KR101825849B1 - Ship Ballast and Propulsion System that Using Ballastwater Flow Based on Axleless Motor - Google Patents

Abstract

The present invention relates to a ballast water processing and propulsion system of a vessel using an axle-less motor. In particular, the system makes the ballast water sequentially flow to the outside, the inside, and the outside of the vessel in real time, or introduced or discharged to attain an original purpose of the ballast water, however, the ballast water is introduced and discharged in real-time, thus being not contaminated, thereby not requiring treatment of the ballast water. Moreover, a waterproof motor to discharge the ballast water and a rotary shaft (axle) space of a rotor of the waterproof motor is evacuated and a spiral screw is coupled to the space, such that the motor is suitable for transferring gas and liquid. As the waterproof motor embedded in a state of not including a bearing is rotated, mechanical friction is reduced to enhance rotational efficiency. Cavitation generated in a propeller of the vessel is inhibited through a cylindrical structure outside the rotor and power is consumed inside a stator of the motor from which the power is generated, thereby providing good vessel propulsion efficiency. Moreover, the vessel is easily rotated to left and right sides, and is easily propelled forward and backward in accordance with an installation position, the number, and a rotational direction of the motors, thereby not requiring a tugboat when mooring the vessel.

Description

Technical Field [0001] The present invention relates to a ballast water treatment and propulsion system using an axleless motor,

The present invention relates to a ballast water treatment and propulsion system using an axleless motor, and more particularly, to a ballast water treatment and propulsion system using an axleless motor, more specifically, to control the ballast water flow in the vessel One is a waterproof motor for discharging ballast water because it does not pollute because it inflows and discharges ballast water in real time and discharges ballast water. It is a waterproof motor for discharging ballast water, and a spiral screw It is suitable for gas and liquid conveyance of the motor itself and rotates the built-in water-proof motor without bearings, thereby reducing the mechanical friction, thereby improving the rotation efficiency and causing the propeller cavitation of the ship through the outer cylindrical structure of the rotor And the power is consumed inside the motor stator in which the force is generated, The present invention relates to a ship equilibrium water treatment and propulsion system utilizing an axleless motor designed to avoid the need for a tugboat when the ship is stowed, because the propulsion efficiency is good and the propulsion of the ship is facilitated by rotating the shaft laterally or back and forth depending on the motor installation position and number, .

Conventional ships are equipped with ballast tanks that fill seawater for odd control and ship stability according to the cargo volume of the ship. In this case, as the volume of cargo increases or decreases, the amount of ballast water flowing into the ship will vary, and ballast water needs to be replenished and discharged as necessary. However, the ballast water which is once introduced at the start of the ship discharges the ballast water on the way to the intermediate point of the ship or the final destination, in which the water left in the closed ballast tank is contaminated. For this reason, the International Maritime Organization and the US Coast Guard regulate the discharge of contaminated ballast water in ballast water discharge based on the BWMS (Ballast Water Treatment System) regulations.

In this case, FIG. 1 shows a ship equilibrium system using a conventional ballast tank and ballast water. Referring to FIG. 1, the water that maintains the equilibrium of the ship in the ballast tank is called a ballast water And the ballast is maintained by discharging or introducing this ballast water. However, it is necessary to periodically discharge the ballast water from the ballast tank and to re-introduce the ballast water, that is, to replace the ballast water. This is to prevent pollution caused by the long use of the ballast water located in the tank, It is good to change the ballast water often to the life of the tank. At this time, the exchange of the ballast water is generally performed through a discharge device including a separate motor and a pump. However, the method of using this discharge device is considered to be a more economical way of exchanging the water in the ballast tank since the consumption of energy occurs.

In addition, in the case of conventional propeller-type ship propulsion, cavitation phenomenon occurs according to the shape of the propeller, so that stability and propulsion efficiency of the ship are lowered, and propeller life is shortened. Particularly, the propeller installed at the stern is blocked by propeller shaft and power source, and propeller efficiency is low due to hull, and the propeller protruding out of hull is easily damaged by external impact. Since the turning radius is large due to the rotation of the direction key, a separate propeller is attached to the player for easy left and right rotation. Therefore, it can be said that the structure lags behind in terms of cost and efficiency.

To overcome this, improved methods and structures utilizing the following equilibrium have been filed in Korea.

According to Korean Patent No. 1344687, at least one injection nozzle is installed at the stern of the hull to induce a double inversion propulsion effect, and the injection nozzle is installed to spray water toward the surface of the propeller in a direction opposite to the rotation direction of the propeller (EN) The present invention relates to a pump system for reducing water injection fuel, and more particularly, to a pump system for reducing water injection fuel, which is capable of suppressing cavitation generation, improving propulsion efficiency, and minimizing vibration by inducing a fluid acceleration toward a propeller by a simple structure of a double reversing propeller Since there is no additional attachment on the shell plating, there is no additional increase in hull resistance, and secondary damage of the propeller or shafting system due to adherend failure is fundamentally prevented. However, if direction and speed control of the propeller are required, Since the injection nozzle according to the invention injects water only in one direction It is difficult to utilize, it is thus difficult to utilize Although the rotation driving assistance or towing vessel other than a simple process of advancing issues Application seems no structural improvement.

In addition, Korean Patent No. 0463007 discloses a water inlet 11, a water outlet 14 in the ballast tank, and a water outlet 14 provided in a part of a ship where the water pressure acting on the ship when the ship moves forward from the water is higher than the water pressure of the ballast water to be exchanged. (5) comprising a water inlet passage (12) extending between the water inlet (11) and the ballast tank (6) for introducing water into the ballast tank at a pressure higher than the ballast water in the ballast tank A system for automatically exchanging ballast water within a tank (6). In this manner, the ballast water is discharged from the ballast tank through the outlet 14 and exchanged for water introduced through the inlet 11. In addition, although a method of exchanging ballast water in a ballast tank of a ship is described, according to this technique, as a method of simply allowing water to be automatically exchanged, cavitation There is a problem that noise is generated due to development and exchange efficiency is low.

Therefore, since the ballast water flows in and out in real time, it does not pollute and it does not require ballast water treatment. It is a waterproof motor for discharging the ballast water. The water shaft of the waterproof motor rotor is emptied and a helical screw , The motor itself is suitable for gas and liquid transfer, and the built-in water-proof motor is rotated without bearings to reduce the mechanical friction, thereby improving the rotation efficiency and the cavitation of the ship propeller through the rotor outer cylindrical structure. It is designed to prevent the need for a tug at the ship's berthing due to the ease of ship propulsion efficiency due to the power inside the motor stator generating the force, Pilot to develop equipments for ballast water treatment and propulsion system using motor The property is emerging.

In addition, the axleless motor referred to in the present invention is a concept originally used through the present invention. In general, a motor rotates around a rotor rotational axis, and the axleless motor empties the axle space of the motor rotor, It is designed to allow fluid movement from the motor itself by combining spiral screws.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure capable of easily discharging ballast water by utilizing a waterproof motor so as to easily discharge ballast water stored in a vessel for a long time, The purpose.

Another object of the present invention is to provide a waterproof motor which is capable of increasing the discharge speed of the ballast water when discharging the ballast water while driving the waterproof motor and preventing the abrasion of the rotor while reducing the mechanical friction, Motor.

Another object of the present invention is to provide a structure in which a ship can continuously maintain equilibrium even when ballast water is discharged or introduced by applying a special structure to a ballast tank for storing ballast water in a ship.

It is a further object of the present invention to provide a structure that can prevent the occurrence of eddy currents when ballast water is introduced or discharged from the ballast tank.

It is a further object of the present invention to provide a structure capable of removing bubbles generated when a ballast water moves at a high speed in a motor discharging ballast water.

It is a further object of the present invention to provide a method and apparatus for controlling the flow of a ballast water into a ship and a passage for discharging the ballast water by flowing seawater naturally flowing into the motor even if the ballast water does not discharge, .

It is a further object of the present invention to provide a configuration in which an axleless motor is installed at various positions so that it can be utilized not only for propulsion of a ship but also for rotation of a ship.

In order to achieve the above object, a ballast water treatment and propulsion system utilizing an axleless motor according to the present invention comprises a plurality of ballast tanks installed in a hull to store ballast water, and connected to each other through an inlet pipe and a discharge pipe, ; A pressure regulating valve attached to one side of the ballast tank for controlling a pressure inside the ballast tank; And an axleless motor that is attached to one side of the discharge pipe and rotates through the flow of the discharged ballast water to promote discharge of the ballast water.

Further, the discharge pipe may include a first discharge pipe extending from one side of the ballast tank to one side of the rear side of the ship so as to discharge the ballast water from one side of the rear side of the ship, And a second discharge pipe extending from one side of the ballast tank so as to discharge water toward one side of the side of the ship.

In addition, the ballast tank is further provided with a rotating spiral partition wall extending spirally from the one side of the side surface of the ballast tank to which the inlet pipe is connected, toward the central portion at regular intervals, The discharge pipe is connected to one side of the central portion of the ballast tank so that the ballast water can be discharged in the order in which the ballast water is introduced into the ballast tank.

In addition, the axleless motor is inserted and fixed in the middle of the discharge pipe, and has an inner diameter larger than the inner diameter of the discharge pipe, and a rotating space is formed in the inner side with a plurality of winding modules for rotational energy installed therein A screw type impeller having a diameter corresponding to an inner diameter of the discharge pipe; a rotor enclosing the screw type impeller and having a plurality of magnetic bodies inserted therein and rotatably inserted in the rotary space; And a rotor for rotating the rotor.

The stator may further include a first stator piece inserted into the rotor and formed with an inlet groove into which ballast water flows at a position facing the ballast tank, And a second stator piece having discharge grooves through which the ballast water that has passed through the rotor is discharged.

At least one coupling groove is formed in the coupling portion between the first stator piece and the second stator piece, and a coupling hole is further formed in a portion of the second stator piece corresponding to the coupling groove, And the first stator piece and the second stator piece are engaged with each other by inserting the fastening means into the hole so as to be fitted into the fastening groove.

As the rotor rotates, the rotor rotates at a position corresponding to the surface of the rotor on the surface of the first stator, on which the inlet groove is formed, so that the rotor reacts with the built- And a magnetic levitation module for allowing some ballast water passing through the inlet groove to flow into the spaced space between the stator and the rotor.

In addition, a plurality of oblique grooves inclined by an oblique line are formed on the inner surface of the first stator piece facing the rotor at regular intervals to promote the discharge of the ballast water.

The rotor further includes a first inclined portion inclined from a side of the surface facing the inflow groove toward a central portion where the screw-shaped impeller is located, and a second inclined portion inclined from a side of the surface in the direction facing the discharge groove A second inclined portion projecting obliquely toward the discharge groove is formed, and an auxiliary protruding portion protruding in a shape corresponding to the first inclined portion is formed at a position facing the first inclined portion of the first stator piece And an auxiliary inclusion part formed so as to correspond to the second inclined part is further formed at a position of the second stator part facing the second inclined part so that inclination of the first inclined part and the inclined part of the second inclined part Thereby promoting the discharge of the ballast water by the screw-type impeller.

The second stator piece may include a fitting cap inserted from a direction in which the screw-type impeller is positioned and surrounding the discharge groove, and a second cap portion surrounding the rotor and the end portion of the fitting cap located between the rotor and the second stator piece. And a space forming part formed of an elastic material and having a plurality of auxiliary through holes formed therein to allow the ballast water to pass therethrough.

According to the ship equilibrium water treatment and propulsion system utilizing the axleless motor according to the present invention,

1) Ballast water is not contaminated due to inhale and discharge of real-time ballast water. BWMS is not required. Ballast water is discharged faster by discharging ballast water by using multiple waterproof motors when discharging ballast water. Quick work is possible,

2) By applying a magnetic body to a waterproof motor for discharging ballast water in particular, it is possible to rotate without any bearing by inducing a magnetic levitation effect, and it is possible to utilize the motor for a long time because friction is hardly generated and wear and noise are reduced,

3) The ballast tank has the effect of maintaining equilibrium of the ship even in the extreme situation where the sea water is generated or the wave is applied by applying the spiral structure and the buffer structure which can help the equilibrium of the ship to maintain the equilibrium of the ship,

4) Further, by applying a structure capable of suppressing the occurrence of vortex in the ballast tank, it is possible to reduce the difficulty of balance control due to unnecessary vortex,

5) The propeller cavitation phenomenon was suppressed through the outer cylinder structure of the propulsion motor rotor,

6) Accelless motors have high efficiency in ship propulsion by consuming the power inside the motor stator where the force is generated. When using the propulsion device of the axleless motor, the water from the forward direction of the ship can be utilized as ship propulsion water, In addition, in the case of a small ship which does not require a ballast water treatment, this configuration can be applied to propulsion,

7) It is possible to turn the ship right and left according to the position and number of the axleless motor installation and motor rotation direction, and to facilitate the propulsion of the ship back and forth.

1 is a conceptual view showing a conventional ship equilibrium system utilizing ballast tanks and ballast tanks in a ship.
FIG. 2 is an overall configuration view of an axleless motor according to the present invention and a marine vessel propulsion system using the same.
3 is a structural cross-sectional view of the ship system;
4 is a cross-sectional view showing the internal shape of the ballast tank.
5 is a perspective view of the axleless motor of the present invention.
6 is a cross-sectional view of the axleless motor of the present invention.
FIG. 7 is a longitudinal sectional view showing a magnet levitation module applied to an axleless motor according to the present invention. FIG.
8 is a cross-sectional view showing various shapes of the rotor.
9 is an assembled perspective view of a seating cap surrounding the discharge groove;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale and wherein like reference numerals in the various drawings refer to like elements.

FIG. 2 is an overall configuration diagram of an axleless motor 300 according to the present invention and a marine vessel propulsion system (hereinafter referred to as a marine vessel system). FIG. 3 is a structural cross-sectional view of the marine vessel system.

The ballast water treatment and propulsion system utilizing the axleless motor of the present invention includes a ballast water treatment and propulsion system that is installed inside the hull and stores the ballast water 20 and includes a plurality of ballast A tank 100; A pressure regulating valve (200) attached to one side of the ballast tank (100) to control a pressure inside the ballast tank (100); And an axleless motor 300 which is attached to one side of the discharge pipe 500 and rotates through the flow of the discharged ballast water 20 to facilitate the discharge of the ballast water 20.

The ballast tank 100 is installed inside the hull of the ship 10 and basically has one or more left and right sides for the purpose of matching the equilibrium of the ship 10. The number of the ballast tanks 100 can be increased as necessary, It is possible to further retain the ballast tank 100 on the central portion or on the front and rear surfaces. In the case of the ballast tank 100, as shown in FIG. 2, two or more tanks are held on one side (before and after), and the amount of water stored in each ballast tank 100 is adjusted, In addition to being able to match, it is equally applied to the left and right so that the left and right balance can be adjusted as well. The ballast tank 100 is connected to the inflow pipe 400 and the discharge pipe 500. The ballast tank 100 receives the ballast water 20 through the inflow pipe 400 and the ballast tank 100 through the discharge pipe 500, And discharges the ballast water 20 stored therein. In general, the inflow pipe 400 is located at a portion where the inflow of water is easy, and preferably extends from the front end of the inflow pipe 500. The inflow pipe 500 is connected to the inflow pipe 500, As shown in FIG. The inflow pipe 400 and the discharge pipe 500 are connected to each other by the ballast tank 100 so that the ballast water 20 introduced from the inflow pipe 400 through the control valve 200 is discharged directly to the discharge pipe 500, or a separate piping (not shown) for directly connecting the inflow pipe 400 and the discharge pipe 500 may be further applied. Therefore, in the present invention, not only the ballast water 20 stored in the ballast tank 100 but also the ballast water 20 introduced from the inflow pipe 400 in real time can be utilized as ship propulsion water.

The pressure control valve 200 is attached to one side of the ballast tank 100 and controls the internal pressure of the ballast tank 100 to control the pressure in the ballast tank 100 through the inlet pipe 400 and the discharge pipe 500. [ (20) in the ballast water (20). It goes without saying that a separate controller (not shown) may be further included for such control.

Finally, the axleless motor 300 is attached to one side of the discharge pipe 500 and functions to accelerate the discharge of the ballast water 20 by rotating through the flow of the discharged ballast water 20. The ballast 20 moves in a desired direction through the driving of the axleless motor 300 in a floating state on the water surface due to the characteristic of the vessel 10 floated in the water, Thereby maintaining the equilibrium of the vessel 10 while controlling the ballast water 20 in the built-in tank. However, the ballast 20 needs to be periodically replaced as described in the background description above.

In the case of the axleless motor 300 of the present invention, the ballast 20 is connected to one side of the discharge pipe 500 through which the ballast water 20 is discharged, thereby propelling the ship 10 by driving the axleless motor 300 And also serves to accelerate the discharge of the ballast water 20 incorporated therein. Needless to say, it is also possible to have an advantage that the rotation of the axleless motor 300 can be partially assisted with the discharge of the ballast water 20. Therefore, a waterproof motor having a waterproof treatment should be used because the axleless motor 300 basically needs to pass the ballast water 20. When a waterproof motor is used, a waterproof coating It is necessary to add sufficient waterproof treatment such as joint treatment and there should be no problem in underwater utilization.

In this case, as described in the foregoing description, it is assumed that the discharge pipe 500 can extend toward the side surface or the rear surface of the ship 10, that is, the discharge pipe 500 is connected to the rear surface of the ship 10 A first discharge pipe 510 protruding from one side of the ballast tank 100 toward one side of the rear side of the ship 10 so as to discharge the ballast water 20 from the side of the ship 10, And a second discharge pipe 520 extending from one side of the ballast tank 100 to one side of the ship 10 so as to discharge the ballast water 20 from one side.

The first discharge pipe 510 is formed toward the rear surface of the ship 10 and the second discharge pipe 520 is formed toward the side surface of the ship 10. At this time, when the ballast water 20 is discharged by the control of the pressure regulating valve 200, both the discharge pipes 500 may be used, and if necessary, another partitioning member (not shown) may be further installed And it is also possible to control to use only the first discharge pipe 510 or the second discharge pipe 520 as necessary.

4 is a cross-sectional view showing the internal shape of the ballast tank 100. As shown in Fig.

The ballast tank 100 has a structure in which the ballast tank 100 is spirally extended from the side of one side of the ballast tank 100 to which the inflow pipe 400 is coupled, And a rotary spiral partition wall 110 for forming a rotating space is further provided and the discharge pipe 500 is coupled to one side of a central portion of the ballast tank 100.

That is, when the ballast tank 100 is viewed from above or below, one side of the ballast tank 100 is coupled with the inflow pipe 400 to introduce the ballast water 20 into the inflow pipe 400, The rotating helical barriers 110 extend spirally toward the central portion of the ballast tank 100 from the periphery of the portion coupled with the ballast tank 100. In particular, when the rotary spiral partition wall 110 is installed, the rotary space has a predetermined gap. The ballast tank 100 receives the ballast water 20 through the structure of the rotary spiral partition wall 110. In the case of the structure of the rotating spiral partition wall 110, unlike the conventional simple tank structure, since the ballast water 20 is filled in from the inner central portion close to the discharge pipe 500 in the order of the flow of the ballast water 20, It is easy to control so as to be discharged from the old ballast water 20. In addition to the simple tank structure, even when the ballast shakes violently in various directions due to additional waves or currents in the process of discharging the ballast water 20, The ballast water 20 which has not been discharged moves quickly so as to maintain the equilibrium, so that stable equilibrium retention can be expected even in an emergency occurring during discharging of the ballast water 20.

Fig. 5 is a perspective view of the axleless motor 300 of the present invention, Fig. 6 is a cross-sectional view of the axleless motor 300 of the present invention, and Fig. 7 is a cross-sectional view of the axleless motor 300 of the present invention Fig. 8 is a cross-sectional view showing various shapes of the rotor 322. Fig.

The axleless motor 300 is inserted and fixed in the middle of the discharge pipe 500 and includes a cylindrical stator 310 having a plurality of rotational energy winding modules 311 formed thereon, A screw type impeller 321 having a diameter corresponding to the inner diameter of the screw type impeller 321 and a rotor 322 enclosing the screw type impeller 321 and having a plurality of magnetic bodies inserted therein and rotatably inserted into the rotary space And a rotor 320 which is rotatable about the axis of rotation.

The stator 310 is formed in a cylindrical shape as shown in the drawing, and is inserted or fixed in the middle of the discharge pipe 500. A plurality of winding modules 311 for rotational energy are formed inside the stator 310. The winding module 311 means a kind of electromagnet and is used for rotating the rotor 320 .

The rotor 320 is installed inside the hollow of the cylindrical stator 310 and preferably includes a screw type impeller 321 rotatable with a diameter corresponding to that of the discharge pipe 500 . The stator 310 is provided with a winding module 311 for rotating energy. The rotor 320 is made of a metal material such as iron or the like and can induce the screw to continuously rotate through magnetic induction. In particular, since the screw-type impeller 321 can continuously move the ballast water 20, which is rotated and moved, as shown in the drawing, (20) can be easily discharged. Further, when the boat is propelled, the rotation speed of the rotor 320 is increased, and the ship 10 can be advanced, reversed, or clockwise rotated through a force generated by the injection of the ballast water 20 Of course.

6 and 8, the stator 310 is formed at a position facing the ballast tank 100 to form an inflow groove 313 through which the ballast water 20 flows, and the screw- A first stator piece 330 having a first impeller 321 embedded therein and a second stator piece 330 laminated so as to be coupled to a rear side of the first stator piece 330. The ballast water 20 having passed through the screw impeller 321 is discharged And a second stator piece 340 having discharge grooves 315 formed therein.

The first stator piece 330 and the second stator piece 340 are divided into the first stator piece 340 and the second stator piece 340 without any expensive cleaning equipment, There is an advantage that the first stator piece 330 is disengaged and the rotor 320 can be taken out and exchanged or cleaned.

Here, the method of joining the first stator piece 330 and the second stator piece 340 may be a known method such as a known adhesive, soldering, male-female coupling, separate banding device, fastener insertion, Preferably, at least one coupling groove 333 is formed at the coupling portion of the first stator piece 330 with the second stator piece 340, and at least one coupling groove 333 is formed in the second stator piece 340, (Fastener) is inserted into the fastening hole 341 so as to be inserted into the fastening hole 333 so that the fastening hole 341 is formed at a portion corresponding to the fastening hole 333, So that the first stator piece 330 and the second stator piece 340 are coupled to each other.

It is also important to maintain the width and shape of the second stator piece 340 around the discharge groove 315 in an essentially cylindrical shape because when the ballast 20 is moved at a high speed while being discharged, This is to prevent occurrence of a cavitation phenomenon that occurs. This will be described in more detail in the following, since it will be further detailed through addition of the configuration of the seating cap 343 to be described later.

In addition to the above configuration, a configuration for manifesting a magnetic levitation phenomenon may be further included when the screw is rotated. The rotor 322 is rotated at a position corresponding to the surface of the rotor 322 on the surface of the first stator piece 330 on which the inflow groove 313 is formed so as to react with the built- 322 are spaced apart from the first stator piece 330 by a predetermined distance and a part of the ballast water 20 passing through the inflow groove 313 is separated from the stator 310 and the rotor 320 The magnetic levitation module 332 may be further included. The magnetic levitation module 332 has a structure similar to that of the winding module 311. The magnetic levitation module 332 uses a magnetic body built in the rotor 322 to react with the magnetic body when the rotor 322 is rotated to generate a repulsive force, So that the gap between the rotor 330 and the rotor 322 is spaced by a certain distance. As a result, the rotor 320 is completely separated from the stator 310 to exhibit a magnetic levitation effect, so that there is no friction, so that no noise or wear occurs. In addition, a part of the ballast water 20 may be introduced into the interstice space caused by the magnetic levitation effect, and may be passed through the interstice space. Such a configuration may cause the phenomenon that the flow velocity is increased to induce the Bernoulli phenomenon, So that the discharge speed of the ballast water 20 is further improved.

7, the inner surface of the first stator piece 330 facing the rotor 320 is further formed with a plurality of oblique grooves 331 inclined at a predetermined interval from each other. The oblique groove 331 has a role similar to that of the groove formed in the muzzle and serves to assist the ballast water 20 to be moved more quickly through the oblique groove 331. That is, when the rotor 320 reaches a constant speed after the rotor 320 starts to rotate, the oblique groove 331 tries to be vacuumed according to Bernoulli's law according to the flow of the fluid, 331, the movement speed of the ballast water 20 is further increased.

In this configuration, the ballast water 20 passes through the interior of the axleless motor 300 while rotating faster than the existing simple pipe even if the internal space of the same stator 310 is utilized. The phenomenon that the velocity of the impeller 321 is accelerated can also be explained by the Bernoulli effect. It can be explained as the property that the velocity of the fluid becomes faster as the cross section of the pipe becomes narrower when the flow rate is the same. The ballast water 20 can be discharged at a very high flow rate compared with the conventional one.

The screw-type impeller 321 can also be used in a variety of applications such as scratching or pinching the inner surface of the stator 310 through magnetic levitation phenomenon, as the title of the present invention utilizes an axleless motor It is advantageous in that it does not require a bearing or an additional shaft protruded unlike the conventional motor type, thereby reducing noise and vibration caused by the rotation of the motor. to be.

8, the shape of the rotor 322 will be described in more detail. The rotor 322 has a central portion in which the screw-type impeller 321 is located from one side of the surface in the direction facing the inflow groove 313 And a second inclined portion 324 projecting obliquely toward the discharge groove 315 from one side of the surface in the direction facing the discharge groove 315 are further formed on the first inclined portion 323 inclined toward the discharge groove 315 And an auxiliary protrusion 334 protruding from the first stator part 330 in a position corresponding to the first slant part 323 is formed at a position facing the first slant part 323, The auxiliary inclined portion 342 formed in the second stator piece 340 in a shape corresponding to the second inclined portion 324 is further formed at a position facing the second inclined portion 324 .

That is, the rotor 322 has a special shape in front of and behind the cylindrical rotor 322, and the rotor 322 has a surface facing the front inlet inflow groove 313, The first inclined portion 323 inclined toward the central portion where the impeller 321 is located and the first inclined portion 323 discharged from one side of the surface in the direction opposite to the rearward output groove 315 of the rotor 322 in a shape corresponding thereto And a second inclined portion 324 which is inclined toward the groove 315 is formed.

Here, as shown in the figure, when the portion where the screw-type impeller 321 is located is referred to as a central portion, it means any one of the remaining portions except the central portion, and the first inclination And the second inclined portion 324 is formed in a shape protruding from the rear. As described above, the inclined surface is configured to further amplify the Bernoulli effect by the ballast water 20 passing between the stator 310 and the rotor 320. Therefore, if the inclined surface is formed at a position where the inclined surface can be formed No matter where the starting point of each slope is located, there is no significant effect. However, since the increase / decrease width of the flow velocity varies depending on the inclination angle of the inclined surface or the length thereof, if the desired control width exists, it is preferable to form the inclined surface according to the control width.

When the first inclined portion 323 and the second inclined portion 324 are formed in the rotor 322 as described above, the stator 310 (the first stator piece 330 and the second stator piece 340) It is necessary to form the auxiliary projection 334 and the auxiliary depression 342 respectively. It is also necessary that an interspace be formed between the first inclined portion 323 and the auxiliary projection 334 and between the second inclined portion 324 and the auxiliary depression 342, (20) may be introduced.

9 is an assembled perspective view of the seating cap 343 surrounding the discharge groove 315. FIG.

Further, the second stator piece 340 may further include a seating cap 343 surrounding the discharge groove 315 to prevent the screw type impeller 321 from being damaged due to scratching or collision.

That is, the seating cap 343 includes a fitting cap 344 which is inserted from the direction in which the screw-type impeller 321 is positioned and surrounds the discharge groove 315, and a fitting cap 344 surrounding the rotor 322 and the second stator piece 340 extending from the end of the fitting cap 344 to a position spaced apart from the rotor 322 by a predetermined distance and being made of an elastic material so as to allow the ballast water 20 to pass therethrough, And an interval forming portion 345 in which the groove 346 is formed.

The fitting cap 344 is formed in a shape corresponding to the discharge groove 315 so as to be fitted in the discharge groove 315 and is fixed through a tight fitting structure, 345 protrude from the seating cap 343 toward the screw-type impeller 321. In this case, it is preferable that the seating cap 343 is made of an elastic material such as rubber, synthetic resin or sponge. That is, the interval forming portion 345 protrudes toward the screw type impeller 321, and the screw type impeller 321 May be pushed backward by a high flow velocity while being rotated, or may be detached from the rotor 322 and hit the discharge groove 315. At this time, the interval forming portion 345 of the seating cap 343 is first brought into contact with the screw type impeller 321, and the interval forming portion 345 is made of a sufficiently soft elastic material so that the impact of the screw type impeller 321 It is possible to mitigate and prevent breakage, but also to be able to rotate to the point of time at which repair can be performed.

Accordingly, in the case of the gap-forming portion 345, it is also possible to form the end portion into a round shape or increase the thickness further if necessary. Since the plurality of auxiliary through grooves 346 are further formed in the gap forming portion 345, the ballast water 20 can be moved through the auxiliary through grooves 346 and the screw type impeller 321 It is possible to drive even when it is abutted, and furthermore, the outlet is narrowed by the Bernoulli's law, so that an additional effect of increasing the flow velocity can be expected.

Also, as mentioned in the foregoing description, the ballast water 20 that has passed through the axleless motor 300 may cause a cavitation phenomenon in which bubbles are generated due to a rapid pressure change. This cavitation phenomenon is caused by noise and vibration due to air bubbles, and further erosion may occur. Therefore, a method for minimizing this phenomenon is needed. Accordingly, the addition of such a seating cap 343 can reduce the rapid pressure change by maintaining the inner diameter, width, shape, and the like of the discharge port even when the pressure of the screw type impeller 321 changes due to the rotation of the impeller 321 and the water pressure Of course.

As described above, the structure and operation of the ship equilibrium system utilizing the axleless motor rotating through the in-ship equilibrium water flow according to the present invention have been described above and illustrated in the drawings. However, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention.

10: Ship 20: Ballast water
100: ballast tank 110: rotating helical bulkhead
200: Pressure regulating valve 300: Axleless motor
310: stator 311: winding module
313: inlet groove 315: exhaust groove
320: Rotor 321: Screw type impeller
322: rotor 323: first inclined portion
324: second inclined part 330: first stator part
340: second stator piece 331: oblique groove
332: magnetic levitation module 333: fastening groove
334: auxiliary protrusion 341: fastener
342: auxiliary depressed portion 343: seating cap
344: Fitting cap 345:
346: auxiliary penetration groove 350: fastening means
400: inlet pipe 500: exhaust pipe
510: first exhaust pipe 520: second exhaust pipe

Claims (10)

As a ballast water treatment and propulsion system using an axleless motor,
A plurality of ballast tanks installed inside the hull to store the ballast water, and interconnected through the inflow pipe and the discharge pipe;
A pressure regulating valve attached to one side of the ballast tank for controlling a pressure inside the ballast tank;
And an axleless motor which is attached to one side of the discharge pipe and rotates through a flow of the discharged ballast water to promote discharge of the ballast water,
Wherein the ballast tank is provided with a rotating spiral partition wall extending spirally from the one side of the side of the ballast tank to which the inflow pipe is connected,
The discharge pipe is coupled to one side of a central portion of the ballast tank,
And the ballast water can be discharged in the order in which the ballast water is introduced into the ballast tank. The method according to claim 1,
The discharge pipe
A first discharge pipe projecting from one side of the ballast tank to one side of the rear side of the ship so as to discharge the ballast water from one side of the rear side of the ship,
And a second discharge pipe extending from one side of the ballast tank so as to discharge the ballast water from one side of the ship toward one side of the side of the ship. 2. The ballast water treatment system according to claim 1, And propulsion systems. delete The method according to claim 1,
The axleless motor includes:
A cylindrical stator inserted and fixed in the middle of the discharge pipe and having an inner diameter larger than an inner diameter of the discharge pipe and having a rotating space formed inside thereof with a plurality of winding modules for rotational energy installed therein,
A screw type impeller having a diameter corresponding to an inner diameter of the discharge pipe and a rotor surrounding the screw type impeller and having a plurality of magnetic bodies inserted therein and rotatably inserted into the rotary space, And a ballast water treatment and propulsion system using the axleless motor. 5. The method of claim 4,
The stator comprises:
A first stator piece inserted into the rotor and having an inlet groove for receiving ballast water at a position facing the ballast tank;
And a second stator piece coupled to the first stator frame so that the rotor is not separated from the first stator frame and formed with a discharge groove through which the ballast water having passed through the rotor is discharged. Water treatment and propulsion systems. 6. The method of claim 5,
At a joint portion between the first stator piece and the second stator piece,
At least one fastening groove is formed,
At a portion corresponding to the engaging groove in the second stator piece,
Further, a fastening hole is formed,
Wherein the first stator piece and the second stator piece are engaged with each other by inserting the fastening means into the fastening hole so as to be inserted into the fastening groove so that the first stator piece and the second stator piece are engaged with each other. . 6. The method of claim 5,
At a position corresponding to the surface of the rotor on a surface of the first stator, on which the inflow groove is formed,
The stator includes a stator and a stator. The stator has a stator and a rotor. The stator has a stator and a stator. The stator has a stator, And a floating module is further included. The ballast water treatment and propulsion system using the axleless motor. 8. The method of claim 7,
On the inner surface of the first stator piece facing the rotor,
Wherein a plurality of oblique grooves are formed in a diagonal line with a predetermined distance from each other to facilitate the discharge of the ballast water. 8. The method of claim 7,
The rotor may include:
A first inclined portion inclined from a side of the surface facing the inflow groove toward a central portion where the screw-type impeller is located,
Further comprising a second inclined portion projecting obliquely toward the discharge groove from one side of the surface facing the discharge groove,
At a position facing the first inclined portion of the first stator piece,
And an auxiliary protrusion formed to protrude in a shape corresponding to the first inclined portion,
At a position facing the second inclined portion of the second stator piece,
Further comprising an auxiliary recess formed in a shape corresponding to the second inclined portion,
And the inclined portion of the first inclined portion and the inclined portion accelerates the discharge of the ballast water by the screw type impeller. 6. The method of claim 5,
The second stator part
A fitting cap inserted from a direction in which the screw-type impeller is positioned to surround the discharge groove,
And a second gap between the rotor and the second stator, the gap being formed between the rotor and the second stator, the gap being formed by an elastic material and having a plurality of auxiliary through- And a seating cap which is formed of a bearing portion and a forming portion. The ballast water treatment and propulsion system using the axleless motor.

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