68 results about "Tuned liquid damper" patented technology

The invention relates to a hybrid energy dissipation vibration damping device which comprises a container, a particle system and viscous liquid. The particle system comprises solid particles, the viscous liquid can be a single type of liquid, or a plurality of types of liquid are mixed with one another to form the viscous liquid, and the viscous liquid is accommodated inside the container; the particle system is arranged in the viscous liquid, can float in the viscous liquid or can be sunken at the bottom of the viscous liquid; the viscous liquid can vibrate in the container. A function mechanism of the hybrid energy dissipation vibration damping device is similar to a function mechanism of a tuned liquid damper, the different types of liquid rub with one another to dissipate energy, structural restoring force is provided for lateral pressure of the container, and structural amplitude is reduced; the solid particles of the particle system are collided with one another and rub with one another in the container to dissipate energy; the viscous liquid rubs with the particle system or the particles to dissipate energy. The hybrid energy dissipation vibration damping device has the advantages that merits of a particle damper and merits of the tuned liquid damper are integrated in the hybrid energy dissipation vibration damping device, and the hybrid energy dissipation vibration damping device is superior to the traditional vibration damper with a single energy dissipation principle owing to various hybrid energy dissipation mechanisms for liquid-phase rubbing energy dissipation, solid-phase collision and rubbing energy dissipation, solid-liquid-phase rubbing energy dissipation and the like.

The invention discloses a nonlinear tunable mass and liquid damper used by combining a tunable mass damper and a tunable liquid damper through nonlinear springs. The nonlinear tunable mass and liquid damper comprises a solid mass block, a cavity, internal viscous liquid, a plurality of universal wheels, a preserved hole and a nonlinear spring device. The solid mass block and a closed shell outside the solid mass block serve as a center structure. The viscous liquid with a certain volume is added in the cavity and can circulate in the reserved hole in the mass block. The center structure is connected with baffles or walls on the periphery through the four sets of nonlinear springs outside the cavity. Rotating shafts are arranged at the joints between the nonlinear springs and the baffles or walls so that the nonlinear springs can horizontally rotate. The universal wheels are arranged at the bottom of the center structure so that the damper can freely move in the horizontal plane. According to the working principle, energy input into a building through an earthquake or / and wind vibration is dissipated by means of the mass of the solid block, the non-linear springs and friction force provided when the viscous liquid flows through the small hole in the solid block. The nonlinear tunable mass and liquid damper integrates the advantages of the tunable mass damper and the tunable liquid damper, is installed on the top of a high-rise building, and is simple and reliable in structure, low in manufacturing cost and capable of achieving the good damping effect.

The invention relates to a mixed energy dissipation and vibration reduction damping device with a more perfect energy consumption effect. The device comprises a container, particle systems and viscous liquid and a spring system, wherein the particle systems consist of solid particles, bearing rods and fixing plates. The device integrates the advantages of a particle damper and a tuning liquid damper; when the damping device moves, liquid sloshes to consume energy; holes among the particles improve sloshing energy consumption capacity of the liquid; at the same time, the liquid sloshes to drive the movable particle systems to move; and the movable particle systems impact the fixed particle system on the inner side to consume the energy during reciprocating motion. Due to various mixed energy consumption mechanisms such as the liquid phase friction energy consumption and solid phase collision and friction energy consumption, the device has a greater advantage compared with the traditional vibration reduction damper with a single energy consumption principle.

The invention relates to a hybrid control device for horizontal shock absorption and isolation of an aqueduct structure. The device mainly comprises a plurality of dampers (1), a plurality of springs (2), a grating (4) and a lead-zinc rubber support (6), wherein the plurality of dampers (1) and the plurality of springs (2) are arranged between the tops of aqueduct walls (3) at two sides of the aqueduct in longitudinal direction; the grating (4) is arranged in the aqueduct in the longitudinal direction; the lead-zinc rubber support (6) is arranged at the top of an aqueduct pier; and an aqueduct water body and an aqueduct body define a big rectangular TLD (tuned liquid damper) water tank. According to the invention, the TLD effect of a massive water body in the aqueduct body is taken into account, and seismic response is reduced by utilizing the shaking of the water body, thus changing the disadvantages of the water body to advantages, and breaking through a research method in that the traditional massive water body is disadvantaged to the aqueduct structure; more importantly, a hybrid shock absorption and isolation device consisting of the dampers, the springs, the grating and the lead-zinc rubber support can reduce the horizontal seismic response of the aqueduct to a greater degree, and is simple to install and is economical and practical.

