CN104863877A - Outer rotor permanent magnet fan system for direct-cooling thermal power plant - Google Patents
Outer rotor permanent magnet fan system for direct-cooling thermal power plant Download PDFInfo
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- CN104863877A CN104863877A CN201510318746.1A CN201510318746A CN104863877A CN 104863877 A CN104863877 A CN 104863877A CN 201510318746 A CN201510318746 A CN 201510318746A CN 104863877 A CN104863877 A CN 104863877A
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- permanent magnet
- rotor permanent
- motor
- magnet motor
- outer rotor
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
An outer rotor permanent magnet fan system for a direct-cooling thermal power plant comprises a frequency converter, an outer rotor permanent magnet motor, fan blades and other accessories. The frequency converter can be placed on a ground control room and can also be placed inside the outer rotor permanent magnet motor, a control system and a frequency conversion system are integrated, the distance between the frequency converter and the outer rotor permanent magnet motor is shortened, an outer rotor of the outer rotor permanent magnet motor rotates, an inner stator of the outer rotor permanent magnet motor is fixed, the fan blades are directly fixed or fixed on the outer side of the rotating rotor through adaptors and can be placed at any axial positions of the outer side of the rotor according to practical working demands, and a cooling fan is mounted inside the stator of the outer rotor permanent magnet motor and can be used for cooling the motor. When the frequency converter is integrated inside the outer rotor permanent magnet motor, the motor and the frequency converter can be simultaneously cooled, the cooling fan can be omitted, and natural cooling can be realized. A cooling fan motor inside the outer rotor permanent magnet motor can be provided with an outer rotor structure or inner rotor structure and can run at a constant speed, the speed can be automatically adjusted according to practical working conditions, and intelligent control is realized.
Description
Technical field
The present invention relates to the direct air cooling system of thermal power plant, the blower fan system that thermal power plant's air direct cooling system that concrete is is used.
Background technique
The heat energy that thermal power generation produces when being and utilizing solid, liquid, the gas fuel combustions such as coal, oil, rock gas, water is heated, form high-temperature high-pressure overheat steam, pushing turbine rotates, and steam turbine again drive electrical generators rotates a kind of generation mode producing electric energy.The high-temperature high-pressure overheat steam discharging calorific potential energy is discharged from the steam-expelling port of steam turbine bottom, is called exhaust steam.Direct air cooling system is the exhaust steam of being discharged by steam turbine, is introduced being referred to as, in the steel radiator of air cooling condenser, to be directly cooled to water of condensation by ambient air by pipeline.The thermal power plant of direct air cooling system is used to be called direct-cooled thermal power plant during cooling exhaust steam.
The core of the air cooling system that direct-cooled thermal power plant uses is blower fan system, and blower fan system in the market mainly comprises the parts such as fan blade, asynchronous motor, retarder and frequency variator, this traditional blower fan system there is the following problem:
1, running efficiency of system is low.System uses asynchronous motor, and is often in underpower running state, and operational efficiency is lower; The efficiency of retarder is also lower in addition, and the operational efficiency that result in whole system is low.
2, system reliability is low.Speed reducer rate of fault is high, and maintenance is large, and maintenance cost is high.
3, system unit is many, takes up room large.
Summary of the invention
In order to overcome the problems referred to above existing for current direct-cooled thermal power plant blower fan system, the invention provides a kind of direct-cooled thermal power plant external rotor permanent magnet blower fan system, be made up of frequency variator, outer-rotor permanent magnet motor, fan blade and other appurtenances, it is characterized in that: frequency variator can be placed in ground level control room, also outer-rotor permanent magnet motor inside can be placed in, control system and frequency conversion system integrated, shorten the distance between frequency variator to outer-rotor permanent magnet motor; Outer-rotor permanent magnet motor external rotor rotates, and internal stator is fixed, fan blade directly fixing or be fixed on rotation by adaptor rotor outside, the arbitrary position on the direction that can be in outside rotor vertically according to requirement of actual working condition; The stator interior of outer-rotor permanent magnet motor installs cooling fan, can cool motor, when frequency variator is integrated into outer-rotor permanent magnet motor inside, can cools simultaneously, also can not install cooling fan, carry out nature cooling to motor and frequency variator; The cooling fan motor of outer-rotor permanent magnet motor inside can adopt outer-rotor structure motor, also can adopt inner rotor core motor, constant rotational speed can operate, also according to actual conditions adjusting rotary speed voluntarily, can realize intelligent control.
The invention has the beneficial effects as follows, improve operational efficiency and the reliability of blower fan system, decrease system maintenance cost, compact structure, occupy little space, blower fan system intelligent control can be realized.
Accompanying drawing explanation
Fig. 1 ~ Fig. 4 is external rotor permanent magnet blower fan system structural drawing.
Fig. 5 ~ Fig. 8 is external rotor permanent magnet blower fan system fan blade long splice composition.
In Fig. 1 ~ Fig. 8: 1. frequency variator, 2. outer-rotor permanent magnet motor, 3. stator, 4. rotor, 5. fan blade, 6. cooling fan, 7. cooling fan motor, 8. adaptor.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
In FIG, the stator (3) of outer-rotor permanent magnet motor (2) is fixed, and outer-rotor permanent magnet motor (2) rotor (4) is connected with fan blade (5).
In fig. 2, the stator (3) of outer-rotor permanent magnet motor (2) is fixed, outer-rotor permanent magnet motor (2) rotor (4) is connected with fan blade (5), the stator (3) that cooling fan motor (7) in cooling fan (6) is directly fixed on outer-rotor permanent magnet motor (2) is inner, for outer-rotor permanent magnet motor (2) provides cooling air.
In figure 3, in outer-rotor permanent magnet motor (2), stator (3) is fixed, outer-rotor permanent magnet motor (2) rotor (4) is connected with fan blade (5), and the stator (3) that frequency variator (1) is directly fixed on outer-rotor permanent magnet motor (2) is inner.
In the diagram, in outer-rotor permanent magnet motor (2), stator (3) is fixed, outer-rotor permanent magnet motor (2) rotor (4) is connected with fan blade (5), the stator (3) that cooling fan motor (7) in frequency variator (1) and cooling fan (6) is directly fixed on outer-rotor permanent magnet motor (2) is inner, and cooling fan (6) provides cooling air for outer-rotor permanent magnet motor (2) and frequency variator (1).
In Figure 5, fan blade (6) is directly fixed on rotor (4) bottom of outer-rotor permanent magnet motor (2).
In figure 6, fan blade (6) is directly fixed on rotor (4) middle part of outer-rotor permanent magnet motor (2).
In the figure 7, fan blade (6) is directly fixed on adaptor (8), and adaptor (8) is fixed on rotor (4) bottom of outer-rotor permanent magnet motor (2).
In fig. 8, fan blade (6) is directly fixed on adaptor (8), rotor (4) middle part of the fixing outer-rotor permanent magnet motor (2) of adaptor (8).
Claims (4)
1. a direct-cooled thermal power plant external rotor permanent magnet blower fan system, be made up of frequency variator, outer-rotor permanent magnet motor, fan blade and other appurtenances, it is characterized in that: frequency variator can be placed in ground level control room, also outer-rotor permanent magnet motor inside can be placed in, control system and frequency conversion system integrated, shorten the distance between frequency variator to outer-rotor permanent magnet motor.
2. one according to claim 1 direct-cooled thermal power plant external rotor permanent magnet blower fan system, it is characterized in that: outer-rotor permanent magnet motor external rotor rotates, internal stator is fixed, fan blade directly fixing or be fixed on rotation by adaptor rotor outside, the arbitrary position on the direction that can be in outside rotor vertically according to requirement of actual working condition.
3. one according to claim 1 direct-cooled thermal power plant external rotor permanent magnet blower fan system, it is characterized in that: the stator interior of outer-rotor permanent magnet motor installs cooling fan, can cool motor, when frequency variator is integrated into outer-rotor permanent magnet motor inside, can cool motor and frequency variator simultaneously, also cooling fan can not be installed, carry out nature cooling.
4. one according to claim 3 direct-cooled thermal power plant external rotor permanent magnet blower fan system, it is characterized in that: the cooling fan motor of outer-rotor permanent magnet motor inside can adopt outer-rotor structure motor, also inner rotor core motor can be adopted, can constant rotational speed operate, also according to actual conditions adjusting rotary speed voluntarily, intelligent control can be realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318746.1A CN104863877A (en) | 2015-06-12 | 2015-06-12 | Outer rotor permanent magnet fan system for direct-cooling thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318746.1A CN104863877A (en) | 2015-06-12 | 2015-06-12 | Outer rotor permanent magnet fan system for direct-cooling thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104863877A true CN104863877A (en) | 2015-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510318746.1A Pending CN104863877A (en) | 2015-06-12 | 2015-06-12 | Outer rotor permanent magnet fan system for direct-cooling thermal power plant |
Country Status (1)
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| CN (1) | CN104863877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575422A (en) * | 2017-09-22 | 2018-01-12 | 杭州江南电机股份有限公司 | A kind of disinfection cabinet special fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2614399Y (en) * | 2003-03-12 | 2004-05-05 | 浙江卧龙科技股份有限公司 | Integral variable frequency motor |
| CN102338109A (en) * | 2011-07-19 | 2012-02-01 | 平安电气股份有限公司 | Built-in integrated frequency conversion fan |
| CN104481898A (en) * | 2014-12-05 | 2015-04-01 | 浙江理工大学 | Outer-rotor axial flow fan adopting electromagnet bearing |
| CN104533810A (en) * | 2014-11-24 | 2015-04-22 | 北京百正创源科技有限公司 | Direct-driven bower system for direct-cooling thermal power plant |
-
2015
- 2015-06-12 CN CN201510318746.1A patent/CN104863877A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2614399Y (en) * | 2003-03-12 | 2004-05-05 | 浙江卧龙科技股份有限公司 | Integral variable frequency motor |
| CN102338109A (en) * | 2011-07-19 | 2012-02-01 | 平安电气股份有限公司 | Built-in integrated frequency conversion fan |
| CN104533810A (en) * | 2014-11-24 | 2015-04-22 | 北京百正创源科技有限公司 | Direct-driven bower system for direct-cooling thermal power plant |
| CN104481898A (en) * | 2014-12-05 | 2015-04-01 | 浙江理工大学 | Outer-rotor axial flow fan adopting electromagnet bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575422A (en) * | 2017-09-22 | 2018-01-12 | 杭州江南电机股份有限公司 | A kind of disinfection cabinet special fan |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |
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| WD01 | Invention patent application deemed withdrawn after publication |