Wind generating set, electromagnetic device and iron core heat exchange device
阅读说明：本技术 风力发电机组、电磁装置及铁心的换热装置 (Wind generating set, electromagnetic device and iron core heat exchange device ) 是由 马盛骏 于 2018-08-31 设计创作，主要内容包括：本发明公开一种风力发电机组、电磁装置及铁心的换热装置,铁心的换热装置,包括能够通入气流的喷洒器,所述喷洒器设有喷射孔,所述气流能够经所述喷射孔喷射至所述铁心的端部。喷洒器在铁心的端部进行冷气流或热气流的喷射,从而在铁心的端部构造冷却、干燥的环境,有利于铁心的散热,也有利于绕组端部的绝缘性能的维护,包括绕组自身的绝缘,以及绕组与铁心之间的绝缘,还有利于磁极及其防护覆层的保护。(The invention discloses a wind generating set, an electromagnetic device and a heat exchange device of an iron core. The sprinkler sprays cold air flow or hot air flow at the end of the iron core, so that a cooling and drying environment is constructed at the end of the iron core, the heat dissipation of the iron core is facilitated, the maintenance of the insulation performance of the end part of the winding is also facilitated, the insulation of the winding and the insulation between the winding and the iron core are included, and the protection of a magnetic pole and a protective coating of the magnetic pole is facilitated.)
1. The heat exchange device of the iron core (204) is characterized by comprising a sprayer capable of introducing air flow, wherein the sprayer is provided with an injection hole, and the air flow can be sprayed to the end part of the iron core (204) through the injection hole.
2. The heat exchanger of the iron core (204) according to claim 1, wherein said sprinkler comprises an annular sprinkler tube (20) fitted to the annular shape of said iron core (204), said annular sprinkler tube (20) being provided at an end portion of said iron core (204), and a plurality of said injection holes being provided along a circumferential direction of said annular sprinkler tube (20).
3. A heat exchanging device of a core (204) according to claim 2, characterized in that said annular sprinkling pipe (20) is mounted to an end surface of said core (204).
4. A heat exchange device of a core (204) according to claim 3, characterized in that the winding (203) is disposed in the slot (204b) of the core (204), the end face of the core (204) is provided with an annular busbar (212), and the joint of the winding (203) is connected to the busbar (212);
the annular spraying pipe (20) is located on the inner side or the outer side of the busbar (212) or is axially opposite to the busbar (212), and the annular spraying pipe (20) comprises a spraying hole capable of spraying airflow to the busbar (212).
5. A heat exchanger for an iron core (204) as claimed in claim 2, wherein said iron core (204) has a winding (203) disposed in a slot (204b), said winding (203) is wound around an end of said iron core (204) to form a winding nose portion (203a), and said annular spraying tube (20) is inserted into all of said winding nose portions (203a) at an end of said iron core (204).
6. The heat exchange device of the iron core (204) according to claim 2, characterized in that more than two air inlets are uniformly distributed on the annular spraying pipe (20) in the circumferential direction for the air to flow into;
be equipped with shunt tubes (20a) in annular spraying pipe (20), shunt tubes (20a) correspond to airflow inlet's position, the air current that lets in gets into earlier shunt tubes (20a), shunt tubes (20a) are followed both ends and are jetted the air current to the guide the air current is followed annular spraying pipe (20)'s circumference flows, again from the jet orifice blowout.
7. A heat exchanging device for a core (204) according to any of claims 2-6, characterized in that said injection holes are provided at the inner side of said annular spraying tube (20), or at the inner side and the middle part of said annular spraying tube (20), and no injection holes are provided at the outer side of said annular spraying tube (20).
8. Heat exchanging unit for a core (204) according to any of claims 1-6, characterised in that said injection holes are capable of injection in the radial and/or axial direction of said core (204).
9. The heat exchanging device of a core (204) as recited in claim 1, wherein said core (204) is provided with a plurality of first core fasteners (210) axially tensioning said core (204), ends of said first core fasteners (210) being provided with said injection orifices, said first core fasteners (210) being said sprinkler.
