Chimney damping device
By installing damping components and fixed bases on the outer periphery of the chimney and using traction cables to keep the elastic damper in a compressed state, the problem of increased load on the tuned mass damper was solved, thus achieving both chimney stability and damping effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, tuned mass dampers increase the load in chimney vibration reduction, leading to increased chimney wall thickness design requirements and structural instability issues.
Vibration damping components and fixed seats are installed on the outer periphery of the chimney and connected by traction cables to keep the elastic damper in a compressed state, converting the bending deformation of the chimney into effective movement of the elastic damper, so as to consume energy and reduce vibration deformation.
This reduces the requirements for chimney wall thickness, avoids additional loads, improves chimney stability, and effectively mitigates vibration.
Smart Images
Figure CN224048427U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to chimney shock absorption technical field, concretely relates to a new type damping energy dissipation device suitable for high flexible tower cylinder which utilizes inhaul cable to connect tower body bending deformation and damping device placed on the ground. BACKGROUND
[0002] The chimney shock absorption device is a device for reducing vibration of a chimney under the action of external factors such as wind load and earthquake. Common chimney shock absorption devices include a tuned mass damper, a liquid damper, an eddy current damper, and a viscoelastic damper. Currently, a traditional tuned mass damper is generally used in industrial chimneys for vibration control. The tuned mass damper usually consists of a mass block, a spring, a damper, and a connecting member. When the chimney is excited by external excitation and vibrates, the mass block generates an inertial force opposite to the vibration direction of the chimney, thereby consuming and canceling part of the vibration energy, so as to reduce the vibration amplitude of the chimney.
[0003] Although the traditional tuned mass damper has a certain damping effect on the structure, the vertical load generated by the additional mass not only increases the chimney wall thickness design requirement and the foundation load, but also produces an additional load on the structure when installed near the top of the chimney, resulting in a prominent P-delta effect and adversely affecting the overall stability of the structure. SUMMARY
[0004] The chimney shock absorption device provided by the utility model embodiment aims to solve the technical problem of increasing the load of the chimney and reducing its stability by using a tuned mass damper for chimney shock absorption in the prior art.
[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a chimney shock absorption device, comprising:
[0006] A damping assembly is arranged on the outer circumferential surface of the chimney. The damping assembly comprises a support frame and an elastic damper arranged in the support frame. The support frame comprises a support plate and a pressing plate located above the support plate. The support plate is used to connect with the chimney.
[0007] A fixing seat is arranged on the outer circumferential surface of the chimney and located below the damping assembly.
[0008] A traction cable is connected to one end of the pressing plate and the other end of the fixing seat. The traction cable is used to pull the pressing plate to exert downward pressure on the elastic damper, so that the elastic damper remains in a compressed state.
[0009] In a possible implementation, the damping assemblies are arranged in sequence along the up-down direction, and multiple damping assemblies form a damping unit. The fixing seat is located below the damping assemblies. The traction ropes are arranged in one-to-one correspondence with the damping assemblies, and the bottom end of each traction rope is connected to the fixing seat, and the top end is connected to the top of the support frame. The traction ropes enable the support frame to exert downward pressure on the elastic damper.
[0010] In a possible implementation, the damping units are arranged along the circumference of the chimney, and multiple damping units are distributed in a ring shape around the outer periphery of the chimney. The fixing seat is arranged in one-to-one correspondence with the damping units.
[0011] In a possible implementation, the damping assemblies are arranged in a ring shape along the outer periphery of the chimney, and multiple support plates are connected to form a ring structure with the head connected to the tail. Multiple elastic dampers are distributed and connected in the ring structure formed by the multiple support plates.
[0012] In a possible implementation, the damping assembly further comprises a guide seat connected to the outer wall of the chimney. The guide seat has a guide rail extending along the up-down direction. The pressing plate is slidingly connected to the guide rail for exerting extrusion force on the elastic damper.
[0013] In a possible implementation, the elastic damper comprises an elastic member and a bellows sleeved outside the elastic member. The elastic member is connected to the support plate and the pressing plate, respectively. The bellows are distributed and sealingly connected to the support plate and the pressing plate, and the elastic member is in a compressed state.
[0014] In a possible implementation, the fixing seat comprises a fixing plate connected to the chimney and a traction plate connected to the fixing plate. The traction plate is provided with a traction hole. The fixing seat further comprises a buffer washer inserted into the traction hole. The buffer washer is a flexible member. The traction rope is inserted into the buffer washer.
[0015] In a possible implementation, the support plate has a mounting surface adapted to the outer periphery of the chimney. The mounting surface is attached to the outer wall of the chimney and is fixedly connected to the outer wall of the chimney.
[0016] In a possible implementation, the pressing plate is provided with a through mounting hole. One end of the traction rope is inserted into the mounting hole and is fixedly connected to the pressing plate.
