CN111361684A - Ship drag reduction and auxiliary ice breaking bubble system - Google Patents
Ship drag reduction and auxiliary ice breaking bubble system Download PDFInfo
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- CN111361684A CN111361684A CN202010203561.7A CN202010203561A CN111361684A CN 111361684 A CN111361684 A CN 111361684A CN 202010203561 A CN202010203561 A CN 202010203561A CN 111361684 A CN111361684 A CN 111361684A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
- B63B35/083—Ice-breakers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
- B63B2001/382—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes by making use of supercavitation, e.g. for underwater vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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Abstract
The invention provides a ship drag reduction and auxiliary ice-breaking bubble system, which relates to the technical field of polar ship design and manufacture and comprises the following components: the power supply control box is respectively connected with a first air compressor and a second air compressor and is used for supplying power to the first air compressor and the second air compressor and adjusting the gas flow of the first air compressor and the second air compressor in real time; the air storage device is arranged at the front edge of the bottom of the icebreaker and is connected with the first air compressor through a first ventilation pipeline, and a one-way air jet plate is arranged at the bottom of the air storage device; the input end of the pressure stabilizing shunt gas tank is connected with the second air compressor; the air injection assemblies are arranged at the bilge part of the ice breaker, and each air injection assembly is connected with the output end of the pressure-stabilizing shunt air tank through a second vent pipeline; the design has the advantages that the space occupied by the ship is small, the installation is convenient, and the device has the characteristics of good adaptability and high utilization rate; the ship drag reduction and the auxiliary ice breaking can be realized simultaneously.
Description
Technical Field
The invention relates to the technical field of design and manufacture of polar ships, relates to an icebreaker sailing in a full sea state, and particularly relates to a ship drag reduction and auxiliary icebreaking bubble system.
Background
In recent 40 years, the coverage area and thickness of the arctic sea ice are continuously reduced, the arctic navigation and resource development are increasingly realized, and the requirements of the international ship market on professional icebreakers, various polar transport ships and engineering ships are more and more urgent due to huge economic benefits and important strategic meanings. Therefore, researchers are more concerned about improving the ice breaking capacity and the motion performance of polar ships in an ice area, reducing the ship body sailing resistance and reducing the fuel consumption, and besides a conventional structure strengthening and optimizing an ice breaking molded line, adding an auxiliary ice breaking system is also one of popular means for improving the ice breaking capacity.
The bubble drag reduction technology is generally regarded as the most promising research direction in the field of ship drag reduction at present, namely, a microbubble air layer with lower fluid density is formed on the surface of a ship body by introducing air into the ship bottom, and the structure of fluid in a boundary layer is changed, so that the effect of reducing resistance is realized, and the purpose of saving energy is achieved. Although the technology is one of the research hotspots in the fields of ship engineering, hydrodynamics, military science and technology and the like, most of domestic and foreign researches focus on the resistance reduction performance of open sea areas, and the application of the bubble resistance reduction technology in the field of polar ships is not available.
The existing bubble drag reduction technology has no precedent for being applied to ships in ice regions, but the existing bubble auxiliary ice breaking technology ignores the problem that the existing bubble auxiliary ice breaking technology is difficult to play a role in an open water region or a sea region with less floating ice and even can increase fuel consumption, so the invention provides a bubble auxiliary system with the full sea condition drag reduction and the auxiliary ice breaking and clearing performance, which has important significance for improving the comprehensive capacity of polar ships, and particularly has great innovative significance for the ice breaking ship type that China can reach the south and north two polar regions by long clear water navigation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a ship drag reduction and auxiliary ice breaking bubble system, which is applied to an ice breaker sailing in a full sea condition and specifically comprises the following steps:
the power supply control box is arranged inside the icebreaker, is respectively connected with a first air compressor and a second air compressor, and is used for supplying power to the first air compressor and the second air compressor and adjusting the gas flow of the first air compressor and the second air compressor in real time;
the air storage device is arranged at the front edge of the flat bottom of the ice breaker, is connected with the first air compressor through a first ventilation pipeline, and is provided with a one-way air jet plate at the bottom;
after the gas output by the first air compressor is filled in the gas storage device through the first ventilation pipeline, the gas is released in a micro-bubble mode through the one-way gas jet plate so as to form a micro-bubble gas layer at the bottom of the icebreaker, and therefore ship resistance reduction is achieved;
the input end of the pressure stabilizing shunt gas tank is connected with the second air compressor;
the plurality of air injection assemblies are arranged at the bilge part of the ice breaker, and each air injection assembly is connected with the output end of the pressure stabilizing shunt air tank through a second vent pipeline;
and gas output by the second air compressor is subjected to pressure stabilization by the pressure stabilization shunt gas tank, then is output to the connected gas injection assembly through each second gas communication pipeline, and is sprayed out by the gas injection assembly, so that gas-water mixed flow is formed on the side of the icebreaker, and then auxiliary icebreaking is realized.
Preferably, the first air compressor and the second air compressor are respectively connected with the power supply control box through cables.
Preferably, the gas storage device is in a semi-arc structure and is symmetrical about the middle longitudinal section of the ice breaker.
Preferably, the air storage device is located below the first air compressor, and the first ventilation pipeline is a vertical ventilation pipeline.
Preferably, a plurality of unidirectional air injection holes are formed in the unidirectional air injection plate.
Preferably, each of the second vent lines includes a vertical vent line connected to the surge tank and a horizontal vent line connecting the vertical vent line and the gas injection assembly.
Preferably, the air injection assembly comprises two nozzles, the two nozzles are connected through a connecting pipeline, and the middle part of the connecting pipeline is communicated with the horizontal ventilation pipeline.
Preferably, the nozzle is a one-way nozzle.
Preferably, the horizontal vent pipe is attached to the bottom of the ice breaker, and the whole horizontal vent pipe is symmetrical with respect to the longitudinal mid-section of the ice breaker.
Preferably, a control air valve is arranged on the pressure stabilizing shunt air tank.
The technical scheme has the following advantages or beneficial effects:
1) the bubble technology is adopted for ship drag reduction and auxiliary ice breaking, is a novel green technology, and has a series of advantages of reproducibility, no pollution, repeated use, little environmental disturbance and the like;
2) the design of the system occupies a small space in the ship, is convenient to install, can be realized without greatly modifying the existing ship body, and has the characteristics of good equipment adaptability and high utilization rate;
3) the system has rich functions and has the functions that the control system can effectively regulate and control two parts, when the system sails in a sea area with less broken ice or a channel opened by an icebreaker, the bubble drag reduction system at the bottom of the ship can be only started to save energy and improve efficiency, and when the ice condition is more complex, the two parts of functions are simultaneously operated to achieve the optimal ice breaking drag reduction effect.
Drawings
FIG. 1 is a schematic diagram of a bubble system for drag reduction and assisted ice breaking in a ship according to a preferred embodiment of the present invention;
FIG. 2 is a top view of a marine drag reduction and assisted ice breaking bubble system in accordance with a preferred embodiment of the present invention;
FIG. 3 is a side view of the installation of a marine drag reduction and assisted ice breaking bubble system in a preferred embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present invention is not limited to the embodiment, and other embodiments may be included in the scope of the present invention as long as the gist of the present invention is satisfied.
In a preferred embodiment of the present invention, based on the above problems in the prior art, there is provided a ship drag reduction and ice-breaking assisting bubble system, which is applied to an ice breaker sailing in the sea, as shown in fig. 1 to 3, and specifically includes:
the power supply control box 1 is arranged inside the icebreaker 100, and the power supply control box 1 is respectively connected with a first air compressor 2 and a second air compressor 3 and is used for supplying power to the first air compressor 2 and the second air compressor 3 and adjusting the gas flow of the first air compressor 2 and the second air compressor 3 in real time;
the air storage device 4 is arranged at the front edge of the flat bottom of the ice breaker 100, the air storage device 4 is connected with the first air compressor 2 through a first ventilation pipeline 5, and the bottom of the air storage device 4 is provided with a one-way air jet plate 6;
after the gas output by the first air compressor 2 is filled in the gas storage device through the first vent pipe 5, the gas is released in a micro-bubble mode through the one-way gas jet plate 6, so that a micro-bubble gas layer is formed at the bottom of the ice breaker 100, and the resistance reduction of the ship is further realized;
the input end of the pressure stabilizing shunt gas tank 7 is connected with the second air compressor 3;
the plurality of paint spraying components are arranged at the bilge part of the ice breaker 100, and each paint spraying component is connected with the output end of the pressure-stabilizing shunt gas tank 7 through a second vent pipeline 9;
the gas output by the second air compressor 3 is subjected to pressure stabilization by the pressure stabilization shunt gas tank 7, then is output to the connected paint spraying components through the second vent pipelines 9, and is sprayed out by the paint spraying components, so that a gas-water mixed flow is formed on the side of the icebreaker 100, and then auxiliary icebreaking is realized.
