Rotating mirror driving mechanism for thermonuclear fusion device

Abstract

The invention relates to the technical field of plasma heating, in particular to a rotating mirror driving mechanism for a thermonuclear fusion device, which comprises a shell, a first mounting frame, a rotating part, a cooling sleeve and a driving device, the shell is provided with a fusion cavity, the first mounting frame is arranged in the fusion cavity, and the first mounting frame is connected with a pin shaft used for driving the rotating mirror to rotate; the cooling sleeve is arranged in the fusion cavity, and the cooling sleeve is provided with a first mounting hole and a first cooling flow channel; the first end of the rotating part is in transmission connection with the pin shaft, and the second end of the rotating part penetrates through the first mounting hole and extends out of the shell; the driving device is fixed outside the shell, the output end of the driving device is connected with the second end of the rotating part so as to drive the rotating part to rotate, the rotating part can be cooled by introducing cooling liquid into the first cooling flow channel, the temperature of the rotating shaft is reduced, and therefore the use temperature of the driving device making contact with the rotating part is reduced, and the service life of the driving device is prolonged. And the service life of the driving device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of plasma heating, and in particular to a rotating mirror driving mechanism for a thermonuclear fusion device. Background Art

[0002] Electromagnetic waves in the millimeter wave frequency band have high energy. Millimeter wave antennas can accurately transmit millimeter wave energy to the plasma area in thermonuclear fusion devices. In thermonuclear fusion devices, millimeter wave energy is often required to be concentrated in a specific direction and area. By controlling the phase and amplitude of each antenna unit in the antenna array, the electromagnetic waves radiated by each unit are interfered and superimposed in space, thereby forming a beam with a specific shape and directivity. The beam can be scanned within a certain angle range, and the millimeter wave energy can be accurately directed to a specific position in the plasma for heating, diagnosis and other operations. The rotating mirror is the core component of the millimeter wave antenna, which is used to reflect the millimeter wave to the specified position within a certain angle range and accuracy. Therefore, a driving mechanism is required to drive the rotating mirror to complete the mirror rotation.

[0003] The temperature inside the nuclear fusion device is extremely high. Part of the driving shaft used to drive the rotating mirror to rotate is set in the fusion chamber of the fusion device, and the other part extends out of the fusion chamber and is connected to the motor. The temperature of the rotating shaft is extremely high, and the operating temperature requirements for the motor are also high. The higher operating temperature has high requirements for the motor and affects the service life of the motor. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the temperature of the rotating shaft of the rotating mirror driving mechanism used in the existing thermonuclear fusion device is extremely high, which places high requirements on the motor used to drive the rotating shaft and affects the service life of the motor.

[0005] In order to solve the above technical problems, the object of the present invention is to provide a rotating mirror driving mechanism for a thermonuclear fusion device, comprising: A housing, a first mounting frame, a rotating member, a cooling jacket and a driving device; The housing has a fusion chamber, the first mounting frame is arranged in the fusion chamber, and the first mounting frame is connected with a pin shaft for driving the rotating mirror to rotate; The cooling jacket is arranged in the fusion chamber, and the cooling jacket has a first mounting hole and a first cooling flow channel; The first end of the rotating member is drivingly connected to the pin shaft, and the second end of the rotating member passes through the first mounting hole and extends out of the housing; The driving device is fixed outside the housing, and the output end of the driving device is connected to the second end of the rotating member to drive the rotating member to rotate.

[0006] As a preferred solution, the rotating mirror comprises a mirror body and a cooling plate fixedly attached to the back of the mirror body, and a second cooling channel is provided in the cooling plate.

[0007] As a preferred embodiment, the rotating mirror driving mechanism for the thermonuclear fusion device includes a connecting pipe, and the connecting pipe connects the first cooling channel and the second cooling channel.

[0008] As a preferred solution, the first cooling channel includes a first sub-channel and a second sub-channel isolated from each other; The connecting pipe includes a first pipe body and a second pipe body, wherein one end of the first pipe body is connected to the first sub-channel and the other end is connected to the second cooling channel, and one end of the second pipe body is connected to the second cooling channel and the other end is connected to the second sub-channel.

[0009] As a preferred embodiment, the rotating mirror driving mechanism for the thermonuclear fusion device also includes a third tube body and a fourth tube body, one end of the third tube body is connected to the first sub-channel, and the other end extends out of the shell; one end of the fourth tube body is connected to the second sub-channel, and the other end extends out of the shell.

[0010] As a preferred solution, the first mounting bracket is detachably connected with an encoder for measuring the rotation angle of the pin shaft.

[0011] As a preferred solution, a worm wheel is rotatably connected to the first mounting frame, the pin shaft is fixed to the worm wheel, the worm wheel is meshed with a worm, and the first end of the rotating member is transmission-connected to the worm.

[0012] As a preferred solution, the rotating member and the worm are arranged at an angle, and the first end of the rotating member is connected to the worm via a cross-axis transmission mechanism.

[0013] As a preferred solution, the outer side wall of the rotating member is spaced apart from the inner side wall of the first mounting hole; The rotating mirror driving mechanism for the thermonuclear fusion device includes at least two bearings, each of which is arranged at intervals along the axial direction of the cooling jacket, the outer ring of each bearing is fixed to the cooling jacket, and the first end of the rotating member is fixedly inserted into the inner hole of each bearing.

[0014] As a preferred solution, the rotating member includes a rotating rod and an eccentric rod; the rotating rod is rotatably inserted into the first mounting hole, the first end of the rotating rod is drivingly connected to the pin shaft, and the second end of the rotating rod is hinged to the eccentric rod; The rotating mirror driving mechanism for the thermonuclear fusion device further comprises a sealing tube and a fixing sleeve, wherein the sealing tube sleeve is arranged on the outer side of the eccentric rod, and the first end of the sealing tube is sealed and fixed to the end of the cooling sleeve away from the first mounting frame, and the second end of the sealing tube is sealed and fixed to the outer peripheral side of the eccentric rod; The shell has a second mounting hole, the fixing sleeve is fixedly inserted into the second mounting hole, the fixing sleeve has a receiving cavity, the sealing tube and the eccentric rod are both arranged in the receiving cavity, the driving device is fixed to one end of the sealing sleeve located outside the fusion chamber, one end of the eccentric rod away from the rotating rod is fixedly connected to the output shaft of the driving device, and the end of the eccentric rod away from the rotating rod is eccentrically arranged with the output shaft of the driving device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses a rotating mirror driving mechanism for a thermonuclear fusion device, comprising a shell, a first mounting frame, a rotating member, a cooling jacket and a driving device; the shell has a fusion chamber, the first mounting frame is arranged in the fusion chamber, and the first mounting frame is connected with a pin shaft for driving the rotating mirror to rotate; the cooling jacket is arranged in the fusion chamber, and the cooling jacket has a first mounting hole and a first cooling channel; the first end of the rotating member is drivingly connected to the pin shaft, and the second end of the rotating member passes through the first mounting hole and extends out of the shell; the driving device is fixed outside the shell, and the output end of the driving device is connected to the second end of the rotating member to drive the rotating member to rotate, and the rotating member can be cooled by introducing a coolant into the first cooling channel, thereby reducing the temperature of the rotating shaft, thereby reducing the use temperature of the driving device in contact with the rotating member, and improving the service life of the driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure in which the rotating mirror driving mechanism for the thermonuclear fusion device of the present invention is installed in a housing; Figure 2 It is an axonometric diagram of the rotating mirror driving mechanism for the thermonuclear fusion device of the present invention; Figure 3 is a first schematic diagram of the mounting structure of the rotating mirror; Figure 4 is a second schematic diagram of the mounting structure of the rotating mirror; Figure 5 is a top view of the thermonuclear fusion device of the present invention; Figure 6 for Figure 5 Middle AA section view; Figure 7 is a top view of the cooling jacket; Figure 8 for Figure 7 Middle BB section view; Fig. 9 for Figure 7 Middle CC section view; Fig.10 for Fig. 9 A partial enlarged view of point D in the middle; Fig.11 for Fig. 9 A partial enlarged view of point E in the middle; In the figure, 100, fusion chamber, 1, shell, 21, first mounting frame, 22, second mounting frame, 3, rotating member, 31, rotating rod, 32, eccentric rod, 321, first rod-shaped portion, 322, second rod-shaped portion, 4, cooling jacket, 41, first mounting hole, 42, first cooling channel, 421, first sub-channel, 422, second sub-channel, 43, inner sleeve, 44, outer sleeve, 441, process hole, 45, first blocking disk, 451, first annular protrusion, 452, second annular protrusion, 453, first outer weld, 454, second outer weld, 46. ​​Second sealing disk, 461. Third annular protrusion, 464. Annular recess, 465. Third outer weld, 466. Inner weld, 47. First spacer, 48. Second spacer, 5. Driving device, 6. Rotating mirror, 61. Mirror body, 62. Cooling plate, 71. First tube body, 72. Second tube body, 73. Third tube body, 74. Fourth tube body, 81. Encoder, 82. Worm gear transmission mechanism, 821. Worm wheel, 822. Worm, 83. Cross-axis transmission mechanism, 84. Bearing, 91. Sealing tube, 92. Fixing sleeve, 93. Reducer. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0019] like Figures 1 to 11As shown, a preferred embodiment of the rotating mirror driving mechanism for a thermonuclear fusion device of the present invention comprises: a housing 1, a first mounting frame 21, a rotating member 3, a cooling jacket 4 and a driving device 5; the housing 1 has a fusion chamber 100, the first mounting frame 21 is arranged in the fusion chamber 100, the first mounting frame 21 can be fixed to the inner wall of the fusion chamber 100 by welding or bolt connection, the first mounting frame 21 is connected to a pin shaft for driving the rotating mirror 6 to rotate, and the pin shaft can be connected to the first mounting frame 21 by a rotating bearing; the cooling jacket 4 is arranged in the fusion chamber 100, and the cooling jacket 4 is connected to the first mounting frame 21. The cooling sleeve 4 can be fixed in the fusion chamber 100 by the second mounting frame 22, and the second mounting frame 22 is fixed to the inner wall of the fusion chamber 100 by welding or bolting. The cooling sleeve 4 has a first mounting hole 41 and a first cooling channel 42, and the first cooling channel 42 is arranged at intervals from the first mounting hole 41; the first end of the rotating member 3 is connected to the pin shaft, and the second end of the rotating member 3 passes through the first mounting hole 41 and extends out of the shell 1; the driving device 5 is fixed outside the shell 1, and the output end of the driving device 5 is connected to the second end of the rotating member 3 to drive the rotating member 3 to rotate. By setting the cooling sleeve 4, the rotating member 3 is cooled, and the heat transferred from the rotating member 3 to the driving device 5 is reduced, thereby reducing the use temperature requirement of the driving device 5, increasing the service life of the driving device 5, reducing the equipment cost, and improving the stability and reliability of the nuclear fusion device.

[0020] It should be noted that the thermonuclear fusion device itself has a complex electromagnetic environment, and the drive device 5 usually uses a motor, which generates electromagnetic signals. Therefore, it is necessary to make the drive device 5 and the rotating mirror 6 have a sufficiently long distance. In this embodiment, the distance between the drive device 5 and the rotating mirror 6 is greater than two meters. The drive device 5 is set at a position at least two meters away, which can keep a certain distance from the magnetic field generated by the thermonuclear fusion device, reduce the influence of the magnetic field of the fusion device on the signal of the drive device 5, improve the rotation accuracy of the drive device 5, and improve the measurement accuracy and control accuracy. In addition, a part of the rotating member 3 must be located in the fusion chamber 100. In this embodiment, the length of the shell 1 along the length direction of the rotating member 3 is longer, the length of the rotating member 3 located in the fusion chamber 100 is greater than the length located outside the fusion chamber 100, and the length of the cooling jacket 4 is also longer. In the fusion chamber 100, the temperature of the rotating member 3 gradually decreases with the increase of the distance between the rotating member 3 and the rotating mirror 6. The cooling jacket 4 is arranged in the fusion chamber 100, and the length of the cooling jacket 4 is arranged longer, which can reduce the temperature drop gradient along the length direction of the rotating member 3, so that the temperature of the rotating member 3 located in the fusion chamber 100 and close to the driving device 5 is smaller than the temperature of the rotating member 3 located outside the shell 1 and close to the shell 1. Stress deformation of the rotating member 3 due to the large temperature difference between the inside and outside of the fusion chamber 100 is avoided. Therefore, the adjustment accuracy of the rotating mirror driving mechanism for the thermonuclear fusion device of this embodiment is higher.

[0021] In a nuclear fusion device, in order to make the nuclear fusion reaction reach the required high temperature conditions, a millimeter wave antenna is required to transmit high-power millimeter wave energy to the plasma. The millimeter wave gyrotron used in the rotating mirror 6 can generate megawatt-level power. A large amount of energy is transmitted through the rotating mirror 6, which will cause the temperature of the rotating mirror 6 to be extremely high, and the heat of the rotating mirror 6 will be transmitted to the rotating member 3 through the pin and the transmission mechanism. In this embodiment, the rotating mirror 6 includes a mirror body 61 and a cooling plate 62 fixedly attached to the back of the mirror body 61. A second cooling flow channel is provided in the cooling plate 62. The cooling plate 62 can cool the rotating mirror 6, reduce the heat transmitted from the rotating mirror 6 to the rotating member 3, and further reduce the temperature of the rotating member 3.

[0022] Among them, since the temperature of the rotating mirror 6 is extremely high, a coolant with a lower temperature cannot be used for cooling the rotating mirror 6, because the use of a coolant with a lower temperature will cause a large temperature difference between the back and front of the rotating mirror 6, which is easy to cause the rotating mirror 6 to deform due to the temperature difference. In this embodiment, the rotating mirror driving mechanism for the thermonuclear fusion device includes a connecting pipe, which connects the first cooling channel 42 and the second cooling channel. The temperature of the coolant flowing out of the first cooling channel 42 is increased after absorbing the heat of the rotating member 3, so that the temperature difference between the temperature of the coolant flowing into the second cooling channel and the temperature of the rotating mirror 6 itself is within a reasonable range, which not only achieves the cooling of the rotating mirror 6, but also does not cause the rotating mirror 6 to deform.

[0023] In this embodiment, the first cooling channel 42 includes a first sub-channel 421 and a second sub-channel 422 which are isolated from each other; the connecting pipe includes a first tube body 71 and a second tube body 72, one end of the first tube body 71 is connected to the first sub-channel 421, and the other end is connected to the second cooling channel, and one end of the second tube body 72 is connected to the second cooling channel, and the other end is connected to the second sub-channel 422. Specifically, the ends of the first tube body 71 and the second tube body 72 can be connected to the rotating mirror 6 or the cooling jacket 4 by welding, and the coolant first flows into the first sub-channel 421 to cool the rotating part 3, and then flows into the second cooling channel through the first tube body 71 to cool the rotating mirror 6, and then flows out from the second cooling channel, and flows into the second sub-channel 422 through the second tube body 72, and then flows out from the second sub-channel 422 to the outside of the housing 1.

[0024] To facilitate the circulation of the coolant, in this embodiment, the rotating mirror driving mechanism for the thermonuclear fusion device further includes a third tube body 73 and a fourth tube body 74, one end of the third tube body 73 is connected to the first sub-channel 421, and the other end extends out of the shell 1; one end of the fourth tube body 74 is connected to the second sub-channel 422, and the other end extends out of the shell 1. In this embodiment, a heat exchange device can be arranged outside the shell 1 to cool the coolant flowing out of the fourth tube body 74, and the coolant cooled by the heat exchange device flows into the third tube body 73 again to realize the circulation of the coolant.

[0025] There are many ways to form the first sub-channel 421 and the second sub-channel 422 in the cooling jacket 4, such as drilling or extruding the first sub-channel 421 and the second sub-channel 422. Figures 7 to 11As shown, the cooling sleeve 4 includes an inner sleeve 43, an outer sleeve 44, a first blocking plate 45, a second blocking plate 46, a first partition bar 47 and a second partition bar 48; the inner sleeve 43 is coaxially inserted into the outer sleeve 44, the outer wall of the inner sleeve 43 and the inner wall of the outer sleeve 44 are arranged at intervals, and the interval between the outer wall of the inner sleeve 43 and the inner wall of the outer sleeve 44 forms a first cooling channel 42, the first partition bar 47 and the second partition bar 48 are fixedly inserted in the first cooling channel 42, and the first partition bar 47 and the second partition bar 48 surround the axis of the inner sleeve 43 and the outer sleeve 44. The first partition bar 47 and the second partition bar 48 are evenly spaced and divide the first cooling channel 42 into a first sub-channel 421 and a second sub-channel 422; the first sealing plate 45 is fixed to the first end of the inner sleeve 43 and the first end of the outer sleeve 44, the first end of the inner sleeve 43 is the end of the inner sleeve 43 close to the rotating mirror 6, and the first end of the outer sleeve 44 is the end of the outer sleeve 44 close to the rotating mirror 6; the second sealing plate 46 is fixed to the second end of the inner sleeve 43 and the second end of the outer sleeve 44, so that the first sub-channel 421 and the second sub-channel 422 form a closed space. To facilitate the processing of the cooling sleeve 4, in this embodiment, the end of the first sealing disk 45 opposite to the inner sleeve 43 and the outer sleeve 44 is provided with a first annular protrusion 451 protruding in the direction of the inner sleeve 43, and a second annular protrusion 452 protruding in the direction of the outer sleeve 44; the first annular protrusion 451 is welded to the first end of the inner sleeve 43 by a first outer weld 453, and the second annular protrusion 452 and the first end of the outer sleeve 44 are butt-welded by a second outer weld 454. A third annular protrusion 461 is provided at a position of the second sealing disk 46 opposite to the second end of the outer sleeve 44, and the third annular protrusion 461 is butt-welded to the second end of the outer sleeve 44 via a third outer weld 465. An annular recess 464 is provided at a position of the second sealing disk 46 opposite to the second end of the inner sleeve 43, and the second end of the inner sleeve 43 is inserted into the annular recess 464 and butt-welded to the end wall of the annular recess 464 via an inner weld 466. When assembling the cooling jacket 4, the first end of the inner sleeve 43 is firstly butt-welded to the first annular protrusion 451, and the second end of the outer sleeve 44 is butt-welded to the third annular protrusion 461, and then the first spacer 47 and the second spacer 48 are welded to the outer wall of the inner sleeve 43, and then the inner sleeve 43 with the first spacer 47 and the second spacer 48 is inserted into the outer sleeve 44, and the first end of the outer sleeve 44 is butt-welded to the second annular protrusion 452, and the second end of the inner sleeve 43 is butt-welded to the end wall of the annular recess 464. This structure of the cooling jacket 4 can make the volume of the first sub-channel 421 and the second sub-channel 422 larger, ensuring the cooling effect.

[0026] Furthermore, in order to ensure that the first spacer 47 and the second spacer 48 are firmly fixed, in this embodiment, a plurality of process holes 441 are provided at positions of the tube wall of the outer sleeve 44 opposite to the first spacer 47 and the second spacer 48, and each process hole 441 is arranged at intervals along the axial direction of the outer sleeve 44. After the inner sleeve 43, the outer sleeve 44, the first blocking disk 45 and the second blocking disk 46 are welded, the end of the first spacer 47 away from the inner sleeve 43 is welded to the outer sleeve 44 through each process hole 441, and the end of the second spacer away from the inner sleeve 43 is welded to the outer sleeve 44, and the process holes 441 are blocked while welding.

[0027] Among them, the second end of the outer sleeve 44 is provided with a liquid inlet connected to the first sub-channel 421, and is also provided with a liquid outlet connected to the second sub-channel 422. The third tube body 73 is connected to the liquid inlet, the fourth tube body 74 is connected to the liquid outlet, and the first tube body 71 and the second tube body 72 are connected at a position close to the second end of the outer sleeve 44.

[0028] In this embodiment, the outer wall of the rotating member 3 is spaced apart from the inner wall of the first mounting hole 41; the rotating mirror driving mechanism for the thermonuclear fusion device includes at least two bearings 84, each bearing 84 is spaced apart along the axial direction of the cooling jacket 4, the outer ring of each bearing 84 is fixed to the cooling jacket 4, and the first end of the rotating member 3 is fixedly penetrated in the inner hole of each bearing 84. The arrangement of the bearings 84 ensures the smooth rotation of the rotating member 3, and the inner wall of the cooling jacket 4 is spaced apart from the outer side of the rotating member 3, which prevents the coolant with a lower temperature from contacting the rotating member 3 with a higher temperature, thereby preventing the rotating member 3 from being deformed by the cooling liquid due to contact with the cooling jacket. In this embodiment, two bearings 84 are provided, the outer rings of the two bearings 84 are respectively fixed at the two ends of the cooling jacket 4, the two bearings 84 are coaxially arranged, and the rotating member 3 is fixedly penetrated in the inner holes of the two bearings 84.

[0029] After the rotating mirror 6 and the rotating mirror driving mechanism are arranged in the fusion device, the driving device 5 drives the rotating member 3 to rotate, so as to adjust the angle of the rotating mirror 6. In order to facilitate the operator to quickly adjust the rotating mirror 6 to the right position, in this embodiment, the driving device 5 is a stepping motor, and the stepping motor is equipped with a built-in encoder capable of measuring the angle between the actual position of the motor shaft and the zero position of the motor shaft, and the first mounting frame 21 is detachably connected with an encoder 81 for measuring the rotation angle of the pin shaft. Specifically, before the rotating mirror 6 and the rotating mirror driving mechanism are arranged in the fusion device, the encoder 81 is connected to the first mounting frame 21, the rotating mirror 6 is adjusted to the initial position, and the shaft of the stepping motor is adjusted to the zero position, and the motor shaft is connected to the rotating member 3 by a coupling. Thereafter, the stepping motor is started, and the corresponding relationship between the angle of the motor shaft and the test value of the encoder 81 is recorded, so as to form a corresponding relationship record table between the encoder 81 value and the angle of the motor shaft, and the record table can cover the working range of the rotating mirror 6. After the record sheet is completed, the encoder 81 is removed, and then the rotating mirror 6 and the rotating mirror driving mechanism are set in the fusion device to prevent the high temperature inside the fusion device from damaging the encoder 81. That is, the encoder 81 is used in the debugging and installation stage, and the encoder 81 will not be used during the actual operation. When the operator needs to adjust the angle of the rotating mirror 6, the adjustment is made according to the record sheet. In this embodiment, pins are connected on both sides of the rotating mirror 6, and the two pins are respectively connected to the two sides of the first mounting frame 21. The encoder 81 is on one of the pins, and the first end of the rotating member 3 is transmission-connected to the other pin.

[0030] In this embodiment, a worm wheel 821 is rotatably connected to the first mounting frame 21, a pin is fixed to the worm wheel 821, a worm 822 is meshed with the worm wheel 821, a first end of the rotating member 3 is transmission-connected to the worm 822, and the worm wheel 821 and the worm 822 form a worm gear transmission mechanism 82. The worm gear transmission mechanism 82 has high adjustment accuracy and a self-locking function, thereby ensuring the adjustment accuracy of the rotating mirror 6 and the stable position of the rotating mirror 6 after adjustment. Specifically, the worm wheel 821 is a fan-shaped worm wheel, which is rotatably arranged on the first mounting frame 21, and the center of the fan-shaped worm wheel is fixed to the pin.

[0031] In this embodiment, the rotating member 3 and the worm 822 are arranged at an angle, and the first end of the rotating member 3 is connected to the worm 822 via a cross-axis transmission mechanism 83. The arrangement of the cross-axis transmission mechanism 83 makes the arrangement of the rotating member 3 in the housing 1 of the present invention more flexible, avoiding interference between the rotating member 3 and other components in the housing 1, thereby allowing more components to be arranged in the housing 1, making the structure of the thermonuclear fusion device using the rotating mirror driving mechanism for the thermonuclear fusion device of the present invention more compact. Specifically, the cross-axis transmission mechanism 83 is a cross-axis universal joint.

[0032] In this embodiment, the rotating member 3 includes a rotating rod 31 and an eccentric rod 32; the rotating rod 31 is rotatably inserted into the first mounting hole 41, the first end of the rotating rod 31 is connected to the pin, and the second end of the rotating rod 31 is hinged to the eccentric rod 32. The rotating mirror driving mechanism for the thermonuclear fusion device of this embodiment also includes a sealing tube 91 and a fixing sleeve 92, the sealing tube 91 is sleeved on the outside of the eccentric rod 32, and the first end of the sealing tube 91 is sealed and fixed to the end of the cooling sleeve 4 away from the first mounting frame 21, and the second end of the sealing tube 91 is sealed and fixed to the outer peripheral side of the eccentric rod 32; the housing 1 has a second mounting hole, the fixing sleeve 92 is fixedly inserted into the second mounting hole, the fixing sleeve 92 has an accommodating cavity, the sealing tube 91 and the eccentric rod 32 are both arranged in the accommodating cavity, the driving device 5 is fixed to the end of the sealing sleeve located outside the fusion chamber 100, the end of the eccentric rod 32 away from the rotating rod 31 is fixedly connected to the output shaft of the driving device 5, and the end of the eccentric rod 32 away from the rotating rod 31 is eccentrically arranged with the output shaft of the driving device 5. To ensure the adjustment accuracy, in this embodiment, the output shaft of the driving device 5 is connected to a reducer 93 , and the second end of the eccentric rod 32 is connected to the output shaft of the reducer 93 .

[0033] Specifically, the sealing tube 91 is a high-temperature resistant flexible tube, and the eccentric rod 32 includes a first rod-shaped portion 321 and a second rod-shaped portion 322. The first rod-shaped portion 321 and the second rod-shaped portion 322 are arranged at an angle, and the angle between the first rod-shaped portion 321 and the second rod-shaped portion 322 is an acute angle. The first end of the first rod-shaped portion 321 is hinged to the rotating rod 31, and the second end of the first rod-shaped portion 321 is fixedly connected to the second rod-shaped portion 322. The second rod-shaped portion 322 is vertically fixed to the output shaft of the driving device 5, and the end of the sealing tube 91 facing away from the cooling jacket 4 is sealed and fixed on the outside of the first rod-shaped portion 321. The output shaft of the driving device 5 rotates, driving the second rod-shaped portion 322 to rotate. The second rod-shaped portion 322 drives the first rod-shaped portion 321 to rotate while causing the first rod-shaped portion 321 to swing in the accommodating cavity. During the rotation and swinging of the first rod-shaped portion 321, the first end of the sealing tube 91 will not rotate relative to the end of the cooling jacket 4, and the second end of the sealing tube 91 will not rotate relative to the second rod-shaped portion 322. The sealing tube 91 adapts to the position change of the second rod-shaped portion 322 by torsional deformation. The first end of the first rod-shaped portion 321 is provided with a mounting groove, and the end of the rotating rod 31 is inserted in the mounting groove, and a pin body is penetrated in the groove wall of the mounting groove, and the pin body is perpendicular to the groove wall of the mounting groove and penetrated in the rotating rod 31.

[0034] The temperature and vacuum degree inside the thermonuclear fusion device are relatively high. If the eccentric rod 32 is not provided, the rotating rod 31 is passed through the side wall of the shell 1 and connected to the driving device 5. Since the rotating rod 31 needs to rotate, the rotating connection node between the rotating rod 31 and the shell 1 is difficult to meet the sealing requirements of the fusion chamber 100. In this embodiment, one end of the sealing tube 91 is sealed and fixed to the end of the cooling jacket 4, and the rotating connection node between the rotating rod 31 and the cooling jacket 4 is in the same air pressure state as the tube cavity of the sealing tube 91. The second end of the sealing tube 91 is sealed and fixed to the side wall of the eccentric rod 32. When the eccentric rod 32 rotates and swings, the second end of the sealing tube 91 will not rotate with the eccentric rod 32, so that the second end of the sealing tube 91 and the second rod-shaped portion 322 can be fixedly connected by a flange structure, thereby ensuring the sealing of the connection node between the second end of the sealing tube 91 and the eccentric rod 32.

[0035] In summary, the rotating mirror driving mechanism for the thermonuclear fusion device of the present invention can cool the rotating part 3 by introducing coolant into the first cooling channel 42, thereby reducing the temperature of the rotating shaft, thereby reducing the operating temperature of the driving device 5 in contact with the rotating part 3, and improving the service life of the driving device 5. Moreover, the angular scanning accuracy of the rotating mirror 6 is high, and it is suitable for use in radiation, high temperature, and vacuum environments. The accuracy of the rotation angle of the rotating mirror 6 of the present invention is tested. Within the rotation range of a large angle of 16°, the angular rotation accuracy satisfies ≤0.25°.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A rotating mirror driving mechanism for a thermonuclear fusion device, characterized in that: include: A housing (1), a first mounting frame (21), a rotating member (3), a cooling jacket (4), and a driving device (5); The housing (1) has a fusion chamber (100), the first mounting frame (21) is arranged in the fusion chamber (100), and the first mounting frame (21) is connected to a pin shaft for driving a rotating mirror (6) to rotate; The cooling jacket (4) is arranged in the fusion chamber (100), and the cooling jacket (4) has a first mounting hole (41) and a first cooling flow channel (42); The first end of the rotating member (3) is drivingly connected to the pin shaft, and the second end of the rotating member (3) passes through the first mounting hole (41) and extends out of the housing (1); The driving device (5) is fixed outside the housing (1), and an output end of the driving device (5) is connected to the second end of the rotating member (3) to drive the rotating member (3) to rotate.

2. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 1, characterized in that: The rotating mirror (6) comprises a mirror body (61) and a cooling plate (62) fixedly attached to the back of the mirror body (61), wherein a second cooling channel is provided in the cooling plate (62).

3. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 2, characterized in that: The rotating mirror driving mechanism for the thermonuclear fusion device comprises a connecting pipe, wherein the connecting pipe connects the first cooling flow channel (42) and the second cooling flow channel.

4. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 3, characterized in that: The first cooling flow channel (42) comprises a first sub-flow channel (421) and a second sub-flow channel (422) which are isolated from each other; The connecting pipe comprises a first pipe body (71) and a second pipe body (72); one end of the first pipe body (71) is connected to the first sub-channel (421) and the other end is connected to the second cooling channel; one end of the second pipe body (72) is connected to the second cooling channel and the other end is connected to the second sub-channel (422).

5. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 4, characterized in that: The rotating mirror driving mechanism for the thermonuclear fusion device further comprises a third tube body (73) and a fourth tube body (74); one end of the third tube body (73) is connected to the first sub-flow channel (421), and the other end extends out of the shell (1); one end of the fourth tube body (74) is connected to the second sub-flow channel (422), and the other end extends out of the shell (1).

6. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 1, characterized in that: The first mounting frame (21) is detachably connected to an encoder (81) for measuring the rotation angle of the pin shaft.

7. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 1, characterized in that: A worm wheel (821) is rotatably connected to the first mounting frame (21), the pin shaft is fixed to the worm wheel (821), a worm (822) is meshed with the worm wheel (821), and the first end of the rotating member (3) is transmission-connected to the worm (822).

8. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 7, characterized in that: The rotating member (3) and the worm (822) are arranged at an angle, and the first end of the rotating member (3) is connected to the worm (822) via a cross-axis transmission mechanism (83).

9. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 1, characterized in that: The outer side wall of the rotating member (3) and the inner side wall of the first mounting hole (41) are arranged in a spaced relationship; The rotating mirror driving mechanism for the thermonuclear fusion device comprises at least two bearings (84), each of the bearings (84) being arranged at intervals along the axial direction of the cooling jacket (4), the outer ring of each of the bearings (84) being fixed to the cooling jacket (4), and the first end of the rotating member (3) being fixedly inserted into the inner hole of each of the bearings (84).

10. The rotating mirror driving mechanism for a thermonuclear fusion device according to claim 1, characterized in that: The rotating member (3) comprises a rotating rod (31) and an eccentric rod (32); the rotating rod (31) is rotatably inserted into the first mounting hole (41), the first end of the rotating rod (31) is drivingly connected to the pin shaft, and the second end of the rotating rod (31) is hingedly connected to the eccentric rod (32); The rotating mirror driving mechanism for the thermonuclear fusion device further comprises a sealing tube (91) and a fixing sleeve (92), wherein the sealing tube (91) is sleeved on the outside of the eccentric rod (32), and a first end of the sealing tube (91) is sealed and fixed to an end of the cooling sleeve (4) away from the first mounting frame (21), and a second end of the sealing tube (91) is sealed and fixed to the outer peripheral side of the eccentric rod (32); The housing (1) has a second mounting hole, the fixing sleeve (92) is fixedly inserted into the second mounting hole, the fixing sleeve (92) has a receiving cavity, the sealing tube (91) and the eccentric rod (32) are both arranged in the receiving cavity, the driving device (5) is fixed to one end of the sealing sleeve located outside the fusion chamber (100), one end of the eccentric rod (32) facing away from the rotating rod (31) is fixedly connected to the output shaft of the driving device (5), and one end of the eccentric rod (32) facing away from the rotating rod (31) is eccentrically arranged with respect to the output shaft of the driving device (5).

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