Multi-directional Vibration Reduction Device and Method for Pipelines Based on Particle Damping

Abstract

This application relates to the field of vibration control in civil engineering, and provides a multi-directional vibration reduction device and method for pipelines based on particle damping. The device includes: an annular component installed on the outside of the pipeline; multiple particle dampers spaced circumferentially along the annular component; each particle damper includes a container and particles filled within the container; multiple translational guide devices spaced circumferentially along the annular component; devices for guiding the particle dampers to translate radially along the annular component; and an energy-dissipating spring connected between the annular component and the container of the particle damper. This invention guides the particle dampers to translate radially along the annular component using translational guide devices, and achieves multi-directional vibration reduction for the pipeline through energy dissipation via frictional collisions of the particles in the dampers and energy dissipation through deformation of the energy-dissipating spring. It is applicable not only to transverse pipelines but also to vertical pipelines.

Description

Technical Field

[0001] This invention belongs to the field of vibration control technology in civil engineering, specifically relating to a multi-directional vibration reduction device and method for pipelines based on particle damping. Background Technology

[0002] With the rapid development of modern technology, especially in high-tech products such as electronics and nanotechnology, the requirements for factory vibration environments are becoming increasingly stringent. Pipelines such as water pipes and air ducts generate vibrations during operation. Particularly for shared pipe rack systems, if the vibrations generated by the piping system are not effectively controlled, these vibrations will be transmitted to related factory structures, affecting the operating status of production equipment in electronics factories, especially process equipment requiring low-vibration precision. Therefore, low-vibration control of piping in electronics factories has become a key technology in the construction of high-tech factories.

[0003] To avoid the negative impact of pipeline vibration on the operation of electronics factories, a series of measures need to be taken, such as modifying the pipeline structure and adding vibration damping components such as supports and buffers. Among these, hydraulic viscous dampers are commonly used for pipeline vibration control. However, supports and hydraulic viscous dampers are mainly suitable for horizontal pipelines, with fewer vibration damping measures for vertical pipelines. Furthermore, hydraulic viscous dampers are prone to oil leakage, aging, and have a limited vibration damping frequency band. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and propose a multi-directional vibration reduction device and method for pipelines based on particle damping, which is applicable not only to horizontal pipelines but also to vertical pipelines, and can achieve multi-directional vibration reduction of pipelines.

[0005] In a first aspect, the present invention provides a multi-directional vibration reduction device for pipelines based on particle damping, comprising: an annular member installed on the outside of a pipeline, the annular member having an annular cavity surrounding the pipeline; a plurality of particle dampers spaced apart circumferentially within the annular cavity; each particle damper comprising a container and particles filled within the container; a plurality of translational guiding devices spaced apart circumferentially on the annular member; each of the plurality of translational guiding devices being connected one-to-one with the containers of the plurality of particle dampers for guiding the particle dampers to translate radially along the annular member; and an energy-dissipating spring connected between the annular member and the containers of the particle dampers.

[0006] Furthermore, the multi-directional vibration damping device for the pipeline also includes a plurality of eddy current vibration damping and energy dissipation devices arranged circumferentially along the annular member; the eddy current vibration damping and energy dissipation devices include: partitions, which are spaced apart on both sides of the particle vibration damper along the circumferential direction of the annular member; permanent magnets, which are disposed on the partitions on both sides of the particle vibration damper to generate a magnetic field passing through the particle vibration damper; and conductor plates, which are connected to the container of the particle vibration damper and move in a direction perpendicular to the magnetic field to generate eddy currents.

[0007] By setting a conductor plate connected to the container, the conductor plate moves with the particle vibration damper to cut the magnetic field of the permanent magnet, thereby forming eddy currents in the conductor plate and generating heat under the action of the conductor plate's own resistance. As the heat dissipates, the energy is consumed, thus improving the vibration damping and energy consumption effect of the vibration damping device.

[0008] Furthermore, the conductor plate is disposed inside the container of the particle damper, dividing the internal cavity of the container into at least two sub-cavities, each of which contains the particles.

[0009] By placing the conductor plate inside the container, it not only has the energy dissipation effect of an eddy current vibration damping energy dissipation device, but also divides the container of the particle vibration damper into more sub-cavities to improve the friction and collision energy dissipation effect of the particle vibration damper.

