CN206816554U - A kind of transformer cooling device - Google Patents
A kind of transformer cooling device Download PDFInfo
- Publication number
- CN206816554U CN206816554U CN201720681095.7U CN201720681095U CN206816554U CN 206816554 U CN206816554 U CN 206816554U CN 201720681095 U CN201720681095 U CN 201720681095U CN 206816554 U CN206816554 U CN 206816554U
- Authority
- CN
- China
- Prior art keywords
- blade
- segmental arc
- edge
- trailing edge
- close
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of transformer cooling device of field of electrical equipment is the utility model is related to, it includes motor, shaft coupling, rotary shaft and tube-axial fan impeller.The impeller includes wheel hub and multiple blades；Motor is connected by its motor shaft by shaft coupling with rotary shaft, and rotary shaft is fixedly connected with the wheel hub of impeller；Blade includes leading edge, trailing edge, outer rim and inner edge.Each blade is fixedly connected on wheel hub by fastener, and the inner edge of each blade is in contact connection with the neighboring position of wheel hub.Blade has maximum gauge t and maximal bending moment c, and blade gradually broadens from radially inner side to radial outside width.It is structurally characterized in that：From the radially inner side of blade to radial outside, maximum gauge t and maximal bending moment c position are change in circumferential direction.The shape of the blade of impeller of the present utility model is relatively reasonable, enables to the efficiency of transformer axial-flow type cooling fan higher.
Description
Technical field
It the utility model is related to field of electrical equipment, more particularly to a kind of transformer cooling device.
Background technology
It is renewable, pollution-free, operating cost is low, is convenient for electricity with the rapid development of economy, society is to clean energy resource
The new energy demand of power peak regulation etc. is increasing.Transformer is widely used in local lighting, skyscraper, airport, harbour CNC machines
The places such as tool equipment.The safe operation of transformer and service life, it is heavily dependent on the safety of Transformer Winding insulation
Reliably.Winding temperature exceed insulation tolerable temperature make insulation breakdown, be the main reason for causing transformer cisco unity malfunction it
One.Therefore the cooling to transformer is particularly significant.Cooling Methods of Transformers is divided into natural air cooling（AN）With force air cold
But（AF）Two kinds.During natural air cooling, transformer can the long-term continuous operation under rated capacity.During forced air cooling, transformer output
Capacity can improve 50%.The shape that existing transformer axial-flow type cooling fan impeller remains blade designs unreasonable, effect
The problem of rate is relatively low, still there is the space for further improving efficiency.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of higher transformation of cooling effectiveness
Device cooling device, total technical concept are to be improved by the improvement of the blade shape to impeller therein with improving cooling effectiveness
Transformer performance.
Realizing the technical scheme of the utility model purpose is：Transformer cooling device of the present utility model, including motor, connection
Axle device, rotary shaft and tube-axial fan impeller（Tube-axial fan impeller is referred to as impeller below）.The impeller includes wheel hub
With multiple blades.Motor is connected by its motor shaft by shaft coupling with rotary shaft, and rotary shaft is fixedly connected with the wheel hub of impeller.Leaf
Piece includes leading edge, trailing edge, outer rim and inner edge.Each blade is fixedly connected on wheel hub by fastener, and each blade is interior
Edge is in contact with the neighboring of wheel hub.Blade has a maximum gauge t and maximal bending moment c, and blade is outside from radially inner side to footpath
Side width gradually broadens.It is structurally characterized in that：From the radially inner side of blade to radial outside, maximum gauge t and maximal bending moment c's
Position is change in circumferential direction；Wherein maximum gauge change in location curve Vt is outside from the radially inner side of blade to footpath
Side, the curve first approach from after the starting point starting at middle position to the rear to the trailing edge of blade, and then forward edge approaches,
Finally approached to trailing edge；Maximal bending moment change in location curve Vc from the radially inner side of blade to radial outside, the curve from positioned at
After the starting point starting of middle part, first approached to the leading edge of blade, backward trailing edge approaches, and then forward edge approaches, also finally
Forward edge approaches.
