CN203118724U - Low-noise dry type transformer - Google Patents
Low-noise dry type transformer Download PDFInfo
- Publication number
- CN203118724U CN203118724U CN 201220711957 CN201220711957U CN203118724U CN 203118724 U CN203118724 U CN 203118724U CN 201220711957 CN201220711957 CN 201220711957 CN 201220711957 U CN201220711957 U CN 201220711957U CN 203118724 U CN203118724 U CN 203118724U
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- China
- Prior art keywords
- low
- coil
- noise
- iron core
- dry type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000004888 barrier function Effects 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model provides a low-noise dry type transformer. Key points of the technical scheme are that the low-noise dry type transformer comprises an iron core, a coil and a coil pressing device, wherein the iron core of the transformer is a high-permeability material framework which is arranged transversely and is in a shape like a Chinese character 'ri'; the ratio of the window height of the iron core to the diameter of an iron core column is 3.8-4.5; and the flux density of the iron core is 1.50-1.60 tesla. According to the low-noise dry type transformer, the generating root of noise is restrained by determining the proportion of spatial geometric dimension of the transformer iron core and selecting a proper flux density range. Meanwhile, the coil pressing device is designed for lowering noise generated by vibration of the coil; sound insulating layers are formed between high and low-voltage coils as well as between the low-voltage coil and the iron core, so that the aim of reducing noise is further fulfilled, and the noise pollution of the application environment of the transformer is improved; and meanwhile, the low-noise dry type transformer is particularly suitable for being applied to places with special requirements on noise or installing conditions.
Description
Technical field
The utility model relates to electrical equipment technical field, more particularly, relates to a kind of low-noise dry type transformer.
Background technology
Along with the rapid growth of national economy, domestic power industry obtained flourish, large-scale power transformer in the residential area and the use of public place also more and more widely.Along with the day by day raising of people to environmental requirement, the noise jamming problem of public place also more and more comes into one's own, and for example country formulates the urban environment noise requirement, and peaceful state-noise level control is below 45dB.And existing dry-type transformer is under normal operation, produces noise generally all more than 65dB, do not reach the requirement of city control noise.
The noise that existing dry-type transformer sends is mainly produced by the flexible core vibration that causes of the magnetic hysteresis of iron core, core vibration that leakage field causes, basket vibration etc.Along with the urban industry progress, how to reduce the dry-type transformer noise and become one of transformer manufacturing industry urgent problem.
Summary of the invention
The purpose of this utility model is to overcome shortcoming of the prior art with not enough, provides a kind of dry-type transformer that can effectively reduce noise, to reach environmental protection requirement.
In order to achieve the above object, the utility model is achieved by following technical proposals: a kind of low-noise dry type transformer, comprise iron core, coil and coil compressing device, it is characterized in that: the iron core of described transformer is horizontally set " day " font high permeability material framework; The window height of described iron core is 3.8～4.5 with the ratio of the diameter of cylinder unshakable in one's determination; Described magnetic unshakable in one's determination is close to be 1.50～1.60 teslas.
Described coil compressing device is arranged on the top of high-tension coil and low-voltage coil.This coil compressing device can shake by control coil, thereby reduces the noise of its generation.
Described coil compressing device comprises core clamping, clamping screw, spring compression spare and hardware pad; Described core clamping is fixed on the iron yoke unshakable in one's determination; Described spring compression spare constitutes by spring with two compressing tablets that both ends of the spring offsets; Described clamping screw passes bolt hole on the core clamping and is pressed in spring compression spare and is positioned on the compressing tablet of top; Compressing tablet below described spring compression spare is positioned at is close to the upper surface of hardware pad, and the lower surface of described hardware pad is close to high-tension coil and low-voltage coil.
Be provided with the silica gel beam between the lower surface of described hardware pad and high-tension coil and the low-voltage coil.
Be provided with a layer insulating between described iron core and the low-voltage coil; Described insulating barrier adopts sound-absorbing material to make.
Be provided with insulating cylinder between described low-voltage coil and the high-tension coil; Described insulating cylinder adopts the epoxy resin organic material to make.
Be provided with insulating barrier between described core clamping and the iron core; Also be provided with on the described insulating barrier at least one with the insulation slip of parallel, the wide 12～20mm of being of iron yoke.At insulating barrier slip is set and plays good sound-absorbing effect.
Design principle of the present utility model is: the iron core of transformer is combined to form the high permeability material framework of " day " font of horizontally set by iron yoke and core limb, physical dimension by the design transformer core, it is close to choose appropriate magnetic unshakable in one's determination, resonance frequency when calculating unshakable in one's determination work, avoid power work frequency resonance point, thereby it is flexible to reduce magnetic hysteresis, and containment produces the noise source, reaches the purpose that reduces noise.
And the calculation of natural vibration frequency formula of single iron core is:
In the formula, kc is coefficient, W=h+2d, and wherein, h is the window height of single iron core, d is the diameter of single core limb.
In real work, the general available following formula of transformer noise quantity of power calculates:
Wherein, G is weight unshakable in one's determination; K1, k2 are coefficients; Bm is that magnetic unshakable in one's determination is close; β is penalty coefficient.
Transformer core physical dimension determination of ratio and magnetic are close chooses the size that all directly affects the transformer noise amount.The utility model is to provide physical dimension ratio unshakable in one's determination and the close range of choice of magnetic, to reduce the noise that produces when transformer is worked.
Compared with prior art, the utlity model has following advantage and beneficial effect:
1, the utility model is by determining the ratio of transformer core space geometry size, with choose the close scope of appropriate magnetic, produce resonance condition thereby avoid electromagnetism, it is flexible to reduce magnetic hysteresis unshakable in one's determination, fundamentally containment produces the noise source, the noise that produces when effectively reducing transformer work.
2, the utility model has also designed coil compressing device and has come control coil vibrations, thereby reduces the noise of its generation; And between low-voltage coil and the iron core, install the sound insulation insulating barrier between the high-voltage coil and low-voltage coil additional, further reach the reducing noise purpose.Can effectively reduce the transformer noise level by above Several Measures, the noise pollution of transformer environment for use is improved, also be specially adapted to simultaneously noise or mounting condition are had the field of employment of specific (special) requirements.
Description of drawings
Fig. 1 is the geometrical plane figure of the utility model transformer core;
Fig. 2 is the sectional view of A-A direction among Fig. 1;
Fig. 3 is the close curve synoptic diagram with noise level of the magnetic unshakable in one's determination of transformer;
Fig. 4 is the coil compressing device structure chart of the utility model transformer;
Fig. 5 is the scheme of installation of the utility model sound insulation insulating material;
Wherein, 1 is that transformer core, 2 is the insulating barrier between core clamping and the iron core for core clamping, 11 for the insulating cylinder between the high-voltage coil and low-voltage coil, 10 for the insulating barrier between iron core and the low-voltage coil, 9 for high-tension coil, 8 for low-voltage coil, 7 for silica gel beam, 6 for hardware pad, 5 for spring compression spare, 4 for the clamping screw of coil compacting device, 3.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Below be that the dry-type transformer of SCB10-630/10 is that example describes with the model.
The utility model such as Fig. 1, Fig. 2, Fig. 4 and shown in Figure 5, wherein Fig. 2 is the sectional view of A-A direction among Fig. 1, chooses in the scope that the close value of magnetic unshakable in one's determination of this transformer is confined in Fig. 3 square frame.This low-noise dry type transformer comprises unshakable in one's determination 1 and low-voltage coil 6, high-tension coil 7, and the iron core 1 of transformer is the rectangle framework of a horizontally set " day " font; Unshakable in one's determination 1 the high h of window and the ratio of core limb diameter d are 3.9; 1 magnetic unshakable in one's determination is close is chosen for 1.55 teslas.
This transformer also comprises be used to the coil compressing device that compresses high-tension coil 7 and low-voltage coil 6; Coil compressing device comprises core clamping 10, clamping screw 2, spring compression spare 3 and hardware pad 4; Described core clamping 10 rely on the stem arm-ties with about draw screw rod to be fixed on unshakable in one's determination 1 the upper and lower iron yoke; Described spring compression spare 3 constitutes by spring with two compressing tablets that both ends of the spring offsets; Described clamping screw 2 passes bolt hole on the core clamping 10 and is pressed in spring compression spare 3 and is positioned on the compressing tablet of top; Compressing tablet below described spring compression spare 3 is positioned at is close to the upper surface of hardware pad 4, and the lower surface of described hardware pad 4 is close to high-tension coil 7 and low-voltage coil 6 by silica gel beam 5.
Described unshakable in one's determination 1 and low-voltage coil between be provided with a layer insulating 8; Described insulating barrier 8 adopts sound-absorbing material to make.
Be provided with insulating cylinder 9 between described low-voltage coil 6 and the high-tension coil 7; Described insulating cylinder 9 adopts the epoxy resin organic material to make.
Be provided with insulating barrier 11 between the described core clamping 10 and unshakable in one's determination 1; Arrange one on the described insulating barrier and parallelly, wide with the iron yoke be the insulation slip of 14mm.At insulating barrier slip is set and plays good sound-absorbing effect.
Model is that the dry-type transformer of SCB10-630/10 passes through above execution mode, select appropriate core dimensions and magnetic close, avoid the electromagentic resonance point at project organization, and increase high-voltage coil and low-voltage coil against shock device, and the measure of installing sound-absorbing material in space, sound source top layer additional reaches the requirement that reduces this transformer noise.The noise level that this transformer is produced is 47.8dB, and its noise level is within 1 class 55dB prescribed limit of city noise level.
Above-described embodiment is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (7)
1. a low-noise dry type transformer comprises iron core, coil and coil compressing device, it is characterized in that: the iron core of described transformer is horizontally set " day " font high permeability material framework; The window height of described iron core is 3.8～4.5 with the ratio of the diameter of cylinder unshakable in one's determination; Described magnetic unshakable in one's determination is close to be 1.50～1.60 teslas.
2. low-noise dry type transformer according to claim 1 is characterized in that: also comprise be used to the coil compressing device that compresses high-tension coil and low-voltage coil; Described coil compressing device is arranged on the top of high-tension coil and low-voltage coil.
3. low-noise dry type transformer according to claim 2, it is characterized in that: described coil compressing device comprises core clamping, clamping screw, spring compression spare and hardware pad; Described core clamping is fixed on the iron yoke unshakable in one's determination; Described spring compression spare constitutes by spring with two compressing tablets that both ends of the spring offsets; Described clamping screw passes bolt hole on the core clamping and is pressed in spring compression spare and is positioned on the compressing tablet of top; Compressing tablet below described spring compression spare is positioned at is close to the upper surface of hardware pad, and the lower surface of described hardware pad is close to high-tension coil and low-voltage coil.
4. low-noise dry type transformer according to claim 3 is characterized in that: be provided with the silica gel beam between the lower surface of described hardware pad and high-tension coil and the low-voltage coil.
5. according to each described low-noise dry type transformer in the claim 1 to 4, it is characterized in that: be provided with a layer insulating between described iron core and the low-voltage coil; Described insulating barrier adopts sound-absorbing material to make.
6. according to each described low-noise dry type transformer in the claim 1 to 4, it is characterized in that: be provided with insulating cylinder between described low-voltage coil and the high-tension coil; Described insulating cylinder adopts the epoxy resin organic material to make.
7. according to claim 3 or 4 described low-noise dry type transformers, it is characterized in that: be provided with insulating barrier between described core clamping and the iron core; Also be provided with on the described insulating barrier at least one with the insulation slip of parallel, the wide 12～20mm of being of iron yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711957 CN203118724U (en) | 2012-12-21 | 2012-12-21 | Low-noise dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220711957 CN203118724U (en) | 2012-12-21 | 2012-12-21 | Low-noise dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203118724U true CN203118724U (en) | 2013-08-07 |
Family
ID=48899047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220711957 Expired - Lifetime CN203118724U (en) | 2012-12-21 | 2012-12-21 | Low-noise dry type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203118724U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996506A (en) * | 2014-05-30 | 2014-08-20 | 江苏容天机电科技有限公司 | Low-noise transformer |
| CN113436851A (en) * | 2021-06-01 | 2021-09-24 | 广州市一变电气设备有限公司 | Low-noise dry-type transformer |
-
2012
- 2012-12-21 CN CN 201220711957 patent/CN203118724U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996506A (en) * | 2014-05-30 | 2014-08-20 | 江苏容天机电科技有限公司 | Low-noise transformer |
| CN113436851A (en) * | 2021-06-01 | 2021-09-24 | 广州市一变电气设备有限公司 | Low-noise dry-type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
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| CX01 | Expiry of patent term |