Damping device of rotating equipment and high-speed rotating system

Abstract

The invention discloses a damping device of rotating equipment and a high-speed rotating system, a sleeve of the damping device is sleeved on a rotating shaft of the rotating equipment, and the rotating shaft extends along the vertical direction. The supporting plate is arranged in the horizontal direction, an installation opening is formed in the middle of the supporting plate and penetrates through the supporting plate, and the sleeve is installed in the installation opening. And the vibration reduction seat and the supporting plate are arranged in a spaced mode in the vertical direction, and the vibration reduction seat surrounds the periphery of the sleeve. And the vibration reduction joint is located between the sleeve and the vibration reduction seat, the sleeve is connected with the vibration reduction seat through the vibration reduction joint, and the vibration reduction joint is used for converting transverse vibration of the rotating shaft into vertical vibration of the outer side edge of the vibration reduction seat. The outer side edge of the vibration reduction base is connected with the supporting plate through an elastic piece, and the elastic piece can elastically stretch out and draw back in the vertical direction and is used for removing vertical vibration of the outer side edge of the vibration reduction base. The vibration damping device of the rotating equipment can achieve the function of suppressing vibration of the rotating shaft.

Description

Technical Field

[0001] The invention particularly relates to a vibration reduction device and a high-speed rotating system of a rotating device. Background Art

[0002] High-speed rotating equipment is usually used to mix or centrifugally separate feed liquids. High-speed rotating equipment includes a drive motor, a rotating shaft and a rotating chamber. The drive motor is connected to the rotating chamber through the rotating shaft to drive the rotating chamber to rotate. In the field of nuclear fuel processing, during the high-speed rotation of the rotating chamber, it is necessary to continuously introduce feed liquid into it so that the feed liquid is mixed or separated in the high-speed rotating cavity, and then the feed liquid is discharged after meeting the predetermined requirements.

[0003] The shaft will deform when subjected to force. During high-speed rotation and load changes, the elasticity and inertia of the shaft will cause vibration. Moreover, the additional imbalance applied from the outside and the excitation of the fluid movement inside the cavity will cause the vibration to intensify. Vibration is a kind of continuous damage that is extremely harmful to the centrifuge. Excessive vibration, especially lateral vibration, will cause continuous damage to the parts and overall structure of high-speed rotating equipment, and in severe cases, it can cause the high-speed rotating equipment to fail to operate normally. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a vibration reduction device for rotating equipment and a high-speed rotating system in view of the above-mentioned deficiencies in the prior art. The vibration reduction device for rotating equipment can realize the function of suppressing the vibration of the rotating shaft.

[0005] According to an embodiment of the first aspect of the present invention, a vibration reduction device for a rotating device is provided, comprising: the sleeve is sleeved on the rotating shaft of the rotating device, and the rotating shaft extends in the vertical direction. The support plate is arranged in the horizontal direction, and a mounting opening is opened in the middle of the support plate, and the mounting opening passes through the support plate, and the sleeve is installed in the mounting opening. The vibration reduction seat is arranged with a spacing from the support plate in the vertical direction, and the vibration reduction seat surrounds the sleeve. The vibration reduction joint is located between the sleeve and the vibration reduction seat, and the sleeve is connected to the vibration reduction seat through the vibration reduction joint, and the vibration reduction joint is used to convert the lateral vibration of the rotating shaft into the vertical vibration of the outer edge of the vibration reduction seat. The outer edge of the vibration reduction seat is connected to the support plate through an elastic member, and the elastic member can elastically expand and contract in the vertical direction, and the elastic member is used to remove the vertical vibration of the outer edge of the vibration reduction seat.

[0006] Preferably, the vibration damping joint comprises a first joint part and a second joint part, wherein the first joint part is sleeved on the sleeve, the second joint part surrounds the outer side of the first joint part, and the second joint part is connected to the vibration damping seat. A first spherical surface is provided on the outer side of the first joint part, and a second spherical surface is provided on the inner side of the second joint part, and the second spherical surface abuts against the first spherical surface. When the rotating shaft vibrates laterally, the second spherical surface rolls relative to the first spherical surface, so that the second joint part and the vibration damping seat swing.

[0007] Preferably, a first fitting surface is provided on the inner side of the first joint portion, the first fitting surface is an annular surface, the shape of the first fitting surface is adapted to the shape of the outer side wall of the sleeve, and the first fitting surface fits the outer side wall of the sleeve. A second fitting surface is provided on the outer side of the second joint portion, the second fitting surface is an annular surface, the shape of the second fitting surface is adapted to the shape of the inner side wall of the vibration damping seat, and the second fitting surface fits the inner side wall of the vibration damping seat.

[0008] Preferably, the vibration damping seat is located below the support plate, and the vibration damping seat includes a surrounding portion and a connecting portion, the surrounding portion surrounds the sleeve, the upper end of the surrounding portion is connected to the connecting portion, the connecting portion extends outward in the horizontal direction, and the outer end edge of the connecting portion is connected to the support plate through an elastic member. A receiving groove is provided between the inner wall of the surrounding portion and the outer side wall of the sleeve, and the vibration damping joint is received in the receiving groove.

[0009] Preferably, a supporting portion is provided at the lower end of the surrounding portion, and the supporting portion extends inwardly in a horizontal direction, and the supporting portion is used to support the vibration-reducing joint.

[0010] Preferably, there is an avoidance gap between the inner edge of the support portion and the outer wall of the sleeve, so that the second joint portion can drive the vibration damping seat to swing.

[0011] Preferably, it further comprises a fixed bracket and a damper, wherein the support plate is connected to the fixed bracket via the damper, and the damper extends in a vertical direction to cooperate with the elastic member to remove the vibration of the outer edge of the vibration-damping seat in the vertical direction.

[0012] Preferably, the elastic member includes a guide link and a vibration damping block, and the vibration damping block is placed above the support plate. The guide link extends in the vertical direction and sequentially passes through the vibration damping block, the support plate and the connecting portion of the vibration damping seat, and the two ends of the guide link are respectively provided with a first clamping member and a second clamping member, the first clamping member is located above the vibration damping block and connected to the upper end of the guide link, and the second clamping member is located below the connecting portion of the vibration damping seat and connected to the lower end of the guide link, and the first clamping member and the second clamping member cooperate to clamp and connect the vibration damping block, the support plate and the connecting portion.

[0013] Preferably, there are multiple vibration-damping blocks, which are arranged along the axial direction of the guide connecting rod, and a gasket is provided between two adjacent vibration-damping blocks.

[0014] Preferably, the vibration damping block is a rubber vibration damping block.

[0015] According to an embodiment of the second aspect of the present invention, a high-speed rotating system is provided, comprising a rotating device and a vibration reduction device for the rotating device, wherein the rotating device comprises a rotating device drive motor, a rotating shaft and a rotating chamber, wherein the output end of the drive motor is connected to the rotating chamber via the rotating shaft, and the vibration reduction device for the rotating device is connected to the rotating shaft for reducing vibration of the rotating shaft.

[0016] Preferably, the system includes a first area, a second area and a cover plate, the cover plate is located between the first area and the second area, the drive motor is located in the first area, the rotating chamber is located in the second area, the rotating shaft passes through the cover plate, the drive motor is connected to the rotating chamber via the rotating shaft, a liquid container is placed in the second area, radioactive liquid is stored in the liquid container, and the liquid container is connected to the rotating chamber for transporting radioactive liquid into the rotating chamber.

[0017] The vibration damping seat of the vibration damping device of the rotating equipment in the present invention is connected to the support plate through an elastic member, and the elastic member can elastically expand and contract in the vertical direction. The vertical vibration generated by the rotating shaft can be transmitted to the elastic member through the sleeve and the vibration damping seat, and the elastic member generates elastic expansion and contraction to avoid the vibration force from being rigidly transmitted to the support plate, thereby removing the vertical vibration. The device also converts the lateral vibration of the rotating shaft into the swing of the vibration damping seat through the vibration damping joint. At this time, the connecting part of the vibration damping seat (that is, the outer edge of the vibration damping seat) generates vertical vibration. The vertical vibration of the connecting part can be removed by the elastic expansion and contraction of the elastic member. Therefore, the vibration damping device of the rotating equipment can realize the function of suppressing the vibration of the rotating shaft.

[0018] Furthermore, in high-speed rotating equipment, since the rotating chamber needs to continuously pass liquid into and out of it, the rotating chamber is greatly stimulated by the additional imbalance applied from the outside and the movement of fluid inside the cavity. Therefore, the rotating chamber is identified as the vibration source center. When the existing vibration reduction device performs lateral vibration reduction, it can only remove the lateral vibration through the elastic parts in the horizontal direction. Therefore, it is necessary to directly reduce the vibration of the vibration source center (i.e., the rotating chamber) to remove the lateral vibration. However, in high-speed rotating equipment in the field of nuclear fuel, the rotating chamber is usually in a highly radioactive atmosphere. If the vibration reduction device is directly set at the position of the rotating chamber, it will cause inconvenience in disassembly, maintenance and replacement of the vibration reduction device. However, the present device converts the lateral vibration of the rotor into a swing with the axial direction as the pivot through the vibration reduction joint, support plate, elastic part and damper. Even if the vibration reduction device is not at the vibration source center, vibration suppression can be achieved. In summary, the present vibration reduction device can achieve both vertical vibration reduction of the rotating shaft and lateral vibration reduction of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a vibration reduction device for a rotating device in some embodiments of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the sleeve in some embodiments of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the elastic member in some embodiments of the present invention.

[0022] In the figure: 1-driving motor, 2-fixed bracket, 3-elastic member, 31-vibration damping block, 4-support plate, 5-damper, 6-cover plate, 7-sleeve, 8-first joint part (sphere), 9-second joint part (spherical shell), 10-vibration damping seat (joint bearing seat), 11-rotating shaft, 12-locking nut, 13-first bearing, 14-sleeve body, 15-second bearing, 16-metal gasket, 17-guide connecting rod, 18-first clamping member, 19-second clamping member. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0024] In the description of the present invention, it should be noted that terms such as "up", "down", "left" and "right" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0025] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] First of all, it should be noted that the liquid produced in nuclear power plants and nuclear fields needs to be treated before it can meet the requirements of subsequent process operations. The amount of liquid in the process is large and the radioactivity level is high, so it is suitable to use top-suspended high-speed rotating equipment for treatment.

[0028] The working principle of the top-hung high-speed rotating equipment is to mix or separate the material and liquid in the high-speed rotating cavity, and then discharge the material and liquid after reaching the predetermined requirements and enter the subsequent process flow. Its advantages are large processing capacity, long continuous operation time, and easy maintenance. The disadvantage is that there will be large vibration during operation, which requires an excellent vibration reduction system.

[0029] Exemplarily, the top-suspended high-speed rotating equipment in a nuclear power plant is usually installed on a horizontal floor, and the top and bottom of the floor are respectively the first area and the second area. A liquid container is placed in the second area, and the liquid container is used to store radioactive liquid. Therefore, the top of the floor is a low-radioactive atmosphere area, and the bottom of the floor is a high-radioactive atmosphere area. The drive motor of the top-suspended high-speed rotating equipment is located in the first area, the rotating chamber is located in the second area, and the liquid container is connected to the rotating chamber for conveying radioactive liquid to the cavity of the rotating chamber. The drive motor drives the rotating chamber to rotate at high speed through the rotating shaft, thereby achieving mixing or centrifugal separation of the liquid.

[0030] Due to the requirements of radioactive environmental shielding, the transmission system of top-hung high-speed rotating equipment is generally a flexible shaft. Vibration is inevitable during high-speed rotation. At the same time, the additional imbalance applied from the outside and the excitation of fluid movement inside the cavity will also cause vibration. Due to the special requirements of the radioactive environment, the vibration reduction system needs to be regularly inspected and replaced, so it cannot be set at the center of the vibration source, which brings certain difficulties to vibration control. Vibration is a kind of continuous damage that is extremely harmful to the centrifuge. Excessive lateral vibration will cause continuous damage to the components and overall structure of the sedimentation centrifuge, and in severe cases, it may cause the sedimentation centrifuge to fail to operate normally.

[0031] Example 1

[0032] See also Figure 1 The present invention discloses a vibration reduction device for a rotating device, comprising: a support plate 4, a sleeve 7, a vibration reduction joint and a vibration reduction seat 10.

[0033] Among them, the sleeve 7 is sleeved on the rotating shaft 11 of the rotating equipment, and the rotating shaft 11 extends in the vertical direction. The support plate 4 is arranged in the horizontal direction, and an installation opening is opened in the middle of the support plate 4. The installation opening runs through the support plate 4, and the sleeve 7 is installed in the installation opening. The vibration damping seat 10 is arranged with a spacing from the support plate 4 in the vertical direction, and the vibration damping seat 10 surrounds the sleeve 7. The vibration damping joint is located between the sleeve 7 and the vibration damping seat 10. The sleeve 7 is connected to the vibration damping seat 10 through the vibration damping joint. The vibration damping joint is used to convert the lateral vibration of the rotating shaft 11 into the vertical vibration of the outer edge of the vibration damping seat 10. The outer edge of the vibration damping seat 10 is connected to the support plate 4 through an elastic member 3. The elastic member 3 can elastically expand and contract in the vertical direction. The elastic member 3 is used to remove the vertical vibration of the outer edge of the vibration damping seat 10.

[0034] It should be noted that the device is applicable to any high-speed rotating equipment, and is particularly applicable to overhead high-speed rotating equipment in fields with radioactive environments such as the nuclear field, post-processing field, and nuclear fuel processing field.

