CN101429950A - Movable vane controlling mechanism of axial fan - Google Patents
Movable vane controlling mechanism of axial fan Download PDFInfo
- Publication number
- CN101429950A CN101429950A CNA2008102322748A CN200810232274A CN101429950A CN 101429950 A CN101429950 A CN 101429950A CN A2008102322748 A CNA2008102322748 A CN A2008102322748A CN 200810232274 A CN200810232274 A CN 200810232274A CN 101429950 A CN101429950 A CN 101429950A
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- China
- Prior art keywords
- movable vane
- axial
- wheel hub
- controlling mechanism
- flow blower
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Abstract
The invention relates to the field of the axial-flow fan manufacture and discloses an adjusting mechanism for a movable vane of an axial-flow fan. The adjusting mechanism correspondingly adjusts a single movable vane of the axial-flow fan, which is characterized in that the adjusting mechanism comprises a bearing arranged in a wheel hub of the axial-flow fan, and an angle stroke electric operator fixed inside of the wheel hub; and a movable vane rotating shaft of the axial-flow fan passes through the bearing and is fixedly connected with an output shaft of the angle stroke electric operator.
Description
Technical field
The present invention relates to axial-flow blower and make field, particularly a kind of movable vane controlling mechanism of axial-flow blower.
Background technique
The large axial flow fan that movable vane is adjustable, air quantity is big usually, power is high, is mainly used in occasions such as power station, mine.When working conditions change,, then can reach purpose of energy saving, and this adjusting is to finish the in service of blower fan so that blower fan operates in efficient district to greatest extent by changing the angle of laying of movable vane.For example in power plant, because the electric power of generator set output had very big variation in one day, therefore the needed air quantity of boiler also changes thereupon, in order to make blower fan all the time in efficient district's work, need to regulate the angle of laying of movable vane, and this adjusting is to carry out in the process of fan operation.
The mode that existing movable vane regulative mode all adopts electro-hydraulic servo to drive, it comprises fluid pressure drive device and controlling device.Hydraulic pressure installation mainly comprises oil hydraulic cylinder, piston, seal arrangement, oil pump etc.; Controlling device mainly comprises electric actuator, oil supply system, angle indication etc.During work, the oil pressure that changes the piston both sides by oil pump is poor, make oil hydraulic cylinder move vertically, oil hydraulic cylinder is hinged by crank and movable vane, realize the axis rotation of movable vane by moving axially of oil hydraulic cylinder like this around self, reach the purpose of regulating the movable vane laying angle, thereby realize regulating the performance of blower fan, make blower fan in efficient district's work.
There is following problem in existing electrohydraulic servo system: at first, whole regulating system, mechanism's complexity, component are many, the installation and maintenance difficulty; The component accuracy of manufacturing requires high, the manufacture cost height; The regulation structure size is big, and the response time is long, when needs accurately, fast, when frequently regulating, existing controlling mechanism is difficult to satisfy to regulate requirement; Secondly, system oil pressure is difficult to just satisfy regulate requirement, and during low fuel pressure, it is little and regulate difficulty to cause that movable vane is regulated power, when oil pressure is too high, causes that oil hydraulic cylinder damages, the sealing leakage of oil; And the oil that causes of blower fan long-time running changes, and stops up oil circuit, or causes and regulate malfunctioningly, perhaps seals leakage of oil.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, response fast, the movable vane controlling mechanism of axial-flow blower that cost is low.
To achieve these goals, the present invention is achieved by the following technical solutions: a kind of movable vane controlling mechanism of axial-flow blower, the single movable vane of corresponding adjusting axle flow fan, it is characterized in that, comprising: be arranged on bearing and the angle stroke electric actuator that is fixed on the wheel hub inboard in the axial-flow blower wheel hub; The movable vane rotating shaft of axial-flow blower is passed described bearing and is fixedlyed connected with the output shaft of described angle stroke electric actuator.
Further improvement of the present invention is:
Described bearing is two, and one near the wheel hub inboard, outside the close wheel hub.
Further characteristics of the present invention are:
Described bearing near the wheel hub inboard is a deep groove ball bearing.
Described bearing near the wheel hub outside is a tapered roller bearing.
Because the present invention has adopted single angle stroke electric actuator directly to regulate the angle of single movable vane, has reduced the size of controlling mechanism and the response time of adjusting, is fit to the occasion of the frequent adjusting function of the little and civilian needs of blower fan body; With respect to electrohydraudic servomechanism, component are few, and are simple in structure, and cost is low, are easy to installation and maintenance; Do not exist above-mentionedly, for example seal leakage of oil, oil degenerates, stop up oil circuit, oil pressure is difficult to problems such as control owing to the problem that adopts hydraulic system to bring.And, near the wheel hub inboard deep groove ball bearing is being set, near wheel hub arranged outside tapered roller bearing, make angle stroke electric actuator adjusting more flexible.
Description of drawings
Fig. 1 looks schematic representation for the master of the specific embodiment of the invention;
Fig. 2 looks for the left side of Fig. 1 and cuts open figure;
Wherein: 1-movable vane; The rotating shaft of 2-movable vane; 3-wheel hub; 4-tapered roller bearing; 5-deep groove ball bearing; 6-angle stroke electric actuator output shaft, 7-angle stroke electric actuator, 8-coupling.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further details.
Movable vane controlling mechanism of the present invention, the single movable vane of corresponding adjusting axle flow fan, it comprises: be arranged on bearing and the angle stroke electric actuator that is fixed on the wheel hub inboard in the axial-flow blower wheel hub; The movable vane rotating shaft of axial-flow blower is passed described bearing and is fixedlyed connected with the output shaft of described angle stroke electric actuator.
With reference to Fig. 1, Fig. 2, in the present embodiment, tapered roller bearing 4 is near the wheel hub installed inside, deep groove ball bearing 5 is installed near the wheel hub outside, movable vane 1 is placed on the wheel hub 3 by movable vane rotating shaft 2, bear along the radial force of movable vane rotating shaft 2 by tapered roller bearing 4, bear along the axial force of movable vane rotating shaft 2 by deep groove ball bearing 5, these two bearings can make movable vane 1 moving leaf rotating shaft 2 rotate freely.Angle stroke electric actuator 7 is fixed on wheel hub 3 inboards, and its output shaft 6 links together by coupling 8 and movable vane rotating shaft 2, has guaranteed that movable vane rotating shaft 2 energy and angle stroke electric actuator output shaft 6 rotate synchronously, reach the purpose of regulating movable vane 1 setting angle.
Because the technology of angle stroke electric actuator reaches its maturity, for example in regulation range, precision, stability, aspects such as moment of torsion all can satisfy the requirement of movable vane 1 angle adjustment, therefore the present invention is the angle of swing that angle stroke electric actuator is applied to regulate movable vane 1, make that the movable vane controlling mechanism is simple in structure, response fast.
Claims (4)
1, a kind of movable vane controlling mechanism of axial-flow blower, the single movable vane of corresponding adjusting axle flow fan is characterized in that, comprising: be arranged on bearing and the angle stroke electric actuator that is fixed on the wheel hub inboard in the axial-flow blower wheel hub; The movable vane rotating shaft of axial-flow blower is passed described bearing and is fixedlyed connected with the output shaft of described angle stroke electric actuator.
2, the movable vane controlling mechanism of a kind of axial-flow blower according to claim 1 is characterized in that, described bearing is two, and one near the wheel hub inboard, outside the close wheel hub.
3, the movable vane controlling mechanism of a kind of axial-flow blower according to claim 2 is characterized in that, described bearing near the wheel hub inboard is a deep groove ball bearing.
4, the movable vane controlling mechanism of a kind of axial-flow blower according to claim 2 is characterized in that, described bearing near the wheel hub outside is a tapered roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102322748A CN101429950A (en) | 2008-11-14 | 2008-11-14 | Movable vane controlling mechanism of axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102322748A CN101429950A (en) | 2008-11-14 | 2008-11-14 | Movable vane controlling mechanism of axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101429950A true CN101429950A (en) | 2009-05-13 |
Family
ID=40645535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102322748A Pending CN101429950A (en) | 2008-11-14 | 2008-11-14 | Movable vane controlling mechanism of axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101429950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762972A (en) * | 2017-12-05 | 2018-03-06 | 武汉思亘远电控设备有限公司 | A kind of self-saturation type axle induced-draft fan movable vane piece adjustment mechanism and its method of work |
| CN111794809A (en) * | 2020-08-10 | 2020-10-20 | 长兴永能动力科技有限公司 | Adjustable turbine blade for centripetal turbine |
-
2008
- 2008-11-14 CN CNA2008102322748A patent/CN101429950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762972A (en) * | 2017-12-05 | 2018-03-06 | 武汉思亘远电控设备有限公司 | A kind of self-saturation type axle induced-draft fan movable vane piece adjustment mechanism and its method of work |
| CN111794809A (en) * | 2020-08-10 | 2020-10-20 | 长兴永能动力科技有限公司 | Adjustable turbine blade for centripetal turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090513 |