C-shaped liquid tank gas ship cargo hold

Abstract

The invention relates to a C-shaped liquid tank gas ship cargo hold which comprises a liquid tank cabin used for storing a C-shaped liquid tank, and the front end and the rear end of the C-shaped liquid tank are hemispherical end sockets. A communicating space is formed between the outer wall of the lower half part of the hemispherical seal head at the front end of the C-shaped liquid tank and the inner wall of the front end of the liquid tank cabin and / or between the outer wall of the lower half part of the hemispherical seal head at the rear end of the C-shaped liquid tank and the inner wall of the rear end of the liquid tank cabin; the port ballast tank is positioned on the left lower side of the liquid tank tank; the starboard ballast tank is positioned on the right lower side of the liquid tank tank; the transverse communicating device is arranged in the communicating space, the transverse communicating device comprises a communicating pipeline, one end of the communicating pipeline is communicated with the larboard ballast tank, and the other end of the communicating pipeline is communicated with the starboard ballast tank. According to the C-shaped liquid tank gas ship cargo hold, the design working condition of a ship can be conveniently adjusted, the ship is more flexible, and meanwhile the rolling amplitude of the ship can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of ships, and specifically to a cargo hold of a C-type liquid tank gas ship. Background Art

[0002] The ballast tank is a very important type of compartment in ship design. There are liquid tank compartments arranged in the front and back in the cargo hold area, and each liquid tank compartment is independent of each other. By adjusting the ballast water volume and distribution in the ballast tank, the center of gravity position and floating state of the ship can be controlled, so as to meet the operating conditions required for various loading needs of the ship. The port and starboard compartments (ballast tanks or void spaces) are designed as symmetric port and starboard independent compartments to accommodate ballast water according to the overall ship stability calculation requirements for single-bottom ships, such as Figure 1 shown, can be designed as symmetric port and starboard independent compartments to accommodate ballast water, that is, the port ballast tank and the starboard ballast tank. However, since the port and starboard independent compartments are independent of each other and cannot be connected, the ship will still experience large swings in rough seas.

[0003] In addition, when the ship has a double bottom, its structure is as shown in Figure 2 and Figure 3 shown. The cargo hold area is the main area for storing and transporting goods. The side and double-bottom areas of the cargo hold area can be used as multiple independent ballast tanks or void spaces arranged in the front and back according to the overall layout and stability calculation requirements. The front and back of the cargo hold area are independent engine room areas and bow thruster compartments. When the cargo hold area is designed to store non-dangerous goods, the cargo hold area is a non-dangerous place. Considering factors such as meeting the needs of operating personnel to pass through the entire cargo hold area front and back or the layout of ventilation pipes / cables, an independent void space F that runs through the front and back is arranged below the main deck in the double-hull area on the side, but this void space area cannot extend to the tail engine room or the bow thruster compartment at the front. At this time, the operating personnel enter the independent void space or ballast tank directly through the hatch covers on the main deck / platform deck, and the void space ventilation pipe can directly pass through the main deck and communicate with the outside, meeting the requirements of the code design. At this time, the double-bottom area can be used as an independent ballast tank or void space. According to the design requirements, to connect the port and starboard ballast tanks, only the watertight bulkhead of the double-bottom compartment needs to be opened. When the cargo hold area is designed to store dangerous goods, such as when it is necessary to load a C-type liquid tank (for storing fuel) in the cargo hold area, the cargo hold area is a dangerous place, but there are a tail engine room or a bow thruster compartment with a height equivalent to that of the independent void space arranged in the front and back of the cargo hold area. Therefore, it is impossible to keep the void space ventilation pipe away from the dangerous place in the cargo hold area. Summary of the Invention

[0004] The present invention provides a cargo hold of a C-type liquid tank gas ship, which facilitates the design conditions of load adjustment of the ship, makes it more flexible, and at the same time can reduce the rolling amplitude of the ship.

