Transverse soaking system applied to multi-person special engineering ship

Abstract

The utility model relates to a transverse water immersion system applied to a multi-person special engineering ship. A communicated pipeline is arranged between bilaterally symmetrical cabins on two sides of the ship, so that the subdivision index is increased, and the final heeling angle of the ship is ensured to be within 15 degrees; the first transverse soaking pipe, the second transverse soaking pipe, the third transverse soaking pipe, the fourth transverse soaking pipe, the fifth transverse soaking pipe and the sixth transverse soaking pipe enable the first empty cabins, the first ballast tanks, the second empty cabins, the third empty cabins, the second ballast tanks and the fourth empty cabins which are in bilateral symmetry on the two sides to be communicated respectively. Compared with the prior art, the special engineering ship has the advantages that the pipelines with proper drift diameters are designed to communicate the bilaterally symmetrical cabins, so that the subdivision index is increased, the final heeling angle of the ship is ensured to be within 15 degrees, and the ship can be protected from being damaged. And enough ship damage stability redundancy can be kept in all stages of achieving balance.

Description

Technical Field

[0001] The utility model relates to the technical field of special engineering ships, in particular to a transverse immersion system applied to multi-person special engineering ships. Background Art

[0002] The wind power operation and maintenance mother ship is an offshore engineering support ship with unlimited navigation area and SPS classification symbol. The ship is equipped with a large number of special engineering personnel. The stability requirements of its operating characteristics are significantly different from those of conventional engineering ships. It needs to meet the damage stability requirements of MSC.235(82) and SOLAS at the same time, and it is necessary to consider the adverse effects of probabilistic damage on the subdivision design. Domestically designed special ships usually adjust the subdivision index by increasing or changing the position of the watertight wall panels of the cabin and optimizing the cabin position to meet the damage stability requirements. However, this will limit the cabin division and cabin layout, and have a great impact on the subsequent equipment ordering and the layout of various professional production designs and subsequent construction. The later pipelines need to be subversively modified.

[0003] At present, the length of domestic offshore engineering support vessels is basically around 50 to 70 meters. The characteristics of this type of special engineering vessel are small space and compact layout. It is difficult to optimize the subdivision index by increasing or changing the position of the watertight wall panels of the cabin and optimizing the cabin position.

[0004] Therefore, this type of ship can optimize the impact of the damage stage by setting up several effective sets of cross-flooding loading, reduce the impact of the bottom system, ballast system, ventilation system, breathability and overflow system on the damage stability, and reduce the subversive modifications required in the later stage of its piping layout. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a transverse immersion system applied to multi-person special engineering ships, which can solve the problem in the prior art that it is difficult for special engineering ships to optimize the subdivision index by adding or changing the position of the watertight wall panels of the cabin and optimizing the cabin position, and that adding or changing the position of the watertight wall panels requires subversive modifications to the pipeline layout in the later stage.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to set up connecting pipes between the left and right symmetrical compartments on both sides of the ship to increase the subdivision index so that the final heel angle of the ship is guaranteed to be within 15°. The specific distribution structure is as follows:

[0007] including a first transverse dip pipe, a second transverse dip pipe, a third transverse dip pipe, a fourth transverse dip pipe, a fifth transverse dip pipe and a sixth transverse dip pipe;

[0008] The first transverse immersion pipe connects the first empty compartments symmetrical on both sides of the ship, and the first transverse immersion pipe passes through the first fresh water tank provided between the two symmetrical first empty compartments;

[0009] The second transverse dip pipe connects the left-right symmetrical first ballast tanks on both sides of the ship, and the second transverse dip pipe passes through the fuel tank provided between the two symmetrical first ballast tanks;

[0010] The third transverse immersion pipe connects the left-right symmetrical second empty compartments on both sides of the ship, and the third transverse immersion pipe passes through the engine room arranged between the two symmetrical second empty compartments;

[0011] The fourth transverse dip pipe connects the third empty compartments symmetrical on both sides of the ship, passes through the engine room arranged between the two symmetrical third empty compartments, and also passes through the fuel tanks arranged on both sides of the engine room;

[0012] The fifth transverse dip pipe connects the left-right symmetrical second ballast tanks on both sides of the ship, and the fifth transverse dip pipe passes through the sewage treatment tank provided between the two symmetrical second ballast tanks;

[0013] The sixth transverse immersion pipe connects the left-right symmetrical fourth empty compartments on both sides of the ship, and the sixth transverse immersion pipe passes through the second fresh water tank set between the two symmetrical fourth empty compartments and the power compartment at the bow.

[0014] Furthermore, the third transverse immersion pipe, the fourth transverse immersion pipe, the fifth transverse immersion pipe and the sixth transverse immersion pipe are respectively provided in two groups.

[0015] Furthermore, a cargo hold is provided on the top of the first empty cabin and the first fresh water tank.

[0016] Furthermore, hydraulic valves are installed on the first transverse immersion pipe, the second transverse immersion pipe, the third transverse immersion pipe, the fourth transverse immersion pipe, the fifth transverse immersion pipe and the sixth transverse immersion pipe respectively.

[0017] After adopting the above structure, the advantages of the utility model are: in view of the fact that special engineering ships are limited by factors such as size and number of people, by designing pipes with suitable diameters to connect the left and right symmetrical compartments, when damage occurs on one side of the ship, seawater is guided from the water intake compartment to the balance compartment through the transverse immersion pipe, so that water enters symmetrically on both sides, the subdivision index is increased, and the final roll angle of the ship is reduced, and the final roll angle is guaranteed to be within 15°, and sufficient ship damage stability redundancy can be maintained in all stages of achieving balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the present utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0021] like Figure 1 As shown, this specific embodiment adopts the following technical solution: connecting pipes are set between the left and right symmetrical compartments on both sides of the ship to increase the subdivision index so that the final heel angle of the ship is guaranteed to be within 15°. The specific distribution structure is as follows:

[0022] It includes a first transverse immersion pipe 1 , a second transverse immersion pipe 2 , a third transverse immersion pipe 3 , a fourth transverse immersion pipe 4 , a fifth transverse immersion pipe 5 and a sixth transverse immersion pipe 6 .

[0023] The first transverse immersion pipe 1 connects the first empty compartments 7 symmetrical on both sides of the ship, and passes through the first fresh water tank 8 set between the two symmetrical first empty compartments 7. Figure 2 As shown, a cargo hold 9 is provided on top of the first empty compartment 7 and the first fresh water tank 8 .

[0024] The second transverse immersion pipe 2 connects the left-right symmetrical first ballast tanks 10 on both sides of the ship, and the second transverse immersion pipe 2 passes through the fuel tank 11 provided between the two symmetrical first ballast tanks 10 .

[0025] The third transverse immersion pipe 3 connects the left-right symmetrical second empty compartments 12 on both sides of the ship, and passes through the engine room 13 provided between the two symmetrical second empty compartments 12 .

[0026] The fourth transverse immersion pipe 4 connects the third empty compartments 14 symmetrical on both sides of the ship. The fourth transverse immersion pipe 4 passes through the engine room 13 arranged between the two symmetrical third empty compartments 14, and the fourth transverse immersion pipe 4 also passes through the fuel tanks 15 arranged on both sides of the engine room 13.

[0027] The fifth transverse immersion pipe 5 connects the left-right symmetrical second ballast tanks 16 on both sides of the ship, and the fifth transverse immersion pipe 5 passes through the sewage treatment tank 17 provided between the two symmetrical second ballast tanks 16 .

[0028] The sixth transverse immersion pipe 6 connects the left-right symmetrical fourth empty compartments 18 on both sides of the ship. The sixth transverse immersion pipe 6 passes through the second fresh water tank 19 set between the two symmetrical fourth empty compartments 18 and the power compartment 20 at the bow.

[0029] The third transverse immersion pipe 3, the fourth transverse immersion pipe 4, the fifth transverse immersion pipe 5 and the sixth transverse immersion pipe 6 are respectively provided with two groups, and hydraulic valves are respectively installed on the first transverse immersion pipe 1, the second transverse immersion pipe 2, the third transverse immersion pipe 3, the fourth transverse immersion pipe 4, the fifth transverse immersion pipe 5 and the sixth transverse immersion pipe 6.

[0030] Working principle: The wind power operation and maintenance mother ship has a small engine room and shuttles inside the wind farm for a long time. Therefore, the size of the main ship is limited and the rated passenger capacity is 100 people. The cabin layout is compact and it is impossible to limit the cabin layout to meet the probability of damage requirements. For special engineering ships limited by factors such as size and passenger capacity, in order to increase the redundancy of ship damage stability, the first transverse immersion pipe 1, the second transverse immersion pipe 2, the third transverse immersion pipe 3, the fourth transverse immersion pipe 4, the fifth transverse immersion pipe 5 and the sixth transverse immersion pipe 6 with appropriate diameters are designed to be symmetrical on the left and right. The first empty compartments 7, the first ballast compartments 10, the second empty compartments 12, the third empty compartments 14, the second ballast compartments 16, and the fourth empty compartments 18 are connected to ensure the subdivision index of the ship and reduce the final roll angle of the ship. When damage occurs on one side of the ship, seawater is guided from the flooded compartment to the balance compartment through the transverse flooding pipe, so that water is symmetrically flooded on both sides to ensure that the final roll angle of the ship is within 15° when capsizing, and sufficient damage stability redundancy of the ship can be maintained in all stages of achieving balance.

