CN204082674U - The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction - Google Patents
The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction Download PDFInfo
- Publication number
- CN204082674U CN204082674U CN201420491962.7U CN201420491962U CN204082674U CN 204082674 U CN204082674 U CN 204082674U CN 201420491962 U CN201420491962 U CN 201420491962U CN 204082674 U CN204082674 U CN 204082674U
- Authority
- CN
- China
- Prior art keywords
- dunnage
- cooling unit
- centrifugal blower
- noise reduction
- spiral case
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses the box spiral case of a kind of electric rail car group cooling unit centrifugal blower noise reduction, comprise housing (1), housing (1) is by top board (31), air side base plate, bottom (33), collateral fagging (32), inlet side shrouding (21), motor side dunnage (35) and motor mounting plate (34) enclose and form, inlet side shrouding (21) is provided with the circular hole matched with slip ring mouth, motor side dunnage (35) and motor mounting plate (34) are positioned at housing (1) rear end, motor side dunnage (35) is provided with the circular hole matched with centrifugal blower, also comprise the absorbent treatment (2) that porous material is made, inlet side shrouding (21), top board (31) and collateral fagging (32) internal surface are equipped with absorbent treatment (2), absorbent treatment is provided with dunnage outside (2), absorbent treatment (2) is fixed on housing (1) by dunnage.There is good result for noise reduction, be applicable to rail motor set cooling unit and use.
Description
Technical field
The utility model relates to the structure of electric rail car group cooling unit.
Background technique
Electric rail car group cooling unit is the critical component of motor train unit traction system, be arranged in the equipment compartment under rail motor set vehicle frame, in running, the cooling blower of cooling unit inevitably produces noise, noise reaches certain intensity, can cause damage to vehicle interior and periphery personnel, directly affect the travelling comfort that passenger takes.Along with the progress of society, the raising of people's living standard, also increasingly strict to the requirement of noise, adopting suitable means to reduce noise has become instant problem.
At present, it is generally the noise reduction that structure by optimizing draught fan impeller and air channel realizes cooling unit, draught fan impeller is under flow and the certain condition of pressure head, the effect of reduction noise in more among a small circle can be played by the structure optimizing impeller and air channel, but along with rail motor set speed improve constantly, cooling unit also improves constantly the parameter request such as fan delivery, blast, and the structure be difficult to by means of only optimizing draught fan impeller and air channel just can reach the requirement of client to noise.
Model utility content
The technical problem that the utility model solves is under the condition of existing space structure, reduces the noise of cooling unit to greatest extent.
The technical solution adopted in the utility model is the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction, the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction, comprise housing, housing is by top board, air side, bottom base plate, collateral fagging, inlet side shrouding, motor side dunnage and motor mounting plate enclose and form, top board parallels with air side, bottom base plate and is connected by the collateral fagging of casing between the two, inlet side shrouding is positioned at housing forward end, inlet side shrouding is provided with the circular hole matched with slip ring mouth, motor side dunnage and motor mounting plate are positioned at housing rear end, motor side dunnage is provided with the circular hole matched with centrifugal blower, it is characterized in that: also comprise the absorbent treatment that porous material is made, inlet side shrouding, top board and collateral fagging internal surface are equipped with absorbent treatment, dunnage is provided with outside absorbent treatment, absorbent treatment is fixed on housing by dunnage.
Absorbent treatment thickness is 20-60mm, and the material unit weight of absorbent treatment is 30-60kg/m
3.
Absorbent treatment adopts the polyester fibre acoustical cotton of fireproof environmental.
Dunnage is mesh dunnage, and the rounded structure of mesh of mesh dunnage, rectangular configuration or polygon structure, mesh aperture is 5-20mm, and punching rate is 40%-70%.
Mesh dunnage material is stainless steel or aluminum alloy, and mesh dunnage is monolithic construction or by split-type structural.
Dunnage is micropore dunnage, and absorbent treatment is supported by micropore dunnage and is fixed on housing.
Top board or collateral fagging are provided with mounting hole, are connected with cooling unit mounting suspension or car body suspension bracket by vibration damper or bolt.
Housing Placement comprises two kinds, and mode one is inlet side shrouding, top board, collateral fagging, air side, bottom base plate, motor side dunnage are riveted by welding, riveted joint or welding the mode that combines and be interconnected; Mode two is that collateral fagging adopts with motor side dunnage to weld, rivet or weld and rivets the mode combined and form basic components, and inlet side shrouding and top board are bolted in basic components.
Air side, bottom base plate is provided with the grid type exhaust outlet of rectangle, and grid hole is rectangular.
The beneficial effects of the utility model are the noises effectively decreased because flow perturbation causes, and reduce cooling unit noise pollution to external world.
Accompanying drawing explanation
Fig. 1 is two centrifugal blower noise-reduction type casing worm frame schematic diagram.
Fig. 2 is the casing worm frame schematic diagram of single centrifugal blower.
Fig. 3 is the casing worm frame schematic diagram of three centrifugal blowers.
Fig. 4 is casing worm frame schematic diagram of the present utility model.
Fig. 5 is casing worm frame schematic diagram of the present utility model.
Be labeled as in figure: 1-housing, 2-absorbent treatment, 3-mesh dunnage, 21-inlet side shrouding, 31-top board, the collateral fagging of 32-, 33-air side base plate, 34-motor mounting plate, 35-motor side dunnage.
Embodiment
The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction comprises housing 1, housing 1 is by top board 31, air side, bottom base plate 33, collateral fagging 32, inlet side shrouding 21, motor side dunnage 35 and motor mounting plate 34 composition enclose and form, top board 31 parallels with air side, bottom base plate 33 and is connected by the collateral fagging 32 of casing between the two, inlet side shrouding 21 is positioned at housing 1 front end, inlet side shrouding 21 is provided with the circular hole matched with slip ring mouth, motor side dunnage 35 and motor mounting plate 34 are positioned at housing 1 rear end, motor side dunnage 35 is provided with the circular hole matched with centrifugal blower.Described inlet side shrouding 21 has the intake grill of a circle, and the size of intake grill and the slip ring mouth of blower fan match; Air side base plate is the grid type exhaust outlet of rectangle, grid hole is rectangular, the size of grid hole should meet the strength and stiffness of base plate, the resistance of the exhaust outlet of centrifugal blower also will be made less, and play the effect effectively preventing the foreign matter such as leaf, plastic bag from entering.
The roof box 31 of box spiral case or the collateral fagging 32 of casing are provided with mounting hole, are connected with cooling unit mounting suspension or car body suspension bracket by vibration damper or bolt.
In order to noise-decreasing, be provided with the absorbent treatment 2 that porous material is made in housing 1, absorbent treatment 2 is arranged on inlet side shrouding 21, top board 31 and collateral fagging 32 internal surface, and motor side dunnage 35 place is without the need to installing porous sound-absorbing material.Be provided with dunnage outside absorbent treatment 2, absorbent treatment 2 is fixed on housing 1 by bolt by dunnage.As shown in Figure 1, the mesh dunnage of box for right side spiral case hidden in Fig. 1, the mesh dunnage of the box spiral case in left side only draws part mesh.
Porous sound-absorbing material adopts the polyester fibre acoustical cotton of fireproof environmental, and material thickness is between 20-60mm, and material unit weight is being 30-60kg/m
3.
Dunnage adopts mesh dunnage, and material therefor is stainless steel or aluminum alloy, can adopt monolithic construction, also can adopt split-type structural; Mesh dunnage mesh can be round structure, rectangular configuration, and also can be polygon structure, the aperture of mesh can between 5-20mm, punching rate 40%-70%.
Mesh dunnage 3 can adopt monolithic construction, also can adopt split-type structural, that is can be that whole piece mesh sheet metal bending forms, and also can be docked by many sections of mesh sheet materials and form; Mesh dunnage mesh can be round structure, rectangular configuration, and also can be polygon structure, the aperture of mesh can between 5-20mm.
Dunnage also can adopt micropore supporting plate structure, and leaves anti-sound space after porous sound-absorbing material, also can play noise reduction, but the shortcoming of the program is complex structure, and thickness direction is comparatively large, is not too applicable to the requirement of compact structure.
Housing 1 structure of the utility model casing spiral case can adopt all-in-one-piece structure, the i.e. inlet side shrouding 21 of casing, top board 31, the mode that collateral fagging 32, air side, bottom base plate 33, motor side dunnage 35 adopt welding or riveted joint or welding riveted joint to combine forms parts;
Also can adopt split-type structural, namely collateral fagging 32, motor side dunnage 35 are connected by bolt with top board 31 with inlet side shrouding 21 after adopting the mode of welding or riveted joint to form parts; This structure of box spiral case effectively can ensure the installation strength of structure, and is convenient to the assembly and disassembly of centrifugal blower.
Motor side dunnage 35 can adopt dull and stereotyped form, and the form of flanging also can be adopted to strengthen the intensity of structure as shown in the figure;
Motor side dunnage 35 realizes the installation and removal of centrifugal blower by circular arc opening, and the size of circular hole should reduce complexity and the weight of structure under the condition of intensity ensureing structure as far as possible.
Claims (9)
1. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction, comprise housing (1), housing (1) is by top board (31), air side base plate, bottom (33), collateral fagging (32), inlet side shrouding (21), motor side dunnage (35) and motor mounting plate (34) enclose and form, top board (31) parallels with air side, bottom base plate (33) and is connected by the collateral fagging of casing (32) between the two, inlet side shrouding (21) is positioned at housing (1) front end, inlet side shrouding (21) is provided with the circular hole matched with slip ring mouth, motor side dunnage (35) and motor mounting plate (34) are positioned at housing (1) rear end, motor side dunnage (35) is provided with the circular hole matched with centrifugal blower, it is characterized in that: also comprise the absorbent treatment (2) that porous material is made, inlet side shrouding (21), top board (31) and collateral fagging (32) internal surface are equipped with absorbent treatment (2), absorbent treatment is provided with dunnage outside (2), absorbent treatment (2) is fixed on housing (1) by dunnage.
2. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: described absorbent treatment (2) thickness is 20-60mm, the material unit weight of absorbent treatment (2) is 30-60kg/m
3.
3. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 2, is characterized in that: described absorbent treatment (2) adopts the polyester fibre acoustical cotton of fireproof environmental.
4. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: described dunnage is mesh dunnage (3), the rounded structure of mesh of mesh dunnage (3), rectangular configuration or polygon structure, mesh aperture is 5-20mm, and punching rate is 40%-70%.
5. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 4, it is characterized in that: mesh dunnage (3) material is stainless steel or aluminum alloy, mesh dunnage (3) is for monolithic construction or by split-type structural.
6. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: described dunnage is micropore dunnage, absorbent treatment (2) is supported by micropore dunnage and is fixed on housing (1).
7. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: top board (31) or collateral fagging (32) are provided with mounting hole, are connected with cooling unit mounting suspension or car body suspension bracket by vibration damper or bolt.
8. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: described housing (1) Placement comprises two kinds, mode one is inlet side shrouding (21), top board (31), collateral fagging (32), air side, bottom base plate (33), motor side dunnage (35) rivet by welding, riveted joint or welding the mode that combines and be interconnected; To be collateral fagging (32) with motor side dunnage (35) adopt mode two welds, rivets or weld and rivet the mode combined and form basic components, and inlet side shrouding (21) and top board (31) are bolted in basic components.
9. the box spiral case of electric rail car group cooling unit centrifugal blower noise reduction as claimed in claim 1, it is characterized in that: air side, bottom base plate (33) is provided with the grid type exhaust outlet of rectangle, grid hole is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491962.7U CN204082674U (en) | 2014-08-28 | 2014-08-28 | The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491962.7U CN204082674U (en) | 2014-08-28 | 2014-08-28 | The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082674U true CN204082674U (en) | 2015-01-07 |
Family
ID=52175397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420491962.7U Active CN204082674U (en) | 2014-08-28 | 2014-08-28 | The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370597A (en) * | 2015-12-10 | 2016-03-02 | 中车大连机车研究所有限公司 | Parallel and series hybrid type axial flow fan set for cooling unit of electric multiple unit |
| CN105443441A (en) * | 2014-08-28 | 2016-03-30 | 中国北车集团大连机车研究所有限公司 | Noise reduction box type volute of centrifugal fan for cooling unit of electric multiple unit |
-
2014
- 2014-08-28 CN CN201420491962.7U patent/CN204082674U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443441A (en) * | 2014-08-28 | 2016-03-30 | 中国北车集团大连机车研究所有限公司 | Noise reduction box type volute of centrifugal fan for cooling unit of electric multiple unit |
| CN105370597A (en) * | 2015-12-10 | 2016-03-02 | 中车大连机车研究所有限公司 | Parallel and series hybrid type axial flow fan set for cooling unit of electric multiple unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105443441A (en) | Noise reduction box type volute of centrifugal fan for cooling unit of electric multiple unit | |
| EP2299191A3 (en) | Indoor unit of air conditioner | |
| CN202452550U (en) | Range hood | |
| CN204082674U (en) | The box spiral case of electric rail car group cooling unit centrifugal blower noise reduction | |
| CN201953717U (en) | Cooling ventilator for traction motor of engineering maintenance vehicle | |
| CN202463824U (en) | Mechanical waste discharge device of railway vehicle | |
| CN207049036U (en) | A kind of motor-car tractive transformer anti-blown sand cooling fan | |
| CN205714984U (en) | The silencing means of boiler combustion head | |
| CN213684604U (en) | Air blower with built-in micro-perforated plate silencer | |
| CN202793813U (en) | Crosswind multiphase flow system for high speed train test | |
| CN208686625U (en) | A kind of cooling centrifugal blower of EMU traction motor | |
| CN202149071U (en) | Air-condition ventilation fan for air-conditioning bus | |
| CN101643013A (en) | Filter of high-efficiency vehicle-mounted ventilation system | |
| CN207466298U (en) | A kind of noiseless vehicular air purifier | |
| CN106151111A (en) | A kind of train low noise cooling blower | |
| CN201916253U (en) | Ventilation cabinet fan for electric locomotive | |
| CN105370597A (en) | Parallel and series hybrid type axial flow fan set for cooling unit of electric multiple unit | |
| CN202267107U (en) | Single-motor double-wind-wheel large-exhaust-air-rate kitchen ventilator | |
| CN208106571U (en) | A kind of diesel generating set mute type carriage body | |
| CN205532858U (en) | Generating set arrangement structure | |
| CN205260374U (en) | Cooling unit of electric rail car group organizes with compounding in series formula axial fan with parallelly connected | |
| CN216407227U (en) | Fan device for special vehicle and special vehicle | |
| CN110552906A (en) | Induced fan of subway | |
| CN218062722U (en) | Centrifugal fan with noise reduction structure | |
| CN202938482U (en) | Low-noise air conditioning cabinet shell body for passenger car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee after: CRRC DALIAN INSTITUTE CO., LTD. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Patentee before: CNR Dalian Locomotive Research Institute Co., Ltd. |