KR20230081916A - Air-lifted seawater auxiliary propulsion apparatus for ecoships - Google Patents

Abstract

The present invention provides an air-lift seawater auxiliary propulsion device 10 that is used by disposing one or more on both sides of the vessel 12 in the vicinity of the waterline 14. The air-cushion seawater auxiliary propulsion device 10 according to the present invention is for discharging the seawater pumped by air-cushion and a vertical upward pumping pipe 16 that allows seawater to be pumped upward by air-cushion. It includes a vertical downward discharge pipe 18 shorter in length than the pipe 16. The upper pumping pipe 16 is a long tubular body, and a significant portion of its length is placed in the water below the waterline 14, and at the lower end placed in the water, there is a horizontal seawater inlet 20 directed toward the bow of the ship 12 Connected. In addition, the lower end of the lower discharge pipe 18 is located in the water below the waterline 14, and a horizontal discharge port 24 directed toward the stern is connected to the lower end. The upper end of the upper pumping pipe 16 and the upper end of the lower discharge pipe 18 are connected to the horizontal connection pipe 22 at the upper part of the waterline 14, and the seawater at the bottom of the upper pumping pipe 16 Close to the inlet 20, an annular jet ring 26 for ejecting compressed air upward is disposed inside the upper water pipe 16, and the jet ring 26 is installed on the ship 12 Compressed air It is connected to the compressed air tank 28 as a supply source through a connection line 30.

Description

Air-lift seawater auxiliary propulsion system for eco-friendly ships {AIR-LIFTED SEAWATER AUXILIARY PROPULSION APPARATUS FOR ECOSHIPS}

The present invention relates to an air-cushion seawater auxiliary propulsion device for an eco-friendly ship, and in particular, air-cushion seawater lifted by compressed air is discharged toward the stern of the ship to obtain auxiliary propulsion, and air bubbles discharged together with the air-cushion seawater It relates to an air-lift seawater auxiliary propulsion device for an eco-friendly ship in which fuel consumption is reduced by reducing frictional resistance between seawater.

For the purpose of coping with climate change and reducing marine air pollution, the International Maritime Organization (IMO) sets a target year to reduce the Energy Efficiency Design Index (EEDI) of newly built ships to the set target. . And, as part of this, recently, a policy has been established to strengthen the Energy Efficiency Existing Ship Index (EEXI) of existing ships and to ban ships with inefficiency grades from the target year.

The International Maritime Organization, which has set the energy efficiency index (EEXI) of existing ships as an appropriate target value, uses the same calculation formula as the energy efficiency design index (EEDI) applied to newly built ships to classify ships into five stages and meet energy efficiency standards. It is stipulated that sanctions be imposed on ships of lower grades that fail to comply. Therefore, a ship that does not comply with these regulations has no choice but to lower the speed of the ship through the power limit.

Currently, most of the newly ordered ships follow the Energy Efficiency Design Index (EEDI) standards, but most of the ships ordered before the enactment of the above regulations do not meet these standards. Since the energy efficiency design index (EEDI) is determined by the CO ₂ conversion factor and fuel consumption of the fuel used by the ship, in order to meet the standard, the fuel consumption must be reduced by changing the fuel used or remodeling the ship structure.

Recently, as one way to solve this problem, an air lubrication method has been proposed in which air bubbles are generated at the bottom of a ship to reduce friction with seawater, thereby reducing fuel consumption. However, it has been confirmed that this air lubrication means only reduces friction between the ship and seawater by generating air bubbles on the bottom of the ship, and has little effect on the propulsion of the ship.

