Tuned mass damper for chimney

Abstract

The utility model discloses a tuned mass damper for a chimney, which comprises a mass ring arranged on the periphery of a chimney cylinder; the suspension mechanism is used for suspending the mass ring on the chimney barrel and comprises a plurality of suspension assemblies arranged in the circumferential direction of the chimney barrel at intervals. The suspension assembly comprises a suspension support fixedly connected with the chimney barrel, a suspension support detachably connected with the suspension support and a suspension part, the upper end of the suspension part is detachably connected with the suspension support, and the lower end of the suspension part is detachably connected with the mass ring. And the vibration reduction mechanism is used for elastically connecting the mass ring and the chimney barrel and comprises a plurality of vibration reduction assemblies which are arranged in the circumferential direction of the chimney barrel at intervals. The tuned mass damper for the chimney provided by the utility model can solve the problem that the factory prefabricated chimney is ultra-high and ultra-wide in transportation.

Description

Technical Field

[0001] The utility model relates to the technical field of steel chimneys, in particular to a tuned mass damper for chimneys. Background Art

[0002] The cylindrical structural design of a tall steel chimney is mainly controlled by wind loads. When the frequency of vortex-induced shedding is consistent with the natural frequency of the chimney, crosswind resonance will occur and the top of the chimney will swing with a large amplitude, accelerating the accumulation of fatigue damage and making fatigue failure very likely to occur.

[0003] At present, the more commonly used vibration reduction device in the chimney industry is the tuned mass damper, which consists of a mass ring, a spring and a suspension wire rope. When the natural frequency of its damper structure system is consistent with the natural frequency of the chimney, the tuned mass damper produces vibrations that lag behind the chimney body by π / 2 phase due to its inertial mass. At this time, the vibration reduction effect is the best, and the vibration energy of the chimney body can be absorbed and dissipated to the greatest extent.

[0004] The existing tuned mass damper's wire rope suspension bracket is welded to the cylinder. For factory-prefabricated chimneys with large cylinder diameters, transportation is often too high and too wide, and it is necessary to report to the toll station in advance and work with relevant companies to dismantle some toll equipment to widen the width of the dedicated lane, resulting in increased costs and waste of social resources. Utility Model Content

[0005] In order to solve the above problems, the utility model aims to provide a tuned mass damper for a chimney, which is convenient for installation and disassembly.

[0006] Based on the above problems, the technical solution provided by the utility model is:

[0007] A tuned mass damper for a chimney, comprising:

[0008] A mass ring, which is arranged on the outer periphery of the chimney barrel;

[0009] A suspension mechanism, used for suspending the mass ring on the chimney body, comprising a plurality of suspension components arranged at intervals along the circumference of the chimney body, wherein the suspension components comprise a suspension support fixedly connected to the chimney body, a suspension bracket detachably connected to the suspension support, and a suspension component detachably connected to the suspension bracket at an upper end, wherein the lower end of the suspension component is detachably connected to the mass ring;

[0010] The vibration reduction mechanism is used for elastically connecting the mass ring and the chimney body, and comprises a plurality of vibration reduction components which are arranged at intervals along the circumference of the chimney body.

[0011] In some of the embodiments, the suspension bracket includes a top plate, an outer end plate arranged at one end of the top plate in the length direction, an inner end plate arranged at the other end of the top plate in the length direction, and side plates arranged on both sides of the width of the top plate, the inner end plate is detachably connected to the suspension support via a plurality of first bolt assemblies, and the suspension component is detachably arranged between the two side plates.

[0012] In some embodiments, the first bolt assembly includes a first screw rod and a first nut for locking the first screw rod, and a first pin hole for passing a first locking pin is provided at one end of the first screw rod close to the first nut.

[0013] In some of the embodiments, a connecting seat is provided on the mass ring, and both ends of the suspension component are detachably connected to the two side plates and the connecting seat via second bolt assemblies, and a buffer assembly is provided between the suspension component and the second bolt assembly.

[0014] In some embodiments, the second bolt assembly includes a second screw rod and a second nut for locking the second screw rod, the suspension component is sleeved on the second screw rod, and the buffer assembly includes an elastic washer arranged on both sides of the suspension component and sleeved on the second screw rod, and a buffer ring arranged between the suspension component and the second screw rod.

[0015] In some embodiments, a second pin hole for a second locking pin to pass through is provided at one end of the second screw rod close to the second nut.

[0016] In some embodiments, the vibration reduction assembly includes a spring bracket fixedly connected to the chimney body and a spring component detachably connected to the spring bracket at one end, and the other end of the spring component is detachably connected to the mass ring.

[0017] In some of the embodiments, the spring component includes a spring body and two connecting plates arranged on both sides of the spring body, and the two connecting plates are detachably connected to the spring bracket and the mass ring via a plurality of third bolt assemblies.

[0018] In some embodiments, the third bolt assembly includes a third screw rod and a third nut for locking the third screw rod, and a third pin hole for a third locking pin to pass through is provided at one end of the third screw rod close to the third nut.

[0019] In some of the embodiments, the mass ring includes a plurality of ring bodies arranged in circumferential segments, the ends of the ring bodies are provided with mass ring connecting plates extending axially, two adjacent mass ring connecting plates are detachably connected via a plurality of fourth bolt assemblies, the fourth bolt assembly includes a fourth screw rod and a fourth nut for locking the fourth screw rod, and the end of the fourth screw rod close to the fourth nut is provided with a fourth pin hole for a fourth positioning pin to pass through.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] 1. The suspension bracket and the suspension support are detachably connected. When the diameter of the chimney body is large, the suspension bracket can be disassembled for transportation, which can solve the problem of super-high and super-wide transportation of factory-fabricated chimneys and facilitate transportation;

[0022] 2. The screw rods of the bolt assemblies used on the damper are all provided with pin holes, which facilitate the use of positioning pins to lock the nuts, prevent the bolt assemblies from loosening, and improve the structural stability of the damper;

[0023] 3. A buffer component is provided between the suspension component and its matching bolt component to prevent wear of the suspension component during use, increase the service life of the damper, and ensure the vibration reduction performance of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic structural diagram of an embodiment of a tuned mass damper for a chimney according to the utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the AA section;

[0027] Figure 3 for Figure 2 Schematic diagram of the middle BB section (after rotation);

[0028] Figure 4 for Figure 2 Schematic diagram of the middle CC section (after rotation);

[0029] Figure 5 for Figure 3 Schematic diagram of the middle DD section;

[0030] Figure 6 for Figure 2A partial enlarged view of the H in the middle;

[0031] Figure 7 for Figure 6 Schematic diagram of the EE section;

[0032] Figure 8 This is a schematic diagram of the structure of the lifting ring in the embodiment of the utility model;

[0033] in:

[0034] 1. Mass ring; 1-1. Ring body; 1-2. Mass ring connecting plate; 1-3. Fourth bolt assembly; 1-3a. Fourth screw rod; 1-3b. Fourth nut; 1-3c. Fourth gasket; 1-4. Reinforcement rib; 1-5. Lifting ring;

[0035] 2. Suspension assembly; 2-1. Suspension support; 2-2. Suspension bracket; 2-2a. Top plate; 2-2b. Outer end plate; 2-2c. Inner end plate; 2-2d. Side plate; 2-3. Suspension component; 2-4. First bolt assembly; 2-4a. First screw rod; 2-4b. First nut; 2-4c. First gasket; 2-5. Second bolt assembly; 2-5a. Second screw rod; 2-5b. Second nut; 2-5c. Second gasket; 2-6. Wire rope clamp; 2-7. Elastic washer; 2-8. Buffer ring; 2-9. Suspension web;

[0036] 3. Vibration reduction assembly; 3-1. Spring bracket; 3-2. Spring component; 3-2a. Spring body; 3-2b. Connecting plate; 3-3. Third bolt assembly; 3-3a. Third screw rod; 3-3b. Third nut; 3-3c. Third gasket; 3-4. Spring bracket web;

[0037] 4. Chimney body;

[0038] 5. Connecting socket. DETAILED DESCRIPTION

[0039] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0040] like Figure 1 and Figure 2 , which is a schematic structural diagram of an embodiment of the utility model, provides a tuned mass damper for a chimney, including a mass ring 1, a suspension mechanism and a vibration reduction mechanism.

[0041] The mass ring 1 is an annular structure, which is arranged on the outer periphery of the chimney body 4 .

[0042] The suspension mechanism is used to suspend the mass ring 1 on the chimney body 4, including a plurality of suspension components 2 arranged at intervals along the circumference of the chimney body 4, such as Figure 3 and Figure 5 As shown, the suspension assembly 2 includes a suspension support 2-1 fixedly connected to the chimney body 4, a suspension bracket 2-2 detachably connected to the suspension support 2-1, and a suspension component 2-3 detachably connected to the suspension bracket 2-2 at the upper end, and the lower end of the suspension component 2-3 is detachably connected to the mass ring 1, wherein the suspension component 2-3 is a steel wire rope, both ends of the steel wire rope are bent to form a ring, and fixed with a steel wire rope clamp 2-6.

[0043] Specifically, the suspension bracket 2-2 includes a top plate 2-2a, an outer end plate 2-2b arranged at one end of the top plate 2-2a in the length direction, an inner end plate 2-2c arranged at the other end of the top plate 2-2a in the length direction, and side plates 2-2d arranged on both sides of the top plate 2-2a in the width direction, wherein the inner end plate 2-2c is detachably connected to the suspension support 2-1 via a plurality of first bolt assemblies 2-4, and the suspension component 2-3 is detachably arranged between the two side plates 2-2d. In order to facilitate the fixing of the suspension support 2-1, a suspension web 2-9 is welded on the outer wall of the chimney body 4, and the suspension support 2-1 is welded and fixed to the suspension web 2-9.

[0044] The first screw assembly 2-4 includes a first screw 2-4a and a first nut 2-4b for locking the first screw 2-4a. In order to improve the stability of the structure, a first pin hole for passing a first locking pin is provided at one end of the first screw 2-4a close to the first nut 2-4b. The first nut 2-4b is locked by the first locking pin to prevent the bolt from loosening, thereby improving the structural stability and thus improving the vibration reduction performance of the damper.

[0045] In order to improve the stability of the structure, a first gasket 2-4c is provided between the first screw rod 2-4a and the suspension support 2-1 and between the first nut 2-4b and the inner end plate.

[0046] In order to facilitate the installation of the suspension component 2-3, a connecting seat 5 is provided on the mass ring 1. The two ends of the suspension component 2-3 are detachably connected to the two side plates 2-2d and the connecting seat 5 through the second bolt assembly 2-5. A buffer assembly is provided between the suspension component 2-3 and the second bolt assembly 2-5 to reduce the wear of the suspension component 2-3, increase the service life of the damper, and ensure the vibration reduction performance of the damper.

[0047] Among them, the second bolt assembly 2-5 includes a second screw rod 2-5a and a second nut 2-5b for locking the second screw rod 2-5a, the ring of the suspension component 2-3 is sleeved on the second screw rod 2-5a, the buffer assembly includes an elastic washer 2-7 arranged on both sides of the suspension component 2-3 and sleeved on the second screw rod 2-5a, and a buffer ring 2-8 arranged between the suspension component 2-3 and the second screw rod 2-5a, and the buffer ring 2-8 is a heart-shaped ring to adapt to the shape of the ring.

[0048] In order to improve the stability of the second bolt assembly 2-5 structure, a second pin hole for a second locking pin to pass through is provided at one end of the second screw rod 2-5a close to the second nut 2-5b, and the second nut 2-5b is locked by the second locking pin to prevent the bolt from loosening. Second gaskets 2-5c can also be provided between the second screw rod 2-5a and the side plate 2-2d, between the second nut 2-5b and the side plate 2-2d, between the second screw rod 2-5a and the connecting seat 5, and between the second nut 2-5b and the connecting seat 5, respectively, to improve the stability of the structure.

[0049] The vibration reduction mechanism is used to elastically connect the mass ring 1 and the chimney body 4, and includes a plurality of vibration reduction components 3 arranged at intervals along the circumference of the chimney body 4, specifically, as Figure 4 As shown, the vibration reduction assembly 3 includes a spring bracket 3-1 fixedly connected to the chimney body 4 and a spring component 3-2 with one end detachably connected to the spring bracket 3-1, and the other end of the spring component 3-2 is detachably connected to the mass ring 1.

[0050] In order to facilitate the installation of the spring support 3-1, a spring support web 3-4 is welded to the chimney body 4, and the spring support 3-1 is welded and fixed to the spring support web 3-4.

[0051] Specifically, the spring component 3-2 includes a spring body 3-2a and two connecting plates 3-2b arranged on both sides of the spring body 3-2a. The two connecting plates 3-2b are detachably connected to the spring bracket 3-1 and the mass ring 1 through a plurality of third bolt assemblies 3-3.

[0052] The third bolt assembly 3-3 includes a third screw rod 3-3a and a third nut 3-3b for locking the third screw rod 3-3a. One end of the third screw rod 3-3a close to the third nut 3-3b is provided with a third pin hole for the third locking pin to pass through. The third nut 3-3b is locked by the third locking pin to prevent the bolt from loosening.

[0053] In order to improve the stability of the structure, a third gasket 3-3c is respectively provided between the third screw 3-3a and the spring bracket 3-1, between the third nut 3-3b and the connecting plate 3-2b, between the third screw 3-3a and the connecting plate 3-2b, and between the third nut 3-3b and the mass ring 1.

[0054] In this example, the mass ring 1 is a segmented structure, including a plurality of ring bodies 1-1 arranged in segments along the circumferential direction, such as Figure 6 and Figure 7 As shown, a mass ring connecting plate 1-2 extending in the axial direction is provided at the end of the ring body 1-1, and two adjacent mass ring connecting plates 1-2 are detachably connected via a plurality of fourth bolt assemblies 1-3. In order to facilitate lifting, a lifting ring 1-5 (such as Figure 8 shown).

[0055] The fourth bolt assembly 1-3 includes a fourth screw rod 1-3a and a fourth nut 1-3b for locking the fourth screw rod 1-3a. A fourth pin hole for a fourth positioning pin to pass through is provided at one end of the fourth screw rod 1-3a close to the fourth nut 1-3b. The fourth nut is locked by the fourth positioning pin to prevent the bolt from loosening.

[0056] In order to improve the strength of the structure, a plurality of reinforcing ribs 1 - 4 are connected between the mass ring connecting plate 1 - 2 and the mass ring 1 .

[0057] In order to improve the stability of the structure, fourth gaskets 1-3c are provided between the fourth screw rod 1-3a and the mass ring connecting plate 1-2 and between the fourth nut 1-3b and the mass ring connecting plate 1-2.

[0058] In summary, the damper is easy to disassemble and install, and is convenient for storage and transportation. At the same time, it can reduce the wear of suspension components, increase the service life of the damper, and ensure the vibration reduction performance of the damper.

[0059] The above examples are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A tuned mass damper for a chimney, characterized in that: include: A mass ring, which is arranged on the outer periphery of the chimney barrel; A suspension mechanism, used for suspending the mass ring on the chimney body, comprising a plurality of suspension components arranged at intervals along the circumference of the chimney body, wherein the suspension components comprise a suspension support fixedly connected to the chimney body, a suspension bracket detachably connected to the suspension support, and a suspension component detachably connected to the suspension bracket at an upper end, wherein the lower end of the suspension component is detachably connected to the mass ring; The vibration reduction mechanism is used for elastically connecting the mass ring and the chimney body, and comprises a plurality of vibration reduction components which are arranged at intervals along the circumference of the chimney body.

2. The tuned mass damper for chimney according to claim 1, characterized in that: The suspension bracket includes a top plate, an outer end plate arranged at one end of the top plate in the length direction, an inner end plate arranged at the other end of the top plate in the length direction, and side plates arranged on both sides of the top plate in the width direction. The inner end plate is detachably connected to the suspension support via a plurality of first bolt assemblies, and the suspension component is detachably arranged between the two side plates.

3. The tuned mass damper for chimney according to claim 2, characterized in that: The first bolt assembly includes a first screw rod and a first nut for locking the first screw rod. An end of the first screw rod close to the first nut is provided with a first pin hole for penetrating a first locking pin.

4. The tuned mass damper for a chimney according to claim 2, characterized in that: A connecting seat is provided on the mass ring, and two ends of the suspension component are detachably connected to the two side plates and the connecting seat via second bolt assemblies respectively, and a buffer assembly is provided between the suspension component and the second bolt assembly.

5. The tuned mass damper for a chimney according to claim 4, characterized in that: The second bolt assembly includes a second screw rod and a second nut for locking the second screw rod, the suspension component is sleeved on the second screw rod, and the buffer assembly includes elastic washers arranged on both sides of the suspension component and sleeved on the second screw rod, and a buffer ring arranged between the suspension component and the second screw rod.

6. The tuned mass damper for a chimney according to claim 5, characterized in that: A second pin hole for a second locking pin to pass through is provided at one end of the second screw rod close to the second nut.

7. The tuned mass damper for a chimney according to claim 1, characterized in that: The vibration reduction assembly comprises a spring bracket fixedly connected to the chimney body and a spring component detachably connected to the spring bracket at one end, and the other end of the spring component is detachably connected to the mass ring.

8. The tuned mass damper for a chimney according to claim 7, characterized in that: The spring component comprises a spring body and two connecting plates arranged on both sides of the spring body. The two connecting plates are detachably connected to the spring bracket and the mass ring via a plurality of third bolt assemblies.

9. The tuned mass damper for a chimney according to claim 8, characterized in that: The third bolt assembly includes a third screw rod and a third nut for locking the third screw rod. An end of the third screw rod close to the third nut is provided with a third pin hole for a third locking pin to pass through.

10. The tuned mass damper for a chimney according to claim 1, characterized in that: The mass ring includes a plurality of ring bodies arranged in circumferential segments, and the ends of the ring bodies are provided with mass ring connecting plates extending in the axial direction. Two adjacent mass ring connecting plates are detachably connected via a plurality of fourth bolt assemblies, and the fourth bolt assembly includes a fourth screw rod and a fourth nut for locking the fourth screw rod. An end of the fourth screw rod close to the fourth nut is provided with a fourth pin hole for a fourth positioning pin to pass through.

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