CN203453126U - Double-volute centrifugal ventilator for heat dissipation of generator cooling system - Google Patents
Double-volute centrifugal ventilator for heat dissipation of generator cooling system Download PDFInfo
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- CN203453126U CN203453126U CN201320555955.4U CN201320555955U CN203453126U CN 203453126 U CN203453126 U CN 203453126U CN 201320555955 U CN201320555955 U CN 201320555955U CN 203453126 U CN203453126 U CN 203453126U
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Abstract
The utility model relates to a double-volute centrifugal ventilator for heat dissipation of a generator cooling system. The appearance structure of the ventilator is of a semi-ellipse structure, and the inside of the ventilator is of a structure composed of geometric spiral line type volutes and an asymptotic line opening. An impeller is formed in the mode that sixteen backward airfoil blades are evenly welded to a front wheel disc and rear wheel disc, the backward structure guarantees lower aerodynamic noise, and the airfoil structure has good aerodynamic performance and high efficiency; a flow collector is fixed to an outer side plate of one volute, and a filtering net is fixed to the flow collector; the flow collector and the filtering net are arranged in a separated mode so as to facilitate detachment and dust removal of the filtering net, and the process that the gap between an air inlet duct and the front wheel disc needs to be adjusted when the filtering net is detached is omitted. The asymptotic line structure adopted on the outlet of the inner volute is combined with a shunt cascade ingeniously, evenness of air flow at the outlet is guaranteed, pressure and efficiency of a ventilator are improved, noise is lowered, and a whole fan is in a relatively stable work state.
Description
Technical field
The utility model relates to a kind of generator cooling system heat transmission double volute formula centrifugal blower, and it is cooling that it is applicable to the ventilation of industrial high-rating generator cooling system, belongs to field of fluid machinery.
Background technique
Generator is a kind of capital equipment that is electric energy by other forms of energy conversion, in whole electric power generation system, plays an important role.For fully improving energy utilization rate and generating efficiency, generator can not time stop while rising, should be as much as possible in load carrying.In this process; generator is because of long-term, continuous working method, and its inner meeting produces a large amount of heats, if these heats can not get taking away in time and put aside in inside; will make generator temperature continue to raise, finally cause generator scaling loss and even machine halt trouble.When therefore, generator is worked, must have a set of complete heat radiation cooling system.This heat radiation cooling system can be divided into two-part, is respectively interior circulating cooling and outer circulation cooling.The heat that interior circulating cooling system produces generator takes air-air cooler to, and external circulation cooling system is transported to cooled external air air-air cooler, in air-air cooler, complete heat exchange after again discharged to atmosphere.Outer circulation cooling fan is the equipment of driving force that provides for the conveying of external circulating system air.The cooling-air of being carried by cooling fan has been taken away a large amount of heats after by cooler, has maintained the normal working temperature of motor internal, thereby has guaranteed the efficient operation that continues of generator.
Summary of the invention
The purpose of this utility model is to overcome prior art difficult point and spatial constraints, and the generator cooling system heat transmission double volute formula centrifugal blower of a kind of high efficiency, large flow, low noise is provided.
The technical solution of the utility model: a kind of generator cooling system heat transmission double volute formula centrifugal blower, comprise impeller, spiral case, shunting leaf grating, slip ring and filter screen, it is characterized in that: this described double volute formula centrifugal blower is provided with two spiral cases, i.e. inner spiral casing and outer spiral casing;
Described inner spiral casing is divided into two-part, and the one, how much spiral line type structures of water conservancy diversion and diffusion
Part, the 2nd, the asymptotic line style structure division of geometry of shunting and diffusion, the two structure organically combines and has formed good blower fan inner flow passage; Make blower fan internal flow situation obtain very large improvement, fan outlet pressure is also significantly improved; And organic division of labor and the combination of the two function, in order to realize, cooling fan is efficient, the object of low noise provides certain guarantee.
