Longitudinal attitude adjusting system for icebreaker and control method

Abstract

The invention discloses an icebreaker longitudinal attitude adjusting system and a control method, and belongs to the technical field of icebreakers. Comprising a first ballast pipeline connected between a bow cabin and a first sea chest; the first load discharging pipeline is connected between the ship bow cabin and the first sea chest; the second ballast pipeline is connected between the stern tank and the second sea chest; the second load discharging pipeline is connected between the stern cabin and the second sea chest; in the first state, the first load discharging pipeline discharges water from the ship bow cabin to the first sea chest, and the second load discharging pipeline sucks water from the second sea chest to the ship stern cabin. And in the second state, the first ballast pipeline sucks water from the first sea chest to the ship bow cabin, and the second load discharging pipeline discharges water from the ship stern cabin to the second sea chest. The device has the beneficial effects that in the ballasting stage, the ballasting pipeline controllably absorbs water from the sea chest to the water tank; and in the load discharging stage, the load discharging pipeline controllably discharges water from the water tank to the sea chest, so that the icebreaker has the autonomous adjusting capacity, and the flexibility of longitudinal posture adjustment is high.

Description

Technical Field

[0001] The present invention relates to the technical field of icebreakers, and particularly to a longitudinal attitude adjustment system and a control method therefor. Background Art

[0002] Polar research icebreakers play an irreplaceable role in polar ocean survey operations. It is not only the basis and important guarantee for reaching the target area and carrying out ice area ocean survey operations, but also the core force for implementing the two-pole strategic layout and expanding strategic space. According to the difference in icebreaking methods, the icebreaking modes of icebreakers are divided into continuous icebreaking mode and ramming icebreaking mode. However, in either mode, the hull will tilt during icebreaking operations, which urgently requires rapid adjustment of the ship's attitude to ensure the smooth progress of icebreaking operations and the safety of the ship.

[0003] Currently, the design of the attitude adjustment and ballast auxiliary system mostly relies on a pair of anti-rolling water tanks arranged horizontally. With the help of a powerful pumping system, the ballast water is quickly transferred on both sides of the hull to change the weight distribution of the hull, so as to make the hull swing left and right to break free from the ice layer. However, this existing design has obvious deficiencies. It seriously ignores the key role of the longitudinal inclination angle in ship icebreaking. When facing navigation areas with different ice thicknesses, the bow angle of the ship cannot be autonomously adjusted according to the change of the icebreaking task scenario, and it cannot meet the different requirements of the ship's longitudinal attitude in different operation scenarios. Summary of the Invention

[0004] The purpose of the present invention is to provide a longitudinal attitude adjustment system for an icebreaker to solve the above technical problems;

[0005] The purpose of the present invention is also to provide a control method for a longitudinal attitude adjustment system of an icebreaker to solve the above technical problems;

[0006] A longitudinal attitude adjustment system for an icebreaker includes:

[0007] A first ballast pipeline controllably connected between the bow cabin and the first sea gate;

[0008] A first deballast pipeline controllably connected between the bow cabin and the first sea gate;

[0009] A second ballast pipeline controllably connected between the stern cabin and the second sea gate;

[0010] A second deballast pipeline controllably connected between the stern cabin and the second sea gate;

[0011] In the first state, the first ballast pipe can be controllably drained from the bow cabin to the first sea valve, and the second ballast pipe can be controllably sucked water from the second sea valve to the stern cabin; in the second state, the first ballast pipe can be controllably sucked water from the first sea valve to the bow cabin, and the second drain pipe can be controllably drained from the stern cabin to the second sea valve.

[0012] Preferably, the first ballast pipe includes,

[0013] A first ballast branch, controllably connected between the first end of the first water pump and the first sea valve;

[0014] A second ballast branch, controllably connected between the second end of the first water pump and the bow cabin;

[0015] A first ballast and drain branch, controllably connected between the bow cabin and the first sea valve.

[0016] Preferably, the first drain pipe includes the first ballast and drain branch, and further includes,

[0017] A first drain branch, controllably connected between the second end of the first water pump and the first sea valve;

[0018] A second drain branch, controllably connected between the first end of the first water pump and the bow cabin.

