CN220551431U - Absorption tower chimney damping device integrating tuning and damping vibration absorption - Google Patents
Absorption tower chimney damping device integrating tuning and damping vibration absorption Download PDFInfo
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- CN220551431U CN220551431U CN202321848215.XU CN202321848215U CN220551431U CN 220551431 U CN220551431 U CN 220551431U CN 202321848215 U CN202321848215 U CN 202321848215U CN 220551431 U CN220551431 U CN 220551431U
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- damping device
- absorption tower
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- 238000013016 damping Methods 0.000 title claims abstract description 76
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 52
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 30
- 230000023556 desulfurization Effects 0.000 claims abstract description 30
- 239000006096 absorbing agent Substances 0.000 claims abstract description 27
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 23
- 239000010935 stainless steel Substances 0.000 claims description 23
- 230000003009 desulfurizing effect Effects 0.000 claims description 18
- 230000035939 shock Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 101100207042 Caenorhabditis elegans unc-94 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to the technical field of chimney damping and vibration absorption, in particular to an absorber tower chimney damping device integrating tuning and damping and vibration absorption, which is arranged at the top of a desulfurization absorber tower and comprises: a support structure connected to the desulfurization absorber; a mass system connected to the support structure by a suspension system; a damping system connected between the mass system and the support structure; wherein the mass system comprises an annular counterweight structure. Compared with the traditional method of increasing the wall thickness of the tower body, controlling the inhaul cable or arranging the wind breaking ring at the chimney part, the utility model has lower manufacturing cost than the implementation cost of the scheme, simple structure and convenient manufacture, in addition, the mass block is arranged at the top of the chimney, and the natural frequency of the damping device is adjusted to be corresponding to the natural frequency of the chimney by utilizing the damping structure, thereby achieving better tuning effect and having good vibration resistance and damping performance.
Description
Technical Field
The utility model relates to the technical field of chimney damping vibration absorption, in particular to an absorber chimney vibration absorption device integrating tuning and damping vibration absorption.
Background
In a back pressure heat supply unit of a general power plant, tail flue gas is desulfurized by a wet method, the desulfurized flue gas is directly discharged from a direct exhaust chimney at the top of an absorption tower, the diameter of the circular section of the absorption tower is 9m, the diameter of the circular section of the chimney is 3.8m, the total height of the desulfurizing tower is 110m, and the high equipment height brings great test to the wind resistance of the structure.
Conventional vibration damping methods for improving the wind resistance of the structure are to increase the wall thickness of the tower body or adopt measures such as inhaul cable control, but the manufacturing cost of the tower body may be increased significantly or the method is difficult to realize because of the limitation of the space of the field. In addition, a vortex device or a tower body accessory is reasonably arranged, so that the karman vortex street is destroyed or the falling-off mode of the karman vortex street is changed, the vibration-proof and vibration-reduction effects can be achieved to a certain extent, but the actual operation cost is greatly increased, and the implementation is difficult.
Disclosure of Invention
The utility model provides an absorber chimney damping device integrating tuning and damping vibration absorption, which is arranged at the top of a desulfurization absorber, and comprises:
a support structure connected to the desulfurization absorber;
a mass system connected to the support structure by a suspension system;
a damping system connected between the mass system and the support structure;
the mass system comprises an annular counterweight structure which is arranged at the periphery of the desulfurization absorption tower, and the suspension system at least comprises two suspension ropes, wherein the suspension ropes are in a vertical state under the condition that the counterweight structure naturally sags.
Preferably, the support structure comprises an upper cantilever support and a lower cantilever support, four upper cantilever supports which are distributed around the axis of the desulfurization absorption tower in a central symmetry manner are arranged on the outer wall of the desulfurization absorption tower, a first connecting lug is arranged at the distance from the upper cantilever support to the far end of the desulfurization absorption tower, and the first ends of the four lifting ropes are respectively connected to different first connecting lugs.
Preferably, the upper cantilever bracket is perpendicular to the outer wall of the desulfurization absorption tower.
Preferably, the counterweight structure comprises an annular stainless steel plate, four first hanging points are arranged on the upper end face of the annular stainless steel plate, the four first hanging points are connected to the second end of the lifting rope, and the lengths of the lifting ropes are the same.
Preferably, the upper cantilever bracket is provided with a second connecting lug, the annular stainless steel plate is provided with a second hanging point, a safety rope is arranged between the second connecting lug and the second hanging point, and the safety rope is in a loosening state when the lifting rope is in a tightening state.
