CN110350705A - The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout - Google Patents
The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout Download PDFInfo
- Publication number
- CN110350705A CN110350705A CN201910608475.1A CN201910608475A CN110350705A CN 110350705 A CN110350705 A CN 110350705A CN 201910608475 A CN201910608475 A CN 201910608475A CN 110350705 A CN110350705 A CN 110350705A
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- Prior art keywords
- fire
- proof motor
- enclosed construction
- proof
- waterproof
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The fire-proof motor and its method of a kind of waterproof and dustproof provided by the present application, Anti-burnout; by using three-layer sealed processing mode to winding coil and its electric circuit inside fire-proof motor; sealing, insulation, route protection, waterproof and anti-dust performance are enhanced, and can effectively prevent electrification by induction；Thermometric is increased simultaneously, fire odor detection, electrostatic detection function, and temperature, smell and the electrostatic signal real-time radio obtained to sensing externally emits, and is conducive to external status monitoring and abnormity early warning to fire-proof motor, realizes waterproof and dustproof and prevent the fire-proof motor burnt.
Description
Technical field
This application involves explosion-proof electrification technical field more particularly to a kind of waterproof and dustproof, Anti-burnout fire-proof motor and its
Method.
Background technique
Flame-proof type explosion-proof motor at present, explosion-proof performance are realized by the explosion suppresion surface of flameproof enclosure, the introducing of wire connection cavity
Device is realized by sealing ring.Since there are flameproof gap, machine winding can not waterproof and dustproof.Machine winding is due to setting
Meter, operation and the influence of external environment, there are winding hot-spot, winding insulation decline in turn results in turn-to-turn short circuit or alternate short
The hidden danger on road.Connecting terminal also easily causes interior fires there are poor contact phenomenon.Therefore, it is answered in explosive gas atmosphere
Fire-proof motor is also faced with waterproof sealing, dust-proof and anti-overheat burnout problems in addition to realizing explosion prevention function.
The Chinese patent application " a kind of anti-explosion temperature measuring junction box " of application number CN201020206437.8 at present, realizes pair
Bearing and stator thermometric.A kind of Chinese patent " traction electricity suitable for voltage levels of application number CN201410115759.4
Machine terminal box and its manufacturing method " connects three-phase lead-out wire and three-phase electricity cable, using insulating wrapping and encapsulating in terminal box
Encapsulating method keeps terminal box sealed reliable and insulation reliable.A kind of Chinese patent " flame proof of application number CN201520407322.8
Motor heater wiring assembly ", the fixation device by the seal sizing material filled with sealant as heater lead make to add
The mode of connection better tightness of hot device lead.
But the above-mentioned prior art can not it is well suited in solve fire-proof motor inside winding face waterproof and dustproof,
Anti-burnout problem.Specifically, the temp measuring method of the bearing and stator of the above-mentioned prior art be different from fire-proof motor inside around
Group thermometric, the former uses external temperature measuring equipment, and volume is not main problem, and the temperature element of the latter is then by the limit of volume
System.The insulating wrapping and sealant pouring and sealing method of terminal box can not be also transferred in the inside winding of fire-proof motor because stator around
Group runs at high speed.The sealing of heater lead is to seal and add using the purpose of the seal sizing material filled with sealant
Strong mechanical strength, if winding directlys adopt epoxide-resin glue envelope inside motor, internal stress may cause the exhausted of winding conducting wire
Edge damage.Simultaneously the above method do not account for glue envelope caused by electrification by induction problem, this to it is explosion-proof be unfavorable.
As it can be seen that in order to guarantee safety, the highly desirable one kind that can design of people is directed to internal winding while realizing waterproof, preventing
Dirt and the fire-proof motor for preventing from burning function.This is related to the technical issues of four aspects: first is that how to realize the sealing of winding
Waterproof with it is dust-proof, second is that how to realize the thermometric of winding so as to prevent overheat, third is that how to pass through when being overheated to winding
Detection prevents fire from occurring, fourth is that anti-induction electrification problem.
Summary of the invention
In view of this, the purpose of the application is to propose the fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout.
The present invention provides the fire-proof motor of a kind of waterproof and dustproof, Anti-burnout, which is characterized in that inside the fire-proof motor
Coil windings and electric circuit be glued the enclosed construction that agent or encapsulation object are formed and surround sealing；The enclosed construction appearance
Face arrangement insulation enhancement layer；Conductive layer is arranged in the outer surface of the insulation enhancement layer.
Preferably, by the enclosed construction surround sealing coil windings and electric wiring include with flowering structure at least
One: stator coil, rotor coil, magnet exciting coil, demagnetization circuit, rotating rectifier.
Preferably, the adhesive or encapsulation object for forming the enclosed construction can be thermosetting substance, thermoplasticity object
One or more of matter or elastic material.
It may further be preferable that forming the adhesive of the enclosed construction or encapsulation object can be one kind of following substance
It is or several: silicon rubber, novolac epoxy resin, polyurethane elastomer.
It may further be preferable that when using silicon rubber, novolac epoxy resin, any two kinds in polyurethane elastomer or
When a variety of, the enclosed construction is formed by the way of layering gluing or encapsulation.
Nitridation is added in at least one adhesive or encapsulation object of the enclosed construction it may further be preferable that being formed
Aluminium, aluminium oxide, any one or a few in silicon carbide are as thermal conducting agent.
Preferably, any one following material is coated in enclosed construction outer surface form the insulation enhancement layer: epoxy
Resin, polyorganosiloxane resin, acrylic resin.
Preferably, it is led in insulation enhancement layer outer surface coated with resins base conductive silver glue either resin base carbon nano-particle
Electric glue forms the conductive layer.
Preferably, the enclosed construction with a thickness of 0.05-0.5mm, the insulation enhancement layer with a thickness of 0.5-1mm,
The conductive layer thickness is 0.05-0.1mm.
Preferably, it also installs inside the fire-proof motor at least one or a variety of of lower sensor: temperature sensing
Device carries out temperature test for the heating position to fire-proof motor；Gas sensor or smell sensor, for measuring anti-explosion electric
Gas is generated in machine to carry out fire alarm；Non-contact electrostatic detection sensor, the static value for detection winding surface.
It may further be preferable that also installing single-chip microcontroller and wireless launcher inside the fire-proof motor；The temperature
Sensor, gas sensor or smell sensor, Non-contact electrostatic detection sensor are respectively connected to single-chip microcontroller, and single-chip microcontroller
Connect wireless launcher.
The application and then a kind of waterproof and dustproof for fire-proof motor proposed, burn-out-proof damage method, which is characterized in that packet
Include following steps:.
By with adhesive gluing or with encapsulation object encapsulation in coil windings and electric circuit inside fire-proof motor
Form enclosed construction；
It coats to form insulation enhancement layer in the enclosed construction outer surface；
It coats to form conductive layer in the outer surface of the insulation enhancement layer.
Preferably, by the enclosed construction surround sealing coil windings and electric wiring include with flowering structure at least
One: stator coil, rotor coil, magnet exciting coil, demagnetization circuit, rotating rectifier.
Preferably, the adhesive or encapsulation object for forming the enclosed construction can be thermosetting substance, thermoplasticity object
One or more of matter or elastic material.
It may further be preferable that forming the adhesive of the enclosed construction or encapsulation object can be one kind of following substance
It is or several: silicon rubber, novolac epoxy resin, polyurethane elastomer.
It may further be preferable that when using silicon rubber, novolac epoxy resin, any two kinds in polyurethane elastomer or
When a variety of, the enclosed construction is formed by the way of layering gluing or encapsulation.
Nitridation is added in at least one adhesive or encapsulation object of the enclosed construction it may further be preferable that being formed
Aluminium, aluminium oxide, any one or a few in silicon carbide are as thermal conducting agent.
Preferably, any one following material is coated in enclosed construction outer surface form the insulation enhancement layer: epoxy
Resin, polyorganosiloxane resin, acrylic resin.
Preferably, it is led in insulation enhancement layer outer surface coated with resins base conductive silver glue either resin base carbon nano-particle
Electric glue forms the conductive layer.
Preferably, the enclosed construction with a thickness of 0.05-0.5mm, the insulation enhancement layer with a thickness of 0.5-1mm,
The conductive layer thickness is 0.05-0.1mm.
Preferably, the method also includes installing inside fire-proof motor at least one of lower sensor or more
Kind: temperature sensor carries out temperature test for the heating position to fire-proof motor；Gas sensor or smell sensor are used
In generation gas in measurement fire-proof motor to carry out fire alarm；Non-contact electrostatic detection sensor is used for detection winding table
The static value in face.
As it can be seen that the present invention is by using three-layer sealed processing side to winding coil and its electric circuit inside fire-proof motor
Formula enhances sealing, insulation, route protection, waterproof and anti-dust performance, and can effectively prevent electrification by induction；Increase simultaneously
Thermometric, fire odor detection, electrostatic detection function, and to temperature, smell and the electrostatic signal real-time radio that sensing obtains
Externally transmitting is conducive to external status monitoring and abnormity early warning to fire-proof motor, realizes what waterproof and dustproof and preventing was burnt
Fire-proof motor.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Figure 1A -1B is the fire-proof motor overall schematic of the embodiment of the present application；
Fig. 2 is the coil winding arrangement schematic diagram after the triple modular redundant processing of the embodiment of the present application；
Fig. 3 is fire-proof motor internal sensor system arragement construction figure.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to related invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As seen in figs. 1 a-1b, fire-proof motor of the invention includes with flowering structure: key 1, axial plane oil sealing 2, waveform spring piece 3,
Bearing 4, end cap 5, terminal box 6, stator 7, rotor 8, washer 9, washer 10, bolt 11, washer 12, bolt 13, end cap 14, fan housing
15, fan 16, rivet 17, nameplate 18, bolt 19, washer 20, washer 21, explosion-proof breather drain valve 22, washer 23, retaining ring 24 with
And retaining ring 25.
In order to make the inside winding of fire-proof motor realize waterproof and dustproof and prevent from burning function, the present invention is to fire-proof motor
Internal coil windings and electric circuit have carried out triple modular redundant processing, coil winding arrangement such as Fig. 2 institute after triple modular redundant processing
Show.
Firstly, make the enclosed construction encirclement sealing that coil windings and its electric circuit are glued agent or encapsulation object is formed,
To achieve the purpose that insulate and prevent circuit from damaging.The coil windings and electric wiring packet of sealing are surrounded by the enclosed construction
Include with flowering structure at least one: stator coil, rotor coil, magnet exciting coil, demagnetization circuit, rotating rectifier.For example, Fig. 2
Coil winding R is closed structure E encirclement.The adhesive or encapsulation object for forming the enclosed construction E can be thermosetting property object
One or more of matter, thermoplastic or elastic material；For example, forming the adhesive of the enclosed construction E or pouring
Envelope object can be the one or several kinds of following substance: silicon rubber, novolac epoxy resin, polyurethane elastomer (PUE).Work as use
When a variety of above substances, layering carries out gluing or encapsulation, for example, first being poured in Fig. 2 with epoxy resin encapsulation coil windings R formation
Envelope layering E1, then encapsulation is formed with silicon rubber encapsulation and is layered E2.Also, formed the enclosed construction at least one adhesive or
It can also include following additive or filler in person's encapsulation object: (1) aluminium nitride, aluminium oxide, any one in silicon carbide is added
Kind or it is several be used as thermal conducting agent, thermal conducting agent mass percent is the 20%-30% of adhesive or encapsulation object matrix, preferably 25%.
(2) 3- amido triethoxysilane is added as coupling agent.
It carries out second on the surface enclosed construction E that the adhesive or encapsulation object are formed to handle again, i.e., in the closing
Structural outer surface forms one layer of insulation enhancement layer I, and insulation enhancement layer I can select insulated paint or insulating cement in enclosed construction
Outer surface coated, for example, insulation enhancement layer I, which can be, coats any one following material in enclosed construction outer surface
Matter: epoxy resin, polyorganosiloxane resin, acrylic resin.Insulation enhancement layer I can play the role of reinforced insulation.
Third handle again be it is described insulation enhancement layer I one layer of conductive layer D of surface layout, can insulation enhancement layer outside
Surface coating conducting resinl or conductive paint form this layer of conductive layer, and the effect of conductive layer D is to prevent electrification by induction, for example, can be with
Coated with resins base conductive silver glue either resin base carbon nano-particle conducting resinl forms conductive layer D.
The present invention is by enhancing close to the coil windings and the above-mentioned three layers of processing of electric circuit increase inside fire-proof motor
Envelope, insulation, route protection, waterproof and anti-dust performance, and can effectively prevent electrification by induction.Also, in connecing for fire-proof motor
The structure also formed with adhesive or encapsulation object inside wire box, thus by wiring winding encapsulation.It is described below according to the present invention
Triple processing realize embodiment
First embodiment
In the present embodiment, make to form closing knot outside coil windings and its electric circuit with novolac epoxy resin encapsulation
Structure, and 20% aluminium nitride for accounting for novolac epoxy resin quality is added as thermal conducting agent；Enclosed construction outer surface coats poly- silicon oxygen
Alkane resin is coated with resin base conductive silver glue as conductive layer as insulation enhancement layer.It is formed outside coil windings and electric wiring
The enclosed construction with a thickness of 0.05mm, the enhancement layer that insulate is with a thickness of 0.5mm, conductive layer thickness 0.05mm.
Second embodiment
In the present embodiment, make outside coil windings and its electric circuit successively with silicone rubber adhesive and novolac epoxy resin
Adhesive carries out layering gluing, forms enclosed construction；People's additive is not added.Enclosed construction outer surface coats acrylic resin conduct
Insulate enhancement layer, and re-coating resin base carbon nano-particle conducting resinl forms conductive layer.Wherein, the enclosed construction with a thickness of
0.5mm, for the enhancement layer that insulate with a thickness of 1mm, O.07mm conductive layer thickness is.
3rd embodiment
In the present embodiment, make outside coil windings and its electric circuit successively with novolac epoxy resin, polyurethane bullet
Property body (PUE) be layered encapsulation formed enclosed construction, and be distributed be added account for novolac epoxy resin, polyurethane elastomer (PUE) quality
25% silicon carbide as thermal conducting agent, and appropriate 3- amido triethoxysilane is added as coupling agent.Enclosed construction appearance
Face coats epoxy resins insulation glue as insulation enhancement layer, is coated with resin base conductive silver glue as conductive layer.Coil windings and
The enclosed construction formed outside electric wiring with a thickness of 0.35mm, with a thickness of 0.7mm, conductive layer thickness is the enhancement layer that insulate
0.1mm。
Comparative example
As a comparison, it uses epoxy resin encapsulation merely outside fire-proof motor coil and electric circuit, pours the thickness of sealing
For 1.5mm.
Each 10 samples of above embodiments and comparative example are taken to carry out instantaneous frequency breakdown voltage and disruptive field intensity test:
10 sample average breakdown voltage 82.6KV of first embodiment, average disruptive field intensity 54.8MV/m；10 samples of second embodiment
Average voltage breakdown 89.1KV, average disruptive field intensity 59.2MV/m, 10 sample average breakdown voltage 87.8KV of 3rd embodiment,
Average disruptive field intensity 57.0MV/m；10 sample average breakdown voltage 72.3KV of comparative example, average disruptive field intensity 25.1MV/m.It can
See, the present invention has by triple treated insulation performances to be obviously improved.
Fourth embodiment
In order to realize the odor detection when thermometric and overheat to coil windings, prevent motor from burning even fire hair
Raw, sensing system is arranged in the present invention in fire-proof motor, and Fig. 3 shows fire-proof motor internal sensor system arragement construction
Figure.Wherein, above-mentioned one or more warm by three-layer sealed circuit part and the setting of other sites of heat generation in fire-proof motor
Sensor T is spent, the temperature sensor T can use contact and/or infrared type temperature sensor.For example, temperature sensor
Realize that platinum resistance PT100 can be used in temperature sensing, resistance corresponding change when temperature change, temperature measurement range is -10 DEG C~
500℃.Smell sensor (being commonly called as electronic nose) and/or gas sensor A are also equipped with inside fire-proof motor, to detect fire
Hidden danger, for example, gas sensor uses SiO2 type gas sensor.Passive Non-contact electrostatic detection sensing is additionally provided in motor
Device S, the electrostatic on detection winding surface；Contactless electrostatic transducer includes induction electrode and coupling electrode, and induction electrode is quiet
Electric signal receiving plane, coupling electrode and induction electrode form the capacitor of a constant capacitance, and measuring circuit connects coupling electrode,
The electric signal that capacitor induction electrostatic generates is acquired, and quantifies to realize the measurement to buildup of static electricity.The temperature sensor,
Smell sensor and/or gas sensor, electrostatic detection sensor are respectively connected to single-chip microcontroller C, and single-chip microcontroller connection is wireless
Emitter R, temperature sensor signal, gas sensor signal, electrostatic transducer signal are converged inside motor by single-chip microcontroller
Always, MCU driving wireless launcher issues above-mentioned transducing signal, and wherein wireless launcher is placed in junction box.It is logical
The transducing signal of wireless launcher sending is crossed, whether are the extraneous temperature that can be monitored in real time inside fire-proof motor, buildup of static electricity
Generated in normality threshold range, and with the presence or absence of abnormal smell, once occur temperature is excessively high or unusual odor generates,
Buildup of static electricity is excessive to be can be handled in time, and generation motor is avoided to burn even initiation fire.Low-power consumption can be used in single-chip microcontroller
8051 single-chip microcontrollers, for receiving multichannel analog signals.The wireless launcher uses H 34B low-consumption wireless transmitting module.
As it can be seen that the present invention is by using three-layer sealed processing side to winding coil and its electric circuit inside fire-proof motor
Formula enhances sealing, insulation, route protection, waterproof and anti-dust performance, and can effectively prevent electrification by induction；Increase simultaneously
Thermometric, fire odor detection, electrostatic detection function, and to temperature, smell and the electrostatic signal real-time radio that sensing obtains
Externally transmitting is conducive to external status monitoring and abnormity early warning to fire-proof motor, realizes what waterproof and dustproof and preventing was burnt
Fire-proof motor.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from foregoing invention design, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (10)
1. the fire-proof motor of a kind of waterproof and dustproof, Anti-burnout, which is characterized in that coil windings inside the fire-proof motor and
The enclosed construction encirclement sealing that electric circuit is glued agent or encapsulation object is formed；The enclosed construction outer surface arrangement insulation increases
Strong layer；Conductive layer is arranged in the outer surface of the insulation enhancement layer.
2. fire-proof motor according to claim 1, which is characterized in that surrounded the coil windings of sealing by the enclosed construction
With electric wiring include with flowering structure at least one: stator coil, rotor coil, magnet exciting coil, demagnetization circuit, rotary rectifier
Device.
3. fire-proof motor according to claim 1, which is characterized in that form the adhesive or encapsulation of the enclosed construction
Object can be one or more of thermosetting substance, thermoplastic or elastic material.
4. fire-proof motor according to claim 3, which is characterized in that form the adhesive or encapsulation of the enclosed construction
Object can be the one or several kinds of following substance: silicon rubber, novolac epoxy resin, polyurethane elastomer.
5. fire-proof motor according to claim 1, which is characterized in that in enclosed construction outer surface coating it is following any one
Material forms the insulation enhancement layer: epoxy resin, polyorganosiloxane resin, acrylic resin.
6. fire-proof motor according to claim 1, which is characterized in that conductive in insulation enhancement layer outer surface coated with resins base
Elargol either resin base carbon nano-particle conducting resinl forms the conductive layer.
7. fire-proof motor according to claim 1, which is characterized in that the enclosed construction with a thickness of 0.05-0.5mm,
For the insulation enhancement layer with a thickness of 0.5-1mm, the conductive layer thickness is 0.05-0.1mm.
8. fire-proof motor according to claim 1, which is characterized in that also installation is inside the fire-proof motor with lower sensor
It is at least one or a variety of: temperature sensor, for fire-proof motor heating position carry out temperature test；Gas sensor
Or smell sensor, gas is generated in fire-proof motor to carry out fire alarm for measuring；Non-contact electrostatic detection sensor,
Static value for detection winding surface.
9. a kind of waterproof and dustproof for fire-proof motor, burn-out-proof damage method, which comprises the following steps:.
By being formed with adhesive gluing or with encapsulation object encapsulation in coil windings and electric circuit inside fire-proof motor
Enclosed construction；
It coats to form insulation enhancement layer in the enclosed construction outer surface；
It coats to form conductive layer in the outer surface of the insulation enhancement layer.
10. the waterproof and dustproof of fire-proof motor according to claim 9, burn-out-proof damage method, the method also includes explosion-proof
Installation is inside motor at least one or a variety of of lower sensor: temperature sensor, for the heating position to fire-proof motor
Carry out temperature test；Gas sensor or smell sensor generate gas for measuring to carry out fire alarm in fire-proof motor；
Non-contact electrostatic detection sensor, the static value for detection winding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910608475.1A CN110350705A (en) | 2019-07-05 | 2019-07-05 | The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910608475.1A CN110350705A (en) | 2019-07-05 | 2019-07-05 | The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout |
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| Publication Number | Publication Date |
|---|---|
| CN110350705A true CN110350705A (en) | 2019-10-18 |
Family
ID=68178003
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910608475.1A Pending CN110350705A (en) | 2019-07-05 | 2019-07-05 | The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout |
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| CN (1) | CN110350705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673794A (en) * | 2022-04-11 | 2022-06-28 | 中国电子科技集团公司第三十八研究所 | Explosion-proof valve for hydrogen aerostat |
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| CN208015839U (en) * | 2017-12-30 | 2018-10-26 | 郑州锐达信息技术有限公司 | A kind of intelligent video camera head with warning function |
| CN208316511U (en) * | 2018-05-23 | 2019-01-01 | 江西力玛机电科技有限公司 | A kind of high efficiency and heat radiation formula motor |
| CN109291575A (en) * | 2018-08-22 | 2019-02-01 | 中国航发北京航空材料研究院 | A kind of surface protection type conductive composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220040A (en) * | 1996-05-29 | 1999-06-16 | Abb阿西亚布朗·勃法瑞公司 | Insulated conductor for high voltage winding |
| CN106489183A (en) * | 2014-06-03 | 2017-03-08 | 古河电气工业株式会社 | Insulated electric conductor and its manufacture method |
| CN105754535A (en) * | 2016-03-24 | 2016-07-13 | 中南大学 | Insulating heat-conducting adhesive and preparation method thereof |
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|---|---|---|---|---|
| CN114673794A (en) * | 2022-04-11 | 2022-06-28 | 中国电子科技集团公司第三十八研究所 | Explosion-proof valve for hydrogen aerostat |
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Application publication date: 20191018 |
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