Multi-order viscous damper with active cooling system

Abstract

The utility model provides a multi-order viscous damper with an active cooling system, and belongs to the technical field of building damping. Comprising a main oil cylinder, the outer side of the main oil cylinder is fixedly connected with a high-heat-conduction material layer, a hollow cavity is formed in the inner side of the high-heat-conduction material layer, the inner side of the hollow cavity is filled with a phase change material, and the contact face of the outer side of the main oil cylinder and the high-heat-conduction material layer is coated with heat conduction silica gel; by arranging the high-heat-conduction material layer, the hollow cavity, the phase-change material and the heat-conduction silica gel, heat generated when the damper works is rapidly transmitted to the phase-change material through the high-heat-conduction material layer, the phase-change material is converted into a liquid state from a solid state after absorbing the heat, the temperature rise rate is greatly reduced through latent heat of phase change, and the heat conduction performance of the damper is improved. When the damper stops working or the environment temperature is reduced, the phase change material is solidified again to release the stored heat, recycling is achieved, oil liquid high-temperature failure is avoided, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of building vibration reduction technology, and in particular to a multi-stage viscous damper with an active cooling system. Background Technology

[0002] A multi-stage viscous damper is a damping device that can effectively control the multi-mode vibration of a structure. It provides different damping forces at different stages to dissipate energy from vibrations of various frequencies and amplitudes, thereby improving the structure's seismic, wind, or vibration resistance.

[0003] Existing viscous dampers generate a large amount of heat due to viscous friction during high-frequency reciprocating motion, causing the internal oil temperature to rise rapidly, leading to a decrease in oil viscosity, aging or even failure of seals, which seriously affects damping performance and service life. Furthermore, they usually only have a single damping force characteristic and cannot flexibly adjust the damping force under different working conditions such as small, medium and large earthquakes, making it difficult to meet multi-stage vibration reduction requirements.

[0004] Therefore, this invention provides a multi-stage viscous damper with an active cooling system to meet the requirements. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage viscous damper with an active cooling system, which controls the temperature rise by absorbing heat through phase change materials and achieves multi-stage damping force output through structural design, thereby significantly improving the reliability and adaptability of the damper and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage viscous damper with an active cooling system, comprising a main cylinder, a high thermal conductivity material layer fixedly connected to the outer side of the main cylinder, a hollow cavity formed on the inner side of the high thermal conductivity material layer, the inner side of the hollow cavity being filled with a phase change material, thermally conductive silicone being applied to the contact surface between the outer side of the main cylinder and the high thermal conductivity material layer, an inner groove formed on the inner side of the main cylinder, the outer side of the inner groove being a segmented gap design, side wall sections fixedly connected to both ends of the inner side of the main cylinder at the inner groove, a common connecting shaft slidably connected between the two side wall sections, a plurality of piston assemblies fixedly connected to the outer side of the connecting shaft, and an external seat fixedly connected to one side of the main cylinder.

[0007] In a preferred embodiment, there are two piston assemblies located at both ends inside the inner groove, with the outer sides of the piston assemblies abutting against the inner groove.

[0008] In a preferred embodiment, the end of the connecting shaft away from the outer seat extends out of the main oil cylinder and is threadedly connected to a left connector.

[0009] In a preferred embodiment, a right connector is fixedly connected to the side of the external connector away from the main cylinder.

[0010] In a preferred embodiment, the end of the connecting shaft near the outer seat passes through the main oil cylinder and extends into the interior of the outer seat.

[0011] In a preferred embodiment, the piston assembly includes a soft gasket fixedly connected to the outer side, and a sealing ring fixedly connected to the connection between the side wall section and the connecting shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, by incorporating a high thermal conductivity material layer, a hollow cavity, a phase change material, and thermally conductive silicone, allows the heat generated during damping operation to be rapidly transferred to the phase change material through the high thermal conductivity material layer. After absorbing the heat, the phase change material changes from a solid to a liquid state, significantly reducing the rate of temperature rise by utilizing the latent heat of phase change. When the damper stops working or the ambient temperature decreases, the phase change material re-solidifies, releasing the stored heat, thus achieving recycling, avoiding high-temperature failure of the oil, and extending the service life of the device.

[0014] This utility model, by setting an inner groove and a piston assembly, allows the segmented gap design on the outer side of the inner groove to cooperate with the piston, enabling the device to output damping force in stages according to different levels of external vibration, flexibly responding to different seismic conditions and improving the practicality of the device. Attached Figure Description

[0015] Figure 1 A cross-sectional view of a multi-stage viscous damper with an active cooling system;

[0016] Figure 2 for Figure 1 Enlarged view of point A;

[0017] Figure 3 for Figure 1 Enlarged diagram of point B.

[0018] In the diagram: 1. Main cylinder; 2. High thermal conductivity material layer; 3. Hollow cavity; 4. Phase change material; 5. Inner groove; 6. Side wall section; 7. Connecting shaft; 8. Piston assembly; 9. External connector; 10. Right connector; 11. Left connector; 12. Thermally conductive silicone. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments.

[0020] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] Please see Figures 1-3 This utility model provides a multi-stage viscous damper with an active cooling system, including a main cylinder 1. A high thermal conductivity material layer 2 is fixedly connected to the outside of the main cylinder 1. A hollow cavity 3 is formed on the inside of the high thermal conductivity material layer 2. The hollow cavity 3 is filled with a phase change material 4. An inner groove 5 is formed on the inside of the main cylinder 1. The outer side of the inner groove 5 is designed with segmented gaps. Thermally conductive silicone 12 is applied to the contact surface between the outside of the main cylinder 1 and the high thermal conductivity material layer 2. The end of the connecting shaft 7 away from the outer seat 9 extends out of the main cylinder 1 and is threadedly connected to a left connector 11. A right connector 10 is fixedly connected to the side of the outer seat 9 away from the main cylinder 1.

[0022] The damper is installed in the working area through the left connector 11 and the right connector 10. When the external environment is under minor earthquake conditions, the piston assembly 8 reciprocates within a small range, and the oil flows through the larger gap of the groove 5 in the middle section, resulting in a low damping force. When the external environment is under moderate earthquake conditions, the piston assembly 8 will increase its outward range of movement, and the oil needs to flow through the smaller gap of the side wall sections 6 at both ends, increasing the damping force to a medium damping force. When the external environment is under major earthquake conditions, the piston assembly 8 moves within its maximum range, and the oil flows through the smallest gap of the side wall section 6, further increasing the damping force to the maximum to meet the high load requirements.

[0023] The inner groove 5 adopts a unique segmented gap design. The size and distribution of these gaps are precisely calculated to perfectly match the motion characteristics of the piston assembly 8. When the device is subjected to different levels of external vibration, the piston assembly 8 slides in the main cylinder 1, and its position and movement speed will change according to the intensity and frequency of the vibration. At this time, the interaction between the piston assembly 8 and the segmented gaps causes the viscous fluid to flow through damping holes or gaps of different sizes, thereby generating different magnitudes of damping force. This graded output design allows the damper to flexibly adjust the magnitude of the damping force according to the actual working conditions. Whether it is a small earthquake, a moderate earthquake or a large earthquake, it can provide a suitable damping effect. Since the damper can dynamically adjust the damping force according to the changes in vibration frequency and amplitude, it can effectively control the multi-mode vibration of the structure and improve the seismic performance of the structure under extreme conditions such as earthquakes.

[0024] Please see Figures 1-3The main cylinder 1 has two side wall sections 6 fixedly connected to the two ends of the inner groove 5. The two side wall sections 6 are slidably connected to the same connecting shaft 7. Several piston groups 8 are fixedly connected to the outer side of the connecting shaft 7. An outer seat 9 is fixedly connected to one side of the main cylinder 1. There are two piston groups 8, which are located at the two ends inside the inner groove 5. The outer side of the piston group 8 is in contact with the inner groove 5. The end of the connecting shaft 7 near the outer seat 9 passes through the main cylinder 1 and extends into the outer seat 9. The piston group 8 includes a soft washer fixedly connected to the outer side. A sealing ring is fixedly connected to the connection between the side wall section 6 and the connecting shaft 7.

[0025] The heat generated by the damper during operation is conducted to the high thermal conductivity material layer 2 through the thermally conductive silicone 12, and then quickly transferred to the phase change material 4. After absorbing the heat, the phase change material 4 changes from solid to liquid, and the latent heat of phase change is used to greatly reduce the temperature rise rate. When the damper stops working or the ambient temperature drops, the phase change material 4 re-solidifies and releases the stored heat, realizing recycling.

[0026] When the damper starts working, the heat generated by the viscous fluid in the main cylinder 1 is rapidly conducted to the hollow cavity 3 inside it through the thermally conductive silicone 12 and the high thermal conductivity material layer 2. After absorbing heat, the phase change material 4 in the hollow cavity 3 undergoes a phase change process from solid to liquid. This process utilizes the latent heat characteristic of the phase change material 4, that is, it absorbs a large amount of heat during the phase change process while the temperature change is relatively small. This can significantly reduce the temperature rise rate of the oil in the main cylinder 1, effectively avoiding the degradation or even failure of the oil performance due to high temperature. When the temperature drops, the phase change material 4 will re-solidify and release the previously stored heat. This process not only realizes the recycling of heat, but also ensures that the damper maintains a good working condition in multiple working cycles, avoiding irreversible damage to the internal structure and viscous fluid of the damper due to excessive temperature. Through this unique active cooling system, the multi-stage viscous damper can not only effectively control the vibration of the structure, but also significantly extend the service life of the device and improve its reliability and economy.

[0027] The working principle and usage process of this utility model are as follows: The damper is installed in the working area through the left connector 11 and the right connector 10. When the external environment is under a small earthquake condition, the piston assembly 8 reciprocates within a small range, and the oil flows through the larger gap of the groove 5 in the middle section, resulting in a low damping force. When the external environment is under a moderate earthquake condition, the piston assembly 8 will increase its outward range of movement, and the oil needs to flow through the smaller gap of the side wall sections 6 at both ends, increasing the damping force to a medium damping force. When the external environment is under a large earthquake condition, the piston assembly 8 moves within its maximum range, and the oil flows through the smallest gap of the side wall section 6, further increasing the damping force to the maximum to meet the high load requirements. The heat generated by the damper during operation is conducted to the high thermal conductivity material layer 2 through the thermally conductive silicone 12, and then quickly transferred to the phase change material 4. After absorbing heat, the phase change material 4 changes from a solid to a liquid state, using the latent heat of phase change to significantly reduce the rate of temperature rise. When the damper stops working or the ambient temperature decreases, the phase change material 4 re-solidifies and releases the stored heat, achieving recycling.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage viscous damper with active cooling system, comprising a main oil cylinder (1), characterized in that, The outer side of the main oil cylinder (1) is fixedly connected with a high-thermal-conductivity material layer (2), the inner side of the high-thermal-conductivity material layer (2) is provided with a hollow cavity (3), the inner side of the hollow cavity (3) is filled with a phase-change material (4), the contact surface between the outer side of the main oil cylinder (1) and the high-thermal-conductivity material layer (2) is coated with thermal conductive silica gel (12), the inner side of the main oil cylinder (1) is provided with an inner groove (5), the outer side of the inner groove (5) is designed in a segmented gap, the inner side of the main oil cylinder (1) is fixedly connected with side wall segments (6) at both ends of the inner groove (5), the same connecting shaft (7) is slidably connected between the two side wall segments (6), the outer side of the connecting shaft (7) is fixedly connected with a plurality of piston groups (8), and one side of the main oil cylinder (1) is fixedly connected with an external seat (9).

2. The multi-stage viscous damper with active cooling system according to claim 1, wherein, The number of the piston groups (8) is two, which are located at both ends inside the inner groove (5), and the outer side of the piston group (8) is in abutment with the inner groove (5).

3. The multi-stage viscous damper with active cooling system according to claim 1, wherein, The end, away from the external seat (9), of the connecting shaft (7) extends out of the main oil cylinder (1) and is threadedly connected with a left connector (11).

4. The multi-stage viscous damper with active cooling system according to claim 1, wherein, The side, away from the main oil cylinder (1), of the external seat (9) is fixedly connected with a right connector (10).

5. The multi-stage viscous damper with active cooling system according to claim 1, wherein, The end, close to the external seat (9), of the connecting shaft (7) penetrates out of the main oil cylinder (1) and extends into the external seat (9).

6. The multi-stage viscous damper with active cooling system according to claim 1, wherein, The piston group (8) comprises an outer side fixedly connected with a soft gasket, and the connecting part between the side wall segment (6) and the connecting shaft (7) is fixedly connected with a sealing ring.

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