CN207165354U - Foamed aluminium sound-absorbing dry-type transformer case - Google Patents
Foamed aluminium sound-absorbing dry-type transformer case Download PDFInfo
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- CN207165354U CN207165354U CN201721108494.0U CN201721108494U CN207165354U CN 207165354 U CN207165354 U CN 207165354U CN 201721108494 U CN201721108494 U CN 201721108494U CN 207165354 U CN207165354 U CN 207165354U
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Abstract
The utility model discloses a kind of foamed aluminium sound-absorbing dry-type transformer case, including aluminium alloy outside plate, sound insulationg board is bonded with by bonding agent on the aluminium alloy outside plate madial wall, the upper end of the aluminium alloy outside plate offers opening one and opening two, the lower end of the aluminium alloy outside plate offers opening three and opening four, the opening one is located on same vertical curve with opening three, the opening two and opening four are located on same vertical curve, the opening one, opening two, sliding panel is provided with opening three and opening four, the upper and lower ends of the sliding panel are provided with baffle plate, four pieces of sliding panels combine a cavity with the upper and lower ends of aluminium alloy outside plate, foamed aluminium board is provided with the cavity, there is air layer between the foamed aluminium board and sound insulationg board.The utility model structure is novel, and when sound wave passes through foamed aluminium board, back wave will be formed in the presence of air layer and sound insulationg board, and then interferes decay, is effectively reduced noise caused by transformer.
Description
Technical field
Transformer technology field is the utility model is related to, more particularly to a kind of foamed aluminium sound-absorbing dry-type transformer case.
Background technology
Dry-type transformer because having the advantages that small volume, loss are low, safe and reliable, it is simple to safeguard, load center can be goed deep into,
So develop in recent years very rapid.Because dry-type transformer is widely used in people's work such as commercial center, office block, residential quarter
Make, the place of life, therefore, its running noises problem is increasingly paid attention to by user and manufacturer.How dry type is controlled to become
Noise when depressor is run, as a highly important problem.
Nowadays, the conventional noise reduction measure and method of design of transformer and manufacturing process mainly have：In iron core surface coating, put
Beam is put, separates the air gap between iron core and winding and shock insulation material etc. is installed between transformer and other equipment.But these
Noise reducing efforts can not be largely decrease noise, therefore also need to carry out at noise reduction in terms of other of transformer
Reason.
The content of the invention
To solve the above problems, the utility model discloses a kind of foamed aluminium sound-absorbing dry-type transformer case, sound wave passes through
During foamed aluminium board, back wave will be formed in the presence of air layer and sound insulationg board, and then interferes decay, is effectively reduced
Noise caused by transformer.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of foamed aluminium sound-absorbing dry-type transformer case, including aluminium alloy outside plate, lead on the aluminium alloy outside plate madial wall
Cross bonding agent and be bonded with sound insulationg board, the upper end of the aluminium alloy outside plate offers opening one and opening two, the aluminium alloy outside plate
Lower end offer opening three and opening four, the opening one be located on same vertical curve with opening three, the opening two with open
Mouthfuls four on same vertical curve, there is gap between the opening two and opening four and sound insulationg board, the opening one, opening two,
Be provided with sliding panel in opening three and opening four, the sliding panel perpendicular to the upper end of aluminium alloy outside plate, the sliding panel
Upper and lower ends are provided with baffle plate, and four pieces of sliding panels combine a cavity, the sky with the upper and lower ends of aluminium alloy outside plate
Intracavitary is provided with foamed aluminium board, has air layer between the foamed aluminium board and sound insulationg board.
Further, end set of the sliding panel away from aluminium alloy outside plate has draw ring.
Further, the foamed aluminium board carries out pressure rolling compression before being placed into cavity.
Further, the pressure rolling compression ratio is 40%.
Further, the thickness of the foamed aluminium board after the pressure rolling compression is 50mm.
Further, the bonding agent is epoxy resin adhesive.
Further, the sound insulationg board is perforating gypsum board.
