CN203161662U - Axial flow ventilator for water cooling device of main converter of motor train unit - Google Patents
Axial flow ventilator for water cooling device of main converter of motor train unit Download PDFInfo
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- CN203161662U CN203161662U CN 201320185741 CN201320185741U CN203161662U CN 203161662 U CN203161662 U CN 203161662U CN 201320185741 CN201320185741 CN 201320185741 CN 201320185741 U CN201320185741 U CN 201320185741U CN 203161662 U CN203161662 U CN 203161662U
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Abstract
The utility model relates to an axial flow ventilator for a water cooling device of a main converter of a motor train unit. The axial flow ventilator comprises an air barrel component, an impeller component, a motor and a binding box device. Blades on the circumferential section of an impeller are arranged in unequal distance, that is, included angles among the blades are non-uniformly distributed and are irregular according to noise reduction. By the aid of wing-type blades, efficiency can be effectively improved, noise can be greatly reduced in practice due to wrapping and stopping function of other devices during practical train loading, and requirement of comfortability of passengers of the motor train unit can be met. The axial flow ventilator is compact in integral structure, body material thereof is high-strength aluminum and magnesium alloy, and total weight is reduced on the premise of guaranteeing strength and rigidity. Since the blades on the circumferential section are arranged in unequal distance, the impeller and number of the blades of the axial flow ventilator are prime numbers for each other, accumulation of base noise frequency can be reduced, rotating noise is dispersed, and noise is lower than that of other like products.
Description
Technical field
The utility model is related to a kind of EMUs main convertor water cooling plant propeller fan, and it is a kind of cooling propeller fan, belongs to field of fluid machinery.
Background technology
Main convertor water cooling plant is the critical component for maintaining EMUs power part main convertor normal work.The normal work of EMUs main convertor, can become railway power network current the power supply turned to used by traction electric machine；In main convertor, substantial amounts of heat can be generated during all kinds of electronic component work, water cooling plant radiates exclusively for it, at this moment need one Special ventilator of design to carry out cooling to radiator.When ventilation blower works, flowing air quantity takes away the heat of radiator, prevents that electronic component from should overheat and damaging, it is ensured that the normal work of main convertor, is essential part in EMUs main transformer streaming system.
In view of the requirement of EMUs high-speed cruising and comfort of passenger, and the mechanical cabin that the axial flow blower is installed is in the bottom of passenger carriage.To ensure comfort level of the passenger in riding process, its part need to meet the requirement that noise is low, vibration is small, so the ventilation blower need to reduce aerodynamic noise and complete machine oscillation as far as possible.In addition, mechanical cabin installing space is limited, it is necessary to which the limited requirement of installing space could be met by making the compact conformation of ventilation blower.
The content of the invention
The purpose of this utility model is to provide a kind of compact overall structure, and the blade on low noise, small vibration, performance stabilization and impeller is the EMUs main convertor ventilator for cooling system of " Unequal distance " layout structure.
The technical solution of the utility model：A kind of EMUs main convertor water cooling plant propeller fan, bag
Include air duct component, spindle nose stop device, motor, support bar, cable protecting device, Junction box assembly and impeller assembly, it is characterised in that described air duct component is to include mounting rail, grounding nut, outer barrel, inner cylinder, stator and motor mounting plate；
Described stator is tilting structure, and the stator is welded between outer barrel and inner cylinder；Stator plays water conservancy diversion, pressurization in flow passage structure, while supporting motor together with support bar, and mounting rail, which is lifted on water cooling plant support, to be used for fixing whole machine, whole length 550mm；Reinforcement is welded on inner cylinder and motor is installed in version.
Described impeller assembly is to include blade, wheel body and wheel hub；Blade on the impeller assembly is that the angle between Unequal distance layout structure, i.e., each blade is non-distribution equalizing structure, and the blade uses standard flat bottom wing blades；Designed to meet the angle between the requirement of ventilation blower low noise, blade for Unequal distance.
