CN200976304Y - Noise reducer for large-sized converter transformer - Google Patents
Noise reducer for large-sized converter transformer Download PDFInfo
- Publication number
- CN200976304Y CN200976304Y CN 200620158675 CN200620158675U CN200976304Y CN 200976304 Y CN200976304 Y CN 200976304Y CN 200620158675 CN200620158675 CN 200620158675 CN 200620158675 U CN200620158675 U CN 200620158675U CN 200976304 Y CN200976304 Y CN 200976304Y
- Authority
- CN
- China
- Prior art keywords
- converter transformer
- sound absorption
- perforated plate
- metal
- noise
- Prior art date
- 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
Links
Images
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model relates to a large-scale noise reduction device, which is characterized in that: a row of a ventilative noise elimination devices is arranged in the front of a heat elimination fan machine for a converter transformer; a row of sound absorption and insulation barriers is arranged on the top of the ventilative noise elimination device; a plurality of functional absorbers are arranged at a certain interval on the fire wall around the converter transformer; the sound absorption and insulation covers are arranged on the top of the fire wall and bulge towards the converter transformer. According to the concrete conditions, the utility model takes a plurality of measures in the noise reducing treatment of the large-scale converter transformer, reducing the noise in the maximum magnitude, more particularly to the medium and low frequency noise which pollutes the environment and is difficult to be controlled, and can ensure the ventilation and cooling result of the converter transformer. The test result of the utility model shows that the test average of the tested part decreases about 15 to 20 dB (A) after the noise reducing treatment.
Description
Technical field
The utility model relates to a kind of denoising device, particularly about a kind of large-sized converter transformer denoising device.
Background technology
The large-scale ultrahigh pressure DC converter station is one of important electric power facility in the national grid power transformating and supplying facility, in the running of current conversion station, superhigh pressure converter transformer, smoothing reactor and filtering in standing, the equipment such as reactor of capacitor group, can produce more serious medium and low frequency noise radiation, the living environment around the current conversion station is caused bigger pollution.Wherein, the superhigh pressure converter transformer is again the capital equipment that causes noise pollution.Therefore, administer very urgent to the noise of large-scale ultrahigh pressure converter transformer.
In the prior art,, mainly be to take simple enclosing sound insulation mode to the method that the noise of large-scale ultrahigh pressure converter transformer is administered.At first, because the medium and low frequency noise that large-sized converter transformer produces has very strong diffraction characteristic, be difficult to separate propagation of noise with simple enclosing sound insulation mode, and for the ultrahigh voltage power facility, its site environment has reasons such as a lot of alive circuits, general enclosing sound insulation mode is difficult to accomplish especially near noise source, and converter transformer is in the normal conditions such as necessary heat radiation, ventilation that also need guarantee in service simultaneously, and this causes very big difficulty also for general enclosing sound insulation mode.So, the present noise reduction measure of taking, its effect is very undesirable.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of large-sized converter transformer denoising device that has obvious noise reduction under assurance converter transformer good heat radiating and ventilation condition.
For achieving the above object, the utility model is taked following technical scheme: a kind of large-sized converter transformer denoising device, it is characterized in that, it comprises: a row is arranged on the ventilation noise eliminator in converter transformer cooling fan the place ahead, one row is arranged on the sound absorption and insulation barrier at described ventilation noise eliminator top, is disposed on the suspended absorber on the fire compartment wall and the sound absorption and insulation shield that is arranged on fire compartment wall top, described both sides and protrudes out to described converter transformer direction around the described converter transformer.
Described ventilation noise eliminator comprises steel frame and is plugged in the interior some impedance complex formula anechoic sheets of described steel frame that each described impedance complex formula anechoic sheet is composited by a resistance noise reduction unit and a reactive muffling unit; Described resistance noise reduction unit is made up of metal perforated plate and the porous fibre shape sound-absorbing material by glass fabric parcel that is arranged in the metal perforated plate, and described reactive muffling unit is by being arranged on the noise elimination short tube on the protection slab and forming with the metal blind plate that protection slab forms cavity.
The bottom of described ventilation noise eliminator steel frame is provided with chute, and corresponding with it, ground is provided with slide rail.
