CN101741177A - Cooling mechanism of power generator - Google Patents

Cooling mechanism of power generator Download PDF

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Publication number
CN101741177A
CN101741177A CN200910264405A CN200910264405A CN101741177A CN 101741177 A CN101741177 A CN 101741177A CN 200910264405 A CN200910264405 A CN 200910264405A CN 200910264405 A CN200910264405 A CN 200910264405A CN 101741177 A CN101741177 A CN 101741177A
Authority
CN
China
Prior art keywords
generator
radiating groove
cooling
rotor
wind
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.)
Pending
Application number
CN200910264405A
Other languages
Chinese (zh)
Inventor
廖恩荣
李更生
沈沛
杨虎
黄晓辉
王中
李志国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Original Assignee
Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd filed Critical Nanjing High Accurate Drive Electromechanical Automation Equipment Co Ltd
Priority to CN200910264405A priority Critical patent/CN101741177A/en
Publication of CN101741177A publication Critical patent/CN101741177A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a cooling mechanism of a power generator, which is characterized in that a central rotor is a hollow cylinder body, an input shaft penetrates the central rotor, the central rotor is fixedly connected with the input shaft through a rib, and exhaust blades are fixedly arranged on the input shaft in the hollow cylinder body of the central rotor.

Description

The cooling body of generator
Technical field
The present invention relates to the inner cooling structure of a kind of generator.
Background technology
In today of fast development, the energy resource consumption aggravation, electric energy is a key factor of social development.Generator is a critical component producing electric energy, and usually capacity motor is done becomes the target that producer is pursued greatly, and some guarantee that the problem of large-size machine performance progressively becomes focus simultaneously.
The operation of a motor normally whether, most important embodiment is exactly the degree of heat of this motor.Because the insulating material of motor windings is along with the time increase of work is aging gradually, insulation property and mechanical strength reduce gradually.If insulating material is surpassing the long-time running of uniform temperature boundary, ageing process will be aggravated, and makes motor brief useful life.If heat dissipation problem is not solved, motor will fall along with the rising of ambient temperature to hold and use.Therefore, good cooling measure can make motor can bring into play the ability to work of motor to greatest extent.
In addition, birotor generator also has utilization in magneto, magneto in running owing to losing the destruction that excitation causes normal operating condition.Large-scale unit loss of excitation fault will at first be reflected as system's reactive power deficiency, and voltage descends, and will cause the voltage collapse of system when serious, make the loss of excitation fault of a generator expand as systemic accident.As seen the steady operation of permanent magnet is very crucial, permanent magnet influences key factor of magneto stable operation, it is exactly the permanent magnet thermal stability, the general heat resisting temperature of neodymium iron boron is about 150-180 ℃ at present, and motor is because harmonic effects, the magnetic of the permanent magnet that the loss temperature rise directly influences causes the high temperature loss of excitation.Therefore use magneto should consider that at first the p-m rotor ventilation and heat is very important.
At present internal rotor is adopted the mode of the cooling of ventilating, do not appear in the newspapers at present.
Summary of the invention
The objective of the invention is to: must consider heating during at the ubiquitous design of generation current machine, by falling the too high actual conditions of capacitance type control generator working temperature, and the too high meeting of generator-temperature detection proposes the structure that a kind of new generator cools to the adverse effect that magneto brings.
The object of the present invention is achieved like this: a kind of cooling body of generator, it is characterized in that: center rotor is hollow cylindrical shell, power shaft runs through center rotor, center rotor is fixedlyed connected with power shaft by muscle, is arranged on the power shaft of the hollow cylindrical shell of center rotor to be set with air exhaust blade.
Among the present invention: the radiating groove that connects before and after can being evenly distributed with at supporting generator unit stator outer surface, each radiating groove is parallel to each other, be set with fan blade on the power shaft of generator one end, be covered with the wind-guiding safety guard on the fan blade, the air outlet of wind-guiding safety guard and radiating groove one end converge.The angle α of the vertical section of radiating groove and stator outer surface is 2~45 degree.
Among the present invention: the radiating groove that connects before and after can also being evenly distributed with at external rotor outer surface with the center rotor direction of rotation, each radiating groove is parallel to each other, and the air inlet of each radiating groove is provided with a wind blade.The angle α of the vertical section of radiating groove and external rotor outer surface is 2~45 degree, and according to the external rotor rotation direction, the air outlet of radiating groove lags behind air inlet.
Among the present invention: described generator is wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator, or the generator in the nuclear power station
The invention has the advantages that: the armature of generator and magnetic field all are in difference stator and the rotor, or be separately positioned in the inner and outer rotors, because center rotor is hollow cylindrical shell, the two ends of generator are equipped with louvre, and be set with air exhaust blade on the power shaft that is arranged in the hollow cylindrical shell of center rotor, in the work, air exhaust blade will force the interior air of hollow cylindrical shell and the air circulation of space outerpace, take away the heat of center rotor, be the rotor cooling; Because the angle α of the vertical section of stator outer surface radiating groove and stator outer surface is 2~45 degree, under equal conditions, has prolonged the physical length of radiating groove relatively, more helps the cooling to stator; Because the radiating groove that before and after the external rotor outer surface with the center rotor direction of rotation is evenly distributed with, connects, the air inlet of each radiating groove is provided with a wind blade, external rotor can import radiating groove with air in rotating, and in circulation, the heat of radiating groove is taken away, be the external rotor cooling.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of an embodiment of the present invention;
Fig. 3 is the structural representation of the another kind of embodiment of the present invention;
Fig. 4 is the compound mode schematic diagram of air inlet and wind blade in the external rotor radiating groove among Fig. 3.
Among the figure 1, center rotor, 2, power shaft, 3, air exhaust blade, 4, louvre, 5, radiating groove, 6, fan blade, 7, the wind-guiding safety guard, 8, wind blade, 9, stator, 10, external rotor, 11, guard ring.
Embodiment
Accompanying drawing discloses the concrete structure of the embodiment of the invention without limitation, below the invention will be further described.
As seen from Figure 1, center rotor 1 of the present invention is hollow cylindrical shell, the two ends of hollow cylindrical shell are equipped with louvre 4, and power shaft 2 runs through center rotor 1 and fixedlys connected with center rotor 1, are arranged on the power shaft 2 of center rotor 1 hollow cylindrical shell to be set with air exhaust blade 3.
Fig. 2 is and the matching used a kind of stator of Fig. 1, as seen from Figure 2, the radiating groove 5 that connects before and after generator unit stator 9 outer surfaces are evenly distributed with, each radiating groove 5 is parallel to each other, be set with fan blade 6 on the power shaft 2 of generator one end, be covered with wind-guiding safety guard 7 on the fan blade 6, the air outlet of wind-guiding safety guard 7 and radiating groove 5 one ends converge.During concrete enforcement, radiating groove 5 is 2~45 degree with the angle α of the vertical section of stator 9 outer surfaces.
Fig. 3 Fig. 4 is and the matching used a kind of external rotor of Fig. 1, in Fig. 2 Fig. 3, be evenly distributed with the radiating groove 5 that front and back connect with external rotor 10 outer surfaces of center rotor 1 direction of rotation, each radiating groove 5 is parallel to each other, and the air inlet of each radiating groove 5 is provided with a wind blade 8.During concrete enforcement, radiating groove 5 is 2~45 degree with the angle α of the vertical section of external rotor 10 outer surfaces, and according to external rotor 10 rotation directions, the air outlet of radiating groove 5 lags behind air inlet.
In the present embodiment, external rotor 10 outer rings are enclosed with guard ring 11, and described guard ring 11 is covered on radiating groove 5 beads.
During concrete enforcement, described generator is wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator or the like.