The centre distance between the blade on stator and impeller assembly in described air duct component is 66.4mm, is optimal noise reduction distance；Also can between 65~67.5 value；
Stator quantity in described air duct component is 17 pieces, and the radian of stator is R216.2mm；Blade quantity in described impeller assembly is 12, and the setting angle in each section of blade changes to 39.2 ° by 26.8 ° of distortions, and blade is laid out for Unequal distance, and the angle between each blade is non-homogeneous layout in the range of 27.5 °~32.5 °.Each angle see the table below：
Technical characterstic of the present utility model：The characteristics of to meet the low noise required by system, the main Pneumatic component impeller assembly of axial flow blower is designed as " Unequal distance " layout blade, this structure its fundamental frequency of noise produced when can make impeller operation and its harmonic wave all have modulating action, i.e. for any one noise harmonic wave of blower fan, there is significant peak value like that different from equidistant blade blower fan, but by energy dissipation into broader frequency band.In addition, fundamental frequency height is made an uproar, peak value is scattered, makes sound spectrum without sharp change, is more suitable for human auditory.Meanwhile, using air deflector blade after inclination（Rear guide vane）Method reduces axial fan rotational noise, and this method had both been increased without the size of blower fan, and will not also reduce the efficiency of blower fan, under all operating modes of blower fan, is all up reducing the effect of noise.
The utility model compact overall structure, lightweight, noise are low, vibration is small.Circumference of impeller face section blades are laid out using " Unequal distance ", i.e., the angle between blade is non-distribution equalizing structure, but use irregular angle by reduction noise.Air duct component is welded by outer barrel, stator, inner cylinder, motor mounting plate, mounting rail and grounding nut.Impeller is made up of blade, wheel body and wheel hub, and the blade is distorted using blower fan standard airfoil type, radially each section aerofoil profile setting angle by the pressure distribution of air-flow；Pressure is evenly distributed in wet runner, reduces irregular loss, can effectively lift the pressure value of unit sizes；Impeller employs larger hub ratio structure, and wing blades can effectively improve efficiency, with reference to rational established angle and section twist angle so that when effective static pressure of blower fan reaches 850Pa, flow reaches 7200m3/h.Motor front end cover is fixed by bolts on mounting flange, and rear end cap is connected by support bar with air duct, improves integral rigidity, reduces fan vibration, complete machine oscillation speed control is within 3.5mm/s.Blower fan is in declared working condition point, and experiment measurement fan noise value is not higher than 88dB (A), when actual entrucking works, by the parcel barrier effect that other devices rise, actual noise can be greatly reduced, and can meet the comfort level requirement of EMUs passenger.
Brief description of the drawings
Fig. 1 is the two-dimensional structure schematic diagram of utility model；
Fig. 2 is axial fan impeller structural representation；
Fig. 3 is blade profile schematic diagram；
In figure：1- air duct components, 2- spindle nose stop devices, 3- mounting rails, 4- motor, 5- grounding nuts, 6- support bars; 7- cable protecting devices, 8- Junction box assemblies, 9- outer barrels, 10- inner cylinders, 11- stators, 12- reinforcements; 13- motor mounting plates, 14- impeller assemblies, 15- blades, 16- wheel bodys, 17- wheel hubs.
Embodiment
With reference to above-mentioned accompanying drawing, a kind of EMUs main convertor water cooling plant propeller fan, including air duct component
1st, spindle nose stop device 2, motor 4, support bar 6, cable protecting device 7, Junction box assembly 8 and impeller assembly 14, it is characterised in that described air duct component 1 is to include mounting rail 3, grounding nut 5, outer barrel 9, inner cylinder 10, stator 11 and motor mounting plate 13；
Described stator 11 is tilting structure, and the stator 11 is welded between outer barrel 9 and inner cylinder 10；Stator plays water conservancy diversion, pressurization in flow passage structure, while supporting motor 4 together with support bar, and mounting rail 3, which is lifted on water cooling plant support, to be used for fixing whole machine, whole length 550mm；Reinforcement 12 is welded on inner cylinder 10 and motor is installed in version 13, and it acts on the rigidity that enhancing motor installs version, prevents from installing the deformation after motor and impeller.
Described impeller assembly 14 is to include blade 15, wheel body 16 and wheel hub 17；Blade 15 on the impeller assembly 14 is that the angle between Unequal distance layout structure, i.e., each blade 15 is non-distribution equalizing structure, and the blade 15 uses standard flat bottom wing blades；Designed to meet the angle between the requirement of ventilation blower low noise, blade for Unequal distance.
The centre distance between the blade 15 on stator 11 and impeller assembly 14 in described air duct component is 66.4mm, is optimal noise reduction distance, also can between 65~67.5 value；
The quantity of stator 11 in described air duct component is 17 pieces, and the radian of stator 11 is R216.2mm；The quantity of blade 15 in described impeller assembly 14 is 12, the setting angle in each section of blade 15
39.2 ° are changed to by 26.8 ° of distortions, blade is laid out for Unequal distance, the angle between each blade 15 is 27.5 °~32.5 ° non-homogeneous layouts.Each angle see the table below shown：
The utility model compact overall structure, it is adaptable to ventilator pressure and traffic requirement are reached in the confined space；Material of main part is high-strength aluminium-magnesium alloy, while proof strength and rigidity requirement, significantly reduces overall weight.Main feature is its Low Noise Design, concrete measure：Impeller is made up of 12 blades, circumference of impeller face section blades are laid out using Unequal distance, i.e., the angle between blade is non-distribution equalizing structure, but use irregular angle by reduction noise, it is effective fundamental frequency noise superposition reduced when impeller is run that it, which is acted on, so as to reduce noise figure；In addition, designing axial flow fan vane wheel and stator quantity prime number each other, it is possible to reduce the superposition of noise fundamental frequency, disperse rotational noise；Noise is set to reach similar relatively low level.
Claims (2)
1. a kind of EMUs main convertor water cooling plant propeller fan, including air duct component（1）, spindle nose stop device（2）, motor（4）, support bar（6）, cable protecting device（7）, Junction box assembly（8）And impeller assembly（14）, it is characterised in that：
A, described air duct component（1）It is to include mounting rail（3）, grounding nut（5）, outer barrel（9）, inner cylinder（10）, stator（11）, reinforcement（12）And motor mounting plate（13）；
Described stator（11）For tilting structure, the stator（11）It is welded on outer barrel（9）With inner cylinder（10）Between；Stator plays water conservancy diversion, pressurization in flow passage structure, while supporting motor together with support bar（4）, mounting rail（3）It is lifted on water cooling plant support and is used for fixing whole machine, whole length 550mm；Reinforcement（12）It is welded on inner cylinder（10）Version is installed with motor（13）On,
B, described impeller assembly（14）It is to include blade（15）, wheel body（16）And wheel hub（17）；The impeller assembly（14）On blade（15）For Unequal distance layout structure, i.e., each blade（15）Between angle be non-distribution equalizing structure, the blade（15）Using standard flat bottom wing blades.
2. a kind of EMUs main convertor water cooling plant propeller fan as claimed in claim 1, it is characterised in that the stator in described air duct component（11）With impeller assembly（14）On blade（15）Between centre distance be 65~67.5mm, optimal noise reduction distance is 66.4mm, is optimal noise reduction distance, can between 65~67.5 value；
Described air duct component（1）In stator（11）Quantity is 17 pieces, stator（11）Radian be R216.2mm；Described impeller assembly（14）In blade（15）Quantity is 12, blade（15）The setting angle in each section changes to 39.2 ° by 26.8 ° of distortions, and blade is laid out for Unequal distance, each blade（15）Between angle be 27.5 °~32.5 ° non-homogeneous layouts of scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185741 CN203161662U (en) | 2013-04-15 | 2013-04-15 | Axial flow ventilator for water cooling device of main converter of motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320185741 CN203161662U (en) | 2013-04-15 | 2013-04-15 | Axial flow ventilator for water cooling device of main converter of motor train unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161662U true CN203161662U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320185741 Expired - Fee Related CN203161662U (en) | 2013-04-15 | 2013-04-15 | Axial flow ventilator for water cooling device of main converter of motor train unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062132A1 (en) * | 2014-10-24 | 2016-04-28 | 常州格力博有限公司 | Axial flow blower fan blade |
-
2013
- 2013-04-15 CN CN 201320185741 patent/CN203161662U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062132A1 (en) * | 2014-10-24 | 2016-04-28 | 常州格力博有限公司 | Axial flow blower fan blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20210415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |