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35results about How to "Reduce operating temperature rise" patented technology
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Disk-type coreless permanent-magnetic brushless DC (direct current) motor
InactiveCN103384107AImprove sealingIncrease magnetic loadElectronic commutation motor controlMagnetic circuit stationary partsElectricityEngineering
The invention relates to disk-type DC motors, particularly to a disk-type coreless permanent-magnetic brushless DC motor. The technical scheme comprises that the disk-type coreless permanent-magnetic brushless DC motor comprises two housings which are connected in a sealed mode, two end covers correspondingly arranged on the housings, and two bearings correspondingly arranged on the end covers. Each end cover is provided with a stop flange which extends to the end surface of the corresponding bearing, and an O-shaped seal ring is arranged between each stop flange and the end surface of the corresponding bearing. The disk-type coreless permanent-magnetic brushless DC motor also comprises an armature winding, the armature winding is in a ring shape and comprises an arc-shaped first part away from the a shaft, an arc-shaped second part close to the shaft, and arc-shaped third parts connected between both ends of the first part and the corresponding ends of the second part; the connection line of the centers of the first part and the second part is disposed in the middle section of the armature winding; the inner diameter of the first part is 1.5-2 times as large as that of the second part. The disk-type coreless permanent-magnetic brushless DC motor has good sealing performance and a high magneto-electricity conversion rate.
Owner:HUZHOU YUNTIAN NEW ENERGY TECH
Electric push device
ActiveCN101888135AReduce operating temperature riseSave energyMechanical energy handlingSelf lockingEngineering
The invention discloses an electric push device, which comprises a motor (1) and a shell (2). An axially moving push rod (3) is arranged inside the shell (2); a lead screw (4) is arranged inside the push rod (3); and a helix angle of the lead screw (4) is greater than a self-locking angle. The electric push device is characterized in that: a nut (5) which forms a screw thread pair with the lead screw (4) is arranged at an inner end of the push rod (3); a supporting bearing (8) is arranged on an inner section of the lead screw (4); the inner end of the lead screw (4) is connected with an axis of the motor (1) and is provided with an electromagnet (6) and a braking pair (7); a spring (6b) which acts on a movable core (6a) is arranged in a fixed core of the electromagnet (6); the braking pair (7) comprises a rotating brake disc (7a) and a movable brake disc (7b); the rotating brake disc (7a) is connected with the axis of the motor (1); and the movable brake disc (7b) is connected with the movable core (6a) of the electromagnet (6) and can axially linearly move together with the movable core (6a).
Owner:长沙三占惯性制动有限公司
F level heating solvent-free solvent-impregnated resin suitable for subatmospheric pressure
ActiveCN101319086AReduce generationSuitable for the development needs of green environmental protectionPlastic/resin/waxes insulatorsThermal stateSolvent free
The invention discloses a vacuum pressure F-grade heating solvent-free solvent impregnated resin, comprising the following compositions by weight portion: 100 portions of an epoxide resin, 2 to 4 portions of a stabilizing agent, 80 to 120 portions of fluid estolide and 10 to 20 portions of a plasticizer, wherein, the epoxide resin is a bisphenol A-type expoxide resin, the epoxide resin and the stabilizing agent are mixed into a composition A, the fluid estolide and the plasticizer are mixed into a composition B, and 100 portions of the composition A and 80 to 120 portions of the composition B are mixed. The composition A and the composition B are respectively packaged and stored and are used after mixed according to the ratio of 1 to 0.8-1.2. The solvent impregnated resin is used together with special dry mica tape and special moderate-resin mica tape which contain a curing accelerating agent and are matched with the solvent impregnated resin specially. The vacuum pressure F-grade heating solvent-free solvent impregnated resin has the advantages of innocuousness, innocuity, good thermal state mechanical intensity and low possibility of deformation.