Specifically, in this embodiment, based on the geographical location of China, in the process of navigating from China directly to south or north, the icebreaker first needs to pass through the sailing sea state of an open water area without ice or a sea area with less floating ice, and needs to break ice after reaching a polar region, so that the function of navigating in the whole sea state is compatible. The invention aims to provide a ship drag reduction and auxiliary ice-breaking bubble system which has the full sea condition drag reduction and auxiliary ice-breaking and ice-cleaning performances, and the ship drag reduction and auxiliary ice-breaking bubble system is designed to introduce a microbubble gas layer at the bottom of a ship to achieve the purpose of open water drag reduction; meanwhile, independent air compressors are respectively configured for nozzles at the bottom of the ship and at the bilge part, the air compressors are controlled by a common power supply control box, the flow of different parts is adjusted according to the requirement of a navigation environment or one of the parts is independently operated, so that the two parts supplement each other, and the optimal resistance reduction and energy saving effects can be achieved in two different application scenes, namely a clear water navigation working condition and an ice breaking working condition in an ice region. Furthermore, a series of experiments show that the action mechanism of the bubble drag reduction technology in the ice area environment and the open water area are greatly changed, bubbles generated at the bottom of the ship not only cover the surface of the bottom of the ship to generate certain drag reduction effect, but also form a strand of air-water mixed flow to generate certain influence on broken ice and floating ice in the sea of the ice area when the bubbles overflow from two sides of the bottom of the ship and rise along the side of the ship, which is favorable for reducing the influence of ice breaking and clearing resistance. Therefore, the invention can be suitable for ships in ice regions, can reduce the frictional resistance of the ship bottom through the bubble layer, and can effectively reduce the ice breaking and removing resistance in the ice region navigation.
More specifically, the ship drag reduction and auxiliary ice-breaking bubble system of the present invention comprises a power control box 1, a first air compressor 2, a second air compressor 3 and a pressure-stabilizing shunt air tank 7 which are arranged inside the hull of the ice-breaking ship 100, wherein the first air compressor 2 and the second air compressor 3 are preferably respectively connected to the power control box 1 through cables 8, and the pressure-stabilizing shunt air tank 7 is connected to the second air compressor 3.
The ship drag reduction and auxiliary ice breaking bubble system further comprises a gas storage device 4 arranged at the front edge of the flat ship bottom of the ice breaker 100 and a paint spraying assembly arranged on the side of the ice breaker 100 close to the ship bottom, namely near the bilge, wherein the gas storage device 4 is connected with a first air compressor 2 through a first vent pipeline 5, a one-way air spraying plate 6 is arranged at the bottom of the gas storage device 4, a plurality of air injection holes are formed in the one-way air spraying plate 6, and the air injection holes are controlled to be opened and closed by pressure; the first ventilation pipeline 5 is preferably a vertical ventilation pipeline, and the gas storage device 4 is preferably a semi-arc structure and is symmetrical about the longitudinal mid-section of the ice-breaker 100. At the bottom of the ship, gas enters the gas storage device 4 after being compressed by the first air compressor 2, and after the gas storage device 4 is uniformly filled, the gas enters a boundary layer contacting with a water body at the bottom of the ship through the unidirectional gas spray plate 6 in a micro-bubble form, and a uniform and stable micro-bubble gas layer is formed at the bottom of the ship and gradually distributed on the whole flat bottom of the ship along with the movement of the ship to achieve the effect of reducing the navigation resistance.
The painting assembly is connected with the pressure-stabilizing shunt gas tank 7 through a second vent pipeline 9, the second vent pipeline 9 preferably comprises a vertical vent pipeline connected with one end of the pressure-stabilizing shunt gas tank 7 and a horizontal vent pipeline connected with one end of the painting assembly, and the whole horizontal vent pipelines are symmetrical about the middle longitudinal section of the ice breaker 100. The spray assembly preferably has two spray nozzles 81, the spray nozzles 81 preferably being circular spray orifices. In the hull side part, gas enters the pressure stabilizing shunt gas tank 7 after being compressed by the second air compressor 3, and after the gas fully fills the whole pressure stabilizing shunt gas tank 7 and is regulated to the required stable gas pressure by the control gas valve 71, the gas is sprayed into water through the second gas passage 9 and the nozzle 81 to form strong gas-water mixed flow rising along the hull side and a bubble cavity gathered under an ice layer, so that the effect of assisting in breaking ice and removing ice is achieved. The nozzle 81 is preferably a one-way nozzle, and the influence of backflow of gas and seawater is avoided.
