CN220581597U

CN220581597U - Device for rotor system to load equivalent damping to play vibration reduction role

Info

Publication number: CN220581597U
Application number: CN202321795140.3U
Authority: CN
Inventors: 曾礼平; 湛可翔; 丁孺琦; 李刚; 胡国良; 李路平; 王忠申
Original assignee: East China Jiaotong University
Current assignee: East China Jiaotong University
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-03-12
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to a device for loading equivalent damping, in particular to a device for loading equivalent damping of a rotor system to play a role in vibration reduction, which consists of lateral fixing screws, an upper box body, a lower box body, a hole cover, an impeller, a shaft, a bearing, upper and lower fixing screws and a bearing end cover, wherein the upper box body and the lower box body are fixed by the upper and lower fixing screws to form a box body, damping liquid is required to be injected into the box body, the impeller is arranged on the shaft in a welding mode, the bearing is sleeved on the shaft and is arranged at two ends of the box body, the bearing end cover is arranged outside the bearing and is used for fixing the bearing, the lateral fixing screws are arranged on the bearing end cover to fix the bearing end cover, the upper box body is provided with a liquid inlet hole, and the hole cover is used for sealing. The device with the vibration reduction function is directly externally connected with the equivalent damping in the rotor, and damping liquid in the box body has the resistance moment function on the impeller on the shaft, so that the effect of applying the equivalent damping can be achieved, and the purpose of rapidly and continuously reducing the vibration of a rotor system is realized.

Description

Device for rotor system to load equivalent damping to play vibration reduction role

Technical Field

The utility model belongs to the technical field of damping vibration attenuation, and particularly relates to a device for absorbing vibration by loading equivalent damping of a rotor system.

Background

Vibration problems are common in some high speed rotating machines such as automotive engines, turbo pumps, gas turbines, and the like. Typically, the rotor operating speed will reach above a first order threshold speed. When the rotor starts and stops or the variable working condition operation reaches the critical rotation speed, the rotor system can generate strong vibration, and the rotor can be possibly bent and collided, and even the safe operation of the mechanical system is influenced.

The utility model relates to a device for loading equivalent damping to play a role in vibration reduction, which is characterized in that the device is externally connected to a rotor system, has a simple structure and is convenient to install, disassemble and maintain.

Disclosure of Invention

The utility model improves the structure, and designs a device for directly loading equivalent damping in a rotor system to realize vibration reduction.

In order to achieve the above object, the present utility model provides a device for loading equivalent damping of a rotor system to play a role of vibration reduction, comprising: lateral fixing screw, last box, lower box, handhole door, impeller, axle, bearing, upper and lower fixing screw and bearing end cover, its characterized in that: the upper box body and the lower box body of the damping device are fixed by upper and lower fixing screws to form a box body, an impeller penetrates through a shaft and is fixed on the shaft in a welding mode, a bearing sleeve is sleeved on the shaft and is installed at two ends of the box body, a bearing end cover is installed outside the bearing and fixes the bearing, lateral fixing screws are installed on the bearing end cover to fix the bearing end cover, a liquid inlet hole is formed in the upper box body, and the bearing end cover is sealed by a hole cover with threads.

As a further improvement of the scheme, four through holes are formed in the boss below the upper box body, four threaded holes are formed in the boss above the lower box body, and the upper box body and the lower box body are fixed together by using upper and lower fixing screws to form the box body.

As a further improvement of the scheme, the impeller is provided with eight blades, a through hole is formed in the middle of the impeller, and the shaft penetrates through the through hole of the impeller and is welded together.

As a further improvement of the scheme, the bearing is arranged on the shaft and arranged at two ends of the box body, through holes with the same size as the outer ring of the bearing are formed in the two ends of the box body, and the bearing is fixed through the shaft shoulder and the bearing end cover.

As a further improvement of the scheme, through holes with the same diameters as the two ends of the shaft are formed in the middle of the bearing end cover, six through holes are formed in the flange of the bearing end cover and are used for installing lateral fixing screws, and the bearing end cover is installed on the box body through the lateral fixing screws.

As a further improvement of the scheme, a certain amount of damping liquid is injected into the box body, the impeller and the damping liquid are stirred, and the rotor system obtains equivalent damping, so that vibration reduction is realized.

As a further improvement of the scheme, the upper box body is provided with a liquid inlet hole, so that liquid can be replaced, and the upper box body is sealed by a hole cover with threads.

Compared with the existing mode of arranging the extrusion damping liquid film damper in the rotor supporting device, the utility model has the advantages that the damping liquid in the box body has the action of resisting moment on the impeller on the shaft through directly externally connecting the device with equivalent damping to play a role in vibration reduction in the rotor, and the effect of applying equivalent damping can be achieved, thereby realizing the purpose of rapidly and continuously reducing the vibration of the rotor system. The utility model can be directly and externally arranged on the rotor system, and is simple and convenient to operate.

Drawings

Fig. 1 is a general two-dimensional view of the present utility model.

Fig. 2 is a generally three-dimensional exploded view of the present utility model.

Fig. 3 is a three-dimensional view of an impeller employed in the present utility model.

Detailed Description

In order to more clearly illustrate the technical scheme of the utility model, the conception and specific structure of the utility model are specifically described below with reference to the drawings.

As shown in fig. 1, a device for loading equivalent damping of a rotor system for vibration reduction, which is designed by the utility model, comprises: lateral fixing screw (1), bearing (2), go up box (3), handhole door (4), bearing end cover (5), go up about set screw (6), lower box (7), axle (8) and impeller (9), its characterized in that: the damping device is characterized in that an upper box body (3) and a lower box body (7) of the damping device are fixed by upper and lower fixing screws (6) to form a box body, an impeller (9) penetrates through a shaft (8) and is fixed on the shaft (8) in a welding mode, a bearing (2) is sleeved on the shaft (8) and is arranged at two ends of the box body, a bearing end cover (5) is arranged outside the bearing (2) and fixes the bearing (2), a lateral fixing screw (1) is arranged on the bearing end cover (5) to fix the bearing end cover (5), a liquid inlet hole is formed in the upper box body (3), and the bearing is sealed by a hole cover (4) with threads.

Four through holes are formed in the boss below the upper box body (3), four threaded holes are formed in the boss above the lower box body (7), and the upper box body (3) and the lower box body (7) are fixed together through upper and lower fixing screws (6) to form the box body.

The impeller (9) is provided with eight blades, a through hole is formed in the middle of the impeller, and the shaft (8) penetrates through the through hole of the impeller (9) and is welded together.

The bearing (2) is arranged on the shaft (8) and arranged at two ends of the box body, through holes with the same size as the outer ring of the bearing (2) are formed in the two ends of the box body, and the bearing (2) is fixed through the shaft shoulder and the bearing end cover (5).

The bearing end cover (5) is provided with through holes with the same diameter as the two ends of the shaft (8) in the middle, and six through holes are formed in the flange of the bearing end cover (5) and used for installing lateral fixing screws (1), and the bearing end cover (5) is installed on the box body through the lateral fixing screws (1).

And a certain amount of damping liquid is injected into the box body, and the impeller (9) and the damping liquid are stirred, so that the rotor system obtains equivalent damping, and vibration reduction is realized.

The upper box body (3) is provided with a liquid inlet hole, so that liquid can be replaced, and the upper box body is sealed by a hole cover (4) with threads.

In specific implementation, the device for damping by equivalent damping is directly externally connected in the rotor, and damping liquid in the box body has the action of resisting moment on the impeller (9) on the shaft (8), so that the effect of applying equivalent damping can be achieved, and the purpose of rapidly and continuously reducing the vibration of a rotor system is realized. The utility model can be directly and externally arranged on the rotor system, and is simple and convenient to operate.

Claims

1. The device for loading equivalent damping of a rotor system to play a role in vibration reduction is characterized in that: including side direction set screw (1), bearing (2), go up box (3), handhole door (4), bearing end cover (5), upper and lower set screw (6), lower box (7), axle (8) and impeller (9), it is fixed through upper and lower set screw (6) to go up box (3) and lower box (7), constitute the box, impeller (9) pass axle (8) and are fixed in on axle (8) with welded mode, bearing (2) cover is installed on axle (8) and is installed the both ends at the box, bearing end cover (5) are installed outside bearing (2) and are fixed bearing (2), side direction set screw (1) are fixed bearing end cover (5) on the box, on the feed liquor hole of last box (3) is arranged in handhole door (4).

2. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 1, wherein: four through holes are formed in the boss below the upper box body (3), four threaded holes are formed in the boss above the lower box body (7), and the upper box body (3) and the lower box body (7) are fixed together through upper and lower fixing screws (6) to form the box body.

3. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 1, wherein: the impeller (9) is provided with eight blades, a through hole is formed in the middle of the impeller, and the shaft (8) penetrates through the through hole of the impeller (9) and is welded together.

4. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 1, wherein: the bearing (2) is arranged on the shaft (8) and arranged at two ends of the box body, through holes with the same size as the outer ring of the bearing (2) are formed in the two ends of the box body, and the bearing (2) is fixed through the shaft shoulder and the bearing end cover (5).

5. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 1, wherein: the bearing end cover (5) is provided with through holes with the same diameter as the two ends of the shaft (8) in the middle, and six through holes are formed in the flange of the bearing end cover (5) and used for installing lateral fixing screws (1), and the bearing end cover (5) is installed on the box body through the lateral fixing screws (1).

6. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 2, wherein: and a certain amount of damping liquid is injected into the box body.

7. A rotor system loaded equivalent damping vibration attenuation device as set forth in claim 1, wherein: the upper box body (3) is provided with a liquid inlet hole, and is sealed by a hole cover (4) with threads.