A frequency modulation damper for double-layer steel chimney

Abstract

The application relates to a frequency-regulating damper for a double-layer steel chimney, which comprises an inner cylinder, an outer cylinder, a frequency-regulating mass, a spring and a damper, the inner cylinder and the outer cylinder are coaxially arranged, the frequency-regulating mass is arranged between the inner cylinder and the outer cylinder, the spring is connected between the inner cylinder and the frequency-regulating mass, and the damper is connected between the outer cylinder and the frequency-regulating mass. The damper provided by the application is simple in structure, convenient to install and maintain, and is beneficial to improving the practicability of the application; meanwhile, the damper provided by the application can adjust the damping parameters of the damper according to the vibration frequency of the steel chimney, thereby being beneficial to guaranteeing the stability of the damping effect of the application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chimney dampers, in particular to a frequency-tunable damper for double-layer steel chimneys. BACKGROUND

[0002] With the development of industry, more and more high-rise structures such as chimneys, towers, etc. are widely used. These structures are prone to vibration under wind load, affecting their safety and stability. In order to control the vibration of the structure, a damper is usually used to consume energy and reduce vibration amplitude.

[0003] In related technologies, although there are hydraulic dampers, friction dampers and viscoelastic dampers, these dampers have the problems of difficult installation and difficult maintenance, the need for high-altitude operation, the damper effect being greatly affected by environmental temperature, wind speed and other factors, poor stability, etc. Therefore, the present application provides a frequency-tunable damper for double-layer steel chimneys. SUMMARY

[0004] In order to solve the problems in the background art, the present application provides a frequency-tunable damper for double-layer steel chimneys.

[0005] The frequency-tunable damper for double-layer steel chimneys provided by the present application adopts the following technical solution:

[0006] A frequency-tunable damper for double-layer steel chimneys, comprising an inner cylinder, an outer cylinder, a frequency-tunable mass, a spring and a damper, the inner cylinder and the outer cylinder are coaxially arranged, the frequency-tunable mass is arranged between the inner cylinder and the outer cylinder, the spring is connected between the inner cylinder and the frequency-tunable mass, and the damper is connected between the outer cylinder and the frequency-tunable mass.

[0007] By adopting the above technical solution, i.e. by providing the frequency-tunable damper for double-layer steel chimneys, it is beneficial to reduce the noise and vibration of the chimney structure, thereby improving the comfort and safety of the overall structure. At the same time, by providing the frequency-tunable mass, the energy generated by environmental changes can be absorbed and consumed, thereby ensuring the body of the double-layer steel chimney, i.e. the service life of the double-layer steel chimney provided by the present application.

[0008] Preferably, a guide device is arranged between the inner cylinder and the outer cylinder, and the guide device is used to limit the movement direction of the frequency-tunable mass, so that it can only move along the axial direction of the inner cylinder and the outer cylinder.

[0009] By adopting the technical scheme, the guide device is arranged between the inner cylinder and the outer cylinder, which is beneficial to the movement of the child along the predetermined axis, and is beneficial to the improvement of the movement function precision of the frequency modulation mass block, and is beneficial to the guarantee of the double-layer steel chimney frequency modulation damper, and is beneficial to the improvement of the stability of the device, and is beneficial to the improvement of the practicability and creativity of the device.

[0010] Preferably, the frequency modulation mass block is provided with a frequency modulation device for adjusting the mass and stiffness of the frequency modulation mass block, so as to change the damping parameters of the damper.

[0011] By adopting the technical scheme, the practicability of the application is improved, the adaptability of the application is improved, the mass and stiffness of the mass block can be adjusted according to the actual working conditions through the frequency modulation device, so that the double-layer steel chimney frequency modulation damper provided by the application can adapt to different working environments, and the performance of the damper provided by the application can be optimized.

[0012] Preferably, the number of springs and dampers is multiple, and they are uniformly distributed between the inner cylinder and the outer cylinder.

[0013] By adopting the technical scheme, the stability of the application can be guaranteed, the uniform damping effect can be achieved, and the error in the installation process can be avoided, and the service life of the application can be improved.

[0014] Preferably, the frequency modulation device adopts an electromagnetic frequency modulation device, which adjusts the mass and stiffness of the frequency modulation mass block by changing the strength of the electromagnetic field.

[0015] By adopting the technical scheme, the precise control and rapid response of the double-layer steel structure frequency modulation damper provided by the application can be realized, and the damper provided by the application can be integrated with other systems, and the practicability of the application can be improved.

[0016] Further, the frequency modulation device adopts a mechanical frequency modulation device, which adjusts the mass and stiffness of the frequency modulation mass block by changing the position of the frequency modulation mass block.

[0017] By adopting the technical scheme, the performance and adaptability of the frequency modulation can be improved, and the safety of the application can be guaranteed.

[0018] Further, the damper adopts a viscoelastic damper, which consumes energy by deforming viscoelastic material.

[0019] By adopting the technical scheme, the vibration energy can be better absorbed and dissipated, the response of the structure can be reduced, the vibration amplitude of the structure can be reduced, and the safety of the steel chimney can be improved.

[0020] Further, the damper adopts a hydraulic damper to consume energy through the flow of liquid.

[0021] By adopting the technical scheme, the damping and noise reduction effect is achieved, the environmental safety of the damper in use is ensured, and the damper is used.

[0022] Further, the damper adopts a friction damper to consume energy through the friction between friction plates.

[0023] By adopting the technical scheme, the damper has good durability, the frequency of maintenance and replacement is reduced, the cost is reduced, and the practicability of the damper is improved.

[0024] Further, the material of the inner cylinder and the outer cylinder is steel.

[0025] By adopting the technical scheme, the device is manufactured, and the practicability of the device is improved.

[0026] In summary, the present application has the following beneficial technical effects:

[0027] 1. The structure is simple, the installation and maintenance are convenient, the work can be performed at low altitude, the construction difficulty and risk are reduced, and the practicability of the damper is improved.

[0028] 2. The frequency modulation technology is adopted, the damping parameters of the damper can be automatically adjusted according to the vibration frequency of the steel chimney, the stability and reliability of the damping effect are improved.

[0029] 3. The damper has a wide frequency response range, and can effectively control the wide frequency vibration of the steel chimney under the action of wind load. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0031] Explanation of reference numerals: 1, inner cylinder; 2, outer cylinder; 3, frequency modulation mass; 4, spring; 5, damper; 6, guide device; 7, frequency modulation device. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] The application will be further described below in conjunction with the accompanying drawings Figure 1 The application will be further described below in conjunction with the accompanying drawings

[0034] Embodiment 1

[0035] A frequency-tuned damper for a double-layer steel chimney comprises an inner cylinder 1, an outer cylinder 2, a frequency-tuned mass 3, a spring 4 and a damper 5, the inner cylinder 1 and the outer cylinder 2 are coaxially arranged, the frequency-tuned mass 3 is arranged between the inner cylinder 1 and the outer cylinder 2, the spring 4 is connected between the inner cylinder 1 and the frequency-tuned mass 3, and the damper 5 is connected between the outer cylinder 2 and the frequency-tuned mass 3.

[0036] A guide device 6 is arranged between the inner cylinder 1 and the outer cylinder 2, and the guide device 6 is used to limit the movement direction of the frequency-tuned mass 3, so that the frequency-tuned mass 3 can only move along the axial direction of the inner cylinder 1 and the outer cylinder 2.

[0037] A frequency-tuning device 7 is arranged on the frequency-tuned mass 3, and the frequency-tuning device 7 is used to adjust the mass and stiffness of the frequency-tuned mass 3, so as to change the damping parameters of the damper.

[0038] The number of the spring 4 and the damper 5 is multiple, and they are uniformly distributed between the inner cylinder 1 and the outer cylinder 2.

[0039] Embodiment 2

[0040] A frequency-tuned damper for a double-layer steel chimney comprises an inner cylinder 1, an outer cylinder 2, a frequency-tuned mass 3, a spring 4 and a damper 5, the inner cylinder 1 and the outer cylinder 2 are coaxially arranged, the frequency-tuned mass 3 is arranged between the inner cylinder 1 and the outer cylinder 2, the spring 4 is connected between the inner cylinder 1 and the frequency-tuned mass 3, and the damper 5 is connected between the outer cylinder 2 and the frequency-tuned mass 3.

[0041] A guide device 6 is arranged between the inner cylinder 1 and the outer cylinder 2, and the guide device 6 is used to limit the movement direction of the frequency-tuned mass 3, so that the frequency-tuned mass 3 can only move along the axial direction of the inner cylinder 1 and the outer cylinder 2.

[0042] A frequency-tuning device 7 is arranged on the frequency-tuned mass 3, and the frequency-tuning device 7 is used to adjust the mass and stiffness of the frequency-tuned mass 3, so as to change the damping parameters of the damper.

[0043] The number of the spring 4 and the damper 5 is multiple, and they are uniformly distributed between the inner cylinder 1 and the outer cylinder 2.

[0044] Different from embodiment 1, the frequency-tuning device 7 in this embodiment adopts an electromagnetic frequency-tuning device, and the mass and stiffness of the frequency-tuned mass 3 are adjusted by changing the strength of the electromagnetic field.

[0045] Embodiment 3

[0046] A frequency-tuned damper for a double-layer steel chimney comprises an inner cylinder 1, an outer cylinder 2, a frequency-tuned mass 3, a spring 4 and a damper 5, the inner cylinder 1 and the outer cylinder 2 are coaxially arranged, the frequency-tuned mass 3 is arranged between the inner cylinder 1 and the outer cylinder 2, the spring 4 is connected between the inner cylinder 1 and the frequency-tuned mass 3, and the damper 5 is connected between the outer cylinder 2 and the frequency-tuned mass 3.

[0047] A guide device 6 is arranged between the inner cylinder 1 and the outer cylinder 2, and is used to limit the movement direction of the frequency-tuned mass 3, so that the frequency-tuned mass 3 can only move in the axial direction of the inner cylinder 1 and the outer cylinder 2.

[0048] A frequency-tuning device 7 is arranged on the frequency-tuned mass 3, and is used to adjust the mass and stiffness of the frequency-tuned mass 3, so as to change the damping parameters of the damper.

[0049] The number of the spring 4 and the damper 5 is multiple, and they are uniformly distributed between the inner cylinder 1 and the outer cylinder 2.

[0050] Different from the damper 5 in the embodiment 1 and the embodiment 2, the damper 5 in the embodiment adopts a viscoelastic damper, which consumes energy through the deformation of viscoelastic material, and has a good damping effect.

[0051] The working principle of the present application is as follows:

[0052] When the steel chimney vibrates under the action of wind load, the relative movement between the inner cylinder and the outer cylinder causes the spring and the damper to deform, thereby consuming energy and reducing the vibration amplitude. At the same time, the movement of the frequency-tuned mass also generates an inertial force, which further consumes energy. By adjusting the mass and stiffness of the frequency-tuned mass, the damping parameters of the damper can be changed, so that it can have a good damping effect at different vibration frequencies.

[0053] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0055] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made in the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A frequency-tuned damper for a double-wall steel chimney, characterized in that, It comprises an inner cylinder (1), an outer cylinder (2), a frequency-tunable mass (3), a spring (4) and a damper (5), the inner cylinder (1) and the outer cylinder (2) are coaxially arranged, the frequency-tunable mass (3) is arranged between the inner cylinder (1) and the outer cylinder (2), the spring (4) is connected between the inner cylinder (1) and the frequency-tunable mass (3), and the damper (5) is connected between the outer cylinder (2) and the frequency-tunable mass (3); A guide device (6) is arranged between the inner cylinder (1) and the outer cylinder (2), the guide device (6) is used for limiting the movement direction of the frequency-tunable mass (3), so that it can only move along the axial direction of the inner cylinder (1) and the outer cylinder (2); The frequency-tunable mass (3) is provided with a frequency-tuning device (7), the frequency-tuning device (7) is used for adjusting the mass and stiffness of the frequency-tunable mass (3), so as to change the damping parameters of the damper (5).

2. The dual-wall steel chimney frequency-tuned damper according to claim 1, characterized in that, The number of the spring (4) and the damper (5) is multiple, and they are uniformly distributed between the inner cylinder (1) and the outer cylinder (2).

3. The dual-wall steel chimney frequency-tuned damper according to claim 2, characterized in that, The frequency-tuning device (7) adopts an electromagnetic frequency-tuning device (7), and the mass and stiffness of the frequency-tunable mass (3) are adjusted by changing the strength of the electromagnetic field.

4. The dual-wall steel chimney frequency-tuned damper according to claim 1, characterized in that, The frequency-tuning device (7) adopts a mechanical frequency-tuning device (7), and the mass and stiffness of the frequency-tunable mass (3) are adjusted by changing the position of the frequency-tunable mass (3).

5. The dual-wall steel chimney frequency-tuned damper according to any of the claims 1-4, characterized in that, The material of the inner cylinder (1) and the outer cylinder (2) is steel.

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