More specifically, as shown in fig. 3, the ice breaking effect of the bubbles is that when the broadside bubbles 11 rise along the hull to below the ice layer 10, a large number of bubble cavities are formed on the lower surface of the ice layer 10 in a gathering manner, and the bubble cavities discharge seawater and take away the fluid bearing force of the seawater on the ice layer, so that the ice layer loses elastic support (water support) and is more easily broken; the ice cleaning function of the bubbles is that the gas leaves the gas orifice and the one-way nozzle moves upwards along the ship body, meanwhile, the side bubbles 11 expand to form a strong upwards gas-water mixed flow along the side, and the gas-water mixed flow forms a lubricating layer between the ship body and the broken sea ice, so that the friction force of the broken ice and the snow on the ship body is effectively reduced, and the ice cleaning resistance is greatly reduced.
The realization of bubble drag reduction function lies in that when gaseous entering gas storage device 4 through first vent line 5, evenly fill up gas storage device 4 earlier and later gaseous through one-way gas jet plate 6 with the boundary layer of microbubble the form release entering hull bottom and water contact, along with the motion of hull forms and is covered with the even stable microbubble gas layer 12 of whole hull bottom, this hull bottom microbubble gas layer 12 can reduce the frictional resistance between the medium such as hull and sea water by a wide margin, total resistance drag reduction rate can reach more than 10% in a large amount of experiments.
More preferably, the power control box 1 of the invention adjusts the air flow of the first air compressor 2 and the second air compressor 3 to adjust the different flow of the bottom bubble drag reduction part and the side bubble auxiliary ice-breaking and ice-cleaning part, the two parts of the system can work simultaneously or respectively and independently, the bottom bubble drag reduction part is opened to effectively reduce the frictional resistance between the bottom and the water body when the ship is in open sea, and the side bubble auxiliary ice-breaking and ice-cleaning part is reduced in flow or is completely closed to effectively reduce the fuel consumption and achieve the purpose of energy saving; when severe ice conditions are met, ice resistance can be greatly reduced by the aid of the full-open side bubbles to assist ice breaking and ice cleaning, and meanwhile, the micro-bubble gas layer at the bottom of the ship can form a lubricating layer to avoid additional ship ice friction resistance caused by sliding of part of crushed ice to the bottom of the ship, so that the system can achieve good ice breaking or resistance reduction effects under various sea conditions and weather conditions.
In the preferred embodiment of the present invention, the first air compressor 1 and the second air compressor 2 are respectively connected to the power control box 1 through cables 8.
In a preferred embodiment of the present invention, the gas storage device 4 has a semi-circular arc structure and is symmetrical with respect to the longitudinal mid-section of the ice-breaker 100.
In a preferred embodiment of the present invention, the air storage device 1 is located below the first air compressor 2, and the first ventilation pipeline 5 is a vertical ventilation pipeline.
In the preferred embodiment of the present invention, the unidirectional gas injection plate 6 is provided with a plurality of unidirectional gas injection holes.
In the preferred embodiment of the invention, each second vent line 9 comprises a vertical vent line connected to the surge tank 7 and a horizontal vent line connecting the vertical vent line to the painting module.
In the preferred embodiment of the present invention, the painting module includes two nozzles 81, the two nozzles 81 are connected by a connecting pipe 82, and the middle portion of the connecting pipe 82 is communicated with the horizontal ventilation pipe.
In the preferred embodiment of the present invention, the nozzle 81 is a one-way nozzle.
In a preferred embodiment of the present invention, the horizontal ventilation pipes are attached to the bottom of the icebreaker 100 and the whole horizontal ventilation pipes are symmetrical with respect to the longitudinal mid-section of the icebreaker 100.
In the preferred embodiment of the present invention, the pressure-stabilizing shunt gas tank 7 is provided with a control gas valve 71.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a boats and ships drag reduction and supplementary bubble system that opens ice, is applied to the icebreaker of full sea condition navigation, its characterized in that specifically includes:
the power supply control box is arranged inside the icebreaker, is respectively connected with a first air compressor and a second air compressor, and is used for supplying power to the first air compressor and the second air compressor and adjusting the gas flow of the first air compressor and the second air compressor in real time;
the air storage device is arranged at the front edge of the flat bottom of the ice breaker, is connected with the first air compressor through a first ventilation pipeline, and is provided with a one-way air jet plate at the bottom;
after the gas output by the first air compressor is filled in the gas storage device through the first ventilation pipeline, the gas is released in a micro-bubble mode through the one-way gas jet plate so as to form a micro-bubble gas layer at the bottom of the icebreaker, and therefore ship resistance reduction is achieved;
the input end of the pressure stabilizing shunt gas tank is connected with the second air compressor;
the plurality of air injection assemblies are arranged at the bilge part of the ice breaker, and each air injection assembly is connected with the output end of the pressure stabilizing shunt air tank through a second vent pipeline;
and gas output by the second air compressor is subjected to pressure stabilization by the pressure stabilization shunt gas tank, then is output to the connected gas injection assembly through each second gas communication pipeline, and is sprayed out by the gas injection assembly, so that gas-water mixed flow is formed on the side of the icebreaker, and then auxiliary icebreaking is realized.