Claims (6)

1. the cooling body of a generator, it is characterized in that: center rotor is hollow cylindrical shell, and power shaft runs through center rotor, center rotor is fixedlyed connected with power shaft by muscle, is arranged on the power shaft of the hollow cylindrical shell of center rotor to be set with air exhaust blade.
2. the cooling body of generator according to claim 1, it is characterized in that: the radiating groove that connects before and after the generator unit stator outer surface is evenly distributed with, each radiating groove is parallel to each other, be set with fan blade on the power shaft of generator one end, be covered with the wind-guiding safety guard on the fan blade, the air outlet of wind-guiding safety guard and radiating groove one end converge.
3. the cooling body of generator according to claim 2 is characterized in that: the angle α of the vertical section of radiating groove and stator outer surface is 2~45 degree.
4. the cooling body of generator according to claim 1, it is characterized in that: be evenly distributed with the radiating groove that front and back connect with the external rotor outer surface of center rotor direction of rotation, each radiating groove is parallel to each other, and the air inlet of each radiating groove is provided with a wind blade.
5. the cooling body of generator according to claim 4 is characterized in that: the angle α of the vertical section of radiating groove and external rotor outer surface is 2~45 degree, and according to the external rotor rotation direction, the air outlet of radiating groove lags behind air inlet.
6. according to the cooling body of the described generator of one of claim 1~4, it is characterized in that: described generator is wind-driven generator or turbo generator or hydroelectric generator or thermoelectric generator, or the generator in the nuclear power station.
CN200910264405A 2009-12-21 2009-12-21 Cooling mechanism of power generator Pending CN101741177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910264405A CN101741177A (en) 2009-12-21 2009-12-21 Cooling mechanism of power generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910264405A CN101741177A (en) 2009-12-21 2009-12-21 Cooling mechanism of power generator

Publications (1)

Publication Number Publication Date
CN101741177A true CN101741177A (en) 2010-06-16

Family

ID=42464202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910264405A Pending CN101741177A (en) 2009-12-21 2009-12-21 Cooling mechanism of power generator

Country Status (1)

Country Link
CN (1) CN101741177A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321959A (en) * 2013-06-28 2013-09-25 周峰 Fan
CN103321958A (en) * 2013-06-28 2013-09-25 周峰 Axial-flow fan
CN103343746A (en) * 2013-06-28 2013-10-09 周峰 Modified axial flow fan
CN103775604A (en) * 2014-02-24 2014-05-07 广东石油化工学院 Permanent magnet transmission device with forced convection radiating function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103321959A (en) * 2013-06-28 2013-09-25 周峰 Fan
CN103321958A (en) * 2013-06-28 2013-09-25 周峰 Axial-flow fan
CN103343746A (en) * 2013-06-28 2013-10-09 周峰 Modified axial flow fan
CN103775604A (en) * 2014-02-24 2014-05-07 广东石油化工学院 Permanent magnet transmission device with forced convection radiating function

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C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
WD01 Invention patent application deemed withdrawn after publication

Open date: 20100616

C02 Deemed withdrawal of patent application after publication (patent law 2001)