Described sound absorption and insulation barrier is tabular, and its top tilts to described converter transformer direction, described sound absorption and insulation barrier surface is a metal perforated plate to the one side of described converter transformer, the one side of described converter transformer is the metal blind plate dorsad, be full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and described metal blind plate, the top offers openable ventilating window between the fan operation of described sound absorption and insulation barrier bottom.
Described sound absorption and insulation barrier is tabular, and described dorsad converter transformer is obliquely installed between described fan operation and the top of ventilation noise eliminator, open-top between described fan operation, the closed front of described sound absorption and insulation barrier, and be provided with openable ventilating window at blind end, described sound absorption and insulation barrier upper surface is the metal blind plate, and lower surface is a metal perforated plate, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and the described metal blind plate.
Described suspended absorber is the unlimited box body in back that a metal perforated plate surrounds, and the front portion is fixed with the porous fibre shape sound-absorbing material of one deck by the glass fabric parcel of uniform thickness in the described box body, leaves the space between described sound-absorbing material and the described box body bottom.
The thickness up and down of described box body is identical.
The top of described box body is thick, and bottom thin, side projection are trapezoidal.
The bottom surface of described sound absorption and insulation shield is a metal perforated plate, and end face is the metal blind plate, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and described metal blind plate.
The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is owing to being provided with by steel frame in the place ahead of cooling fan and being plugged in the ventilation noise eliminator that the anechoic sheet in the steel frame is formed, therefore when air flow through out-of-date, can form a plurality of ventilation noise eliminations road by the gap between the anechoic sheet, thereby guarantee when reducing noise, to have guaranteed the ventilation and heat of converter transformer.2, of the present utility model owing to adopt impedance complex formula anechoic sheet, therefore can eliminate noise better, particularly the medium and low frequency noise by the composite action of resistance noise reduction unit and reactive muffling unit.3, the utility model is provided with slide rail owing to be provided with chute in the steel frame of ventilation noise eliminator bottom on ground, therefore when blower fan or converter transformer are safeguarded, can easily the ventilation noise eliminator be pulled away from, and vacates service clearance.4, the utility model is provided with the sound absorption and insulation barrier owing to be arranged on the top of ventilation noise eliminator, therefore can further shield noise, two kinds of sound absorption and insulation barrier set-up modes particularly of the present utility model, no matter be air-exhaust type or air draught type cooling, can both well inlet air flow and exhaust stream be separated, stop the backflow of air, guarantee the ventilating sound-proof effect better.5, the utility model is owing to be arranged to the box body shape with suspended absorber, and in box body, be provided with sound-absorbing material and resonating cativty, simultaneously box body is arranged on the converter transformer fire compartment wall on every side, therefore can be near the place of noise source absorption of noise, particularly medium and low frequency noise to greatest extent.6, the utility model is owing to be provided with the sound absorption and insulation shield that protrudes out to converter transformer at both sides fire prevention coping, therefore both the acoustic energy of converter transformer can be limited in the spatial dimension of a minimum, do not influence the alive circuit of ultrahigh voltage power facility again, further the sound absorption acoustic energy reduces to extraradial acoustical power.The utility model according to various concrete conditions, adopts various noise reduction measures simultaneously in the large-sized converter transformer noise reduction is administered, the result shows after tested, and about 15～20dB (A) descends before the comparable noise reduction of testing mean at test position is administered.
Description of drawings
Fig. 1 is the utility model structural upright schematic diagram
Fig. 2 is the utility model schematic side view
Fig. 3 is the utility model impedance complex formula anechoic sheet structural representation
Fig. 4 is the another kind of impedance complex formula of a utility model anechoic sheet structural representation
Fig. 5 is another impedance complex formula anechoic sheet structural representation of the utility model
Fig. 6 is the utility model suspended absorber structural representation
Embodiment
Below in conjunction with drawings and Examples, structure of the present utility model is described in detail.
As shown in Figure 1, the utility model comprises: a row is arranged on the ventilation noise eliminator 2 in converter transformer 1 cooling fan the place ahead, one row is arranged on the sound absorption and insulation barrier 3 at ventilation noise eliminator 2 tops, be disposed on the suspended absorber 5 on the fire compartment wall 4 around the converter transformer 1, and the sound absorption and insulation shield 6 that is arranged on both sides fire compartment wall 4 tops and protrudes out to converter transformer 1 direction.
The utility model ventilation noise eliminator 2 comprises steel frame 21 and a few row's anechoic sheets 22 that are plugged in the steel frame 21, anechoic sheet 22 can be the various anechoic sheets of prior art, also can be that (apply for a patent separately, number of patent application is the newly-designed impedance complex formula of the applicant anechoic sheet: 200620157413.3).As Fig. 3, Fig. 4, shown in Figure 5, each sheet impedance complex formula anechoic sheet 22 of the utility model all is to be composited by a resistance noise reduction unit 23 and a reactive muffling unit 24.Resistance noise reduction unit 23 is made up of metal perforated plate and the porous fibre shape sound-absorbing material by glass fabric parcel that is arranged in the metal perforated plate, and reactive muffling unit 24 is by being arranged on the noise elimination short tube on the protection slab and forming with the metal blind plate that protection slab forms cavity.The compound mode of resistance noise reduction unit 23 and reactive muffling unit 24 makes up (as shown in Figure 3) before and after can being, also can be upper and lower combination (as shown in Figure 4); The mode of upper and lower combination can also be two-sided protection slab (as shown in Figure 5).
Convenient in order to overhaul blower fan, can chute be set in steel frame 21 bottoms of whole ventilation noise eliminator 2, slide rail is set on ground, be that ventilation noise eliminator 2 can be pulled away from the service position when blower fan is overhauled.
As shown in Figure 1, sound absorption and insulation barrier 3 of the present utility model is tabular, and is vertically mounted on the top of ventilation noise eliminator 2 rear ends, and the top 31 of sound absorption and insulation barrier 3 tilts to converter transformer 1 direction, and supports with brace rod 32.Sound absorption and insulation barrier 3 is a metal perforated plate towards the one side of converter transformer 1, and the one side of converter transformer 1 is the metal blind plate dorsad, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel between metal perforated plate and metal blind plate.As shown in Figure 2, sound absorption and insulation barrier 3 of the present utility model also can tilt to install, tiltedly extend to ventilation noise eliminator 2 front top from 7 inboard between fan operation, the front 33 with oblique sound absorption and insulation barrier 3 is closed then always, and supports with brace rod 34.
Two kinds of mounting meanss of above-mentioned sound absorption and insulation barrier 3, can cooperate between different fan operations 7 the mode of windowing (as shown in Figure 1), if sound absorption and insulation barrier 3 vertically and to converter transformer 1 is obliquely installed, then the ventilating window (not shown) is offered at 7 top between fan operation; If sound absorption and insulation barrier 3 converter transformer 1 direction is dorsad installed (as shown in Figure 2), the top of fan operation chamber 7 can be opened wide, and ventilating window 71 is opened on the shut of sound absorption and insulation barrier 3 fronts 33.No matter be the ventilating window at operation room 7 tops, or the ventilating window of acoustic barrier 3 fronts 33 71 all closes when flat, just can open in case weather is too warm.
As shown in Figure 1, suspended absorber 5 of the present utility model is a box body 51, box body 5 is to be surrounded and the back is opened wide and not had backboard by metal perforated plate, box body 51 is fixed on converter transformer 1 fire compartment wall 4 on every side, the front portion is fixed with the porous fibre shape sound-absorbing material 52 by the glass fabric parcel of one deck uniform thickness in the box body 51, leave certain space between sound-absorbing material 52 and the fire compartment wall 4, can shield low-frequency noise preferably like this.Suspended absorber 5 of the present utility model has two kinds of versions, and a kind of is to be designed to the box body 51 of consistency of thickness up and down, and this box body 51 is arranged in the face of on the fire compartment wall 4 around the converter transformer 1.Another kind is designed to that top thickness is big, and bottom thickness is little, and side projection is trapezoidal box body 51 ' (as Fig. 1, shown in Figure 6), and this box body 51 ' is arranged on the fire compartment wall 4 of converter transformer 1 top, and the front surface inclined plane of box body 51 ' is to converter transformer 1.
