CN220465715U - Air lubrication drag reduction system - Google Patents
Air lubrication drag reduction system Download PDFInfo
- Publication number
- CN220465715U CN220465715U CN202321858438.4U CN202321858438U CN220465715U CN 220465715 U CN220465715 U CN 220465715U CN 202321858438 U CN202321858438 U CN 202321858438U CN 220465715 U CN220465715 U CN 220465715U
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- steel pipe
- air
- arc steel
- main body
- semicircular arc
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- 230000009467 reduction Effects 0.000 title claims abstract description 22
- 238000005461 lubrication Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 6
- 238000012857 repacking Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 239000013535 sea water Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The utility model relates to the field of ships, in particular to an air lubrication drag reduction system. The ship comprises a main body, wherein the main body is a ship, and a monitoring control system is arranged on the main body; the semicircular arc steel pipe is externally arranged on the main body, and air source devices are arranged at two ends of the semicircular arc steel pipe; the gas generating device is horizontally arranged below the semicircular arc steel pipe, and a check valve is arranged at the joint of the gas generating device and the semicircular arc steel pipe; through adopting convex semicircle steel pipe type to carry air in the hull planking outside, the air is full of the boats and ships bottom after the gas generator discharges, forms one deck thin air bed in the boats and ships bottom, because the air friction resistance is less than water far away to this reduces boats and ships and voyages resistance under water, and through trompil in semicircle steel pipe bottom, thereby need not regional planking trompil below the boats and ships waterline, reduces the construction degree of difficulty that the boats and ships repacking, reduces the risk that the repacking caused the boats and ships planking.
Description
Technical Field
The utility model relates to the field of ships, in particular to an air lubrication drag reduction system.
Background
Along with the increase of the international convention on the control force of the carbon emission of ships and the implementation of the national 'double carbon' strategy, the energy conservation and carbon reduction of the shipping industry are also a trend. In order to promote energy conservation and carbon reduction of the shipping industry, the international maritime organization IMO of the global shipping industry management agency, at MEPC77 meeting, has passed the resolution of accounting the bubble lubrication drag reduction system into the ship design energy efficiency index EEDI/EEXI. The ship bubble lubrication drag reduction system is an important technical approach for reducing the underwater resistance of the ship to realize energy conservation and carbon reduction of the ship and improve the voyage. Air lubrication drag reduction is an effective way to improve ship drag by the principle that air is pumped out of small holes in the hull of the ship bottom rapidly, where the honeycomb bubbles contact the surface of the ship bottom and form a layer of bubbles outside the ship bottom, reducing the wet surface area of the ship. Because the resistance of the air is far smaller than that of the water, the larger the area of the air contacted with the bottom of the ship is, the smaller the running resistance of the ship is, so that the resistance of the ship during navigation can be reduced, and the propulsion efficiency is further improved. When the ship moves forward, the bubbles attached to the hull slide backward and are finally removed from the surface of the bottom of the hull.
However, in the gas layer drag reduction system, the bubble generating unit is additionally arranged on the bottom opening, so that the difficulty is high for refitting the ship, and the bottom opening is easy to influence the safety of the ship if the engineering quality is wrong, so that the shipper is very careful for refitting the opening of the outer plate below the waterline of the ship.
Disclosure of Invention
The utility model provides an air lubrication drag reduction system, which aims to solve the problems in the background technology.
In order to solve the technical problems, the utility model adopts a technical scheme that: an air lubrication drag reduction system comprises a main body, wherein the main body is a ship, and a monitoring control system is arranged on the main body; the semicircular arc steel pipe is externally arranged on the main body, and air source devices are arranged at two ends of the semicircular arc steel pipe; the gas generating device is horizontally arranged below the semicircular arc steel pipe, and a check valve is arranged at the joint of the gas generating device and the semicircular arc steel pipe; and the drainage pump is arranged on the semicircular arc steel pipe.
The semicircular steel pipes and the main body can be connected in a welding mode, and can also be connected in a non-welding mode such as bolts, pipe supports and the like. The monitoring control system is used for monitoring each performance parameter of the ship and the air lubrication system, controlling key components and guaranteeing effective operation of the whole system.
Preferably, the air source device is used for conveying air to the semicircular arc steel pipe, a plurality of holes are formed in the semicircular arc steel pipe, check valves are arranged at the positions of the holes, the semicircular arc steel pipe is connected with a plurality of gas generating devices, and the semicircular arc steel pipe is further provided with a drainage pump.
Preferably, the air source device is an air collecting device facing the advancing direction of the ship, and directly passes through the semicircular steel pipe by means of air flow generated when the ship advances in a sailing way, and is further transmitted to the gas generating device.
Preferably, the air source device can be internally provided with a blower so as to further improve air inflow and air pressure, and the air source device can also be an air compressor, and is provided with holes from an outer plate in the area above the waterline of the ship, and a semi-circular arc steel pipe is led into the ship body to be connected with the air compressor.
