CN113497523A - Air-air cooling system for double-fed generator - Google Patents
Air-air cooling system for double-fed generator Download PDFInfo
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- CN113497523A CN113497523A CN202010193341.0A CN202010193341A CN113497523A CN 113497523 A CN113497523 A CN 113497523A CN 202010193341 A CN202010193341 A CN 202010193341A CN 113497523 A CN113497523 A CN 113497523A
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 230000005284 excitation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
- H02K9/18—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides an air-to-air cooling system for a doubly-fed generator, which comprises: the box etc. outer circulating fan is installed to the front end of box, and the interior circulation air inlet through-hole has been seted up to the intermediate position of bottom half, and the first air-out through-hole of interior circulation and interior circulation second air-out through-hole have been seted up to the bottom half, and first inner circulating fan is installed to the left end of box, and the air outlet and the first air-out through-hole intercommunication of interior circulation of first inner circulating fan, second inner circulating fan are installed to the right-hand member of box, and the air outlet and the interior circulation second air-out through-hole intercommunication of second inner circulating fan. As described above, the air-air cooling system for the doubly-fed generator of the present invention solves the problem that the cooling requirement cannot be met due to the large volume of the existing air-air cooling system in the case of the high-power doubly-fed wind generator in the prior art, especially the case that the generator main shaft does not have the cooling fan.
Description
Technical Field
The invention relates to the technical field of cooling, in particular to an air-air cooling system for a double-fed generator.
Background
Ac excited generators are also known as doubly fed generators. The AC excitation generator adopts AC voltage excitation on the rotor side, so that the AC excitation generator has a flexible operation mode and has incomparable advantages compared with the traditional synchronous generator in the aspects of solving the problems of continuous power frequency overvoltage of a power station, variable-speed constant-frequency power generation, speed regulation of a motor-generator set of a pumped storage power station and the like. With the development of the doubly-fed generator and the improvement of power, particularly under the condition that a main shaft of the generator is not provided with a cooling fan, an existing air-air cooling system cannot meet the cooling requirement, and the air-air cooling system has the advantages of being simple in structure and maintenance compared with an air-water cooling system.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides an air-to-air cooling system for a doubly-fed wind generator, which is used to solve the problem that the existing air-to-air cooling system cannot meet the cooling requirement due to its large volume in the prior art of high-power doubly-fed wind generators, especially in the case of a generator main shaft without a cooling fan.
To achieve the above and other related objects, the present invention provides an air-to-air cooling system for a doubly-fed generator, comprising: a box body, a heat exchange core body, an external circulation air inlet channel, an external circulation air outlet channel, an external circulation fan, a first internal circulation fan and a second internal circulation fan,
the heat exchange core body, the external circulation air inlet channel and the external circulation air outlet channel are all arranged inside the box body, the external circulation fan is installed at the front end of the box body, the air inlet of the external circulation fan is located outside the box body, the air outlet of the external circulation fan is communicated with one end of the external circulation air inlet channel, the other end of the external circulation air inlet channel is communicated with the inside of the heat exchange core body, one end of the external circulation air outlet channel is communicated with the inside of the heat exchange core body, and the other end of the external circulation air outlet channel is communicated with the rear end of the box body;
the air inlet through-hole of inner loop has been seted up to the intermediate position of bottom half, the bottom half has been seted up near left end department and has been seted up the first air-out through-hole of inner loop, the bottom half is close to right-hand member department and has been seted up the second air-out through-hole of inner loop, install the left end of box first inner loop fan, the air intake of first inner loop fan is located in the box, the air outlet of first inner loop fan with the first air-out through-hole intercommunication of inner loop, install the right-hand member of box the second inner loop fan, the air intake of second inner loop fan is located the box, the air outlet of second inner loop fan with inner loop second air-out through-hole intercommunication.
As an optimal technical scheme, the bottom of the box body is provided with the base, the device is conveniently butted with an upper open air port of the double-fed generator through the base, namely, the internal circulation air inlet through hole, the internal circulation first air outlet through hole and the internal circulation second air outlet through hole are conveniently butted with the upper open air port, and circulation of internal circulation air is realized.
As a preferred technical scheme, the number of the external circulation fans is two.
As a preferable technical scheme, two first internal circulation fans are arranged.
As a preferable technical scheme, two second internal circulation fans are arranged.
As described above, according to the air-air cooling system for the doubly-fed generator, the internal circulation air inlet through hole, the internal circulation first air outlet through hole and the internal circulation second air outlet through hole are in butt joint with the upper open air port of the doubly-fed generator, and the external circulation fan sucks cold air outside the cabin cover into the heat exchange core. The hot air in the double-fed generator is sucked into the heat exchange core by the first internal circulation fan and the second internal circulation fan, and is subjected to heat exchange with cold air sucked into the heat exchange core from the outside of the cabin cover, the hot air is cooled, the temperature of the cold air is raised, the heated cold air is discharged out of the cabin cover through the external circulation air outlet channel, the cooled hot air is blown into the double-fed generator from the two positions of the first air outlet through hole and the second air outlet through hole of the internal circulation through the first internal circulation fan and the second internal circulation fan, and the driving end and the non-driving end of the double-fed generator are cooled simultaneously.
Drawings
Fig. 1 shows a schematic structural diagram of an air-to-air cooling system for a doubly-fed generator disclosed in an embodiment of the invention;
FIG. 2 is a schematic diagram showing the internal structure of an air-to-air cooling system for a doubly-fed generator disclosed in the embodiment of the invention;
FIG. 3 is a front view of an air-to-air cooling system for a doubly-fed generator as disclosed in an embodiment of the present invention;
FIG. 4 is a left side view of an air-to-air cooling system for a doubly-fed generator as disclosed in an embodiment of the present invention;
FIG. 5 is a schematic view showing the internal circulation airflow of an air-to-air cooling system for a doubly-fed generator according to an embodiment of the present invention;
FIG. 6 is a flow chart showing an external circulation airflow of an air-to-air cooling system for a doubly-fed generator according to an embodiment of the present invention;
wherein the reference numerals are specified as follows: 1. an external circulation fan; 2. an external circulation air inlet duct; 3. an external circulation air outlet channel; 4. a heat exchange core body; 5. a first internal circulation fan; 6. a second internal circulation fan; 7. a box body; 8. a base; 9. a doubly-fed generator.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1 to 6, the present invention provides an air-to-air cooling system for a doubly-fed generator, including: the heat exchange core body 4, the external circulation air inlet duct 2, the external circulation air outlet duct 3, the external circulation fan 1, the first internal circulation fan 5 and the second internal circulation fan 6 are arranged in the box body 7, the heat exchange core body 4, the external circulation air inlet duct 2 and the external circulation air outlet duct 3 are all arranged in the box body 7, the external circulation fan 1 is installed at the front end of the box body 7, the air inlet of the external circulation fan 1 is located outside the box body 7, the air outlet of the external circulation fan 1 is communicated with one end of the external circulation air inlet duct 2, the other end of the external circulation air inlet duct 2 is communicated with the inside of the heat exchange core body 4, one end of the external circulation air outlet duct 3 is communicated with the inside of the heat exchange core body 4, and the other end of the external circulation air outlet duct 3 is communicated with the rear end of the box body 7; the intermediate position of box 7 bottom has seted up the inner loop air inlet through-hole, the first air-out through-hole of inner loop has been seted up to box 7 bottom near left end department, box 7 bottom is close to right-hand member department and has seted up inner loop second air-out through-hole, first inner loop fan 5 is installed to the left end of box 7, the air intake of first inner loop fan 5 is located box 7, the first air-out through-hole intercommunication of air outlet and inner loop of first inner loop fan 5, second inner loop fan 6 is installed to the right-hand member of box 7, the air intake of second inner loop fan 6 is located box 7, the air outlet and the second air-out through-hole intercommunication of inner loop of second inner loop fan 6.
The air-air cooling system for the double-fed generator provided by the embodiment has the advantages that the base 8 is arranged at the bottom of the box body 7, the device is conveniently butted with the upper portion of the double-fed generator 9 through the base 8, namely, the inner circulation air inlet through hole, the inner circulation first air outlet through hole and the inner circulation second air outlet through hole are conveniently butted with the upper portion open air port, and circulation of inner circulation air is realized.
The air-air cooling system for the double-fed generator provided by the embodiment has the advantages that the number of the outer circulating fans 1 is two, and the efficiency of heat exchange of the box 7 when cold air enters the box 7 is improved by arranging the two outer circulating fans 1.
According to the air-air cooling system for the double-fed generator, the number of the first internal circulation fans 5 is two, and the circulation efficiency of air in the double-fed generator 9 is improved.
According to the air-air cooling system for the doubly-fed generator, the number of the second internal circulation fans 6 is two, and the circulation efficiency of air in the doubly-fed generator 9 is improved.
In a specific use: an air inlet of the outer circulation fan 1 is communicated with an air inlet of the cabin cover, the outer circulation air outlet channel 3 is communicated with an air outlet of the cabin cover, the inner circulation air inlet through hole, the inner circulation first air outlet through hole and the inner circulation second air outlet through hole are in butt joint with an upper opening of the double-fed generator 9, and the outer circulation fan 1 sucks cold air outside the cabin cover into the heat exchange core 4. The hot air in the doubly-fed generator 9 is sucked into the heat exchange core 4 by the first internal circulation fan 5 and the second internal circulation fan 6, and is subjected to heat exchange with the cold air sucked into the heat exchange core 4 from the outside of the cabin cover, the hot air is cooled, the temperature of the cold air is raised, the cold air after being raised is discharged out of the cabin cover through the external circulation air outlet channel 3, the hot air after being cooled is blown into the doubly-fed generator 9 from two positions of the first air outlet through hole and the second air outlet through hole of the internal circulation through the first internal circulation fan 5 and the second internal circulation fan 6, namely, the driving end and the non-driving end of the doubly-fed generator 9 are cooled simultaneously, and the cooling of the doubly-fed generator 9 is realized by the circulation.
In conclusion, the air-air cooling system for the double-fed generator, provided by the invention, solves the problem that the cooling requirement cannot be met due to too large volume of the existing air-air cooling system in the high-power double-fed generator in the prior art, especially under the condition that a main shaft of the generator is not provided with a cooling fan, and is reasonable in design and suitable for production, popularization and application. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. An air-to-air cooling system for a doubly-fed generator, comprising: a box body, a heat exchange core body, an external circulation air inlet channel, an external circulation air outlet channel, an external circulation fan, a first internal circulation fan and a second internal circulation fan,
the heat exchange core body, the external circulation air inlet channel and the external circulation air outlet channel are all arranged inside the box body, the external circulation fan is installed at the front end of the box body, the air inlet of the external circulation fan is located outside the box body, the air outlet of the external circulation fan is communicated with one end of the external circulation air inlet channel, the other end of the external circulation air inlet channel is communicated with the inside of the heat exchange core body, one end of the external circulation air outlet channel is communicated with the inside of the heat exchange core body, and the other end of the external circulation air outlet channel is communicated with the rear end of the box body;
the air inlet through-hole of inner loop has been seted up to the intermediate position of bottom half, the bottom half has been seted up near left end department and has been seted up the first air-out through-hole of inner loop, the bottom half is close to right-hand member department and has been seted up the second air-out through-hole of inner loop, install the left end of box first inner loop fan, the air intake of first inner loop fan is located in the box, the air outlet of first inner loop fan with the first air-out through-hole intercommunication of inner loop, install the right-hand member of box the second inner loop fan, the air intake of second inner loop fan is located the box, the air outlet of second inner loop fan with inner loop second air-out through-hole intercommunication.
2. The air-to-air cooling system for the doubly-fed generator of claim 1, wherein the bottom of the box body is provided with a base.
3. The air-to-air cooling system for the doubly-fed generator of claim 1, wherein there are two external circulation fans.
4. The air-to-air cooling system for the doubly-fed generator of claim 1, wherein there are two of said first internal circulation fans.
5. The air-to-air cooling system for doubly-fed generators of claim 1 wherein there are two of said second internal circulation fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193341.0A CN113497523A (en) | 2020-03-18 | 2020-03-18 | Air-air cooling system for double-fed generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193341.0A CN113497523A (en) | 2020-03-18 | 2020-03-18 | Air-air cooling system for double-fed generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113497523A true CN113497523A (en) | 2021-10-12 |
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ID=77993303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010193341.0A Pending CN113497523A (en) | 2020-03-18 | 2020-03-18 | Air-air cooling system for double-fed generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113497523A (en) |
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2020
- 2020-03-18 CN CN202010193341.0A patent/CN113497523A/en active Pending
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