2. The marine drag reduction and ice breaking aid bubble system of claim 1, wherein the first air compressor and the second air compressor are connected to the power control box by cables, respectively.
3. The marine drag reduction and ice breaking aid bubble system of claim 1, wherein the gas storage device is of a semi-circular arc structure and is symmetrical about the mid-longitudinal section of the ice breaker.
4. The marine drag reduction and ice breaking aid bubble system of claim 3, wherein the gas storage device is located below the first air compressor and the first vent line is a vertical vent line.
5. The marine drag reduction and auxiliary ice breaking bubble system of claim 1, wherein a plurality of unidirectional jet holes are provided on the unidirectional jet plate.
6. The marine drag reduction and ice-breaking aid bubble system of claim 1, wherein each of the second vent lines comprises a vertical vent line connected to the surge tank and a horizontal vent line connecting the vertical vent line and the air jet assembly.
7. The system for reducing drag and assisting in breaking ice of ships according to claim 6, wherein the air injection assembly comprises two nozzles, the two nozzles are connected through a connecting pipeline, and the middle part of the connecting pipeline is communicated with the horizontal ventilation pipeline.
8. The marine drag reduction and assisted ice breaking bubble system of claim 7, wherein the nozzle is a one-way nozzle.
9. The marine drag reduction and ice breaking aid bubble system of claim 6, wherein the horizontal vent pipe is attached to the bottom of the icebreaker and the entirety of each horizontal vent pipe is symmetrical with respect to the mid-longitudinal section of the icebreaker.
10. The system for reducing drag and assisting in ice breaking of ships as claimed in claim 1, wherein the pressure-stabilizing shunt gas tank is provided with a control gas valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010203561.7A CN111361684A (en) | 2020-03-20 | 2020-03-20 | Ship drag reduction and auxiliary ice breaking bubble system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010203561.7A CN111361684A (en) | 2020-03-20 | 2020-03-20 | Ship drag reduction and auxiliary ice breaking bubble system |
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| CN111361684A true CN111361684A (en) | 2020-07-03 |
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| CN202010203561.7A Pending CN111361684A (en) | 2020-03-20 | 2020-03-20 | Ship drag reduction and auxiliary ice breaking bubble system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676920A (en) * | 2020-07-14 | 2020-09-18 | 大连理工大学 | Device for intercepting dirt, guaranteeing flood discharge and generating safety of reservoir in severe cold area |
| CN112197172A (en) * | 2020-10-09 | 2021-01-08 | 哈尔滨工程大学 | Multi-bubble ice breaking device and method |
| CN115056930A (en) * | 2022-05-23 | 2022-09-16 | 中国船舶工业集团公司第七0八研究所 | Water-spraying auxiliary ice-breaking system for generating hull lubrication and side-pushing effect |
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| US3580204A (en) * | 1967-11-11 | 1971-05-25 | Waertsilae Oy Ab | Arrangement in ships |
| CN102224064A (en) * | 2008-11-21 | 2011-10-19 | 三菱重工业株式会社 | Hull frictional resistance reducing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111676920A (en) * | 2020-07-14 | 2020-09-18 | 大连理工大学 | Device for intercepting dirt, guaranteeing flood discharge and generating safety of reservoir in severe cold area |
| CN112197172A (en) * | 2020-10-09 | 2021-01-08 | 哈尔滨工程大学 | Multi-bubble ice breaking device and method |
| CN115056930A (en) * | 2022-05-23 | 2022-09-16 | 中国船舶工业集团公司第七0八研究所 | Water-spraying auxiliary ice-breaking system for generating hull lubrication and side-pushing effect |
| CN115056930B (en) * | 2022-05-23 | 2024-05-31 | 中国船舶工业集团公司第七0八研究所 | Water-spraying auxiliary ice breaking system for generating hull lubrication and side pushing effect |
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