Anti-shaking device and system thereof
Through the anti-sway device of the supporting structure, load adjustment parts and buffer frequency modulation components, the vibration problem of large and tall towers is solved by utilizing inertial force and frequency adjustment, achieving a low-cost and effective tower anti-sway effect.
Patent Information
- Application Number
- CN202422694846.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing technologies for reducing the impact of wind loads on large, tall towers are costly, space-constrained, or bulky, making it difficult to effectively prevent tower vibrations and posing safety risks.
The anti-sway device adopts a supporting structure, load adjustment parts and buffer frequency modulation components to offset the vibration of the tower and reduce the sway amplitude through inertial force and frequency adjustment.
It reduces the impact of wind load on the tower, reduces the fatigue stress and safety hazards of the tower, is low-cost and easy to maintain, and is not restricted by site and volume.
Smart Images
Figure CN223422246U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of anti-sway devices, and in particular to an anti-sway device and a system thereof. Background Art
[0002] In recent years, with the completion and commissioning of large-scale petrochemical plants in coastal areas, large and tall towers have appeared one after another. Due to the large wind load in coastal areas, the impact of complex gases including wind load on towers is becoming increasingly greater. Tall towers are very prone to crosswind resonance and downwind resonance. These vibrations pose a great safety hazard to the long-term operation of the tower. Therefore, it is necessary to limit the vibration of the tower to ensure the safety of petrochemical plants.
[0003] At present, the impact of wind load on the tower body can be reduced by changing the structure and materials of the tower, but the cost is high and the production process requirements are very high; cables can also be used to control the vibration of the tower, but this method is often difficult to implement due to the size of the site space; the amplitude of shaking can also be reduced by using a tuned mass damper, but this device is large in size and is often used in large buildings, and is not suitable for relatively small tower bodies. Utility Model Content
[0004] The present disclosure is proposed in view of the above problems. The present disclosure provides an anti-sway device and a system thereof.
[0005] According to one aspect of the present disclosure, an anti-sway device is provided, comprising:
[0006] Support structure, load adjustment part and buffer frequency modulation assembly; the load adjustment part is connected to the object to be prevented from swaying through the support structure, the buffer frequency modulation assembly is arranged on the support structure, and the buffer frequency modulation assembly includes a frequency adjustment part, which is used to adjust the vibration frequency of the anti-sway device to be consistent with the vibration frequency of the object to be prevented from swaying.
[0007] Compared with the prior art, the anti-sway device in the present application includes a support structure, a load adjustment member, and a buffer frequency modulation assembly, wherein the load adjustment member is connected to the object to be prevented from swaying through the support structure, and can reduce the amplitude of the object to be prevented from swaying by its inertial force when the object to be prevented from swaying shakes. The buffer frequency modulation assembly is arranged on the support structure, and includes a frequency adjustment member for adjusting the vibration frequency of the anti-sway device to be consistent with the vibration frequency of the object to be prevented from swaying. Therefore, when an external force is applied to the object to be prevented from swaying, causing it to vibrate, it can drive the anti-sway device connected to it to vibrate together. Under the action of the frequency adjustment member, the vibration frequency of the anti-sway device can be adjusted to be consistent with the vibration frequency of the object to be prevented from swaying. On this basis, the load adjustment member will generate an inertial force in the opposite direction of the vibration of the object to be prevented from swaying due to inertia, and react to the object to be prevented from swaying, so that the vibration of the anti-sway device is slower than that of the object to be prevented from swaying, thereby making it opposite to the direction of the external force and offsetting it, so that the reaction parameters such as the vibration displacement, velocity and acceleration of the object to be prevented from swaying are greatly reduced, thereby achieving the purpose of preventing the object to be prevented from swaying. It can be seen that the anti-sway device provided by this application has a low production cost, is easy to maintain and repair, and is not limited by the site and the volume of the object to be prevented from swaying. It can reduce the impact of wind load on the object to be prevented from swaying, alleviate the fatigue stress of the object to be prevented from swaying, and eliminate the safety hazards of the object to be prevented from swaying.
[0008] According to another aspect of the present disclosure, an anti-sway system is provided, comprising:
[0009] A tower structure and a plurality of anti-sway devices arranged on the tower structure.
[0010] Compared with the prior art, the beneficial effects of the anti-sway system provided in the present application are the same as those of the above-mentioned anti-sway device, and will not be elaborated here.
[0011] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The above and other purposes, features, and advantages of the present disclosure will become more apparent through a more detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are intended to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and are not intended to limit the present disclosure. In the drawings, the same reference numerals generally represent the same components or steps.
[0013] Figure 1 is a schematic structural diagram illustrating an anti-sway device according to an embodiment of the present disclosure;
[0014] Figure 2 is a schematic structural diagram illustrating one embodiment of the anti-sway system of the present disclosure;
[0015] Figure 3 2 is another structural schematic diagram illustrating the anti-sway system according to an embodiment of the present disclosure.
[0016] Reference numerals:
[0017] 100-anti-sway device; 101-support structure; 1011-first support member; 1012-second support member; 1013-third support member; 102-load adjustment member; 103-buffer frequency modulation component; 1031-frequency adjustment member; 1032-buffer part; 1033-buffer medium; 104-first elastic member; 105-second elastic member and 200-tower structure. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solutions and advantages of the present disclosure more apparent, the following will describe in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure, and it should be understood that the present disclosure is not limited to the exemplary embodiments described herein.
[0019] In the existing technology, if the method of changing the structure and material of the tower is adopted, it will place high requirements on production costs and production processes; if cables are used to control the vibration of the tower, this method is often difficult to implement due to the size of the site space; if a tuned mass damper is used to reduce the shaking amplitude, it is not suitable for relatively small tower bodies.
[0020] In response to the above problems, the present application provides an anti-sway device, which has low production cost, is easy to maintain and repair, and is not limited by the site and the volume of the object to be prevented from swaying. It can reduce the impact of wind load on the object to be prevented from swaying, alleviate the fatigue stress of the object to be prevented from swaying, and eliminate the safety hazards of the object to be prevented from swaying. Figure 1 FIG. 1 is a schematic diagram illustrating one structural example of an anti-sway device according to an embodiment of the present disclosure. Figure 1 As shown, the anti-sway device 100 in the present application includes: a support structure 101, a load adjustment member 102 and a buffer frequency modulation assembly 103; the load adjustment member 102 is connected to the object to be prevented from swaying through the support structure 101, and the buffer frequency modulation assembly 103 is arranged on the support structure 101. The buffer frequency modulation assembly 103 includes a frequency adjustment member 1031, which is used to adjust the vibration frequency of the anti-sway device 100 to be consistent with the vibration frequency of the object to be prevented from swaying. The frequency adjustment member 1031 can be an adjustment column with an elastic member. When the object to be prevented from swaying shakes, the vibration energy generated by it can be transmitted to the elastic member in the adjustment column, thereby achieving the purpose of adjusting the vibration frequency of the anti-sway device 100 to be consistent with the vibration frequency of the object to be prevented from swaying. It should be understood that the selection of the frequency adjustment member includes but is not limited to an adjustment column with an elastic member, and can be adjusted according to actual conditions, and is not limited here.
[0021] It is understandable that the vibration frequency of the object to be prevented from swaying is related to many factors, such as the weight of the object to be prevented from swaying, the mass distribution of the medium contained in the object to be prevented from swaying, and changes in operating conditions. In other words, the vibration frequency of the object to be prevented from swaying is a variable value. In order to keep the vibration frequency of the anti-sway device 100 consistent with the vibration frequency of the object to be prevented from swaying, it is necessary to set a frequency adjustment member 1031 in the anti-sway device 100 to adjust the vibration frequency of the anti-sway device 100 at any time according to the changes in the vibration frequency of the object to be prevented from swaying. The load adjustment member 102 in this application can be a mass block or a weight. Its type and mass can be adjusted according to actual conditions. As long as it can increase the load of the anti-sway device 100 and can generate an inertial force in the opposite direction of the vibration of the object to be prevented from swaying, it is not limited here.