The beneficial effects of the utility model：
The utility model provides a kind of foamed aluminium sound-absorbing dry-type transformer case, and one layer is bonded with aluminium alloy outside plate
Sound insulationg board, and one layer of foamed aluminium board is embedded in inside the housing, air layer is provided between foamed aluminium board and sound insulationg board, sound wave passes through
During foamed aluminium board, back wave will be formed in the presence of air layer and sound insulationg board, and then interferes decay, is effectively reduced
Noise caused by transformer；Four openings are provided with aluminium alloy outside plate, and are provided with sliding panel in the opening, work as needs
When transformer case is internally embedded foamed aluminium board, it is only necessary to sliding panel is pulled outwardly, is then placed in foamed aluminium board, afterwards will be sliding
Dynamic plate inwardly pushes away, and fixes the position of foamed aluminium board, and handling foamed aluminium board is very convenient；Foamed aluminium board is placed into cavity advance
Row pressure rolling is compressed, and foamed aluminium board increases substantially by the processing such as appropriate pressure rolling, compression, absorptivity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of the utility model sound absorption.
Fig. 3 is the relation of foamed aluminium sound-absorbing effect and noise frequency.
Fig. 4 is influence of the pressure rolling compression to foam aluminum shell acoustically effective.
Fig. 5 is influence of the foamed aluminium thickness of slab to defening effect.
Fig. 6 is air layer thickness（L）Influence to foamed aluminium acoustically effective.
Reference numerals list：
1st, foamed aluminium board；2nd, bubble；3rd, walls；4th, through hole；5th, back wave；6th, incidence wave；7th, sound insulationg board；8th, air
Layer；9th, aluminium alloy outside plate；10th, opening one；11st, opening two；12nd, opening three；13rd, opening four；14th, sliding panel；15th, baffle plate；16、
Draw ring.
Embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.
With reference to accompanying drawing, a kind of foamed aluminium sound-absorbing dry-type transformer case described in the utility model, including aluminium alloy outside plate
9, conventional transformer case mainly has aluminium alloy mill card shell, stainless steel casing and spraying steel plate shell three major types.Consider
To the approval of the attractive in appearance and user of transformer case, the outer surface of the transformer case uses aluminium alloy mill card shell, institute
State and sound insulationg board 7 is bonded with by bonding agent on the madial wall of aluminium alloy outside plate 9, the upper end of the aluminium alloy outside plate 9 offers opening
One 10 and opening 2 11, the lower end of the aluminium alloy outside plate 9 offers opening 3 12 and opening 4 13, and the opening 1 is with opening
Mouth 3 12 is on same vertical curve, and the opening 2 11 and opening 4 13 are located on same vertical curve, 2 11 Hes of the opening
Being open between 4 13 and sound insulationg board 7 has gap, is respectively provided with the opening 1, opening 2 11, opening 3 12 and opening 4 13
There is sliding panel 14, the sliding panel 14 is provided with perpendicular to the upper end of aluminium alloy outside plate 9, the upper and lower ends of the sliding panel 14
Baffle plate 15, four pieces of sliding panels 14 combine a cavity with the upper and lower ends of aluminium alloy outside plate 9, bubble are provided with the cavity
Foam aluminium sheet 1, there is air layer 8 between the foamed aluminium board 1 and sound insulationg board 7.
End set of the sliding panel 14 away from aluminium alloy outside plate 9 described in the utility model has draw ring 16, convenient to slide
Plate 14 is pulled outwardly or inwardly pushed away, easy to operate.
Foamed aluminium board 1 carries out pressure rolling compression before being placed into cavity, and foamed aluminium board 1 is processed by appropriate pressure rolling, compression etc.,
Absorptivity increases substantially, as shown in figure 4, because these processing can cause the wall of separated foam 2 to rupture and be changed into through hole 4, becomes
Diffusing reflection occurs at the wall of bubble 2 of exposing surface for the noise waves that depressor is sent, and interacts and cause with its back wave 5
Interference decay.In addition, through the transformer noise transmitted acoustic pulse of through hole 4, decay is expanded in next bubble 2, and
Whenever the bubble 2 for encountering adjacent will repeat above-mentioned expansion, attenuation process.When noise sound wave passes through foamed aluminium board 1, in air
Back wave 5 will be formed in the presence of layer 8 and sound insulationg board 7, and then interferes decay, as shown in Figure 2.
Wherein, the pressure rolling compression ratio of foamed aluminium board 1 is 40%, as shown in figure 4, when the pressure rolling compression ratio of foamed aluminium board 1 is
When 40%, the acoustic absorptivity of foamed aluminium board 1 is best.
The thickness of foamed aluminium board 1 after pressure rolling compression described in the utility model is 50mm, as shown in figure 5, working as foamed aluminium
When the thickness of plate 1 is 50mm, transmission loss of the foamed aluminium board 1 to noise is higher, and acoustically effective is better.
Bonding agent described in the utility model is epoxy resin adhesive, for the cementability between metal and sound insulationg board 7
Good, bonding is more firm.
Sound insulationg board 7 described in the utility model is perforating gypsum board, and sound insulation acoustically effective is good.
Technological means disclosed in the utility model is not limited only to the technological means disclosed in above-mentioned embodiment, also
Including being combined formed technical scheme by above technical characteristic.
Claims (7)
- A kind of 1. foamed aluminium sound-absorbing dry-type transformer case, it is characterised in that：Including aluminium alloy outside plate (9), outside the aluminium alloy Sound insulationg board (7) is bonded with by bonding agent on plate (9) madial wall, the upper end of the aluminium alloy outside plate (9) offers opening one (10) and opening two (11), the lower end of the aluminium alloy outside plate (9) offer opening three (12) and opening four (13), the opening One (10) are located on same vertical curve with opening three (12), and two (11) of the opening and opening four (13) are located at same vertical curve On, have a gap between two (11) of the opening and opening four (13) and sound insulationg board (7), described one (10) that are open, two (11) that are open, Sliding panel (14) is provided with three (12) of opening and opening four (13), the sliding panel (14) is perpendicular to aluminium alloy outside plate (9) Upper end, the upper and lower ends of the sliding panel (14) are provided with baffle plate (15), four pieces of sliding panels (14) with outside aluminium alloy The upper and lower ends of plate (9) combine a cavity, and foamed aluminium board (1), the foamed aluminium board (1) and sound insulation are provided with the cavity There is air layer (8) between plate (7).
- A kind of 2. foamed aluminium sound-absorbing dry-type transformer case according to claim 1, it is characterised in that：The sliding panel (14) end set away from aluminium alloy outside plate (9) has draw ring (16).
- A kind of 3. foamed aluminium sound-absorbing dry-type transformer case according to claim 1, it is characterised in that：The foamed aluminium board (1) pressure rolling compression is carried out before being placed into cavity.
- A kind of 4. foamed aluminium sound-absorbing dry-type transformer case according to claim 3, it is characterised in that：The pressure rolling compression Rate is 40%.
- A kind of 5. foamed aluminium sound-absorbing dry-type transformer case according to claim 3 or 4, it is characterised in that：The pressure rolling The thickness of foamed aluminium board (1) after compression is 50mm.
- A kind of 6. foamed aluminium sound-absorbing dry-type transformer case according to claim 1, it is characterised in that：The bonding agent is Epoxy resin adhesive.
- A kind of 7. foamed aluminium sound-absorbing dry-type transformer case according to claim 1, it is characterised in that：The sound insulationg board (7) it is perforating gypsum board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108494.0U CN207165354U (en) | 2017-08-31 | 2017-08-31 | Foamed aluminium sound-absorbing dry-type transformer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721108494.0U CN207165354U (en) | 2017-08-31 | 2017-08-31 | Foamed aluminium sound-absorbing dry-type transformer case |
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| Publication Number | Publication Date |
|---|---|
| CN207165354U true CN207165354U (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721108494.0U Active CN207165354U (en) | 2017-08-31 | 2017-08-31 | Foamed aluminium sound-absorbing dry-type transformer case |
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| Country | Link |
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| CN (1) | CN207165354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4312236A1 (en) | 2022-07-13 | 2024-01-31 | TenneT TSO GmbH | Transformer housing, transformer having such a transformer housing, and arrangements of these |
-
2017
- 2017-08-31 CN CN201721108494.0U patent/CN207165354U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4312236A1 (en) | 2022-07-13 | 2024-01-31 | TenneT TSO GmbH | Transformer housing, transformer having such a transformer housing, and arrangements of these |
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