanks must be provided with air vents, and only the size of the air vent needs to be selected, and the roll-reducing water tank can be used, the structure is simple, easy to realize, low in cost and maintenance-free.
[0030] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model.
Claims
1. A tank stabilization apparatus for a marine vessel, characterized by, The anti-rolling tank device comprises a left anti-rolling tank, a right anti-rolling tank and a communication tank communicating with the bottoms of the left and right anti-rolling tanks, the left and right anti-rolling tanks are of the same height and higher than the communication tank, ballast water is loaded in the anti-rolling tank device, the ballast water can flow left and right in the left and right anti-rolling tanks and the communication tank, the height of the ballast water is higher than the height of the communication tank and lower than the heights of the left and right anti-rolling tanks, and each of the left and right anti-rolling tanks is provided with a vent hole at the top.
2. Anti-rolling tank arrangement for a ship according to claim 1, characterized in that The diameter of the vent hole is set such that the air flow time obtained by dividing the total air flow of the vent hole by the air flow rate under the diameter is greater than 1 / 2 of the roll period of the ship.
3. Anti-rolling tank apparatus for a ship according to claim 1, characterized in that, A gas-permeable pipe is installed on each of the two vent holes.
4. The anti-rolling tank apparatus of a ship according to claim 1, characterized by, The anti-rolling tank device is arranged such that the transverse extension direction of the communication tank is perpendicular to the central axis of the ship.
5. The anti-rolling tank apparatus of a ship according to claim 1, characterized by, The ship is a shallow-draft ship.