[0005] The cargo hold of the C-type liquid tank gas ship of the present invention includes:

[0006] A liquid tank compartment for storing a Type C liquid tank, with the front and rear ends of the Type C liquid tank being hemispherical heads. A communication space is formed between the outer wall of the lower half of the hemispherical head at the front end of the Type C liquid tank and the inner wall at the front end of the liquid tank compartment and / or between the outer wall of the lower half of the hemispherical head at the rear end of the Type C liquid tank and the inner wall at the rear end of the liquid tank compartment;

[0007] A starboard ballast tank located on the lower left side of the liquid tank compartment;

[0008] A port ballast tank located on the lower right side of the liquid tank compartment;

[0009] A transverse communication device arranged in the communication space. The transverse communication device includes a communication pipe. One end of the communication pipe communicates with the starboard ballast tank, and the other end of the communication pipe communicates with the port ballast tank.

[0010] Preferably, the cargo hold further includes a double-bottom void space that runs through the entire cargo hold area in the front-to-back direction. The ends of the double-bottom void space extend in the front-to-back direction to the double-bottom area below the aft engine room and / or below the forward side thruster compartment. The Type C liquid tank gas carrier cargo hold further includes a void space ventilation pipe. One end of the void space ventilation pipe is connected to the top of the part of the double-bottom void space located below the aft engine room and / or below the forward side thruster compartment, and the other end extends out from the deck of the gas carrier.

[0011] Preferably, the double-bottom void space extends 2 - 3 frame spaces in the front-to-back direction below the aft engine room and / or below the forward side thruster compartment.

[0012] Preferably, pipelines and / or cables extending in the front-to-back direction are arranged in the double-bottom void space.

[0013] Preferably, the transverse communication device includes a communication pipe. Communication plates perpendicular to the communication pipe are respectively provided at the opening of the communication pipe near the starboard ballast tank and at the opening near the port ballast tank. The communication plates are provided with a plurality of communication holes for communicating the communication pipe with the starboard ballast tank or communicating the communication pipe with the port ballast tank.

[0014] Preferably, the transverse communication device includes a communication pipe and a communication valve arranged in the communication pipe for controlling whether the starboard ballast tank and the port ballast tank are communicated.

[0015] Preferably, a communication valve is respectively provided at the opening of the communication pipe near its connection with the starboard ballast tank and at the opening near its connection with the port ballast tank.

[0016] Preferably, the cargo hold is provided with an inclination sensor for detecting the inclination angle of the ship and a controller for receiving the data of the inclination sensor and controlling the state of the communication valve according to the data.

[0017] Preferably, the connecting pipe is fixed to the bottom wall and / or side wall of the liquid tank compartment.

[0018] Preferably, the cross-section of the connecting pipe is circular or rectangular.

[0019] Compared with the prior art, the present invention has the following beneficial effects: By connecting the starboard ballast tank and the port ballast tank through the connecting pipe of the lateral connection device, the ballast water can flow between the starboard ballast tank and the port ballast tank, so that the starboard ballast tank and the port ballast tank can be used as a larger ballast water space, facilitating the design conditions of the load adjustment of the ship and making it more flexible. For example, it is convenient to adjust the center of gravity of the ship. In addition, when the ship sways from side to side, the water flows freely between the starboard ballast tank and the port ballast tank, and a roll damping moment is generated through the inertia lag of the water, which can reduce the rolling amplitude of the ship and thus improve the stability of the ship. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram in the main viewing direction of the cargo hold of an existing single-bottom C-type liquid tank gas ship.

[0021] Figure 2 It is a schematic structural diagram in the main viewing direction of the cargo hold of an existing double-bottom C-type liquid tank gas ship.

[0022] Figure 3 For Figure 2 It is a schematic structural diagram of the double-bottom C-type liquid tank gas ship cargo hold in

[0023] Figure 4 It is a schematic structural diagram in the main viewing direction of the cargo hold of a C-type liquid tank gas ship according to an embodiment of the present invention.