Described outer spiral casing is half elliptic structure, this outer spiral casing is connected in motor side by construction bolt on side inner panel, outer spiral casing is combined into one in flow outlet side and inner spiral casing, thereby has formed the flow passage structure that plays water conservancy diversion and diffusion action for the air-flow of whole ventilator outlet;
Described impeller is comprised of rear trochal disc, wheel hub, blade and front wheel disc, wherein, it is counterclockwise that sense of rotation is faced filter screen, the backward wing blade blade that the blade in impeller is high-efficient low-noise, and can under the requirement that meets aeroperformance, effectively reduce wind is noise.Blade quantity in impeller is 16, and the mode that whole impeller connects by keyway is fixed on motor-shaft extending end;
Described shunting leaf grating is divided into two, i.e. front leaf grating and rear leaf grating, and this shunting leaf grating is arranged between Yu Woshe outlet port, spiral case outlet port; The radius R 1 of front leaf grating and the radius R 2 of rear leaf grating are determined by the outlet streamline of numerical simulation gained, are consistent with streamline, and the flow resistance while making fluid flow through leaf grating is low as far as possible; Position relationship D1, the D2 of leaf grating and D3 are according to the principle of dividing equally air-flow, and determine in conjunction with simulating the grain direction obtaining; Just, based on this, make leaf grating in the situation that of the less pressure loss, realize the effect of dividing equally air-flow.
Described slip ring is cone arcuate structure, and this slip ring is secured by bolts on outer spiral casing outer panel; Slip ring adopts the slip ring of cone arcuate structure, has reduced to greatest extent the vortex of suction port, has reduced the loss in flow process, to also having played certain containment effect because of movement disorder and uneven formed aerodynamic noise.
Described filter screen is integrated impact briquetting Mild Steel Expanded Sheets, and size of mesh is 10 * 10 mm, mesh spacing 3 mm; The mode that this filter screen is bolted is fixed on slip ring.Filter screen is impact briquetting Mild Steel Expanded Sheets, makes simply, and flat appearance, attractive in appearance, can play a role in filtering to the most foreign material that enter blower fan with air-flow in running environment, has guaranteed safe, the effectively operation of blower fan., the mounting hole of filter screen and slip ring is not united two into one meanwhile, but be separately positioned on different positions, be convenient to clean and dismounting.
This described ventilator is fixed on motor side by six welded nuts on outer spiral casing side inner panel, and impeller and wheel hub link together by the form of interior full weld, outer section of weldering, and the mode connecting with keyway is fixed on motor-shaft extending end.
This ventilator spiral case is comprised of inside and outside two-part, compares with single worm frame of traditional centrifugal blower, and be a kind of improvement and bring new ideas.Outer spiral casing is " half elliptic " spiral case, combines on the one hand the mounting structure requirement of ventilator, on the other hand also for exit gas provides runner; Inner spiral casing design one is to take into account efficiency, the 2nd, consider noise reduction, and how much spiral line type spiral cases efficient by having, low noise form; Being used in combination of inside and outside spiral case, blower fan can be moved according to given installation form, meet the cooling demand of generator, a good flow passage structure can be provided again, the flow losses of blower fan are significantly reduced, efficiency can be further enhanced, and noise also can be reduced accordingly simultaneously.
Due to the external air-air cooler of fan outlet end, the air that enters cooler is roughly uniformly distributed, guarantee the demand of balance heat radiation, spiral case outlet trace has been abandoned the bias type design of general centrifugal blower, and how much progressive Alignment Designs of employing, the basis source of design is in the streamline chart of exit flow, outlet trace and streamline trend are infinitely progressive, the more general centrifugal blower of spiral case outlet after improving is larger, met on the one hand the interface requirement with cooler, the design of asymptotic line style can make flow process disturbance minimum on the other hand, dynamic pressure loss is reduced more, static pressure efficiency is higher.
The asymptotic line style trace design that inner spiral casing outlet port adopts and the ingenious combination of shunting leaf grating, not only make the uniformity of exit flow be guaranteed, and also makes the pressure of ventilator and efficiency obtain further raising simultaneously, and noise has obtained effective reduction.
This fan impeller adopts backward wing blade blade, and wherein backward structure has guaranteed lower aerodynamic noise, and wing blade structure has good aeroperformance and higher efficiency.16 of impeller blade numbers, are uniformly distributed in circumference of impeller, external diameter 550mm, and internal diameter 390mm, 39.4 ° of blade outlet angles, blade center circular arc radius R 216mm, vane rotary direction is for being counter clockwise direction in the face of slip ring entrance, working method is quenching.
This double volute formula centrifugal blower is applied to high-rating generator heat radiation cooling system.At present, high-rating generator heat radiation cooling system is except requiring to reach the heat dissipation potential of regulation, and also to another one principal element, noise, has also proposed to explicitly call for.Cooling fan, as one of core component of this cooling system, is also being born the task of noise reduction.Thereby cooling fan is except meeting the job requirement of generator because of the long-term needs of operation continuously cooling, also needs noise to carry out certain control, also must meet the installation requirement of generator simultaneously on mounting structure.The successful Application of this cooling fan in generator cooling system is the once innovation of centrifugal blower in the heat radiation of industry equipment cooling system.This ventilator is the centrifugal blower of a kind of efficient, large flow, low noise.
This ventilator is a kind of generator phase with vertical installation that is applicable to, and has large flow, greater efficiency and more low noise centrifugal blower.Ventilator overall structure is moderate, and in conjunction with the requirement of mounting structure, form structure is half elliptic structure, and inside is that how much spiral line type spiral cases add asymptotic line style export structure.Impeller by 16 backward wing blade blade uniform weldings on forward and backward wheel disc, slip ring is fixed on spiral case outer panel by welded nut, filter screen is fixed on slip ring by welded nut, slip ring and filter screen adopt the form being installed separately, facilitate dismounting and the dedusting of filter screen, also saved the process that need to adjust air inlet duct and front wheel disc gap because of dismounting filter screen.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional structure schematic diagram of the present utility model;
In figure: 1-impeller, 2-inner spiral casing, 3-shunts leaf grating, 4-welded nut, 5-outer spiral casing, wheel disc before 6-, 7--slip ring, 8-filter screen, 9-blade, 10-wheel hub, 11-rear trochal disc.
Embodiment:
With reference to above-mentioned accompanying drawing, a kind of generator cooling system heat transmission double volute formula centrifugal blower, comprise impeller 1, spiral case, shunting leaf grating 3, slip ring 7 and filter screen 8, it is characterized in that: this described double volute formula centrifugal blower is provided with two spiral cases, be i.e. interior snail 2 and outer spiral casing 5;
Described inner spiral casing 2 is divided into two-part, and the one, how much helixes of water conservancy diversion and diffusion
Type structure division, the 2nd, the asymptotic line style structure division of geometry of shunting and diffusion, the two structure organically combines and has formed good blower fan inner flow passage structure, makes blower fan internal flow situation obtain very large improvement, and fan outlet pressure is also significantly improved; And organic division of labor and the combination of the two function, in order to realize, cooling fan is efficient, the object of low noise provides certain guarantee.
Described outer spiral casing 5 is half elliptic structure, according to this ventilator installation dimension, requires to determine, and this outer spiral casing 5 is connected in motor side by construction bolt on side inner panel, and whole blower fan is played to fixation; Outer spiral casing 5 is combined into one in flow outlet side and inner spiral casing 2, thereby has formed the flow passage structure for whole ventilator outlet, for the air-flow exporting plays water conservancy diversion and diffusion action.
Described impeller 1 is comprised of rear trochal disc 11, wheel hub 10, blade 9 and front wheel disc 6, wherein, it is that counterclockwise the backward wing blade blade that the blade 9 in impeller 1 is high-efficient low-noise can effectively reduce aerodynamic noise under the requirement that meets aeroperformance that sense of rotation is faced filter screen 8.Blade 9 quantity in impeller are 16, and the mode that whole impeller connects by keyway is fixed on motor-shaft extending end;
Described shunting leaf grating 3 is divided into two, i.e. front leaf grating and rear leaf grating, and this shunting leaf grating 3 is arranged between Yu Woshe outlet port, spiral case outlet port; The radius R 1 of front leaf grating and the radius R 2 of rear leaf grating are determined by the outlet streamline of numerical simulation gained, be consistent with streamline, flow resistance while making fluid flow through leaf grating is low as far as possible, position relationship D1, the D2 of leaf grating and D3 are according to the principle of dividing equally air-flow, and determine in conjunction with simulating the grain direction obtaining; Just, based on this, make leaf grating in the situation that of the less pressure loss, realize the effect of dividing equally air-flow.
Described slip ring 7, for cone arcuate structure, adopts this kind of structure to reduce to greatest extent the vortex of suction port, has reduced the loss in flow process, to also having played certain containment effect because of movement disorder and uneven formed aerodynamic noise.This slip ring 7 is secured by bolts on outer spiral casing 5 outer panels;
Described filter screen 8 is integrated impact briquetting Mild Steel Expanded Sheets, and size of mesh is 10 * 10mm, mesh spacing 3 mm; The mode that this filter screen 8 is bolted is fixed on slip ring 7.Filter screen 8 is impact briquetting Mild Steel Expanded Sheets, makes simply, and flat appearance, attractive in appearance, can play a role in filtering to the most foreign material that enter blower fan with air-flow in running environment, has guaranteed safe, the effectively operation of blower fan., the mounting hole of filter screen and slip ring is not united two into one meanwhile, but be separately positioned on different positions, be convenient to clean and dismounting.
This described ventilator is fixed on motor side by six welded nuts 4 on outer spiral casing 5 side inner panels, and impeller 1 links together with the form of wheel hub 10 by interior full weld, outer section of weldering, and the mode connecting with keyway is fixed on motor-shaft extending end.Slip ring 7 is fixed on outer spiral casing outer panel in bolted mode, and filter screen 8 is adopted and is connected in the same way on slip ring 7.
During the work of this double volute formula centrifugal blower, under the turning effort of impeller, cooling-air enters blower fan inside by filter screen through slip ring, in experience, flows to after change and adherence pressure, enter cooler inside, complete after heat exchange by cooler outlet discharged to atmosphere.In whole design process, by the calculating side that combines with numerical simulation of theoretical calculating
Method, be no matter to internal factor as impeller parameters, or external structure, has all carried out optimized design as slip ring and spiral case inner flow passage and exit portion, makes the resistance of whole flow process obtain significantly reducing, efficiency is significantly improved.By installation united test, ventilator is when 1490r/min rotating speed moves, and fan outlet place static pressure reaches 470Pa, and flow reaches 3.88m
/ s, total pressure efficiency reaches more than 70%, and noise is controlled in 78dB (A), and blower fan property indices has all reached re-set target, has met well the cooling requirement of industrial generator cooling heat radiation system.
Claims (2)
1. a generator cooling system heat transmission double volute formula centrifugal blower, comprises impeller (1), spiral case, shunting leaf grating (3), slip ring (7) and filter screen (8), it is characterized in that:
A, this described double volute formula centrifugal blower are provided with two spiral cases, i.e. inner spiral casing (2) and outer spiral casing (5); Described inner spiral casing (2) is divided into two-part, and the one, how much spiral line type structure divisions of water conservancy diversion and diffusion, the 2nd, the asymptotic line style structure division of geometry of shunting and diffusion, the two structure organically combines and has formed good blower fan inner flow passage; Described outer spiral casing (5) is half elliptic structure, this outer spiral casing (5) is connected in motor side by construction bolt on side inner panel, outer spiral casing (5) is combined into one in flow outlet side and inner spiral casing (2), thereby has formed the flow passage structure that plays water conservancy diversion and diffusion action for the air-flow of whole ventilator outlet;
B, described impeller (1) are comprised of rear trochal disc (11), wheel hub (10), blade (9) and front wheel disc (6), wherein, it is counterclockwise that sense of rotation is faced filter screen (8), the backward wing blade blade that blade (9) in impeller (1) is high-efficient low-noise, blade in impeller (9) quantity is 16, and the mode that whole impeller connects by keyway is fixed on motor-shaft extending end;
C, described shunting leaf grating are divided into two, i.e. front leaf grating and rear leaf grating, and this shunting leaf grating is arranged between Yu Woshe outlet port, spiral case outlet port; The radius R 1 of front leaf grating and the radius R 2 of rear leaf grating are determined by the outlet streamline of numerical simulation gained, are consistent with streamline, and position relationship D1, the D2 of leaf grating and D3 are according to the principle of dividing equally air-flow, and determine in conjunction with simulating the grain direction obtaining;
D, described slip ring (7) are cone arcuate structure, and this slip ring (7) is secured by bolts on outer spiral casing (5) outer panel; Described filter screen (8) is integrated impact briquetting Mild Steel Expanded Sheets, and size of mesh is 10 * 10 mm, mesh spacing 3 mm; The mode that this filter screen (8) is bolted is fixed on slip ring (7).
2. a kind of generator cooling system heat transmission double volute formula centrifugal blower as claimed in claim 1, it is characterized in that this described ventilator is fixed on motor side by six welded nuts (4) on outer spiral casing (5) side inner panel, impeller (1) links together with the form of wheel hub (10) by interior full weld, outer section of weldering, and the mode connecting with keyway is fixed on motor-shaft extending end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320555955.4U CN203453126U (en) | 2013-09-09 | 2013-09-09 | Double-volute centrifugal ventilator for heat dissipation of generator cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320555955.4U CN203453126U (en) | 2013-09-09 | 2013-09-09 | Double-volute centrifugal ventilator for heat dissipation of generator cooling system |
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| CN203453126U true CN203453126U (en) | 2014-02-26 |
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| CN201320555955.4U Expired - Lifetime CN203453126U (en) | 2013-09-09 | 2013-09-09 | Double-volute centrifugal ventilator for heat dissipation of generator cooling system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105214403A (en) * | 2015-11-12 | 2016-01-06 | 深圳创新设计研究院有限公司 | Multi-air outlet air purifier |
| CN105351218A (en) * | 2015-12-24 | 2016-02-24 | 清华大学 | Centrifugal compressor provided with adjustable double-outlet volute |
| CN105697394A (en) * | 2016-03-07 | 2016-06-22 | 南京菲瑞克机电科技有限公司 | Micro-miniature efficient outlet flow field distortionless centrifugal fan |
| CN106337824A (en) * | 2016-09-28 | 2017-01-18 | 浙江亿利达风机股份有限公司 | Novel volute centrifugal fan provided with permanent-magnet brushless motor system |
| CN107525007A (en) * | 2017-10-24 | 2017-12-29 | 李海峰 | A kind of headlight for vehicles assembly and its heat abstractor |
| CN109519416A (en) * | 2017-09-19 | 2019-03-26 | 宁波方太厨具有限公司 | A kind of centrifugal blower |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
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- 2013-09-09 CN CN201320555955.4U patent/CN203453126U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214403A (en) * | 2015-11-12 | 2016-01-06 | 深圳创新设计研究院有限公司 | Multi-air outlet air purifier |
| CN105351218A (en) * | 2015-12-24 | 2016-02-24 | 清华大学 | Centrifugal compressor provided with adjustable double-outlet volute |
| CN105697394A (en) * | 2016-03-07 | 2016-06-22 | 南京菲瑞克机电科技有限公司 | Micro-miniature efficient outlet flow field distortionless centrifugal fan |
| CN105697394B (en) * | 2016-03-07 | 2018-01-30 | 南京菲瑞克机电科技有限公司 | The efficient exit flow field of microminiature is undistorted centrifugal blower |
| CN106337824A (en) * | 2016-09-28 | 2017-01-18 | 浙江亿利达风机股份有限公司 | Novel volute centrifugal fan provided with permanent-magnet brushless motor system |
| CN106337824B (en) * | 2016-09-28 | 2018-10-23 | 浙江亿利达风机股份有限公司 | A kind of volute casing centrifugal blower fan of novel belt permanent magnetic brushless system |
| CN109519416A (en) * | 2017-09-19 | 2019-03-26 | 宁波方太厨具有限公司 | A kind of centrifugal blower |
| CN109519416B (en) * | 2017-09-19 | 2024-01-16 | 宁波方太厨具有限公司 | Centrifugal fan |
| CN107525007A (en) * | 2017-10-24 | 2017-12-29 | 李海峰 | A kind of headlight for vehicles assembly and its heat abstractor |
| CN110145495A (en) * | 2019-06-11 | 2019-08-20 | 佛山市晟昊通风机有限公司 | A kind of structure of efficient centrifugal air inlet |
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Granted publication date: 20140226 |