WO2018199708A1 - 전기추진 선박용 수직축 임펠러 날개 추진 장치 - Google Patents
전기추진 선박용 수직축 임펠러 날개 추진 장치 Download PDFInfo
- Publication number
- WO2018199708A1 WO2018199708A1 PCT/KR2018/004998 KR2018004998W WO2018199708A1 WO 2018199708 A1 WO2018199708 A1 WO 2018199708A1 KR 2018004998 W KR2018004998 W KR 2018004998W WO 2018199708 A1 WO2018199708 A1 WO 2018199708A1
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- WIPO (PCT)
- Prior art keywords
- bearing
- impeller
- water flow
- box
- motor box
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
Definitions
- the present invention relates to a vertical axis impeller wing propulsion device for an electric propulsion ship, and more particularly, using an impeller wing having a vertical axis of rotation, the vertical axis impeller wing for an electric propulsion ship to completely isolate the bearing used for the rotation axis from sea water. It relates to a propulsion device.
- the electric propulsion system has excellent adjustment performance by turning in the propulsion direction by the rotation of the propeller itself, and excellent crash stopping ability while maintaining the steering performance.
- it is expected to be established as an essential power system for high-class ships in the future due to its excellent maintainability and reliability.
- propulsion blades still use conventional propeller blades as propulsion blades in electric propulsion ships.Because the bearings used for the rotating shaft do not seal completely from sea water, the bearing lubricant leaks. Is a source of pollution, shortens the life of bearings, and causes seawater to enter the engine room.
- the electric propulsion ship uses the advantage of operating the rotation of the propulsion blade using an electric motor, by using an impeller blade having a vertical axis as the propulsion wing,
- the bearings used for the rotating shaft can be completely isolated from the seawater, thus preventing the contamination of the seawater by the lubricating oil of the bearing, prolonging the life of the bearing, and propelling the ship to prevent the inflow of seawater into the engine room.
- the water flow casing inlet and outlet is formed; At least one impeller motor located on top of the water flow casing; A vertical rotation axis vertically connected to the lower portion of the at least one impeller motor to rotate; An impeller wing attached to an outer circumferential surface of the vertical axis of rotation; A bearing box connected to a lower portion of the vertical axis of rotation and rotating together with the vertical axis of rotation, the bearing box having a bearing space that is a space in which the lower portion is opened; A fixed vertical shaft fixed to the bottom of the water flow casing and inserted into the bearing space of the bearing box through the lower part of the bearing box; And a bearing positioned between the bearing box and the fixed vertical axis, wherein when the impeller motor rotates the rotary vertical axis and the impeller blade, fluid flows into the inlet of the water flow casing and passes through the impeller blade to be discharged to the outlet of the water flow casing, and the bearing By the gas present in the space,
- the ship propulsion device is located under the bearing box, the bearing box gas storage chamber formed around the fixed vertical axis, the bearing box gas space is formed in the upper and lower open space therein; And a gas supply unit supplying gas to the bearing box gas space of the bearing box gas storage chamber, wherein the gas supplied by the gas supply unit blocks the fluid flowing through the lower portion of the bearing box gas storage chamber from reaching the bearing. Can be.
- the marine propulsion device may further include a bearing box packing ring that seals between the bearing box gas reservoir and the fixed vertical shaft to block fluid flowing through the bearing box gas reservoir bottom.
- Marine propulsion apparatus the water inlet and outlet formed water casing; At least one impeller motor located on top of the water flow casing; A vertical rotation axis vertically connected to the lower portion of the at least one impeller motor to rotate; An impeller wing attached to an outer circumferential surface of the vertical axis of rotation; A motor box fixed to an upper portion of the water flow casing so as to surround the impeller motor, and having an impeller motor space formed therein; A motor box bearing located between the inner surface of the motor box and the vertical axis of rotation; And a motor box gas storage chamber located between a lower portion of the motor box and an upper surface of the water flow casing, surrounding the rotational vertical axis, and having a motor box gas space formed therein, the upper and lower openings of which are present in the motor box gas space.
- the gas the fluid flowing through the lower portion of the motor box gas reservoir may be blocked from reaching the motor box bearing.
- the marine propulsion device may further include a motor box packing ring that seals between the motor box gas reservoir and the rotational vertical axis to block the fluid flowing through the motor box gas reservoir.