[0024] Figure 5 For Figure 4 It is a schematic sectional view of the C-type liquid tank gas ship cargo hold in

[0025] Figure 6 It is a schematic structural diagram in the main viewing direction of the cargo hold of a C-type liquid tank gas ship according to another embodiment of the present invention.

[0026] Figure 7 For Figure 6 It is an enlarged schematic sectional view of the C-type liquid tank gas ship cargo hold in

[0027] Figure 8 For Figure 6 It is a schematic sectional view of the C-type liquid tank gas ship cargo hold in

[0028] Figure 9 For Figure 6 It is a schematic structural diagram in the top view direction of the C-type liquid tank gas ship cargo hold, in which the C-type liquid tank is removed in this figure.

[0029] Reference Numerals

[0030] Figures 1-3

[0031] Ballast tank A on the port side, ballast tank B on the starboard side, double bottom area C, engine room D at the stern, independent void space F, main deck G, platform deck H, type C liquid tank I, void space ventilation pipe J.

[0032] Figures 4-9

[0033] 1 Liquid tank compartment, 11 Bottom plate, 12 Side plate, 13 Connecting space;

[0034] 2 Ballast tank on the port side, 21 Opening;

[0035] 3 Ballast tank on the starboard side, 31 Opening;

[0036] 4 Double bottom void space;

[0037] 5 Liquid tank, 51 Hemispherical head;

[0038] 6 Transverse connecting device, 61 Connecting pipe, 62 Connecting valve, 63 Connecting plate, 64 Connecting hole;

[0039] 7 Engine room at the stern. Detailed implementation manner

[0040] The present invention provides a cargo hold of a type C liquid tank gas carrier, and its implementation example applied to a single-bottom ship is as Figure 4 and Figure 5 shown, including a liquid tank compartment 1, a ballast tank 2 on the port side, a ballast tank 3 on the starboard side and a transverse connecting device 6. The liquid tank compartment 1 is used to store a type C liquid tank 5. The front end and the rear end of the type C liquid tank 5 are hemispherical heads 51. A connecting space 13 is formed between the outer wall of the lower half of the hemispherical head 51 at the front end of the type C liquid tank 5 and the inner wall of the front end of the liquid tank compartment, and between the outer wall of the lower half of the hemispherical head 51 at the rear end and the inner wall of the rear end of the liquid tank compartment 1.

[0041] The port ballast tank 2 is located at the lower left side of the liquid tank compartment 1, and the starboard ballast tank 3 is located at the lower right side of the liquid tank compartment 1. Both the port ballast tank 2 and the starboard ballast tank 3 are used to accommodate the loaded liquid. The port ballast tank 2 is provided with an opening 21, and the starboard ballast tank 3 is provided with an opening 31. One end of the connecting pipe 61 of the transverse connecting device 6 is connected to the opening 21 of the port ballast tank 2, and the other end is connected to the opening 31 of the starboard ballast tank 3, enabling the ballast water to flow between the port ballast tank 2 and the starboard ballast tank 3. Thus, the port ballast tank 2 and the starboard ballast tank 3 can serve as a larger ballast water space, facilitating the adjustment of the designed operating conditions of the ship and making it more flexible. Additionally, when the ship sways from side to side, the water freely flows between the port ballast tank 2 and the starboard ballast tank 3, generating a roll damping moment through inertial lag, which can reduce the rolling amplitude of the ship and thereby improve the stability of the ship.

[0042] In this embodiment, Figure 4 and Figure 5 the shown transverse connecting device 6 can achieve passive roll damping. The connecting pipe 61 of the transverse connecting device 6 is respectively provided with a connecting plate 63 perpendicular to the connecting pipe 61 near the opening 21 of the port ballast tank 2 and near the opening 31 of the starboard ballast tank 3. The connecting plate 63 is provided with a plurality of connecting holes 64 for connecting the connecting pipe 61 with the port ballast tank 2 or connecting the connecting pipe 61 with the starboard ballast tank 3. The arrangement of the connecting plate 63 and the connecting holes 64 enables the port ballast tank 2 and the starboard ballast tank 3 to remain connected, but at the same time reduces the water flow velocity. When the rolling speed of the ship is greater than the water flow velocity, for example, when the ship rolls to the left, the right side of the ship will rise. According to the principle that water flows from high to low, the water in the starboard ballast tank 3 will flow into the port ballast tank 2. The connecting plate 63 reduces the water flow velocity, and a large amount of water remains in the starboard ballast tank 3. The gravity of the water in the starboard ballast tank 3 forces the ship to reduce the rolling amplitude to the left.

[0043] Figures 6-9The C-type liquid tank gas ship cargo hold is shown as a case where the double bottom ship is applied. In this embodiment, the double bottom part of the ship is set as a double bottom empty tank 4 that runs through the entire cargo hold area from front to back, and personnel can pass through it from front to back, and pipes and cables can also be arranged in it. The end of the double bottom empty tank 4 extends to the double bottom area below the rear engine room 7 and / or below the bow thruster cabin in the front and rear direction. The C-type liquid tank gas ship cargo hold also includes an empty tank ventilation pipe (not shown in the figure), one end of which is connected to the top of the double bottom empty tank 4 located below the rear engine room 7 and / or below the bow thruster cabin, and the other end passes through the appropriate position below the rear engine room 7 and / or the bow thruster cabin and extends to the outside of the cabin, avoiding the dangerous area of ​​the cargo hold area and meeting the design specification requirements. The double bottom empty tank 4 extends 2-3 rib distances from the rear engine room and / or below the bow thruster cabin, so that the empty tank ventilation pipe 8 leaves the dangerous place. The rib spacing refers to the distance between two adjacent ribs (Frames) in the hull structure. Ribs are an important component of the hull skeleton. They are arranged at a certain distance along the length of the ship to maintain the shape of the hull and provide the necessary strength and rigidity. The double-bottom empty tank 4 that runs through the front and back hinders the lateral connection between the port ballast tank 2 and the starboard ballast tank 3, but a lateral connecting device 6 is set in the connecting space 13 in the tank tank 1. One end of the connecting pipe 61 of the lateral connecting device 6 is connected to the opening 21 of the port ballast tank 2, and the other end is connected to the opening 31 of the starboard ballast tank 3, which can realize the lateral connection between the port ballast tank 2 and the starboard ballast tank 3. On the basis of meeting the need to set up the double-bottom empty tank 4 that runs through the front and back, the stability of the ship is guaranteed. At the same time, the lateral connecting device 6 does not affect the original ship cabin layout plan, and does not occupy the original ship ballast tank and empty tank use space. Its layout position is flexible and adjustable, and it is convenient for maintenance and replacement.

[0044] like Figure 6 As shown, the transverse communication device 6 includes a communication pipe 61 and a communication valve 62 arranged in the communication pipe 61 for controlling whether the port ballast tank 2 is connected to the starboard ballast tank 3. The communication pipe 61 is provided with a communication valve 62 near the opening 21 between the communication pipe 61 and the port ballast tank 2 and near the opening 31 between the communication pipe 61 and the starboard ballast tank 3. In this embodiment, the cargo hold is provided with an inclination sensor (not shown in the figure) for detecting the inclination angle of the ship and a controller (not shown in the figure) for receiving data from the inclination sensor and controlling the state of the communication valve according to the data. The state of the communication valve 62 includes opening and closing and different opening amplitudes. By controlling the state of the communication valve 62, the communication state between the port ballast tank 2 and the starboard ballast tank 3 can be actively intervened to control the speed of the water flow, thereby realizing active anti-rolling. Of course, the double-decker ship can also be applied to the passive anti-rolling transverse communication device. Similarly, the single-decker ship can also be applied to the active anti-rolling transverse communication device.