[0031] Before setting, it is necessary to divide the damaged area of ​​the target special engineering ship. Since the cabins of special engineering ships are densely arranged and designed to be non-watertight in many places, it is necessary to consider the impact of the intermediate flooding stage on the subdivision index. According to the subdivision index required for probabilistic damage, the target ship needs to be divided into several damaged areas; then calculate the pipe diameter and pipe layout principles used in the cross-flooding system. According to the requirements of the specification, when the total air vent cross-sectional area is greater than or equal to 10% of the cross-sectional area of ​​the cross-flooding system, the blocking effect of air back pressure on flooding can be ignored in the cross-flooding calculation. In actual layout, the connecting pipe should be reduced as much as possible. The friction coefficient is reduced, and the arrangement of bends and elbows is minimized; a pipe-type transverse flooding system is then set up to reduce the impact of the intermediate stage of damage on the damage stability. The target ship is equipped with 20 pairs of cabins symmetrically distributed on the port and starboard sides. Through calculations with NAPA software, 10 sets of transverse flooding pipes are set up. Under the same other damage conditions, the installation of the transverse flooding system increases the subdivision index by 12%, and can always control the heel angle within 15° in the case of intermediate damage. The whole process of transverse balance takes no more than 60 seconds. As the damaged area increases, the intermediate heel angle increases, and the subdivision index increases more significantly.

[0032] In summary, the use of a transverse flooding system on large special engineering vessels can effectively improve the subdivision index without changing the cabin layout. Against the backdrop of SOLAS 2020's increased requirements for damage stability, the application of a transverse flooding system can significantly reduce the impact of the piping system on damage stability and reduce the need for disruptive modifications to the piping in the later stages.

[0033] The above shows and describes the basic principles and main features of the present invention, as well as the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A transverse immersion system for multi-person special engineering vessels, characterized by: Connecting pipes are installed between the symmetrical compartments on both sides of the ship to increase the subdivision index so that the final heel angle of the ship is guaranteed to be within 15°. The specific distribution structure is as follows: including a first transverse dip pipe, a second transverse dip pipe, a third transverse dip pipe, a fourth transverse dip pipe, a fifth transverse dip pipe and a sixth transverse dip pipe; The first transverse immersion pipe connects the first empty compartments symmetrical on both sides of the ship, and the first transverse immersion pipe passes through the first fresh water tank provided between the two symmetrical first empty compartments; The second transverse dip pipe connects the left-right symmetrical first ballast tanks on both sides of the ship, and the second transverse dip pipe passes through the fuel tank provided between the two symmetrical first ballast tanks; The third transverse immersion pipe connects the left-right symmetrical second empty compartments on both sides of the ship, and the third transverse immersion pipe passes through the engine room arranged between the two symmetrical second empty compartments; The fourth transverse dip pipe connects the third empty compartments symmetrical on both sides of the ship, passes through the engine room arranged between the two symmetrical third empty compartments, and also passes through the fuel tanks arranged on both sides of the engine room; The fifth transverse dip pipe connects the left-right symmetrical second ballast tanks on both sides of the ship, and the fifth transverse dip pipe passes through the sewage treatment tank provided between the two symmetrical second ballast tanks; The sixth transverse immersion pipe connects the left-right symmetrical fourth empty compartments on both sides of the ship, and the sixth transverse immersion pipe passes through the second fresh water tank set between the two symmetrical fourth empty compartments and the power compartment at the bow.

2. The transverse immersion system for a multi-person special engineering vessel according to claim 1, characterized in that: The third transverse immersion pipe, the fourth transverse immersion pipe, the fifth transverse immersion pipe and the sixth transverse immersion pipe are respectively provided in two groups.

3. The transverse immersion system for a multi-person special engineering vessel according to claim 1, characterized in that: A cargo hold is provided on the top of the first empty compartment and the first fresh water tank.

4. The transverse immersion system for a multi-person special engineering vessel according to claim 1, characterized in that: The first transverse immersion pipe, the second transverse immersion pipe, the third transverse immersion pipe, the fourth transverse immersion pipe, the fifth transverse immersion pipe and the sixth transverse immersion pipe are respectively installed with hydraulic valves.

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