Further, the leading edge of blade is made up of three sections of camber lines in radial directions, and they are being sequentially connected for leading edge
First segmental arc R1, the second segmental arc R2 and the 3rd segmental arc R3.The trailing edge of blade is in radial directions also by three sections of camber line structures
Into they are the first segmental arc R4 being sequentially connected, the second segmental arc R5 and the 3rd segmental arc R6 of trailing edge.The trailing edge of blade
First segmental arc R4 is corresponding with the first segmental arc R1 of the leading edge of blade, and by the first segmental arc R4 positioned at trailing edge of blade
Part between the first segmental arc R1 of leading edge is referred to as the first arcuate segments of blade.Second segmental arc R5 of the trailing edge of blade with
Second segmental arc R2 of the leading edge of blade is corresponding, and by blade positioned at the second segmental arc R5 of trailing edge and the second arc of leading edge
Part between shape section R2 is referred to as the second arcuate segments of blade；3rd segmental arc R6 of the trailing edge of blade and the 3rd arc of leading edge
Section R3 is corresponding, and the part between the 3rd segmental arc R6 of trailing edge and the 3rd segmental arc R3 of leading edge of blade is referred to as
3rd arcuate segments of blade.
In the first arcuate segments, from radially inner side to radial outside, maximum gauge t position is after middle starting to the rear, first
Approached to trailing edge, rear forward edge approaches；After maximal bending moment c position originates from centre, first forward edge approaches, and backward trailing edge connects
Closely.In the second arcuate segments, from radially inner side to radial outside, maximum gauge t position is continued forward edge and approached, maximal bending moment c
Position changed course leading edge approach；In the 3rd arcuate segments, from radially inner side to radial outside, maximum gauge t position changed course trailing edge
Close, maximal bending moment c position is continued forward edge and approached.
Further, the opening direction of the 3rd segmental arc R3 of the leading edge of blade bending is towards rear, namely towards rear
The direction of edge, the opening direction of the 3rd segmental arc R6 of the trailing edge of blade bending is also towards rear.
Further, the outer rim of blade is segmental arc R7, and the opening direction of segmental arc R7 bending is towards radially inner side.
The utility model has positive effect：Transformer cooling device of the present utility model at work, its impeller
Blade circumferentially rotates in the drive lower edge of wheel hub, and on the direction of rotation, the leading edge of blade is towards rotation direction.Due to blade
Shape have passed through optimized design, for example, considering air quantity, blast, flabellum revolution（Namely rotating speed）, moment of torsion, blade surface
The influence to Blade Properties such as vortex of formation, the parameters obtained by computer software simulation and actual tests result
（Such as blast, power conversion rate, rotating speed）Understand, compared to conventional blade profile, it can significantly improve the mechanical efficiency of blade
5% to 15%.
Brief description of the drawings
Fig. 1 is the structural representation of impeller of the present utility model.
Fig. 2 be Fig. 1 in blade section enlarged diagram, its shown direction be Fig. 1 F-F to.
Mark in above-mentioned accompanying drawing is as follows：Blade 1, wheel hub 2, rotary shaft 3, leading edge 4, trailing edge 5, outer rim 6, inner edge 7, middle arc
Line 8, blade centreline a, chain-dotted line b1, chain-dotted line b2, chain-dotted line b3, maximum gauge t, maximum gauge X-axis coordinate position Xt, most
Big moment of flexure c, maximal bending moment X-axis coordinate position Xc, maximum gauge change in location curve Vt, maximal bending moment change in location curve Vc.
Embodiment
The utility model provides a kind of transformer cooling device, the utility model is made below in conjunction with the accompanying drawings further detailed
Describe in detail bright.
（Embodiment 1）
See Fig. 1, the transformer cooling device of the present embodiment includes motor, shaft coupling, rotary shaft 3 and tube-axial fan leaf
Wheel.Motor is connected by its motor shaft by shaft coupling with rotary shaft 3, and rotary shaft 3 is fixedly connected with impeller.Impeller includes wheel hub 2
With multiple blades 1（The present embodiment is 3）.Rotary shaft 3 is fixedly connected with impeller, is fixedly connected with wheel hub 2.Blade
1 includes leading edge 4, trailing edge 5, outer rim 6 and inner edge 7.Each blade 1 is fixedly connected on the hub 2 by fastener, and each blade
1 inner edge 7 is in contact with the neighboring position of wheel hub 2.
Still see Fig. 1, blade 1 is cast aluminium integral piece, or using nylon material integral piece or be to use other works
The integral piece of engineering plastics material.Leading edge 4 and trailing edge 5 being radially arranged each along wheel hub 2 of blade 1.The leading edge 4 of blade 1 is being taken turns
Hub 2 is made up of three sections of camber lines in the radial direction, and they are the first segmental arc R1, the second segmental arc that are sequentially connected of leading edge 4
R2 and the 3rd segmental arc R3, and mark R1, R2 and R3 in Fig. 1 are also represented half corresponding to each segmental arc of leading edge 4 respectively
Footpath, and radius R1>Radius R2>Radius R3.First segmental arc R1 of leading edge 4 is between inner edge 7 and chain-dotted line b3, before accounting for
The radical length of edge 4（Refer to the length of a curve for representing the leading edge 4 being radially arranged substantially along wheel hub 2）40%.The of leading edge 4
Two segmental arc R2 account for the 50% of radical length between chain-dotted line b3 and chain-dotted line b2.3rd segmental arc R3 positions of leading edge 4
Between chain-dotted line b2 and chain-dotted line b1, the 10% of radical length is accounted for, the openings of the 3rd segmental arc R3 of leading edge 4 bending
To the direction towards rear, namely towards trailing edge 5.
The trailing edge 5 of blade 1 is also made up of three sections of camber lines in the radial direction wheel hub 2, and they are being sequentially connected for trailing edge 5
The first segmental arc R4, the second segmental arc R5 and the 3rd segmental arc R6, and the first segmental arc R4 of trailing edge 5, the second segmental arc R5
It is corresponding with the first segmental arc R1, the second segmental arc R2 and the 3rd segmental arc R3 of leading edge 4 respectively with the 3rd segmental arc R6, and phase
Set for the center line a of the blade 1 in Fig. 1.Mark R4, R5 and R6 in Fig. 1 also represent each segmental arc of trailing edge 5 respectively
Corresponding radius, and radius R4>Radius R5>Radius R6.First segmental arc R4 of trailing edge 5 be located at inner edge 7 and chain-dotted line b3 it
Between, account for the 40% of the radical length of trailing edge 5.Second segmental arc R5 of trailing edge 5 is between chain-dotted line b3 and chain-dotted line b2, about
The 50% of radical length is accounted for, the 3rd segmental arc R6 of trailing edge 5 accounts for radical length between chain-dotted line b2 and chain-dotted line b1
10%, the opening direction of the 3rd segmental arc R6 of trailing edge 5 bending backward, namely the direction towards trailing edge 5, and radius R3>Radius
R6。
The outer rim 6 of blade 1 includes outer arcuate section R7, and opening direction that it bends is towards radially inner side.Shown in Fig. 2
The opening direction of the bending of the mean camber line 8 of blade 1 is towards Y-axis negative direction, namely the opening direction that bends of mean camber line 8 of blade 1
Towards the direction of the output wind-force of blade 1.
See Fig. 2, the section such as airfoil type of blade 1 has a maximum gauge t and maximal bending moment c, blade 1 from radially inner side to
Radial outside width gradually broadens, and described width refers to the distance between leading edge 4 and trailing edge 5.See Fig. 1, can by blade 1 from
Radially inner side is divided into three regions, respectively the first arcuate segments, the second arcuate segments and the 3rd arcuate segments to radial outside.First arc
Shape area is the area that inner edge 7, the first segmental arc R1, the chain-dotted line b3 of leading edge 4 and the first segmental arc R4 of trailing edge 5 are surrounded each other
Domain, the second arcuate segments are the second segmental arc R5 of the second segmental arc R2, the chain-dotted line b2 and trailing edge 5 positioned at chain-dotted line b3, leading edge 4
Mutual area defined, the 3rd arcuate segments are chain-dotted line b2, the 3rd segmental arc R3 of leading edge 4, the of outer rim 6 and trailing edge 5
The three mutual area defined of segmental arc R6.
The maximum gauge t of blade 1 position is change in circumferential direction, and maximum gauge change in location curve Vt is from leaf
The radially inner side of piece 1 to radial outside, curve first approaches, so from after the starting point starting at middle position to the rear to trailing edge 5
Forward edge 4 is close afterwards, finally close to trailing edge 5.Specially：It is maximum thick from radially inner side to radial outside in the first arcuate segments
T is spent after middle starting to the front, and first close to trailing edge 5, rear forward edge 4 is close；In the second arcuate segments, from radially inner side to radially
Outside, it is close that maximum gauge t continues forward edge 4；In the 3rd arcuate segments, from radially inner side to radial outside, maximum gauge t changed courses
Trailing edge 5 is close.
Maximal bending moment c position is also change in circumferential direction, and maximal bending moment change in location curve Vc is from the footpath of blade 1
To inner side to radial outside, the curve is from after the starting of the starting point of middle part, and first forward edge 4 is close, and backward trailing edge 5 connects
Closely, then forward edge 4 is close, and it is close finally to go back forward edge 4.Specially：It is outside from radially inner side to footpath in the first arcuate segments
Side, after maximal bending moment c originates from centre, first forward edge 4 is close, and backward trailing edge 5 is close；In the second arcuate segments, from radially inner side
To radial outside, maximal bending moment c changed course leading edges 4 are close；In the 3rd arcuate segments, from radially inner side to radial outside, maximal bending moment c
Continue forward edge 4 to approach, and it changes the absolute value of slope and is less than maximum gauge change in location curve Vt in the 3rd arcuate segments
Change the absolute value of slope.Maximum gauge change in location curve Vt, maximal bending moment change in location curve Vc are three arcuate segments
Each mutual junction seamlessly transits.
Transformer cooling device impeller of the present utility model, by the optimized design of the shape to blade 1, for example,
Consider air quantity, blast, flabellum revolution（Namely rotating speed）, the vortex etc. that is formed of moment of torsion, blade surface is to the shadows of Blade Properties
Ring, the parameters obtained by computer software simulation and actual tests result（Such as air quantity, blast, power conversion rate, rotating speed
Deng）Understand, compared to conventional blade profile, it can significantly improve the mechanical efficiency 5% to 15% of blade 1.
Above-mentioned embodiment be to explanation of the present utility model, be not to restriction of the present utility model, it is any to this practicality
Structure after new simple transformation belongs to the scope of protection of the utility model.
Claims (4)
1. a kind of transformer cooling device, including motor, shaft coupling, rotary shaft（3）With tube-axial fan impeller；The impeller bag
Include wheel hub（2）With multiple blades（1）；Motor passes through shaft coupling and rotary shaft by its motor shaft（3）It is connected, rotary shaft（3）With leaf
The wheel hub of wheel（2）It is fixedly connected；Blade（1）Including leading edge（4）, trailing edge（5）, outer rim（6）And inner edge（7）；Each blade（1）It is logical
Cross fastener and be fixedly connected on wheel hub（2）On, and each blade（1）Inner edge（7）With wheel hub（2）Neighboring position connect
Touch；Blade（1）With maximum gauge t and maximal bending moment c, blade（1）Gradually broadened from radially inner side to radial outside width；Its
It is characterised by：
From blade（1）Radially inner side to radial outside, maximum gauge t and maximal bending moment c position are to become in circumferential direction
Change；Wherein maximum gauge change in location curve Vt is from blade（1）Radially inner side to radial outside, the curve is from positioned at centre
After the starting point starting at position to the rear, first to blade（1）Trailing edge（5）Approach, then forward edge（4）It is close, finally to trailing edge
（5）It is close；Maximal bending moment change in location curve Vc is from blade（1）Radially inner side to radial outside, the curve is from positioned at centre
After the starting point starting at position, first to blade（1）Leading edge（4）It is close, backward trailing edge（5）Approach, then forward edge（4）Connect
Closely, forward edge is finally gone back（4）It is close.
2. transformer cooling device as claimed in claim 1, it is characterised in that：Blade（1）Leading edge（4）In radial directions
It is made up of three sections of camber lines, they are leading edges（4）The first segmental arc R1 being sequentially connected, the second segmental arc R2 and the 3rd segmental arc
R3；Blade（1）Trailing edge（5）Also it is made up of in radial directions three sections of camber lines, they are trailing edges（5）Be sequentially connected first
Segmental arc R4, the second segmental arc R5 and the 3rd segmental arc R6；Blade（1）Trailing edge（5）The first segmental arc R4 and blade（1）'s
Leading edge（4）The first segmental arc R1 it is corresponding, and by blade（1）Be located at trailing edge（5）The first segmental arc R4 and leading edge（4）'s
Part between first segmental arc R1 is referred to as blade（1）The first arcuate segments；Blade（1）Trailing edge（5）The second segmental arc R5
With blade（1）Leading edge（4）The second segmental arc R2 it is corresponding, and by blade（1）Be located at trailing edge（5）The second segmental arc R5
With leading edge（4）The second segmental arc R2 between part be referred to as blade（1）The second arcuate segments；Blade（1）Trailing edge（5）
Three segmental arc R6 and blade（1）Leading edge（4）The 3rd segmental arc R3 it is corresponding, and by blade（1）Be located at trailing edge（5）
Three segmental arc R6 and leading edge（4）The 3rd segmental arc R3 between part be referred to as blade（1）The 3rd arcuate segments；
In the first arcuate segments, from radially inner side to radial outside, maximum gauge t position is after middle starting to the rear, first backward
Edge（5）It is close, rear forward edge（4）It is close；After maximal bending moment c position originates from centre, first forward edge（4）It is close, after backward
Edge（5）It is close；In the second arcuate segments, from radially inner side to radial outside, forward edge is continued in maximum gauge t position（4）It is close,
The position changed course leading edge of maximal bending moment（4）It is close；In the 3rd arcuate segments, from radially inner side to radial outside, maximum gauge t position
Put changed course trailing edge（5）Close, forward edge is continued in the position of maximal bending moment（4）It is close.
3. transformer cooling device as claimed in claim 2, it is characterised in that：Blade（1）Leading edge（4）The 3rd segmental arc
The opening direction of R3 bending is towards rear, blade（1）Trailing edge（5）The 3rd segmental arc R6 bending opening direction also to
Rear.
4. transformer cooling device as claimed in claim 1, it is characterised in that：Blade（1）Outer rim（6）For segmental arc R7,
The opening direction of segmental arc R7 bending is towards radially inner side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720681095.7U CN206816554U (en) | 2017-06-13 | 2017-06-13 | A kind of transformer cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720681095.7U CN206816554U (en) | 2017-06-13 | 2017-06-13 | A kind of transformer cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206816554U true CN206816554U (en) | 2017-12-29 |
Family
ID=60759872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720681095.7U Expired - Fee Related CN206816554U (en) | 2017-06-13 | 2017-06-13 | A kind of transformer cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206816554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087783A (en) * | 2017-06-13 | 2018-12-25 | 国网江苏省电力公司常州供电公司 | transformer cooling device |
-
2017
- 2017-06-13 CN CN201720681095.7U patent/CN206816554U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109087783A (en) * | 2017-06-13 | 2018-12-25 | 国网江苏省电力公司常州供电公司 | transformer cooling device |
| CN109087783B (en) * | 2017-06-13 | 2023-10-27 | 国网江苏省电力公司常州供电公司 | Transformer cooling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106640491A (en) | Efficient and durable special water turbine for cooling tower | |
| CN105626574A (en) | Hydraulic design method of high-lift axial flow pump impeller | |
| CN107061329A (en) | A kind of axial flow blower | |
| CN201474853U (en) | Vertical axis wind turbine with wind shielding cover | |
| CN206816554U (en) | A kind of transformer cooling device | |
| CN103953497A (en) | Vortex type power mechanism | |
| CN103174584A (en) | Novel auto-launching-type Darrieus-Savonius combined type vertical shaft wind machine | |
| CN107461291B (en) | Down-stroke type waterwheel for low-head miniature hydropower station | |
| CN104033332A (en) | Vertical-axis wind power generation device | |
| CN109087783A (en) | transformer cooling device | |
| CN207145118U (en) | It is a kind of to be used to hit formula waterwheel under in low water head mini | |
| CN109083798B (en) | Fluid power generation device | |
| CN104632506A (en) | Double-impeller driving axial-flow type water turbine generator set | |
| CN204299769U (en) | Novel hydropower fan cooling tower drives special francis turbine runner | |
| CN203906177U (en) | Vertical axis wind turbine | |
| CN104481812A (en) | Wind generator | |
| CN204572334U (en) | The dual mixer-ejector of a kind of low speed wind power | |
| CN204327409U (en) | Wind-driven generator | |
| CN210637183U (en) | Water turbine with energy-saving function | |
| CN106704092A (en) | Synergistic spoiler blade | |
| CN207420772U (en) | Formula waterwheel is hit on a kind of bicircular arcs type blade | |
| CN202690307U (en) | Three powers mixed-flow high efficient water turbine | |
| CN202811219U (en) | Blower with concavo-convex guide edges | |
| CN202280654U (en) | Impeller for centrifugal fan of 600 MW supercritical circulating fluidized bed | |
| CN206522215U (en) | Synergy spoiler blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 |