10. The heat exchanging device of a core (204) as recited in claim 9, wherein said first core fastener (210) is provided with an air flow passage (210t) extending axially through at least one end, air entering said air flow passage (210t) being ejected from at least one end, an end of said air flow passage (210t) capable of ejecting air being said ejection hole.
11. The heat exchanging device of a core (204) of claim 10, wherein said first core fastener (210) is a stud, said air flow channel (210t) extends through said stud, and said injection hole is a portion of said air flow channel (210t) at a head of said stud.
12. The heat exchanging device of a core (204) as recited in claim 10, further comprising a sidewall channel (211), said sidewall channel (211) extending through a sidewall of said core fastener (210) to communicate with said air flow channel (210t), air flowing through said sidewall channel (211) into said air flow channel (210t), said air flowing in from said sidewall channel (211).
13. The heat exchanging device of a core (204) as recited in claim 12, wherein said air flow channel (210t) extends axially through both ends of said first core fastener (210), said air flow exiting both ends of said air flow channel (210 t).
14. The heat exchanging arrangement for the core (204) of claim 12, further comprising a recovery channel (210h), said air flow channel (210t) extending through one end of said first core fastener (210), said recovery channel (210h) extending through the other end of said first core fastener (210);
the side wall channel (211) comprises an inlet channel and an outlet channel which are isolated from each other, the airflow enters the airflow channel (210t) from the inlet channel and is sprayed out from the end part of the airflow channel (210t), the sprayed airflow enters from the end part of the recovery channel (210h) after external heat exchange, and flows out from the recovery channel (210h) and the outlet channel to be recovered.
15. A heat exchanging arrangement for a core (204) as claimed in claim 13 or 14, characterized in that said air flow channels (210t) comprise first (210a) and second (210b) isolated channels, one for the passage of cold air and the other for the passage of hot air.
16. A heat exchange device of a core (204) as recited in claim 15, further comprising a vortex separator (10), said vortex separator (10) comprising a nozzle (102) and a vortex separator tube (101), said vortex separator tube (101) comprising a vortex chamber (101a) and a cold end tube segment (101c) and a hot end tube segment (101b) respectively located at two ends of said vortex chamber (101 a); the spray pipe (102) is communicated with the vortex chamber (101a), and compressed air flows through the spray pipe (102) to form a spiral air flow and flows in along the tangential direction of the vortex chamber (101 a);
the sectional area of the cold end pipe section (101c) is smaller than that of the vortex chamber (101a), and the sectional area of the hot end pipe section (101b) is equal to or larger than that of the vortex chamber (101 a);
a valve with a valve port is arranged in the hot end pipe section (101b), the valve is provided with a conical surface, and after the spiral airflow enters the vortex separation pipe (101), the external air of the spiral airflow flows to the valve port and is gradually heated to be hot airflow and then flows out along the valve port; the middle air of the spiral air flow reversely flows back after flowing through the conical surface of the valve to be cooled to be cold air flow, and flows out of the cold end pipe section (101 c);
the cold air flow and the hot air flow can be respectively led into the first channel (210a) and the second channel (210 b).
17. A heat exchanging arrangement for a core (204) according to claim 16, characterized in that said core (204) is fastened to a core support (208), said vortex separator (10) is arranged inside said core support (208), and a hot or cold air flow of said vortex separator (10) flows into said side wall channel (211); the side wall channel (211) simultaneously penetrates through the side wall of the iron core bracket (208), leads into the iron core (204), and penetrates through the side wall of the first iron core fastener (210) to be communicated with the air flow channel (210 t).
18. A heat exchange device of a core (204) as recited in any of claims 1-6 and 9-14, wherein said heat exchange device further comprises a vortex separator (10), said vortex separator (10) comprises a nozzle (102) and a vortex separation tube (101), said vortex separation tube (101) comprises a vortex chamber (101a) and a cold end tube segment (101c) and a hot end tube segment (101b) respectively located at two ends of said vortex chamber (101 a); the spray pipe (102) is communicated with the vortex chamber (101a), and compressed air flows through the spray pipe (102) to form a spiral air flow and flows in along the tangential direction of the vortex chamber (101 a);
the sectional area of the cold end pipe section (101c) is smaller than that of the vortex chamber (101a), and the sectional area of the hot end pipe section (101b) is equal to or larger than that of the vortex chamber (101 a);
a valve with a valve port is arranged in the hot end pipe section (101b), the valve is provided with a conical surface, and after the spiral airflow enters the vortex separation pipe (101), the external air of the spiral airflow flows to the valve port and is gradually heated to be hot airflow and then flows out along the valve port; the middle air of the spiral air flow reversely flows back after flowing through the conical surface of the valve to be cooled to be cold air flow, and flows out of the cold end pipe section (101 c);
the hot air flow or the cold air flow is the air flow which is introduced into the sprayer.
19. A heat exchange device of an iron core (204) as claimed in claim 18, wherein one end of said vortex chamber (101a) is provided with a through hole, and a tube body of said cold end tube segment (101c) is communicated with said through hole; the vortex chamber (101a) and the hot end pipe section (101b) are integrally arranged in an equal diameter mode.
20. A heat exchange device of a core (204) according to claim 19, wherein said valve comprises a conical throttling element (103), a conical end of said throttling element (103) faces said cold end pipe segment (101c), said throttling element (103) is located in the middle of said hot end pipe segment (101b), and an annular gap formed between said throttling element (103) and an inner wall of said hot end pipe segment (101b) is said valve port; and the axis of the cold end pipe section (101c) is coincident with the axis of the throttling element (103).
21. A heat exchanging arrangement for a core (204) according to claim 18, characterized in that said core (204) is fastened to a core holder (208), and that said vortex separator (10) is arranged inside said core holder (208).
22. Electromagnetic device comprising a core (204), characterized in that it further comprises heat exchanging means of the core (204), said heat exchanging means being a heat exchanging means of the core (204) according to any of claims 1-21.
23. The electromagnetic device according to claim 22, wherein the electromagnetic device is a motor or a transformer, a reactor.
24. Wind power plant comprising a generator comprising a core (204), characterized in that the wind power plant further comprises a heat exchanging device of the core (204) according to any of claims 1-21.
25. The wind power plant of claim 24, wherein the heat exchanged air flow injected into the end of the core (204) is delivered to at least one of:
a hub;
a blade inner leading edge;
a pitch bearing;
a wind measuring support at the upper part of the engine room;
and a yaw bearing.
Technical Field
The invention relates to the technical field of electromagnetic devices, in particular to a wind generating set, an electromagnetic device and a heat exchange device of an iron core
Background
The iron core is an important component of a magnetic circuit and is applied to electric appliance parts such as motors, transformers and the like. Taking the motor as an example, the stator core, the rotor core and the air gap between the stator and the rotor constitute a magnetic circuit of the motor. In an induction machine, magnetic flux in a stator core is alternating magnetic flux, and thus core loss, called core loss, occurs. The iron loss comprises two parts: hysteresis losses and eddy current losses. Hysteresis loss is energy loss due to the constant change in orientation of magnetic molecules during alternating magnetization of the core. The eddy current loss is due to resistance loss caused by eddy current generated by the core when it is alternately magnetized.
The hysteresis loss and the eddy current loss are part of a heat source of the motor, and the other part of the heat source is generated when current flows through a motor winding. From the perspective of heat transfer, the heat source described above constitutes a heat source when the motor is operating.
Referring to fig. 1-2, fig. 1 is a schematic layout diagram of an air dividing wall type heat exchanger for cooling the interior of a generator; fig. 2 is an exploded schematic view of the intermediate wall heat exchanger of fig. 1.
As shown in fig. 1, the right side of the generator 500 'is connected with the impeller 600', the left side is provided with the nacelle 100 ', and the cabin 100' is provided with the dividing wall type heat exchanger 300 ', and particularly arranged at the tail part of the nacelle 300'. The left side of the dividing wall type heat exchanger 300 ' is provided with an internal circulation induced air fan 202 ', the internal circulation induced air fan 202 ' is driven by an internal circulation driving motor 201 ', and the internal circulation induced air flow guiding-out conveying pipeline 400 ' is also arranged, and hot air flow generated by heat production of the generator 500 ' is guided out of the conveying pipeline 400 ' to enter a heat exchanger core body of the dividing wall type heat exchanger 300 ' along the internal circulation induced air flow under the action of the internal circulation induced air fan 202 '.
The dividing wall type heat exchanger 100 'is further provided with an external circulation induced air fan 102', the external circulation induced air fan 102 'is driven by an external circulation driving motor 101', the external circulation induced air fan 102 'introduces natural environment air flow into a heat exchange core of the dividing wall type heat exchanger 300' (two sides of a core thin plate are respectively contacted with flowing internal circulation air flow and external circulation air flow), and then the external circulation air flow after heat exchange flows out of the engine room 100 ', and an external circulation air outlet 103' connected with the outside is shown in fig. 1. The internal circulation air flow is led out of the dividing wall type heat exchanger 300' after being cooled and cooled, and is diffused in the tail space of the cabin in 360 degrees through the working, pressurizing and outlet of the impeller of the ventilator.
In fig. 2, when the internal circulation gas flow is introduced, an internal circulation confluence cavity 203 'is further provided between the dividing wall type heat exchanger 300' and the internal circulation gas flow outlet transport pipeline 400 ', and internal circulation gas
In fig. 1, a cooling airflow
The internal circulation fluid diffused in the nacelle 300 ' is throttled by the
With continued reference to fig. 4-6, fig. 4 is a schematic diagram of the assembled motor winding and its ferromagnetic components; fig. 5 is a partial schematic view of the winding 020 of fig. 3 disposed in the
The core of the electrical machine comprises a plurality of
Radial ventilation systems are mostly adopted in large and medium-sized hydraulic generators. Specifically, a certain number of
The material of the sector punching sheet is a pickled steel plate with the thickness of 0.35-0.5 mm generally. The surface of the acid-washed steel plate is required to be flat and smooth and must not have oxidized scale or other stains. The fan-shaped punching sheet needs to be in spot welding with the ventilation channel steel, a dovetail groove is formed in the radial inner end of the fan-shaped punching sheet, and the bushing ring is located at the dovetail groove of the fan-shaped punching sheet.
As shown in fig. 6, when the
For the permanent magnet direct-drive wind generating set, when the magnetic poles on two sides of the air gap of the generator and the surface of the stator core are cooled by adopting air in the external natural environment, the cooling effect is better. However, the air flow in the natural environment often carries various forms of substances, which flow through the internal space of the motor, and they are gas, vapor, liquid, and solid multiphase flows (among them, air, water vapor, rain, snow, salt fog, sand dust, floccules, etc.). They can cause the deterioration of the insulation performance, which results in the deterioration of the electrical and mechanical insulation performance of the motor, the reduction of the residual pressure resistance level and the service life, and finally the damage of the insulation, the damp and heat resistance of the protective coating on the surface of the permanent magnetic pole, and the peeling between the protective coating and the surface of the permanent magnetic pole after the damp and heat expansion and even the rusting of the magnetic pole.
When the closed type circulating cooling motor is adopted (internal circulating airflow is adopted), although the risk that the internal organization of the motor is corroded by rainwater can be avoided, the reliability of electrical insulation and magnetic pole protection is improved. But the loss of the inner circulation airflow along the transmission process and the local resistance is large, and the heat exchange rate of the heat production link in the motor is restricted, so that the temperature rise of the key organization in the motor, namely the insulation structure, is high, and the performance stability guarantee of the permanent magnet magnetic pole is threatened.
Disclosure of Invention
The invention provides a heat exchange device of an iron core, which comprises a sprayer capable of introducing air flow, wherein the sprayer is provided with an injection hole, and the air flow can be injected to the end part of the iron core through the injection hole.
The sprinkler sprays cold air flow or hot air flow at the end of the iron core, so that a cooling and drying environment is constructed at the end of the iron core, the heat dissipation of the iron core is facilitated, the maintenance of the insulation performance of the end part of the winding is also facilitated, the insulation of the winding and the insulation between the winding and the iron core are included, and the protection of a magnetic pole and a protective coating of the magnetic pole is facilitated.
Optionally, the sprinkler includes an annular sprinkler pipe fitted to the annular shape of the iron core, the annular sprinkler pipe is provided at an end of the iron core, and a plurality of the injection holes are provided along a circumferential direction of the annular sprinkler pipe.
Optionally, the annular sprinkling pipe is mounted on an end face of the iron core.
Optionally, a winding is disposed in a slot of the iron core, an annular busbar is disposed on an end surface of the iron core, and a joint of the winding is connected to the busbar;
the annular spraying pipe is positioned on the inner side or the outer side of the busbar or is axially opposite to the busbar, and the annular spraying pipe comprises a spraying hole capable of spraying airflow to the busbar.
Optionally, a winding is placed in the slot of the iron core, the winding is bent at the end of the iron core to form a winding nose, and the annular spray pipe is inserted into the through holes of all the winding noses at one end of the iron core.
Optionally, more than two airflow inlets are uniformly distributed on the circumferential direction of the annular spraying pipe, so that the airflow can be introduced;
the annular spraying pipe is internally provided with a flow dividing pipe, the flow dividing pipe corresponds to the position of the airflow inlet, the introduced airflow firstly enters the flow dividing pipe, and the flow dividing pipe sprays the airflow from two ends so as to guide the airflow to flow along the circumferential direction of the annular spraying pipe and then spray from the spray holes.
Optionally, the injection holes are arranged on the inner side of the annular spraying pipe, or arranged on the inner side and the middle part of the annular spraying pipe, and no injection hole is arranged on the outer side of the annular spraying pipe.
Alternatively, the injection holes may be injected in a radial direction and/or an axial direction of the core.
Optionally, the iron core is provided with a plurality of first iron core fasteners for axially tensioning the iron core, the end of the first iron core fastener is provided with the injection hole, and the first iron core fastener is the sprinkler.
Optionally, the first core fastener is provided with an airflow channel extending axially and penetrating at least one end, the airflow entering the airflow channel is ejected from at least one end, and the end of the airflow channel capable of ejecting the airflow is the ejection hole.
Optionally, the first core fastener is a stud bolt, the air flow passage passes through the stud bolt, and the injection hole is a portion of the air flow passage located at a head portion of the stud bolt.
Optionally, a side wall channel is further provided, the side wall channel penetrates through a side wall of the core fastener to communicate with the airflow channel, airflow enters the airflow channel through the side wall channel, and the airflow enters from the side wall channel.
Optionally, the air flow channel axially penetrates through both ends of the first core fastener, and the air flow is ejected from both ends of the air flow channel.
Optionally, the iron core fixing device further comprises a recovery channel, wherein the air flow channel penetrates through one end of the first iron core fixing device, and the recovery channel penetrates through the other end of the first iron core fixing device;
the side wall channel comprises an inlet channel and an outlet channel which are mutually isolated, the airflow enters the airflow channel from the inlet channel and is sprayed out from the end part of the airflow channel, the sprayed airflow enters from the end part of the recovery channel after external heat exchange and flows out through the recovery channel and the outlet channel to be recovered.
Optionally, the airflow channel comprises a first channel and a second channel which are separated from each other, wherein one channel is used for introducing cold airflow, and the other channel is used for introducing hot airflow.
Optionally, the heat exchange device further comprises a vortex separator, the vortex separator comprises a spray pipe and a vortex separation pipe, and the vortex separation pipe comprises a vortex chamber and a cold end pipe section and a hot end pipe section which are respectively located at two ends of the vortex chamber; the spray pipe is communicated with the vortex chamber, and compressed air flows through the spray pipe to form spiral airflow and flows in along the tangential direction of the vortex chamber;
the sectional area of the cold end pipe section is smaller than that of the vortex chamber, and the sectional area of the hot end pipe section is equal to or larger than that of the vortex chamber;
a valve with a valve port is arranged in the hot end pipe section, the valve is provided with a conical surface, and after the spiral airflow enters the vortex separation pipe, the external air of the spiral airflow flows to the valve port and is gradually heated to be hot airflow, and then the hot airflow flows out along the valve port; the middle air of the spiral air flow reversely flows back after flowing through the conical surface of the valve to be cooled into cold air flow, and flows out of the cold end pipe section;
the cold air flow and the hot air flow can be respectively introduced into the first channel and the second channel.
