CN202159564U - Controllable noise reduction device for reactors - Google Patents
Controllable noise reduction device for reactors Download PDFInfo
- Publication number
- CN202159564U CN202159564U CN2011202086013U CN201120208601U CN202159564U CN 202159564 U CN202159564 U CN 202159564U CN 2011202086013 U CN2011202086013 U CN 2011202086013U CN 201120208601 U CN201120208601 U CN 201120208601U CN 202159564 U CN202159564 U CN 202159564U
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- iron core
- noise reduction
- reduction device
- vibration
- clamping piece
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Abstract
The utility model discloses a controllable noise reduction device for reactors, which is characterized in that a secondary iron core is arranged outside a primary iron core in orthogonal mode, an insulation cushion is arranged between a lower clamping piece fixing the primary iron core and the primary iron core, and an insulation paper board or a wool felt is arranged between the secondary iron core and the lower clamping piece. The controllable noise reduction device for the reactors uses the secondary iron core to absorb flux leakage so as to reduce vibration of windings caused by electromagnetic force generated by leakage flux among winding conductors, and simultaneously vibration of walls of an oil tank caused by flux leakage and magnetic shielding is reduced. By arranging the insulation paper board or the wool felt, vibration of the secondary iron core can be effectively reduced. The controllable noise reduction device is low in cost and noise and small in flux leakage.
Description
Technical field
The utility model relates to a kind of noise reducing apparatus, especially a kind of noise reducing apparatus that on controlled reactor, uses.
Background technology
The principle of controlled reactor is the magnetic saturation principle.The magnetic saturation controlled reactor changes magnetic saturation (being the working point) unshakable in one's determination through the excitatory of DC control electric current, thereby reaches the purpose of the idle output of smooth adjustment.Bigger because of electromagnetic change, relatively more frequent, leakage field is also big, causes the iron core vibrations easily, and noise is also big, and this also is the very big reason that the puzzlement controlled reactor is promoted.
Solve the big problem of noise, must solve from the source.The main source of noise has:
1. the stagnant flexible iron core vibrations that cause of the mangneto of silicon steel sheet;
2. pass the iron coring vibration that the electromagnetic force that produces between sheet causes because of magnetic flux between silicon steel sheet seam crossing and lamination;
3. when load current is through winding, because of leakage flux produces the vibration that electromagnetic force causes winding between winding conductor;
4. leakage flux causes the oil tank wall vibration of (comprising magnetic screen).
5. the natural frequency of the iron core of reactor, winding, fuel tank and other structural member mechanical oscillation only or equal fundamental frequency and the frequency of two, three, four high frequencies of the magnetostriction vibration of silicon steel sheet produces resonance.
Usually; Because of magnetic flux passes the iron coring vibration that the electromagnetic force that produces between sheet causes, compare much for a short time with the iron coring vibration that the silicon steel sheet magnetostriction causes between silicon steel sheet seam crossing and lamination, can ignore; Therefore, unshakable in one's determination vibration can be thought the magnetostriction of depending on silicon steel sheet fully.Though noise can not be eliminated, can reduce through the whole bag of tricks.
Summary of the invention
To the deficiency that prior art exists, the utility model technical problem to be solved is a kind of controlled reactor noise reducing apparatus to be provided, the big problem of solution controlled reactor noise.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is: a kind of controlled reactor noise reducing apparatus; It is secondary unshakable in one's determination for quadrature outside main core is provided with; Between the lower clamping piece of fixing main core and main core, the insulation cushion pin is set, insulating board or wool felt are set between secondary iron core and lower clamping piece.
Above-mentioned controlled reactor noise reducing apparatus, it also is provided with the insulation rubber cushion in the fuel tank and the lower oil tank junction of pad underfooting.
The controlled reactor noise reducing apparatus of the utility model absorbs leakage field with secondary iron core, reduces leakage flux and between winding conductor, produces the vibration that electromagnetic force causes winding, has reduced the oil tank wall vibration that leakage field and magnetic screen cause simultaneously.Through installing insulating board or wool felt additional, can effectively reduce secondary vibration unshakable in one's determination.Install the insulation rubber cushion additional through the fuel tank junction, can avoid fuel tank and unshakable in one's determination and winding to produce resonance, thereby reduce noise.This installation cost is cheap, and noise is low, and leakage field is few.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the utility model is explained further details.
Fig. 1 is the utility model embodiment assembled construction sketch map unshakable in one's determination;
The structural representation that Fig. 2 partly amplifies for I shown in Figure 1.
Embodiment
As shown in Figure 1, a kind of controlled reactor noise reducing apparatus, it is secondary iron core 2 for quadrature outside main core 1 is provided with.As shown in Figure 2, between the lower clamping piece 5 of fixing main core 1 and main core 1, insulation cushion pin 6 is set, secondary unshakable in one's determination 2 and lower clamping piece 5 between insulating board 3 or wool felt are set.Fuel tank 7 under insulation cushion pin 6 is provided with insulation rubber cushion 8 with the lower oil tank junction.The controlled reactor noise reducing apparatus of present embodiment absorbs leakage field with secondary iron core, reduces leakage flux and between winding conductor, produces the vibration that electromagnetic force causes winding, has reduced the oil tank wall vibration that leakage field and magnetic screen cause simultaneously.Through installing insulating board or wool felt additional, can effectively reduce secondary vibration unshakable in one's determination.Install the insulation rubber cushion additional through the fuel tank junction, can avoid fuel tank and unshakable in one's determination and winding to produce resonance, thereby reduce noise.This installation cost is cheap, and noise is low, and leakage field is few.
Claims (2)
1. controlled reactor noise reducing apparatus is characterized in that: quadrature is provided with secondary unshakable in one's determinationly outside main core, between the lower clamping piece of fixing main core and main core, the insulation cushion pin is set, and insulating board or wool felt are set between secondary iron core and lower clamping piece.
2. controlled reactor noise reducing apparatus according to claim 1 is characterized in that: it also is provided with the insulation rubber cushion in the fuel tank and the lower oil tank junction of pad underfooting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202086013U CN202159564U (en) | 2011-06-21 | 2011-06-21 | Controllable noise reduction device for reactors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202086013U CN202159564U (en) | 2011-06-21 | 2011-06-21 | Controllable noise reduction device for reactors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159564U true CN202159564U (en) | 2012-03-07 |
Family
ID=45767190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202086013U Expired - Fee Related CN202159564U (en) | 2011-06-21 | 2011-06-21 | Controllable noise reduction device for reactors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085403A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer three-limb core end magnet shielding structure and its method for shielding |
-
2011
- 2011-06-21 CN CN2011202086013U patent/CN202159564U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085403A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer three-limb core end magnet shielding structure and its method for shielding |
| CN110085403B (en) * | 2019-05-21 | 2024-04-26 | 保定天威保变电气股份有限公司 | Magnetic shielding structure and magnetic shielding method for end part of three-post iron core of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20120621 |