[0010] Furthermore, the multi-directional vibration damping device for the pipeline also includes an actuator; the actuator is disposed on at least one partition on both sides of the particle vibration damper, and is used to drive the two partitions of the particle vibration damper to move closer together or further apart.

[0011] By adjusting the distance between the baffles on both sides of the particle vibration damper using an actuator, the eddy current damping force can be adjusted, thus making it suitable for vibration reduction and energy dissipation of pipelines with different vibration intensities.

[0012] Furthermore, the multi-directional vibration damping device for the pipeline also includes an acceleration sensor and a controller; the acceleration sensor is installed on the outside of the pipeline and is used to collect the acceleration signal of the pipeline vibration; the controller is electrically connected to the acceleration sensor and the actuator, and based on the acceleration signal, the controller sends a control command to the actuator to drive the partitions on both sides of the particle vibration damper to move closer or further apart.

[0013] Furthermore, the top of the annular member is provided with an arc-shaped opening arranged circumferentially; the top of the partition is provided with a hook portion, which passes through the arc-shaped opening and is suspended from the top of the annular member; the actuator is provided on the top of the annular member to drive the partition to move along the arc length direction of the arc-shaped opening.

[0014] Furthermore, the annular component includes: a clamp, installed on the outside of the pipe; and multiple fan-shaped shells, spliced ​​on the outside of the clamp along the circumference of the clamp, each fan-shaped shell including a fan-shaped top plate, a fan-shaped bottom plate, and an arc-shaped side plate disposed between the fan-shaped top plate and the fan-shaped bottom plate, the fan-shaped top plate, the fan-shaped bottom plate and the arc-shaped side plate enclosing to form a fan-shaped cavity, and the fan-shaped cavities of the multiple fan-shaped shells are distributed along the circumference of the clamp to form the annular cavity.

[0015] Furthermore, each of the translational guide devices includes a slide and a slider; the slide is radially disposed on the fan-shaped base plate along the annular member; the slider cooperates with the slide and is connected to the container of the particle damper.

[0016] Furthermore, the energy-dissipating spring includes an outer energy-dissipating spring and an inner energy-dissipating spring; the outer energy-dissipating spring connects the arc-shaped side plate and the container of the particle vibration damper; the inner energy-dissipating spring connects the clamp and the container of the particle vibration damper.

[0017] Secondly, the present invention also proposes a pipeline vibration reduction method based on particle damping, comprising the following steps: installing an annular member with an annular cavity on the outside of a pipeline; the annular cavity surrounding the pipeline; arranging multiple particle dampers at intervals along the circumference of the annular member inside the annular cavity; each particle damper comprising a container and particles filled within the container; arranging multiple translational guiding devices at intervals along the circumference of the annular member on the annular member; and connecting each of the multiple translational guiding devices to the container of the multiple particle dampers in a corresponding manner; connecting an energy-dissipating spring between the annular member and the container of the particle damper; when the pipeline vibrates, guiding the particle dampers to translate radially along the annular member using the translational guiding devices; achieving multi-directional vibration reduction of the pipeline by utilizing the mutual friction and collision of particles within the container of the particle damper and the compression and tension of the energy-dissipating spring; and adjusting the mass, size, and filling rate of the particles within the container of the particle damper according to the vibration reduction requirements.

[0018] The beneficial effects of this invention include:

[0019] 1. This invention utilizes multiple particle vibration dampers and multiple translational guide devices spaced circumferentially along an annular component installed on the outside of a pipeline. The translational guide devices guide the particle vibration dampers to translate radially along the annular component. Energy is dissipated through the friction and collision of the particles in the vibration dampers and the deformation of the energy-dissipating springs, thus achieving multi-directional vibration reduction for the pipeline. This invention is applicable not only to horizontal pipelines but also to vertical pipelines.

[0020] 2. By combining the eddy current vibration damping energy dissipation device with the particle vibration damper, multi-directional vibration reduction of the pipeline can be achieved. Compared with the traditional hydraulic viscous damper, there are no oil leakage and aging problems. There is no direct contact between the permanent magnet and the conductor plate, resulting in low starting friction and high sensitivity.

