CN220452603U - Pilot-operated vibration damping noise-reducing frequency modulation mass damper for transformer substation reactor unit - Google Patents
Pilot-operated vibration damping noise-reducing frequency modulation mass damper for transformer substation reactor unit Download PDFInfo
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- CN220452603U CN220452603U CN202322074032.3U CN202322074032U CN220452603U CN 220452603 U CN220452603 U CN 220452603U CN 202322074032 U CN202322074032 U CN 202322074032U CN 220452603 U CN220452603 U CN 220452603U
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- 238000013016 damping Methods 0.000 title claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
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- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a pilot vibration damping noise reduction frequency modulation mass damper of a transformer substation reactor unit, which belongs to the technical field of building vibration damping and comprises a main structure and a substructure, wherein the main structure comprises an upper top plate, a lower bottom plate and a main spring; the upper top plate is used for placing the reactor unit, and 4 main springs are arranged between the upper top plate and the lower bottom plate; the mass block is arranged between the upper top plate and the lower bottom plate, a middle hole is formed in the center of the mass block, a viscous damper is arranged in the middle hole, the viscous damper penetrates through the middle hole, and the upper end and the lower end of the viscous damper are respectively connected and fixed with the upper top plate and the lower bottom plate; 4 guide springs are arranged between the lower part of the mass block and the lower bottom plate. The novel damping device is compact in structure, the pilot spring with lower rigidity is added below the mass block, initial thrust for pushing the main spring to start is increased, the main spring can quickly enter into a working state, and the substructure is guided to normally play a damping role.
Description
Technical Field
The utility model belongs to the technical field of building vibration reduction, and particularly relates to a pilot vibration reduction noise reduction frequency modulation mass damper for a transformer substation reactor unit.
Background
For a long time, the high-frequency vibration and the high-decibel noise of the transformer substation reactor unit cause very bad influence on surrounding working and living environments. Therefore, the screen-jumping mass damper is arranged on the transformer substation reactor unit to play a role in shock absorption.
The existing frequency modulation mass damper consists of a main structure and a substructure attached to the main structure. The substructure, namely the TMD, comprises a mass block, a spring, a viscous damper and the like, and has the comprehensive characteristics of mass, rigidity and damping force, so that the self-vibration frequency of the substructure is close to the basic frequency and the excitation frequency of the main structure, and when the structure is excited to vibrate, the substructure generates an inertia force opposite to the main structure to act on the main structure body, so that the vibration reaction of the main structure is restrained, damped and controlled.
Compared with a common building structure, the transformer substation reactor unit has a much higher vibration frequency, and if the common TMD working principle is adopted to prepare the weight of the mass block, the rigidity and the damping force of the spring, the TMD can not make a normal response after being excited by the main structure due to the overlarge spring rigidity, even the TMD is completely motionless, and the vibration reduction effect is not achieved.
Disclosure of Invention
In order to solve the problems, the utility model discloses a pilot vibration damping noise reduction frequency modulation mass damper for a transformer substation reactor unit, which uses smaller rigidity to form a substructure guide unit, and the main structure with high rigidity is stimulated to overcome the starting force of initial vibration so as to realize the purpose of integral vibration damping.
In order to achieve the above purpose, the specific technical scheme of the application is as follows:
the pilot type vibration damping noise reduction frequency modulation mass damper of the transformer substation reactor unit comprises a main structure and a substructure, wherein the main structure comprises an upper top plate, a lower bottom plate and a main spring, and the substructure comprises a mass block, a viscous damper and a pilot spring; the upper top plate is used for placing the reactor unit, and 4 main springs are arranged between the upper top plate and the lower bottom plate; the mass block is arranged between the upper top plate and the lower bottom plate, a middle hole is formed in the center of the mass block, a viscous damper is arranged in the middle hole, the viscous damper penetrates through the middle hole, the upper end and the lower end of the viscous damper are respectively connected and fixed with the upper top plate and the lower bottom plate, and the viscous damper is positioned in the middle position of the vertical direction of the upper top plate and the lower bottom plate; 4 guide springs are arranged between the lower part of the mass block and the lower bottom plate.
Based on the technical characteristics, further, a spring screw head is arranged at the joint of the main spring and the upper top plate and the lower bottom plate, the main spring is screwed with the spring screw head, and the spring screw head is fixedly connected with the upper top plate and the lower bottom plate through screws.
Based on the technical characteristics, further, the viscous damper is fixedly connected with the screw of the lower bottom plate, and the viscous damper is connected with the upper top plate by adopting a spherical hinge, so that the phenomenon of blocking during radial vibration is prevented.
Based on the technical characteristics, a pilot spring guide rod is further arranged between the upper end of the pilot spring and the mass block, and the lower end of the pilot spring is fixedly connected with the lower bottom plate through screws.
Based on the technical characteristics, preferably, 4 adjusting springs are arranged around the mass block.
Based on the technical features, further, the adjusting springs are symmetrically arranged along the center point of the mass block.
Based on the technical characteristics, further, the sum of the rigidity of the main springs is 60% of the total rigidity, and the sum of the rigidity of the pilot springs is 40% of the total rigidity.
Based on the technical characteristics, the weight of the mass block is preferably 2-3% of the weight of the reactor unit.
Compared with the prior art, the beneficial effects of this application are:
1. a pilot spring with lower rigidity is added below the mass block, so that the mass block is vibrated slightly to guide the whole TMD device to normally function;
2. by reasonably setting the proportion of the total rigidity, the main spring and the regulating spring are ensured to cooperate in working, so that the system is stable and reliable, and overshoot or resonance phenomenon is not easy to generate;
3. the adjusting spring of this scheme arranges in a flexible way, can adjust according to actual need, consequently is applicable to the reactor unit of different models and quality, has higher commonality.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a pilot vibration damping noise reduction frequency modulation mass damper of a transformer substation reactor unit;
fig. 2 is a schematic diagram of a top view structure of a pilot vibration damping noise reduction frequency modulation mass damper of a transformer substation reactor unit;
list of drawing identifiers:
1. an upper top plate; 2. a mass block; 3. a viscous damper; 4. a pilot spring guide rod; 5. A mass block bottom plate; 6. A pilot spring; 7. a lower base plate; 8. a main spring; 9. an adjusting spring; 10. a spring screw head; 11. reactor unit, 12, screw.
Detailed Description
The utility model will be further elucidated with reference to the following figures 1-2 and specific embodiments, which should be understood as being merely illustrative of the utility model and not limiting the scope thereof.
It should be noted that the words "upper", "lower", "left", "right", "front" and "rear" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
As shown in fig. 1 and 2, the pilot vibration damping noise reduction frequency modulation mass damper for the transformer substation reactor unit comprises a main structure and a substructure, wherein the main structure comprises an upper top plate 1, a lower bottom plate 7 and main springs 8, the upper top plate 1 is used for placing a reactor unit 11, the upper top plate 1 and the lower bottom plate 7 are arranged in parallel, and 4 main springs 8 are preferably arranged between the upper top plate 1 and the lower bottom plate 7. The main springs 8 are arranged at four corners of the upper top plate and the lower bottom plate. The connection part of the main spring 8 and the upper top plate 1 and the lower bottom plate 7 is provided with a spring screw head 10, the main spring 8 is screwed with the spring screw head 10, and the spring screw head 10 is fixedly connected with the upper top plate 1 and the lower bottom plate 7 through screws 12.
The substructure comprises a mass block 2, a viscous damper 3 and a pilot spring 4; the mass block 2 is arranged between the upper top plate 1 and the lower bottom plate 7, a middle hole is formed in the center of the mass block 2, a viscous damper 3 is arranged in the middle hole, the viscous damper 3 penetrates through the middle hole, the upper end and the lower end of the viscous damper are respectively connected and fixed with the upper top plate 1 and the lower bottom plate 7, and the viscous damper 3 is positioned at the middle position of the vertical direction of the upper top plate and the lower bottom plate. The viscous damper 3 is fixedly connected with the lower bottom plate 7 by using a screw 12, and the viscous damper 3 is connected with the upper top plate 1 by using a spherical hinge, so that the phenomenon of blocking during radial vibration is prevented.
The viscous damper and the mass block in the substructure cannot have any gap, so that the substructure is sensitive in response, high in reliability, good in sealing performance and long in service life, and can help the substructure to attenuate vibration reaction efficiency.
4 pilot springs 6 are arranged between the lower part of the mass block 2 and the lower bottom plate 7, and the 4 pilot springs 6 are symmetrically distributed at four corners of the mass block 2. A pilot spring guide rod 4 is arranged between the upper end of the pilot spring 6 and the mass block 2, and the lower end of the pilot spring 6 is fixedly connected with the lower bottom plate 7 through a screw 12.
The sum of the stiffness of the pilot springs is 40% of the total stiffness, and since the pilot spring stiffness is relatively small, the pilot spring is relatively sensitive to excitation frequency vibrations conducted from the main structure.
4 adjusting springs 9 are arranged around the mass block, and the adjusting springs 9 are symmetrically arranged along the center point of the mass block 2. The natural frequency of the unit can be adjusted by introducing the adjusting spring so as to adapt to excitation of different frequencies, thereby improving the frequency modulation quality and ensuring that the unit can keep better vibration stability under different working conditions. The total stiffness of the pilot spring is 40% + the total stiffness of the main spring is 60% = 100% of theoretical total stiffness, but the theoretical sensitivity deviates from the actual situation, so that 4 adjusting springs are introduced, the total stiffness is about 40%, the upper end of each adjusting spring is only required to be fixedly connected with the upper top plate 1 during installation, the lower end is temporarily disconnected, namely the lower end does not play a role, when debugging is needed, if the test finds that the total stiffness of the pilot spring and the main spring is insufficient, the adjusting springs 9 are fixedly connected with the lower bottom plate 7 one by one, the stiffness is gradually increased until the stiffness requirement is met, and the adjusting springs play a role at the moment.
In summary, the structure of the hydraulic damper is compact, the pilot spring with lower rigidity is added below the mass block, the initial thrust for pushing the starting of the main spring is increased, the main spring can enter the working state faster, and the substructure is guided to normally play a role in damping.
It should be noted that the drawings merely illustrate the technical idea of the utility model and the shape is not intended to limit the scope of the utility model, and those skilled in the art can make several improvements and modifications without departing from the principles of the utility model, which fall within the scope of the claims of the utility model.
Claims (8)
1. The utility model provides a transformer substation's reactor unit guide formula vibration damping noise reduction frequency modulation mass damper, includes main structure and substructure, its characterized in that: the main structure comprises an upper top plate, a lower bottom plate and a main spring, and the sub-structure comprises a mass block, a viscous damper and a pilot spring; the upper top plate is used for placing the reactor unit, and 4 main springs are arranged between the upper top plate and the lower bottom plate; the mass block is arranged between the upper top plate and the lower bottom plate, a middle hole is formed in the center of the mass block, a viscous damper is arranged in the middle hole, the viscous damper penetrates through the middle hole, the upper end and the lower end of the viscous damper are respectively connected and fixed with the upper top plate and the lower bottom plate, and the viscous damper is positioned in the middle position of the vertical direction of the upper top plate and the lower bottom plate; 4 guide springs are arranged between the lower part of the mass block and the lower bottom plate.
2. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: the main spring is connected with the upper top plate and the lower bottom plate in a screwing way, and the spring screw is fixedly connected with the upper top plate and the lower bottom plate through screws.
3. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: the viscous damper is fixedly connected with the lower bottom plate through screws, and is connected with the upper top plate through a spherical hinge, so that the phenomenon of blocking during radial vibration is prevented.
4. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: and a pilot spring guide rod is arranged between the upper end of the pilot spring and the mass block, and the lower end of the pilot spring is fixedly connected with the lower bottom plate through a screw.
5. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: 4 adjusting springs are arranged around the mass block.
6. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 5, wherein: the adjusting springs are symmetrically arranged along the center point of the mass block.
7. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: the sum of the stiffness of the main springs is 60% of the total stiffness and the sum of the stiffness of the pilot springs is 40% of the total stiffness.
8. The substation reactor unit pilot-operated vibration damping noise reduction frequency modulation mass damper of claim 1, wherein: the weight of the mass block is 2% -3% of the weight of the reactor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322074032.3U CN220452603U (en) | 2023-08-03 | 2023-08-03 | Pilot-operated vibration damping noise-reducing frequency modulation mass damper for transformer substation reactor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322074032.3U CN220452603U (en) | 2023-08-03 | 2023-08-03 | Pilot-operated vibration damping noise-reducing frequency modulation mass damper for transformer substation reactor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452603U true CN220452603U (en) | 2024-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322074032.3U Active CN220452603U (en) | 2023-08-03 | 2023-08-03 | Pilot-operated vibration damping noise-reducing frequency modulation mass damper for transformer substation reactor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452603U (en) |
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2023
- 2023-08-03 CN CN202322074032.3U patent/CN220452603U/en active Active
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Effective date of registration: 20240313 Address after: Room 690, Building B, No. 606 Ningliu Road, Changlu Street, Jiangbei New District, Nanjing City, Jiangsu Province, 210044 Patentee after: Youjia (Nanjing) Software Technology Co.,Ltd. Country or region after: China Address before: No. 16, Longfei Road, Yuhuatai District, Nanjing, Jiangsu 210012 Patentee before: Nanjing Electric Power Design and Research Institute Co.,Ltd. Country or region before: China |