JP2019080022A - Turret mooring system capable of wireless power transmission - Google Patents

Abstract

To supply power to a rotating body wirelessly by using a magnetic resonance method.SOLUTION: A stopper portion includes a housing portion installed in a base portion to form a first internal space, a first insertion portion movably installed in the first internal space so as to be inserted into an insertion hole by hydraulic pressure, a first elastic portion provided made of an elastic material so as to be installed at the end of the first insertion portion, a second insertion portion movably installed in a second internal space formed in the first insertion portion so as to be inserted into an auxiliary insertion hole by hydraulic pressure, and a second elastic portion made of an elastic material so as to be installed at the end of the second insertion portion, and a hydraulic unit is provided to be able to provide hydraulic pressure to the first internal space and the second internal space, respectively.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wireless power transfer system of a rotating body. More particularly, the present invention relates to a turret moiring system capable of wireless power transfer capable of wirelessly supplying power using a magnetic resonance method.

  Vessels equipped with floating crude oil production, storage facilities and floating storage facilities perform work while maintaining the moored state at the working position on the sea.

  At this time, a turret mooring system is a method for fixing a chain dropped from a ship to a seabed surface, and is used to moor the ship at a working position on the sea. The Turret Mooring System also provides the power needed for drilling ships to drill gas and crude oil on the seabed and provides the cables needed to make electrical communication with the drilling ship. Used to

  As mentioned above, the cable provided to the drilling vessel may twist as the drilling vessel moves, so the turret moiring system may be used to prevent such twisting. And turret and other equipment.

  The moonpools and turrets mentioned above contain various parts to prevent cable twisting, such parts are not only relatively expensive but also complicated in structure, so they are more prone to failure and worn out by use Frequently occur.

  Therefore, when such conventional moonpools and turrets are used, the power supply line often twists due to component failure or wear, etc., and if such a twist causes the power supply line to break, a serious safety problem may occur. There are things that can be brought about, which will be a big problem.

  An object of the present invention is to solve the above-mentioned conventional problems, and provide a turret moiring system capable of wireless power transfer capable of wirelessly supplying power using a magnetic resonance method. It is to do.

  According to the present invention, the object is a base installed on a ship according to the present invention, and rotatably installed on the base, an insertion hole is formed in a direction perpendicular to the rotation axis on one side, and the rotation axis is installed on the insertion hole And a first power unit disposed in the base portion and receiving an alternating current from the outside to generate an electromagnetic field, and disposed in the rotator; A second power unit that generates a direct current by resonating with an electromagnetic field generated by the first power unit and transmits the generated direct current to the cable; a motor unit that provides a rotational force to the rotating body; A stopper portion installed on a base portion and operating to prevent the rotating body from rotating, a hydraulic portion for providing hydraulic pressure to the stopper portion to operate the stopper portion, and the rotating body A marker unit installed on one side, a sensor unit including a reader unit installed on one side of the base unit, the motor unit, the hydraulic unit, and the sensor unit are electrically connected, and the marker unit is And a controller configured to control the hydraulic unit to stop the motor unit and to insert the stopper unit into the insertion hole when facing the leader unit, and the second power unit includes the first electric power. A plurality of converter units disposed so as to face each other and disposed along the inner peripheral surface or the outer peripheral surface of the rotating body, the first power unit converting the alternating current supplied from the outside into a direct current; An inverter unit that converts a direct current supplied from the converter unit into an alternating current, and a first carp that generates an electromagnetic field using the alternating current supplied from the inverter unit A second coil unit that generates an induction alternating current by resonating with the first coil unit; and a direct current that rectifies the induction alternating current generated by the second coil unit. A rectifying unit for converting into current, and a converting unit for converting into a predetermined direct current by receiving the transmission of direct current converted from the rectifying unit, the stopper unit is installed in the base unit, and the first internal space A housing portion for forming the first insertion portion movably installed in the first internal space so as to be inserted into the insertion hole by oil pressure; and an elastic material, the end of the first insertion portion being provided A first elastic portion installed in the second portion, a second insertion portion movably installed in a second internal space formed in the first insertion portion so as to be inserted into the auxiliary insertion hole by hydraulic pressure, and elastic Provided with a material, said second A second elastic portion may be installed at an end of the insertion portion, and the hydraulic portion may be provided to provide hydraulic pressure to the first internal space and the second internal space. It is achieved by a turret moiring system capable of wireless power transfer.

