CN203420908U - Traction ventilator used for double-flow-system electric locomotive - Google Patents
Traction ventilator used for double-flow-system electric locomotive Download PDFInfo
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- CN203420908U CN203420908U CN201320471779.6U CN201320471779U CN203420908U CN 203420908 U CN203420908 U CN 203420908U CN 201320471779 U CN201320471779 U CN 201320471779U CN 203420908 U CN203420908 U CN 203420908U
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- impeller
- ventilator
- blade
- volute
- electric locomotive
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Abstract
The utility model relates to a traction ventilator used for a double-flow-system electric locomotive. The ventilator comprises an air inlet, an impeller, a volute and a motor. The technology that the multi-wing type impeller and the narrow impeller are arranged is adopted for the traction ventilator, the impeller is of a multi-wing type forward-bending arc blade impeller structure, blades are forward-bending arc blades, the volute is of a deep tongue structure, a blade outlet angle, gap between a volute tongue and the impeller, and gap between the air inlet and a front wheel disk are designed to be reasonable, an airflow field is further optimized, efficiency of the ventilator is improved, the width of the volute is smaller than the standard width, and good diffusion effect is achieved. The multi-wing type forward-bending arc blades are adopted for the impeller, and the impeller is fixed to a shaft of the motor through two spindle nose bolts with holes. Due to the fact that the multi-wing type impeller has the advantages of being low in noise, high in pressure coefficient and the like and the air inlet, the impeller and the volute are designed in an optimized mode, it is guaranteed that pressure, noise and efficiency of the ventilator reach the best state.
Description
Technical field
The utility model relates to a kind of dual current system electric locomotive traction ventilator, and to be that a kind of dual current system electric locomotive traction electric machine is cooling use centrifugal traction ventilator for it.
Background technique
According to the cooling requirement of dual current system electric locomotive traction electric machine, a ventilator needs cooling two traction electric machines, and ventilator intake grill, exhaust outlet are connected with transition air channel with locomotive shutter respectively, and required blast and air quantity are larger.Compressor flow is 3m
3/ s, static pressure is 3000Pa, Noisy acoustic power level≤108 dB (A), vibration velocity effective value≤4.5mm/s.The installing space of ventilator on locomotive is narrow and small, during design, ventilator profile length size should be within the scope of 1084 mm * 1022, mm * 749 mm, ventilator rotating speed is limited in below 1440r/min, presses traditional design method, and flow rate of fan, pressure and noise are difficult to meet above-mentioned requirements.
Summary of the invention
The purpose of this utility model is to overcome deficiency and the defect of prior art, provides a kind of performance good, easy for installation, and pressure coefficient is high, the dual current system electric locomotive traction ventilator of low noise.
The technical solution of the utility model: a kind of dual current system electric locomotive traction ventilator, comprise intake grill, spiral case, impeller and motor, it is characterized in that this described traction ventilator is centrifugal fan, impeller in traction ventilator is the antecurvature curved blade blade wheel structure of multiple-airfoil type, impeller is to be welded by front wheel disc, blade, rear trochal disc and core wheel, and this blade adopts antecurvature curved blade;
Described spiral case is to be formed by front side plate, top board, back side panel and exhaust outlet flange welding, and Casing width is less than normal width, has good diffusion function, and ventilator spiral case adopts dark tongue structure that blast is further improved.
Axial distance between the back side panel in described spiral case and the rear trochal disc of impeller is 22-28mm, optimum distance is 25mm, and the front wheel disc in impeller and the gap of intake grill are 2-4mm, and best clearance is 3mm, blade quantity in described impeller is 32, and impeller diameter is 700 mm.
[0006]described blower motor is selected three-phase alternating-current motor, and motor is selected Oiling bearing, and motor bed-plate length is less than 445 mm, and motor speed is 1440r/min.