1. Publication of Patent Publication No. 10-2012-0048235 (published on May 15, 2012) 2. Publication of Patent Publication No. 10-2016-0128183 (published on November 7, 2016) 3. Registered Patent Publication Registration No. 10-1980738 (Announced on May 22, 2019) 4. Registered Patent Publication Registration No. 10-2005185 (Announced on July 29, 2019)

In the present invention, it was invented in view of the above problems in the prior art, and the present invention obtains auxiliary propulsion by discharging air-lift seawater lifted with compressed air in the direction of the stern of the ship, and at the same time, bubbles discharged together with air-lift sea water It is to provide an air-lift seawater auxiliary propulsion device for an eco-friendly ship in which fuel consumption is reduced by reducing frictional resistance between the surface of the ship and seawater.

In order to achieve the above object, the present invention provides an air-lift seawater auxiliary propulsion device that is disposed on one or more sides of a ship to provide propulsion to the ship.

The air-lift seawater auxiliary propulsion device according to the present invention is a tubular body elongated in the longitudinal direction, the lower part of which is located in the water below the waterline of the ship, and has a seawater inlet at the bottom toward the bow of the ship and into which seawater flows upper amniotic duct; a compressed air tank for storing compressed air; An illusion of supporting seawater by being disposed in a position close to the seawater inlet to be submerged in the seawater introduced from the upper pumping pipe, connected to the compressed air tank, receiving compressed air, and ejecting upward in the form of bubbles in the inflowed seawater. a first jet ring of; A tubular body spaced apart from the upper water pipe and extending in the longitudinal direction, the lower part being located in the water below the waterline of the vessel, and facing the stern of the vessel at the lower end, but having a discharge port located relatively higher than the seawater inlet a lower discharge pipe; It includes a connection pipe communicating with each other at the upper ends of the upper amniotic fluid pipe and the lower discharge pipe. At this time, the seawater introduced from the seawater inlet is transported together with the bubbles to the flow path composed of the upper pumping pipe, the connection pipe, the lower discharge pipe, and the discharge port in order, and is discharged from the discharge port toward the stern of the ship.

Optionally, the air-lift seawater auxiliary propulsion device according to the present invention is disposed in the connection pipe and collects the air bubbles in the seawater passing through the connection pipe to store the compressed air collected therein. collection pass; It is disposed on the upper side of the first jet ring in the upper amniotic fluid pipe and is connected to the first compressed air collector, receives the collected compressed air from the first compressed air collector, and moves upward in the form of bubbles in seawater. It may further include a second jet ring for lifting seawater by ejecting it.

Optionally, the air-lift seawater auxiliary propulsion device according to the present invention includes an aberration turbine disposed in the lower discharge pipe and rotated by seawater falling in the lower discharge pipe; an air compressor operated by the rotational force of the aberration turbine and compressing external air; It is disposed on the upper side of the first jet ring in the upper pumping pipe and is connected to the air compressor, receives the compressed external air from the air compressor, and ejects it upward in the form of bubbles in the seawater to lift the seawater. It may further include a third jet ring to do.

Optionally, the air-lift seawater auxiliary propulsion device according to the present invention is arranged to extend from the outer periphery of the lower discharge pipe to the inner periphery of the lower discharge pipe around the circumference of the lower discharge pipe, A plurality of air bubbles having an exposed top opening and a bottom opening exposed inside the lower discharge pipe, and supplying air from the bottom opening to the seawater passing through the lower discharge pipe from the outside air introduced into the upper opening in the form of air bubbles. air supply customs; a second compressed air collection passage disposed on the discharge port and passing through the plurality of air supply tubes to collect air bubbles in the seawater passing through the discharge port and storing compressed air collected therein; It is disposed on the upper side of the first jet ring in the upper pumping pipe and is connected to the second compressed air collector, receives the stored compressed air from the second compressed air collector, and moves upward in the form of bubbles in seawater. It may further include a fourth jet ring that supports seawater by ejecting it.

Optionally, the air-lift seawater auxiliary propulsion device according to the present invention is loaded on the ship and uses at least one of a photovoltaic power generation device and a fuel cell as a power source to produce compressed air stored in the compressed air tank. A compressor may be further included.