Preferably, the lower end face of the annular stainless steel plate is provided with four third hanging points, the outer wall of the desulfurization absorption tower is provided with lower cantilever supports which are distributed around the axis of the desulfurization absorption tower in a central symmetry mode, the first end of the damping system is connected to the third hanging points, and the second end of the damping system is connected to the lower cantilever supports.
Preferably, the damping system comprises four viscous dampers, each of which has a first end connected to four of the third suspension points and a second end connected to the lower cantilever bracket.
Preferably, the first end of the viscous damper is rotatable relative to the annular stainless steel plate, and the second end of the viscous damper is rotatable relative to the lower cantilever bracket.
Preferably, an anti-collision structure is arranged on the inner side of the annular stainless steel plate.
Preferably, the anti-collision structure comprises four cushion blocks, and each cushion block is positioned between two upper cantilever brackets along the axial direction of the desulfurization absorption tower.
Compared with the prior art, the utility model has the advantages that:
compared with the traditional method of increasing the wall thickness of the tower body and controlling the inhaul cable or arranging the wind breaking ring at the chimney part, the utility model has lower manufacturing cost than the implementation cost of the scheme, simple structure and convenient manufacture, in addition, the mass block is arranged at the top of the chimney, and the natural frequency of the damping device is adjusted to correspond to the natural frequency of the chimney by utilizing the damping structure, so that better tuning effect can be achieved, and good vibration resistance and damping performance are realized.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the damping device of the present utility model in the mounting position of the in-line chimney of the desulfurizing absorption tower;
FIG. 2 is a schematic view of a damping vibration attenuation device according to the present utility model;
FIG. 3 is a schematic cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a schematic cross-sectional view taken in the direction B-B of FIG. 2;
FIG. 5 is a schematic cross-sectional view taken in the direction C-C of FIG. 3;
FIG. 6 is a response chart of the in-line chimney without the damping device under the action of wind vibration;
FIG. 7 is a response chart of the in-line chimney mounted damping device under the action of wind vibration.
Detailed Description
For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.
In combination with fig. 1, the present utility model proposes an absorber chimney damping device integrating tuning and damping vibration absorption, and an important feature of the damping device 10 is that the energy consumption capacity is determined according to the relative displacement between the damping device and the installed position, so that in general, the absorber chimney damping device is installed at a position with relatively large structural displacement, and in the absorber chimney structure, the first vibration mode of the structure is mainly controlled, and the displacement of the top is large, so that the damping device 10 is disposed at the top of the desulfurizing absorber 100.
As shown in connection with fig. 2, the damping vibration attenuation apparatus 10 includes: the upper cantilever 11, the mass system 30, the suspension system 20, the damping system 40, and the lower cantilever 12, the upper cantilever 11 and the lower cantilever 12 are connected to the desulfurization absorber 100.
The mass system 30 is arranged below the upper cantilever support 11; the suspension system 20 is arranged between the mass system 30 and the upper cantilever bracket 11, a first end of the suspension system 20 is connected to the upper cantilever bracket 11, and a second end of the suspension system 20 is connected to the mass system 30; a first end of damping system 40 is connected to mass system 30 and a second end of damping system 40 is connected to lower cantilever bracket 12.
Thus, when the desulfurizing absorption tower 100 is subjected to wind vibration, the suspension system 20 pulls the mass system 30 to move when the top is displaced, and the damping effect of the damping system 40 can inhibit the shaking of the desulfurizing absorption tower 100 from developing to larger displacement and frequency, thereby playing roles of shock absorption and damping.
Further, the mass system 30 includes an annular weight structure disposed at the periphery of the desulfurization absorbing tower 100, and the suspension system 20 includes at least two suspension ropes which are in a vertical state in a state where the weight structure naturally sags.
The damping device 10 mainly absorbs vibration energy of a main vibration mode through tuning and consumes energy of other vibration modes through damping, so as to achieve the purpose of controlling the vibration amplitude of the structure. The damping device 10 can suppress vibration of the structural body in a wider frequency range, but not only acts on the tuning frequency, but also the main suppressing effect is reflected on the tuning frequency, and in order to achieve a better suppressing effect, the mass ratio of the mass system 30 to the first vibration mode of the desulfurizing absorption tower 100 is 0.01-0.1.
As shown in fig. 2-3, four upper cantilever supports 11 which are distributed around the axis of the desulfurizing absorption tower 100 in a central symmetry manner are arranged on the outer wall of the desulfurizing absorption tower 100, a first connecting lug is arranged on the far end of the upper cantilever supports 11, which is far away from the desulfurizing absorption tower 100, and the first ends of the four lifting ropes are respectively connected to different first connecting lugs.
