CN202258737U - Anti-vibration device of transformer movement - Google Patents
Anti-vibration device of transformer movement Download PDFInfo
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- CN202258737U CN202258737U CN201120380806XU CN201120380806U CN202258737U CN 202258737 U CN202258737 U CN 202258737U CN 201120380806X U CN201120380806X U CN 201120380806XU CN 201120380806 U CN201120380806 U CN 201120380806U CN 202258737 U CN202258737 U CN 202258737U
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- semiclosed circular
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Abstract
The utility model relates to an anti-vibration device of a transformer movement. The anti-vibration device comprises a rubber elastic body and anti-vibration springs, wherein a plurality of semi-sealed round holes are arranged on the rubber elastic body; the openings of the semi-sealed round holes face to the side of a transformer; and the anti-vibration springs are arranged in the semi-sealed round holes, therefore, the three parts are isolated and prevented from vibration. In-hole spring damping can be used for effectively preventing from low-frequency vibration; in-hole air compression generates elastic damping; and rubber damping can be used for effectively preventing from high-frequency damping vibration, therefore, the anti-vibration device can be used for avoiding a single anti-vibration mode and effectively solving structural vibration transmission.
Description
Technical field
The utility model relates to a kind of shock absorbing apparatus, particularly a kind of transformer movement shock preventing device.
Background technology
So-called transformer room noise is that what the 50Hz alternating current was caused is the transformer low-frequency noise of fundamental frequency with 100Hz.The penetration power of this low-frequency noise is very strong, and generally speaking, the transformer room room noise is merely 48 ~ 67dB (A), and upstairs premises noise rank is generally 36 ~ 48 dB (A).Resident family can obviously experience buzz, and this low-frequency noise can cause very big influence to people's health for a long time in the past.Want to solve this low-frequency noise and be not easy, it needs the improvement engineering of a system.Transformer noise has three sound sources, and the one, unshakable in one's determination, the 2nd, winding, the 3rd, cooling blower, the noise sum that promptly unloaded, load and cooling system cause.The reason that produces noise unshakable in one's determination is to constitute silicon steel sheet unshakable in one's determination under the effect of alternating magnetic field, and it is magnetostriction that small variation can take place, and magnetostriction makes iron core do periodic vibration with the variation of excitation frequency.The vibrative reason of winding is that electric current produces electromagnetic force in winding, and stray field also can make structural member produce vibration.Square being directly proportional of electromagnetic force (and vibration amplitude) and electric current, and square being directly proportional of the acoustical power of emission and vibration amplitude.Therefore, the acoustical power of emission and load current, load characteristic, three-phase equilibrium, input voltages etc. all have relation clearly.
Transformer has in the indoor route of transmission of noise pollution that causes of dwelling house:
(1) mechanical oscillation of transformer unit are along the machine room overland propagation, further along the house wall structure-borne to resident's indoor wall, the metope vibration excites air agitation once more, produces air-borne sound and imports people's ear into.
(2) transformer noise through casing vibration radiation air borne to the machine room metope; In the metope partial reflection, part is propagated along body of wall, is transmitted to each floor resident indoor wall along fabric structure always; The metope vibration excites air agitation once more, produces air-borne sound and imports people's ear into.
(3) the machine room air-borne sound is through hole diffraction such as machine rooms, and diffraction sound is transmitted to resident's indoor (if the adjacent needs with the residential building door and window of machine room are considered separately) through holes such as dwelling house door and windows.
The final dwelling house room noise that forms of this three partial noise and indoor background noise stack back pollutes.From the energy point of view analysis, through our estimation, more than the ratio of 3 part acoustic energy be 206:1.075:0.0025, be about 82000:400:1.Therefore, the dwelling house room noise that causes for the control transformer unit pollutes, and mainly should control the structure-borne sound transmission that unit vibration causes, the structure-borne sound transmission that the air-borne sound of machine unit shell radiation is drawn sound can be with due regard to, machine room diffraction sound shadow is rung can ignore fully.
Summary of the invention
The utility model technical problem to be solved is, a kind of transformer movement shock preventing device that reduces the structure-borne sound transmission that unit vibration causes is provided.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of transformer movement shock preventing device; It is characterized in that comprising rubber elastomer, said rubber elastomer is provided with a plurality of semiclosed circular holes, and said semiclosed circular hole opening is towards transformer side.
As a kind of improvement, comprise also and keep away the spring that shakes that the said spring that shakes of keeping away is arranged in the semiclosed circular hole.
As a kind of improvement, to keep away spring one end that shakes and be arranged on semiclosed circular hole bottom, the other end extends semiclosed circular hole.
As a kind of improvement, the said spring that shakes of keeping away is provided with cover plate away from an end of semiclosed circular hole bottom.
As a kind of improvement, said semiclosed circular hole is six to 12 and is evenly distributed on the rubber elastomer, and the said semiclosed circular hole degree of depth is the half the between 9/10ths of caoutchouc elasticity body thickness.
As a kind of improvement, said rubber elastomer is a cuboid, and length is between one meter two to one meter four, and width is between 0. 9 meters to one meter.
A kind of transformer movement of the utility model shock preventing device is arranged on below the dry-type transformer iron core support, and the dry-type transformer operation causes when vibrating through this device, is shared simultaneously by three parts and working, and isolates, keeps away and shake.1: hole inner spring damping can effectively stop the low frequency damping vibration; 2: air compression produces elastic damping in the hole; 3: rubber damping can effectively stop the high frequency damping vibration.Avoid keeping away and shake, cause unit resonance easily, can solve structural vibration effectively and propagate by single mode.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Description of drawings
Fig. 1 is the structural representation of a kind of transformer movement of the utility model shock preventing device;
Fig. 2 is the longitdinal cross-section diagram of the utility model Fig. 1.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of embodiment of transformer movement shock preventing device comprises rubber elastomer 1, and rubber elastomer 1 is a cuboid; Length is between one meter two to one meter four; Width is between 0. 9 meters to one meter, and rubber elastomer 1 is provided with a plurality of semiclosed circular holes 2, and semiclosed circular hole 2 openings are towards transformer side; Semiclosed circular hole 2 is six to 12 and is evenly distributed on the rubber elastomer 1, and semiclosed circular hole 2 degree of depth are the half the between 9/10ths of rubber elastomer 1 thickness.Comprise also and keep away the spring 3 that shakes, keep away the spring 3 that shakes and be arranged in the semiclosed circular hole 2 that keep away spring 3 one ends that shake and be arranged on semiclosed circular hole 2 bottoms, the other end extends semiclosed circular hole 2, the said spring 3 that shakes of keeping away is provided with cover plate 4 away from an end of semiclosed circular hole 2 bottoms.
Through the utility model transformer is fixed on the ground, reduces because of the vibration of transformer body causes to the air radiation noise, this measure can descend the noise transfer additional amount about 2 ~ 4dB (A), and cost is low, installs more convenient, effective.
Claims (7)
1. a transformer movement shock preventing device is characterized in that comprising rubber elastomer (1), and said rubber elastomer (1) is provided with a plurality of semiclosed circular holes (2), and said semiclosed circular hole (2) opening is towards transformer side.
2. transformer movement shock preventing device according to claim 1 is characterized in that also comprising and keeps away the spring that shakes (3) that the said spring that shakes (3) of keeping away is arranged in the semiclosed circular hole (2).
3. transformer movement shock preventing device according to claim 2, said spring (3) one ends that shake of keeping away are arranged on semiclosed circular hole (2) bottom, and the other end extends semiclosed circular hole (2).
4. transformer movement shock preventing device according to claim 3 is characterized in that the said spring that shakes (3) of keeping away is provided with cover plate (4) away from an end of semiclosed circular hole (2) bottom.
5. according to claim 1 or 2 or 3 or 4 described transformer movement shock preventing devices; It is characterized in that said semiclosed circular hole (2) is six to 12 and is evenly distributed on the rubber elastomer (1), said semiclosed circular hole (2) degree of depth is the half the between 9/10ths of rubber elastomer (1) thickness.
6. according to claim 1 or 2 or 3 or 4 described transformer movement shock preventing devices, it is characterized in that said rubber elastomer (1) is a cuboid, length is between one meter two to one meter four, and width is between 0. 9 meters to one meter.
7. transformer movement shock preventing device according to claim 5 is characterized in that said rubber elastomer (1) is a cuboid, and length is between one meter two to one meter four, and width is between 0. 9 meters to one meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120380806XU CN202258737U (en) | 2011-10-10 | 2011-10-10 | Anti-vibration device of transformer movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120380806XU CN202258737U (en) | 2011-10-10 | 2011-10-10 | Anti-vibration device of transformer movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258737U true CN202258737U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120380806XU Expired - Fee Related CN202258737U (en) | 2011-10-10 | 2011-10-10 | Anti-vibration device of transformer movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202258737U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9549503B2 (en) | 2012-07-02 | 2017-01-24 | Cnh Industrial America Llc | Mount for a cabin of an agricultural harvester |
| CN110285183A (en) * | 2019-06-03 | 2019-09-27 | 西北工业大学 | A kind of distribution low frequency absorbing periodic structure |
-
2011
- 2011-10-10 CN CN201120380806XU patent/CN202258737U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9549503B2 (en) | 2012-07-02 | 2017-01-24 | Cnh Industrial America Llc | Mount for a cabin of an agricultural harvester |
| CN110285183A (en) * | 2019-06-03 | 2019-09-27 | 西北工业大学 | A kind of distribution low frequency absorbing periodic structure |
| CN110285183B (en) * | 2019-06-03 | 2021-05-07 | 西北工业大学 | Distributed low-frequency vibration absorption periodic structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20141010 |
|
| EXPY | Termination of patent right or utility model |