[0019] Preferably, the second ballast pipe includes,

[0020] A third ballast branch, controllably connected between the first end of the second water pump and the second sea valve;

[0021] A fourth ballast branch, controllably connected between the second end of the second water pump and the stern cabin;

[0022] A second ballast and drain branch, controllably connected between the stern cabin and the second sea valve.

[0023] Preferably, the second drain pipe includes the second ballast and drain branch, and further includes,

[0024] A third drain branch, controllably connected between the second end of the second water pump and the second sea valve;

[0025] A fourth drain branch, controllably connected between the first end of the second water pump and the stern cabin.

[0026] Preferably, it further includes a third state, wherein the first ballast pipeline can be controllably drained from the bow cabin to the first sea bottom door, and the second ballast pipeline can be controllably drained from the stern cabin to the second sea bottom door.

[0027] A control method for an icebreaker longitudinal attitude adjustment system, used to control the icebreaker longitudinal attitude adjustment system, includes

[0028] Step S1, when encountering ice, the first ballast pipeline can be controllably drained from the bow cabin to the first sea bottom door, and the second ballast pipeline can be controllably suctioned from the second sea bottom door to the stern cabin;

[0029] Step S2, the first ballast pipeline can be controllably suctioned from the first sea bottom door to the bow cabin, and the second ballast pipeline can be controllably drained from the stern cabin to the second sea bottom door;

[0030] Step S3, the first ballast pipeline can be controllably drained from the bow cabin to the first sea bottom door, and the second ballast pipeline can be controllably drained from the stern cabin to the second sea bottom door, and the icebreaker sails normally.

[0031] Preferably, step S1 includes

[0032] Step S11, when the icebreaker encounters ice, sequentially conduct the third ballast branch and the fourth ballast branch of the second ballast pipeline to ballast the stern cabin;

[0033] Step S12, sequentially conduct the second ballast branch and the first ballast branch of the first ballast pipeline to de-ballast the bow cabin, and the bow cabin sails onto the ice surface.

[0034] Preferably, step S2 includes

[0035] Step S21, sequentially conduct the first ballast branch and the second ballast branch of the first ballast pipeline to ballast the bow cabin;

[0036] Step S22, sequentially conduct the fourth ballast branch and the third ballast branch of the second ballast pipeline to de-ballast the stern cabin, and crush the ice layer according to the self-gravity of the icebreaker to complete the icebreaking operation.

[0037] Preferably, step S3 includes

[0038] Sequentially conduct the second ballast branch and the first ballast branch to de-ballast the bow cabin, sequentially conduct the fourth ballast branch and the third ballast branch to de-ballast the stern cabin, and the icebreaker sails normally.

[0039] The beneficial effects of the present invention are as follows: During the ballast stage, the ballast pipeline can controllably suck water from the sea chest into the water tank; during the de-ballast stage, the de-ballast pipeline can controllably drain water from the water tank to the sea chest, enabling the icebreaker to have the ability of autonomous adjustment and strong flexibility in longitudinal attitude adjustment. Brief Description of the Drawings

[0040] Figure 1 is a schematic diagram of the longitudinal attitude adjustment system of the icebreaker of the present invention;

[0041] Figure 2 is a schematic diagram of the ballast and de-ballast mechanism of the present invention;

[0042] Figure 3 is a step diagram of the control method of the longitudinal attitude adjustment system of the icebreaker of the present invention;

[0043] Figure 4 is a schematic diagram of step S1 of the present invention;

[0044] Figure 5 is a schematic diagram of step S2 of the present invention;

[0045] Figure 6 is a working flow chart of the longitudinal attitude adjustment system during the icebreaking operation of the present invention;

[0046] Figure 7 is a valve control flow chart during the ballast and de-ballast process of the icebreaker of the present invention.

[0047] In the drawings: 1, bow tank; 2, hull; 3, stern tank; 4, first ballast pipeline; 5, first de-ballast pipeline; 6, first sea chest; 7, first water pump; 8, first valve; 9, second valve; 10, third valve; 11, fourth valve; 12, fifth valve. Detailed Embodiments

[0048] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0050] Next, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not limited to the present invention.

[0051] An icebreaker longitudinal attitude adjustment system, referring to Figure 1 、 Figure 2, including,

[0052] The first ballast pipeline 4 is controllably connected between the bow cabin 1 and the first sea valve 6;

[0053] The first deballast pipeline 5 is controllably connected between the bow cabin 1 and the first sea valve 6;

[0054] The second ballast pipeline is controllably connected between the stern cabin 3 and the second sea valve;

[0055] The second deballast pipeline is controllably connected between the stern cabin 3 and the second sea valve;

[0056] In the first state, the first deballast pipeline 5 can controllably drain water from the bow cabin 1 to the first sea valve 6, and the second ballast pipeline can controllably suck water from the second sea valve to the stern cabin 3; in the second state, the first ballast pipeline 4 can controllably suck water from the first sea valve 6 to the bow cabin 1, and the second deballast pipeline can controllably drain water from the stern cabin 3 to the second sea valve.

[0057] Specifically, the present invention provides a longitudinal attitude adjustment system for an icebreaker. When the water tank is in the ballast stage, the ballast pipeline can controllably suck water from the sea valve to the water tank; when the water tank is in the deballast stage, the deballast pipeline can controllably drain water from the water tank to the sea valve, so that the icebreaker has the ability of autonomous adjustment, strong flexibility in longitudinal attitude adjustment, and the water tank includes the bow cabin 1 and the stern cabin 3.

[0058] More specifically, the icebreaker includes a bow cabin 1, a hull 2, and a stern cabin 3 connected in sequence. The bow cabin 1 and the stern cabin 3 are provided with ballast and deballast mechanisms with the same structure, and the ballast and deballast mechanisms include a ballast pipeline and a deballast pipeline.

[0059] Refer to Figure 2 , taking the ballast and deballast mechanism connected to the bow cabin 1 as an example, (the ballast and deballast mechanism connected to the stern cabin 3 is not shown, but has the same structure), the first ballast pipeline 4 includes,

[0060] The first ballast branch is controllably connected between the first end of the first water pump 7 and the first sea valve 6;

[0061] The second ballast branch is controllably connected between the second end of the first water pump 7 and the bow cabin 1;

[0062] The first ballast and deballast branch is controllably connected between the bow cabin 1 and the first sea valve 6;

[0063] The first deballast pipeline 5 includes the first ballast and deballast branch, and further includes,

[0064] The first deballast branch is controllably connected between the second end of the first water pump 7 and the first sea valve 6;

[0065] The second ballast branch is controllably connected between the first end of the first water pump 7 and the bow cabin 1;

[0066] The second ballast pipeline includes

[0067] The third ballast branch is controllably connected between the first end of the second water pump and the second sea chest;

[0068] The fourth ballast branch is controllably connected between the second end of the second water pump and the stern cabin 3;

[0069] The second ballast and drainage branch is controllably connected between the stern cabin 3 and the second sea chest;

[0070] The second drainage pipeline includes the second ballast and drainage branch, and also includes

[0071] The third drainage branch is controllably connected between the second end of the second water pump and the second sea chest;

[0072] The fourth drainage branch is controllably connected between the first end of the second water pump and the stern cabin 3.

[0073] Specifically, the ballast pipeline and the drainage pipeline share a first water pump 7.

[0074] Each cabin has a water pump to realize an icebreaker in the form of one pump per cabin. The water pump is a ballast pump, enabling the bow cabin 1 and the stern cabin 3 to support the longitudinal attitude adjustment of the icebreaking ship and helping the icebreaker to better complete the icebreaking process.

[0075] Each water pump is independent of each other and does not affect each other, avoiding the influence on the operation of other water pumps due to the failure of one water pump.

[0076] Each water tank only needs to be equipped with one water pump to support both the ballast and drainage processes simultaneously, greatly saving the layout space and cost of the icebreaker.

[0077] Further specifically, a first valve 8 is provided on the first ballast branch, a second valve 9 is provided on the second ballast branch, a fourth valve 11 is provided on the first drainage branch, and a third valve 10 is provided on the second drainage branch.

[0078] The first end of the first valve 8 is connected to the first sea chest 6, and the second end of the first valve 8 is connected to the first water pump 7;

[0079] The first end of the second valve 9 is connected to the first water pump 7, and the second end of the second valve 9 is connected to the bow cabin 1;

[0080] The first end of the third valve 10 is connected to the bow cabin 1, and the second end of the third valve 10 is connected to the first water pump 7;

[0081] The first end of the fourth valve 11 is connected to the first water pump 7, and the second end of the fourth valve 11 is connected to the first sea chest 6;

[0082] A fifth valve 12 is provided on the first ballast discharge branch, which is connected between the bow cabin 1 and the first sea chest 6.