- the inlet and the outlet are formed, by the rotation of the impeller blades inside, the fluid flows into the inlet and passes through the impeller blades to the outlet of the water flow casing Discharged water casing;
- a steering rotation shaft fixed perpendicularly to the upper portion of the water flow casing;
- a steering motor connected to an upper portion of the steering rotation shaft and rotating the steering rotation shaft;
- a steering motor box which is fixed to the lower part of the ship and in which a steering motor is installed;
- a steering motor box bearing positioned between an inner surface of the steering motor box and a steering shaft;
- a steering motor box gas storage compartment positioned between a lower portion of the steering motor box and an upper surface of the water flow casing, surrounding a steering shaft, and having a steering motor box gas space formed therein, the upper and lower portions of which are open.
- the marine propulsion device may further include a steering motor box packing ring for sealing a fluid flowing through the steering motor box gas storage compartment by sealing between the steering motor box gas storage compartment and the steering rotation shaft.
- the water flow casing inlet and outlet are formed in the front and rear respectively; At least one impeller motor located on top of the water flow casing; A vertical rotation axis vertically connected to the lower portion of the at least one impeller motor to rotate; And an impeller blade attached to an outer circumferential surface of the vertical axis of rotation, wherein when the impeller motor rotates the vertical axis of rotation and the impeller blade, fluid flows into the inlet of the water flow casing and is discharged through the impeller wing to the outlet of the water flow casing, and the water flow casing Silver impeller wing side cover portion on the side of the water flow casing, the impeller wing side cover portion may wrap the impeller wing along the rotational trajectory of the impeller wing in the region in which the impeller wing rotates from the outlet toward the inlet.
- Two impeller motors are positioned at the upper portion of the water flow casing, and the impeller motor may be arranged such that the fluid introduced into the inlet of the water flow casing is discharged to the outlet by passing between the rotational vertical axes.
- the water flow casing may comprise a vortex breaker plate positioned to extend in the direction of the inlet from the inlet between the rotational vertical axes.
- the bearing used for the vertical axis of rotation of the propulsion blade rotated by the electric motor can be completely isolated from the sea water, thereby preventing contamination of sea water by the lubricant of the bearing
- it is possible to increase the life of the bearing to provide a marine propulsion device that can prevent the inflow of seawater into the engine room.
- FIG. 1 is a perspective view of a marine propulsion device according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view from above of a marine propulsion device according to a first embodiment of the present invention.
- FIG 3 is a sectional view seen from the side of the ship propulsion device according to the first embodiment of the present invention.
- FIG. 5 is a sectional view seen from the side of the propulsion device for ships according to the second embodiment of the present invention.
- FIG. 6 is a view showing a state in which a marine propulsion device according to a second embodiment of the present invention is installed on a vessel.
- FIG. 7 is a view showing a first modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- FIG. 8 is a view showing a second modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- FIG. 9 is a view showing a third modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- FIG 10 is a view showing a modification of the bearing and the bearing box packing ring of the ship propulsion device according to the second embodiment of the present invention.
- FIG. 11 is a sectional view seen from above of a marine propulsion device according to a third embodiment of the present invention.
- FIG. 12 is a perspective view of a marine propulsion device according to a third embodiment of the present invention.
- Fig. 13 shows a modification of the water flow casing of the marine propulsion device according to the third embodiment of the present invention.
- one component when one component is referred to as “connected” or “coupled” with another component, the one component may be directly connected to or directly coupled to the other component, It is to be understood that unless there is an opposing substrate, it may be connected or combined via another component in the middle.
- components represented by ' ⁇ ' in the present specification may be divided into two or more components by combining two or more components into one component, or by one or more components.
- each component to be described below may additionally perform some or all of the functions of other components in addition to the main functions of which they are responsible, and some of the main functions of each of the components may be different. Of course, it may be carried out exclusively by the component.
- first,” “second,” “first,” or “second,” as used in various embodiments may modify various elements in any order and / or importance, and the elements may be modified. It is not limited.
- the first component may be referred to as a second component, and similarly, the second component may be renamed to the first component.
- 1 is a perspective view of a marine propulsion device according to a first embodiment of the present invention.
- 2 is a cross-sectional view from above of a marine propulsion device according to a first embodiment of the present invention.
- 3 is a sectional view seen from the side of the ship propulsion device according to the first embodiment of the present invention.
- 4 is a view briefly explaining Boyle's law.
- Marine propulsion device is a water flow casing 10, impeller motor 20, vertical axis of rotation 21, impeller blade 22, bearing box 30, fixed vertical axis 32 and bearing And (37).
- the water flow casing 10 may be formed with the inlet 11 of the fluid on the front, the outlet 12 of the fluid introduced into the inlet 11 on the back.
- the fluid may be a fluid in which the vessel is suspended, and may be, for example, seawater or river water.
- the impeller motor 20 may be located above the water flow casing 10. One or more impeller motors 20 may be installed, and an embodiment in which two impeller motors 20 are installed will be described later.
- the rotating vertical shaft 21 is vertically connected to the lower portion of the impeller motor 20 to rotate, and the impeller blades 22 may be positioned on the outer circumferential surface of the rotating vertical shaft 21.
- the water flow casing 10 may include an impeller wing side cover portion 13 on the side of the water flow casing 10 to further increase the efficiency of the propulsion device.
- the impeller wing side cover portion 13 may have a shape in which the impeller wing 22 is roundly wrapped along the rotational trajectory of the impeller wing 22 in an area where the impeller wing 22 rotates from the outlet toward the inlet.
- the impeller wing side cover portion 13 can minimize the reverse propulsion force generated by the rotation of the impeller blade 22 in the reverse propulsion direction.
- the bearing box 30 may be connected to the lower portion of the rotation vertical shaft 21, may rotate together with the rotation vertical shaft 21, and a bearing space 31 may be formed in the interior of the bearing box 30.
- the fixed vertical shaft 32 may be fixed to the bottom of the water flow casing 10 and may be inserted into the bearing space 31 of the bearing box 30 through the lower portion of the bearing box 30.
- the bearing 47 may be located between the bearing box 30 and the fixed vertical axis 32.
- the fixed vertical shaft 32 is preferably fixed to the bottom of the water flow casing 10 so as to be coaxial with the virtual axis of rotation extension of the rotating vertical shaft 21, the cross-sectional shape of the fixed vertical shaft 32 is as shown in FIG. It may have a 'T' shape.
- Bearing 47 may be connected to the upper surface of the fixed vertical shaft 32 of the 'T' cross-sectional shape and the inner upper surface of the bearing box 30, the thrust bearing is preferred.
- the bearing box to which the law of Boyle is applied in order to prevent the lubricating oil from leaking from the rotating vertical shaft 21 and the bearing 30 which should be submerged in a fluid (hereinafter, seawater will be described as an example) 30) is used.
- the sea water 2 which may flow through the lower portion of the bearing box 30 may be blocked from reaching the bearing 37 by the gas present in the bearing space 31.
- the empty bottle is placed in the water with the lid open, upside down, but vertically, water is not allowed into the empty bottle even though the lid is open.
- the water can only slightly enter the inlet of the bottle at the pressure that the pressure can give to the air in the bottle.
- Boyle's law of pressure and volume of gas if the water pressure is twice the atmospheric pressure, the water will fill half the empty bottle. 1 atm corresponds to a depth of about 10 meters of water.
- the bearing box 30 to which this is applied may have a shape such as an inverted bottle-shaped container, and a cylindrical inlet surrounding the fixed vertical shaft 32 may be formed at a lower portion thereof.
- the seawater 2 does not enter deep into the bearing box 30, but only slightly enters the inlet of the lower portion of the bearing box 30. It will only come in proportion to the pressure of the seawater on the bearing space 31 of the bearing box 30. That is, since the seawater 2 is only slightly introduced into the interior from the lower inlet of the bearing box 30 by the pressure generated in proportion to the depth of the ship submerged in the seawater (2), the bearing 37 and the seawater (2) are mutually You will not be able to contact them.
- the lubricating oil of the bearing 37 does not flow into the seawater 2 inside the water flow casing 10, thereby preventing contamination of the seawater 2 and extending the life of the bearing 37. .
- the large impeller blade 22 suitable for large ships can also be used stably.
- the marine propulsion apparatus may further include a motor box 40, a motor box bearing 47, and a motor box gas storage chamber 43.
- the motor box 40 may be fixed to an upper portion of the water flow casing 10 so as to surround the impeller motor 20, and an impeller motor space 41 may be formed inside the motor box 40. Can be.
- the motor box bearing 47 is positioned between the inner surface of the motor box 40 and the rotation vertical axis 21 to enable rotation of the rotation vertical axis 21, and the motor box bearing 47 is preferably a radial bearing.
- the motor box 40 may have a shape such as an inverted bottle-shaped container, and a cylindrical inlet may be formed at a lower portion of the motor box 40 to surround the rotation vertical axis 21.
- a cylindrical inlet may be formed at a lower portion of the motor box 40 to surround the rotation vertical axis 21.
- FIG. 5 is a sectional view seen from the side of the propulsion device for ships according to the second embodiment of the present invention.
- the marine propulsion device according to the second embodiment of the present invention is a configuration in which a gas storage chamber is further added to the marine propulsion device according to the first embodiment of the present invention. Therefore, components having the same functions as those described in the first embodiment are shown with the same reference numerals, and redundant description thereof will be omitted.
- the marine propulsion device may further include a bearing box gas storage chamber 33, a gas supply part 35, and a bearing box packing ring 36.
- the bearing box gas storage chamber 33 may be positioned below the bearing box 30, may surround the fixed vertical shaft 32, and have a bearing box gas space 34 that is an open top and bottom space therein.
- the gas supply part 35 may supply gas to the bearing box gas space 34 of the bearing box gas storage chamber 33.
- the gas present in the bearing box gas storage chamber 33 or the gas supplied by the gas supply unit 35 the seawater 2 flowing through the lower portion of the bearing box gas storage chamber 33 reaches the bearing 37. Can be blocked.
- the gas supply part 35 can supply an inert gas, such as helium gas.
- an inert gas such as helium gas.
- the bearing box gas reservoir 33 may be added for the case where it is difficult to block the inflow of the seawater 2 by the bearing box 30 alone (for example, when the hydraulic pressure is large).
- the pressure of the seawater 2 applied to the inside of the bearing box 30 is very high, so that the seawater 2 enters the point where the bearing 37 is installed. May occur.
- a bearing box gas storage compartment 33 may be installed at a lower portion of the bearing box 30, and the bearing box gas space 34 may be smaller than the volume of the bearing space 31. It is desirable to set the state several times larger.
- the pressure of the seawater 2 applied to the bearing space 31 is 10 times the atmospheric pressure, that is, the depth of the water. If the water pressure is not as high as 100 meters, the sea water 2 cannot enter the point where the bearing 37 is installed.
- the pressure of the seawater 2 on the bearing box gas space 34 is already at the bearing box gas. Since the calculation is possible before installation of the storage compartment 33, the size and pressure of the bearing box gas storage compartment 33 can be sufficiently calculated and set before the installation of the propulsion apparatus according to the present embodiment.
- the bearing box packing ring 36 may seal between the bearing box gas reservoir 33 and the fixed vertical shaft 32 to block the seawater 2 flowing through the bearing box gas reservoir 33 underneath.
- the bearing box packing ring 36 may be pressurized by the gas supplied to the bearing box gas space 34, so that the sea water 2 flowing through the lower portion of the bearing box gas storage chamber 33 is loaded into the bearing box packing ring. Flow 36 may be blocked by 36 to block reaching the bearing 37.
- the marine propulsion apparatus may further include a motor box gas storage chamber 43, a gas supply part (not shown), and a motor box packing ring 46.
- the motor box gas storage chamber 43 is configured to perform the same function as the bearing box gas storage chamber 33.
- the motor box gas storage chamber 43 may be located between the lower portion of the motor box 40 and the upper surface of the water flow casing 10, and the rotation vertical shaft 21 may be disposed.
- the motor box gas space 44 which is a space in which the upper and lower portions are opened, may be formed therein.
- the gas supply unit may supply gas to the motor box gas space 44 of the motor box gas storage chamber 43.
- the gas supply unit can supply an inert gas such as helium gas. When the inert gas is filled in the motor box gas storage chamber 43, it is possible to prevent the bearing and the metals inside from being oxidized.
- the sea water 2 which can flow through the lower portion of the motor box gas storage chamber 43 through the space between the water flow casing 10 and the vertical axis of rotation 21 is Reaching the motor box bearing 47 can be blocked by the gas present in the motor box gas space 44 or by the gas supplied by the gas supply. Accordingly, the lubricating oil of the motor box bearing 47 may not flow into the sea water 2 in the water flow casing 10, and the life of the motor box bearing 47 may be extended.
- the motor box packing ring 46 may seal between the motor box gas storage chamber 43 and the rotation vertical shaft 21 to block seawater 2 flowing through the lower portion of the motor box gas storage chamber 43.
- the motor box packing ring 46 may be pressurized by the gas supplied to the motor box gas space 44, so that the sea water 2 introduced through the lower portion of the motor box gas storage chamber 43 is filled with the motor box packing ring. Flow may be blocked by 46 to block motor box bearing 47 from reaching.
- the ship can be swiveled in the propulsion direction by the rotation of the propulsion device itself, so the ship's adjustment performance is excellent.
- the steering motor 60 performing the steering function may be installed at the stern of the vessel (1).
- the lubricating oil of the steering motor box bearing 57 used for the steering shaft 51 also needs to be designed so as not to leak into the sea water 2.
- Steering motor 60, steering shaft 51 and steering motor box bearing 57 is completely helped to the safety of the vessel (1) to make it completely shielded from the sea water (2).
- the marine propulsion device according to the second embodiment of the present invention is a steering shaft 51, steering motor 60, steering motor box 50, steering motor box bearing 57 and steering motor.
- the box gas reservoir 53 may be included.
- the steering shaft 51 may be vertically fixed to the upper portion of the water flow casing 10.
- the motor box 40 When the motor box 40 is formed on the upper portion of the water flow casing 10, the motor box 40 may be vertically fixed to the upper surface of the motor box 40.
- the steering motor 60 is connected to an upper portion of the steering rotation shaft 51 and may rotate the steering rotation shaft 51. By the operation of the steering motor 60, the water flow casing 10 itself is rotated, the ship 1 can be rotated by this rotation.
- the steering motor box 50 is fixed to the lower portion of the ship 1, the steering motor 60 may be installed therein.
- a steering motor space 52 which is a space in which the lower part is opened, may be formed.
- the steering motor box bearing 57 is located between the inner surface of the steering motor box 50 and the steering rotation shaft 51 to enable rotation of the steering rotation shaft 51, and the steering motor box bearing 57.
- Silver radial bearings are preferred.
- the steering motor box 50 may have a shape such as an inverted bottle-shaped container, and a cylindrical inlet may be formed at a lower portion thereof to surround the steering shaft 51.
- a cylindrical inlet may be formed at a lower portion thereof to surround the steering shaft 51.
- the steering motor box 50 of the steering motor box 50 passes through the space between the water flow casing 10 and the steering rotation shaft 51.
- the sea water 2 which may flow through the lower part may be blocked from reaching the steering motor box bearing 57 by the gas present in the steering motor space 52. Accordingly, the lubricating oil of the steering motor box bearing 57 may not flow into the sea water 2 under the steering motor box 50, and the life of the steering motor box bearing 57 may be extended. Will be.
- a steering motor box gas storage chamber 53 and a gas supply unit may be further installed at the lower portion of the steering motor box 50 to more completely prevent seawater penetration.
- the steering motor box gas storage chamber 53 performs the same function as the bearing box gas storage chamber 33, and the steering motor box gas storage chamber 53 has a lower portion of the steering motor box 50 and a water flow casing 10.
- the steering motor box gas space 54 may be formed between the upper surfaces and surrounds the steering rotation shaft 51 and has an open upper and lower portions therein.
- the gas supply unit may supply gas to the steering motor box gas space 54 of the steering motor box gas storage chamber 53.
- the gas supply unit can supply an inert gas such as helium gas. When the inert gas is filled in the steering motor box gas storage chamber 53, it is possible to prevent the bearing and the metals inside from being oxidized.
- the sea water that can flow through the lower portion of the steering motor box gas storage chamber 53 through the space between the water flow casing 10 and the steering shaft (51) ( 2) may be blocked from reaching the steering motor box bearing 57 by the gas present in the steering motor box gas space 54 or by the gas supplied by the gas supply unit. Accordingly, the lubricating oil of the steering motor box bearing 57 may not flow into the sea water 2 under the steering motor box 50, and the life of the steering motor box bearing 57 may be extended. Will be.
- the steering motor box packing ring 56 may seal between the steering motor box gas storage chamber 53 and the steering rotation shaft 51 to block the fluid flowing through the steering motor box gas storage chamber 53 underneath.
- the steering motor box packing ring 56 may be pressurized by the gas supplied to the steering motor box gas space 54, and thus, the seawater 2 introduced through the lower portion of the steering motor box gas storage chamber 53 may be pressurized. ) May be blocked by the steering motor box packing ring 56 so that reaching the steering motor box bearing 57 may be blocked.
- the propulsion device of the present embodiment since the steering motor box 50 is capable of steering even if completely attached to the stern portion of the vessel 1, it is possible to increase the safety of the vessel.
- FIG. 7 is a view showing a first modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- 8 is a view showing a second modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- 9 is a view showing a third modification of the bearing of the marine propulsion device according to the second embodiment of the present invention.
- the bearing 37 may use thrust bearings and radial bearings in various arrangements in order to enhance and stabilize the function of the bearings, depending on the characteristics of the ship's expertise and size.
- a cylindrical rotary protrusion 38 is formed from the center of the inner upper surface of the bearing box 30 and extends upwardly from the outer portion of the disc-shaped plate 32a of the fixed vertical shaft 32 having a 'T' cross-sectional shape.
- An annular fixing protrusion 39 can be formed.
- a radial bearing 37a may be installed between the outer circumferential surface of the cylindrical rotating protrusion 38 and the annular fixed protrusion 39.
- a thrust bearing 37b may be installed between the lower surface of the cylindrical rotating protrusion 38 and the upper surface of the disc-shaped plate 32a of the fixed vertical shaft 32.
- the first disc-shaped plate 32b and the second disc-shaped plate 32c spaced vertically apart from each other may be formed on the fixed vertical axis 32.
- a thrust bearing 37c may be installed between the inner upper surface of the bearing box 30 and the upper surface of the first disc-shaped plate 32b.
- a radial bearing 37d may be installed between the outer circumferential surface of the fixed vertical shaft 32 between the first disc-shaped plate 32b and the second disc-shaped plate 32c and the inner circumferential surface of the bearing box 30.
- the fixed vertical axis 32 may not have a 'T' cross-sectional shape, but may have a cylindrical shape.
- the fixed vertical axis 32 is connected to a first fixed vertical axis 32a having a predetermined diameter and a lower surface of the first fixed vertical axis 32a, and has a second fixed vertical axis 32 having a diameter larger than the diameter of the first fixed vertical axis 32a ( 32b).
- a thrust bearing 37e may be installed between the inner upper surface of the bearing box 30 and the upper surface of the second fixed vertical shaft 32b.
- the fixed vertical axis of this shape may be easier to assemble and disassemble than the fixed vertical axis having a 'T' cross-sectional shape.
- FIG 10 is a view showing a modification of the bearing and the bearing box packing ring of the ship propulsion device according to the second embodiment of the present invention.
- the fixed vertical axis 32 may not have a 'T' cross-sectional shape, but may have a cylindrical shape.
- the fixed vertical shaft 32 is connected to a first fixed vertical shaft 32c having a predetermined diameter and a lower surface of the first fixed vertical shaft 32c and has a second fixed vertical shaft having a diameter larger than the diameter of the first fixed vertical shaft 32c ( 32d) and a third fixed vertical axis 32e connected to the bottom surface of the second fixed vertical axis 32d and having a diameter larger than the diameter of the second fixed vertical axis 32d.
- a thrust bearing 37f may be installed between the inner upper surface of the bearing box 30 and the upper surface of the second fixed vertical shaft 32d.
- the fixed vertical axis of this shape may be easier to assemble and disassemble than the fixed vertical axis having a 'T' cross-sectional shape.
- An annular plate 30a may be formed on the inner circumferential surface of the bearing box 30, and the bearing box packing ring 36a is positioned on an upper surface of the third fixed vertical shaft 32e and an upper surface of the annular plate 30a, and a bearing box.
- a thrust bearing 37g may be located between the packing ring 36a and the top surface of the third fixed vertical shaft 32e and between the bearing box packing ring 36a and the top surface of the annular plate 30a.
- the bearing box packing ring 36a can be reduced in wear due to the thrust bearing 37g.
- an additional bearing box gas space 34a may be formed to block the thrust bearing 37g from contacting the sea water.
- 11 is a sectional view seen from above of a marine propulsion device according to a third embodiment of the present invention.
- 12 is a perspective view of a marine propulsion device according to a third embodiment of the present invention.
- Marine propulsion device may include a water flow casing 110 and the vortex prevention plate 115 is installed two impeller motors.
- components having the same functions as those described in the first and second embodiments are shown with the same reference numerals, and redundant description thereof will be omitted.
- the present embodiment can be equally applied to the rotating structure described in the first and second embodiments and the fluid penetration preventing structure for the bearing.
- Impeller motors are positioned at the upper portion of the water flow casing 110, and as shown in FIG. 11, fluid introduced into the inlet 111 of the water flow casing 110 passes between the rotation vertical axes 121. Impeller motors may be arranged to discharge to the outlet 112. When the impeller motors are arranged side by side to rotate the symmetrical shape can effectively center the propulsion.
- the water flow casing 110 includes impeller wing side cover portions 113 on both sides of the water flow casing 110. can do.
- the impeller wing side cover portion 113 has a shape in which the impeller wing 122 is roundly wrapped around the impeller wing 122 along the rotational trajectory of the impeller wing 122 in an area where the impeller wing 122 rotates from the outlet 112 toward the inlet 111.
- Can have The impeller wing side cover portion 113 may minimize the reverse thrust force generated by the rotation of the impeller wing 122 in the reverse propulsion direction.
- the inflow area of the inflow port 111 is preferably increased gradually toward the front of the water flow casing 110.
- the discharge area of the outlet 112 is gradually reduced toward the rear of the water flow casing 110, so that the same effect can be obtained without increasing the rotational speed of the impeller blade 122.
- the vortex prevention plate 115 may be installed along an imaginary center line of the inlet 111 and the outlet 112 of the water flow casing 110.
- the anti-vortex plate 115 may extend from the inlet 11 to the outlet 12 over the entire length of the water flow casing 10 and may extend only for some lengths.
- the motor box 140 in which the impeller motor is accommodated may be located side by side.
- Fig. 13 shows a modification of the water flow casing of the marine propulsion device according to the third embodiment of the present invention.
- One motor box 240 in which two impeller motors are accommodated may be formed at an upper portion of the water flow casing 210.
- vertical steering blades 225 may be formed in the inlet 211 toward the outlet 212 at the top and / or bottom of the water flow casing 210. As illustrated in FIG. 13, the vertical steering blade 225 may smoothly connect with the curved surface of the impeller wing side cover portion 213 protruding round from both sides of the water flow casing 210 and may extend toward the outlet 212. .
- a steering rotary shaft 251 that performs the same function as the steering rotary shaft 51 described in the first and second embodiments may be fixed to the upper portion of the water flow casing 210 or the motor box 240, and the steering may be fixed.
- the steering shaft 251 may be rotatably connected to a steering motor box 250 that performs the same function as the steering motor box 50 described in the first and second embodiments.
- the propulsion device for ship is an electric propulsion ship device having a vertical axis impeller wing, it is possible to completely block the contact between the bearing and the seawater generated in the rotation axis of the propulsion device and the rotation axis of the steering device Therefore, the leakage of bearing lubricant can be completely blocked.
- oil and lubricating oils can be prevented from contaminating the ocean, which will contribute to the protection of the marine environment.
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- Combustion & Propulsion (AREA)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
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Claims (10)
- 유입구와 배출구가 형성된 수류 케이싱;수류 케이싱의 상부에 위치한 적어도 하나의 임펠러 모터;상기 적어도 하나의 임펠러 모터의 하부에 수직으로 연결되어 회전되는 회전 수직축;회전 수직축의 외주면에 부착된 임펠러 날개;회전 수직축의 하부에 연결되어, 회전 수직축과 함께 회전하고, 내부에 하부가 개방된 공간인 베어링 공간이 형성된 베어링 박스;수류 케이싱의 바닥에 고정되며, 베어링 박스의 하부를 통해 베어링 박스의 베어링 공간에 삽입되는 고정 수직축; 및베어링 박스와 고정 수직축 사이에 위치되는 베어링을 포함하되, 임펠러 모터가 회전 수직축 및 임펠러 날개를 회전시키면, 유체가 수류 케이싱의 유입구로 유입되어 임펠러 날개를 통과하여 수류 케이싱의 배출구로 배출되며,베어링 공간에 존재하는 가스에 의해, 베어링 박스의 하부를 통해 유입되는 유체가 베어링에 도달되는 것이 차단되는 것을 특징으로 하는 선박용 추진 장치.
- 제 1 항에 있어서, 선박용 추진 장치는베어링 박스 하부에 위치되며, 고정 수직축을 둘러싸고, 내부에 상부와 하부가 개방된 공간인 베어링 박스 가스 공간이 형성된 베어링 박스 가스 저장실; 및베어링 박스 가스 저장실의 베어링 박스 가스 공간에 가스를 공급하는 가스 공급부를 더 포함하되,가스 공급부에 의해 공급된 가스에 의해, 베어링 박스 가스 저장실의 하부를 통해 유입되는 유체가 베어링에 도달되는 것이 차단되는 것을 특징으로 하는 선박용 추진 장치.
- 제 2 항에 있어서, 선박용 추진 장치는베어링 박스 가스 저장실과 고정 수직축 사이를 밀봉하여 베어링 박스 가스 저장실 하부를 통해 유입되는 유체를 차단하는 베어링 박스 패킹 링을 더 포함하는 것을 특징으로 하는 선박용 추진 장치.
- 유입구와 배출구가 형성된 수류 케이싱;수류 케이싱의 상부에 위치한 적어도 하나의 임펠러 모터;상기 적어도 하나의 임펠러 모터의 하부에 수직으로 연결되어 회전되는 회전 수직축;회전 수직축의 외주면에 부착된 임펠러 날개;임펠러 모터를 둘러싸도록 수류 케이싱의 상부에 고정되며, 내부에 하부가 개방된 공간인 임펠러 모터 공간이 형성된 모터 박스;모터 박스의 내면과 회전 수직축 사이에 위치한 모터 박스 베어링; 및모터 박스의 하부와 수류 케이싱 상면 사이에 위치하며, 회전 수직축을 둘러싸고, 내부에 상부와 하부가 개방된 공간인 모터 박스 가스 공간이 형성된 모터 박스 가스 저장실을 포함하되,모터 박스 가스 공간에 존재하는 가스에 의해, 모터 박스 가스 저장실의 하부를 통해 유입되는 유체가 모터 박스 베어링에 도달되는 것이 차단되는 것을 특징으로 하는 선박용 추진 장치.
- 제 4 항에 있어서, 선박용 추진 장치는모터 박스 가스 저장실과 회전 수직축 사이를 밀봉하여 모터 박스 가스 저장실 하부를 통해 유입되는 유체를 차단하는 모터 박스 패킹 링을 더 포함하는 것을 특징으로 하는 선박용 추진 장치.
- 유입구와 배출구가 형성되고, 내부의 임펠러 날개의 회전에 의해, 유체가 유입구로 유입되어 임펠러 날개를 통과하여 수류 케이싱의 배출구로 배출되는 수류 케이싱;수류 케이싱의 상부에 수직으로 고정되는 조향용 회전축;조향용 회전축의 상부에 연결되고, 조향용 회전축을 회전시키는 조향용 모터;선박의 하부에 고정되며, 조향용 모터가 내부에 설치되는 조향용 모터 박스;조향용 모터 박스의 내면과 조향용 회전축 사이에 위치한 조향용 모터 박스 베어링; 및조향용 모터 박스의 하부와 수류 케이싱 상면 사이에 위치하며, 조향용 회전축을 둘러싸고, 내부에 상부와 하부가 개방된 공간인 조향용 모터 박스 가스 공간이 형성된 조향용 모터 박스 가스 저장실을 포함하되,조향용 모터 박스 가스 공간에 존재하는 가스에 의해, 조향용 모터 박스 가스 저장실의 하부를 통해 유입되는 유체가 조향용 모터 박스 베어링에 도달되는 것이 차단되는 것을 특징으로 하는 선박용 추진 장치.
- 제 6 항에 있어서, 선박용 추진 장치는조향용 모터 박스 가스 저장실과 조향용 회전축 사이를 밀봉하여 조향용 모터 박스 가스 저장실 하부를 통해 유입되는 유체를 차단하는 조향용 모터 박스 패킹 링을 더 포함하는 것을 특징으로 하는 선박용 추진 장치.
- 전면과 후면에 각각 유입구와 배출구가 형성된 수류 케이싱;수류 케이싱의 상부에 위치한 적어도 하나의 임펠러 모터;상기 적어도 하나의 임펠러 모터의 하부에 수직으로 연결되어 회전되는 회전 수직축; 및회전 수직축의 외주면에 부착된 임펠러 날개를 포함하되,임펠러 모터가 회전 수직축 및 임펠러 날개를 회전시키면, 유체가 수류 케이싱의 유입구로 유입되어 임펠러 날개를 통과하여 수류 케이싱의 배출구로 배출되며,수류 케이싱은 수류 케이싱의 측면에 임펠러 날개 측면 커버부를 포함하되,임펠러 날개 측면 커버부는, 임펠러 날개가 배출구로부터 유입구를 향해 회전하는 영역을 임펠러 날개의 회전 궤도를 따라 임펠러 날개를 감싸는 것을 특징으로 하는 선박용 추진 장치.
- 제 8 항에 있어서,임펠러 모터는 수류 케이싱의 상부에 두 개가 위치되되,수류 케이싱의 유입구로 유입된 유체가, 회전 수직축들의 사이를 통과하여 배출구로 배출되도록 임펠러 모터가 배열된 것을 특징으로 하는 선박용 추진 장치.
- 제 9 항에 있어서,수류 케이싱은 회전 수직축들 사이에 유입구로부터 배출구 방향으로 연장되도록 위치하는 와류 방지 플레이트를 포함하는 것을 특징으로 하는 선박용 추진 장치.
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