[0021] 3. Acceleration signals of pipeline vibration are collected in real time by an accelerometer. In conjunction with the actuator, the two side baffles of the particle vibration damper are driven to move closer or further apart, thereby adjusting the eddy current damping force and changing the damping effect of the eddy current vibration damping energy dissipation device to suit different vibration intensities and ensure pipeline safety. Attached Figure Description

[0022] Figure 1 This is a top view of the multi-directional vibration reduction device for pipelines based on particle damping, as described in this invention, installed outside the pipeline.

[0023] Figure 2 for Figure 1 A top-view schematic diagram of the internal structure of a multi-directional vibration reduction device for pipelines based on particle damping.

[0024] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional structure.

[0025] Figure 4 for Figure 2 Schematic diagram of the BB cross-section structure.

[0026] In the picture,

[0027] 10-Particle vibration damper; 11-Container; 12-Particle;

[0028] 20-Ring-shaped component; 21-Clamp; 22-Fan-shaped outer shell; 221-Fan-shaped top plate; 222-Fan-shaped bottom plate; 223-Arched side plate; 224-Arched opening;

[0029] 30 - Translation guide device; 31 - Slide rail; 32 - Slider;

[0030] 40 - Energy dissipation spring; 41 - Outer energy dissipation spring; 42 - Inner energy dissipation spring;

[0031] 50 - Eddy current vibration damping and energy dissipation device; 51 - Partition plate; 52 - Permanent magnet; 53 - Conductor plate;

[0032] 61-Actuator; 62-Acceleration sensor; 63-Controller;

[0033] 70 - Pipeline. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 , 2 The multi-directional vibration reduction device for pipelines based on particle damping shown includes: a ring-shaped component 20, multiple particle vibration dampers 10, multiple translational guide devices 30, multiple sets of energy-dissipating springs 40, and multiple eddy current vibration damping and energy-dissipating devices 50.

[0036] The annular member 20 is installed on the outside of the pipe 70 that requires vibration damping. The annular member 20 has an annular cavity surrounding the pipe 70. Specifically, the annular member 20 includes a clamp 21 and two sector-shaped housings 22.

[0037] The clamp 21 is installed on the outside of the pipe 70. The clamp 21 includes a left half-ring installed on the left side of the pipe 70 and a right half-ring installed on the right side of the pipe 70. The left and right half-rings are connected and fixed by fasteners, forming a complete ring-shaped clamp 21 that surrounds the outside of the pipe 70. The fasteners can be bolts or other connection structures.

[0038] Two fan-shaped shells 22 are spliced ​​to the outside of the clamp 21 along the circumference of the clamp 21. In fact, the ring-shaped component 20 can include more fan-shaped shells 22. Of course, the more fan-shaped shells 22 there are, the shorter their arc length. Multiple fan-shaped shells 22 are spliced ​​together along the circumference of the clamp 21 using fasteners to form a complete ring-shaped component 20.

[0039] Each sector-shaped outer shell 22 includes a sector-shaped top plate 221, a sector-shaped bottom plate 222, and an arc-shaped side plate 223 disposed between the sector-shaped top plate 221 and the sector-shaped bottom plate 222. The side of the sector-shaped top plate 221 and the sector-shaped bottom plate 222 closest to the clamp 21 or the pipe 70 is an inner arc edge, and the side of the sector-shaped top plate 221 and the sector-shaped bottom plate 222 furthest from the clamp 21 or the pipe 70 is an outer arc edge. The arc-shaped side plate 223 is disposed on the outer arc edge of the sector-shaped top plate 221 and the sector-shaped bottom plate 222. The height direction of the arc-shaped side plate 223 is parallel to the length direction of the pipe 70. The top of the arc-shaped side plate 223 is welded and fixed to the outer arc edge of the sector-shaped top plate 221, and the bottom of the arc-shaped side plate 223 is welded and fixed to the outer arc edge of the sector-shaped bottom plate 222.

[0040] Each sector-shaped outer shell 22 has a sector-shaped top plate 221, a sector-shaped bottom plate 222, and an arc-shaped side plate 223 enclosing a sector-shaped cavity. Multiple sector-shaped outer shells 22 have their sector-shaped cavities distributed circumferentially along the clamp 21 to form an annular cavity. The sector-shaped cavities of multiple sector-shaped outer shells 22 are interconnected, forming a circumferentially continuous annular cavity. Alternatively, the sector-shaped cavities of multiple sector-shaped outer shells 22 may be partially interconnected or separated by the clamp 21, forming a circumferentially non-continuous annular cavity. In this embodiment, one sector-shaped outer shell 22 is connected to the left half-ring of the clamp 21, and another sector-shaped outer shell 22 is connected to the right half-ring of the clamp 21. Therefore, the sector-shaped cavities of the two sector-shaped outer shells 22 are not interconnected. Each sector-shaped outer shell 22 has at least one particle vibration damper 10 and at least one eddy current vibration damping and energy dissipation device 50 disposed within its sector-shaped cavity.