Optionally, in the air-lift seawater auxiliary propulsion device according to the present invention, the position of the discharge port of the lower discharge pipe may be adjusted up and down according to a change in the height of the waterline according to the load capacity of the ship.

The air-cushion seawater auxiliary propulsion device according to the present invention discharges air-cushion seawater lifted by compressed air toward the stern of the ship to effectively obtain auxiliary propulsion, and at the same time, air bubbles discharged together with the air-cushion seawater move between the surface of the ship and the seawater. By reducing frictional resistance, fuel consumption can be effectively reduced. In addition, in the present invention, the compressed air is eco-friendly because it is produced using a photovoltaic device and/or a fuel cell.

1 is a basic configuration diagram of a first embodiment of an air-lift seawater auxiliary propulsion device installed on the side of a ship to obtain auxiliary propulsion from seawater lifted with compressed air.
2 is an explanatory view showing an example in which the air-lift seawater auxiliary propulsion device of the present invention is disposed on the side of a ship.
FIG. 3 is an explanatory view showing an enlarged part of the example shown in FIG. 2 .
Figure 4 is a configuration diagram showing a second embodiment of the air-lift seawater auxiliary propulsion device of the present invention.
5 is a configuration diagram showing a third embodiment of the air-lift seawater auxiliary propulsion device of the present invention.
6 is a configuration diagram showing a fourth embodiment of the air-lift seawater auxiliary propulsion device of the present invention.
7 is a configuration diagram showing a fifth embodiment of the air-lift seawater auxiliary propulsion device of the present invention.
8 is a configuration diagram showing a sixth embodiment of the air-lift seawater auxiliary propulsion device of the present invention.

As described above, the conventional air lubrication method of generating air bubbles on the bottom of a ship for eco-friendly ships only reduces frictional resistance between the ship's surface and seawater, but does little to improve the ship's propulsion.

In order to solve this problem, the present invention is mounted on the side of the ship and discharges air-lift seawater lifted by compressed air toward the stern of the ship to provide auxiliary propulsion to the ship, while providing air bubbles discharged together with the air-lift seawater. Provides an air-lift seawater auxiliary propulsion device for an eco-friendly ship with a structure that can reduce the frictional resistance between the surface of the ship and seawater.

The air-lift seawater auxiliary propulsion device of the present invention can be effectively used as an auxiliary propulsion device during propulsion by the main propulsion device of a ship, for example. This invention is provided as various embodiments as follows.

First embodiment of the present invention

First, FIG. 1 is a block diagram schematically showing a first embodiment of an air-lift seawater auxiliary propulsion device 10 according to the present invention, and FIG. 2 is an air-lift seawater auxiliary propulsion device of the present invention disposed on the side of a ship. It is an explanatory view showing an example, and FIG. 3 is an explanatory view showing an enlarged portion of the example shown in FIG. 2 .

The air-lift seawater auxiliary propulsion device 10 of the first embodiment according to the present invention is installed on the side of the ship 12 to obtain auxiliary propulsion from seawater buoyed by compressed air. The air-lift seawater auxiliary propulsion device 10 may be used by being disposed at least one, preferably in plurality, on the side of the ship near the waterline of the ship. In addition, in the present invention, the structure of the air-lift seawater auxiliary propulsion device 10 of the first embodiment may also be included in other embodiments described later.

Referring to FIG. 1, the air-lift seawater auxiliary propulsion device 10 according to the present invention has a vertical upper water pipe 16 that allows seawater to be pumped upward by air-lift and discharges seawater pumped by air-lift. It includes a vertical downward discharge pipe (18). As described in detail later, the length of the lower discharge pipe 18 is designed to be shorter than the length of the upper pumping water pipe 16 .

In addition, the upper water pipe 16 is a long tubular body, and a significant portion of the length, preferably more than half of the length, is disposed in the water below the waterline 14, and the lower end of the water is placed in the bow of the ship 12 A horizontal seawater inlet 20 facing the direction is connected. In addition, in one embodiment of the present invention, the seawater inlet 20 may be included as a part of the upper pumping pipe 16 without being independent of it.