  According to the present invention, in the turret moiring system, by using the magnetic resonance method, wireless power can be supplied to the rotating body on the ship. This has the effect of basically eliminating the conventional problem of cable twisting caused by the rotation of the rotating body, and the mechanical structure inside the rotating body is simplified as compared with the prior art, and The cost at design time is reduced, and maintenance and maintenance are facilitated.

  Further, according to the present invention, the rotating body can be easily stopped physically. According to this, since the rotating body does not rotate even when the flow of the ocean current increases, it is possible to effectively prevent the end of the cable connected to the device disposed on the seabed from being broken.

FIG. 1 is a diagram schematically illustrating an entire configuration of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 1 is a diagram showing in detail an overall configuration of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 5 is a diagram showing an electrical connection between configurations of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 5 is a view illustrating a wireless power transfer process of a first power unit and a second power unit of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 4 is a detailed view of a base and a rotating unit of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention; FIG. 5 is a detailed view of a stopper of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention; FIG. 7 is a view illustrating the operation of the stopper of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 7 is a view illustrating the operation of the stopper of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 7 is a view illustrating the operation of the stopper of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 7 is a view illustrating the operation of the stopper of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention.

  Hereinafter, some embodiments of the present invention will be described in detail by way of exemplary drawings. In adding reference symbols to components of each drawing, it should be noted that the same components have the same reference as possible, even if they are displayed on other drawings. .

  Further, in the description of the embodiments of the present invention, when it is determined that the detailed description of related known configurations or functions disturbs the understanding of the embodiments of the present invention, the detailed description will be omitted.

  Further, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b) can be used. Such a term is merely to distinguish the component from the other components, and the term does not limit the nature, order, or order of the component.

  A turret moiring system capable of wireless power transfer according to an embodiment of the present invention will now be described in detail with reference to the attached drawings.

  FIG. 1 is a diagram schematically showing the overall configuration of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention, and FIG. 2 is a diagram showing wireless power transfer according to an embodiment of the present invention. FIG. 3 is a diagram showing in detail the overall configuration of a possible turret moiring system, and FIG. 3 shows an electrical connection between the constituents of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention. FIG. 4 is a view showing a wireless power transfer process of the first power unit and the second power unit of the turret moiring system capable of wireless power transfer according to an embodiment of the present invention, FIG. 5 is a diagram showing in detail a base unit and a rotating unit of a turret moiring system capable of wireless power transfer according to an embodiment of the present invention, and FIG. 6 is a wireless power according to an embodiment of the present invention Turret moiring system capable of transmission A view showing a stopper portion in detail, FIGS. 7 to 10 are views showing the operation of the stopper portion of the wireless power transfer is possible turret mooring system according to an embodiment of the present invention.

  As shown in FIGS. 1 to 6, the turret moiring system 100 capable of wireless power transfer according to an embodiment of the present invention comprises a base unit 110, a rotating body 120, a first power unit 130, and a second power unit 140. And a motor unit 150, a stopper unit 160, a hydraulic unit 170, a sensor unit 180, and a control unit 190.

  The base portion 110 is provided in a moon pool installed on a ship, and a housing space is formed. In such a base portion 110, a first power unit 130 described later is installed along the outer peripheral surface or the inner peripheral surface of the base portion 110.

  The rotating body 120 is rotatably installed in the above-mentioned storage space, and is provided by a cylindrical turret.

  An insertion hole V1 into which a first insertion portion 162 described later is inserted is formed in the rotation body 120, and one side surface of the rotation body 120 forming the insertion hole V1 is depressed upward, and a second insertion described later is formed. An auxiliary insertion hole V2 into which the portion 163 is inserted is formed.

  On the other hand, the insertion hole V1 is formed in the direction perpendicular to the rotation axis of the rotary body 120, and the auxiliary insertion hole V2 is formed in the direction parallel to the rotation axis of the rotary body 120.

  In addition, a second power unit 140 to be described later is installed on the rotating body 120, and the second power unit 140 is installed to face the first power unit 130, and along the inner peripheral surface or the outer peripheral surface of the rotating body 120. Can be installed in multiple.

  By the arrangement of the first power unit 130 and the second power unit 140 as described above, the second coil 141 of the second power unit 140 can face the first coil unit 133 of the first power unit 130, whereby The efficiency of wireless power transmission can be greatly increased.

  On the other hand, the arrangement intervals of the plurality of second power units 140 may be determined based on the rotation speed and the rotation speed of the rotating body 120 so that the area in which the second power unit 140 faces the first power unit 130 is optimized. Must be adjusted by the angle. That is, when the rotational speed or rotational angle of the rotary body 120 is relatively large, the arrangement interval should be set relatively large, and when the rotational speed or rotational angle of the rotary body 120 is relatively small. The placement interval should be set relatively small.

  The first power unit 130 is supplied with an alternating current from the outside to generate an electromagnetic field, and is installed in the base unit 110 described above. The first power unit 130 includes the converter unit 131, the inverter unit 132, and the first coil unit 133.

  The converter unit 131 receives supply of alternating current from the outside and converts it into direct current, and is connected to an inverter unit 132 described later.

  The converter unit 131 receives an alternating current from an external power supply device so that an inverter unit 132 described later generates an alternating voltage of a size suitable for transmission to the first coil unit 133. Convert to DC current.

  The inverter unit 132 receives the direct current from the converter unit 131 described above and converts it into an alternating current, and is connected to the converter unit 131 described above and a first coil unit 133 described later.

  The inverter unit 132 converts the direct current supplied from the converter unit 131 into an alternating current and transmits the alternating current to the first coil unit 133 such that the first coil unit 133 forms an electromagnetic field.

  That is, the alternating current supplied from the external power supply device passes through the converter unit 131 and the inverter unit 132 described above to convert the first coil unit 133 into an alternating current in a form suitable for forming an electromagnetic field.

  The first coil unit 133 receives an alternating current from the inverter unit 132 described above to generate an electromagnetic field, and is connected to the inverter unit 132.

  Such a first coil unit 133 receives supply of alternating current from the above-described inverter unit 132 to form an electromagnetic field. At this time, since the second coil portion 141 is provided at the same frequency as the frequency of the first coil portion 133, the second coil portion 141 resonates by the electromagnetic field generated by the first coil portion 133.

  The term "resonance" means a phenomenon in which when an object having a specific frequency is externally applied with a force of the same frequency, the amplitude increases and the energy increases. Therefore, according to the above-mentioned resonance, energy (induction alternating current) can be generated in the second coil portion 141 by the first coil portion 133.

  The second power unit 140 resonates with the electromagnetic field generated by the first power unit 130 to generate a direct current, and is installed on the rotating body 120 described above. The second power unit 140 includes the second coil unit 141, the rectifying unit 142, and the converting unit 143.

  The second coil section 141 generates an induction alternating current by resonating with the electromagnetic field generated by the first coil section 133 described above, and is connected to the rectifying section 142.

  As described above, such a second coil portion 141 is provided at the same frequency as the first coil portion 133. Therefore, when the first coil unit 133 generates an electromagnetic field, the second coil unit 141 resonates to generate energy, that is, an induced alternating current. Thereafter, the generated induction alternating current is supplied to the rectifying unit 142.

  The rectifying unit 142 rectifies the induction alternating current generated by the second coil unit 141 into a direct current, and is connected to the second coil unit 141 described above and a converting unit 143 described later.

  Among the various components installed inside a typical mechanical device, the devices and components installed for controlling, sensing, etc. of the mechanical device are, for the most part, electromagnetically sensitive and, therefore, such devices and The parts should be driven by direct current with low electromagnetic disturbance. Therefore, after the induction alternating current generated by the second coil unit 141 is rectified and converted into a direct current, there is a need to supply the converted direct current to various devices and components.

  According to the rectifying unit 142 described above, the induced alternating current generated by the second coil unit 141 is easily rectified to a direct current, and thereby, the direct current is applied to various components installed inside the mechanical device disposed on the seabed. Can be supplied.

  The converting unit 143 is for transmitting the direct current converted from the rectifying unit 142 described above to convert it into a predetermined direct current, and is connected to the rectifying unit 142 and is connected to the inside of the mechanical device disposed on the seabed by a cable. Connected to various parts.

  Although the induction alternating current generated by the second coil unit 141 is converted into a direct current by the rectifying unit 142 described above, the converted direct current is immediately supplied to various parts installed inside the machine apparatus It is not suitable to Therefore, there is a need to convert the converted direct current back into a direct current (predetermined direct current) of an appropriate voltage required when driving various components installed inside the mechanical device.

  Therefore, according to the conversion unit 143 described above, the direct current transmitted from the rectification unit 142 can be easily converted into a predetermined direct current, which is suitable for driving various components in the mechanical device. A direct current (scheduled direct current) can be supplied to various components inside the machine located on the seabed.

  According to the first power unit 130 including the converter unit 131, the inverter unit 132, and the first coil unit 133, and the second power unit 140 including the second coil unit 141, the rectification unit 142, and the conversion unit 143 described above, the turret moiring system The magnetic resonance type wireless power supply is realized.

  Therefore, according to the base unit 110, the rotating body 120, the first power unit 130, and the second power unit 140, wireless power can be supplied from the ship to the rotating body by the magnetic resonance method. This has the effect of basically eliminating the conventional problem of cable twisting caused by the rotation of the rotating body, and the mechanical structure inside the rotating body is simplified as compared with the prior art, and The cost at design time is reduced, and maintenance and maintenance are facilitated.

  On the other hand, when power is supplied to various devices disposed on the seabed such as drilling vessels for boring gas or crude oil, the flow of the ocean current may increase depending on the conditions of the seabed and weather conditions. At this time, if the rotating body 120 is not stopped, the amount of rotation and the amount of change in rotation of the rotating body 120 greatly increase, which causes the cable to sway, and the end of the cable connected to the device placed on the seabed. There is a risk that the unit may be damaged by the swing. Therefore, in such a case, the rotating body 120 has to be stopped.

  The motor unit 150, the stopper unit 160, the hydraulic unit 170, the sensor unit 180, and the control unit 190, which will be described later, are necessary when it is necessary to forcibly stop the rotating body 120 as described above.

  The motor unit 150 provides rotational force to the rotating body 120 described above, and is geared to the rotating body 120. The motor unit 150 is rotated by control of the control unit 190 described later to forcibly rotate the rotating body 120.

  The stopper portion 160 operates to prevent the rotating body 120 from rotating, and is installed on the base portion 110.

  More specifically, the stopper portion 160 includes a housing portion 161, a first insertion portion 162, a first elastic portion 162a, a second insertion portion 163, and a second elastic portion 163a.

  The housing portion 161 is installed on the base portion 110, and forms a first internal space. A first insertion portion 162 described later is movably installed in such a first inner space. On the other hand, the first internal space communicates with the hydraulic unit 170 so that the hydraulic unit 170 described later can provide fluid.

  The first insertion portion 162 is provided in a rod shape and is inserted into an insertion hole V1 formed in the rotary body 120 by hydraulic pressure, and is movably installed in a first internal space formed in the housing portion 161. Ru.

  Such a first insertion portion 162 linearly moves in a direction perpendicular to the rotation axis of the rotating body 120 when the hydraulic pressure is generated by the hydraulic unit 170 described later providing fluid to the first internal space, and the rotating body It moves to the insertion hole V1 formed at 120. According to this, the rotation of the rotating body 120 is physically blocked by the first insertion portion 162.

  In addition, a second internal space is formed inside the first insertion portion 162. The second insertion portion 163 described later is accommodated in such a second inner space. The second internal space communicates with a hydraulic unit 170 described later so that the second insertion portion 163 can move to the auxiliary insertion hole V2 by hydraulic pressure.

  Meanwhile, although not shown in the drawings, the bottom surface of the insertion hole V1 and the bottom surface of the housing portion 161 may be provided to be inclined downward with respect to the sea level. According to this, when the provision of oil pressure is interrupted in the first internal space by the hydraulic unit 170, the first insertion part 162 may be re-inserted from the insertion hole V1 along the inclined surface and positioned in the first internal space it can.

  The first elastic portion 162a is disposed at an end of the first insertion portion 162, and is provided by an elastic material. According to such a first elastic portion 162a, a collision occurs when the first insertion portion 162 moves to the first insertion hole V1 by hydraulic pressure and collides with one side surface of the rotating portion forming the first insertion hole V1. There is an effect that the power can be greatly reduced.