[0083] The first valve 8, the second valve 9, the third valve 10, and the fourth valve 11 cooperate with the ballast pump to enable a single ballast pump to support the ballasting and discharging processes of the ballast tank simultaneously.

[0084] Refer to Figure 7 , during the ballast stage, the first valve 8, the first water pump 7, and the second valve 9 are sequentially turned on, the third valve 10, the fourth valve 11, and the fifth valve 12 are closed, and water is sucked from the sea chest into the bow cabin 1 through the ballast pipeline.

[0085] During the discharging stage, the third valve 10, the first water pump 7, and the fourth valve 11 are sequentially turned on, the first valve 8, the second valve 9, and the fifth valve 12 are closed, and water is drained from the bow cabin 1 to the sea chest through the discharge pipeline.

[0086] In a preferred embodiment, there is also a third state. The first discharge pipeline 5 can controllably drain water from the bow cabin 1 to the first sea chest 6, and the second discharge pipeline can controllably drain water from the stern cabin 3 to the second sea chest.

[0087] A control method for the longitudinal attitude adjustment system of an icebreaker, which is used to control the longitudinal attitude adjustment system of the icebreaker. Refer to Figure 3 , Figure 6 , including,

[0088] Step S1, when hitting the ice layer, the first discharge pipeline 5 can controllably drain water from the bow cabin 1 to the first sea chest 6, and the second ballast pipeline can controllably suck water from the second sea chest to the stern cabin 3;

[0089] Step S2, the first ballast pipeline 4 can controllably suck water from the first sea chest 6 to the bow cabin 1, and the second discharge pipeline can controllably drain water from the stern cabin 3 to the second sea chest;

[0090] Step S3, the first discharge pipeline 5 can controllably drain water from the bow cabin 1 to the first sea chest 6, and the second discharge pipeline can controllably drain water from the stern cabin 3 to the second sea chest, and the icebreaker sails normally.

[0091] Specifically, the present invention also provides a control method for the longitudinal attitude adjustment system of an icebreaker. During the ballast stage, water is sucked from the sea chest into the water tank through the ballast pipeline. During the discharging stage, water is drained from the water tank to the sea chest through the discharge pipeline, so that the icebreaker has the ability of autonomous adjustment and strong flexibility in longitudinal attitude adjustment.

[0092] During the ballasting and de-ballasting processes, the weights of the bow tank 1 and the stern tank 3 are adjusted by changing the amount of water in the water tanks. In step S1, the stern tank 3 is ballasted and the bow tank 1 is de-ballasted, causing the center of gravity of the ship to shift backward and the bow of the ship to lift up onto the ice layer; in step S2, the bow tank 1 is ballasted and the stern tank 3 is de-ballasted, with the center of gravity moving forward, and the ice layer is crushed using the gravity concentrated in the bow tank 1; in step S3, the bow tank 1 is de-ballasted and the center of gravity returns to the normal navigation position. According to the principles of the center of gravity of an object and balance, this precise adjustment of the weights of different parts of the ship achieves effective control of the longitudinal attitude of the ship, meeting the different requirements for icebreaking and navigation.

[0093] In a preferred embodiment, referring to Figure 4 , step S1 includes,

[0094] Step S11, when the icebreaker encounters an ice layer, the third ballast branch and the fourth ballast branch of the second ballast pipeline are sequentially conducted to ballast the stern tank 3;

[0095] Step S12, the second de-ballast branch and the first de-ballast branch of the first de-ballast pipeline are sequentially conducted to de-ballast the bow tank 1, and the bow tank 1 sails onto the ice surface.

[0096] Specifically, when performing step S11 to ballast the stern, the water tank absorbs water, the weight of the stern increases, and the center of gravity of the ship shifts backward; when performing step S12 to de-ballast the bow, the weight of the bow decreases.

[0097] According to the principles of the center of gravity and the balance of an object in physics, during this process of one increase and one decrease, the longitudinal attitude of the ship changes, and the bow gradually lifts up and sails onto the ice surface.

[0098] The method of adjusting the attitude by changing the weight distribution of different parts of the ship creates conditions for subsequent crushing of the ice layer using the ship's own gravity. It ensures the stable operation of the entire longitudinal attitude adjustment system during icebreaking operations.

[0099] Each ballast pump is equipped with four valves (the first valve 8, the second valve 9, the third valve 10, the fourth valve 11), and the flow direction of the water is controlled by the conduction and closing of the valves.

[0100] Through the design of combining a single tank with a single pump and valve control, it is possible to achieve the ballasting and de-ballasting processes of a single ballast pump supporting a ballast tank simultaneously, ensuring the flexibility and efficiency of the longitudinal attitude adjustment of the ship.

[0101] In a preferred embodiment, referring to Figure 5 , step S2 includes,

[0102] Step S21, the first ballast branch and the second ballast branch of the first ballast pipeline are sequentially conducted to ballast the bow tank 1;

[0103] In step S22, the fourth and third load-discharging branches of the second load-discharging pipeline are sequentially conducted to discharge the load of the stern cabin 3, and the ice layer is crushed according to the self-gravity of the icebreaker to complete the icebreaking operation.

[0104] Specifically, in step S21, the water tank sucks water from the sea bottom valve to ballast the bow of the ship, and the weight of the bow increases;

[0105] In step S22, the water tank discharges water to the sea bottom valve to discharge the load of the stern of the ship, and the weight of the stern is reduced. According to the relationship between the center of gravity and gravity of an object, the center of gravity of the ship moves forward, and a large amount of gravity is concentrated on the bow part.

[0106] When the bow sails above the ice layer, this concentrated gravity is converted into a powerful pressure applied to the ice layer to achieve the purpose of crushing the ice layer.

[0107] By skillfully controlling the opening and closing of the valves, the water flow direction and water volume are precisely adjusted, thereby realizing the precise adjustment of the weights of different parts of the ship, providing technical support for icebreaking using gravity.

[0108] When facing ice layers of different thicknesses and hardnesses, the water volume of ballast and load discharge can be flexibly adjusted, and then the gravity acting on the ice layer can be precisely controlled.

[0109] For example, in the area of thin ice layer, the icebreaking can be completed by appropriately reducing the ballast water volume; in the area of thick ice layer, the ballast water volume is increased to enhance the icebreaking effect, enhancing the adaptability of the icebreaker to complex ice conditions.

[0110] The method of icebreaking using its own gravity through reasonable ballast and load discharge has less impact on the hull structure itself compared with other radical icebreaking means. It reduces damages such as hull wear and deformation that may be caused by directly and strongly ramming the ice layer, extends the service life of the icebreaker, and reduces the maintenance cost.

[0111] In a preferred embodiment, step S3 includes,

[0112] The second load-discharging branch and the first load-discharging branch are sequentially conducted to discharge the load of the bow cabin 1, and the fourth load-discharging branch and the third load-discharging branch are sequentially conducted to discharge the load of the stern cabin 3, and the icebreaker sails normally.

[0113] Specifically, the third valve 10, the water pump, and the fourth valve 11 are sequentially conducted, and the water in the water tank flows through the load-discharging pipeline to the sea bottom valve, and the weight of the bow part decreases accordingly.

[0114] The buoyancy of the ship in water is equal to the weight of the displaced liquid. The change in the weight of the bow will break the previous force balance state of the ship. As the weight of the bow decreases, the position of the center of gravity of the ship changes and gradually returns to a more balanced state during normal navigation, thereby changing the attitude of the ship in water to meet the requirements of normal navigation.

[0115] The valve and the water pump work together to construct a drainage path from the water tank to the sea chest. The water pump provides the drainage power to pump out the water in the water tank, while the third valve 10 and the fourth valve 11 control the water flow direction to ensure that the water flows out of the water tank to the sea chest along the predetermined path.

[0116] By precisely controlling this drainage process, the precise adjustment of the bow weight is achieved, and then the adjustment of the ship's navigation attitude is realized, ensuring that the ship can smoothly enter the normal navigation state.

[0117] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An icebreaker longitudinal attitude adjustment system, characterized in that: include, a first ballast pipeline controllably connected between the bow tank and the first seabed door; a first load-carrying pipeline controllably connected between the bow tank and the first seabed door; A second ballast pipeline is controllably connected between the stern tank and the second seabed door; a second row of loading pipelines, controllably connected between the stern compartment and the second seabed door; In a first state, the first ballast pipeline can controllably discharge water from the bow tank to the first seabed door, and the second ballast pipeline can controllably absorb water from the second seabed door to the stern tank; in a second state, the first ballast pipeline can controllably absorb water from the first seabed door to the bow tank, and the second ballast pipeline can controllably discharge water from the stern tank to the second seabed door.

2. The icebreaker longitudinal attitude adjustment system according to claim 1, characterized in that: The first ballast pipeline comprises: A first ballast branch, controllably connected between the first end of the first water pump and the first seabed door; a second ballast branch, controllably connected between the second end of the first water pump and the bow tank; The first pressure discharge branch is controllably connected between the bow cabin and the first seabed door.

3. The icebreaker longitudinal attitude adjustment system according to claim 2 is characterized in that: The first discharge-load pipeline includes the first pressure-discharge-load branch, and further includes: A first load branch, controllably connected between the second end of the first water pump and the first seabed gate; The second load branch is controllably connected between the first end of the first water pump and the bow tank.

4. The icebreaker longitudinal attitude adjustment system according to claim 2, characterized in that: The second ballast pipeline comprises: a third ballast branch, controllably connected between the first end of the second water pump and the second seabed door; a fourth ballast branch, controllably connected between the second end of the second water pump and the stern tank; The second pressure discharge branch is controllably connected between the stern compartment and the second seabed door.

5. The icebreaker longitudinal attitude adjustment system according to claim 4, characterized in that: The second load-discharging pipeline includes the second pressure-discharging load-discharging branch, and further includes: a third load branch, controllably connected between the second end of the second water pump and the second sea bottom door; The fourth load branch is controllably connected between the first end of the second water pump and the stern compartment.

6. The icebreaker longitudinal attitude adjustment system according to claim 1, characterized in that: The invention also includes a third state, wherein the first row of on-board pipes can controllably discharge water from the bow tank to the first seabed door, and the second row of on-board pipes can controllably discharge water from the stern tank to the second seabed door.

7. A control method for an icebreaker longitudinal attitude adjustment system, characterized in that: A system for controlling the longitudinal attitude adjustment of an icebreaker according to any one of claims 1 to 6, comprising: Step S1, when encountering an ice layer, the first ballast pipeline can controllably discharge water from the bow tank to the first seabed door, and the second ballast pipeline can controllably absorb water from the second seabed door to the stern tank; Step S2, the first ballast pipeline can controllably absorb water from the first seabed door to the bow tank, and the second ballast pipeline can controllably discharge water from the stern tank to the second seabed door; Step S3: the first row of on-board pipes can controllably drain water from the bow tank to the first seabed door, and the second row of on-board pipes can controllably drain water from the stern tank to the second seabed door, and the icebreaker sails normally.

8. The control method of the icebreaker longitudinal attitude adjustment system according to claim 7 is characterized in that: Step S1 comprises, Step S11, when the icebreaker encounters an ice layer, the third ballast branch and the fourth ballast branch of the second ballast pipeline are opened in sequence to ballast the stern tank; Step S12, sequentially opening the second load-discharging branch and the first load-discharging branch of the first load-discharging pipeline to discharge the load from the bow cabin, and the bow cabin is driven onto the ice surface.

9. The control method of the icebreaker longitudinal attitude adjustment system according to claim 8, characterized in that: Step S2 comprises, Step S21, sequentially connecting the first ballast branch and the second ballast branch of the first ballast pipeline to ballast the bow tank; Step S22, sequentially opening the fourth load branch and the third load branch of the second load pipeline to load the stern cabin, crushing the ice layer according to the icebreaker's own gravity, and completing the icebreaking operation.

10. The control method of the icebreaker longitudinal attitude adjustment system according to claim 9, characterized in that: Step S3 comprises, The second row of loading branches and the first row of loading branches are opened in sequence to unload the bow cabin, the fourth row of loading branches and the third row of loading branches are opened in sequence to unload the stern cabin, and the icebreaker sails normally.

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