CN104599815A - Noise-reducing installation structure for dry-type transformer - Google Patents
Noise-reducing installation structure for dry-type transformer Download PDFInfo
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- CN104599815A CN104599815A CN201510034465.3A CN201510034465A CN104599815A CN 104599815 A CN104599815 A CN 104599815A CN 201510034465 A CN201510034465 A CN 201510034465A CN 104599815 A CN104599815 A CN 104599815A
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- dry
- type transformer
- vibration damping
- damping beam
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Abstract
The invention discloses a noise-reducing installation structure for a dry-type transformer. The noise-reducing installation structure mainly comprises a dry-type transformer which is installed on the ground and is connected with a low-voltage cabinet through a busbar, wherein the lower part of the dry-type transformer is connected with a concrete foundation which is arranged on the ground by installing at least four dampers, so as to be fixedly installed on the ground; the connection of a winding of the dry-type transformer and the busbar of the low-voltage cabinet is soft connection; six dampers are arranged on the lower part of the dry-type transformer and are evenly distributed on the foundation on the ground; various support points of the dampers after being installed are positioned at the same horizontal plane height; the dry-type transformer is arranged on a damping beam composed of steel channels through a support frame; the dampers are fixedly arranged below the damping beam. The noise-reducing installation structure has the characteristics of being simple in structure and convenient to use and install; relatively good damping and noise reduction effects can be obtained; the living environment of people is improved.
Description
Technical field
What the present invention relates to is a kind of noise reduction mounting structure of dry-type transformer, belongs to the mounting technique field of transformer.
Background technology
Electric power dry transformer is the novel transformer of a kind of safety, energy-saving and environmental protection, is mainly used in rise residential, office building, hospital, contour shunting yard institute of hotel.Along with the continuous propelling of Chinese Urbanization, dry-type transformer is also widely used thereupon, the continuous increase of dry-type transformer number of applications and the operation time limit, constantly has the dry-type transformer vibrating noise situation that disturbs residents to produce successively.Along with the raising that people require living environment, the existence of transformer noise has a strong impact on the harmony of society.
The electromagnetic noise of dry-type transformer belongs to mechanical noise after deliberation, it is that alternating magnetic field produces iron core and the coil generation vibration that periodically alternation active force causes, the outside radiated noise of iron core (silicon steel sheet) coil of vibration, its dominant frequency depends on ac frequency, but due in energising dry-type transformer, under the eddy current effect of wire, core interior, the noise that its noise radiated produces more than single-frequency vibrations is much complicated.
The route of transmission of usual noise is divided into two classes: one is the Spreading and diffusion of noise by air, and constantly decay in dry-type transformer Spreading and diffusion process, energy density constantly reduces.Two is noise Spreading and diffusion by solid, Spreading and diffusion in beam column and floor construction, and energy density also decreases, but reduces little.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art existence, and provide a kind of structure simple, easy to install and use, better effect of vibration and noise reduction can be obtained, improve the noise reduction mounting structure of the dry-type transformer of people's living environment.
The object of the invention is to have come by following technical solution, the noise reduction mounting structure of described a kind of dry-type transformer, it mainly comprise an installation on the ground, the dry-type transformer to be connected by busbar with low-voltage cabinet, the bottom of described dry-type transformer is connected with the concrete foundation that ground is arranged by least installing four vibration isolators thus fixedly mounts on the ground; The winding of described dry-type transformer is connected for being flexible coupling with the busbar of low-voltage cabinet.
The bottom of described dry-type transformer is provided with six vibration isolators and is distributed on the ground on ground, and described vibration isolator each strong point is after mounting positioned at same level height; Described dry-type transformer is arranged on the vibration damping beam by channel-section steel formation by bracing frame; Described vibration isolator is installed with under described vibration damping beam.
Described vibration damping beam comprises upper strata vibration damping beam and lower floor's vibration damping beam, and the channel-section steel forming upper strata vibration damping beam is connected with the mutual vertical interlaced of channel-section steel forming lower floor's vibration damping beam; Described dry-type transformer is arranged on the vibration damping beam of upper strata by bracing frame, and described vibration isolator is fixedly mounted on lower floor's vibration damping beam.
The top of described vibration isolator is withstood on by the first rubber blanket on the channel-section steel lower surface of lower floor's vibration damping beam, and the bottom of described vibration isolator, by the second rubber blanket and the 3rd rubber blanket, is gripped with a base steel plates therebetween; The channel-section steel of described upper strata vibration damping beam laterally offers lightening hole.
The invention belongs to the improvement to prior art, it is simple that it has structure, easy to install and use, can obtain better effect of vibration and noise reduction, improve the features such as people's living environment.
Accompanying drawing explanation
Fig. 1 is noise reduction mounting structure schematic diagram of the present invention.
Fig. 2 is dry-type transformer mounting structure schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail: shown in Fig. 1,2, the noise reduction mounting structure of a kind of dry-type transformer of the present invention, it mainly comprise an installation on the ground, the dry-type transformer 9 to be connected by busbar with low-voltage cabinet, the bottom of described dry-type transformer 9 is connected with the concrete foundation that ground is arranged by least installing four vibration isolators 3 thus fixedly mounts on the ground; The described winding of dry-type transformer 9 is connected for being flexible coupling with the busbar of low-voltage cabinet.
Shown in figure, the bottom of described dry-type transformer 9 is provided with six vibration isolators 3 and is distributed on the ground on ground, and described vibration isolator 3 each strong point is after mounting positioned at same level height; Described dry-type transformer 9 is arranged on the vibration damping beam by channel-section steel formation by bracing frame; Described vibration isolator 3 is installed with under described vibration damping beam.
The further embodiment of the present invention is: described vibration damping beam comprises upper strata vibration damping beam 1 and lower floor's vibration damping beam 2, and the channel-section steel forming upper strata vibration damping beam 1 is connected with the mutual vertical interlaced of channel-section steel forming lower floor's vibration damping beam 2; Described dry-type transformer 9 is arranged on upper strata vibration damping beam 1 by bracing frame, and described vibration isolator 3 is fixedly mounted on lower floor's vibration damping beam 2.
Shown in Fig. 2, the top of described vibration isolator 3 is withstood on by the first rubber blanket 4 on the channel-section steel lower surface of lower floor's vibration damping beam 2, and the bottom of described vibration isolator 3, by the second rubber blanket 5 and the 3rd rubber blanket 6, is gripped with a base steel plates 7 therebetween; The channel-section steel of described upper strata vibration damping beam 1 laterally offers lightening hole 8.
Embodiment:
The present invention mainly installs vibration isolator additional in dry-type transformer bottom, the model that described dry-type transformer is chosen as the production of special power transformation work transformer Co., Ltd is SCBH15-1250/10, weight 4070KG, considers transformer busbar weight, and overall weight is about 4200KG.The excited frequency of this dry-type transformer is about 100 hertz.Select the vibration isolator of LA-1250 model accordingly, the optimal load of LA-1250 vibration isolator is 700KG load scope is (500-1100) KG, and under best load, natural frequency is 3.7 hertz; In vibration absorber, vibration isolator selects 6 altogether.
The vibration isolation mode on dry-type transformer and ground adopts and is placed on vibration absorber by dry-type transformer entirety, makes it thoroughly isolated with ground.
Dry-type transformer almost symmetry all around itself, but the busbar that transformer is connected with low-voltage cabinet causes before and after transformer asymmetric, symmetrical.Transformer has channel-section steel and is connected with basis, and channel-section steel direction is vertical with coils arrangement direction.With jack by padded for transformer belt protecting sheathing entirety.
in addition during vibration isolator in-site installation because of note some:
(1) load-bearing of each vibration isolator is impartial, because before and after transformer, distribution of weight is uneven, therefore will find transformer position of centre of gravity accurately, ensure that each unit shock absorbers compression amount is substantially identical.
(2) ensure integrally-built stability, adopt channel-section steel that each vibration isolator is connected into junior unit, can stability be increased.
(3) basis of mounting dampers must be smooth, require vibration isolator after mounting each strong point be positioned at same level height.
(4) on-the-spot distribution indoor construction cannot use lifting machine, and use jack only, transformer lifts limited height, and former channel-section steel need not be removed, and interruption duration is unsuitable long.
Claims (4)
1. the noise reduction mounting structure of a dry-type transformer, it mainly comprise an installation on the ground, the dry-type transformer to be connected by busbar with low-voltage cabinet, it is characterized in that the bottom of described dry-type transformer is connected with the concrete foundation that ground is arranged by least installing four vibration isolators thus fixedly mounts on the ground; The winding of described dry-type transformer is connected for being flexible coupling with the busbar of low-voltage cabinet.
2. the noise reduction mounting structure of dry-type transformer according to claim 1, it is characterized in that the bottom of described dry-type transformer is provided with six vibration isolators and is distributed on the ground on ground, and described vibration isolator each strong point is after mounting positioned at same level height; Described dry-type transformer is arranged on the vibration damping beam by channel-section steel formation by bracing frame; Described vibration isolator is installed with under described vibration damping beam.
3. the noise reduction mounting structure of dry-type transformer according to claim 2, is characterized in that described vibration damping beam comprises upper strata vibration damping beam and lower floor's vibration damping beam, and the channel-section steel forming upper strata vibration damping beam is connected with the mutual vertical interlaced of channel-section steel forming lower floor's vibration damping beam; Described dry-type transformer is arranged on the vibration damping beam of upper strata by bracing frame, and described vibration isolator is fixedly mounted on lower floor's vibration damping beam.
4. the noise reduction mounting structure of dry-type transformer according to claim 3, it is characterized in that the top of described vibration isolator withstands on the channel-section steel lower surface of lower floor's vibration damping beam by the first rubber blanket, the bottom of described vibration isolator, by the second rubber blanket and the 3rd rubber blanket, is gripped with a base steel plates therebetween; The channel-section steel of described upper strata vibration damping beam laterally offers lightening hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034465.3A CN104599815A (en) | 2015-01-23 | 2015-01-23 | Noise-reducing installation structure for dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034465.3A CN104599815A (en) | 2015-01-23 | 2015-01-23 | Noise-reducing installation structure for dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104599815A true CN104599815A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510034465.3A Pending CN104599815A (en) | 2015-01-23 | 2015-01-23 | Noise-reducing installation structure for dry-type transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609271A (en) * | 2016-03-04 | 2016-05-25 | 国网上海市电力公司 | Vibration and noise reduction device of transformer |
| CN106252029A (en) * | 2016-09-27 | 2016-12-21 | 国家电网公司 | A kind of vibration and noise reducing device for dry-type distribution transformer |
| CN106449028A (en) * | 2016-09-27 | 2017-02-22 | 国家电网公司 | Vibration and noise reduction device for dry-type distribution transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000082622A (en) * | 1998-09-07 | 2000-03-21 | Fuji Electric Co Ltd | Low noise transformer |
| CN102262956A (en) * | 2011-01-19 | 2011-11-30 | 江苏宝亨新电气有限公司 | Vibration damping and noise reducing dry type transformer |
| CN203444956U (en) * | 2013-09-17 | 2014-02-19 | 绍兴利安电力设备有限公司 | Vibration and noise reduction complete equipment special for electric dry-type transformer |
| CN204680507U (en) * | 2015-01-23 | 2015-09-30 | 国网浙江省电力公司嘉兴供电公司 | The noise reduction mounting structure of dry-type transformer |
-
2015
- 2015-01-23 CN CN201510034465.3A patent/CN104599815A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000082622A (en) * | 1998-09-07 | 2000-03-21 | Fuji Electric Co Ltd | Low noise transformer |
| CN102262956A (en) * | 2011-01-19 | 2011-11-30 | 江苏宝亨新电气有限公司 | Vibration damping and noise reducing dry type transformer |
| CN203444956U (en) * | 2013-09-17 | 2014-02-19 | 绍兴利安电力设备有限公司 | Vibration and noise reduction complete equipment special for electric dry-type transformer |
| CN204680507U (en) * | 2015-01-23 | 2015-09-30 | 国网浙江省电力公司嘉兴供电公司 | The noise reduction mounting structure of dry-type transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609271A (en) * | 2016-03-04 | 2016-05-25 | 国网上海市电力公司 | Vibration and noise reduction device of transformer |
| CN106252029A (en) * | 2016-09-27 | 2016-12-21 | 国家电网公司 | A kind of vibration and noise reducing device for dry-type distribution transformer |
| CN106449028A (en) * | 2016-09-27 | 2017-02-22 | 国家电网公司 | Vibration and noise reduction device for dry-type distribution transformer |
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Application publication date: 20150506 |
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| RJ01 | Rejection of invention patent application after publication |