[0035] Specifically, the vibration damping seat 10 of the vibration damping device of the rotating equipment is connected to the support plate 4 through the elastic member 3, and the elastic member 3 can be elastically expanded and contracted in the vertical direction. The vertical vibration generated by the rotating shaft 11 can be transmitted to the elastic member 3 through the sleeve 7 and the vibration damping seat 10, and the elastic member 3 generates elastic expansion to avoid the vibration force from being rigidly transmitted to the support plate 4, thereby removing the vertical vibration. The device also converts the lateral vibration of the rotating shaft 11 into the swing of the vibration damping seat 10 through the vibration damping joint. At this time, the connecting part of the vibration damping seat 10 (that is, the horizontal edge of the vibration damping seat 10) generates vertical vibration. The vertical vibration of the connecting part can be removed by the elastic expansion and contraction of the elastic member 3. Therefore, the vibration damping device of the rotating equipment can realize the function of suppressing the vibration of the rotating shaft 11.

[0036] Furthermore, in the top-suspended high-speed rotating equipment, since the rotating chamber needs to continuously pass liquid into and out of it, the rotating chamber is greatly stimulated by the additional imbalance applied from the outside and the movement of the fluid inside the cavity, so the rotating chamber is identified as the vibration source center. When the existing vibration reduction device is performing lateral vibration reduction, it can only remove the lateral vibration through the elastic member 3 in the horizontal direction, so it is necessary to directly reduce the vibration of the vibration source center (i.e., the rotating chamber) to remove the lateral vibration. In the process of the vibration reduction device reducing the vibration of the rotating equipment for a long time, the elastic member 3 and the vibration reduction joint will inevitably wear out, so the vibration reduction device needs to be replaced regularly. However, in the top-suspended high-speed rotating equipment in the nuclear fuel field, the rotating chamber is usually in a highly radioactive atmosphere. If the vibration reduction device is directly set at the position of the rotating chamber, it will cause inconvenience in disassembly, maintenance and replacement of the vibration reduction device.

[0037] The device converts the lateral vibration of the rotor into a swing with the axial direction as the pivot through the vibration-damping joint, the support plate 4, the elastic member 3 and the damper 5. Even if the vibration-damping device is not at the center of the vibration source, vibration suppression can be achieved.

[0038] In other words, the vibration reduction device of the rotating equipment can achieve vibration suppression of the entire top-suspended high-speed rotating equipment, that is, it can achieve vertical vibration reduction of the rotating shaft while also achieving lateral vibration reduction of the rotating shaft; in addition, the vibration reduction device can also meet the function of convenient disassembly and maintenance.

[0039] See also Figure 1 In some embodiments, the vibration damping joint includes a first joint portion 8 and a second joint portion 9. The first joint portion 8 is sleeved on the sleeve 7, the second joint portion 9 surrounds the outside of the first joint portion 8, and the second joint portion is connected to the vibration damping seat 10. A first spherical surface is provided on the outside of the first joint portion 8, and a second spherical surface is provided on the inside of the second joint portion 9. The second spherical surface abuts against the first spherical surface. When the rotating shaft 11 vibrates laterally, the second spherical surface rolls relative to the first spherical surface, so that the second joint portion 9 and the vibration damping seat 10 swing.

[0040] In this embodiment, the lateral vibration of the rotating shaft 11 is converted into the swing of the vibration-damping seat by adopting a structure in which two spherical joints cooperate with each other. The structure is simple and reliable, and has the advantage of being easy to replace.

[0041] Further, a first fitting surface is provided on the inner side of the first joint part 8, the first fitting surface is an annular surface, the shape of the first fitting surface is adapted to the shape of the outer wall of the sleeve 7, and the first fitting surface fits the outer wall of the sleeve 7. A second fitting surface is provided on the outer side of the second joint part 9, the second fitting surface is an annular surface, the shape of the second fitting surface is adapted to the shape of the inner wall of the vibration damping seat, and the second fitting surface fits the inner wall of the vibration damping seat. The first spherical surface and the second spherical surface are in contact with each other, and when the rotating shaft 11 vibrates laterally, the second spherical surface rolls relative to the first spherical surface, so that the second joint part 9 swings.

[0042] In this embodiment, the first fitting surface and the second fitting surface are provided so that the inner wall of the first joint portion 8 is in close contact with the outer wall of the sleeve 7, and the outer wall of the second joint portion 9 is in close contact with the inner wall of the vibration damping seat 10. In this way, the force generated by the lateral vibration of the rotating shaft 11 can be effectively transmitted to the vibration damping seat 10, and the vibration damping seat 10 can swing.