Preferably, all the openings of the semicircular arc steel pipes are provided with check valves, so that seawater is prevented from flowing backward into the semicircular arc steel pipes, meanwhile, the lowest position of the semicircular arc steel pipes is provided with drain holes, the drain holes are provided with drain pumps, and the semicircular arc steel pipes can be discharged through the drain pumps even if a small amount of seawater enters the semicircular arc steel pipes.
Preferably, the inside of the semicircular arc steel pipe can be used for air transportation, the outside of the semicircular arc steel pipe is semicircular, water flow brought by main navigation can flow in the gas generating device, when seawater flows through the outer side of the semicircular arc steel pipe, dynamic pressure reaches the maximum value and static pressure reaches the minimum value at the narrowest part of a venturi-like space formed by the outer side of the semicircular arc steel pipe and the gas generating device. The velocity of the seawater rises due to the varying cross-sectional area of the gush. The entire current is subjected to the pipeline shrinkage process at the same time, so that the pressure is reduced at the same time. And then the pressure difference is generated, a strong suction force is formed, and the air or the compressed air in the semi-circular arc steel tube is sucked into the gas generating device.
Preferably, the gas generating device is optionally provided with a water pump for accelerating the flow rate of seawater inside the gas generating device. The gas generating device is optionally provided with an ultrasonic sensor, and emits specific low-power pulse ultrasonic waves to prevent marine organisms from adhering.
The beneficial effects of the utility model are as follows: through adopting convex semicircle steel pipe type to carry air in the hull planking outside, the air is full of the boats and ships bottom after the gas generator discharges, forms one deck thin air bed in the boats and ships bottom, because the air friction resistance is less than water far away to this reduces boats and ships and voyages resistance under water, and through trompil in semicircle steel pipe bottom, thereby need not regional planking trompil below the boats and ships waterline, reduces the construction degree of difficulty that the boats and ships repacking, reduces the risk that the repacking caused the boats and ships planking.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is a schematic diagram of a semi-circular arc steel tube structure according to the present utility model;
FIG. 3 is a schematic diagram of the seawater flow direction structure of the gas generator of the present utility model;
FIG. 4 is a schematic view of the semi-circular arc steel pipes of the present utility model arranged along the width of a ship;
FIG. 5 is a schematic view of the semi-circular arc steel pipes of the present utility model arranged along the ship length;
fig. 6 is a schematic structural diagram of a semi-circular arc steel tube connection air compressor of the utility model.
In the figure: the device comprises an air source device 1, a semicircular arc steel pipe 2, an air generating device 3, a check valve 4, a drainage pump 5, a monitoring control system 6 and a main body 7.
Detailed Description
In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.
In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that a direct connection indicates that two bodies connected together do not form a connection relationship by an excessive structure, but are connected to form a whole by a connection structure. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 6, the present utility model provides a technical solution:
the air lubrication drag reduction system comprises a main body 7, wherein the main body 7 is a ship, and a monitoring control system 6 is arranged on the main body 1; the semicircular arc steel pipe 2 is externally arranged on the main body 7, and the air source device 1 is arranged at two ends of the semicircular arc steel pipe 2; the gas generating device 3 is horizontally arranged below the semicircular arc steel pipe 2, and a check valve 4 is arranged at the joint of the gas generating device 3 and the semicircular arc steel pipe 2; and a drain pump 5, wherein the drain pump 5 is installed on the semicircular arc steel pipe 2.
The semicircular steel pipe 2 and the main body 7 can be connected in a welding mode, or can be connected in a non-welding mode such as a bolt, a pipe bracket and the like. The monitoring control system 6 is used for monitoring various performance parameters of the ship and the air lubrication system, controlling key components and guaranteeing effective operation of the whole system.
The air source device 1 is used for conveying air to the semicircular arc steel pipe 2, a plurality of holes are formed in the semicircular arc steel pipe 2, check valves 4 are arranged at the positions of the holes, the semicircular arc steel pipe 2 is connected with a plurality of gas generating devices 3, and the semicircular arc steel pipe 2 is further provided with a drainage pump 5.
The air source device 1 is an air collecting device facing the advancing direction of the ship, and directly passes through the semicircular steel pipe 2 by means of air flow generated when the ship advances during sailing, and is further transmitted to the gas generating device 3.
As shown in fig. 1 or 6 below, the air source device 1 may be provided with a blower inside, so as to further increase the air inflow and air pressure, the air source device 1 may also be an air compressor, and the semicircular steel pipe 2 is led into the hull from the outer plate opening in the area above the waterline of the ship and connected with the air compressor.
All the openings of the semicircular arc steel pipes 2 are provided with check valves 4, so that seawater is prevented from flowing backward into the semicircular arc steel pipes 2, meanwhile, the lowest position of each semicircular arc steel pipe 2 is provided with a drain hole, the position of each drain hole is provided with a drain pump 5, and even if a small amount of seawater enters the semicircular arc steel pipes 2, the seawater can be discharged through the drain pumps 5.
