CN2773869Y - Axial-flow ventilator of 9Q series transformer - Google Patents
Axial-flow ventilator of 9Q series transformer Download PDFInfo
- Publication number
- CN2773869Y CN2773869Y CN 200420110783 CN200420110783U CN2773869Y CN 2773869 Y CN2773869 Y CN 2773869Y CN 200420110783 CN200420110783 CN 200420110783 CN 200420110783 U CN200420110783 U CN 200420110783U CN 2773869 Y CN2773869 Y CN 2773869Y
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- blade
- impeller
- motor
- millimeters
- blower fan
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Abstract
The utility model relates to an axial-flow ventilator of a 9Q series transformer, which is composed of a motor, an impeller, a flow guiding cover, a bracket, a machine housing and a protective hood. The utility model is characterized in that the motor (1) is positioned on the inlet end of a blower fan, and a motor shaft (2) is connected with the impeller (3) to drive the impeller (3) to rotate. The motor (1) is supported by the bracket (4) and is sheathed with the flow guiding cover (5). The flow guiding cover (5) is a hollow conical cylinder of which the diameter of the bottom end surface is equal to the diameter of a wheel hub, and the machine housing (6) is a cylinder with a diameter of 910 mm. The inlet end surface of the blower fan is provided with a protective cover (7), and the blade (8) is a three-dimensional twisted blade. The technique has the advantages of big flow quantity, high full voltage, low noise and low energy consumption.
Description
Affiliated technical field
The utility model relates to a kind of axial-flow ventilating machine for transformer, and this kind propeller fan is mainly used in the Large and Medium-sized Power Transformer cooling system.
Background technology
Axial-flow ventilating machine for transformer is the important component part of Large and Medium-sized Power Transformer cooling system.Generally require it will have preferable performance, promptly flow is big, the total head height, and noise is little.The version of propeller fan is more single, generally form by several parts such as motor, impeller, support, casing and protective covers, but wherein the shape of the structure of impeller and profile, particularly blade but changes a lot, to the aeroperformance of propeller fan also decisive role.Traditional propeller fan method for designing comprises that with the good wing of aeroperformance be the isolated Blade Design Method of original blade profile and based on the Design of Cascade method of two-dimensional cascade theory, last century the nineties some have appearred based on the moving blade shape construction methods of quasi-three dimensional flow.Adopt the designed ventilating vane of said method many be plane blade, though technology is simple, poor-performing.A spot of twisted blade also is to be formed by stacking by plane cascade mostly, rather than the real twisted blade based on full three-dimensional modeling design, thereby has also influenced the performance of ventilation blower, thereby is difficult to reach the requirement that the axial-flow ventilating machine for transformer flow is big, total head is high.
Summary of the invention
The utility model aims to provide the 9Q serial transformer propeller fan that a kind of flow is big, total head is high, and wherein 9 expression draught fan impeller diameters are 900 millimeters, and Q represents that blower fan is the fore blow formula.
The utility model-9Q serial transformer propeller fan, its overall structure types is made up of 6 parts such as motor, impeller, kuppe, support, casing and protective covers.It is characterized in that motor is positioned at the entrance point of blower fan, motor shaft links to each other with impeller, the drives impeller rotation, motor is by stent support, the outside is with kuppe, kuppe is positioned at the entrance point of blower fan, taper cylinder for hollow, the diameter of bottom face and the equal diameters of wheel hub, casing is the cylindrical shape of 910 millimeters of diameters, slightly is bell mouth shape at entrance point, so that air-flow enters the runner of blower fan smooth-goingly, on the entrance point end face of blower fan, protective cover is arranged, to avoid foreign material to enter the blower fan runner and blade clashes into.
Fan blade wherein is a particular design, in design process, adopt parabolic theory and do not waited the merit principle, flow pattern and stream interface to blade carry out complete three-dimensional shape-designing, the blade that obtains is three-dimensional twisted blade, it is characterized by not uniform thickness of blade, profile is smooth continuously, and arbitrary face that passes through mutually cuts mutually with profile, the intersection that obtains is the airfoil of streamline shape, so that the utlity model has good aeroperformance.
In the general structure of the present utility model, increased the kuppe part, kuppe is positioned at the entrance point of blower fan, be enclosed within the outside of motor, its effect is to make air-flow enter the runner of ventilation blower smooth-goingly, thereby can improve the suction of draught fan impeller at entrance point, makes the maximum efficient of ventilation function performance.
The beneficial effects of the utility model are that because blade is three-dimensional twisted blade, it is smooth continuously to it is characterized by profile, the outside is with kuppe, make air-flow enter the runner of ventilation blower, thereby 9Q serial transformer propeller fan has good aeroperformance, flow is big smooth-goingly, the total head height, noise is low, and the saving energy is stable, performance curve is smooth, and the scope of application is wide.
Description of drawings
Fig. 1 is the utility model general structure schematic diagram;
Fig. 2 is the utility model blade wheel structure end view;
Fig. 3 is the utility model blade wheel structure front view;
Fig. 4 is the front view of the utility model twisted blade;
Fig. 5 is the end view of the utility model twisted blade;
Fig. 6 is the vertical view of the utility model twisted blade;
Fig. 7 is the shape after the blade section at the utility model twisted blade blade tip place (r=450mm) launches;
Fig. 8 is the shape after the blade section at the utility model twisted blade r=355.76mm place launches;
Fig. 9 is the shape after the blade section at the utility model twisted blade blade root place (r=225mm) launches;
Among the figure: motor-1, motor shaft-2, impeller-3, support-4, kuppe-5, casing-6, protective cover-7, blade-8, wheel hub-9, blade root-10, blade tip-11
Embodiment
Figure 1 shows that the general structure schematic diagram of the utility model preferred embodiment 1, airflow direction is for from left to right.Motor 1 is positioned at the entrance point of blower fan, and motor shaft 2 links to each other with impeller 3, drives impeller 3 rotations.Motor 1 is supported by support 4, and the outside is with kuppe 5, and kuppe 5 is the taper cylinder of hollow, and the tapering of cone is 13 °, and length is 236 millimeters, the diameter of bottom face and the equal diameters of wheel hub.Casing 6 is the cylindrical shape of 910 millimeters of diameters, slightly is bell mouth shape at entrance point, so that air-flow enters the runner of blower fan smooth-goingly.Design has a protective cover 7 on the entrance point end face of blower fan, to avoid foreign material to enter the blower fan runner and blade clashes into.
Fig. 2,3 is depicted as the end view and the front view of impeller part-structure of the present utility model.Impeller is made up of blade 8 and wheel hub 9, the diameter of bottom face and the equal diameters of wheel hub.Casing 6 is the cylindrical shape of 910 millimeters of diameters, slightly is bell mouth shape at entrance point, so that air-flow enters the runner of blower fan smooth-goingly.Design has a protective cover 7 on the entrance point end face of blower fan, to avoid foreign material to enter the blower fan runner and blade clashes into.
Fig. 2,3 is depicted as the end view and the front view of impeller part-structure of the present utility model.Impeller is made up of blade 8 and wheel hub 9, and whole impeller diameter is 900 millimeters, the diameter of wheel hub and the diameter ratio of impeller, and promptly hub ratio μ can be in 0.45 to 0.55 range, and hub ratio μ is 0.5 in the present embodiment, and promptly hub diameter is 450 millimeters.The range of choice of impeller width is 110 millimeters to 130 millimeters, is 120 millimeters in the present embodiment.Blade is installed on the wheel hub with certain subtended angle of blade θ, and the excursion of subtended angle of blade θ can change to scope to 33 ° at 25 °, and subtended angle of blade increases, and the maximum stream flow of blower fan and total head are increased, and in the present embodiment, subtended angle of blade θ is 31 °.Blade evenly arranges circumferentially that wheel hub in concrete enforcement, the number of blade can be selected according to the needs of performance in 3 to 8 scope, its rule is that number of blades reduces, and then air quantity reduces, and blast reduces.In the present embodiment, the number of blade is 8.
Fig. 4,5 and 6 is respectively front view, end view and the vertical view of blade 8 of the present utility model.Blade 8 is three-dimensional twisted blade, and parabolic index α 1, α and the α 2 of blade convex surface, middle profile and concave surface are respectively 0.5,0.55,0.6.Fig. 7,8 and 9 is the shape after three typical blade sections launch, and promptly is respectively r=450mm (blade tip) with radius, r=355.76mm, the shape after the tangent resulting blade profile line of r=225mm (blade root) face of cylinder and blade launches.The feature of blade 8 is, its blade root 10 width are less, and blade tip 11 width are big, and from the blade tip to the blade root, the width of blade reduces gradually, but the maximum ga(u)ge of blade section then increases gradually.
Claims (5)
1, a kind of 9Q serial transformer propeller fan, form by motor, impeller, kuppe, support, casing and protective cover, it is characterized in that motor (1) is positioned at the entrance point of blower fan, motor shaft (2) links to each other with impeller (3), motor (1) is supported by support (4), the outside is with kuppe (5), kuppe (5) is positioned at the entrance point of blower fan, taper cylinder for hollow, the diameter of bottom face and the equal diameters of wheel hub, casing (6) is the cylindrical shape of 910 millimeters of diameters, slightly is bell mouth shape at entrance point, and protective cover (7) is arranged on the entrance point end face of blower fan.
2, the described 9Q serial transformer of root a tree name claim 1 propeller fan is characterized in that described kuppe (5) is the taper cylinder of hollow, and the tapering of cone is 13 °, and length is 236 millimeters.
3, the described 9Q serial transformer of root a tree name claim 1 propeller fan, it is characterized in that described impeller (3) is made up of blade (8) and wheel hub (9), whole impeller diameter is 900 millimeters, the hub ratio scope is 0.45 to 0.55, the impeller width range is 110 millimeters to 130 millimeters, and subtended angle of blade θ scope is 25 ° to 33 °.
4, root a tree name claim 1 or 3 described 9Q serial transformer propeller fans is characterized in that described blade (8) is three-dimensional twisted blade, the parabolic distortion index α of blade convex surface, middle profile and concave surface
1, α and α
2Be respectively 0.5,0.55,0.6, be respectively r=450mm with radius, the shape facility structure after the tangent resulting blade profile line of the r=225mm face of cylinder and blade launches, twisted blade is from the blade tip to the blade root, the width of blade reduces gradually, and the maximum ga(u)ge of blade section then increases gradually.
5, root a tree name claim 1 or 3 described 9Q serial transformer propeller fans is characterized in that described blade (8) number is 3 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420110783 CN2773869Y (en) | 2004-12-01 | 2004-12-01 | Axial-flow ventilator of 9Q series transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420110783 CN2773869Y (en) | 2004-12-01 | 2004-12-01 | Axial-flow ventilator of 9Q series transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2773869Y true CN2773869Y (en) | 2006-04-19 |
Family
ID=36709134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420110783 Expired - Fee Related CN2773869Y (en) | 2004-12-01 | 2004-12-01 | Axial-flow ventilator of 9Q series transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2773869Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340153A (en) * | 2018-10-30 | 2019-02-15 | 江苏贝莱德风机制造有限公司 | A kind of stable type aging furnace high-temperature resistant axial-flow fan |
| CN110100102A (en) * | 2016-12-23 | 2019-08-06 | 施乐百有限公司 | The arrangement of blower module and one or more this blower modules in flow duct |
-
2004
- 2004-12-01 CN CN 200420110783 patent/CN2773869Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110100102A (en) * | 2016-12-23 | 2019-08-06 | 施乐百有限公司 | The arrangement of blower module and one or more this blower modules in flow duct |
| CN109340153A (en) * | 2018-10-30 | 2019-02-15 | 江苏贝莱德风机制造有限公司 | A kind of stable type aging furnace high-temperature resistant axial-flow fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |