KR100726291B1 - Silent and Anti-vibration underwater driving system - Google Patents

Abstract

The present invention relates to an electromagnetic noiseless vibration-free underwater propulsion system, comprising: a casing having a cylindrical hollow and having an electromagnet mounted along the hollow circumference; And a rotor ring having a permanent magnet that interacts with the electromagnet mounted along an outer circumference, and a propulsion wing rotating along a line that connects the center of the cylinder bottom and the center of the top surface as a rotation axis. Including, the rotor ring and the electromagnet is equipped with a permanent magnet and a propulsion wing is provided in an electronic noiseless vibration-free underwater propulsion system, characterized in that arranged in multiple stages in the direction of the axis of rotation of the propulsion wing.

According to the present invention, while maximizing the propulsion force can reduce vibration and noise, reduce the occurrence rate of the failure of the propulsion wing, it is possible to further use the space inside the ship, it is possible to completely waterproof at high pressure, the overall propulsion system is simplified It has the advantage of being.

Electromagnet, permanent magnet, rotor ring, propulsion wing, guide roller

Description

Electronic noiseless vibration free propulsion system {Silent and Anti-vibration underwater driving system}

1 is a side view showing a vessel equipped with a conventional propulsion system.

FIG. 2 illustrates the flow of fluid by the underwater propulsion system shown in FIG. 1.

Figure 3 is a side view showing a vessel equipped with an embodiment of a noiseless vibration-free underwater propulsion system according to the present invention.

4 is a side view showing the embodiment shown in FIG.

5 is a cross-sectional view taken along the line A-A 'in the embodiment shown in FIG.

6A to 6D are cross-sectional views illustrating an operation process of the embodiment shown in FIG. 3.

Figure 7 is a cross-sectional view showing a second embodiment of the noiseless vibration-free underwater propulsion system according to the present invention.

<Description of the symbols for the main parts of the drawings>

208, 308: casing 210, 310: electromagnet

212, 312: propulsion wing 214, 314: rotor ring

216, 316: permanent magnets 218, 318: guide roller

The present invention relates to an electromagnetic noiseless vibration-free underwater propulsion system, and more particularly, to a propulsion system for propelling a ship or submarine by rotating a propulsion wing by the interaction of an electromagnet and a permanent magnet.

In modern society, ships are used for various purposes such as travel, cargo transportation, national defense, etc. The ships are equipped with a propulsion system for generating propulsion. Since the basic role of the propulsion system is the propulsion of the ship, the propulsion force must be high. However, even in a high propulsion system with high propulsion, if vibration and noise are severe, it is difficult for passenger ships to travel comfortably, and military ships are likely to be exposed to the enemy, and in the case of liquefied natural gas transport ships, the vibration It can be an irritant to liquefied natural gas, which is very sensitive to this external environment. Therefore, the introduction of a propulsion system with high propulsion force and low vibration and noise is required.

1 is a side view showing a vessel equipped with a conventional propulsion system.

The engine 102 and the reducer 104 are located inside the engine room of the vessel 100. The reduction gear 104 is connected to the screw 108 through the propulsion shaft 106, the rudder 110, which is a steering device of the ship is located on the stern direction side of the screw 108.

The engine 102 may be a two-stroke diesel engine or a four-stroke diesel engine, etc., but the two-stroke diesel engine has a high vibration and noise, and because of its structure, a four-stroke diesel engine is mainly used. .

The reducer 104 reduces the rotation speed of the propulsion shaft 106. The four-stroke diesel engine rotates the propulsion shaft 106 at a higher speed than the two-stroke diesel engine, and in this case, a problem occurs in that a large load is applied to the propulsion shaft 106 and the screw 108. ) Appropriately reduces the rotation speed of the propulsion shaft 106.

However, in the conventional underwater propulsion system as described above, since the power transmission to the screw 108 is made through the reducer 104 and the propulsion shaft 106, the vibration and noise by the reducer 104 and the propulsion shaft 106 are very high. Severe. Therefore, a military ship has a problem that can be easily found to the enemy, and in the case of a passenger ship, passengers are exposed to vibration and noise, making it difficult to guarantee a pleasant travel environment.

In addition, since the propulsion shaft 106 penetrates the hull, a waterproof member is additionally consumed to prevent the inflow of seawater into the hull.

According to the underwater propulsion system, power is transmitted to the screw 108 via the speed reducer 104 and the propulsion shaft 106, in which case the large force generated by the speed reducer 104, the propulsion shaft 106 and the screw 108 is generated. Due to the moment of inertia, there is a problem that it is difficult to switch the output quickly.

FIG. 2 illustrates the flow of fluid by the underwater propulsion system shown in FIG. 1.

As can be seen in FIG. 2, according to the conventional underwater propulsion system, the fluid rotating by the screw 108 has a property of escaping to the outside about the screw 108 rotating shaft under the influence of centrifugal force. Therefore, there is a problem that the fluid is dispersed, the straightness and concentration of the driving force is lowered.