The invention discloses a semi-active negative rigidity multidimensional vibration damping device. The semi-active negative rigidity multidimensional vibration damping device comprises an outer box body, wherein a tuned liquid damper, a negative rigidity mechanism and a magnetostrictive vibration generating unit are arranged inside the outer box body. The tuned liquid damper is a cylinder filled with damping liquid, the side surface of the cylinder is connected with a vibration absorption layer through a plurality of springs with one ends connected with rolling balls, the cylinder is arrangedon a plurality of metal balls, and the metal balls are arranged above a drum body. The negative rigidity mechanism is formed by the drum body and negative rigidity adjusting units radially arranged around the drum body; a giant magnetostrictive body is arranged at the bottom in the outer box body and connected with the drum body through a disc spring, and an induction coil and a permanent magnet are arranged around the giant magnetostrictive body from inside to outside to form the magnetostrictive vibration generating unit. An acceleration sensor is arranged at the bottom of the drum body andis connected with the magnetostrictive vibration generating unit, an electric energy storage and extraction unit, a controller and an excitation coil in series to form a closed loop.

The invention discloses a quicksand type energy dissipation shock absorption and damping hybrid device. The device comprises a damper and an installing plate. The damper is provided with a cavity and fixed to the upper surface of the installing plate. The lower surface of the installing plate is connected with a building structural component. A cavity of the damper is filled with a plurality of balls and / or cobblestones and a mixture of sand and water. The device integrates the advantages of a tuned liquid damper, the advantages of a tuned mass damper, the advantages of a viscous damper and the advantages of a particle damper, is good in energy dissipation effect and has high applicability in the constructional engineering anti-seismic and wind resistance fields.

The invention relates to a hybrid wind vibration system of a super high-rise building. The system comprises at least one tuned mass damper and at least one tuned liquid damper which are vertically distributed in a plurality of floors of the super high-rise building; the structure parameters of the tuned mass damper and tuned liquid damper are configured to be meet the condition that the displacement, speed and acceleration of the super high-rise building are minimized. Compared with the prior art, the hybrid wind vibration system of the super high-rise building has the advantages that the tuned mass damper and the tuned liquid damper are combined, the efficiency of the tuned mass damper and the economy of the tuned liquid damper are fully utilized, thus the wind-induced vibration response of a building structure is reduced, the wind vibration resistance of the building is improved, and the advantages of safety, reliability, low investment and high efficiency are brought.

The invention discloses a combined multi-phase vibration-reduction device. The combined multi-phase vibration-reduction device comprises a container, particle systems, viscosity liquid, elastic systems and a screen. The particle systems are formed by spherical particles, bearing rods, fixing rods and built-in transverse cylinders in a two-way arrangement mode, the viscosity liquid is formed by mixing one or more kinds of liquid and located inside the container, and the spherical particles are located inside the viscosity liquid or float or settle at the bottom of the liquid. The viscosity liquid can vibrate inside the container, and the spherical particle systems collide with each other and rub each other inside the screen to consume energy. The viscosity liquid and the particle systems collide with each other and rub each other to consume energy, and the particles and the screen collide with each other and rub each other to consume energy. Advantages of a tuned liquid damper, a viscous damper, a tuned mass damper and a particle damper are combined, energy consumption is performed through the combination of a liquid phase and a solid phase, the vibration-reduction effect is good, and the combined multi-phase vibration-reduction device is widely applied to the fields of constructional engineering earthquake resistance and wind resistance.

A multidimensional adjustable double damping control device structurally comprises a base plate, an elastic part I, an elastic part II, a movable part and a mass pendulum, wherein a support rod is arranged at the top of the elastic part I, the elastic part I can deform in the Z axis direction to drive the support rod to move in the Z axis direction, so that damping in the Z axis direction is realized; the elastic part II and the movable part are located above the elastic part I, and the elastic part moves in the X axis direction with the deformation of the elastic part II so that damping in the X axis direction is realized; the mass pendulum is arranged at the center part of the lower surface of the movable part and swings in the Y axis so that damping in the Y direction is realized. A liquid is arranged in a mass block of the mass pendulum so that the mass pendulum forms a tuned liquid damper, and accordingly, double damping is realized. According to the multidimensional adjustable double damping control device, shaking of the structure in three directions or vibration response under load effects of wind and the like can be double reduced, and the multidimensional adjustable double damping control device has the advantages that the principle is simple, installation is convenient, the cost performance is high and the like.

The invention relates to the technical field of seismic prevention and seismic prevention of high-rise buildings. The tuned liquid damper comprises a water tank and liquid in the water tank, and the water tank is designed into a shallow columnar water tank with a large upper opening and a small lower opening, namely the water tank is an inclined-wall water tank. Compared with a common box type TLD (tuned liquid damper) in the prior art, the tuned liquid damper has the advantages that due to soft spring characteristics of the inclined-wall TLD, a larger damping force can be generated in use of liquid equal in quantity, and utilization efficiency of the liquid in the water tank is improved. The cylindrical inclined-wall TLD is capable of better adapting to arbitrariness of load directions to play a role in damping in all directions, so that the cylindrical inclined-wall TLD can be better applied to buildings, such as round buildings and square buildings, approximately uniform in direction.

The invention relates to a vortex vibration energy consumption type tuned liquid damper which comprises a water tank, tuned liquid, a long and thin elastomer and a connecting node.The water tank is firmly connected with a body structure.The long and thin elastomer is connected to the interior of the water tank through the connecting node.The tuned liquid is injected into the water tank according to the designed liquid level.The structure vibrates so that the tuned liquid in the water tank can vibrate at a certain frequency; within the motion speed range of the tuned liquid, the long and thin elastomer is subjected to a vortex-induced resonance, large-amplitude transverse vibration is generated, the vibration energy of the liquid is dissipated, and damping is provided for the tuned liquid damper.The vortex vibration energy consumption type tuned liquid damper has the advantages of being simple in structure, good in liquid damping energy consumption mode, stable in vibration reduction effect and the like.

A tuned liquid damper comprising a housing with a hollow cavity within said housing and a first fluid which partially fills said hollow cavity. The inner surface of said hollow cavity is essentially spherical. The tuned liquid damper further comprises first fluid damping means arranged within the essentially spherical cavity of the housing. In this way, a tuned liquid damper is provided which has a response which is constant and independent of the orientation of the tuned liquid damper. Damping means are provided in order to be able to control the damping effect of the tuned liquid damper.

The invention discloses an annular cylindrical tuned liquid damper for controlling vibration of a long boom of a long-span bridge, and a design method, and belongs to the technical field of engineering structure vibration control. A box body bracket is mounted in a central point of a to-be-controlled boom, and then two split box bodies are spliced and mounted on the box body bracket; and accordingto a set height, a damping liquid is added into a damper box body, and a top cover on the upper side is closed to prevent the liquid from being splashed or volatilized. The liquid in the box body shakes for consuming energy and applying a lateral force to a barrel wall, thereby realizing control on a power response of the boom. A calculation method for specific parameters of the annular cylindrical tuned liquid damper is given in the patent; and the damper has the advantages of good shock absorption effect, low mounting and repair costs, convenient repair, easy tuning and the like, and is ofpositive significance for prolonging the service life of the boom and guaranteeing safe service of the boom.

The invention provides a multilayer tuned liquid damper which is composed of damper chamber units, liquid, blades and connecting nodes. The damper chamber unit has an annular structure. The liquid is injected into the chamber. A plurality of blades are fixed in the chamber. The upper end of each blade is hinged with top of the damper chamber unit, and the lower end is connected with the damper chamber unit through the connecting node. A plurality of damper chamber units are stacked together in a vertical direction, thereby forming an integral member, wherein the integral member is placed on top of an offshore wind turbine spar-type floating foundation. Under the function of factors such as sea surface wave, a pitching angle is reduced through shake of the liquid in each damper chamber unit, thereby realizing a purpose of energy dissipation.

The invention discloses a tuned liquid damper performance parameter detection method, system, equipment and a medium. The method includes: firstly, determining a colored noise power spectrum of inputexcitation, simulating customized colored noise excitation for a vibration test, and in the vibration table test process under the customized colored noise excitation, collecting liquid response datain a TLD reduced-scale model through a measurement system to obtain a TLD coupling response signal; and acquiring a decoupled modal response signal based on the TLD coupling response signal, and performing parameter identification on the decoupled modal response signal to obtain the parameter performance of the TLD. According to the method, the TLD performance parameters can be rapidly and efficiently detected, the method has the advantage of small resource occupation amount, the method is not limited by the shape of the TLD and internal components, and the method is suitable for detecting theperformance parameters of the TLD which is irregular in shape and is provided with the internal components.

The invention discloses a design method of a tuned liquid damper based on a building fire fighting water tank. The method comprises the following steps: determining whether a fire water tank is suitable for being converted into a tuned liquid damper; When the fire water tank is suitable to be transformed into a tuned liquid damper, the difference of natural vibration period and frequency between the fire water tank and the building structure under the fire water tank is obtained. Formulate and adjust the scheme of setting up the spoiler net and water level in the fire water tank; Determine thedamping effect of fire water tank. As that disturb net is added in the fire water tank at the top of the high-rise building and the water level is controlled, both the function of the fire water tankand the TLD function can be realized, thereby playing a vibration damping role; It is not necessary to set a large number of small shallow water tanks as TLD, but to use the original fire water tankat the top of the building as TLD, which not only reduces the cost of vibration reduction but also does not affect the use of the building. Adding a spoiler net in the fire water tank does not affectthe quantity of water in the fire water tank of the building, but also can achieve the effect of vibration reduction by changing the sloshing frequency of the water.

The invention provides a bidirectional multi-frequency rectangular lattice type tuned liquid damper and relates to a building structure shock controlling device. The bidirectional multi-frequency rectangular lattice type tuned liquid damper is formed by a rectangular-section container, a lattice plate, in-built solution and a fixed part. The damper is simple, practical, convenient to maintain, low in cost, suitable for use in a short term and in a long term, good in self-activation, small in required space, simple to install and convenient to use. The transverse and longitudinal earthquake reactions are controlled by adjusting transverse and longitudinal dimensions, the earthquake reactions under the effects of different formations can be controlled by adjusting the transverse dimension of a lattice, and the fact that a tuned liquid damper designed according to natural vibration frequency of a high-order structure is tall and narrow is avoid. The amount of the dampers is increased correspondingly according to increase of formation orders so as to improve sensitivity of controlling of high-order formation wind vibration and earthquake reactions. When meeting with an earthquake or strong wind, the bidirectional multi-frequency rectangular lattice type tuned liquid damper can reduce power reaction of a building structure and has good protecting effect on the building structure.

The invention discloses a tuned liquid damper design method and device, a medium and equipment, wherein the method comprises the steps: firstly, carrying out TLD preliminary design, and obtaining TLD preliminary design parameters; analyzing the sensitivity of the TLD damping ratio of the structure-TLD coupling system under the action of the wind load, and fitting a relation curve of the TLD response and the TLD damping ratio; based on TLD current design parameters, conducting TLD vibration reduction performance vibration table test or numerical simulation analysis, obtaining the liquid sloshing frequency ft', and fitting a TLD damping ratio and TLD response relation curve; obtaining damping ratios which can be provided by the TLD under the action of wind loads in different return periods, and judging whether the current ft' of the TLD and the response of a controlled structure can meet a control target or not; if not, adjusting the TLD design parameters, calculating the liquid sloshing frequency ft' and the damping ratio till the obtained ft' and the response of the controlled structure meet the control target, and obtaining the final design result of the TLD. According to the invention, the design of the TLD is more detailed and accurate.

The invention discloses a design method of multi-ring tuned liquid dampers based on ultra-high voltage composite casings, and belongs to the technical field of ultra-high voltage electrical engineering. In combination with the structural characteristics of the casings in the type, annular containers provided by oil collecting boxes at the tops of the casings are used for arranging the multi-ring tuned liquid dampers. The multi-ring tuned liquid dampers are obtained by optimizing the height of the oil collecting boxes, the radius of the oil collecting boxes and the height of liquid in the oil collecting boxes, and the purpose of damping is further achieved. The multi-ring tuned liquid dampers can provide a wide damping frequency band, and can be applied to damping design of the ultra-high voltage composite casings under different site conditions. According to the design method, the multi-ring tuned liquid dampers are designed based on a frequency response curve of a structure simplifying model, and reduces the corresponding peak value of the frequency response curve by setting ATLDj. The design method has a clear physical meaning and can quickly determine the number of the ring tuned liquid dampers for achieving the optimal damping effect.

Provided is a system for fatigue testing a wind turbine blade including: a mounting for retaining a root end of the wind turbine blade, at least one actuator assembly for attachment to the wind turbine blade, the at least one actuator assembly including at least one actuator for exciting the wind turbine blade in flapwise directions and / or edgewise directions, and at least one measuring device for measuring of a stress, a strain and / or a deflection of the wind turbine blade. The system further includes at least one tuned liquid damper for attachment to the wind turbine blade, the tuned liquid damper comprising a container and a liquid contained therein.

The invention discloses a nonlinear tunable mass and liquid damper used by combining a tunable mass damper and a tunable liquid damper through nonlinear springs. The nonlinear tunable mass and liquid damper comprises a solid mass block, a cavity, internal viscous liquid, a plurality of universal wheels, a preserved hole and a nonlinear spring device. The solid mass block and a closed shell outside the solid mass block serve as a center structure. The viscous liquid with a certain volume is added in the cavity and can circulate in the reserved hole in the mass block. The center structure is connected with baffles or walls on the periphery through the four sets of nonlinear springs outside the cavity. Rotating shafts are arranged at the joints between the nonlinear springs and the baffles or walls so that the nonlinear springs can horizontally rotate. The universal wheels are arranged at the bottom of the center structure so that the damper can freely move in the horizontal plane. According to the working principle, energy input into a building through an earthquake or / and wind vibration is dissipated by means of the mass of the solid block, the non-linear springs and friction force provided when the viscous liquid flows through the small hole in the solid block. The nonlinear tunable mass and liquid damper integrates the advantages of the tunable mass damper and the tunable liquid damper, is installed on the top of a high-rise building, and is simple and reliable in structure, low in manufacturing cost and capable of achieving the good damping effect.

The invention discloses a roll ball type multidirectional damping control device comprising a semi-closed cylindrical structure, a hollow metal mass ball, an inwards concave type hook face bearing table, springs and anti-collision rubber. The semi-closed cylindrical structure and the inwards concave type hook face bearing table are connected, and the inwards concave type hook face bearing table is internally provided with the hollow metal mass ball. The springs are arranged on the connection positions of the semi-closed cylindrical structure and the inwards concave type hook face bearing table. The hollow metal mass ball rolls in the inwards concave type hook face bearing table in any direction, and when a structural object is under horizontal motivation, large damping force is generated. Liquid is injected into the hollow metal mass ball, and the liquid in the hollow metal mass ball and the hollow metal mass ball form a tuned liquid damper so as to supply damping force to a structure. The purpose of horizontal-direction multi-stage vibration control is achieved; and meanwhile, when the structural object is under vertical motivation, through vertical movement of the inwards concave type hook face bearing table, by means of the method that the hollow metal mass ball impacts the top rubber to consume energy, vertical vibration of the structure is controlled.