Preferably, the upper cantilever bracket 11 is perpendicular to the outer wall of the desulfurization absorbing tower 100.
The four upper cantilever brackets 11 are used for pulling the mass system 30, so that the stability of the mass system 30, particularly the swing in all directions can be ensured, the damping effect with the swing direction of the main body of the desulfurization absorption tower 100 is formed, and the stability and the vibration resistance of the desulfurization absorption tower 100 are improved.
In an alternative embodiment, as shown in connection with fig. 4, the counterweight structure comprises an annular stainless steel plate, the upper end surface of which is provided with four first hanging points, the four first hanging points being connected to the second ends of the lifting ropes, the lengths of each lifting rope being the same.
In a preferred embodiment, in order to ensure that the stainless steel plate does not fall down to generate uncontrollable potential safety hazards after fatigue fracture of the lifting rope, a second connecting lug is arranged on the upper cantilever bracket 11, a second hanging point is arranged on the annular stainless steel plate, and a safety rope is arranged between the second connecting lug and the second hanging point, and is in a loose state when the lifting rope is in a tensioned state.
Therefore, the safety rope is not pulled in a normal state, and only plays roles of pulling and safety after the lifting rope is broken.
Further, an anti-collision structure is arranged on the inner side of the annular stainless steel plate. Preferably, the anti-collision structure includes four pads 31, each of which is located between two upper cantilever supports 11 along the axial direction of the desulfurization absorbing tower 100.
Thus, when the shaking amplitude of the annular stainless steel plate is too large, the annular stainless steel plate can be prevented from directly colliding with the surrounding desulfurization absorption tower 100, the cushion block 31 can play a role in buffering and protecting, and preferably, the cushion block 31 can be a rubber pad.
As shown in fig. 2 and 5, four third hanging points are provided on the lower end surface of the annular stainless steel plate, the lower cantilever brackets 12 distributed in a central symmetry manner around the axis of the desulfurizing absorption tower 100 are provided on the outer wall of the desulfurizing absorption tower 100, and the first end of the damping system 40 is connected to the third hanging points, and the second end is connected to the lower cantilever brackets 12.
When the vibration frequency around the desulfurizing absorption tower 100 is fixed, the damping system 40 can determine the shaking frequency of the annular stainless steel plate, and the mass ratio, the frequency ratio, the damping ratio and other parameters of the damping device of the direct exhaust chimney of the desulfurizing absorption tower and the main structure are adjusted, so that the damping system of the direct exhaust chimney of the desulfurizing absorption tower can absorb more energy, further reduce the vibration response of the main structure, and in an alternative embodiment, the damping ratio of the damping system 40 is between 0.102 and 0.103.
Preferably, damping system 40 includes four viscous dampers, each having a first end connected to the four third suspension points and a second end connected to lower cantilever bracket 12. Since both ends of the viscous damper are in an inclined state when the annular stainless steel plate is shaken, in order to keep a pulling action on the annular stainless steel plate in this posture, the first end of the viscous damper can be rotated relative to the annular stainless steel plate, and the second end of the viscous damper can be rotated relative to the lower cantilever bracket 12.
In a specific embodiment, the cross-sectional diameter of the bottom body portion of the desulfurization absorbing tower 100 is 9m, the circular cross-sectional diameter of the chimney portion is 3.8m, and the total height of the apparatus is 110m. The earthquake-proof fortification intensity of the region where the desulfurization absorption tower 100 is positioned is 7 degrees, and the basic earthquake acceleration value is designed to be 0.15g. The basic wind pressure in the region where the desulfurization absorption tower 100 is located is 0.4kN/m2, and the basic snow pressure is 0.30kN/m2.
The suspended mass block is an annular steel plate outside the wall of the chimney, four suspension points are arranged on the mass block and suspended on the cantilever beam of the chimney through the suspender, the mass block is connected to the outer wall of the chimney through the viscous damper, and the technical parameters are shown in Table 1:
TABLE 1
| Model number | Quality (t) | Frequency (Hz) | Damping ratio | Quantity of |
| TMD-1 | 0.5 | 0.725 | 0.1026 | 4 |
Referring to fig. 6 and 7, the desulfurizing absorption tower 100 is easy to generate wind-induced resonance under the excitation of transverse wind load, and the damping and damping device of the direct-discharge chimney of the desulfurizing absorption tower has good wind-induced vibration resistance effect on the direct-discharge chimney structure, so that the damage caused by the wind vibration of the chimney is effectively reduced. After the damping and shock-absorbing device of the desulfurization absorption tower in-line chimney is added, the shock absorption rate of vertex displacement reaches 79.4%, and wind-induced vibration attenuation is faster.
In combination with the embodiment, because the height of the chimney is higher, compared with the traditional method of increasing the wall thickness of the tower body, controlling the inhaul cable or arranging the wind breaking ring at the chimney part, the utility model has lower manufacturing cost than the implementation cost of the scheme, has simple structure and is beneficial to manufacturing, in addition, the mass block is arranged at the top of the chimney, and the natural frequency of the damping device is adjusted to correspond to the natural frequency of the chimney by utilizing the damping structure, so that better tuning effect can be achieved, and good vibration resistance and damping performance are realized.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (10)
1. An absorber chimney damping device integrating tuning and damping vibration absorption is arranged at the top of a desulfurization absorber (100), and is characterized in that the damping device (10) comprises:
a support structure connected to the desulfurization absorption tower (100);
a mass system (30) connected to the support structure by a suspension system (20);
a damping system (40) connected between the mass system (30) and the support structure;
the mass system (30) comprises an annular counterweight structure, the annular counterweight structure is arranged at the periphery of the desulfurization absorption tower (100), the suspension system (20) at least comprises two suspension ropes, and the suspension ropes are in a vertical state under the condition that the counterweight structure naturally sags.
2. The integrated tuning and damping vibration absorbing absorption tower chimney damping device according to claim 1, wherein the support structure comprises an upper cantilever support (11) and a lower cantilever support (12), four upper cantilever supports (11) which are distributed in a central symmetry manner around the axis of the desulfurization absorption tower (100) are arranged on the outer wall of the desulfurization absorption tower (100), a first connecting lug is arranged at the distance from the upper cantilever supports (11) to the distal end of the desulfurization absorption tower (100), and the first ends of the four lifting ropes are respectively connected to different first connecting lugs.
3. The absorber stack damper integrated with tuning and damping vibration absorption according to claim 2, wherein the upper cantilever bracket (11) is perpendicular to the outer wall of the desulfurization absorber (100).
4. The integrated tuned and damped vibration-absorbing absorber stack damping device according to claim 2, wherein the counterweight structure comprises an annular stainless steel plate, four first hanging points are arranged on an upper end surface of the annular stainless steel plate, the four first hanging points are connected to the second ends of the lifting ropes, and the lengths of the lifting ropes are the same.
5. The absorber chimney damping device integrating tuning and damping vibration according to claim 2, 3 or 4, wherein a second connecting lug is arranged on the upper cantilever bracket (11), a second hanging point is arranged on the annular stainless steel plate, a safety rope is arranged between the second connecting lug and the second hanging point, and the safety rope is in a loose state when the lifting rope is in a tensioned state.
6. The integrated tuning and damping vibration absorbing absorber stack damper of claim 4, wherein the lower end surface of the annular stainless steel plate is provided with four third hanging points, the outer wall of the desulfurizing absorber tower (100) is provided with lower cantilever supports (12) which are distributed in a central symmetry manner around the axis of the desulfurizing absorber tower (100), the first end of the damping system (40) is connected to the third hanging points, and the second end is connected to the lower cantilever supports (12).
7. The integrated tuned and damped vibration-absorbing absorber stack damping device of claim 6, wherein said damping system (40) comprises four viscous dampers, each having a first end connected to four of said third suspension points and a second end connected to said lower cantilever bracket (12).
8. The integrated tuned and damped vibration-absorbing absorber stack damping device of claim 7, wherein a first end of said viscous damper is rotatable relative to said annular stainless steel plate and a second end of said viscous damper is rotatable relative to said lower cantilever bracket (12).
9. The absorber chimney damping device integrated with tuning and damping vibration absorption according to claim 4, wherein an anti-collision structure is provided on the inner side of the annular stainless steel plate.
10. The absorber stack shock absorber of claim 9, wherein said bump guard comprises four pads (31), each of said pads being located between two upper cantilever supports (11) along the axis of the absorber stack (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848215.XU CN220551431U (en) | 2023-07-14 | 2023-07-14 | Absorption tower chimney damping device integrating tuning and damping vibration absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321848215.XU CN220551431U (en) | 2023-07-14 | 2023-07-14 | Absorption tower chimney damping device integrating tuning and damping vibration absorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551431U true CN220551431U (en) | 2024-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321848215.XU Active CN220551431U (en) | 2023-07-14 | 2023-07-14 | Absorption tower chimney damping device integrating tuning and damping vibration absorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551431U (en) |
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2023
- 2023-07-14 CN CN202321848215.XU patent/CN220551431U/en active Active
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