In addition, a connection pipe 22 is disposed on the upper side of the upper water pipe 16 (that is, the portion of the upper water pipe 16 located above the waterline 14), so that the lower discharge pipe 18 connected to the upper part. At this time, the connection pipe 22 is preferably disposed horizontally.

In addition, the lower discharge pipe 18, the upper end of which is connected to the connection pipe 22, has its lower end located in the water below the waterline 14, and a discharge port 24 directed toward the stern is connected to the lower end. When the connection pipe 22 is horizontal, the height of the upper end of the upper pumping water pipe 16 connected to the connection pipe 22 at the upper part of the waterline 14 and the upper end of the lower discharge pipe 18 are approximately the same, but the lower Since the length of the lower discharge pipe 18 is shorter than the length of the upper pumping water pipe 16, the discharge port 24 of the discharge pipe 18 is located at the location of the seawater inlet 20 of the upper pumping water pipe 16. placed in a relatively higher position. In addition, in one embodiment of the present invention, the discharge port 24 may be included as a part of the lower discharge pipe 18 without being independent of it.

In addition, inside the upper pumping water pipe 16, an annular jet ring 26 for ejecting compressed air upward so as to be close to the seawater inlet 20 at the lower end is disposed. The jet ring 26 receives compressed air from the compressed air tank 28 installed in the ship 12 through the connection line 30, and the compressed air tank 28 is supplied from the air compressor 32 connected thereto. The generated compressed air is supplied and stored. In one embodiment, the air compressor 32 may receive power from an eco-friendly power generation facility 34 disposed on the ship 12, and the eco-friendly power generation facility 34 is a known photovoltaic power generation device and/or including fuel cells.

The operation of the air-lift seawater auxiliary propulsion device 10 of the first embodiment of the present invention will be described with reference to FIGS. 1 to 3 as follows.

(i) According to the structure of the air-lift seawater auxiliary propulsion device 10 shown in FIGS. 1 and 3, the upper part connected to the connection pipe 22 of the upper water pipe 16 and the lower discharge pipe 18 is It is disposed at the upper position of the sea level, which is the upper side of the waterline 14, and the position of the seawater inlet 20 at the lower end of the upper pumping pipe 16 in the bow direction is the stern direction. Discharge port 24 of the lower discharge pipe 18 is placed at a deeper position in the water than the position of Due to this structure, even if the air-lift seawater auxiliary propulsion device 10 of the present invention is disposed on the ship 12, the upper water pipe 16 can easily inflow seawater up to the height of the waterline 14 therein do.

(ii) Then, during the propulsion of the ship 12, the compressed air supplied from the compressed air tank 28 through the connection line 30 is directly above the seawater inlet 20 from the inside of the upper pumping pipe 16 It is supplied to the disposed jet ring 26. The compressed air supplied to the jet ring 26 is ejected upward from the seawater in the upper pumping pipe 16 and lifts the seawater in the upper pumping pipe 16 upward in the form of bubbles.

In addition, the seawater that easily flows into the seawater inlet 20 in the bow direction according to the propulsion of the ship and the air bubbles supporting it are transported to the upper side of the upper water pipe 16 together and pass through the connection pipe 22 to the lower side. It is conveyed to the discharge pipe (18).

(iii) Then, the seawater and air bubbles transferred to the lower discharge pipe 18 are discharged with strong force from the discharge port 24 in the stern direction at the lower end of the lower discharge pipe 18. The discharge port 24 is located below the waterline 14 and higher than the seawater inlet 20 of the upper water pipe 16, so that the seawater and air bubbles discharged through the discharge port 24 have a strong driving force And this propulsion effectively assists the propulsion of the ship 12. In addition, air bubbles discharged together from the discharge port 24 act between the side surface of the vessel 12 and the underwater seawater to reduce frictional resistance between them, thereby helping the propulsion of the vessel 12.