[0045] As Figures 6-9 shown, two horizontally connecting devices 6 arranged front and back are respectively provided in the connecting space 13 at the front end and the connecting space 13 at the back end of each C-shaped liquid tank 5. The cross-section of the connecting pipe 61 is circular or rectangular. The connecting pipe 61 is preferably a stainless steel pipe. The connecting pipe 61 can be a prefabricated pipe, which is fixed to the bottom wall 11 or the side wall 12 of the liquid tank compartment 1. The fixing method can be welding. The construction of installing the horizontally connecting device 6 is simple, and the additional cost generated without changing the adjacent structural form is extremely limited. Of course, it is also possible to form the connecting pipe 61 by preparing a steel structure in the shape of a pipe on site in the liquid tank compartment 1.

[0046] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, which also fall within the protection scope of the present invention.

Claims

1. A C-type liquid tank gas ship cargo hold, characterized in that: include: A tank compartment, used for storing C-type tanks, wherein the front and rear ends of the C-type tanks are hemispherical heads, and a communicating space is formed between the outer wall of the lower half of the hemispherical head at the front end of the C-type tank and the inner wall of the front end of the tank compartment and / or between the outer wall of the lower half of the hemispherical head at the rear end and the inner wall of the rear end of the tank compartment; a port ballast tank located on the lower left side of the tank tank; a starboard ballast tank located on the lower right side of the tank tank; A transverse communication device is arranged in the communication space, and the transverse communication device includes a communication pipe, one end of the communication pipe is communicated with the port ballast tank, and the other end of the communication pipe is communicated with the starboard ballast tank.

2. The C-type liquid tank gas ship cargo hold according to claim 1, characterized in that: The cargo hold also includes a double-bottom empty tank that runs through the entire cargo hold area in the fore-and-aft direction, and the end of the double-bottom empty tank extends in the fore-and-aft direction to the double-bottom area below the aft engine room and / or below the bow thruster tank. The C-type liquid tank gas ship cargo hold also includes an empty tank ventilation pipe, one end of the empty tank ventilation pipe is connected to the top of the double-bottom empty tank located below the aft engine room and / or below the bow thruster tank, and the other end extends from the deck of the gas ship.

3. The C-type liquid tank gas ship cargo hold according to claim 1, characterized in that: The double-bottom empty cabin extends 2-3 rib distances forward and backward below the tail cabin and / or below the bow thruster cabin.

4. The C-type liquid tank gas ship cargo hold according to claim 2, characterized in that: Ventilation pipes and / or cables extending forward and backward are arranged in the double-bottom empty cabin.

5. The C-type liquid tank gas ship cargo hold according to claim 1 or 2, characterized in that: The transverse connecting device includes a connecting pipe, and the connecting pipe is respectively provided with connecting plates perpendicular to the connecting pipe at its opening close to the port ballast tank and the opening close to the starboard ballast tank, and the connecting plate is provided with a plurality of connecting holes for connecting the connecting pipe with the port ballast tank or connecting the connecting pipe with the starboard ballast tank.

6. The C-type liquid tank gas ship cargo hold according to claim 1 or 2, characterized in that: The transverse communication device comprises a communication pipe and a communication valve arranged in the communication pipe for controlling whether the port ballast tank is connected with the starboard ballast tank.

7. The C-type liquid tank gas ship cargo hold according to claim 6, characterized in that: The communicating pipe is provided with a communicating valve near its opening with the port ballast tank and near its opening with the starboard ballast tank respectively.

8. The C-type liquid tank gas ship cargo hold according to claim 6, characterized in that: The cargo hold is provided with an inclination sensor for detecting the inclination angle of the ship and a controller for receiving data from the inclination sensor and controlling the state of the connecting valve according to the data.

9. The C-type liquid tank gas ship cargo hold according to claim 1 or 2, characterized in that: The communicating pipe is fixed to the bottom wall and / or the side wall of the liquid tank compartment.

10. The C-type liquid tank gas ship cargo hold according to claim 1, characterized in that: The cross section of the communicating pipe is circular or rectangular.

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