CN-122014800-A - Self-powered vibration damper for offshore booster station

CN122014800ACN 122014800 ACN122014800 ACN 122014800ACN-122014800-A

Abstract

The invention discloses a self-powered vibration damper for an offshore booster station, which relates to the technical field of offshore wind power engineering structure vibration control and comprises a shell, and a particle damping unit, a magnetorheological damping unit, an energy storage and energy supply unit and a control unit which are arranged in the shell; the particle damping unit comprises a plurality of vertically distributed particle damping cavities, pistons, spherical particles and piezoelectric material layers are arranged in the particle damping cavities, the magnetorheological damping unit is connected with the particle damping unit and the shell through a mass block, a spring and the magnetorheological damper, the energy storage and energy supply unit stores and supplies electricity to electric energy generated by the piezoelectric material layers, and the control unit adjusts the damping force of the magnetorheological damper according to signals of the vibration sensor. The invention realizes the efficient vibration reduction of the broadband through the composite energy consumption mechanism, utilizes the vibration energy to realize self-power supply, and remarkably improves the safety and durability of the offshore booster station in a complex marine environment.

Inventors

ZHANG JIGANG
ZOU CHUANXUE
ZHU JINGFENG
ZHAI CHANGHAI
LIU SIXI
DING CONG
CHENG BIN
LI YAN
YAN QINGFENG
DENG KEJIAN
LI ZHAOLONG
XU HONGJIAN
LIU JUNWEI

Assignees

青岛理工大学

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (10)

1. Self-powered vibration damper for offshore booster station, characterized by comprising: A housing; The particle damping unit comprises a plurality of particle damping cavities which are sequentially distributed along the vertical direction and are fixedly arranged in the shell, a piston is slidably arranged in each particle damping cavity, any two adjacent pistons are fixedly connected through a vertical connecting rod, the shell is provided with a chute corresponding to each vertical connecting rod, the vertical connecting rods are in sliding fit with the corresponding chute, the length directions of all the particle damping cavities and the length directions of all the chutes are mutually parallel, a plurality of spherical particles are arranged in each particle damping cavity, and a piezoelectric material layer is arranged on the inner wall of each particle damping cavity; The magnetorheological damping unit comprises a mass block, a magnetorheological damper and a plurality of springs, wherein the particle damping unit, the mass block and the magnetorheological damper are sequentially distributed along the length direction of the particle damping cavity, one end, close to the particle damping unit, of the mass block is fixedly connected with one piston through a horizontal connecting rod, the other end of the mass block is connected with the inner wall of the shell through the magnetorheological damper and the springs, and one end of each of the magnetorheological damper and each of the springs is fixedly connected with the mass block, and the other end of each of the magnetorheological damper and each of the springs is fixedly connected with the inner wall of the shell; The energy storage and supply unit comprises an energy storage device; The control unit comprises a controller and a vibration sensor fixedly arranged on the shell, the vibration sensor, the energy storage device and the magnetorheological damper are respectively connected with the controller through signals, the energy storage device is used for supplying power to the magnetorheological damper and the control unit, and the controller is used for adjusting the size of the current applied to a coil in the magnetorheological damper by the energy storage device according to the detection value of the vibration sensor.
2. The self-powered vibration damping device for an offshore booster station of claim 1, wherein the energy storage device is a rechargeable battery.
3. The self-powered vibration-damping device for an offshore booster station of claim 1, wherein all of the pistons are located in a common vertical plane.
4. The self-powered vibration-damping device for an offshore booster station of claim 1, wherein each piston divides the corresponding particulate damping cavity into two subchambers.
5. The self-powered vibration damper for offshore booster station of claim 1, wherein the housing is fixedly provided with a guide rail parallel to the length direction of the particle damping cavity, and the bottom end of the mass block is provided with a roller in rolling fit with the guide rail.
6. The self-powered vibration damper for an offshore booster station of claim 1, wherein the number of springs is two and the magnetorheological damper is positioned between the two springs.
7. The self-powered vibration damper for offshore booster station of claim 1, wherein the energy storage and supply unit further comprises a power distribution device, the power distribution device comprises a power management unit, a multi-path voltage output die and a dual-power switching relay, one input end of the dual-power switching relay is electrically connected with the output end of the energy storage device, the other input end of the dual-power switching relay is electrically connected with the output end of an external power supply, the output end of the dual-power switching relay is electrically connected with the input end of the power management unit, the output end of the power management unit is electrically connected with the input end of the multi-path voltage output die, and the vibration sensor, the controller and the magneto-rheological damper are respectively electrically connected with the output ends of the multi-path voltage output die.
8. The self-powered vibration-damping device for an offshore booster station of claim 7, wherein the power distribution device further comprises a protection circuit electrically coupled to the power management unit.
9. The self-powered vibration damper for the offshore booster station of claim 1, wherein a sound absorption layer is laid on the outer wall of the shell, the sound absorption layer is made of POZD paint, a plurality of parallel grooves which are distributed at intervals are formed in one side, away from the shell, of the sound absorption layer, and the vibration sensor is fixedly arranged on the sound absorption layer.
10. The self-powered vibration damper for offshore booster station of claim 9, wherein a buffer layer is further sandwiched between the inner wall of the particle damping cavity and the piezoelectric material layer, and the buffer layer is made of a buffer material.

Description

Self-powered vibration damper for offshore booster station Technical Field The invention relates to the technical field of vibration control of offshore wind power engineering structures, in particular to a self-powered vibration damper for an offshore booster station. Background The offshore booster station is used as a core hub for collecting and conveying electric energy of an offshore wind farm, the steel structure jacket foundation and the upper block bear dynamic environmental loads such as wind, waves, currents and the like for a long time, and meanwhile, mechanical vibration is induced when internal power equipment (such as a transformer and a generator) operates. These vibration effects couple with the natural frequency of booster station structure, easily cause structural fatigue damage, connected node looseness and low frequency noise radiation, not only threat booster station's overall stability and safe life cycle, but also cause potential risk to marine ecological environment and fortune dimension personnel health. The existing research shows that the high-rise vibration intensity of the booster station is obviously higher than that of the bottom layer, and the influence of the electromechanical equipment vibration on the local structure is particularly remarkable, and the targeted control is needed. Current vibration control techniques for offshore booster stations rely primarily on passive or active dampers. The passive damper (such as viscous damper and tuned mass damper) has simple structure and no need of external energy source, but has narrow vibration reduction frequency band, poor adaptability to low-frequency wave excitation and equipment vibration, and the active damper (such as active mass damper) has high control precision, depends on continuous external power supply, has difficult guarantee of power supply stability in severe marine environment, and has complex system and high operation and maintenance cost. In addition, the traditional damper is mainly focused on the vibration reduction function, and the recycling of vibration energy is lacked. Disclosure of Invention The invention aims to provide a self-powered vibration damper for an offshore booster station, which solves the problems in the prior art and improves the vibration damping effect of the offshore booster station. In order to achieve the above object, the present invention provides the following solutions: the invention provides a self-powered vibration damper for an offshore booster station, which comprises: A housing; The particle damping unit comprises a plurality of particle damping cavities which are sequentially distributed along the vertical direction and are fixedly arranged in the shell, a piston is slidably arranged in each particle damping cavity, any two adjacent pistons are fixedly connected through a vertical connecting rod, the shell is provided with a chute corresponding to each vertical connecting rod, the vertical connecting rods are in sliding fit with the corresponding chute, the length directions of all the particle damping cavities and the length directions of all the chutes are mutually parallel, a plurality of spherical particles are arranged in each particle damping cavity, and a piezoelectric material layer is arranged on the inner wall of each particle damping cavity; The magnetorheological damping unit comprises a mass block, a magnetorheological damper and a plurality of springs, wherein the particle damping unit, the mass block and the magnetorheological damper are sequentially distributed along the length direction of the particle damping cavity, one end, close to the particle damping unit, of the mass block is fixedly connected with one piston through a horizontal connecting rod, the other end of the mass block is connected with the inner wall of the shell through the magnetorheological damper and the springs, and one end of each of the magnetorheological damper and each of the springs is fixedly connected with the mass block, and the other end of each of the magnetorheological damper and each of the springs is fixedly connected with the inner wall of the shell; The energy storage and supply unit comprises an energy storage device; The control unit comprises a controller and a vibration sensor fixedly arranged on the shell, the vibration sensor, the energy storage device and the magnetorheological damper are respectively connected with the controller through signals, the energy storage device is used for supplying power to the magnetorheological damper and the control unit, and the controller is used for adjusting the size of the current applied to a coil in the magnetorheological damper by the energy storage device according to the detection value of the vibration sensor. Preferably, the energy storage device adopts a rechargeable battery. Preferably, all of the pistons are located in the same vertical plane. Preferably, each piston divides the corresponding particle damping cavity in