CN106402042A - Noise reduction device for air inlet of main ventilator of tunnel - Google Patents
Noise reduction device for air inlet of main ventilator of tunnel Download PDFInfo
- Publication number
- CN106402042A CN106402042A CN201611034839.2A CN201611034839A CN106402042A CN 106402042 A CN106402042 A CN 106402042A CN 201611034839 A CN201611034839 A CN 201611034839A CN 106402042 A CN106402042 A CN 106402042A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- plate
- welded
- top cap
- backplate
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000030279 gene silencing Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 3
- 230000003584 silencer Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a noise reduction device for an air inlet of a main ventilator of a tunnel. The noise reduction device comprises a flange, a top cap, a connection rib plate, a filter screen, a noise reduction material, a flow collector, a protective plate, an enclosing plate and noise reduction wall plates. The top cap is connected with the flow collector through the connection rib plate. The filter screen is fixed to the connection rib plate. The noise reduction material is arranged in the top cap. The flange is arranged on the flow collector. The noise reduction device is characterized in that the protective plate is welded to the flow collector; the enclosing plate is welded to the protective plate; the multiple noise reduction wall plates are welded to the enclosing plate; and air enters through spaces among the noise reduction wall plates and then enters a draught fan through the filter screen. The noise reduction device has the beneficial effects that the direction of noise reflected out of an inlet of a side-air-inlet noise reduction device adopted in the prior art is changed once more; the noise is absorbed by the enclosing plate; the noise of the air inlet of the main ventilator is reduced; and safety of driving in the tunnel is guaranteed.
Description
Technical field
The present invention relates to a kind of tunnel main fan is and in particular to a kind of tunnel main fan air inlet silencing means.
Background technology
At present, the structure of tunnel main fan muffler is air-flow from axially into blower fan（As shown in accompanying drawing 1,2）, have
Certain sound deadening.In addition, Chinese Patent Application No.：2016106577702 disclose that " a kind of boiler blower side air intake disappears
Sound device "（As shown in accompanying drawing 3,4）, boiler blower side suction silencer, including flange, top cap, connection gussets, screen pack, disappear
Sound material, current collector it is characterised in that：It is connected with connection gussets between top cap and current collector, connection gussets are fixed with filtration
Net, has quieter material in top cap, current collector has flange, and air enters boiler blower from screen pack, improves fan noise
Route of transmission, obtains preferable noise reduction.But, side suction silencer needs to be carried further for tunnel erasure effect
High.
Content of the invention
The purpose of the present invention is exactly that prior art is improved, and provides a kind of tunnel main fan air inlet noise reduction dress
Put.
The technical solution used in the present invention is to achieve these goals：A kind of tunnel main fan air inlet noise reduction dress
Put, including flange, top cap, connection gussets, screen pack, quieter material, current collector, backplate, coaming plate, noise reduction wallboard, top cap and collection
Connected with connection gussets between stream device, connection gussets are fixed with screen pack, in top cap, have quieter material, current collector has method
Blue it is characterised in that：Backplate is welded with current collector, backplate is welded with coaming plate, coaming plate is welded with multiple noise reduction wallboards；Described shield
Plate, coaming plate, noise reduction wallboard are made up of filling superfine glass silk flosssilk wadding between double-layer plate, inside backplate, inside coaming plate, noise reduction wallboard
There is bloop on the steel plate of both sides；Air enters between noise reduction wallboard, then enters blower fan through screen pack.
Compared with prior art, the invention has the beneficial effects as follows：Prior art side suction silencer entrance is reflected
Come noise change direction again, with coaming plate absorb, reduce the air inlet noise of main fan it is ensured that in the tunnel in drive a vehicle peace
Entirely.
Brief description
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the cross-sectional view of prior art air inlet through hollow shaft muffler；
Fig. 2 is the left view of figure；
Fig. 3 is the partial schematic sectional view of prior art boiler blower side suction silencer；
Fig. 4 is Fig. 3 A-A generalized section；
Fig. 5 is a kind of structure cross-sectional schematic of tunnel of embodiment of the present invention main fan air inlet silencing means.
Fig. 6 is the left view of Fig. 5.
Icon explanation：1. shell；2. silencing cotton；3. diversion column；4. flange；5. top cap；6. connection gussets；7.
Screen pack；8. quieter material；9. current collector；10. backplate；11. coaming plates；12. noise reduction wallboards；13. reinforcements.
Specific embodiment
Fig. 1 is the cross-sectional view of prior art air inlet through hollow shaft muffler；Fig. 2 is the left view of figure；Prior art
Air inlet through hollow shaft muffler is made up of shell 1, silencing cotton 2, diversion column 3 and flange 4, and airflow direction enters along diversion column axial direction straight line
Enter, there is certain sound deadening, but, its erasure effect needs to be improved further.
Fig. 3 is the partial schematic sectional view of prior art boiler blower side suction silencer；Fig. 4 is that Fig. 3 A-A section shows
It is intended to；Prior art boiler blower side suction silencer, including flange 4, top cap 5, connection gussets 6, screen pack 7, noise reduction material
Material 8, current collector 9, are connected with connection gussets 6 between top cap 5 and shrink-ring 9, connection gussets 6 are fixed with screen pack 7, described
Screen pack 7 be：Grid is the steel wire of 20*20mm, prevents the foreign matter of sheet to be inhaled into blower fan, such as towel, gloves etc.；Top
There is quieter material 8, described quieter material 8 is in cap 5：Flame-retardant sponge or mineral wool；Flange 4 is had on current collector 9.
Embodiment
A kind of tunnel of present invention main fan air inlet silencing means and prior art side suction silencer difference exist
In：Backplate 10 is welded with current collector 9, backplate 10 is welded with coaming plate 11, coaming plate 11 is welded with multiple noise reduction wallboards 12, current collector 9
It is welded with several reinforcements 13 and backplate 10 between；Described backplate 10, coaming plate 11, noise reduction wallboard 12 are filled by between double-layer plate
Superfine glass silk flosssilk wadding is made, and inside backplate 10 inner side, coaming plate 11, has bloop on the steel plate of noise reduction wallboard 12 both sides；Air from
Enter between noise reduction wallboard 12, then enter blower fan through screen pack 7.The present invention will be anti-for prior art side suction silencer entrance
The noise shooting out is changed direction again, is absorbed with coaming plate, reduces the air inlet noise of main fan it is ensured that driving a vehicle in tunnel
Safety.
Claims (1)
1. a kind of tunnel main fan air inlet silencing means, including flange, top cap, connection gussets, screen pack, quieter material,
Current collector, backplate, coaming plate, noise reduction wallboard, are connected with connection gussets between top cap and current collector, and connection gussets are fixed with filtration
Net, has quieter material in top cap, current collector has flange it is characterised in that：Backplate is welded with current collector, backplate is welded with and encloses
Plate, coaming plate is welded with multiple noise reduction wallboards；Described backplate, coaming plate, noise reduction wallboard are by filling superfine glass silk between double-layer plate
Cotton is made, and inside backplate, inside coaming plate, has bloop on the steel plate of noise reduction wallboard both sides；Air enters between noise reduction wallboard,
Enter blower fan through screen pack again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034839.2A CN106402042A (en) | 2016-11-23 | 2016-11-23 | Noise reduction device for air inlet of main ventilator of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611034839.2A CN106402042A (en) | 2016-11-23 | 2016-11-23 | Noise reduction device for air inlet of main ventilator of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106402042A true CN106402042A (en) | 2017-02-15 |
Family
ID=58081516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611034839.2A Pending CN106402042A (en) | 2016-11-23 | 2016-11-23 | Noise reduction device for air inlet of main ventilator of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402042A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676308A (en) * | 2017-10-21 | 2018-02-09 | 中船澄西船舶修造有限公司 | Air inlet denoising device |
| CN110541842A (en) * | 2018-05-28 | 2019-12-06 | 青岛海尔智能技术研发有限公司 | Fan and ducted air conditioner |
| CN114396389A (en) * | 2021-12-31 | 2022-04-26 | 英飞同仁风机股份有限公司 | Upward blowing type silencing roof fan |
-
2016
- 2016-11-23 CN CN201611034839.2A patent/CN106402042A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676308A (en) * | 2017-10-21 | 2018-02-09 | 中船澄西船舶修造有限公司 | Air inlet denoising device |
| CN110541842A (en) * | 2018-05-28 | 2019-12-06 | 青岛海尔智能技术研发有限公司 | Fan and ducted air conditioner |
| CN114396389A (en) * | 2021-12-31 | 2022-04-26 | 英飞同仁风机股份有限公司 | Upward blowing type silencing roof fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
|
| WD01 | Invention patent application deemed withdrawn after publication |