As shown in (i) to (iii) above, the air-lift seawater auxiliary propulsion device 10 of the present invention discharges air-lift seawater supported by compressed air produced using eco-friendly power in the direction of the stern of the ship 12 At the same time as effectively providing auxiliary propulsion, air bubbles discharged together with air-lift seawater reduce the frictional resistance between the surface of the ship and the seawater.

Second embodiment of the present invention

4 shows a second embodiment of the air-lift seawater auxiliary propulsion device 10 according to the present invention.

Referring to FIG. 4, the second embodiment of the present invention is the height of the discharge port 24 of the lower discharge pipe 18 according to the change in the height of the waterline 14 with respect to the ship 12 according to the load capacity of the ship 12 is to be able to adjust up and down. As an example of a means for adjusting the height of the discharge port 24, a hydraulic cylinder (not shown) that can be operated by being connected to a sensing means for detecting a change in the waterline 14 may be used, but the present invention It is not limited thereto, and any known means may be used. In this way, even if there is a change in the waterline 14 for the vessel 12, the distance of the discharge port 24 from the waterline 14 is kept constant, so that the auxiliary propulsion force can act efficiently.

Third embodiment of the present invention

5 shows a third embodiment of the air-lift seawater auxiliary propulsion device 10 according to the present invention.

Referring to FIG. 5, in the third embodiment of the present invention, compressed air is supplied from the compressed air tank 28 to the jet ring 26 through the connection line 30, and the compressed air ejected in the form of bubbles here is seawater In the process of lifting and transporting to the upper water pipe 16, compressed air bubbles reach the connection pipe 22 connecting the upper part of the upper water pipe 16 and the lower discharge pipe 18 to the lower discharge pipe. Before being transported downward along (18), compressed air in a bubble state is collected and sent back to the middle of the pumping pipe 16 upward to promote seawater lifting conditions.

In order to implement such a compressed air feedback structure, a compressed air collector 36 is placed in the connection pipe 22 connecting the upper portions of the upper pumping pipe 16 and the lower discharge pipe 18, and thereby pumping the upper pumping water. All or part of the compressed air transported upward along the pipe 16 is collected, and the internal pressure rises and is compressed. In addition, the compressed air is collected by additionally disposing a jet ring 38 for ejecting compressed air in the upper part of the upper amniotic fluid pipe 16 and connecting it to the compressed air collector 36 through a connection line 40. It is possible to supply compressed air collected from the cylinder 36 to the jet ring 38. In one embodiment, since the pressure of the compressed air supplied from the compressed air collector 36 is relatively weak, the jet ring 38 supplied with the compressed air is designed to (14) can be placed nearby.

Thus, in the upper water pipe 16, [compressed air tank 28-connection line 30] / [sea water inlet 20] - air-lifting seawater and air bubbles from the jet ring 26, The feedback and compressed [compressed air collector 36-connection line 40]-air-buoyant seawater and air bubbles from the jet ring 38 are combined and discharged together to the lower discharge pipe 18, thereby doubling the discharge amount , thereby increasing the effect of reducing auxiliary propulsion and frictional resistance.

In FIG. 5 showing the third embodiment of the present invention, the same reference numerals are assigned to components identical and similar to those of the first or second embodiment, and further detailed descriptions thereof are omitted.

On the other hand, in this specification, to differentiate from the jet ring 26 of the first embodiment of the present invention, for convenience of description, the jet ring 26 of the first embodiment is referred to as a “first jet ring 26” and the third embodiment The jet ring 38 of is referred to as "second jet ring 38". Likewise, the jet rings mentioned in the later embodiments are marked with ordinal numbers such as "third" or "fourth", respectively.

Fourth embodiment of the present invention

6 shows a fourth embodiment of the air-lift seawater auxiliary propulsion device 10 according to the present invention.

Referring to FIG. 6, in the fourth embodiment of the present invention, in the structure of the air-lift seawater auxiliary propulsion device 10 of the first embodiment, an aberration driven by the discharged seawater inside the lower discharge pipe 18 A turbine 42 and an air compressor 44 operated by the water turbine are further disposed. At this time, the aberration turbine 42 rotates by potential energy generated when the seawater transported to the lower discharge pipe 18 falls and passes, and the air compressor 44 rotates the axis to the aberration turbine 42. It can be operated by the rotational force generated by being directly connected through or connected through a gearbox.

In addition, a third jet ring 46 for ejecting compressed air is placed in the middle of the upper pumping water pipe 16, and it receives compressed air generated by the air compressor 44 through the connection line 48 and receives the upper Inside the pumping pipe 16, bubbles of compressed air can assist seawater buoyancy.

According to this structure, [compressed air tank 28-connection line 30]/[seawater inlet 20]-air-lifting seawater and air bubbles from the jet ring 26 and , which is fed back and compressed [water turbine 42-air compressor 44-connection line 48]-air-lifting seawater and air bubbles from the third jet ring 46 are combined to the lower discharge pipe 18 By being discharged together, the discharge amount is doubled, thereby increasing the effect of reducing the auxiliary propulsion force and frictional resistance obtained.

In the drawing of FIG. 6 showing the fourth embodiment, the same reference numerals are given to the same and similar components as those of the previous other embodiments, and overall descriptions or further detailed descriptions will be omitted.

Fifth embodiment of the present invention

7 shows a fifth embodiment of the air-lift seawater auxiliary propulsion device 10 according to the present invention.

Referring to FIG. 7, in the fifth embodiment of the present invention, in the structure of the air-lift seawater auxiliary propulsion device 10 of the first embodiment, the middle part of the lower discharge pipe 18 above the waterline 14 A plurality of air supply tubes 50 extending from the outer periphery of the lower discharge tube 18 to the inner periphery of the lower discharge tube 18 and having upper and lower sides open are disposed around the circumference. In addition, by disposing a compressed air collector 52 on the discharge port 24 of the lower discharge pipe 18, compressed air in the form of bubbles is collected before bubbles and seawater are discharged through the discharge port 24. make it possible In addition, a fourth jet ring 54 for ejecting compressed air is disposed in the middle of the upper water pipe 16, and the compressed air collector 52 and the fourth jet ring 54 are connected to the connection line 56. connect

Accordingly, when the seawater is transported in the discharge direction through the lower discharge pipe 18, the supply of external air to the transported seawater through the plurality of air supply tubes 50 disposed in the middle of the lower discharge pipe 18. Air is supplied and the air supplied is pressurized by the discharge pressure of the seawater being discharged.

In addition, in the compressed air collector 52 disposed on the discharge port 24 of the lower discharge pipe 18, bubbles of compressed air transported together with seawater through the upper pumping pipe 16 and the air supply tube ( 50), the air bubbles that are supplied and transported are collected.

And, the compressed air collected in the compressed air collector 52 is supplied to the fourth jet ring 54 for ejecting compressed air in the middle of the upper water pipe 16 through the connection line 56.

According to this structure, [compressed air tank 28-connection line 30]/[seawater inlet 20]-air-lifting seawater and air bubbles from the jet ring 26 and , Air-lift seawater and air bubbles from the feedback and compressed [air supply tube 50-connection line 56]-the fourth jet ring 54 are combined and discharged together to the lower discharge pipe 18, so that the discharge amount thereof This increases the effect of reducing auxiliary propulsion and frictional resistance.

In the drawing of FIG. 7 showing the fifth embodiment, the same reference numerals are attached to the same and similar components as those of the previous other embodiments, and overall descriptions or further detailed descriptions will be omitted.

6th Embodiment of this invention

8 shows the main components of the first embodiment of FIGS. 1 to 3, the second embodiment of FIG. 4, the third embodiment of FIG. 5, the fourth embodiment of FIG. 6, and the fifth embodiment of FIG. The shown sixth embodiment constituted by combining all of them is shown. However, according to the present invention, FIG. 8 is not intended to show a structure in which all of the structures of the first to fifth embodiments are combined, but rather to show a structure in which one or more of these embodiments are combined.

For convenience of the present invention technology, a combination of all the main components of the first to fifth embodiments will be defined and described as the sixth embodiment. The structure of each and every embodiment will also be clearly understood and appreciated.

Referring to FIG. 8, in the sixth embodiment of the present invention, an upper pumping pipe 16 having a seawater inlet 20 for introducing seawater below the waterline 14 at the lower end and a connecting pipe 22 at the upper end A downward discharge pipe 18 connected to is disposed on the side of the vessel 12. The connection pipe 22 is located above the waterline 14, and the discharge port 24 at the lower end of the lower discharge pipe 18 is located in seawater below the waterline 14. Inside the upper water pipe 16, a first jet ring 26, a second jet ring 38, a third jet ring 46, and a fourth jet ring 54 for ejecting compressed air are disposed. The first jet ring 26 is connected to the compressed air tank 28 disposed in the ship 12 through a connection line 30. A compressed air collector 36 is disposed on the connection pipe 22 and is connected to the second jet ring 38 through a connection line 40. An aberration turbine 42 is disposed inside the upper part of the lower discharge pipe 18, and an air compressor 44 driven thereby is disposed on the upper part of the lower discharge pipe 18. The air compressor 44 is connected to the third jet ring 46 through a connection line 48. In the middle of the lower discharge pipe 18, a plurality of air supply tubes 5 are disposed so that external air can be supplied by extending from the outside to the inside, and a compressed air collector 52 is disposed above the discharge port 24. It is connected to the fourth jet ring 54 through a connecting line 56.

In the embodiment of FIG. 8, as mentioned above, the main components of each embodiment are combined, and the action and effect of these main components are the same as those mentioned in each embodiment, and overall, the pumping efficiency and / or It can assist the propulsion of the ship by increasing the discharge efficiency, and can contribute to reducing the frictional force between the ship and the sea.

Various preferred embodiments and examples of the present invention described above have been disclosed for illustrative purposes, and anyone skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, Such modifications, changes, additions, etc., shall be regarded as falling within the scope of the claims.

10: Air-lift seawater auxiliary propulsion device
12: ship
14: waterline
16: upper water pipe
18: lower discharge pipe
20: sea water inlet
22; connector
24: discharge port
26: first jet ring
28: compressed air tank
30: connection line
32: air compressor
34: Solar power plant
36: compressed air collector
38: second jet ring
40: connection line
42: water turbine
44; air compressor
46: 3rd jet ring
48: connection line
50: air supply customs
52: compressed air collector
54: 4th jet ring
56; connection line

Claims (9)

In the air-lift seawater auxiliary propulsion device 10 that is disposed on one or more sides of the ship 12 to provide propulsion to the ship 12,
A tubular body elongated in the longitudinal direction, the lower part of which is located in the water below the waterline 14 of the vessel 12, and has a seawater inlet 20 at the lower end toward the bow of the vessel 12 and through which seawater flows. water pipe 16;
A compressed air tank 28 for storing compressed air;
It is disposed in a position close to the seawater inlet 20 so as to be submerged in the seawater introduced from the upper pumping pipe 16 and is connected to the compressed air tank 28 to receive compressed air and form bubbles in the introduced seawater. An annular first jet ring 26 that lifts seawater by ejecting it upward;
As a tubular body spaced apart from the upper water pipe 16 and extending in the longitudinal direction, the lower part is located in the water below the waterline 14 of the vessel 12, and the lower part faces the stern of the vessel 12, but the a lower discharge pipe 18 having a discharge port 24 located relatively higher than the sea water inlet 20; and
Connecting pipes 22 communicating with each other at the upper ends of the upper amniotic fluid pipe 16 and the lower discharge pipe 18
include,
The seawater introduced from the seawater inlet 20 is transported along with the air bubbles to the flow path composed of the upper pumping water pipe 16, the connection pipe 22, the lower discharge pipe 18, and the discharge port 24 in this order. And the air-lift seawater auxiliary propulsion device 10, characterized in that discharged from the discharge port 24 toward the stern of the ship 12. According to claim 1,
a first compressed air collector 36 disposed on the connection pipe 22 and storing the compressed air collected therein by collecting the air bubbles in the seawater passing through the connection pipe 22; and
It is disposed on the upper side of the first jet ring 26 in the upper amniotic fluid pipe 16 and is connected to the first compressed air collector 36, and the collection from the first compressed air collector 36 The second jet ring 38 that lifts the seawater by receiving compressed air and ejecting it upward in the form of bubbles in the seawater
Air-lift seawater auxiliary propulsion device 10, characterized in that it further comprises. According to claim 1,
A water turbine 42 disposed in the lower discharge pipe 18 and rotated by seawater falling in the lower discharge pipe 18;
An air compressor (44) operated by the rotational force of the aberration turbine (42) and compressing external air; and
It is disposed on the upper side of the first jet ring 26 in the upper pumping pipe 16 and is connected to the air compressor 44, and receives the compressed air from the air compressor 44 and receives seawater. The third jet ring 46, which lifts seawater by ejecting it upward in the form of bubbles,
Air-lift seawater auxiliary propulsion device 10, characterized in that it further comprises. According to claim 1,
An upper end opening exposed to the outside air and arranged to extend from the outer periphery of the lower discharge pipe 18 to the inner periphery of the lower discharge pipe 18 around the lower discharge pipe 18 and the lower discharge pipe A plurality of air supply tubes having a lower opening exposed to the inside of (18) and supplying air in the form of air bubbles in the seawater passing through the lower discharge pipe 18 at the lower end opening of the outside air introduced into the upper opening ( 50);
A second compressed air collector 52 disposed on the outlet 24 and passing through the plurality of air supply tubes 50 to collect air bubbles in the seawater passing through the outlet 24 to store compressed air collected therein. ); and
It is disposed on the upper side of the first jet ring 26 in the upper amniotic fluid pipe 16 and is connected to the second compressed air collector 52, and the stored water from the second compressed air collector 52 The fourth jet ring 54, which receives compressed air and blows it upward in the form of bubbles in the seawater, lifts the seawater.
Air-lift seawater auxiliary propulsion device 10, characterized in that it further comprises. According to any one of claims 1 to 4,
An air compressor (32) loaded on the ship (12) and producing compressed air stored in the compressed air tank (28) using at least one of a photovoltaic power generation device and a fuel cell as a power source. Air-lift seawater auxiliary propulsion device (10). According to any one of claims 1 to 4,
Air-lift seawater auxiliary propulsion device, characterized in that the position of the discharge port 24 of the lower discharge pipe 18 is adjusted up and down according to the change in the height of the waterline 14 according to the load of the ship 12 ( 10). An air-cushion seawater auxiliary propulsion device (10), characterized in that one or more of the air-cushion seawater auxiliary propulsion devices (10) according to claims 2 to 4 are combined. According to claim 7,
Air-lift seawater auxiliary propulsion device, characterized in that the position of the discharge port 24 of the lower discharge pipe 18 is adjusted up and down according to the change in the height of the waterline 14 according to the load of the ship 12 ( 10). According to claim 7,
An air compressor (32) loaded on the ship (12) and producing compressed air stored in the compressed air tank (28) using at least one of a photovoltaic power generation device and a fuel cell as a power source. Air-lift seawater auxiliary propulsion device (10).

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