Owner:上海同立电工材料有限公司
Superconductive radiating motor
InactiveCN102255430AAchieve the intended effectImprove cooling conditionsCooling/ventillation arrangementLiquid cooling systemCooling capacity
The invention provides a superconductive radiating motor, which greatly improves cooling capacity and is high in power density, small in size, light in weight and high in efficiency. The superconductive radiating motor comprises a shell part, a stator part and a rotor part, wherein the shell part comprises a pipeline-shaped shell; and the stator part and the rotor part are positioned in an inner cavity of the shell. The superconductive radiating motor also comprises a superconductive radiating liquid cooling system, wherein a liquid storage cavity is formed in a body wall of the shell; the superconductive radiating liquid cooling system comprises a radiator, a radiating fan and a connecting pipe for connecting the radiator and the liquid storage cavity; heat superconductive liquid is positioned in a closed channel which is formed by the liquid storage cavity, the radiator and the connecting pipe; the heat superconductive liquid cooling system comprises a liquid storage box which is communicated with the radiator and stores the heat superconductive liquid; the inner cavity of the shell has a front-end opening and a rear-end opening; a front end cover closes the front-end opening; and a rear end cover is arranged at the rear-end opening of the shell and closes the rear-end opening.
Owner:YINLONG ENERGY CO LTD
Busbar mounting method without switching structure
PendingCN107453307AReduce in quantityReduce operating temperature riseCooling bus-bar installationsTotally enclosed bus-bar installationsElectrical conductorBusbar
The invention provides a busbar mounting method without a switching structure. which comprises the following steps of forming a housing by a cover plate and a side plate; forming segmented busbars by built-in phase wire conductors; between the busbar segments, connecting the phase wire conductor with a conductor connecting plate of a joining device, and directly connecting the side plate with the joint pressing plate of the joining device for fixing. Side plate connectors are saved, and low number of components is realized. High heat radiation efficiency and low operation temperature increase of a busbar system are realized. Main components are one-time extruded section bars. The busbar mounting method further has advantages of simple production and manufacturing process, low labor intensity of workers, high connection reliability, high convenience in mounting and transportation, high corrosion resistance, small weight and attractive appearance.
Owner:浩翔电气集团有限公司
Motor cooling structure based on cooling liquid
PendingCN108429402AImprove efficiencyReduce complex cooling structuresCooling/ventillation arrangementSupports/enclosures/casingsEngineeringCooling fluid
The invention discloses a motor cooling structure based on cooling liquid. A cooler is installed at the top of a shell; a sealing hood penetrates through the inner diameter of a stator iron core to cover the stator iron core, extends into the cooler, and is isolated from the space of a rotor iron core in the shell to form a closed space; the cooling liquid is injected into the sealing hood to forma cooling liquid pool; vent pipes are located at the axial outer side of the stator iron core, and the two ends of each vent pipe are communicated with the space of the rotor iron core; several subplates are connected between the rotary shaft and the rotor iron core, and iron core axial ducts are formed by the spaces among the subplates; an air gap is formed between the rotor iron core and the inner circumferential face of the sealing hood; an inner fan is fixed to the shaft extension end of the rotary shaft, and is used for generating power airflow in a rotor circulating air path composed ofthe space of the rotor iron core, the vent pipes, the iron core axial ducts, rotor iron core radial ducts and the air gap. The motor cooling structure has a stator cooling loop and a rotor cooling loop which are independent from each other, however, both the stator cooling loop and the rotor cooling loop absorb heat through the cooling liquid, the complicated cooling structure is reduced, the using efficiency of the cooling liquid is improved, the cost is lowered, and the reliability is improved.
Owner:GUANGDONG SHANGSHUI ENERGY TECH
High-heat-conductivity insulating structure and manufacturing method thereof
ActiveCN104795923AImprove thermal efficiencyReduce operating temperature riseWindings insulation materialWindings insulation shape/form/constructionMicaVarnish
The invention discloses a high-heat-conductivity insulating structure and a manufacturing method thereof. The high-heat-conductivity insulating structure comprises an iron core and an electromagnetic wire embedded in the iron core, a heat conducting film, a mica tape and an alkali-free glass tape are sequentially arranged between the electromagnetic wire and the iron core, an opening of the iron core is sealed by a slot wedge, and an inner gap of the iron core is provided with dipping varnish by means of dipping. The high-heat-conductivity insulating structure has the advantages that due to the fact that the heat conducting film, the mica tape and the alkali-free glass tape are sequentially arranged between the electromagnetic wire and the iron core to form a heat conducting passage in the whole insulating structure, internal heat conducting efficiency of a motor is improved, heat in the motor can be transferred to a cooling medium more quickly, and accordingly operation rise of the motor can be lowered to realize cooling of an insulation operation environment so as to prolong insulation service life of the motor.