[0022] During specific implementation, since the load adjustment member 102 is connected to the object to be prevented from swaying through the support structure 101, and the frequency adjustment member 1031 provided on the support structure 101 can adjust the vibration frequency of the anti-sway device 100 to be consistent with the vibration frequency of the object to be prevented from swaying, when an external force is applied to the object to be prevented from swaying and causes it to vibrate, it can drive the anti-sway device 100 connected thereto to vibrate together. Under the action of the frequency adjustment member 1031, the vibration frequency of the anti-sway device 100 can be adjusted to be consistent with the vibration frequency of the object to be prevented from swaying. At this time, the load adjustment member 102 will generate an inertial force in the opposite direction to the vibration direction of the object to be prevented from swaying due to inertia, and react to the object to be prevented from swaying. This inertial force is tuned to be opposite to the direction of the external force and offset with it, so that the reaction parameters such as the vibration displacement, velocity and acceleration of the object to be prevented from swaying are greatly reduced, thereby achieving the purpose of preventing the object to be prevented from swaying. It can be seen that the anti-sway device 100 provided in the present application has a low production cost, is easy to maintain and repair, and is not limited by the site and the volume of the object to be prevented from swaying. It can reduce the impact of wind load on the object to be prevented from swaying, alleviate the fatigue stress of the object to be prevented from swaying, and eliminate the safety hazards of the object to be prevented from swaying.
[0023] In an alternative approach, such as Figure 1As shown, the support structure 101 in the present application includes a first support member 1011 and a second support member 1012. One end of the first support member 1011 is connected to the load adjustment member 102, and the buffer frequency modulation component 103 is provided on the first support member 1011. The other end of the first support member 1011 is connected to the object to be prevented from swaying through the second support member 1012. The first support member 1011 is used to support the load adjustment member 102 and the buffer frequency modulation component 103 located on the first support member 1011 to increase the stability of the load adjustment member 102 and the buffer frequency modulation component 103. When the object to be prevented from swaying shakes, the second support member 1012 is capable of transmitting the vibration energy from the object to be prevented from swaying to the first support member 1011. During this process, the first support member 1011 transmits the vibration to the load adjustment member 102 and the buffer frequency modulation component 103. The frequency adjustment component 1031 in the buffer frequency modulation component 103 can adjust the vibration frequency of the anti-sway device 100 to be consistent with the vibration frequency of the object to be prevented from swaying. The load adjustment component 102 will generate an inertial force opposite to the vibration direction due to inertia, and react to the object to be prevented from swaying, thereby offsetting part of the vibration energy and reducing the amplitude of the object to be prevented from swaying.
[0024] For example, Figure 1As shown, the buffer frequency modulation component 103 in the present application also includes a buffer portion 1032, which is connected to the first support member 1011. The buffer portion 1032 contains a buffer medium 1033, and the frequency adjustment member 1031 is arranged on the buffer portion 1032. When the object to be prevented from shaking shakes, the second support member 1012 is able to transmit the vibration energy from the object to be prevented from shaking to the first support member 1011. During this process, the buffer portion 1032 connected to the first support member 1011 can absorb part of the vibration energy through the buffer medium 1033 inside it. The buffer medium 1033 can be a gas, liquid or elastic material, etc., which can deform when subjected to external force, thereby slowing down the transmission speed and amplitude of the vibration. For example, if the buffer medium 1033 is a liquid, when the vibration is transmitted to the buffer portion 1032, the liquid will produce flow and pressure changes, and absorb the vibration energy through the viscosity and compressibility of the liquid. This buffering effect can effectively reduce the impact force transmitted to the object to be prevented from swaying, and protect the anti-sway device 100 from damage. In addition, because the anti-sway device 100 contains a liquid buffer medium, the vibration start time of the anti-sway device 100 is slower than that of the object to be prevented from swaying. By adjusting the viscosity of the buffer medium and the parameters of the frequency adjustment component 1031, the vibration of the anti-sway device 100 can be made half a frequency slower than that of the object to be prevented from swaying. In this way, the vibration frequencies of the anti-sway device 100 and the object to be prevented from swaying are the same, but the vibration directions are opposite, thereby offsetting the inertia force of the object to be prevented from swaying, and playing a role in reducing the amplitude. It can be seen that the anti-sway device 100 provided in the present application can achieve the purpose of reducing the volume and mass of the anti-sway device 100 by combining the buffer medium with solid components (for example, the load adjustment component 102 and the frequency adjustment component 1031). For example, the buffer medium can select a suitable viscosity according to the performance parameters of the frequency adjustment component 1031, so as to achieve a mutually reinforcing effect between the two and reduce the volume and mass of the anti-sway device.
[0025] Based on this, the frequency adjustment part 1031 of the anti-sway device 100 in the present application can coordinate the vibration frequency of the device with the vibration frequency of the object to be prevented from swaying, but because the buffer part 1032 contains a buffer medium 1033, the vibration of the anti-sway device 100 is slower than the vibration of the object to be prevented from swaying, and the vibration directions of the two are opposite, thereby achieving the purpose of reducing the vibration of the object to be prevented from swaying, reducing the stress condition of the object to be prevented from swaying, and thus effectively reducing the shaking of the object to be prevented from swaying.
[0026] For example, Figure 1As shown, the anti-sway device 100 of the present application further includes at least one first elastic member 104 and a third support member 1013. One end of the first elastic member 104 is connected to the first support member 1011 via the third support member 1013. The first elastic member 104 is disposed above the buffer frequency modulation assembly 103, and the other end of the first elastic member 104 abuts against the object to be prevented from swaying. In other words, when the object to be prevented from swaying shakes, a force is applied to the first elastic member 104, causing the first elastic member 104 connected to the third support member 1013 to compress. At the same time, the first elastic member 104 applies an elastic force in the opposite direction to the object to be prevented from swaying, thereby offsetting a portion of the force, causing the vibration of the anti-sway device 100 to be slower than that of the object to be prevented from swaying, and making the vibration directions of the two opposite, thereby achieving the purpose of reducing the vibration of the object to be prevented from swaying, alleviating the stress condition of the object to be prevented from swaying, and effectively reducing the sway of the object to be prevented from swaying.
[0027] It is understandable that the more the number of first elastic members 104 is, the better the anti-sway effect of the anti-sway device 100 is. Therefore, the number and number of turns of the required first elastic members 104 can be adjusted according to actual needs and are not limited here.
[0028] For example, Figure 1 As shown, the extension direction of the first support member 1011 in the present application is perpendicular to the extension direction of the second support member 1012, thereby effectively dispersing stress and improving the overall stability of the device. The extension direction of the third support member 1013 in the present application is parallel to the extension direction of the second support member 1012, which not only supports the first support member 1011, but also shares part of the force from the object to be prevented from swaying, ensuring that the device will not be deformed or damaged during operation due to excessive force on a single support member. Therefore, the mutually perpendicular and parallel support member structure can effectively limit the shaking and deviation of the anti-sway device 100 in all directions. The first support member 1011 and the third support member 1013 cooperate with the second support member 1012 in different directions to form a stable frame structure, so that the entire anti-sway device 100 can be firmly fixed on the object to be prevented from swaying, reducing unnecessary movement caused by vibration.
[0029] In an alternative approach, such as Figure 1 As shown, the anti-sway device 100 in the present application also includes a second elastic member 105, which is arranged at the end of the load adjustment member 102 close to the object to be prevented from swaying, thereby reducing the stress between the second elastic member 105 and the object to be prevented from swaying, and reducing the probability of the load adjustment member 102 hitting the object to be prevented from swaying.
[0030] This application also provides an anti-sway system. Figure 2 1 is a schematic structural diagram illustrating an anti-sway system according to an embodiment of the present disclosure. Figure 3 FIG. 1 is another structural diagram illustrating the anti-sway system of an embodiment of the present disclosure. Figure 2 and Figure 3 As shown, the system includes: a tower structure 200 and a plurality of anti-sway devices 100 provided on the tower structure 200. The radial dimension φ of the tower structure 200 can be adjusted according to actual conditions and is not limited here.
[0031] It can be understood that the vibration frequency of the tower structure in the present application is calculated based on the dynamic formula, and the deviation of the calculation result is generally relatively large; numerical simulation can also be performed based on finite element dynamics to simulate the vibration frequency of the tower structure; or a vibration measuring instrument can be used for measurement based on the actual situation on site. The results of the above three frequencies are comprehensively considered on site. In order to adjust the vibration frequency of the anti-sway device, it is necessary to compare and determine the true frequency of the tower structure based on the calculated frequency and the measured frequency of the tower structure, and calculate the vibration frequency of the anti-sway device based on the true frequency. It should be understood that the tower structure in the present application has different natural frequencies under no-load, installation, operation, maintenance and other states, so the vibration frequency of the anti-sway device in the present application is adjustable within a certain range, and the range can be adjusted according to the actual situation and is not limited here.