[0017] In a possible implementation, the chimney damping device further comprises a fastening block arranged on the outer wall of the chimney. The fixing seat is provided with a fastening groove adapted to the fastening block. The fastening groove is a semi-closed groove body with an open top and is inserted into the fastening block in the up-down direction.
[0018] The chimney damping device provided by the utility model compares prior art, damping assembly and fixed seat are arranged on the outer circumferential surface of the chimney, the fixed seat and the damping assembly are connected by using a traction cable, the traction cable is in a tension state, the pressing plate is pulled downward, the pressing plate exerts pressure on the elastic damper, and the elastic damper is ensured to be in a compressed state. When vortex-induced resonance occurs in the chimney, the chimney will produce corresponding deformation, so that the elastic damper produces corresponding deformation, and the traction cable pulls the fixed seat and the pressing plate, the damping of the chimney is increased, and the vibration deformation amount is reduced. The utility model converts the bending deformation of the chimney into effective movement of the elastic damper, so that energy is concentrated and dissipated, and the vibration of the chimney is relieved. Moreover, compared with the traditional tuned mass damper, the mass block does not need to be arranged, the requirement on the wall thickness of the chimney is reduced, additional additional load is avoided, and the stability of the chimney is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The utility model provides chimney damping device's front view for embodiment one of the utility model;
[0020] Figure 2 The utility model provides chimney damping device's plan view for embodiment two of the utility model;
[0021] Figure 3 The utility model provides fixed seat's front view for embodiment three of the utility model.
[0022] BRIEF DESCRIPTION OF DRAWINGS
[0023] 1, chimney;2, damping assembly;201, support frame;2011, pressing plate;2012, support plate;202, elastic damper;3, fixed seat;301, fastening groove;302, traction hole;4, traction cable. DETAILED DESCRIPTION
[0024] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clear and apparent, the utility model is further described in detail in the following in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.
[0025] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, without necessarily implying a particular order or sequence. Other terms such as "center", "horizontal", "vertical", "horizontal", "vertical", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. are used to indicate the orientation or positional relationship based on the orientation and position relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as limiting the specific protection scope of the present application.
[0026] In the claims, the specification, and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" should be broadly understood as any connection mode between the two without displacement relationship and relative rotation relationship, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.
[0027] In the claims, the specification, and the drawings of the present application, the terms "include", "have" and their variants are intended to mean "include but not limited to".
[0028] If necessary, briefly describe the structure of the prior art or the professional terms used, the existing technical problems, the source of the problems, the principle or concept of solving the above technical problems.
[0029] Please refer to Figures 1 to 3 , now the chimney damping device provided by the utility model will be described. The chimney damping device comprises a damping assembly 2, a fixed seat 3 and a traction cable 4, the damping assembly 2 is arranged on the outer circumferential surface of a chimney 1, the damping assembly 2 comprises a support frame 201 and an elastic damper 202 arranged in the support frame 201, the support frame 201 comprises a support plate 2012 and a pressing plate 2011 located above the support plate 2012, and the support plate 2012 is used to be connected with the chimney 1; the fixed seat 3 is arranged on the outer circumferential surface of the chimney 1 and located below the damping assembly 2; one end of the traction cable 4 is connected to the pressing plate 2011, and the other end is connected to the fixed seat 3, and the traction cable 4 is used to pull the pressing plate 2011 to exert downward pressure on the elastic damper 202, so that the elastic damper 202 remains in a compressed state.
[0030] Compared with the prior art, the chimney damping device provided by the embodiment is provided with a damping assembly 2 and a fixing seat 3 on the outer circumferential surface of the chimney 1, and the fixing seat 3 and the damping assembly 2 are connected by using a traction cable 4, the traction cable 4 is in a tension state, the pressing plate 2011 is pulled downward, the pressing plate 2011 exerts pressure on the elastic damper 202, and the elastic damper 202 is ensured to be in a compressed state. When vortex-induced resonance occurs in the chimney 1, the chimney 1 will produce corresponding deformation, so that the elastic damper 202 produces corresponding deformation, and the traction cable 4 pulls the fixing seat 3 and the pressing plate 2011, thereby increasing the damping of the chimney 1 and reducing the vibration deformation amount. The bending deformation of the chimney 1 is converted into effective movement of the elastic damper 202 in the utility model, so that energy is concentrated and dissipated, and the vibration of the chimney 1 is relieved. Moreover, compared with the traditional tuned mass damper, the utility model does not need to be provided with a mass block, the requirement for the wall thickness of the chimney 1 is reduced, additional additional load is avoided, and the stability of the chimney 1 is improved.
[0031] Optionally, the traction cable 4 is a steel wire rope or other rope with deformation ability.
[0032] In some embodiments, referring to Figure 1 and Figure 2 , a plurality of damping assemblies 2 are sequentially and spacedly arranged in the up-down direction, the plurality of damping assemblies 2 form a damping unit, the fixing seat 3 is located below the damping assembly 2, the traction cable 4 is arranged in one-to-one correspondence with the damping assembly 2, and the bottom end of each traction cable 4 is connected to the fixing seat 3 and the top end is connected to the top of the support frame 201, so that the support frame 201 exerts downward pressure on the elastic damper 202.
[0033] The damping assembly 2 is arranged in one-to-one correspondence with the traction cable 4, each damping assembly 2 is connected to the fixing seat 3 through the corresponding traction cable 4, so that the plurality of damping assemblies 2 in the same damping unit are arranged in multiple stages in series, the damping of the chimney 1 is increased, and the deformation of the chimney 1 caused by vortex-induced resonance is relieved. In addition, in the embodiment, the traction cables 4 connected to the same damping unit are connected to the same fixing seat 3, the number of fixing seats 3 is reduced, the bearing capacity of the chimney 1 is avoided to be increased, and the requirements for the wall thickness and strength of the chimney 1 are reduced.
[0034] In some embodiments, referring to Figures 1 to 2 , a plurality of damping units are arranged along the circumference of the chimney 1, the plurality of damping units are annularly distributed on the outer circumference of the chimney 1, and the fixing seat 3 is arranged in one-to-one correspondence with the damping unit.
[0035] In the embodiment, the plurality of damping units are uniformly distributed along the circumference of the chimney 1, the circumferential deformation of the chimney 1 is ensured to be uniform, the deformation of the chimney 1 caused by vortex-induced resonance at each position can be relieved, the vibration amplitude of the chimney 1 is reduced, and the chimney 1 is avoided to be damaged due to vibration.
[0036] In some embodiments, referring toFigure 2 The plurality of shock-absorbing assemblies 2 are annularly distributed along the outer circumferential surface of the chimney 1, and the plurality of support plates 2012 are connected to each other to form a ring structure connected head to tail, and the plurality of elastic dampers 202 are distributed and connected in the ring structure formed by the plurality of support plates 2012.
[0037] The plurality of support plates 2012 are connected head to tail to form a ring structure as a whole, and are connected to the outer wall of the chimney 1, which not only increases the contact area with the chimney 1 and improves the firmness and stability of the connection, but also makes the stress of the outer wall of the chimney 1 uniform, avoiding the problem of local stress concentration. In addition, the overall structure of the support plate 2012 can also make other elastic dampers 202 produce corresponding linkage through the support plate 2012 after one of the elastic dampers 202 is deformed, thereby improving the overall shock-absorbing effect.
[0038] In some embodiments, referring to Figure 1 The shock-absorbing assembly 2 further comprises a guide seat connected to the outer wall of the chimney 1, the guide seat has a guide rail extending in the up-down direction, and the pressing plate 2011 is slidingly connected to the guide rail for applying extrusion force to the elastic damper 202.
[0039] The pressing plate 2011 is slidingly connected to the guide rail in the up-down direction, thereby limiting the movement path of the pressing plate 2011 and ensuring that the pressing plate 2011 moves in the up-down direction, thereby applying downward pressure to the elastic damper 202, avoiding the displacement of the pressing plate 2011 causing the elastic damper 202 to be offset by stress, and thereby increasing the deformation amount of the chimney 1.
[0040] In some embodiments, referring to Figure 1 The elastic damper 202 comprises an elastic member and a bellows sleeve set outside the elastic member, the elastic member is connected to the support plate 2012 and the pressing plate 2011 respectively, the bellows sleeve is sealingly connected to the support plate 2012 and the pressing plate 2011, and the elastic member is in a compressed state.
[0041] The bellows sleeve is set outside the elastic damper 202 to avoid dust or water from entering the elastic damper 202 and affecting the deformation ability of the elastic damper 202, ensuring that the elastic damper 202 is in a clean environment. In addition, the bellows sleeve has good stretching ability and will not affect the normal operation of the elastic damper 202. Moreover, the bellows sleeve has a small mass, avoiding increasing the additional load of the chimney 1.
[0042] In some embodiments, referring to Figure 1 The fixing seat 3 comprises a fixing plate connected to the chimney 1 and a traction plate connected to the fixing plate, the traction plate is provided with a traction hole 302, and the fixing seat 3 further comprises a buffer washer inserted into the traction hole 302, the buffer washer is a flexible member, and the traction cable 4 is inserted into the buffer washer.
[0043] The traction cable 4 is arranged in the buffer washer and is fixedly connected with the traction plate, so that the connection of the traction cable 4 is firm and reliable. The design of the buffer washer avoids rigid contact between the traction cable 4 and the traction plate, reduces the wear of the traction cable 4 and prolongs the service life of the traction cable 4.