[0041] Multiple particle dampers 10 are arranged circumferentially within the annular cavity along the annular member 20; each particle damper 10 includes a container 11 and particles 12 filled within the container 11.

[0042] In this embodiment, the annular component 20 has two fan-shaped outer shells 22, each fan-shaped outer shell 22 having a fan-shaped cavity inside, and each fan-shaped cavity housing two particle vibration dampers 10. The two particle vibration dampers 10 are spaced apart along the arc length direction of the fan-shaped outer shell 22, which is the circumferential direction of the annular component 20. Since the annular component 20 in this embodiment includes two fan-shaped outer shells 22, and each fan-shaped outer shell 22 houses two particle vibration dampers 10, the annular structure in this embodiment is configured with four particle vibration dampers 10, such as... Figure 2 As shown.

[0043] In this embodiment, the container 11 is a hollow cylindrical structure, with its central axis parallel to the central axis of the pipe 70, and the central axis of the clamp 21 coinciding with the central axis of the pipe 70. The hollow cylindrical structure is equipped with an openable cover, which allows the number of particles 12 inside the container 11 to be increased or decreased by opening the cover.

[0044] Multiple translational guide devices 30 are arranged at intervals along the circumference of the annular member 20; the multiple translational guide devices 30 are connected one-to-one with the containers 11 of the multiple particle vibration dampers 10 to guide the particle vibration dampers 10 to translate radially along the annular member 20.

[0045] The number of translation guide devices 30 is the same as the number of particle dampers 10. In this embodiment, there are four particle dampers 10, so there are also four translation guide devices 30.

[0046] Each translation guide device 30 includes a matching slide 31 and a slider 32; the slide 31 is radially disposed on the fan-shaped base plate 222 along the annular member 20; that is, the length direction of the slide 31 is radially disposed along the fan-shaped base plate 222, and the length direction of the slide 31 spatially points towards the central axis of the pipe 70; the slider 32 is connected to the bottom of the container 11 of the particle damper 10, such as... Figure 3 As shown. The slider 32 moves along the length of the slide 31 on the slide 31, thereby enabling the container 11 of the particle damper 10 to move along the length of the slide 31 to move closer to or further away from the pipe 70.

[0047] The energy-dissipating spring 40 is connected between the annular member 20 and the container 11 of the particle damper 10.

[0048] like Figure 2 , Figure 3 As shown, the energy-dissipating spring 40 in this embodiment includes an outer energy-dissipating spring 41 and an inner energy-dissipating spring 42. The outer energy-dissipating spring 41 connects the arc-shaped side plate 223 and the container 11 of the particle vibration damper 10; the inner energy-dissipating spring 42 connects the clamp 21 and the container 11 of the particle vibration damper 10. The compression direction or elongation direction of the outer energy-dissipating spring 41 and the inner energy-dissipating spring 42 of each set of energy-dissipating springs 40 is parallel to the length direction of the slide 31, or the compression direction or elongation direction is set along the radial direction of the annular member 20. When the pipe 70 vibrates, the energy-dissipating spring 40 can, on the one hand, prevent the container 11 of the particle vibration damper 10 from colliding violently with the annular member 20, and on the other hand, participate in energy dissipation, enhancing the energy dissipation and vibration damping effect of the vibration damping device.

[0049] Multiple eddy current vibration damping and energy dissipation devices 50 are arranged circumferentially along the annular member 20. The number of eddy current vibration damping and energy dissipation devices 50 is the same as the number of particle vibration dampers 10, and two eddy current vibration damping and energy dissipation devices 50 are arranged in each sector housing 22.

[0050] The eddy current vibration damping and energy dissipation device 50 includes a partition 51, a permanent magnet 52, and a conductor plate 53.