[0032] When implementing it specifically, Figure 2 and Figure 3 As shown, the first support member 1011 and the second support member 1012 must be installed first, and the load adjustment member 102 must be mounted to the first support member 1011 using a sling. Next, the second elastic member 105 must be installed at the end of the load adjustment member 102 near the tower structure 200. The vibration frequency of the tower structure 200 in the locked state is tested. The third support member 1013, the first elastic member 104, and the buffer 1032 are then installed, and a buffering medium 1033 is simultaneously filled into the buffer 1032. Finally, the frequency adjustment member 1031 is adjusted to determine the vibration frequency of the anti-sway device 100. After the anti-sway device 100 is installed on the tower structure 200, the vibration of the tower structure 200 under external load is significantly reduced, with no visible sway. This meets the requirements of relevant standards and specifications, reduces sway in the tower structure 200, alleviates fatigue stress in the tower structure 200, and reduces stress loads and safety hazards in the tower structure 200. It can be seen that the anti-sway device 100 in this application can be adjusted at any time according to the frequency of the tower structure 200, so that the tower structure 200 and the anti-sway device 100 are matched, thereby greatly improving the anti-sway effect of the tower structure 200.
[0033] In an alternative approach, such as Figure 2 and Figure 3As shown, the number of anti-sway devices 100 in this application is an even number. When responding to winds from different directions, the even distribution of anti-sway devices 100 can simultaneously provide reaction forces to the tower structure 200 from multiple directions, reducing the risk of sway. Furthermore, the combined action of multiple anti-sway devices 100 can disperse the force, preventing damage to a single anti-sway device 100 from excessive loads, thereby improving the reliability and durability of the entire system.
[0034] For example, Figure 2 and Figure 3 As shown, the two opposite anti-sway devices 100 in the present application are symmetrically distributed along the circumferential direction of the tower structure 200, so that the reaction forces of the anti-sway devices 100 on the tower structure 200 in various directions are more balanced.
[0035] In an alternative approach, such as Figure 2 and Figure 3 As shown, the anti-sway device 100 in the present application is arranged near the top of the tower structure 200, thereby enhancing the stability of the tower structure 200, preventing excessive shaking caused by external factors such as wind load and earthquake, and improving the operating efficiency and service life of the tower structure 200.
[0036] The above description is only a specific embodiment of the present application. Obviously, various modifications and combinations can be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these changes and variations. Any person skilled in the art who can easily think of changes or substitutions within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.
[0037] It should also be noted that in the system and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.
[0038] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.
[0039] The above description has been provided for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.
Claims
1. An anti-sway device, characterized in that: include: Support structures, load adjustment components and buffer frequency modulation components; The load adjustment member is connected to the object to be prevented from swaying through the support structure. The buffer frequency modulation component is arranged on the support structure. The buffer frequency modulation component includes a frequency adjustment member for adjusting the vibration frequency of the anti-sway device to be consistent with the vibration frequency of the object to be prevented from swaying.
2. The anti-sway device according to claim 1, wherein: The support structure includes a first support member and a second support member, one end of the first support member is connected to the load adjustment member, the buffer frequency modulation component is arranged on the first support member, and the other end of the first support member is connected to the object to be prevented from shaking through the second support member.
3. The anti-sway device according to claim 2, characterized in that: The buffer frequency modulation component further includes a buffer portion, which is connected to the first support member. The buffer portion contains a buffer medium, and the frequency adjustment member is arranged on the buffer portion.
4. The anti-sway device according to claim 3, characterized in that: The anti-sway device also includes at least one first elastic member and a third support member, one end of the first elastic member is connected to the first support member through the third support member, the first elastic member is arranged above the buffer frequency modulation component, and the other end of the first elastic member is against the object to be prevented from swaying.
5. The anti-sway device according to claim 4, characterized in that: An extending direction of the first support member and an extending direction of the second support member are perpendicular to each other, and an extending direction of the third support member and an extending direction of the second support member are parallel to each other.
6. The anti-sway device according to any one of claims 1 to 5, characterized in that: The anti-sway device further includes a second elastic member, which is provided at the end of the load adjustment member close to the object to be prevented from swaying.
7. An anti-sway system, characterized in that: include: A tower structure and a plurality of anti-sway devices according to any one of claims 1 to 6 arranged on the tower structure.
8. The anti-sway system according to claim 7, wherein: The number of the anti-sway devices is an even number.
9. The anti-sway system according to claim 7, wherein: The two opposite anti-sway devices are symmetrically distributed along the circumferential direction of the tower structure.
10. The anti-sway system according to any one of claims 7 to 9, characterized in that: The anti-sway device is arranged at a position close to the top of the tower structure.