[0043] In addition, if Figure 1 As shown, the vertical section of the first spherical surface is a circular arc curve convex in the direction away from the rotation axis, and the vertical section of the second spherical surface is a circular arc curve convex in the direction close to the rotation axis. In addition, the horizontal section of the first joint part is in the shape of a circular ring. From top to bottom, the outer circle radius of the horizontal section of the first joint part gradually decreases while the inner circle radius remains unchanged, that is, the width of the circular ring on the horizontal section of the first joint part gradually decreases from top to bottom; the horizontal section of the second joint part is in the shape of a circular ring. From top to bottom, the inner circle radius of the horizontal section of the second joint part gradually decreases while the outer circle radius remains unchanged, that is, the width of the circular ring on the horizontal section of the first joint part gradually increases from top to bottom.

[0044] In this embodiment, the outer side surface (first spherical surface) of the first joint part is designed to be a spherical surface with a diameter of a horizontal section gradually decreasing from top to bottom, that is, the first joint part is in an inverted cone; and the inner side surface (second spherical surface) of the second joint part is designed to be a spherical surface with a diameter of a horizontal section gradually decreasing from top to bottom, that is, the inner cavity space of the second joint part is also in an inverted cone, so that the first joint part can be placed in the second joint part, and the first spherical surface and the second spherical surface can cooperate with each other. When the rotating shaft 11 does not generate lateral vibration, the central axes of the first spherical surface and the second spherical surface are both in a vertical state; when the rotating shaft 11 generates lateral vibration, it drives the sleeve 7 and the first joint part 8 to generate horizontal reciprocating displacement. At this time, the first spherical surface will squeeze the second spherical surface, thereby causing the second spherical surface to roll relative to the first spherical surface, so that the second joint part 9 and the damping seat 10 swing.

[0045] In other words, the vibration reduction unit includes a sphere (i.e., the first joint part 8), a spherical shell (i.e., the second joint part 9), a vibration reduction seat 10 (i.e., a joint bearing seat) and a rubber spring (i.e., an elastic member 3). The vibration reduction seat 10 is located below the support plate 4 and surrounds the middle outer wall of the sleeve 7. The vibration reduction seat 10 is elastically connected to the support plate 4 through a rubber spring. A receiving groove is provided between the inner wall of the vibration reduction seat 10 and the outer wall of the sleeve 7, and the receiving groove is used to accommodate the sphere and the spherical shell. Among them, a first fitting surface is provided on the inner side of the sphere, and a first spherical surface is provided on the outer side of the sphere. The shape of the first fitting surface of the sphere is adapted to the shape of the outer wall of the sleeve 7. The sphere is sleeved on the sleeve 7, and the first fitting surface of the sphere fits the outer wall of the sleeve 7. The inner side of the spherical shell is provided with a second spherical surface, and the outer side of the spherical shell is provided with a second fitting surface. The spherical shell surrounds the sphere, and the fitting shape of the second fitting surface of the spherical shell is adapted to the shape of the inner side wall of the receiving groove, and the second fitting surface of the spherical shell fits the inner side wall of the receiving groove. The second spherical surface of the spherical shell contacts the first spherical surface of the sphere, and is used to achieve force unloading during the vibration of the rotating shaft 11 through relative rolling between the spherical shell and the sphere when the centrifugal unit rotates at high speed to drive the rotating shaft 11 to vibrate, that is, the vibration force is transmitted to the rubber spring through the vibration damping seat 10, and vibration suppression is achieved through the expansion and contraction of the rubber spring.

[0046] See also Figure 1 In some embodiments, the vibration damping seat 10 is located below the support plate 4, and the vibration damping seat 10 includes a surrounding portion and a connecting portion, the surrounding portion surrounds the sleeve 7, the upper end of the surrounding portion is connected to the connecting portion, the connecting portion extends outward in the horizontal direction, and the outer edge of the connecting portion is connected to the support plate 4 through the elastic member 3. An accommodating groove is provided between the inner wall of the surrounding portion and the outer wall of the sleeve 7, and the vibration damping joint is accommodated in the accommodating groove.

[0047] In this embodiment, the vibration-damping joint is sleeved around the sleeve 7 and the vibration-damping joint is accommodated in the accommodating groove of the vibration-damping seat 10, so that the vibration-damping joint can be positioned vertically to facilitate the installation and replacement of the vibration-damping joint by the staff.

[0048] Furthermore, a support portion is provided at the lower end of the surrounding portion, and the support portion extends inwardly in the horizontal direction, and the support portion is used to support the vibration reduction joint. Specifically, the support portion supports the second joint portion 9, and because the inner cavity space of the second joint portion 9 is in an inverted cone shape, when the first joint portion 8 is placed in the second joint portion 9, the second joint portion 9 can provide an upward support force to the first joint portion 8. Moreover, there is an avoidance gap between the inner edge of the support portion and the outer wall of the sleeve 7, so that the second joint portion 9 can drive the vibration reduction seat 10 to swing.

[0049] like Figure 1 As shown, a stop block is also provided on the outer side wall of the sleeve, and the stop block is located above the first joint part, and is used to cooperate with the supporting part to position the vibration-damping joint in the vertical direction.

[0050] See also Figure 2 , the sleeve 7 includes: a sleeve body 14, an upper end cover and a lower end cover. A step surface protruding outward is provided in the middle of the rotating shaft 11, and the lower end cover, the sleeve body 14 and the upper end cover of the sleeve 7 are placed on the step surface in sequence. The upper end cover of the sleeve 7 is pressed against the sleeve body 14 by a locking nut 12. The inner sides of the two ends of the sleeve body 14 are respectively provided with bearing grooves, the bearing grooves are located between the sleeve 7 and the rotating shaft 11, and the bearing grooves surround the rotating shaft 11. The two bearing grooves respectively accommodate the first bearing 13 and the second bearing 15, and both bearings are sleeved on the rotating shaft 11. By providing the first bearing 13 and the second bearing 15, a sliding or rolling surface can be provided when the rotating shaft 11 rotates at high speed, thereby reducing friction. The first bearing 13 and the second bearing 15 can be sliding bearings, angular contact ball bearings, roller bearings, etc. Angular contact ball bearings are preferred.

[0051] Please continue reading Figure 1 In some embodiments, the device further includes a fixed bracket 2 and a damper 5. The support plate 4 is connected to the fixed bracket 2 through the damper 5. The damper 5 extends in the vertical direction and is used to cooperate with the elastic member 3 to remove the vibration of the outer edge of the vibration damping seat 10 in the vertical direction.

[0052] Specifically, the damper 5 may be a hydraulic damper 5, a gas pressure damper 5 or a spring damper 5, etc. In this embodiment, the support plate 4 is connected to the fixed bracket 2 via the damper 5, which can further achieve vibration reduction of high-speed rotating equipment.

[0053] See also Figure 3 The elastic member includes a guide link 17 and a vibration damping block 31, and the vibration damping block 31 is placed above the support plate 4. The guide link 17 extends in the vertical direction and sequentially penetrates the vibration damping block 31, the support plate 4 and the connection part of the vibration damping seat 10. The two ends of the guide link 17 are respectively provided with a first pressing member 18 and a second pressing member 19. The first pressing member 18 is located above the vibration damping block 31 and connected to the upper end of the guide link 17. The second pressing member 19 is located below the connection part of the vibration damping seat 10 and connected to the lower end of the guide link 17. The first pressing member 18 and the second pressing member 19 cooperate to press and connect the vibration damping block 31, the support plate 4 and the connection part.

[0054] In this embodiment, by providing the guide link 17, the elasticity can always produce elastic expansion and contraction in the vertical direction to avoid horizontal deviation. Preferably, the vibration damping block is a rubber vibration damping block, that is, the elastic member 3 is a rubber spring.

[0055] There are multiple damping blocks 31, which are arranged along the axial direction of the guide connecting rod, and a gasket is provided between two adjacent damping blocks. By providing multiple rubber damping blocks, vibration can be absorbed and mitigated more effectively, providing better damping performance. The addition of gaskets can change the vibration propagation path and further increase the damping effect of the elastic member 3. In addition, rubber materials may deform at high temperatures or after long-term use, and gaskets can compensate for these deformations to a certain extent, thereby extending the service life of the damping blocks.

[0056] The following is a description of the overall working process of this vibration reduction device:

[0057] The vibration reduction device belongs to a vibration reduction system for high-speed rotating equipment, and specifically relates to the vibration control of the rotating shaft system of the top-suspended high-speed rotating equipment during operation. According to the requirements for the setting of the radioactive zoning, it is set in an area that can be directly maintained by personnel.

[0058] Specifically, in order to achieve vibration suppression during the operation of the top-suspended rotating shaft system, the device includes a fixed bracket 2, a joint bearing, a bearing seat, a sleeve 7, a support plate 4, a vibration-damping spring, and a damper 5. The joint bearing also includes a first joint part 8 of the ball and a second joint part 9 of the ball shell, which are arranged inside the bearing seat. Angular contact bearings are arranged at the upper and lower ends of the sleeve 7 for shaft system positioning, and the rotating shaft system is suspended in the sleeve 7 and fixed by a locking nut 12. The sleeve 7 passes through the center of the joint bearing ball and is suspended on a fixed frame. The vibration-damping spring also includes a fixing rod, a rubber spring, a metal gasket 16 and a locking nut 12. The driving motor 1 is fixed to the upper part of the fixed bracket 2, the fixed bracket 2 is fixed to the cover plate 6, the shutdown bearing seat is fixed to the fixed bracket 2, a spherical shell and a sphere are arranged inside, the sleeve 7 passes through the sphere and is connected to the support plate 4 and is fixed by a locking nut 12, the fixing rod is fixed to the fixing bearing seat by the locking nut 12 and the rubber spring and the metal gasket 16 are pressed onto the support plate 4 by the locking nut 12, the upper part of the damper 5 is connected to the lower part of the support plate 4 and the fixed bracket 2, and the rotating shaft system is fixed in the sleeve 7 through an angular contact bearing.

[0059] When the top-suspended high-speed rotating equipment is running, the rotating shaft system, i.e. the rotating shaft 11, will generate lateral vibration. The lateral vibration is transmitted to the sleeve 7 and the sphere through the rotating shaft system, causing the sphere, i.e. the first joint part 8, to rotate in the spherical shell, i.e. the second joint part 9, with its own spherical center as the fulcrum, forcing the support plate 4 to perform a lever motion with the center of the upper surface of the sphere, thereby converting the lateral vibration of the rotating system into a swing with the axial direction as the pivot. The support plate 4 transmits the vibration to the shock-absorbing spring and the damper 5 and is consumed, thereby finally achieving vibration suppression.

[0060] In summary, the beneficial effects of this device are:

[0061] 1. Through the ball joint (i.e. the above-mentioned vibration reduction joint), the support plate 4, the vibration reduction spring and the damping, the lateral vibration of the rotor is converted into a swing with the axial direction as the pivot. Even if the vibration reduction system is not at the center of the vibration source, vibration suppression can be achieved.

[0062] 2. The vibration reduction system is installed outside the equipment room to facilitate regular maintenance and replacement.

[0063] Example 2

[0064] The present invention also discloses a high-speed rotating system, comprising a rotating device and the vibration reduction device of the rotating device in Example 1.

[0065] The rotating device includes a driving motor 1, a rotating shaft 11 and a rotating chamber. The output end of the driving motor 1 is connected to the rotating chamber through the rotating shaft 11, and the vibration reduction device of the rotating device is connected to the rotating shaft 11 for reducing vibration of the rotating shaft 11.

[0066] The system includes a first area, a second area and a cover plate 6, the cover plate 6 is cast in the installation floor and serves as the installation foundation of the rotating device. The cover plate 6 is located between the first area and the second area, the drive motor 1 is located in the first area, the rotating chamber is located in the second area, the rotating shaft 11 runs through the cover plate 6, the drive motor 1 is connected to the rotating chamber through the rotating shaft 11, a liquid container is placed in the second area, radioactive liquid is stored in the liquid container, and the liquid container is connected to the rotating chamber for transporting radioactive liquid into the rotating chamber.

[0067] By adopting the vibration reduction device in Example 1, the high-speed rotating system can achieve vibration suppression for the entire top-suspended high-speed rotating equipment, while satisfying the function of convenient disassembly and maintenance.

[0068] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A vibration reduction device for a rotating device, characterized in that: include: Support plate (4), sleeve (7), vibration-damping joint and vibration-damping seat (10); The sleeve (7) is sleeved on a rotating shaft (11) of the rotating device, and the rotating shaft (11) extends in a vertical direction; The support plate (4) is arranged in a horizontal direction, a mounting opening is provided in the middle of the support plate (4), the mounting opening penetrates the support plate (4), and the sleeve (7) is installed in the mounting opening; The vibration damping seat (10) is arranged at a distance from the support plate (4) in the vertical direction, and the vibration damping seat (10) surrounds the sleeve (7); The vibration-damping joint is located between the sleeve (7) and the vibration-damping seat (10), and the sleeve (7) is connected to the vibration-damping seat (10) via the vibration-damping joint, and the vibration-damping joint is used to convert the lateral vibration of the rotating shaft (11) into the vertical vibration of the outer edge of the vibration-damping seat (10); The outer edge of the vibration-damping seat (10) is connected to the support plate (4) via an elastic member (3); the elastic member (3) can elastically expand and contract in a vertical direction; the elastic member (3) is used to remove the vertical vibration of the outer edge of the vibration-damping seat (10).

2. The device according to claim 1, characterized in that The vibration-damping joint comprises a first joint part (8) and a second joint part (9), wherein the first joint part (8) is sleeved on the sleeve (7), the second joint part (9) surrounds the outer side of the first joint part (8), and the second joint part is connected to the vibration-damping seat (10); A first spherical surface is provided on the outer side of the first joint part (8), and a second spherical surface is provided on the inner side of the second joint part (9). The second spherical surface abuts against the first spherical surface. When the rotating shaft (11) vibrates laterally, the second spherical surface rolls relative to the first spherical surface, so that the second joint part (9) and the vibration-damping seat (10) swing.

3. The device according to claim 2, characterized in that A first fitting surface is provided on the inner side of the first joint portion (8), the first fitting surface is an annular surface, the shape of the first fitting surface is adapted to the shape of the outer wall of the sleeve (7), and the first fitting surface fits the outer wall of the sleeve (7). A second fitting surface is provided on the outer side of the second joint portion (9); the second fitting surface is an annular surface; the shape of the second fitting surface is adapted to the shape of the inner side wall of the vibration damping seat (10); the second fitting surface fits the inner side wall of the vibration damping seat (10).

4. The device according to claim 3, characterized in that The vibration-damping seat (10) is located below the support plate (4), and the vibration-damping seat (10) comprises a surrounding portion and a connecting portion, the surrounding portion surrounds the sleeve (7), the upper end of the surrounding portion is connected to the connecting portion, the connecting portion extends outward in a horizontal direction, and the outer end edge of the connecting portion is connected to the support plate (4) through an elastic member (3); An accommodating groove is provided between the inner wall of the surrounding portion and the outer wall of the sleeve (7), and the vibration-damping joint is accommodated in the accommodating groove.

5. The device according to claim 4, characterized in that A supporting portion is provided at the lower end of the surrounding portion. The supporting portion extends inwardly along a horizontal direction and is used to support the vibration-reducing joint.

6. The device according to claim 5, characterized in that There is an avoidance gap between the inner edge of the support portion and the outer wall of the sleeve (7), so that the second joint portion (9) can drive the vibration damping seat (10) to swing.

7. The device according to claim 1, characterized in that It also includes a fixed bracket (2) and a damper (5), wherein the support plate (4) is connected to the fixed bracket (2) via the damper (5), and the damper (5) extends in the vertical direction and is used to cooperate with the elastic member (3) to remove the vibration of the outer edge of the vibration-damping seat (10) in the vertical direction.

8. The device according to claim 1, characterized in that The elastic member comprises a guide connecting rod (17) and a vibration-damping block, wherein the vibration-damping block is placed above the support plate (4). The guide link (17) extends in the vertical direction and passes through the connecting parts of the vibration damping block (31), the support plate (4) and the vibration damping seat (10) in sequence. The two ends of the guide link (17) are respectively provided with a first clamping member (18) and a second clamping member (19). The first clamping member (18) is located above the vibration damping block (31) and is connected to the upper end of the guide link (17). The second clamping member (19) is located below the connecting part of the vibration damping seat (10) and is connected to the lower end of the guide link (17). The first clamping member (18) and the second clamping member (19) cooperate to clamp and connect the vibration damping block (31), the support plate (4) and the connecting part.

9. The device according to claim 8, characterized in that There are a plurality of vibration-damping blocks (31), which are arranged along the axial direction of the guide connecting rod, and a gasket is provided between two adjacent vibration-damping blocks (31).

10. The device according to claim 8 or 9, characterized in that The vibration damping block (31) is a rubber vibration damping block.

11. A high-speed rotation system, characterized in that: The invention comprises a rotating device and a vibration reduction device for the rotating device according to any one of claims 1 to 10, wherein the rotating device comprises a rotating device drive motor (1), a rotating shaft (11) and a rotating chamber, wherein the output end of the drive motor (1) is connected to the rotating chamber via the rotating shaft (11), and the vibration reduction device for the rotating device is connected to the rotating shaft (11) for reducing vibration of the rotating shaft (11).

12. The high-speed rotation system according to claim 11, characterized in that: The invention comprises a first area, a second area and a cover plate (6), wherein the cover plate (6) is located between the first area and the second area, the drive motor (1) is located in the first area, the rotation chamber is located in the second area, the rotation shaft (11) passes through the cover plate (6), and the drive motor (1) is connected to the rotation chamber via the rotation shaft (11). A liquid container is placed in the second area. Radioactive liquid is stored in the liquid container. The liquid container is connected to the rotating chamber and is used to transport the radioactive liquid into the rotating chamber.

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