[0051] The partition plates 51 are distributed at intervals along the circumference of the annular member 20 on both sides of the particle damper 10.

[0052] The permanent magnet 52 is disposed on the partition plates 51 on both sides of the particle damper 10, generating a magnetic field that passes through the particle damper 10.

[0053] The conductor plate 53 is connected to the container 11 of the particle damper 10 and moves in a direction perpendicular to the magnetic field to generate eddy currents.

[0054] Since each sector-shaped housing 22 contains two particle vibration dampers 10, each particle vibration damper 10 has a partition 51 on both sides for mounting permanent magnets 52. To save materials and space, only one partition 51 can be set between the two particle vibration dampers 10, with permanent magnets 52 mounted on both surfaces of the partition 51. Alternatively, the two partitions 51 on opposite sides of the two particle vibration dampers 10 can have permanent magnets 52 mounted only on the surfaces facing the particle vibration dampers 10.

[0055] When the pipe 70 vibrates, the container 11 of the particle vibration damper 10 moves radially along the annular member 20. The conductor plate 53 is connected to the container 11 of the particle vibration damper 10, so the conductor plate 53 also moves with the container 11 in a direction perpendicular to the magnetic induction intensity. Eddy currents are generated in the conductor plate 53. The eddy currents are converted into heat energy and dissipated due to the resistance in the conductor plate 53, thereby realizing the vibration reduction and energy dissipation of the pipe 70.

[0056] In this embodiment, the conductor plate 53 is disposed inside the container 11 of the particle damper 10, dividing the internal cavity of the container 11 into two sub-cavities, each containing particles 12. The cutting magnetic field surface of the conductor plate 53 is parallel to the length direction of the slide 31.

[0057] In fact, the partitions 51 arranged on both sides of the particle damper 10 inside the fan-shaped outer shell 22 divide the fan-shaped cavity of the fan-shaped outer shell 22 into a smaller fan-shaped sub-cavity; the particle damper 10 and the conductor plate 53 are located on the center line of the fan-shaped sub-cavity, and the two partitions 51 and the permanent magnets 52 on the partitions 51 are symmetrically distributed with the center line as the center line of symmetry.

[0058] In some embodiments, multiple conductor webs are welded to both sides of the conductor plate 53. The surface of the conductor webs has an angle α less than 90 degrees with the surface of the conductor plate 53. The angle α between the multiple conductor webs on each side of the conductor plate 53 and the conductor plate 53 increases sequentially along the length of the conductor plate 53. For example, the angle α between the first conductor web in the length direction of the conductor plate 53 and the conductor plate 53 is 30 degrees, the angle α between the second conductor web in the length direction of the conductor plate 53 and the conductor plate 53 is 35 degrees, and so on. The conductor webs not only serve to cut the magnetic field but also improve the heat dissipation effect of the conductor plate 53. In addition, the conductor webs can also divide the fan-shaped sub-cavities into more irregular contours, which is beneficial to the collision and friction of the particles 12. The conductor plate 53 and the conductor webs are preferably iron plates.

[0059] The multi-directional vibration damping device for the pipeline also includes an actuator 61, an acceleration sensor 62, and a controller 63.

[0060] Actuators 61 are mounted on at least one partition 51 on both sides of the particle vibration damper 10, and are used to drive the two partitions 51 of the particle vibration damper 10 to move closer together or further apart. Since the conductor plate 53 is located at the center of the container 11 of the particle vibration damper 10, the movement of the partitions 51 on both sides causes the distance between the conductor plate 53 and the permanent magnets 52 on both sides to change, thereby adjusting the eddy current damping force. Thus, by changing the damping effect of the eddy current vibration damping energy dissipation device 50, it can be applied to different vibration intensities.

[0061] In this embodiment, an actuator 61 is provided on the two partitions 51 that are furthest apart along the circumference of each sector-shaped outer shell 22.

[0062] like Figure 1 , Figure 4 As shown, the top of the annular member 20, i.e., the inner arc edge of the fan-shaped top plate 221, is provided with an arc-shaped opening 224 arranged circumferentially (or along the arc length direction of the inner arc edge of the fan-shaped top plate 221); the top of the partition 51 is provided with a hook portion, which passes through the arc-shaped opening 224 and is suspended from the top of the annular member 20. The actuator 61 is provided on the top of the fan-shaped top plate 221 of the annular member 20, and the two partitions 51 that are farthest from the arc length direction of the fan-shaped top plate 221 are respectively connected to an actuator 61, driving the partition 51 to move along the arc length direction of the arc-shaped opening 224.

[0063] An accelerometer 62 is installed on the outside of the pipe 70 to collect the acceleration signal of the pipe 70 vibration. Multiple accelerometers 62 can be set, and multiple accelerometers 62 are set at intervals along the circumference of the pipe 70. The controller 63 is electrically connected to the accelerometer 62 and the actuator 61. Based on the acceleration signal, the controller 63 sends a control command to the actuator 61 to drive the partition plates 51 on both sides of the particle vibration damper 10 to move closer or further apart. By changing the distance between the conductor plate 53 and the permanent magnets 52 on both sides, the eddy current damping force can be adjusted, thereby effectively controlling the severe vibration of the pipe 70.

[0064] Based on the same inventive concept, this invention also proposes a method for damping a pipe 70 based on particle 12 damping, comprising the following steps: installing an annular member 20 with an annular cavity on the outside of the pipe 70; the annular cavity surrounding the pipe 70; arranging a plurality of particle dampers 10 at intervals along the circumference of the annular member 20 inside the annular cavity; each particle damper 10 includes a container 11 and particles 12 filled in the container 11; arranging a plurality of translational guide devices 30 at intervals along the circumference of the annular member 20 on the annular member 20; and arranging the plurality of translational guide devices 30... A corresponding container 11 is connected to multiple particle vibration dampers 10; an energy-dissipating spring 40 is connected between the annular member 20 and the container 11 of the particle vibration damper 10; when the pipe 70 vibrates, the particle vibration damper 10 is guided to translate radially along the annular member 20 using a translation guide device 30; multi-directional vibration damping of the pipe 70 is achieved by the mutual friction and collision of the particles 12 in the container 11 of the particle vibration damper 10 and by the compression and tension of the energy-dissipating spring 40; the mass, size, and filling rate of the particles 12 in the container 11 of the particle vibration damper 10 are adjusted according to the vibration damping requirements. For example, when the vibration damping requirements are high, the filling rate of the particles 12 in each container 11 is increased. When the vibration damping requirements are low, the filling rate of the particles 12 in each container 11 can be decreased.

[0065] The above method also includes a plurality of eddy current vibration damping and energy dissipation devices 50 arranged circumferentially along the annular member 20; the eddy current vibration damping and energy dissipation device 50 includes: partition plates 51, which are spaced apart on both sides of the particle vibration damper 10 along the circumferential direction of the annular member 20; permanent magnets 52, which are disposed on the partition plates 51 on both sides of the particle vibration damper 10 to generate a magnetic field passing through the particle vibration damper 10; and conductor plates 53, which are connected to the container 11 of the particle vibration damper 10 and move in a direction perpendicular to the magnetic field to generate eddy currents.

[0066] An actuator 61, mounted on at least one partition 51 on each side of the particle vibration damper 10, drives the partitions 51 on both sides of the particle vibration damper 10 to move closer or further apart. An acceleration sensor 62, installed externally on the pipe 70, collects the acceleration signal of the pipe 70's vibration. Based on the acceleration signal, a controller 63 sends a control command to the actuator 61 to drive the partitions 51 on both sides of the particle vibration damper 10 to move closer or further apart. By adjusting the distance between the conductor plate 53 and the permanent magnets 52 on both sides, the eddy current damping force is adjusted, thereby changing the damping effect of the eddy current vibration damping and energy dissipation device 50 to suit different vibration intensities.

[0067] The number of permanent magnets 52, as well as the orientation and number of particle dampers 10, eddy current damping energy dissipation devices 50, acceleration sensors 62, and actuators 61, can be set according to actual needs to change the magnitude of eddy current damping force and adapt to different working conditions.

[0068] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-directional vibration reduction device for pipelines based on particle damping, characterized in that, include: A ring-shaped member, installed on the outside of a pipe, the ring-shaped member having an annular cavity surrounding the pipe; Multiple particle vibration dampers are arranged circumferentially within the annular cavity along the annular member; each particle vibration damper includes a container and particles filled within the container. Multiple translational guiding devices are spaced apart circumferentially on the annular member; each translational guiding device is connected to a container of multiple particle vibration dampers in a corresponding manner to guide the particle vibration dampers to translate radially along the annular member; and An energy-dissipating spring is connected between the annular component and the container of the particle damper; The multi-directional vibration damping device for the pipeline also includes a plurality of eddy current vibration damping and energy dissipation devices arranged circumferentially along the annular member; the eddy current vibration damping and energy dissipation devices include: The partitions are distributed circumferentially on both sides of the particle damper along the annular member; Permanent magnets, mounted on partitions on both sides of the particle damper, generate a magnetic field that passes through the particle damper; and A conductor plate, connected to the container of the particle damper, moves in a direction perpendicular to the magnetic field to generate eddy currents; The conductor plate is disposed inside the container of the particle damper, dividing the internal cavity of the container into at least two sub-cavities, and the particles are disposed in each sub-cavity. The multi-directional vibration damping device for pipelines also includes an actuator; the actuator is disposed on at least one partition on both sides of the particle vibration damper, and is used to drive the two partitions of the particle vibration damper to move closer together or further apart.

2. The multi-directional vibration reduction device for pipelines based on particle damping according to claim 1, characterized in that, The multi-directional vibration damping device for the pipeline also includes an acceleration sensor and a controller; the acceleration sensor is installed on the outside of the pipeline and is used to collect the acceleration signal of the pipeline vibration; the controller is electrically connected to the acceleration sensor and the actuator, and based on the acceleration signal, the controller sends a control command to the actuator to drive the partitions on both sides of the particle vibration damper to move closer or further apart.

3. The multi-directional vibration reduction device for pipelines based on particle damping according to claim 1, characterized in that, The top of the annular component is provided with an arc-shaped opening arranged circumferentially; the top of the partition is provided with a hook portion, which passes through the arc-shaped opening and is suspended from the top of the annular component; the actuator is provided on the top of the annular component and drives the partition to move along the arc length direction of the arc-shaped opening.

4. The multi-directional vibration reduction device for pipelines based on particle damping according to claim 1, characterized in that, The annular component includes: Clamps, installed on the outside of the pipe; and Multiple fan-shaped shells are spliced ​​around the outside of the clamp along the circumference of the clamp. Each fan-shaped shell includes a fan-shaped top plate, a fan-shaped bottom plate, and an arc-shaped side plate disposed between the fan-shaped top plate and the fan-shaped bottom plate. The fan-shaped top plate, the fan-shaped bottom plate, and the arc-shaped side plate enclose a fan-shaped cavity. The fan-shaped cavities of the multiple fan-shaped shells are distributed along the circumference of the clamp to form the annular cavity.

5. The multi-directional vibration reduction device for pipelines based on particle damping according to claim 4, characterized in that, Each of the translational guide devices includes a slide and a slider; the slide is radially disposed on the fan-shaped base plate along the annular member; the slider cooperates with the slide and is connected to the container of the particle damper.

6. The multi-directional vibration reduction device for pipelines based on particle damping according to claim 4, characterized in that, The energy-dissipating spring includes an outer energy-dissipating spring and an inner energy-dissipating spring; the outer energy-dissipating spring connects the arc-shaped side plate and the container of the particle vibration damper; the inner energy-dissipating spring connects the clamp and the container of the particle vibration damper.

7. A method for reducing pipeline vibration based on particle damping, implemented by the multi-directional pipeline vibration reduction device based on particle damping as described in claim 1, characterized in that, Includes the following steps: An annular component with an annular cavity is installed on the outside of a pipe; the annular cavity surrounds the pipe; multiple particle vibration dampers are spaced apart along the circumference of the annular component inside the annular cavity; each particle vibration damper includes a container and particles filled in the container; multiple translational guide devices are spaced apart along the circumference of the annular component; and each translational guide device is connected to the container of the multiple particle vibration dampers in a corresponding manner; an energy-dissipating spring is connected between the annular component and the container of the particle vibration damper. When the pipeline vibrates, the particle vibration damper is guided to move radially along the annular component using a translational guide device; multi-directional vibration reduction of the pipeline is achieved by the mutual friction and collision of particles in the container of the particle vibration damper and by the compression and tension of the energy-dissipating spring; the mass, size and filling rate of the particles in the container of the particle vibration damper are adjusted according to the vibration reduction requirements.

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