CN205178768U - Large -scale brushless excitation motor cooling structure - Google Patents
Large -scale brushless excitation motor cooling structure Download PDFInfo
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- CN205178768U CN205178768U CN201521010569.2U CN201521010569U CN205178768U CN 205178768 U CN205178768 U CN 205178768U CN 201521010569 U CN201521010569 U CN 201521010569U CN 205178768 U CN205178768 U CN 205178768U
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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
Abstract
The utility model relates to a large -scale brushless excitation motor cooling structure, host computer and exciter have a solitary cooling space, the wind path parts are including takeover, outer tuber pipe, air -supply line, interior tuber pipe, induced duct, play tuber pipe. The air intake of wind path parts one end, air outlet let in from the bottom of host computer deep bead and end plate respectively, are divided into two the tunnel with the host computer wind path, and all the way for conventional interior wind path, a heat exchange is then carried out through the exciter wind path with the air of host computer lower part again in another way. The utility model discloses the method that the motor adopted host computer and exciter cooling structure to combine together has been solved host computer winding temperature and has been gone up the problem that the lower part difference in temperature is big and the exciter wind pressure is low, has good cooling effect.
Description
Technical field
The utility model relates to a kind of large-scale brushless excitation motor cooling structure.
Background technology
Brushless excitation motor is made up of brushless exciter and synchronous motor, it is the New-type electric machine be combined as a whole with power electronic technology, this type of electric motor starting performance is good, be easy to speed governing, electric network pollution is little, and avoid carbon brush and contact with slip ring and the various machinery that occurs and electric fault, be convenient to safeguard.Based on these advantages, at present in mine, the field of explosion such as oil, chemical industry is widely used.Special and people's the improving constantly property indices of operational environment due to motor, brushless excitation motor cooling problem more and more comes into one's own, and cooling effect is related to efficiency and the temperature rise of unit, has a strong impact on the security of operation of unit.Therefore, rational cooling structure has become in design of electrical motor the major issue needing solution badly.
Cooling structure is the key technology of large-scale brushless excitation motor, at present, large absolutely number main frame (motor) adopts the absolutely empty type of cooling to cool stators and rotators part, limit by installing space, cooler is placed in motor top usually, the core part of mainframe is very large, for preventing main frame axle stretch end different with the radiating effect of non-shaft stretching end winding, cooler is generally from middle air intake, two ends air-out, but because inlet and outlet is all on motor top, the winding temperature of motor lower portion is higher than upper temp, motor is larger, the temperature difference is larger, become one of key factor hindering brushless excitation motor large scale development.
From the development of brushless excitation motor, excitation structure has become wherein the part of core the most, and the quality of excitation structure directly has influence on performance and the running quality of synchronous machine.For improving the dynamic characteristic of brushless electric machine, general exciter chooses less short circuit ratio to improve the sensitivity of exciting current, shortens time constant.Less short circuit ratio exciter can be made to design more economical, reduced volume, weight reduction.But because exciter rotor and rotating rectifier dish are coaxial rotating parts, heat dissipation environment is severe, in turn limit the space that volume reduces.
Exciter aeration structure mainly contain cold from fan, he fans the types of cooling such as cold.Cold from fan is at motor both ends or one end provided with fan, is usually applicable to the exciter that rotating speed is high and exciting power is less, but reduces exciter efficiency, the corresponding noise and vibration adding motor; Much the lower and high power motor for rotating speed, adopt him to fan the cold type of cooling, but add external equipment.The object of two kinds of modes improves blast, overcomes windage, to provide enough air quantity cooled interior windings and other parts.Due to particularity and the complexity of main frame and exciter cooling condition in brushless excitation motor, prior art all effectively can not solve the shortcoming that the main frame winding temperature top and the bottom temperature difference is large and exciter blast is low.
Summary of the invention:
The purpose of this utility model is to provide the simple basis of a kind of structure, is easy to safeguard, the large-scale brushless excitation motor cooling structure that radiating efficiency is high.The technical solution of the utility model is: a kind of large-scale brushless excitation motor cooling structure, motor air channel is divided into exciter and main frame two parts, main frame wind path is divided into again main air road and Zhi Fenglu two, the type of cooling of air-out in the middle of the air intake of employing two ends, main air road, by the hollow cooler be arranged on above unit (8), fan (10) and the main frame auxiliary parts composition circulating ventilation structure thereof of pressure are provided, main frame two ends are cold wind import, air intake path out enters hollow cooler (8) afterwards and completes heat exchange in the middle part of motor, main frame end plate (9) has air port (18), one end of blast pipe (3) is connected with air port (18), blast pipe (3) other end is connected to outer airduct (2), outer airduct (2) is connected with adapter (1) again, a part of gas in main frame after heat exchange enters seat for exciting dynamo (15) by taking over (1), (15) have air inlet to seat for exciting dynamo, rotating rectifier dish (14) is placed in seat for exciting dynamo (15), the refrigerating gas entering seat for exciting dynamo (15) is divided into three roads to flow into exciter rear end, exciter back cover (11) has air outlet (16), induced duct (5) one end is connected with air outlet (16), the other end is connected with interior airduct (4), interior airduct (4) is connected with discharge pipe (6) again, discharge pipe (6) is connected with the air outlet (17) on main frame deep bead (7) through main frame end plate (9).
Operation principle of the present utility model: main frame wind path is divided into main air road and Zhi Fenglu two, the type of cooling of air-out in the middle of the air intake of employing two ends, main air road, the wind path parts other end is connected with discharge pipe with blast pipe.Seat for exciting dynamo has air intake, the gas entered from main frame bottom along blast pipe and the cold air of air intake converge, first rotating rectifier dish is cooled, then after dividing three tunnels to cool the parts in exciter along the air channel, back that muscle and seat for exciting dynamo form, air regulating board, rotor air gap, pass exciter back cover air outlet, enter into cooler through induced duct, interior airduct, discharge pipe, carry out heat exchange with cooler.The non-provided with fan of exciter itself and cooling blower, in order to provide enough cooling air quantities, the blast utilizing blast pipe and discharge pipe two ends main frame to provide, improves the pressure of exciter, to meet the requirement of driving air output.Due to exciter small volume, and inside has rotating rectifier dish, the stator and rotor sructure inter-air space little, the pressure loss that gas causes when flowing through these air ducts is larger, according to the flow velocity of fluid during design, the structure in the air channel, back that wind path cross section, muscle and support form and quantity and air regulating board structure thereof are in optimized selection.The air entering exciter from blast pipe is the cooling twice gas of main frame, is improve cooling effect, according to the needs of air quantity and temperature during design, optimizes and revises seat for exciting dynamo air-admitting surface.
Advantage of the present utility model:
The utility model improves product reliability of operation, is conducive to the raising of electric efficiency, reduces motor volume and weight.The technical solution of the utility model is: a kind of large-scale brushless excitation motor cooling structure, and main frame and exciter have independent cooling space, not in same cooling chamber, couple together by wind path parts, rotating rectifier dish and exciter one.Composition comprises hollow cooler, main frame deep bead, main frame end plate, rotating rectifier dish, seat for exciting dynamo, exciter back cover, air regulating board and wind path parts thereof.Described wind path parts comprise adapter, outer airduct, blast pipe, interior airduct, induced duct, discharge pipe.Air inlet, the air outlet of wind path parts one end pass into from the bottom of main frame deep bead and end plate respectively, be connected with the entrance end of aerial cooler, like this, main frame wind path is divided into two-way, one tunnel is that in conventional main frame, the air of main frame bottom is then carried out a heat exchange by exciter wind path by wind path another road again, makes the temperature rise of main frame top and the bottom winding more balanced.
The method that the utility model motor adopts main frame and exciter cooling structure to combine, solve the problem that the main frame winding temperature top and the bottom temperature difference is large and exciter blast is low, improve cooling effect, reduce motor volume, reduce draft loss, ensure that the safe and stable operation of motor, there is good Social and economic benef@.
Accompanying drawing explanation
Fig. 1 is utility model works schematic diagram
Fig. 2 is the right view of Fig. 1
Embodiment
The utility model as shown in Figure 1, a kind of large-scale brushless excitation motor cooling structure, motor air channel is divided into exciter and main frame two parts, main frame wind path is divided into again main air road and Zhi Fenglu two, the type of cooling of air-out in the middle of the air intake of employing two ends, main air road, by the hollow cooler 8 be arranged on above unit, fan 10 and the main frame auxiliary parts composition circulating ventilation structure thereof of pressure are provided, main frame two ends are cold wind import, air intake path out enters hollow cooler 8 afterwards and completes heat exchange in the middle part of motor, as shown in Figure 2, main frame end plate 9 has air port 18, one end of blast pipe 3 is connected with air port 18, blast pipe 3 other end is connected to outer airduct 2, outer airduct 2 is connected with adapter 1 again, a part of gas in main frame after heat exchange enters seat for exciting dynamo 15 by adapter 1, seat for exciting dynamo 15 there is air inlet, rotating rectifier dish 14 is placed in seat for exciting dynamo 15, the refrigerating gas entering seat for exciting dynamo 15 is divided into three roads to flow into exciter rear end, exciter back cover 11 has air outlet 16, induced duct 5 one end is connected with air outlet 16, as shown in Figure 2, the other end is connected with interior airduct 4, interior airduct 4 is connected with discharge pipe 6 again, discharge pipe 6 is connected with the air outlet 17 on main frame deep bead 7 through main frame end plate 9.
Enter cooling duct one tunnel of seat for exciting dynamo 15 as shown in Figure 1 through rotor air gap, another road at external wind pressure and rotating rectifier dish 14, through the air channel that seat for exciting dynamo 15 and muscle 13 are formed, the 3rd air holes of tunnel on air regulating board 12.
Motor air channel is divided into exciter and main frame two parts, and main frame wind path is divided into again main air road and Zhi Fenglu two.The type of cooling of air-out in the middle of the air intake of employing two ends, main air road, by the hollow cooler 8 be arranged on above unit, fan 10 and the main frame auxiliary parts composition circulating ventilation structure thereof of pressure are provided, cold wind is entered by main frame two ends respectively, and in the middle part of motor, out rear and hollow cooler 8 completes heat exchange.Lead end is substantially identical with the cooling condition of non-lead end, and both sides temperature contrast is less.Exciter wind path is incorporated to by Zhi Fenglu, main frame end plate 9 has position and the suitable air port 18 of size, one end of discharge pipe 3 is attached thereto, the other end is connected to outer airduct 2, outer airduct 2 is connected with adapter 1 again, and a part of gas in main frame after heat exchange thus path enters seat for exciting dynamo 15, and seat for exciting dynamo 15 has air inlet, first rotating rectifier dish 14 is cooled after this converges with cold air, be then divided into three tunnels.One tunnel is through rotor air gap, another road is under external wind pressure and rotating rectifier dish 14 act on, through the air channel that seat for exciting dynamo 15 and muscle 13 are formed, to exciter stator yoke, portion cools, air channel quantity and structure adjust as required, 3rd air holes of tunnel on air regulating board 12 is passed through, and on it, the corresponding adjustment of large smallest number of air holes is to meet the distribution of flow.Three transportation work style roads are keys of aeration structure, and the pressure loss caused when gas flows through these air channels is large, and it designs is carry out structure and quantity selection according to the flow rates demand of fluid.After three transportation work styles complete the cooling of exciter inner part, enter exciter rear end, exciter back cover 11 has air outlet 16, induced duct 5 one end is coupled, the other end is connected with interior airduct 4, interior airduct 4 is connected with discharge pipe 6 again, and discharge pipe 6 is connected with the air outlet 17 on main frame deep bead 7 through main frame end plate 9.Like this, the gas in exciter, the gas and the hollow cooler 8 that comprise main frame bottom complete heat exchange.Namely main frame lower gas has carried out cooling twice by exciter passage again, strengthens the flowing of lower gas, solves the shortcoming that the main frame top and the bottom temperature difference is large.Blast pipe 3 and discharge pipe 6 are connected with the air outlet 17 on main frame deep bead 7 with the air port 18 on main frame end plate 9 respectively, the blast of host machine part is introduced exciter, solves the problem that exciter blast is low.Outer airduct 2, blast pipe 3, interior airduct 4, discharge pipe 6 are not only cooling air duct part, and also play a supportive role to exciter, Advantageous materials selects rectangular steel tube.For ensureing the seal of cooling structure, the connection sealing between pipeline will be got well, the flange that can adopt welding manner or be easy to dismantle add sealing gasket conjunction mode.Air outlet 17 on main frame deep bead 7 and the position, air port 18 on main frame end plate 9 and size are determined according to flow.
Claims (2)
1. one kind large-scale brushless excitation motor cooling structure, it is characterized in that: motor air channel is divided into exciter and main frame two parts, main frame wind path is divided into again main air road and Zhi Fenglu two, the type of cooling of air-out in the middle of the air intake of employing two ends, main air road, by the hollow cooler be arranged on above unit (8), fan (10) and the main frame auxiliary parts composition circulating ventilation structure thereof of pressure are provided, main frame two ends are cold wind import, air intake path out enters hollow cooler (8) afterwards and completes heat exchange in the middle part of motor, main frame end plate (9) has air port (18), one end of blast pipe (3) is connected with air port (18), blast pipe (3) other end is connected to outer airduct (2), outer airduct (2) is connected with adapter (1) again, a part of gas in main frame after heat exchange enters seat for exciting dynamo (15) by taking over (1), (15) have air inlet to seat for exciting dynamo, rotating rectifier dish (14) is placed in seat for exciting dynamo (15), the refrigerating gas entering seat for exciting dynamo (15) is divided into three roads to flow into exciter rear end, exciter back cover (11) has air outlet (16), induced duct (5) one end is connected with air outlet (16), the other end is connected with interior airduct (4), interior airduct (4) is connected with discharge pipe (6) again, discharge pipe (6) is connected with the air outlet (17) on main frame deep bead (7) through main frame end plate (9).
2. the large-scale brushless excitation motor cooling structure of one according to claim 1, it is characterized in that: enter cooling duct one tunnel of seat for exciting dynamo (15) through rotor air gap, another road is at external wind pressure and rotating rectifier dish (14), through the air channel that seat for exciting dynamo (15) and muscle (13) are formed, the air holes of the 3rd tunnel on air regulating board (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201521010569.2U CN205178768U (en) | 2015-12-08 | 2015-12-08 | Large -scale brushless excitation motor cooling structure |
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| CN201521010569.2U CN205178768U (en) | 2015-12-08 | 2015-12-08 | Large -scale brushless excitation motor cooling structure |
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| CN205178768U true CN205178768U (en) | 2016-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110954A (en) * | 2017-12-14 | 2018-06-01 | 卧龙电气集团股份有限公司 | A kind of cooling system of positive voltage type anti-explosion generator |
| CN108199530A (en) * | 2018-01-11 | 2018-06-22 | 西华大学 | A kind of salient pole synchronous electric machine confluence annular lead wire cooling structure |
| CN108736650A (en) * | 2018-07-12 | 2018-11-02 | 哈尔滨电气动力装备有限公司 | Side water cool ventilation cooling structure for large-scale dc motor |
| CN111817522A (en) * | 2020-06-29 | 2020-10-23 | 山东齐鲁电机制造有限公司 | Three-machine coaxial excitation structure |
-
2015
- 2015-12-08 CN CN201521010569.2U patent/CN205178768U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110954A (en) * | 2017-12-14 | 2018-06-01 | 卧龙电气集团股份有限公司 | A kind of cooling system of positive voltage type anti-explosion generator |
| CN108199530A (en) * | 2018-01-11 | 2018-06-22 | 西华大学 | A kind of salient pole synchronous electric machine confluence annular lead wire cooling structure |
| CN108199530B (en) * | 2018-01-11 | 2023-07-14 | 西华大学 | Annular lead cooling structure of salient pole synchronous motor confluence |
| CN108736650A (en) * | 2018-07-12 | 2018-11-02 | 哈尔滨电气动力装备有限公司 | Side water cool ventilation cooling structure for large-scale dc motor |
| CN108736650B (en) * | 2018-07-12 | 2023-12-26 | 哈尔滨电气动力装备有限公司 | Side water-cooling ventilation cooling structure for large direct-current motor |
| CN111817522A (en) * | 2020-06-29 | 2020-10-23 | 山东齐鲁电机制造有限公司 | Three-machine coaxial excitation structure |
| CN111817522B (en) * | 2020-06-29 | 2023-06-30 | 山东齐鲁电机制造有限公司 | Coaxial excitation structure of three machines |
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