Owner:CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
Motor self-driven cooling structure based on cooling liquid
PendingCN108429403AImprove work efficiencyLow costMagnetic circuit rotating partsCooling/ventillation arrangementVentilation tubeSelf driven
The invention discloses a motor self-driven cooling structure based on cooling liquid. A cooler is installed at the top of a shell; a shaft-driven outer fan is driven by a rotary shaft to rotate coaxial to the rotary shaft; a sealing hood penetrates through the inner diameter of a stator iron core and extends into the cooler, and is isolated from the space of a rotor iron core in the shell to forma closed space; the cooling liquid is injected into the sealing hood; vent pipes are located at the axial outer side of the stator iron core, and the two ends of each vent pipe are communicated withthe space of the rotor iron core; several subplates are connected between the rotary shaft and the rotor iron core, and iron core axial ducts are formed by the spaces among the subplates; an air gap is formed between the rotor core and the inner circumferential face of the sealing hood; an inner fan is used for generating power airflow in a rotor circulating air path composed of the space of the rotor iron core, the vent pipes, the iron core axial ducts, rotor iron core radial ducts and the air gap. The motor self-driven cooling structure has a stator cooling loop and a rotor cooling loop which are independent from each other, but both the stator cooling loop and the rotor cooling loop absorb heat through the cooling liquid, the using efficiency of the cooling liquid is improved, the costis lowered, and the cooling efficiency is improved.
Owner:GUANGDONG SHANGSHUI ENERGY TECH
F-level heat-proof solvent-impregnated resin suitable for subatmospheric pressure and normal temperature
ActiveCN101319087AReduce generationSuitable for the development needs of green environmental protectionPlastic/resin/waxes insulatorsVacuum pressurePlasticizer
The invention discloses an F-grade heat-resisting solvent impregnated resin suitable for vacuum pressure and normal temperature. The F-grade heat-resisting solvent impregnated resin is prepared by mixing 100 portions of a composition A and 80 to 120 portions of a composition B, wherein, according to weight portion, the composition A is prepared by mixing 60 to 90 portions of I-epoxide resin, 10 to 40 portions of II-epoxide resin and 2 to 4 portions of a stabilizing agent; the composition B is prepared by mixing 80 to 120 portions of fluid estolide and 10 to 20 portions of a plasticizer; and the I-epoxide resin is a bisphenol A-type expoxide resin. The composition A and the composition B are respectively packaged and stored separately and are used by mixing according to the ratio of 1 to 0.8-1.2. The solvent impregnated resin is used together with special dry mica tape and special moderate-resin mica tape which contain a curing accelerating agent and are matched with the solvent impregnated resin specially. The F-grade heat-resisting solvent impregnated resin has the advantages of cleanliness, environment protection, rapid high temperature solidification, small mass loss in the curing process and high purity quotient of each component.
Owner:上海同立电工材料有限公司
Subway gearbox box
ActiveCN104048022BImprove the lubrication effectImprove sealingGearboxesGear lubrication/coolingAngle alphaPetroleum engineering
The invention discloses a box body of a subway gear box. The box body comprises an upper box body and a lower box body, wherein the inner wall of the upper box body is provided with a large bearing oil collecting groove and a small bearing oil collecting groove, the large bearing oil collecting groove consists of a first box wall section and a first oil groove baffle plate and is positioned at the upper part of a large bearing seat support hole, the bottom of the large bearing oil collecting groove is communicated with the large bearing seat support hole through a large bearing oil inlet hole, the upper part of the large bearing oil collecting groove is provided with an oil baffle plate, the small bearing oil collecting groove consists of a second box wall section and a second oil groove baffle plate and is positioned at the upper part of a small bearing seat support hole, the annular section of the small bearing oil collecting groove is in semicircular extending around the small bearing seat support hole of the upper box body, an included angle alpha between the axial line of an inclined section and the horizontal center line is 15 degrees to 30 degrees, one end of the inclined section is connected with the annular section, the other end of the inclined section extends in the direction towards the large bearing support hole or extends to the large bearing seat support hole, and the small bearing oil collecting groove is communicated to the small bearing seat support hole. The box body has the advantages that a gear box bearing can be effectively and reliably lubricated, and the heat radiation effect is good.
Owner:CRRC QISHUYAN INSTITUTE CO LTD
Low-temperature and shock-resistant semiconductor package structure
ActiveCN104766835AReduce operating temperature riseExtended service lifeSemiconductor/solid-state device detailsSolid-state devicesOperating temperatureHeat sink
The invention discloses a low-temperature and shock-resistant semiconductor package structure which comprises a functional device, a packaging layer and a cooling and heat conduction device. According to the scheme, direct stress of the packaging layer will not be borne by a chip, so the chip can bear high shake stress; in addition, thanks to auxiliary heat dissipation of heat dissipation fins and quick heat conduction of elastic heat conduction colloids, it can be guaranteed that a semiconductor product is in a low operating temperature rise state.
Owner:KUNSHAN POLYSTAR ELECTRONICS
High-efficiency energy-saving electric motor with internal shielding ventilation opening
InactiveCN104505986AReduce operating temperature riseCooling/ventillation arrangementSupports/enclosures/casingsForced-airLoad following power plant
The invention relates to a high-efficiency energy-saving electric motor with an internal shielding ventilation opening. Multiple ventilation openings are processed on the rear end cap of the fan end of the electric motor. An internal shielding assembly can be embedded in the ventilation openings. Internal and external fans are coaxially installed inside and outside the rear end cap. The forced air cooling system of the overall electric motor is formed by motor fan covers, the internal and external fans and the rear end cap with the inlet and outlet ventilation openings. Compared with another patent technology named "high-efficiency energy-saving electric motor with forced inner circulation heat radiation", temperature rise of operation at full load is reduced for 10K on the basis that other parameters are unchanged or slightly enhanced.
Owner:WEIHAI SHUN YI ELECTRIC MOTOR CO LTD
Increasable capacity integrated installation of high-low voltage variable frequency speed control
ActiveCN1671036ATroubleshooting Underpower Operation IssuesImprove efficiencyAC motor controlDC motor speed/torque controlFrequency changerLow voltage
A capacity increased low voltage frequency variable speed regulation integrated device, which is characteristic of that the output end of high voltage switch cabinet connected with the high voltage input end of transformer whose low voltage output end connected with the incoming line end of input side switch of frequency variator in power frequency / frequency variation switching device, the outgoing line end of switch connected with the input end of low voltage frequency variator. Said invention has advantages of high power, high efficiency, high reliability, sub harmonic, low temperature raising and energy saving etc.
Owner:吕志斗 +1
Device and method for increasing capacity of oil-immersed transformer
InactiveCN109950024AImprove safety and reliabilityReduce construction difficultyTransformers/inductances coolingTransformerLow voltage
The invention discloses a device for increasing the capacity of an oil-immersed transformer. The device comprises twelve groups of finned radiators, six cooling fans, and a control box. The finned radiators are arranged on a return pipe of a transformer body. Eight groups of finned radiators are located at the high-voltage side of the transformer body, and four groups of finned radiators are located at the low-voltage side of the transformer body. The cooling fans are arranged on the finned radiators. Four cooling fans are arranged on the finned radiators on the high-voltage side of the transformer body, and two cooling fans are arranged on the finned radiators on the low-voltage side of the transformer body. The control box is positioned outside the transformer body and is connected witha motor of the cooling fans. The invention discloses a method for increasing the capacity of an oil-immersed transformer. The transformer has the beneficial effects that on the premise that the transformer body is kept unchanged, only the cooling system equipment of the transformer body is replaced. Therefore, the capacity increasing requirement of the transformer is met.
Owner:DATANG ENVIRONMENT IND GRP
A box-type high-voltage power capacitor
InactiveCN109003811AImprove reliabilityReduce operating temperature riseCapacitorsEngineeringThermal expansion
The invention relates to a box-type high-voltage power capacitor, comprising a shell, a core and a compensating heat dissipation device; the shell is a hollow structure made of a stainless steel plate, and the gap inside is filled with an insulating impregnating agent; The core is mounted in the shell and immersed in the insulation impregnating agent; A sleeve connected with the core is arranged on the top of the shell; The compensating heat dissipation device is mounted on the outer side wall of the shell, and expands or contracts according to the thermal expansion and cold contraction of theinsulating impregnating agent to compensate for volume change, and also causes the circulating flow of the insulating impregnating agent to accelerate the dissipation of heat inside the shell. The invention has the advantages that the stainless steel plate is directly used on the capacitor instead of a common steel plate, and the surface treatment cost can be saved; the compensation heat dissipation device replaces an expander with more solder joints, reduces the possibility of oil leakage, improves the reliability of the capacitor, reduces the operation temperature rise of the capacitor andprolongs the service life of the capacitor.
Owner:GUILIN POWER CAPACITOR
Evaporative cooling underground transformer
InactiveCN112885574AImprove fire safetyImprove cooling efficiencyTransformers/inductances coolingThermodynamicsTransformer
The invention discloses an evaporative cooling underground transformer comprising a transformer body, a box body for containing the transformer body and cooling liquid arranged in the box body and immersing the transformer body, and the cooling liquid has the non-combustible characteristic and the phase change characteristic and is evaporated into gas after absorbing heat; the evaporative cooling underground transformer further comprises a heat dissipation assembly used for diffusing heat absorbed by the cooling liquid to the outside so as to reduce the temperature of the cooling liquid, the heat dissipation assembly comprises at least one evaporative heat dissipation device, and the cooling liquid absorbs heat to be evaporated into gas and then exchanges heat with the outside through the evaporative heat dissipation device. And the gas is condensed into liquid and the liquid flows back into the box body. The non-combustible effect is achieved by changing an insulating cooling medium of the underground transformer; the evaporation heat dissipation device is arranged, the cooling and heat dissipation efficiency of the underground transformer is improved, effective heat dissipation can be conducted on the transformer in the application environment such as a pit where ventilation is not smooth and heat dissipation is difficult, and the operation safety coefficient of the transformer is improved.
Owner:深圳市奥电高压电气有限公司
Bus duct
InactiveCN108173211AImprove cooling efficiencyNice appearanceCooling bus-bar installationsTotally enclosed bus-bar installationsEngineeringAlloy
The invention relates to a bus duct. A casing composed of side plates and a cover plate is internally provided with a phase wire conductor, segments of the bus duct are connected through joint devices, joint bolt end portions of the joint devices, joint nuts and joint pressure plates among outer-most-layer insulation baffle plates are formed by section bars through one-time pultrusion molding, cross sections of the section bars are generally C-shaped structures, a wing-edge outer side of the C-shaped structures is provided with multiple heat radiation reinforcement ribs, an inner side is provided with limit grooves for limiting side plate connection members, right-angle connection portions of long edges and short edges of the side plate connection members are provided with reinforcement ribs projecting outwards, and centers of the reinforcement ribs have thread connection holes. The bus duct is advantaged in that disc-shaped springs are clamped in inner chambers of the C-shaped structures of joint device pressure plates, width dimensions of opening portions of the C-shaped structures of the joint device pressure plates mutually adapt to width dimensions of the joint nuts, materialsof the joint device pressure plates and the side plate connection members are aluminum alloy, the quantity of parts is small, connection is reliable, mounting and transportation are convenient, corrosion resistance performance is good, weight is light, and appearance is attractive.
Owner:镇江凯勒电力科技有限公司
Coreless permanent magnet power generation and electric device
ActiveCN105990975AReduce copper lossCopper Loss EliminationElectronic commutation motor controlMagnetic circuit rotating partsCopper lossMagnet
The invention relates to a coreless permanent magnet power generation and electric device. The power generation device comprises a shaft body, a shell and a power generation component. The shell and the shaft body can relatively rotate. The power generation component comprises a rotor component and a stator component. The rotor component comprises a magnet yoke and magnets which are installed on the magnet yoke. The stator component comprises an integrated coil. The magnet yoke comprises at least one cylindrical part which is coaxial with the shaft body and at least one dish-shaped part which is perpendicular to the shaft body. The integrated coil comprises at least one cylindrical part which is coaxial with the shaft body and at least one dish-shaped part which is perpendicular to the shaft body. The cylindrical parts of the magnet yoke and the integrated coil are opposite, and the opposite surfaces of the cylindrical parts of the magnet yoke are provided with magnets. The dish-shaped parts of the magnet yoke and the integrated coil are opposite, and the opposite surfaces of the dish-shaped parts of the magnet yoke are provided with magnets. The coil is integrated so that copper loss can be reduced, damping and iron loss can be eliminated, driving power can be eliminated, thermal loss can be reduced, the size is small, the weight is low, the material can be saved, the speed regulation range is wide and the precision is high.