As shown in fig. 3 below, the inside of the semi-arc steel pipe 2 can be used for air transportation, the outside is semi-arc, the water flow caused by sailing of the main body 7 can flow inside the gas generating device 3, when the seawater flows through the outside of the semi-arc steel pipe 2, the dynamic pressure reaches the maximum value and the static pressure reaches the minimum value at the narrowest part of the venturi-like space formed between the outside of the semi-arc steel pipe 2 and the gas generating device 3. The velocity of the seawater rises due to the varying cross-sectional area of the gush. The entire current is subjected to the pipeline shrinkage process at the same time, so that the pressure is reduced at the same time. And then a pressure difference is generated to form a strong suction force, and air or compressed air in the semi-arc steel pipe 2 is sucked into the gas generating device 3.
The gas generator 3 optionally has a water pump for accelerating the flow rate of seawater inside the gas generator 3. The gas generating device 3 is optionally provided with an ultrasonic sensor, and emits specific low-power pulse ultrasonic waves to prevent marine organisms from adhering.
When the utility model is used, air flow generated in the sailing and advancing process of the main body 1 is introduced into the semicircular steel pipe 2 through the air source device 1 and then is transmitted into the air generating device 3, and the air source device 1 further improves air inflow and air pressure through the air blower or the air compressor; when the main body 7 flows through the outer side of the semicircular arc steel pipe 2 in the sailing process, the dynamic pressure reaches the maximum value and the static pressure reaches the minimum value at the narrowest part of the venturi-like space formed by the outer side of the semicircular arc steel pipe 2 and the gas generating device 3, the speed of the seawater rises due to the change of the cross-sectional area of the gushing flow, the whole gushing flow can go through the pipeline shrinking process at the same time, so that the pressure is reduced at the same time, further, a pressure difference is generated, strong suction force is formed, air or compressed air in the semicircular arc steel pipe 2 is sucked into the gas generating device 3, the flow speed of the seawater in the gas generating device 3 is accelerated, the air is discharged through the gas generating device 3 and then is fully distributed at the bottom of the main body 7, and a thin air layer is formed at the bottom of the main body 7, and the air friction resistance is far smaller than that of the water, so that the resistance of the seawater generated in the sailing process of the main body 7 is reduced.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.
The present utility model is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.
Claims (7)
1. An air lubrication drag reduction system, characterized in that: the air lubrication drag reduction system comprises
The main body (7), the main body (7) is a ship, and the main body (7) is provided with a monitoring control system (6);
the semicircular arc steel pipe (2), the semicircular arc steel pipe (2) is externally arranged on the main body (7), and the two ends of the semicircular arc steel pipe (2) are provided with air source devices (1);
the gas generating device (3), the gas generating device (3) is horizontally arranged below the semicircular arc steel pipe (2), and a check valve (4) is arranged at the joint of the gas generating device (3) and the semicircular arc steel pipe (2);
and the drainage pump (5), and the drainage pump (5) is arranged on the semicircular arc steel pipe (2).
2. The air lubrication drag reduction system of claim 1, wherein: the semi-circular arc steel tube (2) is provided with a plurality of holes, check valves (4) are arranged at the positions of the holes, a plurality of gas generating devices (3) are arranged below the semi-circular arc steel tube (2), and the gas generating devices (3) are arranged below the semi-circular arc steel tube (2).
3. The air lubrication drag reduction system of claim 1, wherein: the lowest position in the middle of semicircle steel pipe (2) has seted up the wash port, and the wash port position is provided with drain pump (5).
4. The air lubrication drag reduction system of claim 1, wherein: the semicircular steel pipes (2) and the main body (7) can be connected in a welding mode or in a non-welding mode.
5. The air lubrication drag reduction system of claim 2, wherein: the outside of semicircle steel pipe (2) sets up to semicircle shape, and the junction of semicircle steel pipe (2) and gas generator (3) sets up to venturi's structure, and gas generator (3) optional have water pump and ultrasonic wave radiator.
6. The air lubrication drag reduction system of claim 1, wherein: the semi-circular arc steel pipes (2) may be arranged along the width direction of the main body (7) or along the length direction of the main body (7).
7. The air lubrication drag reduction system of claim 1, wherein: the air source device (1) is internally provided with a blower, or the air source device (1) is connected with an air compressor arranged in the main body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321858438.4U CN220465715U (en) | 2023-07-14 | 2023-07-14 | Air lubrication drag reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321858438.4U CN220465715U (en) | 2023-07-14 | 2023-07-14 | Air lubrication drag reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220465715U true CN220465715U (en) | 2024-02-09 |
Family
ID=89804108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321858438.4U Active CN220465715U (en) | 2023-07-14 | 2023-07-14 | Air lubrication drag reduction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220465715U (en) |
-
2023
- 2023-07-14 CN CN202321858438.4U patent/CN220465715U/en active Active
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