When arranging the screw 108 in multiple stages in order to increase the propulsive force of the propulsion system, the structure is very complicated, and the blade of the screw 108 is not moved without arranging the screw 108 in multiple stages. In the case of making it larger, there is a problem that the stress applied to the unit area of the blade increases, which increases the possibility of breakage of the blade.

The present invention is to solve the above problems, it is a technical problem to provide a multi-stage arrangement of the screw is possible to provide an underwater propulsion system with a very high propulsion force, but very low vibration and noise.

The present invention is a cylindrical hollow is formed in order to solve the above technical problems, the casing is equipped with an electromagnet along the circumference of the hollow; And a rotor ring having a permanent magnet that interacts with the electromagnet mounted along an outer circumference, and a propulsion wing rotating along a line that connects the center of the cylinder bottom and the center of the top surface as a rotation axis. Including, the rotor ring and the electromagnet is equipped with a permanent magnet and a propulsion wing is provided in an electronic noiseless vibration-free underwater propulsion system, characterized in that arranged in multiple stages in the direction of the axis of rotation of the propulsion wing. At this time, the electromagnet is uniformly mounted in multiples of three, and the permanent magnet may be mounted alternately with the N pole and the S pole. In addition, the thrust of the ship can be very high by the propulsion wings arranged in multiple stages.

Preferably, the rotor ring may be equipped with a guide roller along the circumference. The guide roller allows the rotor ring to rotate smoothly about the axis of rotation of the propulsion wing.

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Preferably, the induced current generated in the electromagnet by the access of the permanent magnet may be fed back to the operation controller for controlling the current supplied to the electromagnet. The induced current fed back to the motion controller eventually controls the rotational speed of the propulsion vane.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 3 is a side view showing a vessel equipped with an embodiment of a noiseless vibration-free underwater propulsion system according to the present invention.

The vessel is powered by an engine 200, a generator 202 for generating electricity to be supplied to the vessel by receiving power from the engine 200, a noiseless vibration-free underwater propulsion system for generating propulsion by receiving electricity from the generator 202 ( 204, the rudder 206 for controlling the direction of travel of the vessel. Hereinafter, the noiseless vibration-free underwater propulsion system according to the present invention will be described in detail.

4 is a side view illustrating the embodiment shown in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line A-A 'in the embodiment shown in FIG. 4.

This embodiment 204 includes a casing 208. A cylindrical hollow is formed in the casing 208. The hollow inner circumferential surface has grooves uniformly formed in multiples of three along the circumference, and an electromagnet 210 is located inside the groove. The electromagnet groups, which are uniformly located in multiples of three, are arranged in four stages in the direction of the axis of rotation of the propulsion wing 212.

The rotor ring 214 is inserted into the groove formed in the inner circumferential surface of the casing 208. On the outer circumferential surface of the rotor ring 214, a permanent magnet 216 is uniformly located in multiples of two along the circumference, and the permanent magnet 216 is alternately located between the north pole and the south pole. The inner circumferential surface of the rotor ring 214 is formed with the same number of protrusions along the circumference of the number of the propulsion wing 212, the protrusion is inserted in the direction of the rotation axis at the blade end of the propulsion wing 212. . Thus, when the rotor ring 214 rotates, the propulsion wing 212 also rotates.

Four pairs of guide rollers 218 are mounted on both sides of the rotor ring 214 at regular intervals along the circumference of the rotor ring 214. The guide roller 218 allows the rotor ring to rotate smoothly about the rotation axis.

In this embodiment, the propulsion shaft is not connected to the propulsion wing 212. Therefore, when a current is supplied to the electromagnet 210, the rotor ring 214 is supported in the air by the attraction force of the electromagnet 210 and the permanent magnet 216, the electromagnet 210 If no current is supplied to the rotor ring 214 is supported by the casing 208.

Hereinafter, an operation process of the present embodiment including the above components will be described.

6A to 6D are cross-sectional views illustrating an operation process of the embodiment shown in FIG. 3.

6A to 6D, the identification numbers of E01, E02, and E03 were repeatedly assigned to the electromagnet 210, while the identification numbers of M01 and M02 were repeated to the permanent magnet 216 in the counterclockwise direction. Was given. M01 corresponds to the north pole and M02 corresponds to the south pole.

As can be seen in FIG. 6A, when a positive current is first applied to the E01 group to maintain the S pole, the E01 group is coincided with the permanent magnet M01 (N pole) of the rotor ring 214 and is fixed at 0 °.

Then, in the first step, when the current is removed from the electromagnet E01 group and a negative current flows through the E02 group to generate the N pole, an attraction force with M02 (S pole) is generated. As shown in FIG. 6B, the rotor ring 214 is generated. ) Rotates clockwise 7.5 °.

In the second step, when the current is removed from the electromagnet E02 group and a positive current flows to the E03 group to generate the S pole, an attraction force with M01 (N pole) of the rotor ring 214 is generated. The ring 214 is rotated 7.5 ° clockwise to rotate a total of 15 °.