The erection space of above-mentioned suspended absorber 5 accounts for 20～50% of the whole area of fire compartment wall, and general 30% just can receive the effect of exchange.
As shown in Figure 1, sound absorption and insulation shield 6 of the present utility model is tabular, and its end face is a metal blind plate 61, and the bottom surface is a metal perforated plate 62, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel in it.Sound absorption and insulation shield 6 is arranged on both sides fire compartment wall 4 tops, and protrudes out to converter transformer 1 direction, and its effect is to reduce converter transformer 1 space on every side as far as possible, to shield noise more.
Claims (10)
1, a kind of large-sized converter transformer denoising device, it is characterized in that, it comprises: a row is arranged on the ventilation noise eliminator in converter transformer cooling fan the place ahead, one row is arranged on the sound absorption and insulation barrier at described ventilation noise eliminator top, is disposed on the suspended absorber on the fire compartment wall and the sound absorption and insulation shield that is arranged on fire compartment wall top, described both sides and protrudes out to described converter transformer direction around the described converter transformer.
2, a kind of large-sized converter transformer denoising device as claimed in claim 1, it is characterized in that: described ventilation noise eliminator comprises steel frame and is plugged in the interior some impedance complex formula anechoic sheets of described steel frame that each described impedance complex formula anechoic sheet is composited by a resistance noise reduction unit and a reactive muffling unit; Described resistance noise reduction unit is made up of metal perforated plate and the porous fibre shape sound-absorbing material by glass fabric parcel that is arranged in the metal perforated plate, and described reactive muffling unit is by being arranged on the noise elimination short tube on the protection slab and forming with the metal blind plate that protection slab forms cavity.
3, a kind of large-sized converter transformer denoising device as claimed in claim 1, it is characterized in that: the bottom of described ventilation noise eliminator steel frame is provided with chute, and corresponding with it, ground is provided with slide rail.
4, a kind of large-sized converter transformer denoising device as claimed in claim 2, it is characterized in that: the bottom of described ventilation noise eliminator steel frame is provided with chute, and corresponding with it, ground is provided with slide rail.
5, as claim 1 or 2 or 3 or 4 described a kind of large-sized converter transformer denoising devices, it is characterized in that: described sound absorption and insulation barrier is tabular, and its top tilts to described converter transformer direction, described sound absorption and insulation barrier surface is a metal perforated plate to the one side of described converter transformer, the one side of described converter transformer is the metal blind plate dorsad, be full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and described metal blind plate, the top offers openable ventilating window between the fan operation of described sound absorption and insulation barrier bottom.
6, as claim 1 or 2 or 3 or 4 described a kind of large-sized converter transformer denoising devices, it is characterized in that: described sound absorption and insulation barrier is tabular, and described dorsad converter transformer is obliquely installed between described fan operation and the top of ventilation noise eliminator, open-top between described fan operation, the closed front of described sound absorption and insulation barrier, and be provided with openable ventilating window at blind end, described sound absorption and insulation barrier upper surface is the metal blind plate, lower surface is a metal perforated plate, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and the described metal blind plate.
7, as claim 1 or 2 or 3 or 4 described a kind of large-sized converter transformer denoising devices, it is characterized in that: described suspended absorber is the unlimited box body in back that a metal perforated plate surrounds, the front portion is fixed with the porous fibre shape sound-absorbing material of one deck by the glass fabric parcel of uniform thickness in the described box body, leaves the space between described sound-absorbing material and the described box body bottom.
7, a kind of large-sized converter transformer denoising device as claimed in claim 7, it is characterized in that: the thickness up and down of described box body is identical.
9, a kind of large-sized converter transformer denoising device as claimed in claim 7, it is characterized in that: the top of described box body is thick, and bottom thin, side projection are trapezoidal.
10, as claim 1 or 2 or 3 or 4 described a kind of large-sized converter transformer denoising devices, it is characterized in that: the bottom surface of described sound absorption and insulation shield is a metal perforated plate, end face is the metal blind plate, has been full of the porous fibre shape sound-absorbing material by the glass fabric parcel between described metal perforated plate and described metal blind plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158675 CN200976304Y (en) | 2006-12-01 | 2006-12-01 | Noise reducer for large-sized converter transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620158675 CN200976304Y (en) | 2006-12-01 | 2006-12-01 | Noise reducer for large-sized converter transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200976304Y true CN200976304Y (en) | 2007-11-14 |
Family
ID=38902585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620158675 Expired - Lifetime CN200976304Y (en) | 2006-12-01 | 2006-12-01 | Noise reducer for large-sized converter transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200976304Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329939B (en) * | 2008-05-04 | 2011-04-13 | 国网直流工程建设有限公司 | Denoiser of converter transformer |
| CN103928221A (en) * | 2013-08-30 | 2014-07-16 | 国家电网公司 | Transformer noise-reduction combined sound absorbing device |
| CN109272981A (en) * | 2018-10-23 | 2019-01-25 | 云南电网有限责任公司 | A kind of substation's denoising device |
-
2006
- 2006-12-01 CN CN 200620158675 patent/CN200976304Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329939B (en) * | 2008-05-04 | 2011-04-13 | 国网直流工程建设有限公司 | Denoiser of converter transformer |
| CN103928221A (en) * | 2013-08-30 | 2014-07-16 | 国家电网公司 | Transformer noise-reduction combined sound absorbing device |
| CN109272981A (en) * | 2018-10-23 | 2019-01-25 | 云南电网有限责任公司 | A kind of substation's denoising device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201893227U (en) | Ventilation and denoising device used in ultra-high voltage converter transformer | |
| CN202249622U (en) | Ventilating noise-elimination window for transformer station | |
| CN200976304Y (en) | Noise reducer for large-sized converter transformer | |
| CN206379666U (en) | A kind of stable type Prefabricated high-low voltage transformer substation of circulating dust-removing radiating | |
| CN204987331U (en) | Dismantled and assembled, low nuclear level cooling unit that vibrates | |
| CN204626680U (en) | Generator room noise eliminating silencer | |
| CN2615622Y (en) | Civil and industrial cooling tower noise eliminating silencer | |
| CN106504878A (en) | A kind of denoising device for converter power transformer | |
| CN209643151U (en) | A kind of novel and multifunctional Electric Appliance Cabinet | |
| CN208589690U (en) | A kind of wall-mounted distribution box | |
| CN209277512U (en) | Ancillary equipment is used in a kind of horizontal attached wall construction | |
| CN213093637U (en) | Electrical cabinet capable of effectively delaying aging of electrical element | |
| CN207019176U (en) | A kind of new blower fan of suspension type | |
| CN110608064A (en) | Ceiling type installation fan type air purification system for tunnel ventilation | |
| CN206505795U (en) | A kind of dry-type transformer with quick heat radiating cooling function | |
| CN206259614U (en) | A kind of power equipment noise reduction buffer device | |
| CN210217256U (en) | Green construction noise-reducing and dust-preventing device for building site factory building | |
| CN105083319B (en) | Locomotive main air reservoir mounting bracket | |
| CN210866907U (en) | Ventilation unit for power protection equipment | |
| CN208280350U (en) | A kind of Anti-seismic used in nuclear power station wall hole installing type silencer | |
| CN208931340U (en) | Frame-type rail vehicle air conditioner frame, air conditioning box body and air-conditioner set | |
| CN206742669U (en) | A kind of super capacitor cabinet | |
| CN208045951U (en) | A kind of outdoor guard shield of ground resistance | |
| CN205977416U (en) | Vehicular generating set's silence case | |
| CN207471726U (en) | Core grade air-treatment unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING LUCHUANG ACOUSTIC ENGINEERING CO., LTD. Free format text: FORMER NAME: BEIJING GREENTEC ACOUSTIC ENGINEERING HOLDINGS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100080 Beijing city Haidian District No. 1 Suzhou Street Lvchuang building five Patentee after: Beijing Luchuang Acoustic Engineering Co., Ltd. Address before: 100080 Beijing city Haidian District No. 1 Suzhou Street Lvchuang building five Patentee before: Beijing Greentec Acoustic Engineering Holdings Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071114 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Luchuang Acoustic Engineering Co., Ltd. Document name: Notification of Expiration of Patent Right Duration |