Optionally, the core is fastened to a core support, the vortex separator is arranged inside the core support, and hot air flow or cold air flow of the vortex separator flows into the side wall channel; the side wall channel simultaneously penetrates through the side wall of the iron core support, is communicated with the iron core, and penetrates through the side wall of the first iron core fastener to be communicated with the airflow channel.
Optionally, the heat exchange device further comprises a vortex separator, the vortex separator comprises a spray pipe and a vortex separation pipe, and the vortex separation pipe comprises a vortex chamber and a cold end pipe section and a hot end pipe section which are respectively located at two ends of the vortex chamber; the spray pipe is communicated with the vortex chamber, and compressed air flows through the spray pipe to form spiral airflow and flows in along the tangential direction of the vortex chamber;
the sectional area of the cold end pipe section is smaller than that of the vortex chamber, and the sectional area of the hot end pipe section is equal to or larger than that of the vortex chamber;
a valve with a valve port is arranged in the hot end pipe section, the valve is provided with a conical surface, and after the spiral airflow enters the vortex separation pipe, the external air of the spiral airflow flows to the valve port and is gradually heated to be hot airflow, and then the hot airflow flows out along the valve port; the middle air of the spiral air flow reversely flows back after flowing through the conical surface of the valve to be cooled into cold air flow, and flows out of the cold end pipe section;
the hot air flow or the cold air flow is the air flow which is introduced into the sprayer.
Optionally, a through hole is formed in one end of the vortex chamber, and a pipe body of the cold end pipe section is communicated with the through hole; the vortex chamber and the hot end pipe section are integrally arranged in an equal diameter mode.
Optionally, the valve includes a conical throttling element, a conical end of the throttling element faces the cold end pipe section, the throttling element is located in the middle of the hot end pipe section, and an annular gap formed between the throttling element and the inner wall of the hot end pipe section is the valve port; and the axis of the cold end pipe section is superposed with the axis of the throttling element.
Optionally, the core is fastened to a core support, and the eddy current separator is provided inside the core support.
The invention also provides an electromagnetic device, which comprises an iron core and a heat exchange device of the iron core, wherein the heat exchange device is the iron core heat exchange device of any one of the above parts.
Optionally, the electromagnetic device is a motor or a transformer, or a reactor.
The invention also provides a wind generating set which comprises a generator, wherein the generator comprises an iron core, and the wind generating set also comprises any one of the iron core heat exchange devices.
Optionally, the air flow after being sprayed to the end of the iron core and exchanging heat is conveyed to at least one of the following:
a hub;
a blade inner leading edge;
a pitch bearing;
a wind measuring support at the upper part of the engine room;
and a yaw bearing.
The electromagnetic device and the wind generating set comprise the iron core heat exchange device, and the technical effects are the same.
Drawings
FIG. 1 is a view of the joint of the whole machine in which an air dividing wall type heat exchanger cools the interior of a generator;
FIG. 2 is an exploded schematic view of the recuperator of FIG. 1;
FIG. 3 is a schematic view of the cooling airflow inlet aperture plate of FIG. 1;
FIG. 4 is a schematic diagram of the assembled ferromagnetic components of the motor winding;
FIG. 5 is a partial schematic view of the windings of FIG. 4 disposed in open slots;
FIG. 6 is a schematic view of a cooling ventilation channel running through in the radial direction formed in an electric machine core;
FIG. 7 is a schematic view of the cooling air flow paths associated with the radial cooling ventilation slots of the generator and the recuperator;
FIG. 8 is a schematic view of the core mated with the rotor;
FIG. 9 is a partial view of the rotor of FIG. 8;
fig. 10 is a schematic view of a first embodiment of a heat exchange device of an iron core according to the present invention;
FIG. 11 is a schematic view of an annular spray tube disposed on an end face of a core;
FIG. 12 is a diagram showing the basic structure of a vortex separator and the overall temperature separation operation of the gas flow;
FIG. 13 is a flow cross-sectional view of the nozzle flow passage of FIG. 12;
FIG. 14 is a schematic view of the internal flow field, thermal energy transfer within the vortex separator element of the core of FIG. 12;
FIG. 15 is a schematic diagram comparing free and forced vortices;
FIG. 16 is a schematic representation of the overall temperature separation operation within the vortex separator of FIG. 12 based on a thermodynamic temperature-entropy (T-S) diagram;
FIG. 17 is a schematic view of a second embodiment of a heat exchange unit for an iron core according to the present invention, wherein a ring-shaped spray tube is passed through the perforations of the winding noses;
FIG. 18 is a schematic view of the annular spray tube of FIG. 17;
FIG. 19 is a schematic view of the annular spray tube of FIG. 18 passing through a portion of the winding nose;
FIG. 20 is a schematic view of the gas flow supply apparatus of FIG. 17;
fig. 21 is a schematic view of a third embodiment of a heat exchange device for an iron core according to the present invention;
FIG. 22 is a view taken along line A-A of FIG. 21;
FIG. 23 is a cross-sectional view of the first core fastener of FIG. 21;
FIG. 24 is a schematic view of the air jet principle created by a plurality of first core fasteners;
fig. 25 is a schematic view of a fourth embodiment of a heat exchange device for an iron core according to the present invention;
FIG. 26 is a view taken along line B-B of FIG. 25;
FIG. 27 is a cross-sectional view of the first core fastener of FIG. 24;
fig. 28 is a schematic view of the air jet principle formed by a plurality of first core fasteners.
In fig. 1-7, the reference numerals are illustrated as follows:
100 ' cabin, 101 ' external circulation driving motor, 102 ' external circulation induced draft fan, 103 ' external circulation air exhaust port, 104 ' external circulation induced draft fan inlet connecting section, 201 ' internal circulation driving motor, 202 ' internal circulation induced draft fan, 203 ' internal circulation confluence cavity and 204 ' external circulation induced draft fan inlet connecting section;
300' dividing wall type heat exchanger; 400' leading out a conveying pipe of the internal circulation airflow; 500 ' generator, 500a ' cooling airflow inlet orifice, 500b ' inlet orifice;
600' impeller;
010 lamination, 010a tooth part, 010b open slot and 010 b' winding slot;
030 structural support, 040 cooling ventilation channel, 050 hot air leading-out junction station, 060 junction station and 070 junction channel;
in fig. 8-28, the reference numerals are illustrated as follows:
200 generators, 201 magnetic yokes, 202 magnetic poles, 202a pressing strips, 203 windings and 203a winding noses;
204 cores, 204a teeth, 204b slots;
205 radial cooling channels, 206 slot wedges, 207 second core fasteners, 208 core mounts, 209 tooth press plates, 210 first core fasteners, 210t airflow channels, 210a first channels, 210b second channels, 210h recovery channels; 211 side wall channels, 212 bus bars, 213 coamings, 214 end cover sealing rings and 215 rotor end covers;
10 vortex separators, 101 vortex separation tubes, 101a vortex chambers, 101a1 end plates, 101b hot end tube sections, 101c cold end tube sections, 101d cold ends, 101e hot ends, 102 spray tubes and 103 throttling elements;
20 annular spray pipes, 20a shunt pipes;
20b connecting pipe, 40 cold air flow main pipe, 401 branching pipe and 50 hot air flow collecting pipe;
60 air filter, 70 compressor, air gap a and s gap.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The iron core heat exchange device comprises the sprayer capable of introducing air flow, wherein the air flow can be cold air flow or hot air flow, the sprayer is provided with the jet holes, and the air flow introduced into the sprayer can be sprayed to the end part of the iron core through the jet holes so as to cool and dry the end part of the iron core. The method comprises the following specific steps: