CN104578595A - Cooling system of flywheel energy storage device - Google Patents
Cooling system of flywheel energy storage device Download PDFInfo
- Publication number
- CN104578595A CN104578595A CN201510066959.XA CN201510066959A CN104578595A CN 104578595 A CN104578595 A CN 104578595A CN 201510066959 A CN201510066959 A CN 201510066959A CN 104578595 A CN104578595 A CN 104578595A
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- Prior art keywords
- oil
- flywheel
- bearing
- cooling system
- chamber
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
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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
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/315—Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
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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
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/02—Special physical effects, e.g. nature of damping effects temperature-related
- F16F2222/025—Cooling
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The invention discloses a cooling system of a flywheel energy storage device. The flywheel energy storage device consists of a shell and an internal disc-type motor, wherein the shell has a vacuum sealing structure; an upper oil cavity and a lower oil cavity are respectively arranged at the upper part and lower part of the shell; the shell internally comprises at least one set of flywheel; a center shaft of each flywheel is a hollow mandrel, and an axle hole is formed in the center of the center shaft and is communicated with the upper oil cavity and the lower oil cavity; an oil tank is arranged outside the shell; the oil tank is communicated with the upper oil cavity by an upper oil pipe and is communicated with the lower oil cavity by an oil return pipe; the oil return pipe is provided with a third valve, an oil pump and a radiator. The cooling system can be used for cooling a rotor by the axle hole, so that a great deal of heat of the rotor which rotates at a high speed can be taken away in time, and safe and stable operation of the flywheel energy storage device is guaranteed. An upper bearing, a lower bearing and a stator disc are cooled in time by part of cooling oil, and the bearings can be lubricated, so that the reliable work of key parts can be guaranteed, and the defects of cavitation and the like of a pump caused by low pressure can be avoided.
Description
Technical field
The present invention relates to field of electrical equipment, especially a kind of cooling system of flywheel accumulator.
Background technology
Flywheel energy storage system, as a kind of substitute products of chemical cell and ultracapacitor, has that the life-span is long, maintenance is little, high efficiency and a high-power advantage.Flywheel energy storage relies on the flywheel rotor inertia rotated that electric energy is converted to kinetic energy storage, realizes uninterrupted power supply supply in the event of a loss of power.During the long-term High Rotation Speed of flywheel, the caloric value of rotor is comparatively large, and when big current concentrates electric discharge, stator caloric value is comparatively large, if heat can not shed in time, too high temperature will produce infringement to stators and rotators, cause whole machine breakdown.Meanwhile, flywheel accumulator is as a kind of mechanical device of High Rotation Speed, and bearing arrangement is its critical component, and the lubrication of bearing and the quality of radiating effect are also that can whole system the key of reliability service.
The heat dissipating method of existing flywheel accumulator, is typically designed to fluid pump and drives cooling fluid flow in the circulatory system and carry out heat exchange, but heat dissipation region is very limited, can not take into account the heat radiation of rotor, stator and bearing simultaneously.And in order to reduce the energy loss that High Rotation Speed flywheel brings because of windage, flywheel is generally placed in vacuum or the less closed container of air pressure, circulatory system operating pressure in vacuum environment is very little, the too small pump that causes of the inlet pressure of pump cannot normally work, and also easily produce cavitation, consequence is that cooling fluid undersupply causes apparatus overheat to burn out.
Summary of the invention
The applicant can not take into account the little cisco unity malfunction of inlet pressure of each parts, pump for above-mentioned existing flywheel accumulator heat radiation, easy generation cavitation such as cannot to be dispelled the heat at the shortcoming, a kind of cooling system of flywheel accumulator rational in infrastructure is provided, thus not only all can dispel the heat to these critical components of stator, rotor and bearing, also can take into account the lubrication of bearing simultaneously.
The technical solution adopted in the present invention is as follows:
A kind of cooling system of flywheel accumulator, described flywheel accumulator is become with inner disc type group of motors by housing, described housing is vacuum seal structure, housing top and the bottom are respectively arranged with upper oil cavitie and lower oil cavitie, one group of flywheel is at least comprised in housing, the central shaft of flywheel is hollow mandrel, and central authorities are provided with axis hole, and axis hole is communicated with upper oil cavitie and lower oil cavitie; Fuel tank is arranged in outside, and fuel tank is communicated to upper oil cavitie by upper oil pipe, is communicated to lower oil cavitie by oil return pipe, oil return pipe is provided with the 3rd valve, oil pump and radiator.
Further improvement as technique scheme:
In top chock, be positioned at above upper bearing (metal), be provided with seal, upper oil cavitie is divided into upper shaft hole chamber and upper bearing (metal) chamber; In step, be positioned at below lower bearing, be provided with lower seal, lower oil cavitie is divided into lower bearing chamber and lower shaft vestibule; Upper shaft hole chamber, lower shaft vestibule are connected with axis hole, and upper shaft hole chamber is connected with upper oil pipe, and lower shaft vestibule is connected with the first oil return pipe; Upper bearing (metal) chamber, lower bearing chamber are connected with container intracavity, and lower bearing chamber is connected with oil return pipe.
Upper seal adopts labyrinth seal, and part oil can be allowed to arrive upper bearing (metal) by sealing; Lower seal has enough tightnesses, and making has enough pressure differentials inside and outside lower shaft vestibule.
Described housing is made up of cylindrical shell, upper cover plate and lower cover and is tightly connected, and upper cover plate and lower cover central authorities are fixed with top chock and step respectively, and upper bearing (metal) is embedded in top chock and forms upper oil cavitie, and lower bearing is embedded in step and forms lower oil cavitie.
The upper permanent magnet of the annular that lower flywheel lower surface arrangement has magnetic direction identical with intensity, is also furnished with the lower permanent magnet of the magnetic direction annular identical with intensity above lower cover.
Axially relatively, and magnet mutual exclusion, constitute axial Permanent-magnet bearing, carry the weight of whole rotor.
Stator disc upper surface is provided with heat dissipation plate, and heat dissipation plate is provided with the curve-like runner circled on the surface, accepts the heat radiation oil inlet pipe arranged below fuel tank above heat dissipation plate, and heat dissipation plate is communicated to lower oil cavitie by the heat radiation flowline of below.
Stator disc uses heat conduction but non-conducting material.
If lower oil cavitie pressure is less than the inlet pressure of oil pump, open vacuum valve, allow air to enter increase oil pressure and prevent cavitation.
Beneficial effect of the present invention is as follows:
The present invention is cooled to rotor by axis hole, can take away the amount of heat of the rotor of High Rotation Speed in time, guarantee the safe and stable operation of flywheel accumulator.By arranging of seal, this loop and vacuum cavity are isolated, can ensure that the import of pump has sufficient inlet pressure, and avoid low pressure to make pump produce the defects such as cavitation.
Part cold oil of the present invention flows through metal (upper simultaneously, both can dispel the heat to metal (upper, also can lubricate it, ensure that the reliably working of critical component bearing.
The present invention utilizes the part cold oil flowing through bearing, also can dispel the heat in time to stator disc.For particular job type that often there will be big current and concentrate electric discharge, by arranging independent heat radiation oil pipe and heat dissipation plate, stator being dispelled the heat separately, guarantees the steady operation of stator.
The type of vacuum degree of vessel temporarily can be reduced at work for some, the present invention set up vacuum degree of vessel regulation measure, temporarily to reduce the vacuum degree of container, the inlet pressure of pump is increased, avoid the cavitation of pump, pump is normally worked, thus in time oil is withdrawn into fuel tank from cavity below.
Accompanying drawing explanation
Fig. 1 be of the present invention in cut open figure.
Fig. 2 is the vertical view of heat dissipation plate of the present invention.
Fig. 3 cuts open figure in the embodiment of the present invention two.
Fig. 4 is the A portion enlarged drawing in Fig. 3.
Fig. 5 is the B portion enlarged drawing in Fig. 3.
In figure: 1, cylindrical shell; 2, upper cover plate; 3, top chock; 4, upper bearing (metal); 5, central shaft; 6, axis hole; 7, lower bearing; 8, step; 9, lower cover; 10, vacuum pump; 11, upper flywheel; 12, upper permanent-magnetic clamp; 13, stator disc; 14, retainer ring; 15, lower permanent-magnetic clamp; 16, lower flywheel; 17, upper permanent magnet; 18, lower permanent magnet; 21, upper oil cavitie; 22, the first valve; 23, upper oil pipe; 24, fuel tank; 25, dispel the heat oil inlet pipe; 26, the second valve; 27, heat dissipation plate; 28, oil filter; 29, radiator; 30, dispel the heat flowline; 31, the 3rd valve; 32, oil return pipe; 33, oil pump; 34, lower oil cavitie; 35, vacuum valve; 36, the 4th valve; 37, runner; 38, the second oil pump; 41, upper shaft hole chamber; 42, upper seal; 43, upper bearing (metal) chamber; 44, lower bearing chamber; 45, lower seal; 46, lower shaft vestibule; 47, the first oil return pipe; 48, shim.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Embodiment one:
As shown in Figure 1, flywheel accumulator of the present invention is become with inner disc type group of motors by housing, and rotor and the flywheel of disc type electric machine unite two into one, and disc type electric machine can be used as motor, promotes flywheel turns; Also can be used as generator, driven by flywheel, produce electric energy.Housing is made up of with lower cover 9 cylindrical shell 1, upper cover plate 2, upper cover plate 2 and lower cover 9 central authorities are fixed with top chock 3 and step 8 respectively, upper bearing (metal) 4 is embedded in top chock 3 and forms upper oil cavitie 21, and lower bearing 7 is embedded in step 8 and forms lower oil cavitie 34.The material of housing can be steel, aluminium, plastics, fiberglass, carbon fiber, concrete and its combination etc. have the material of some strength.
In order to reduce air drag when flywheel accumulator rotates, cylindrical shell 1, upper cover plate 2, lower cover 9, connection between top chock 3 and step 8 are all sealings, thus whole container casing is sealing, and is configured with vacuum pump 10, the air intake duct connection container of vacuum pump 10.During work, vacuum pump 10 is relied on to keep the vacuum degree of container intracavity.
At least comprise one group of flywheel in housing, flywheel is made up of upper flywheel 11 and lower flywheel 16, is fixed on central shaft 5, and central shaft 5 is hollow mandrel, and central authorities are provided with axis hole 6, and axis hole 6 is communicated with upper oil cavitie 21 and lower oil cavitie 34.The material of upper and lower flywheel is magnetic conductive material, and such as steel or other material are as iron, nickel, cobalt etc.Upper flywheel 11 lower surface arranges the upper permanent-magnetic clamp 12 of a ring shape along outer rim, and the magnetic direction of adjacent magnets is contrary; Lower flywheel 16 upper surface arranges the lower permanent-magnetic clamp 15 of a ring shape along outer rim, and the magnetic direction of adjacent magnets is contrary.The permanent magnet that upper-lower position is relative is different in nature magnet, attracts each other, partners; Two groups of permanent-magnetic clamps thus form the magnetic field of disc type electric machine.Between upper and lower flywheel outer rim in a distance, this distance center is furnished with the stator disc 13 of disc type electric machine, and arrange motor coil inside stator disc 13, stator disc 13 is fixed on the retainer ring 14 on the inwall of cylindrical shell 1.
The upper permanent magnet 17 of the annular that lower flywheel 16 lower surface arrangement has magnetic direction identical with intensity, lower cover 9 is also furnished with the lower permanent magnet 18 of the magnetic direction annular identical with intensity above.Upper permanent magnet 17 is equal with lower permanent magnet 18 magnetic field intensity, axially relatively, and magnet mutual exclusion, constitute axial Permanent-magnet bearing, carry the weight of whole rotor.Upper bearing (metal) 4 and lower bearing 7 are fixed wtih the radial position of rotor.
Fuel tank 24 is arranged in outside, be positioned at height certain above housing, fuel tank 24 is communicated to upper oil cavitie 21 by upper oil pipe 23, the oil that fuel tank is 24 li is under gravity by the two-way branch of upper oil pipe 23, one tunnel is guided to upper bearing (metal) 4, and another road is diversed to be entered in the axis hole 6 of central shaft 5.Upper oil pipe 23 is provided with the first valve 22.Oil return pipe 32 is communicated with lower oil cavitie 34 and fuel tank 24, oil return pipe 32 is provided with the 3rd valve 31, oil pump 33, radiator 29 and oil filter 28.
Coil in stator disc 13 is by after electric current, and produce heat, heat must shed in time, otherwise the too high meeting of coil temperature causes motor not work.Stator disc 13 and retainer ring 14 have certain gap, with ensure oil by, and not to be deposited on dish.In order to make motor normally work, stator disc 13 must use heat conduction but non-conducting material, such as heat-conducting plastic.The material of retainer ring 14 is steel or other metal material, or other Heat Conduction Material.The heat of coil of stator of motor can be transmitted to cylindrical shell 1 by stator disc 13 and retainer ring 14, thus heat is distributed.
If motor is charging and discharging frequently, the coil of stator disc 13 can produce a large amount of heats, and stator disc 13 temperature can raise very soon, and only relying on the heat transfer of cylindrical shell 1 to carry out heat radiation can not meet cooling requirements.As one preferably embodiment, the present invention is provided with heat dissipation plate 27 at stator disc 13 upper surface, and heat dissipation plate 27 as shown in Figure 2, is provided with on the surface to circle and is similar to the curvilinear runner 37 in petal periphery, and runner also can be other shape.Accept the heat radiation oil inlet pipe 25 arranged below fuel tank 24 above heat dissipation plate 27, heat dissipation plate 27 is communicated to lower oil cavitie 34 by the heat radiation flowline 30 of below.
During real work, start up system power supply, controller opens disc type electric machine drives rotor turns, lubricating system is started working: controller opens first valve 22, oil flows to upper bearing (metal) 4 from fuel tank 24, after upper bearing (metal) 4 obtains lubrication, oil drops on flywheel rotor by gap, and the power that is then centrifuged is thrown to cylindrical shell 1 inwall; Flow down along inwall and flow to lower cover 9 through stator disc 13 and then flow to lower bearing 7 and lubricate, finally flow in lower oil cavitie 34.Oil flow in the axis hole 6 of central shaft 5 from fuel tank 24 simultaneously, and in axis hole 6 decline process, absorb heat in the upper flywheel 11 of rotor and lower flywheel 16, the oil after intensification falls into and is collected in lower oil cavitie 34.Setting is every time t0, and the oil in lower oil cavitie 34 runs up to certain altitude, and pressure sensor detects that force value is A.In order to make oil pump 33 normally work, and avoid cavitation occurs, the inlet pressure of oil pump 33 has a set point B.If A is greater than B, pressure sensor feeds back to controller, and controller opens the 3rd valve 31 also starts oil pump 33, makes that oil carries out cooling through radiator 29, oil filter 28 carries out filtering and finally draw back fuel tank 24, complete the circulation of oil.If A is less than B, controller cuts out the first valve 22 and the second valve 26, and open vacuum valve 35, air enters in container, and force value A increases; When A is greater than B, close vacuum valve 35.At this time, controller opens the 3rd valve 31 also starts oil pump 33, and oil is cooled through radiator 29, and oil filter 28 carries out filtering finally draws back fuel tank 24, completes the circulation of oil.After the oil of lower oil cavitie 34 exhausts, controller cuts out the 3rd valve 31, closes oil pump 33, start vacuum pump 10 simultaneously, reduce the vacuum degree in container, until vacuum degree returns to original working level, close vacuum pump 10, open the first valve 22 and the second valve 26, the circulatory system works on.
Embodiment two:
As shown in Figure 4, the present embodiment, in top chock 3, is positioned at above upper bearing (metal) 4, is provided with seal 42, former upper oil cavitie 21 is divided into upper shaft hole chamber 41 and upper bearing (metal) chamber 43.As shown in Figure 5, the present embodiment, in step 8, is positioned at below lower bearing 7, is provided with lower seal 45 and shim 48, former lower oil cavitie 34 is divided into lower bearing chamber 44 and lower shaft vestibule 46.As shown in Figure 3, upper shaft hole chamber 41, lower shaft vestibule 46 are connected with axis hole 6, and upper shaft hole chamber 41 is connected with upper oil pipe 23, and lower shaft vestibule 46 is connected with the first oil return pipe 47.Upper bearing (metal) chamber 43, lower bearing chamber 44 are communicated with container intracavity, and lower bearing chamber 44 is connected with oil return pipe 32.The upper seal 42 of the present embodiment adopts labyrinth seal, labyrinth seal is a kind of non-contacting seal, this sealing can allow part oil by sealing, arrive on upper bearing (metal) 4, after lubricating bearings, then fall on flywheel 11, be thrown to a barrel wall, flow on lower bearing 7 downwards, after lubricating bearings, finally get back to lower bearing chamber 44.Upper seal 42 also can use the encapsulating method of other type, but the oil that must guarantee appropriate amount flows into upper bearing (metal) chamber 43 from upper shaft hole chamber 41.In order to ensure that the import of oil pump 33 has enough pressure, lower seal 45 will have enough tightnesses, makes there are enough pressure differentials inside and outside lower shaft vestibule 46.Lower seal 45 can use labyrinth seal or other seal type.
During real work, start up system power supply, controller opens disc type electric machine drives rotor turns, open the first valve 22, heat radiation lubricating system starts: oil flows to upper shaft hole chamber 41 from fuel tank 24, and most of oil enters lower shaft vestibule 46 by axis hole 6, when pressure sensor in lower shaft vestibule 46 reaches certain value, controller opens the 3rd valve 31, starts oil pump 33, oil is drawn back in fuel tank 24.Small part oil in upper shaft hole chamber 41 drains to upper bearing (metal) 4 from upper seal 42, and after upper bearing (metal) 4 obtains lubrication, oil, through cylindrical shell 1 cavity inner wall, flow to lower bearing 7 to after its lubrication, finally flows in lower bearing chamber 44.Every time t0, the oil in lower bearing chamber 44 runs up to certain altitude, and pressure sensor detects that pressure set points is A.In order to make oil pump 33 normally work, and avoid cavitation occurs, the inlet pressure of oil pump 33 has a set point B.If A is greater than B, pressure sensor feeds back to controller, and controller opens the 3rd valve 31 also starts oil pump 33, makes that oil carries out cooling through radiator 29, oil filter 28 carries out filtering and finally draw back fuel tank 24, complete the circulation of oil.If A is less than B, controller cuts out the first valve 22 and the second valve 26, and open vacuum valve 35, air enters in container, and force value A increases; When A is greater than B, close vacuum valve 35.At this time, controller opens the 3rd valve 31 also starts oil pump 33, and oil is cooled through radiator 29, and oil filter 28 carries out filtering finally draws back fuel tank 24, completes the circulation of oil.
More than describing is explanation of the invention, it not the restriction to invention, limited range of the present invention is see claim, when without prejudice to spirit of the present invention, the present invention can do any type of amendment, giving bearing lubrication in the present invention and lowering the temperature to rotor stator is all use same oil, and this oil has lubrication and heat sinking function concurrently, generally has lower saturated vapor pressure.But also can adopt the cooling fluid that heat conductivility is more excellent, the container only needing increase by independent to hold cooling fluid, and is changed slightly to pipeline.Or oil circuit also can run from bottom to top.
Claims (8)
1. the cooling system of a flywheel accumulator, described flywheel accumulator is become with inner disc type group of motors by housing, it is characterized in that: described housing is vacuum seal structure, housing top and the bottom are respectively arranged with upper oil cavitie (21) and lower oil cavitie (34), one group of flywheel is at least comprised in housing, the central shaft (5) of flywheel is hollow mandrel, and central authorities are provided with axis hole (6), and axis hole (6) is communicated with upper oil cavitie (21) and lower oil cavitie (34); Fuel tank (24) is arranged in outside, fuel tank (24) is communicated to upper oil cavitie (21) by upper oil pipe (23), be communicated to lower oil cavitie (34) by oil return pipe (32), oil return pipe (32) be provided with the 3rd valve (31), oil pump (33) and radiator (29).
2. according to the cooling system of flywheel accumulator according to claim 1, it is characterized in that: in top chock (3), be positioned at upper bearing (metal) (4) top, be provided with seal (42), upper oil cavitie (21) is divided into upper shaft hole chamber (41) and upper bearing (metal) chamber (43); In step (8), be positioned at lower bearing (7) below, be provided with lower seal (45) and shim (48), lower oil cavitie (34) is divided into lower bearing chamber (44) and lower shaft vestibule (46); Upper shaft hole chamber (41), lower shaft vestibule (46) are connected with axis hole (6), and upper shaft hole chamber (41) are connected with upper oil pipe (23), and lower shaft vestibule (46) is connected with the first oil return pipe (47); Upper bearing (metal) chamber (43), lower bearing chamber (44) are connected with container intracavity, and lower bearing chamber (44) are connected with oil return pipe (32).
3. according to the cooling system of flywheel accumulator according to claim 2, it is characterized in that: upper seal (42) adopts labyrinth seal, part oil can be allowed to arrive upper bearing (metal) (4) by sealing; Lower seal (45) has enough tightnesses, and making has enough pressure differentials inside and outside lower shaft vestibule (46).
4. according to the cooling system of flywheel accumulator according to claim 1 or claim 2, it is characterized in that: described housing is formed by cylindrical shell (1), upper cover plate (2) with lower cover (9) and is tightly connected, upper cover plate (2) and lower cover (9) central authorities are fixed with top chock (3) and step (8) respectively, upper bearing (metal) (4) is embedded in top chock (3) and forms upper oil cavitie (21), and lower bearing (7) is embedded in step (8) and forms lower oil cavitie (34).
5. according to the cooling system of flywheel accumulator according to claim 1 or claim 2, it is characterized in that: the upper permanent magnet (17) of the annular that lower flywheel (16) lower surface arrangement has magnetic direction identical with intensity, lower cover (9) is also furnished with the lower permanent magnet (18) of the magnetic direction annular identical with intensity above, upper permanent magnet (17) is equal with lower permanent magnet (18) magnetic field intensity, axially relatively, and magnet mutual exclusion, constitute axial Permanent-magnet bearing, carry the weight of whole rotor.
6. according to the cooling system of flywheel accumulator according to claim 1 or claim 2, it is characterized in that: stator disc (13) upper surface is provided with heat dissipation plate (27), heat dissipation plate (27) is provided with the curve-like runner (37) circled on the surface, the heat radiation oil inlet pipe (25) that fuel tank (24) below is arranged is accepted in heat dissipation plate (27) top, and heat dissipation plate (27) is communicated to lower oil cavitie (34) by the heat radiation flowline (30) of below.
7. according to the cooling system of flywheel accumulator according to claim 1 or claim 2, it is characterized in that: stator disc (13) uses heat conduction but non-conducting material.
8. according to the cooling system of flywheel accumulator according to claim 1 or claim 2, it is characterized in that: if lower oil cavitie (34) pressure is less than the inlet pressure of oil pump (33), open vacuum valve (35), allow air to enter increase oil pressure and prevent cavitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510066959.XA CN104578595B (en) | 2015-02-10 | 2015-02-10 | The cooling system of flywheel accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510066959.XA CN104578595B (en) | 2015-02-10 | 2015-02-10 | The cooling system of flywheel accumulator |
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| CN104578595A true CN104578595A (en) | 2015-04-29 |
| CN104578595B CN104578595B (en) | 2017-05-31 |
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| CN201510066959.XA Active CN104578595B (en) | 2015-02-10 | 2015-02-10 | The cooling system of flywheel accumulator |
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