In the third step, when the current is removed from the electromagnet E03 group and a negative current flows to the E01 group to generate the N pole, an attraction force with M02 (S pole) is generated, and the rotor ring 214 is clocked as shown in FIG. 6D. A total of 22.5 ° is rotated by 7.5 ° in the direction.

The rotation of the propulsion wing 212 is made through the above-described process. If one permanent magnet is defined as one cycle, starting from group E01 and again meeting with electromagnets of group E01, the electromagnets are arranged in multiples of three and the permanent magnets are arranged in multiples of two, so a total of six steps of movement are formed in one cycle. The repetitive action of this cycle produces the overall rotational motion.

Table 1 below shows the control situation of the electromagnet between steps when the rotor ring 214 is rotated 360 ° clockwise.

In this embodiment, the rotor ring 214 is rotated by the attraction force between the electromagnet and the permanent magnet to which the electric current is supplied to only one group of electromagnets, but in another embodiment, located immediately after the electromagnet group to which the electric current is supplied. The current can be supplied to the electromagnet group so that the opposite polarity is formed. In this case, an attractive force is generated between the permanent magnet and the electromagnet positioned in front of it, and a repulsive force is generated with the electromagnet positioned behind the permanent magnet, thereby obtaining a more powerful rotational force.

When the present embodiment is operated by the above process, the induced current is generated by the proximity effect of the permanent magnet to the electromagnet that is not supplied with power in each step. That is, during operation of the present embodiment, the permanent magnet 216 installed in the rotor ring 214 approaches an electromagnet in which current does not flow repeatedly while crossing the polarity, so that the electromagnet 210 has different directions and intensities, respectively. Induced current is generated. When the induction current is measured, the actual rotation state of the rotor ring 214 may be confirmed in real time, and the data may be fed back to the operation controller for controlling the current supplied to the electromagnet and used as a reference for control.

Table 2 shows the variation of the induced current of each group of electromagnets up to 180 °, with the vertical axis representing the current variation and direction, and the horizontal axis representing the displacement (angle) of the rotor.

According to this embodiment, the propulsion wing can be arranged in multiple stages to maximize propulsion, and the load applied to one propeller blade can be reduced to reduce the failure rate of the propeller blade. In addition, the rotational direction and the rotational speed of the propulsion blades can be adjusted for each propeller blade, which is advantageous for emergency maneuvering even when some propulsion blades do not operate. In addition, since the direction of the screw blades is toward the center of the rotation axis of the blade, the fluid flowing into the propulsion wing is guided by the wing surface and the inside of the casing, so that the fluid flowing out of the casing does not diffuse, so the straightness and concentration of the driving force is outstanding.

According to this embodiment, the propulsion shaft and the speed reducer are unnecessary, the overall propulsion system is simplified, the noise and vibration generated from the propulsion shaft and the speed reducer are eliminated, and further utilization of the space inside the ship occupied by the propulsion shaft and the speed reducer is possible. In addition, since there is no propulsion shaft protruding from the inside of the hull to the outside, it is possible to achieve a perfect waterproof even at high pressure.

Second Embodiment

Figure 7 is a cross-sectional view showing a second embodiment of the noiseless vibration-free underwater propulsion system according to the present invention.

Hereinafter, this embodiment includes a casing 308, an electromagnet 310, a propulsion wing 312, a rotor ring 314, a permanent magnet 316 and a guide roller 318, which is the first embodiment Same as the component it contains. Since the present embodiment differs from the first embodiment in terms of the arrangement of the components, the arrangement of the components included in the present embodiment will be described below.

The outer circumferential surface of the rotor ring 314 of this embodiment has a trapezoidal shape. The electromagnet 310 is located outside the trapezoid both hypotenuse, the permanent magnet 316 is located inside the trapezoid both hypotenuse, guide rollers 318 are located on both sides of the trapezoid top and bottom.

According to the present invention, while maximizing the propulsion force can reduce vibration and noise, reduce the occurrence rate of the failure of the propulsion wing, it is possible to further use the space inside the ship, it is possible to completely waterproof at high pressure, the overall propulsion system is simplified It has the advantage of being.

Claims (5)

A casing in which a cylindrical hollow is formed and in which an electromagnet is mounted along the circumference of the hollow; And Rotor ring is mounted along the outer periphery is a permanent magnet that interacts with the electromagnet, the propulsion wing is rotated along the inner circumference is rotated by a line connecting the center of the cylindrical bottom and the center of the upper surface as a rotation axis; But And the rotor ring and the electromagnet equipped with a permanent magnet and a propulsion vane are arranged in multiple stages in the direction of a rotation axis of the propulsion vane. The method of claim 1, The rotor ring electronic noiseless vibration free propulsion system, characterized in that the guide roller is mounted along the circumference. The method according to claim 1 or 2, And the electromagnet is uniformly mounted in multiples of three, and the permanent magnet is mounted alternately with the N pole and the S pole. delete The method according to claim 1 or 2, Electromagnetic noiseless vibration-free underwater propulsion system, characterized in that the induced current generated in the electromagnet by the approach of the permanent magnet is fed back to the operation controller for controlling the current supplied to the electromagnet.

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