  The second insertion portion 163 is provided in a rod shape and is inserted into the auxiliary insertion hole V2 formed in the rotary body 120 by hydraulic pressure, and can be moved to the second internal space formed in the first insertion portion 162 Installed in

  Such a second insertion portion 163 linearly moves along the rotational axis direction of the rotating body 120 when the hydraulic pressure is generated by the hydraulic unit 170 described later providing fluid to the second internal space, and the rotating body 120 is thus rotated. It moves to the auxiliary insertion hole V2 formed in. This physically prevents the first insertion portion 162 from being separated from the insertion hole V1.

  The second elastic portion 163a is installed at an end of the second insertion portion 163, and is formed of an elastic material. According to such a second elastic portion 163a, when the second insertion portion 163 moves to the auxiliary insertion hole V2 by hydraulic pressure and collides with one side surface of the rotating portion forming the auxiliary insertion hole V2, the collision force generated is There is an effect that can be greatly reduced.

  According to the stopper portion 160 including the housing portion 161, the first insertion portion 162, the first elastic portion 162a, the second insertion portion 163, and the second elastic portion 163a as described above, the rotation of the rotating body 120 is physically blocked. There is an effect that can be done.

  The hydraulic unit 170 provides the hydraulic pressure to the stopper unit 160 so that the stopper unit 160 described above operates, and is installed on a ship and controlled by a control unit 190 described later.

  More specifically, the hydraulic unit 170 provides hydraulic pressure to the first internal space formed in the housing portion 161 and the second internal space formed in the first insertion portion 162, respectively. According to such a hydraulic unit 170, there is an effect that the rotation of the rotating body 120 can be physically prevented easily using the hydraulic pressure.

  The sensor unit 180 is installed so that the insertion hole V1 formed in the rotating body 120 can face the stopper portion 160, and the marker unit 181 installed on one side of the rotating body 120, and the base And a leader unit 182 installed on one side of the unit 110.

  When the leader unit 182 faces the marker unit 181 and the leader unit 182 senses the marker unit 181 while the rotating body 120 is rotated by the operation of the motor unit 150 by the control unit 190 described later, the leader unit 182 controls The stop signal is transmitted to the unit 190. The control unit 190 to which the stop signal is transmitted immediately stops the operation of the motor unit 150. At this time, as shown in FIG. 5, the position where the rotating body 120 is stopped is the position where the insertion hole V1 faces the stopper portion 160.

  According to the control process of the control unit 190 by the sensor unit 180 as described above, the insertion hole V1 can easily be faced to the stopper unit 160.

  The control unit 190 controls the motor unit 150 so that the marker unit 181 faces the reader unit 182, and controls the hydraulic unit 170 so that the stopper unit 160 is inserted into the insertion hole V1 formed in the rotating body 120. It is electrically connected to the motor unit 150, the hydraulic unit 170, and the sensor unit 180.

  The process of forcibly stopping the rotating body 120 by the control unit 190 is as follows.

  First, when the motor unit 150 is operated by the control unit 190, the rotating body 120 is rotated. At this time, when the reader unit 182 faces the marker unit 181, the reader unit 182 transmits a stop signal to the control unit 190. The control unit 190 to which the stop signal is transmitted immediately stops the operation of the motor unit 150. By the above process, as shown in FIG. 7, the insertion hole V1 faces the stopper portion 160.

  Thereafter, as shown in FIG. 8, the hydraulic unit 170 is operated by the control of the control unit 190 to supply the fluid to the first internal space, thereby generating the hydraulic pressure in the first internal space. The hydraulic pressure generated by the above-described process causes the first insertion portion 162 to move linearly to move to the first insertion space, and thereafter is completely inserted into the insertion hole V1 as shown in FIG.

  Thereafter, as shown in FIG. 10, the hydraulic unit 170 is operated by the control of the control unit 190 to supply the fluid to the second internal space, thereby generating the hydraulic pressure in the second internal space. The second insertion portion 163 is upwardly moved to be inserted into the auxiliary insertion hole V2 by the hydraulic pressure generated by the above-described process.