Owner:姜志深
Internal circulation oil-filled submersible motor with double-layer shell
PendingCN110571973AImprove cooling effectSpeed up heat exchangeCooling/ventillation arrangementSupports/enclosures/casingsControl engineeringThrust bearing
The invention discloses an internal circulation oil-filled submersible motor with a double-layer shell, and relates to the technical field of submersible motors. The submersible motor specifically comprises a fully-enclosed outer shell and an inner shell coaxially fixed in the outer shell, wherein the inner shell is provided with a hole leading to an inner cavity of the outer shell, the front endand the rear end of the outer shell are respectively provided with a front end cover and a rear end cover, the front end cover is provided with a front thrust bearing, the rear end cover is provided with a rear thrust bearing, a motor rotating shaft is arranged between the front thrust bearing and the rear thrust bearing, the motor rotating shaft is arranged in the inner shell of the motor, one end of the motor rotating shaft penetrates through the front end cover, a rotor is fixed in the middle of the motor rotating shaft, a stator is arranged in the inner shell of the motor, the stator is arranged at the outer end of the rotor and corresponds to the rotor in position, and a heat dissipation module is arranged in the motor to drive hydraulic oil to circularly flow between the inner shelland the outer shell of the motor. By adopting the motor double-layer shell structure and the motor heat dissipation module, an additional power device does not need to be installed, the circulation flow of hydraulic oil in the motor is realized, and the heat dissipation capability of the motor is enhanced.
Owner:HARBIN UNIV OF SCI & TECH
Ironless permanent magnet power generation and electric device
ActiveCN105990975BReduce copper lossCopper Loss EliminationElectronic commutation motor controlMagnetic circuit rotating partsEngineeringMagnet
Owner:姜志深
Double-equal pole double-section stator/rotor reluctance generator
InactiveCN101964575BImprove performanceImprove efficiencyDC commutatorElectric machineVoltage regulation
The invention relates to a double-equal pole double-section stator / rotor reluctance generator, comprising two sections of stators and rotors of a salient pole structure or a non-salient-pole structure formed by laminating silicon-steel plates. A stator salient pole is provided with armature concentrated windings or layer windings; the windings are connected in series or in parallel according to the N-N polarity of the armature windings to form a phase, and the windings are connected in series or in parallel according to the S-S polarity of the armature windings to form the other phase; the rotors are equipped with rotating magnetic poles with the same pole number with the stators, and the adjacent pole windings of the rotors are connected in series or in parallel to form a plurality of N and S groups; the rotors can adopt excitation magnetic poles and permanent magnetic poles in different forms and permanent magnetic and electro-magnetic mixed poles, and a rotor excitation device is arranged on a motor shaft; each rotor can be divided into an inner rotor and an outer rotor; and the armature windings can be arranged on the stators or the rotors. In the invention, by adopting an equal-pole-number stator / rotor technology and series / parallel connection dynamic combination of the windings, output voltage can be regulated conveniently, the utilization ratio of the windings is improved, and power density and efficiency of the generator are enhanced.
Owner:张世清
Busway without transfer structure
InactiveCN108183443AReduce in quantityReduce operating temperature riseCooling bus-bar installationsButt joining bus-barsElectrical conductorBusbar
The embodiment of the present invention provides a busway without a transfer structure. The heat dissipation performance is improved through a heat-radiation type connector pressing plate, the heat dissipation efficiency is high, and the operation temperature rise of a busbar system is low. Main components including a busbar side plate, a cover plates, a connector pressing plate and a side plate connection piece are made of aluminum alloy materials and are profiles formed in one pultrusion process, the production and manufacturing process is simple, and the labor intensity of workers is low. Wing edges of the connector pressing plate are provided with multiple heat dissipating reinforcing ribs facing an inner side of a busway phase line conductor, joints between adjacent busbar groove sections are directly connected to a busway cover plate and an upper plate cover plate at the same time through boss inner threaded holes in the heat dissipating reinforcing ribs at two ends of the jointpressing plate, and a central upward protruding part has an open groove to form a C-shaped structure to clamp a joint belleville spring. The insulation protection level is high, parts are light, the corrosion resistance performance is good, a surface processing process is not needed, the busway can be directly cut and used after pultrusion, the number of parts is small, the connection is reliable,and the installation and transportation are convenient.
Owner:镇江凯勒电力科技有限公司
Disk Type Ironless Permanent Magnet Brushless DC Motor
InactiveCN103384107BImprove sealingIncrease magnetic loadElectronic commutation motor controlMagnetic circuit stationary partsElectricityEngineering
The invention relates to disk-type DC motors, particularly to a disk-type coreless permanent-magnetic brushless DC motor. The technical scheme comprises that the disk-type coreless permanent-magnetic brushless DC motor comprises two housings which are connected in a sealed mode, two end covers correspondingly arranged on the housings, and two bearings correspondingly arranged on the end covers. Each end cover is provided with a stop flange which extends to the end surface of the corresponding bearing, and an O-shaped seal ring is arranged between each stop flange and the end surface of the corresponding bearing. The disk-type coreless permanent-magnetic brushless DC motor also comprises an armature winding, the armature winding is in a ring shape and comprises an arc-shaped first part away from the a shaft, an arc-shaped second part close to the shaft, and arc-shaped third parts connected between both ends of the first part and the corresponding ends of the second part; the connection line of the centers of the first part and the second part is disposed in the middle section of the armature winding; the inner diameter of the first part is 1.5-2 times as large as that of the second part. The disk-type coreless permanent-magnetic brushless DC motor has good sealing performance and a high magneto-electricity conversion rate.
Owner:HUZHOU YUNTIAN NEW ENERGY TECH
Semi-direct drive megawatt-level permanent-magnet windmill generator
ActiveCN102005841BOvercome the defects of loose fixationGuaranteed reliabilityMagnetic circuit rotating partsMagnetic circuit stationary partsPermanent magnet rotorArchitectural engineering
The invention discloses a semi-direct drive megawatt-level permanent-magnet windmill generator which relates to the technical field of windmill generators. The semi-direct drive megawatt-level permanent-magnet windmill generator comprises a permanent magnet fixing structure, a cooling ventilation structured bearing insulating structure and a stator core compaction structure, wherein the permanentmagnet fixing structure comprises a magnetic steel fixed mount and a stainless steel bolt, and the magnetic steel fixed mount is used for installing the permanent magnet; the bottom of the magnetic steel fixed mount is closely laminated with the permanent magnet; joint lugs on both ends of the bottom of the magnetic steel fixed mount are provided with through holes which are matched with the stainless steel bolt; and the magnetic steel fixed mount is connected with a rotor cylinder through the stainless steel bolt. In the invention, the defect of unfirm fixation of the prior high-power surface type permanent-magnet rotor permanent magnet on the rotor is overcome, thereby ensuring the reliability and efficiency of the generator, and the defects in the prior ventilation structure is also overcome, thereby increasing the length of the wind path, enhancing the heat elimination efficiency and further effectively lowering the operation temperature rise of the motor.
Owner:DONGFANG ELECTRIC MACHINERY
Increasable capacity integrated installation of high-low voltage variable frequency speed control
ActiveCN1314197CTroubleshooting Underpower Operation IssuesImprove efficiencyAC motor controlConversion without intermediate conversion to dcFrequency changerLow voltage
A capacity increased low voltage frequency variable speed regulation integrated device, which is characteristic of that the output end of high voltage switch cabinet connected with the high voltage input end of transformer whose low voltage output end connected with the incoming line end of input side switch of frequency variator in power frequency / frequency variation switching device, the outgoing line end of switch connected with the input end of low voltage frequency variator. Said invention has advantages of high power, high efficiency, high reliability, sub harmonic, low temperature raising and energy saving etc.
Owner:吕志斗 +1
F-level heat-proof solvent-impregnated resin suitable for subatmospheric pressure and normal temperature
ActiveCN101319087BReduce generationSuitable for the development needs of green environmental protectionPlastic/resin/waxes insulatorsVacuum pressurePlasticizer
The invention discloses an F-grade heat-resisting solvent impregnated resin suitable for vacuum pressure and normal temperature. The F-grade heat-resisting solvent impregnated resin is prepared by mixing 100 portions of a composition A and 80 to 120 portions of a composition B, wherein, according to weight portion, the composition A is prepared by mixing 60 to 90 portions of I-epoxide resin, 10 to 40 portions of II-epoxide resin and 2 to 4 portions of a stabilizing agent; the composition B is prepared by mixing 80 to 120 portions of fluid estolide and 10 to 20 portions of a plasticizer; and the I-epoxide resin is a bisphenol A-type expoxide resin. The composition A and the composition B are respectively packaged and stored separately and are used by mixing according to the ratio of 1 to 0.8-1.2. The solvent impregnated resin is used together with special dry mica tape and special moderate-resin mica tape which contain a curing accelerating agent and are matched with the solvent impregnated resin specially. The F-grade heat-resisting solvent impregnated resin has the advantages of cleanliness, environment protection, rapid high temperature solidification, small mass loss in the curing process and high purity quotient of each component.
Owner:上海同立电工材料有限公司
Coreless coil and motor with same
PendingCN110380546AReduce circulation lossReduce running lossWindings conductor shape/form/constructionEngineeringCounter-electromotive force
The invention relates to a coreless coil and a motor with the same. The coreless coil comprises multiple layers of coils installed in an air gap space between a stator and a rotor of the motor. The multi-layer coil comprises at least two single-layer coils, wherein the single-layer coils are coreless coils. The axial center lines of all the layers of coils are not on the same straight line, and the corresponding induction counter electromotive forces of all the layers of coils are the same and used for restraining circulation of the multi-layer coil. Compared with the prior art, the coreless coil has the advantages that the operation loss and temperature rise of the motor are reduced.
Owner:SHANGHAI MOONS ELECTRICAL APPLIANCE
Dry-type air-core reactor with interchangeable splicing structure
PendingCN110491648AAccurate circumferenceImproved inductance value accuracyTransformers/inductances coils/windings/connectionsGlass fiberEpoxy
The utility model discloses a dry-type air-core reactor with an interchangeable splicing structure. The reactor comprises a plurality of windings and a transition clamping piece clamp, and the transition clamping piece clamp is divided into an exposed part and a pre-embedded part from top to bottom. The wire of each winding is connected with the pre-embedded part of the transition clamping piece clamp; the windings transversely wind the glass fiber wounded by and soaked in epoxy resin so as to form an independent winding package; the pre-embedded part of the transition clamping piece clamp isfixedly pre-embedded in the winding packaged; an upper star-shaped support and a lower star-shaped support are arranged on the upper surface and the lower surface of the winding package respectively;the exposed part of the transition clamping piece clamp is fixedly connected with the upper star-shaped support and the lower star-shaped support; and incoming and outgoing lines of the dry-type air-core reactor are led out through the star-shaped supports. Each package is independently wound, so that the circumference of the electromagnetic wire is more accurate, and the inductance precision of the reactor can be improved; the paint on the surface of each package can be completely covered, so that the problem that the paint between the surfaces of the package of the traditional structure is not completely covered is solved; and when a single package fails, targeted disassembly and interchange can be performed, so that raw materials is savled and labor cost is reduced.
Owner:凌海科诚电气有限责任公司
A metal film filter capacitor for frequency converter
ActiveCN105826075BIncrease the breakdown electric field strengthExtended service lifeThin/thick film capacitorFixed capacitor dielectricPolyesterZinc metal
The invention provides a metal thin film filtering capacitor for a frequency converter. The filtering capacitor includes a core assembly which is formed by wrapping at least one group of thin film layer which includes a double face metallization polypropylene thin film or a double face metallization polyester thin film and a medium layer, wherein the double face metallization polypropylene thin film or the double face metallization polyester thin film is provided with a metal layer separately on the upper face and the lower face of the polypropylene thin film or the polyester thin film, and one metal layer is an aluminum metal layer and the other metal layer is a zinc metal layer. The filtering capacitor also includes an encapsulated layer which is wrapped in the peripheral side of the core assembly. The filtering capacitor further includes a pin which is connected to the core assembly and extends beyond the encapsulated layer. According to the invention, the metal thin film filtering capacitor for the frequency converter is characterized by high breakdown electric field intensity, long service life, and excellent self-healing property.
Owner:东莞怡德电子有限公司
Chip packaging structure and vehicle
PendingCN112466868AReduce operating temperature riseAvoid wiringSemiconductor/solid-state device detailsSolid-state devicesElectrically conductiveElectrical and Electronics engineering
The invention relates to the technical field of chips, and particularly relates to a chip packaging structure and a vehicle. The chip packaging structure comprises a first electric conduction and heatconduction piece, a second electric conduction and heat conduction piece and a first electric conduction and heat conduction elastic piece, wherein the chip is located between the first electric conduction and heat conduction piece and the second electric conduction and heat conduction piece, and the first electric conduction and heat conduction elastic piece is located between the first electricconduction and heat conduction piece and the chip. According to the invention, a power device or module adopts double-sided pressure elastic contact, so that on the one hand, the packaging structurecan form double-sided heat dissipation, and the working condition temperature rise of the power chip and derived devices and modules thereof is further reduced; and on the other hand, a wiring mode ina bonding process is avoided, parasitic inductance in a device or a module is reduced, and the performance of the chip is improved, so that the overall performance is improved.
Owner:BEIJING NEW ENERGY VEHICLE TECH INNOVATION CENT CO LTD
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