[0044] Optionally, the buffer washer is a rubber component.
[0045] Optionally, the fixed plate is welded or screwed to the chimney 1.
[0046] In some embodiments, referring to Figure 2 The support plate 2012 has a mounting surface adapted to the outer circumferential surface of the chimney 1, and the mounting surface is attached to the outer wall of the chimney 1 and is fixedly connected with the outer wall of the chimney 1.
[0047] In the embodiment, the mounting surface is attached to the outer wall of the chimney 1, so that the contact area with the chimney 1 is increased, the firmness of the connection is improved, and the pressure at the connection of the chimney 1 is reduced, so that damage of the chimney 1 caused by local stress concentration is avoided.
[0048] Optionally, when the chimney 1 is a cylindrical component, the mounting surface is an arc surface adapted to the chimney 1.
[0049] In some embodiments, referring to Figure 1 The traction cable 4 is arranged in the mounting hole of the pressing plate 2011 and is fixedly connected with the pressing plate 2011.
[0050] The traction cable 4 is knotted and fixed after passing through the mounting hole, so that the wireless external connecting component can be connected with the pressing plate 2011 and the connection is more reliable.
[0051] In some embodiments, referring to Figure 3 The chimney damping device further comprises a fastening block arranged on the outer wall of the chimney 1, and the fixing seat 3 is provided with a fastening groove 301 adapted to the fastening block. The fastening groove 301 is a semi-closed groove body with an open top and is inserted and matched with the fastening block in the upward and downward directions.
[0052] The fastening block is integrally formed with the chimney 1 or is welded to the chimney 1, so that the connection with the chimney 1 is more reliable. The fastening groove 301 of the fixing seat 3 is inserted into the fastening groove 301, and then the fixing seat 3 is welded to the fastening block and the chimney 1, so that the fixing seat 3 is limited in the circumferential and radial directions, and the installation reliability of the fixing seat 3 is improved.
[0053] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A chimney damping device, characterized in that The chimney damping device comprises a damping assembly arranged on the outer circumferential surface of the chimney, a fixed seat arranged below the damping assembly, and a traction cable connected to the fixed seat and the damping assembly. The damping assembly comprises a support frame and an elastic damper arranged in the support frame. The support frame comprises a support plate and a pressing plate arranged above the support plate. The support plate is used to connect with the chimney.
2. A chimney fender as claimed in claim 1, characterised in that The traction cable is used to pull the pressing plate to apply downward pressure on the elastic damper, so that the elastic damper is kept in a compressed state.
3. A chimney fender as claimed in claim 2, characterised in that A plurality of damping assemblies are arranged in sequence along the up-down direction.
4. The chimney damping device of claim 1, wherein The fixed seat is arranged below the damping assemblies.
5. The chimney damping device of claim 1, wherein The traction cable is arranged in one-to-one correspondence with the damping assemblies.
6. The chimney damping device of claim 1, wherein The bottom end of each traction cable is connected to the fixed seat, and the top end is connected to the top of the support frame.
7. The chimney damping device of claim 1, wherein The traction cable applies downward pressure on the elastic damper through the support frame.
8. The chimney damping device of claim 1, wherein The damping unit is arranged in a ring shape around the chimney.
9. The chimney damping device of claim 1, wherein The fixed seat is arranged in one-to-one correspondence with the damping units.
10. The chimney damping device of claim 1, wherein The damping assembly is arranged in a ring shape around the outer circumferential surface of the chimney. The support plates are connected to each other to form a ring structure. The elastic damper is arranged in the ring structure formed by the support plates. The damping assembly further comprises a guide seat connected to the outer wall of the chimney. The guide seat has a guide rail extending in the up-down direction. The pressing plate is slidingly connected to the guide rail to apply extrusion force on the elastic damper. The elastic damper comprises an elastic member and a bellows arranged outside the elastic member. The elastic member is connected to the support plate and the pressing plate. The bellows is sealingly connected to the support plate and the pressing plate. The elastic member is in a compressed state. The fixed seat comprises a fixed plate connected to the chimney and a traction plate connected to the fixed plate. The traction plate has a traction hole. The fixed seat further comprises a buffer washer inserted into the traction hole. The buffer washer is a flexible member. The traction cable is arranged in the buffer washer. The support plate has a mounting surface adapted to the outer circumferential surface of the chimney. The mounting surface is attached to the outer wall of the chimney and is fixedly connected to the outer wall of the chimney. The pressing plate has a through mounting hole. One end of the traction cable is arranged in the mounting hole and is fixedly connected to the pressing plate. The chimney damping device further comprises a fastening block arranged on the outer wall of the chimney. The fixed seat has a fastening groove adapted to the fastening block. The fastening groove is a semi-closed groove with an open top and is inserted into the fastening block in the up-down direction.