Vibration damper for bearing seat of steam turbine generator unit

Abstract

The utility model discloses a damping device for a bearing seat of a steam turbine generator unit, which relates to the field of steam turbine generator units, is used for reducing the vibration amplitude of the bearing seat of the steam turbine generator unit, and comprises an annular mounting frame assembly, a mounting bottom plate, a tuned mass damper, a mounting cover plate, a counterweight mass block, a switching assembly and a pressing piece, the pressing piece is connected to an upper cover of the steam turbine generator unit bearing seat, the switching assembly is connected with the steam turbine generator unit bearing seat through the pressing piece, and the annular installation frame assembly is connected with the switching assembly. The mounting bottom plate, the tuned mass damper, the mounting cover plate and the counterweight mass block are sequentially connected above the annular mounting frame assembly from bottom to top. The device can be rapidly installed and implemented, and the number of the tuned mass dampers and the number of the counterweight mass blocks can be adjusted according to the actual vibration condition of equipment, so that the fault problem of equipment vibration is solved.

Description

Technical Field

[0001] The utility model relates to the field of steam turbine generator sets, in particular to a vibration reduction device for a bearing seat of a steam turbine generator set. Background Art

[0002] Bearings are an important component in mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. The bearing seat is used to install and fix the bearing and can withstand a certain support force. Almost all places with bearings involve bearing seats. There are many different types, compact structure, sensitive rotation, easy maintenance and other characteristics. The bearing seat is a device that bears the torque of the rotating shaft during rotation. The rotating shaft will generate different degrees of vibration when rotating. The junction between the bearing and the bearing seat will vibrate, which makes it very easy for the bearing seat and the bearing to twist each other when used under vibration.

[0003] The vibration problem of the bearing seat of the steam turbine generator set is a major problem in the power industry. The vibration problem not only affects the normal operation of the steam turbine generator set, but may also cause equipment damage and production accidents. At present, the industry generally treats the vibration of the bearing seat of the steam turbine generator set through dynamic balancing correction, adjusting bearing clearance, replacing parts and other measures, which is time-consuming and labor-intensive and has not achieved good treatment results. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a vibration reduction device for a bearing seat of a steam turbine generator set in view of the deficiencies of the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A steam turbine generator bearing seat vibration reduction device, used to reduce the vibration amplitude of the steam turbine generator bearing seat, includes an annular mounting frame assembly, a mounting base plate, a tuned mass damper, a mounting cover plate, a counterweight mass block, an adapter assembly and a clamping piece; the clamping piece is connected to the upper cover of the steam turbine generator bearing seat, the adapter assembly is connected to the steam turbine generator bearing seat through the clamping piece, the annular mounting frame assembly is connected to the adapter assembly, and the mounting base plate, the tuned mass damper, the mounting cover plate and the counterweight mass block are sequentially connected above the annular mounting frame assembly from bottom to top.

[0007] The utility model adopts an annular mounting frame assembly, a mounting base plate, a tuned mass damper, a mounting cover plate, a counterweight mass block, a switching assembly and a clamping piece to be connected with each other in cooperation, can be quickly installed and implemented, and the number of the tuned mass damper and the counterweight mass block can be adjusted according to the actual vibration conditions of the equipment to solve the problem of equipment vibration failure.

[0008] As a further preferred embodiment of the present invention, the annular mounting frame assembly includes a first annular mounting frame, a second annular mounting frame, a connecting piece and a connecting rod; the first annular mounting frame and the second annular mounting frame are both provided with corresponding connecting holes, and the first annular mounting frame and the second annular mounting frame are connected through the connecting piece passing through the connecting hole, and the first annular mounting frame is also provided with a first threaded hole, a second threaded hole and a slotted hole, the connecting rod passes through the first threaded hole to connect the first annular mounting frames on both sides of the bearing seat of the steam turbine generator set, and the first annular mounting frame is connected to the adapter assembly through the slotted hole, the second threaded hole is opened at the top of the first annular mounting frame, and the first annular mounting frame is connected to the mounting base plate through the second threaded hole.

[0009] As a further preferred embodiment of the present invention, the top surface of the first annular mounting frame is a plane and the bottom surface is an arc surface; the bottom of the second annular mounting frame is a toothed structure.

[0010] As a further preferred embodiment of the utility model, the adapter assembly includes a first adapter and a second adapter; the first adapter is a convex structure and has a plurality of connection holes, and the first adapter is respectively connected to the first annular mounting frame, the mounting base plate and the clamping member through the connection holes; the second adapter is a cross structure and has a plurality of connection holes, and the second adapter is respectively connected to the mounting base plate, the first annular mounting frame and the clamping member through the connection holes. The connection holes can be either round holes or threaded holes, preferably threaded holes, which can be easily disassembled while being tightened, and the first adapter and the second adapter are respectively connected to the first annular mounting frame, the mounting base plate and the clamping member by passing the connection members through the corresponding connection holes.

[0011] As a further preferred embodiment of the utility model, a plurality of connecting holes and slot-shaped holes are provided on the mounting base plate; the mounting base plate is connected to the adapter assembly through the slot-shaped holes, and is respectively connected to the annular mounting frame assembly and the tuned mass damper through the connecting holes, and a U-shaped through groove is provided on the mounting base plate.

[0012] As a further preferred embodiment of the present invention, the mounting base plate has a plurality of connection holes in the longitudinal or transverse direction, and a plurality of tuned mass dampers arranged in different directions can be installed. The number, installation position and direction of the tuned mass dampers can be adjusted, and the base plate can be installed in different X or Y directions. Similarly, the number of counterweight mass blocks can be selected as needed.

[0013] As a further preferred embodiment of the present invention, the clamping piece is a U-shaped structure, fixedly connected to the upper cover of the steam turbine generator bearing seat, and a slot and a connecting hole are provided on the clamping piece. The adapter assembly is connected to the clamping piece through the connecting hole, and the bottom of the adapter assembly is arranged in the slot of the clamping piece.

[0014] As a further preferred embodiment of the present invention, both ends of the connecting rod are provided with threads, and the threads of the connecting rod pass through the first threaded hole to connect the first annular mounting frames on both sides of the bearing seat of the steam turbine generator set.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model adopts an annular mounting frame assembly, a mounting base plate, a tuned mass damper, a mounting cover plate, a counterweight mass block, a switching assembly and a clamping member to cooperate with each other and can be quickly installed and implemented. The number of the tuned mass damper and the counterweight mass block can be adjusted according to the actual vibration conditions of the equipment to solve the problem of equipment vibration failure.

[0017] 2. The utility model is easy to implement, has little impact on the original structure of the vibration reduction target equipment, and reduces the difficulty of vibration reduction work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 , 2 This is a structural diagram of an implementation of the utility model;

[0019] Figure 3 This is a schematic diagram of a first annular mounting frame of the utility model;

[0020] Figure 4 This is a schematic diagram of a second annular mounting frame of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation base plate of the utility model;

[0022] Figure 6 It is a front schematic diagram of the tuned mass damper of the utility model;

[0023] Figure 7 It is a schematic diagram of the reverse side of the tuned mass damper of the utility model;

[0024] Figure 8 This is a schematic diagram of the installation cover of the utility model;

[0025] Fig. 9 A schematic diagram of a counterweight mass block is shown;

[0026] Fig.10 , 11 This is a schematic diagram of the first adapter of the utility model;

[0027] Fig.12 This is a schematic diagram of the second adapter of the utility model;

[0028] Fig.13 It is a schematic diagram of the connecting rod of the utility model;

[0029] Fig.14It is a schematic diagram of the pressing member of the utility model.

[0030] Among them are: 1. first annular mounting frame; 101. first connecting hole; 102. first threaded hole; 103. second threaded hole; 2. second annular mounting frame; 3. mounting base plate; 301. fifth connecting hole; 302. sixth connecting hole; 4. tuned mass damper; 5. mounting cover plate; 501. eighth connecting hole; 502. ninth connecting hole; 6. counterweight mass block; 7. first adapter; 8. second adapter; 9. connecting hole; 10. connecting rod; 1001. thread; 11. clamping piece; 1101. seventh connecting hole; 12. slotted hole; 13. second connecting hole; 14. third connecting hole; 15. fourth connecting hole. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0032] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0033] like Figure 1-14 As shown, a steam turbine generator set bearing seat vibration reduction device is used to reduce the vibration amplitude of the steam turbine generator set bearing seat, including an annular mounting frame assembly, a mounting base plate 3, a tuned mass damper 4, a mounting cover plate 5, a counterweight mass block 6, an adapter assembly and a clamping piece 11; the clamping piece 11 is connected to the upper cover of the steam turbine generator set bearing seat, the adapter assembly is connected to the steam turbine generator set bearing seat through the clamping piece 11, the annular mounting frame assembly is connected to the adapter assembly, and the mounting base plate 3, the tuned mass damper 4, the mounting cover plate 5 and the counterweight mass block 6 are sequentially connected above the annular mounting frame assembly from bottom to top.

[0034] The utility model adopts an annular mounting frame assembly, a mounting base plate 3, a tuned mass damper 4, a mounting cover plate 5, a counterweight mass block 6, a switching assembly and a clamping member 11, which are connected to each other in a coordinated manner, can be quickly installed and implemented, and the number of the tuned mass damper 4 and the counterweight mass block 6 can be adjusted according to the actual vibration conditions of the equipment to solve the problem of equipment vibration failure.

[0035] The annular mounting frame assembly includes a first annular mounting frame 1, a second annular mounting frame 2, a connecting piece and a connecting rod 10; the first annular mounting frame 1 and the second annular mounting frame 2 are both provided with corresponding first connecting holes 101, and the first annular mounting frame 1 and the second annular mounting frame 2 are connected through the connecting piece through the first connecting hole 101, and the first annular mounting frame 1 is also provided with a first threaded hole 102, a second threaded hole 103 and a slotted hole 12, and the connecting rod 10 connects the first annular mounting frames 1 on both sides of the steam turbine generator bearing seat through the first threaded hole 102, and the first annular mounting frame 1 is connected to the adapter assembly through the slotted hole 12, and the second threaded hole 103 is provided at the top of the first annular mounting frame 1, and the first annular mounting frame 1 is connected to the mounting base plate 3 through the second threaded hole 103. After the first annular mounting frame 1 is connected to the second annular mounting frame 2, it is connected to the connecting rod 10 to form an annular mounting frame assembly, which is initially fixed on the upper cover of the steam turbine generator bearing. The top surface of the first annular mounting frame 1 is a plane and the bottom surface is an arc surface; the bottom of the second annular mounting frame 2 is a tooth-shaped structure.

[0036] The adapter assembly includes a first adapter 7 and a second adapter 8; the first adapter 7 is a convex structure and is provided with a plurality of connection holes 9, through which the first adapter 7 is respectively connected to the first annular mounting frame 1, the mounting base plate 3 and the pressing member 11; the second adapter 8 is a cross structure and is provided with a plurality of connection holes 9, through which the second adapter 8 is respectively connected to the mounting base plate 3, the first annular mounting frame 1 and the pressing member 11. The connection holes 9 of the first adapter 7 and the second adapter 8 include a second connection hole 13, a third connection hole 14 and a fourth connection hole 15, and the first adapter 7 and the second adapter 8 are connected to the mounting base plate 3 through the second connection hole 13, connected to the first annular mounting frame 1 through the third connection hole 14, and connected to the pressing member 11 through the fourth connection hole 15.

[0037] The connecting hole 9 can be either a round hole or a threaded hole, preferably a threaded hole, which can be easily disassembled while being tightened. The first adapter 7 and the second adapter 8 are respectively connected to the first annular mounting frame 1, the mounting base plate 3 and the clamping member 11 by passing the connecting member through the corresponding connecting hole 9.

[0038] The mounting base plate 3 is provided with a plurality of connection holes 9 and slot holes 12; the mounting base plate 3 is connected to the adapter assembly through the slot holes 12, and is respectively connected to the annular mounting frame assembly and the tuned mass damper 4 through the connection holes 9, and a U-shaped through groove is provided on the mounting base plate 3. The connection holes 9 on the mounting base plate 3 include a fifth connection hole 301 and a sixth connection hole 302, the mounting base plate 3 is connected to the tuned mass damper 4 through the fifth connection hole 301, and the tuned mass damper 4 is provided with a corresponding connection hole 9, and the mounting base plate 3 is connected to the second threaded hole 103 at the top of the first annular mounting frame 1 through the sixth connection hole 302.

[0039] The connection holes 9 on the mounting base plate 3 are provided in a plurality of directions in the longitudinal or transverse direction, so that a plurality of tuned mass dampers 4 arranged in different directions can be installed. The number, installation position and direction of the tuned mass dampers 4 can be adjusted, and the base plate 3 can be installed in different X or Y directions. Similarly, the number of counterweight mass blocks 6 can be selected as required.

[0040] The clamping piece 11 is a U-shaped structure, fixedly connected to the upper cover of the steam turbine generator bearing seat, and is provided with a slot and a seventh connecting hole 1101. The adapter assembly is connected to the clamping piece through the seventh connecting hole 1101, and the bottom of the adapter assembly is arranged in the slot of the clamping piece 11.

[0041] The mounting cover plate 5 is provided with an eighth connecting hole 501 and a ninth connecting hole 502. The mounting cover plate 5 is connected to the tuned mass damper 4 via the eighth connecting hole 501, and the tuned mass damper 4 is provided with a corresponding connecting hole 9; the mounting cover plate 5 is connected to the counterweight mass block 6 via the ninth connecting hole 502, and the counterweight mass block 6 is provided with a corresponding connecting hole 9.

[0042] Both ends of the connecting rod 10 are provided with threads 1001 , and the threads 1001 of the connecting rod 10 pass through the first threaded hole 102 to connect the first annular mounting frames 1 on both sides of the bearing seat of the steam turbine generator set.

[0043] Installation method of the utility model:

[0044] First, the pressing piece 11 is fixed to both sides of the bearing seat of the steam turbine generator set, and then the adapter assembly is connected to it, and then the assembled annular mounting frame assembly is connected to the adapter assembly, and then the installation base plate 3, the tuned mass damper 4, the installation cover plate 5 and the counterweight mass block 6 are sequentially connected to the top of the annular mounting frame assembly from bottom to top, and the number, installation position and direction of the tuned mass damper 4 can be adjusted, and the base plate 3 is installed in different X or Y directions. Similarly, the number of counterweight mass blocks 6 can be selected as needed.

[0045] The utility model adopts an annular mounting frame assembly, a mounting base plate 3, a tuned mass damper 4, a mounting cover plate 5, a counterweight mass block 6, a switching assembly and a clamping member 11, which are connected to each other in a coordinated manner, can be quickly installed and implemented, and the number of the tuned mass damper 4 and the counterweight mass block 6 can be adjusted according to the actual vibration conditions of the equipment to solve the problem of equipment vibration failure.

[0046] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A steam turbine generator bearing seat vibration reduction device, used to reduce the vibration amplitude of the steam turbine generator bearing seat, characterized in that: The invention comprises an annular mounting frame assembly, an installation base plate (3), a tuned mass damper (4), an installation cover plate (5), a counterweight mass block (6), an adapter assembly and a pressing piece (11); the pressing piece (11) is connected to the upper cover of the bearing seat of the steam turbine generator set, the adapter assembly is connected to the bearing seat of the steam turbine generator set through the pressing piece (11), the annular mounting frame assembly is connected to the adapter assembly, and the installation base plate (3), the tuned mass damper (4), the installation cover plate (5) and the counterweight mass block (6) are sequentially connected above the annular mounting frame assembly from bottom to top.

2. A steam turbine generator bearing seat vibration reduction device according to claim 1, characterized in that: The annular mounting frame assembly comprises a first annular mounting frame (1), a second annular mounting frame (2), a connecting piece and a connecting rod (10); the first annular mounting frame (1) and the second annular mounting frame (2) are both provided with corresponding connecting holes (9); the first annular mounting frame (1) and the second annular mounting frame (2) are connected via the connecting piece passing through the connecting hole (9); the first annular mounting frame (1) is also provided with a first threaded hole (102), a second threaded hole (103) and a slotted hole (12); the connecting rod (10) passes through the first threaded hole (102) to connect the first annular mounting frames (1) on both sides of the bearing seat of the steam turbine generator set; the first annular mounting frame (1) is connected to the adapter assembly via the slotted hole (12); the second threaded hole (103) is provided at the top of the first annular mounting frame (1); the first annular mounting frame (1) is connected to the mounting base plate (3) via the second threaded hole (103).

3. A steam turbine generator bearing seat vibration reduction device according to claim 2, characterized in that: The top surface of the first annular mounting frame (1) is a plane and the bottom surface is an arc surface; the bottom of the second annular mounting frame (2) is a toothed structure.

4. A steam turbine generator bearing seat vibration reduction device according to claim 2, characterized in that: The adapter assembly comprises a first adapter (7) and a second adapter (8); the first adapter (7) is a convex structure and is provided with a plurality of connection holes (9), and the first adapter (7) is respectively connected to the first annular mounting frame (1), the mounting base plate (3) and the pressing member (11) through the connection holes (9); the second adapter (8) is a cross structure and is provided with a plurality of connection holes (9), and the second adapter (8) is respectively connected to the mounting base plate (3), the first annular mounting frame (1) and the pressing member (11) through the connection holes (9).

5. The steam turbine generator bearing seat vibration reduction device according to claim 1, characterized in that: The mounting base plate (3) is provided with a plurality of connection holes (9) and slot holes (12); the mounting base plate (3) is connected to the adapter assembly via the slot holes (12), and is respectively connected to the annular mounting frame assembly and the tuned mass damper (4) via the connection holes (9), and a U-shaped through groove is provided on the mounting base plate (3).

6. A steam turbine generator bearing seat vibration reduction device according to claim 5, characterized in that: A plurality of connection holes (9) are provided on the installation base plate (3) in the longitudinal direction or the transverse direction, and a plurality of tuned mass dampers (4) arranged in different directions can be installed.

7. A steam turbine generator bearing seat vibration reduction device according to claim 1, characterized in that: The clamping member (11) is a U-shaped structure, fixedly connected to the upper cover of the steam turbine generator bearing seat, and the clamping member (11) is provided with a slot and a connecting hole (9), the adapter assembly is connected to the clamping member (11) via the connecting hole (9), and the bottom of the adapter assembly is arranged in the slot of the clamping member (11).

8. The steam turbine generator bearing seat vibration reduction device according to claim 2, characterized in that: Both ends of the connecting rod (10) are provided with threads (1001), and the threads (1001) of the connecting rod (10) pass through the first threaded hole (102) to connect the first annular mounting frames (1) on both sides of the bearing seat of the steam turbine generator set.

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