The invention relates to a semi-active tuned liquid damper. The semi-active tuned liquid damper comprises a damper water tank, a regulating water tank and a servo control system; wherein the damper water tank is composed of a box I, a damping net and tuned liquid; the regulating water tank is composed of a box II and regulating liquid; the servo control system is composed of a single-chip circuit board, an acceleration sensor, a liquid level sensor, a water pump I and a water pump II. The frequency of the tuned liquid damper is determined by the liquid level of the tuned liquid. According to the semi-active tuned liquid damper, the liquid level of the tuned liquid can be adjusted through the servo control system to achieve precise control of the frequency of the tuned liquid damper. Compared with the prior art, the semi-active tuned liquid damper can realize the precise adjustment of the frequency of the tuned liquid damper, the damping effect is improved, the design of the damper is simplified, and the damper is good in control effect, simple in structure, easy to maintain and install, good in durability and the like.

The invention discloses a wind-induced vibration realization method for a connected tower and a plurality of tuned liquid dampers, and the method comprises the following steps: S1, carrying out the simulation of an atmospheric boundary layer flow field, and obtaining the wind load time history of the connected tower through a wind tunnel test; s2, establishing a motion equation of the connected tower; s3, calculating the frequency and damping ratio when each TLD achieves the optimal control effect according to the dynamic characteristics of the connected tower, and designing the size and water storage height of the TLD; s4, determining a scheme of an internal damping component by comparing the damping ratio of the TLD numerical model with the optimal damping ratio; s5, establishing a plurality of TLD synchronous vibration numerical models; s6, establishing a coupling motion equation of the connected tower under the control of the TLD; and S7, calculating wind-induced vibration responses of the connected tower and the plurality of TLD systems under the action of wind loads in different return periods according to the coupled motion equation. The method is not limited to the calculation of the vibration of a single tower and a single TLD, but can calculate the coupled wind-induced vibration of a connected multi-tower structure and a plurality of TLDs.

The invention discloses a stored liquid shaking control method of a floating-type oil and gas production storage and discharging device. The method comprises the following steps that the first order vibration frequency of stored liquid shaking of the floating-type oil and gas production storage and discharging device is calculated; basic parameters of a cuboid tuning liquid damper are determined;a base used for supporting the tuning liquid damper is welded to the floating-type oil and gas production storage and discharging device, and the tuning liquid damper is installed on a fixed base; whether or not the shaking reducing amplitude of the liquid surface reaches the standard is judged according to change conditions of the shaking amplitude of stored liquid after installment of the tuningliquid damper, and if not, the liquid level of the tuning liquid damper is adjusted until the shaking amplitude of the stored liquid surface in the floating-type oil and gas production storage and discharging device reaches the standard. According to the method, the shaking amplitude of the stored liquid is reduced, the safety of oil and gas resources stored in the floating-type oil and gas production storage and discharging device in the transporting process is greatly improved, and the schedule and benefit of the oil and gas resources in the transporting process are improved.

The present invention relates to an anti-seismic brick, which comprises two parts of a brick body sintered from a special shape and a water bag, wherein a film bag made from plastic or other materials is filled with a certain amount of water to form the water bag, the whole body forms a micro tuned liquid damper (TLD), the bricks are prepared into a wall body through anti-seismic calculation to form a whole line TLD system so as to form a house structure and the like, such that an anti-seismic effect is provided.

A liquid damper in a wind turbine is provided. A damper system of a direct driven wind turbine is disclosed, whereby the wind turbine comprises a nacelle, a rotor hub and an electric generator. The electric generator comprises a rotor and a non-rotating part. The rotor hub is connected to the rotor of the electric generator. The non-rotating part of the generator is connected to the nacelle. The wind turbine comprises a damper system to at least partially eliminate an unwanted movement of the wind turbine resulting from wind loads, whereby the damper system comprises a liquid damper. The damper system is arranged at a non-rotating part of the electric generator.

A liquid damper in a wind turbine is provided. A damper system of a direct driven wind turbine is disclosed, whereby the wind turbine comprises a nacelle, a rotor hub and an electric generator. The electric generator comprises a rotor and a non-rotating part. The rotor hub is connected to the rotor of the electric generator. The non-rotating part of the generator is connected to the nacelle. The wind turbine comprises a damper system to at least partially eliminate an unwanted movement of the wind turbine resulting from wind loads, whereby the damper system comprises a liquid damper. The damper system is arranged at a non-rotating part of the electric generator.