  According to the control of the control unit 190 as described above, the rotating body 120 can be easily stopped physically. According to this, since the rotating body 120 does not rotate even when the flow of the ocean current increases, it is effectively prevented that the end of the cable connected to the device disposed on the seabed is damaged due to the rocking of the cable. Can be

  Therefore, the embodiment of the present invention includes the base 110, the rotating body 120, the first power unit 130, the second power unit 140, the motor unit 150, the stopper unit 160, the hydraulic unit 170, the sensor unit 180 and the control unit 190. According to the turret moiring system 100 capable of wireless power transfer, it is possible to implement wireless power transfer with a turret moiring system. According to this, the structure of the turret can be simply designed, and the maintenance and maintenance of the turret can be facilitated.

  Also, according to the turret moiring system 100 capable of wireless power transfer according to an embodiment of the present invention, the rotating body 120 can be physically stopped easily. According to this, even when the flow of the ocean current is increased, since the rotating body 120 does not rotate, it is possible to effectively prevent the end of the cable connected to the device disposed on the seabed from being broken. .

  The scope of the present invention is not limited to the embodiments described above, and may be embodied in various forms within the scope of the appended claims. Without departing from the scope of the present invention as claimed in the claims, the person skilled in the art to which the present invention belongs can be modified within the scope of the claims of the present invention to any of various possible modifications. Considered to be within range.

100: Wireless power transfer system of a rotating body according to an embodiment of the present invention 110: Base portion 120: Rotating body 130: First power portion 131: Converter portion 132: Inverter portion 133: First coil portion 140: Second power Part 141: Second coil part 142: Rectification part 143: Conversion part 150: Motor part 160: Stopper part 161: Housing part 162: First insertion part 162a: First elastic part 163: Second insertion part 163a: Second elasticity Unit 170: Hydraulic unit 180: Sensor unit 181: Marker unit 182: Leader unit 190: Control unit V1: Insertion hole V2: Auxiliary insertion hole

Claims (1)

A base installed on a ship,
A rotary body rotatably mounted on the base portion, having an insertion hole formed in a direction perpendicular to the rotation axis on one side, and an auxiliary insertion hole formed in the direction parallel to the rotation axis on the insertion hole;
A first power unit disposed in the base unit, which receives an alternating current from the outside to generate an electromagnetic field;
A second power unit disposed on the rotating body, generating a direct current by resonating with an electromagnetic field generated by the first power unit, and transmitting the generated direct current to a cable;
A motor unit that provides a rotational force to the rotating body;
A stopper portion disposed on the base portion and operating to prevent the rotating body from rotating;
A hydraulic unit for providing hydraulic pressure to the stopper portion so that the stopper portion operates;
A marker unit installed on one side of the rotating body, a sensor unit including a reader unit installed on one side of the base unit, the motor unit, the hydraulic unit, and the sensor unit; When the marker unit faces the leader unit, the control unit controls the hydraulic unit to stop the motor unit and to insert the stopper unit into the insertion hole.
The second power unit is
It is installed so as to face the first power unit, and installed in a plurality along the inner peripheral surface or the outer peripheral surface of the rotating body,
The first power unit is
An electromagnetic field is generated using a converter unit for converting an alternating current supplied from the outside into a direct current, an inverter unit for converting a direct current supplied from the converter unit into an alternating current, and an alternating current supplied from the inverter unit Including a first coil portion that
The second power unit is
A second coil unit that generates an induced alternating current by resonating with the first coil unit, a rectifying unit that rectifies and converts the induced alternating current generated by the second coil unit into a direct current, and the rectifying unit Including a converter for receiving the transmission of the direct current converted from
The stopper portion is
A housing portion which is installed in the base portion and which forms a first internal space, a first insertion portion which is movably installed in the first internal space so as to be inserted into the insertion hole by hydraulic pressure, and an elastic material A first elastic portion installed at an end of the first insertion portion and movable to a second internal space formed in the first insertion portion so as to be inserted into the auxiliary insertion hole by hydraulic pressure And a second elastic portion provided with an elastic material and installed at an end of the second insertion portion,
The hydraulic unit is
A turret moiring system capable of wireless power transfer, which is provided to be capable of providing hydraulic pressure to the first internal space and the second internal space.

Images