The technological points of this traction ventilator is: this traction ventilator has adopted Multivane impeller to add narrow spiral case technology, in the situation that ventilator profile installation dimension is limited, ventilator has adopted the Multivane impeller structural design that pressure coefficient is high, noise is good, blade design is selected antecurvature curved blade, and blade outlet angle reasonable in design, snail tongue and impeller clearance and intake grill and front wheel disc gap, air velocity distribution is further optimized, improved fan efficiency, guaranteed that ventilator pressure and flow reach designing requirement, air-blower noise sound power level≤108 dB.Ventilator spiral case is formed by front side plate, back side panel, top board and exhaust outlet flange welding, and Casing width is narrow compared with normal width, has good diffusion effect.Impeller has been selected the antecurvature curved blade impeller of multiple-airfoil type, by front wheel disc, blade, core wheel, rear trochal disc, is welded, and impeller is bolted on motor shaft by 2 spindle noses with holes.Because the noise of Multivane impeller is low, pressure coefficient high, and intake grill, impeller and spiral case optimized design have guaranteed that ventilator pressure, noise and fan efficiency reach the optimum state.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-intake grill, 2-front side plate, 3-spiral case, 4-top board, 5-back side panel, wheel disc before 6-, 7-blade, 8-rear trochal disc, 9-impeller, 10-core wheel, 11-motor, 12-exhaust outlet flange.
Embodiment
Referring to Fig. 1, a kind of dual current system electric locomotive traction ventilator, comprise intake grill 1, spiral case 3, impeller 9 and motor 11, it is characterized in that this described traction ventilator is centrifugal fan, impeller 9 in traction ventilator is the antecurvature curved blade blade wheel structure of multiple-airfoil type, impeller 9 is to be welded by front wheel disc 6, blade 7, rear trochal disc 8 and core wheel 10, and this blade 7 adopts antecurvature curved blade; Wheel core material adopts cast steel, and blade material adopts High Strength Low Alloy Steel.
Described spiral case 3 is to be welded by front side plate 2, top board 4, back side panel 5 and exhaust outlet flange 12, and spiral case 3 width are less than normal width, has good diffusion function, and ventilator spiral case 3 adopts dark tongue structure that blast is further improved.
The axial distance that back side panel 5 in described spiral case 3 and the rear trochal disc of impeller 9 are 8 is 25mm, and the front wheel disc 6 in impeller 9 is 3mm with the gap of intake grill 1, and blade 7 quantity in described impeller 9 are 32.The diameter of impeller 9 is 700 mm.
Described motor 11 is selected three-phase alternating-current motor, and motor is selected Oiling bearing, and motor bed-plate length is less than 445 mm, and motor speed is 1440r/min.
This traction ventilator is because the noise of impeller 9 Multivane impellers is low, pressure coefficient high, intake grill 1, impeller 9, spiral case 3 optimized design have guaranteed most effective at declared working condition point of ventilator, pneumatic noise reaches floor level, and ventilator pressure is high.
Claims (2)
1. a dual current system electric locomotive traction ventilator, comprises intake grill (1), spiral case (3), impeller (9) and motor (11), it is characterized in that:
A, this described traction ventilator are centrifugal fan, impeller in traction ventilator (9) is the antecurvature curved blade blade wheel structure of multiple-airfoil type, impeller (9) is comprised of front wheel disc (6), blade (7), rear trochal disc (8) and core wheel (10), and this blade (7) adopts antecurvature curved blade;
B, described spiral case (3) are welded by front side plate (2), top board (4), back side panel (5) and exhaust outlet flange (12).
2. a kind of dual current system electric locomotive traction ventilator as claimed in claim 1, axial distance between the back side panel (5) in the spiral case (3) described in it is characterized in that and the rear trochal disc (8) of impeller (9) is 25mm, front wheel disc (6) in impeller (9) is 3mm with the gap of intake grill (1), blade (7) quantity in described impeller (9) is 32, and the diameter of impeller (9) is 700 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471779.6U CN203420908U (en) | 2013-08-05 | 2013-08-05 | Traction ventilator used for double-flow-system electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471779.6U CN203420908U (en) | 2013-08-05 | 2013-08-05 | Traction ventilator used for double-flow-system electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420908U true CN203420908U (en) | 2014-02-05 |
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ID=50020007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320471779.6U Expired - Lifetime CN203420908U (en) | 2013-08-05 | 2013-08-05 | Traction ventilator used for double-flow-system electric locomotive |
Country Status (1)
| Country | Link |
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| CN (1) | CN203420908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241502A (en) * | 2023-05-11 | 2023-06-09 | 佛山市南海九洲普惠风机有限公司 | High-flow high-efficiency multi-wing forward centrifugal fan |
-
2013
- 2013-08-05 CN CN201320471779.6U patent/CN203420908U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241502A (en) * | 2023-05-11 | 2023-06-09 | 佛山市南海九洲普惠风机有限公司 | High-flow high-efficiency multi-wing forward centrifugal fan |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |