CN108335840A - If cooling mechanism is detachably connected the transformer that umbrella can mow - Google Patents
If cooling mechanism is detachably connected the transformer that umbrella can mow Download PDFInfo
- Publication number
- CN108335840A CN108335840A CN201810269905.7A CN201810269905A CN108335840A CN 108335840 A CN108335840 A CN 108335840A CN 201810269905 A CN201810269905 A CN 201810269905A CN 108335840 A CN108335840 A CN 108335840A
- Authority
- CN
- China
- Prior art keywords
- umbrella
- transformer
- shell
- radiator casing
- cooling mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D43/00—Mowers combined with apparatus performing additional operations while mowing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/18—Liquid cooling by evaporating liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The present invention relates to transformers.A kind of cooling mechanism that sets is detachably connected the transformer that umbrella can mow, it include the shell equipped with transformer oil, external rotor electric machine, umbrella and cooling mechanism, external rotor electric machine includes inner stator and the outer rotor that is vertically arranged, outer rotor is equipped with the blade extended along external rotor radial, pack includes umbrella stem and umbrella cover, the upper end that umbrella stem is connected to shell by thread head attaching nut makes umbrella cover when strutting umbrella cover block on the shell, cooling mechanism includes the radiator casing of same shell connection, circulating pump, bucket below heat-dissipating casing, fan blade, interior stirring blade in radiator casing, lower stirring blade in the bucket below radiator casing and fan electromotor.The present invention has the advantages that good heat dissipation effect, dismounting umbrella is convenient and can mow, and solves the problems, such as that existing transformer lacks sun-shading mechanism, needs manually to go installation point weeding and only poor by the radiator existing heat dissipation effect that radiate.
Description
This case is application number 2016110971186, and on December 02 2016 applying date, title " it is detachable to set cooling mechanism
The divisional application of the transformer that Connectable umbrella can mow ".
Technical field
The present invention relates to transformers more particularly to a kind of cooling mechanism that sets to be detachably connected the transformer that umbrella can mow.
Background technology
Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is winding（It is i.e. primary
Coil, secondary coil）And iron core（Magnetic core）.Major function has：Voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing（Magnetic
Saturation transformer）Deng.It can be divided into, according to use,：Power transformer and special transformer（Electric furnace change, rectification change, industrial frequency experiment become
Depressor, pressure regulator, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformer, electricity
Sub- transformer, reactor, mutual inductor etc.）.Existing transformer has the following disadvantages：It can not be hidden using at outdoor
Sun, aging speed are fast；It needs artificial removal careless when growing grass by transformer, manually goes weeding safety by transformer poor；Only pass through
Radiator radiates, and heat dissipation effect is poor.
Invention content
The present invention provides it is convenient when a kind of good heat dissipation effect, installing and dismounting umbrella and can mow to set cooling mechanism removable
Unload the transformer that Connectable umbrella can mow, solve existing transformer lack sun-shading mechanism, need manually go installation point weeding and
The problem of the heat dissipation effect for radiating existing difference is only carried out by radiator.
The above technical problem is solved by following technical proposal：One kind setting cooling mechanism and is detachably connected umbrella and can mow
Transformer, including transformer body, the transformer body includes the shell equipped with transformer oil, is provided in the shell
The iron core and winding being submerged in transformer oil, which is characterized in that further include external rotor electric machine, umbrella and cooling mechanism, it is described outer
Rotor electric machine includes inner stator and outer rotor, and the inner stator is vertically arranged and constitutes the support leg of the transformer body, institute
It states outer rotor and is equipped with the blade extended along external rotor radial, the pack includes umbrella stem and umbrella cover, and the umbrella stem is matched by thread head
Closing nut and being connected to the upper end of the shell makes umbrella cover when strutting umbrella cover block on the housing, the cooling mechanism packet
Include circulating pump that radiator casing, the driving transformer oil being connected to the shell recycled between radiator casing and shell,
Bucket below heat-dissipating casing, the fan blade of the updraft above radiator casing, in radiator casing
Interior stirring blade, lower stirring blade and fan electromotor in the bucket below radiator casing, the fan electromotor is for driving
Move the fan blade, interior stirring blade and the rotation of lower stirring blade.Umbrella is set on the shell, can be incited somebody to action when use is in outdoor
Umbrella support is opened carries out sun-shading rain-proof to transformer body, to overcoming when existing transformer is mounted on outdoor by direct sunlight
The problem of caused aging block.Meter external rotor electric machine is divided into shell and is supported by the stator of the motor of outer rotor, is tied
Structure compactedness is good；External rotor electric machine designs blade, can be by outer rotor motor driven blade rotation by the grass by transformer
It cuts off, without artificial close when weeding, safety when weeding is good.In use, transformer oil passes through under the action of circulating pump
Heat is lost when radiator casing.The radiation processes of radiator are other than the existing natural heat dissipation by radiator casing, fan
Blade certain driving air-flow flow through from bottom to top radiator casing outer surface play the role of accelerate heat dissipation to improve heat dissipation effect, take to
The mode of upper pumping radiates so that the power of fan blade certain driving air-flow flowing is in the same direction with the power that hot gas rises, to more
It flows away added with the hot-air conducive to radiator casing surface；Fan blade can also play when rotating carries out sunshade to radiator casing
Effect so that the Wen Sheng little of radiator casing caused by the sun, namely radiator casing is preferably radiated；Fan leaf
The timely temperature rise of piece, but due to radiating for upper air-draft-type, therefore air-flow will not shadow by temperature rise in fan blade in time
It rings radiator casing, the temperature for blowing to the air-flow of radiator casing can be caused higher if downward blowing, heat dissipation effect is caused to be deteriorated.
Stirring blade in setting, can improve transformer oil with the heat exchanger effectiveness between radiator casing so that the heat of transformer oil
Quickly fully radiator casing can be passed to me and lose.Bucket is set and bucket is located at the lower section of radiator casing, water
Wen Sheng little caused by the heat that water in bucket is shed by radiator casing, while radiator casing can play and carry out sunshade to bucket
Effect, lower stirring blade is stirred the water in bucket to accelerate the water heat absorption in bucket, so that on bucket
The air themperature of side is relatively low, which can get a promotion to the heat dissipation effect of radiator casing when rising.
Preferably, the lower end of the inner stator is equipped with support seat board.By supporting seat board to be supported on ground when use
To realize the support to the present invention.Stationarity when support can be improved.
Preferably, the support seat board is equipped with the connection unthreaded hole vertically extended.By by lower margin spiral shell when use
Bolt is connected to after connection unthreaded hole realizes that the installation of the present invention is fixed on ground, convenience when fixed is good.
It is vertically extended along the circumferential uniform of the outer rotor preferably, the support seat board is equipped at least three
The tapped through hole of distribution, the tapped through hole internal thread are connected with Level-adjusting bolt.By rotating levelness tune when use
Whole bolt come adjust the present invention installation when levelness.It is convenient when adjustment is horizontal.
Preferably, the outer surface of the radiator casing is equipped with radiating fin.Heat dissipation effect can be improved.
Preferably, the fan electromotor includes motor shaft and the electric machine casing that is fixed on radiator casing, the motor
Axis runs through radiator casing along the vertical direction, and the fan blade, interior stirring blade and lower stirring blade are all connected to the motor
On axis.Structural compactness is good.
Preferably, the nut includes collar nut ontology and the internal thread that is arranged on nut body inner peripheral surface, institute
The inner peripheral surface for stating nut body is equipped with and extends to the straight slot of the other end along one end of nut, and the straight slot is by the internal thread edge
The circumferential of nut body disconnects, and the nut body is connected to the another of straight slot equipped with the side side wall rear thread across the straight slot
Straight slot groove width adjusting screw on the side wall of side.Bolt attaching nut is fixed, easy for assemble or unload.It is locked after nut check logical
Slot groove width adjusting screw and make straight slot reduced width, the result of diminution be to make the more tightly holding of internal thread on bolt,
So that not allowing to be also easy to produce loosening and cause to send out fan electromotor connection loosening between nuts and bolt.
Preferably, the straight slot has two.Locking effect want and spend screw thread execution it is small.
Preferably, two straight slots are uniformly distributed along the circumferential direction of nut body.It can effectively prevent nut generation office
Portion's fragility phenomenon.
Preferably, the peripheral surface of nut body is equipped with power-assisted slot.It is convenient when driving nut rotation.
Preferably, the projection of the radiator casing towards the bucket is located in the bucket or with bucket mistake
It opens.Bucket can collect rainwater on rainy day, water-saving to play the role of.
Present invention tool has the advantage that：Umbrella is set in the top of shell, transformer use can carry out sunshade at outdoor
It keeps off the rain；Meter external rotor electric machine is divided into shell and is supported by the stator of the motor of outer rotor, and structural compactness is good；It is outer to turn
Sub-motor designs blade, can be cut off the grass by transformer by outer rotor motor driven blade rotation, and when weeding is not necessarily to
Artificial close, safety when weeding is good；Cooling mechanism with fan, good heat dissipation effect are set.
Description of the drawings
Fig. 1 is the schematic diagram of the invention when umbrella is in softened state.
Fig. 2 is the enlarged diagram of the external rotor electric machine in the present invention.
Fig. 3 is the axial enlarged diagram of nut.
In figure：Transformer body 1, shell 11, iron core 12, winding 13, umbrella 2, umbrella stem 21, umbrella cover 23, external rotor electric machine 3,
Inner stator 31, outer rotor 32, support seat board 33, connection unthreaded hole 331, foundation bolt 332, blade 321, blade cutting edge 3211,
Tapped through hole 333, Level-adjusting bolt 334, cooling mechanism 4, radiator casing 41, radiating fin 411, communicating pipe 412, cycle
Pump 42, bucket 43, fan blade 44, interior stirring blade 45, lower stirring blade 46, fan electromotor 47, motor shaft 471, motor casing
Body 472, nut 8, nut body 81, internal thread 82, straight slot 83, the side side wall 831 of straight slot, straight slot other side side wall 832,
Straight slot groove width adjusting screw 84, power-assisted slot 85.
Specific implementation mode
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of cooling mechanism that sets is detachably connected the transformer that umbrella can mow, including transformer body 1, umbrella 2,
External rotor electric machine 3 and cooling mechanism 4.
The structure of transformer body 1 is existing structure.I.e. transformer body 1 includes shell 11, iron core 12 and winding 13.Outside
It is filled with transformer oil in shell 11.Iron core 12 and winding 13 are located in shell 11 and are submerged in transformer oil.
Umbrella 2 includes umbrella stem 21 and umbrella cover 23.Umbrella stem 21 is detachably connected on shell 11 by 413 attaching nut 8 of thread head
Upper end intermediate position.
External rotor electric machine 3 includes inner stator 31 and outer rotor 32.Inner stator 31 is vertically arranged and constitutes transformer body 1
Support leg.The lower end of inner stator 31 is equipped with support seat board 33.Outer rotor 32 is equipped with the blade 321 extended along external rotor radial.Knife
Piece 321 has 4 and along the circumferentially distributed of outer rotor 32.
Cooling mechanism 4 include radiator casing 41, circulating pump 42, bucket 43, fan blade 44, interior stirring blade 45, under stir
Mix blade 46 and fan electromotor 47.The outer surface of radiator casing 41 is equipped with radiating fin 411.Radiator casing 41 is connected to by two
Pipe 412 is connected to shell 41.Circulating pump 42 was arranged on a communicating pipe 412.Bucket 43 is located at 41 lower section of radiator casing.Heat dissipation
Projection of the device shell 41 towards bucket 43（I.e. downward projection）It is staggered in bucket or with bucket.Fan electromotor 47 includes motor
Axis 471 and electric machine casing 472.Electric machine casing 472 is fixed on radiator casing 41.Motor shaft 471 runs through heat dissipation along the vertical direction
Device shell 41.Fan blade 44 is located at 41 top of radiator casing.Fan blade 44 is exhausting blade, i.e. updraft.Fan leaf
Piece 44 is located at 41 top of radiator casing.Fan blade 44 is fixed on motor shaft 471.Interior stirring blade 45 is located at radiator casing 41
It is interior and be submerged in transformer oil.Lower stirring blade 46 is connected on motor shaft 471.Lower stirring blade 46 is submerged in bucket 43
In water.
The process that the present invention radiates is：Under the action of circulating pump 42, transformer oil is in shell 11 and radiator casing
It is recycled between 41.The heat transfer that iron core 12 and winding 13 generate is to transformer oil, heat when transformer oil flows through radiator casing 41
Amount is lost by radiator casing 41.47 driving fan blade 44 of fan electromotor, interior stirring blade 45 and the rotation of lower stirring blade 46,
Fan blade 44 rotates certain driving air-flow and flows through radiator casing 41 from bottom to top to take away heat, and lower stirring blade 46 stirs water
Bucket 43 in water and play acceleration evaporation carry out cooling so that the temperature for flowing through the air of radiator casing is relatively low.Interior stirring blade 45
Transformer oil is stirred, transformer oil is enable substantially more to carry out heat exchange with radiator casing.
It is equipped with the connection unthreaded hole 331 vertically extended referring to Fig. 2 support seat boards 33.Connection unthreaded hole 331 is equipped with ground
Foot bolt 332.Support seat board 33 is additionally provided at least three tapped through holes 333.Tapped through hole 333 vertically extends.Screw thread
Through-hole 333 is uniformly distributed along the circumferential direction of outer rotor.333 internal thread of tapped through hole is connected with Level-adjusting bolt 334.Blade
Center line of the plane at 3211 place of cutting edge perpendicular to internal rotor 31.
Referring to Fig. 1 and Fig. 2, installing method of the invention is：By support base 33 on the ground, then the present invention is supported
So that holding of the present invention is horizontal by adjusting Level-adjusting bolt 334.Then it carries out being locked at ground by foundation bolt 332
On face.When needing weeding, external rotor electric machine 3 is driven.The rotation of 3 driving blade 321 of external rotor electric machine will be careless to realize
Partition.In order to avoid people can be driven or be led to by way of remote control close to transformer body 1 when driving external rotor electric machine
5 meters or more of power cord is crossed to open motor start switch mounted on the place that the distance apart from transformer body 1 is 5 meters
It is dynamic.
Referring to Fig. 3, nut 8 includes collar nut ontology 81 and the internal thread 82 being arranged on nut body inner peripheral surface.Spiral shell
The inner peripheral surface of maternal body 81 is equipped with two straight slots 83.Straight slot 83 extends to the other end from axial one end along nut 8.Straight slot 83
Circumferential direction by internal thread 82 along nut body 81 disconnects.Nut body 81 is equipped with 831 rear thread of the side side wall company across straight slot
The straight slot groove width adjusting screw 84 being connected on the other side side wall 832 of straight slot.Two straight slots 83 are along the circumferential equal of nut body 81
Even distribution.The peripheral surface of nut body 81 is equipped with power-assisted slot 85.
Claims (3)
1. a kind of cooling mechanism that sets is detachably connected the transformer that umbrella can mow, including transformer body, the transformer body
Include the shell equipped with transformer oil, the iron core and winding being submerged in transformer oil are provided in the shell, feature exists
In further including external rotor electric machine, umbrella and cooling mechanism, the external rotor electric machine includes inner stator and outer rotor, the inner stator
It is vertically arranged and constitutes the support leg of the transformer body, the outer rotor is equipped with the blade extended along external rotor radial, institute
It states pack and includes umbrella stem and umbrella cover, the upper end that the umbrella stem is connected to the shell by thread head attaching nut makes described unfurl an umbrella
Umbrella cover blocks on the housing when face, and the cooling mechanism includes radiator casing, the driving transformer being connected to the shell
Circulating pump that oil is recycled between radiator casing and shell, is located on radiator casing the bucket below heat-dissipating casing
The fan blade of updraft of side, the interior stirring blade in radiator casing, in the bucket below radiator casing
Lower stirring blade and fan electromotor, the fan electromotor is for driving the fan blade, interior stirring blade and lower stirring blade
Rotation, the fan electromotor include motor shaft and the electric machine casing that is fixed on radiator casing, and the motor shaft is along the vertical direction
Through radiator casing, the fan blade, interior stirring blade and lower stirring blade are all connected on the motor shaft, the nut
Including collar nut ontology and the internal thread being arranged on nut body inner peripheral surface, the inner peripheral surface of the nut body is equipped with edge
One end of nut extends to the straight slot of the other end, and circumferential direction of the straight slot by the internal thread along nut body disconnects, the spiral shell
Maternal body is connected to the straight slot groove width on the other side side wall of straight slot equipped with the side side wall rear thread across the straight slot and adjusts
Screw.
2. the cooling mechanism according to claim 1 that sets is detachably connected the transformer that umbrella can mow, which is characterized in that described
The lower end of inner stator is equipped with support seat board, and the support seat board is equipped with the connection unthreaded hole vertically extended.
3. the cooling mechanism according to claim 2 that sets is detachably connected the transformer that umbrella can mow, which is characterized in that described
Support seat board is equipped at least three and vertically extends the equally distributed tapped through hole of circumferential direction along the outer rotor, the spiral shell
Line through-hole internal thread is connected with Level-adjusting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269905.7A CN108335840A (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269905.7A CN108335840A (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
| CN201611097118.6A CN106952708B (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611097118.6A Division CN106952708B (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108335840A true CN108335840A (en) | 2018-07-27 |
Family
ID=59465319
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810269905.7A Pending CN108335840A (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
| CN201810269533.8A Pending CN108335839A (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
| CN201611097118.6A Active CN106952708B (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810269533.8A Pending CN108335839A (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
| CN201611097118.6A Active CN106952708B (en) | 2016-12-02 | 2016-12-02 | If cooling mechanism is detachably connected the transformer that umbrella can mow |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN108335840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050028A (en) * | 2021-11-01 | 2022-02-15 | 云南通变电器配件有限公司 | Plateau type transformer oil tank and welding technology system |
| CN115119604A (en) * | 2021-03-10 | 2022-09-30 | 创科无线普通合伙 | Grass cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853882B (en) * | 2019-10-23 | 2021-07-16 | 徐州鑫贝克电力设备有限公司 | Oil-immersed transformer based on cooling protection device |
| CN112295261A (en) * | 2020-10-26 | 2021-02-02 | 爱可道生物科技有限公司 | Artichoke production extraction element based on ultrasonic wave |
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- 2016-12-02 CN CN201810269905.7A patent/CN108335840A/en active Pending
- 2016-12-02 CN CN201810269533.8A patent/CN108335839A/en active Pending
- 2016-12-02 CN CN201611097118.6A patent/CN106952708B/en active Active
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| CN203812685U (en) * | 2014-05-13 | 2014-09-03 | 中国长江电力股份有限公司 | Forced-oil circulation air-cooled transformer provided with wet-curtain cooling device |
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| CN105719797A (en) * | 2016-04-21 | 2016-06-29 | 王志玉 | Environmental-protection and energy-saving transformer cooling system |
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| CN115119604A (en) * | 2021-03-10 | 2022-09-30 | 创科无线普通合伙 | Grass cutter |
| CN115119604B (en) * | 2021-03-10 | 2024-04-12 | 创科无线普通合伙 | Mower |
| CN114050028A (en) * | 2021-11-01 | 2022-02-15 | 云南通变电器配件有限公司 | Plateau type transformer oil tank and welding technology system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106952708B (en) | 2018-07-06 |
| CN106952708A (en) | 2017-07-14 |
| CN108335839A (en) | 2018-07-27 |
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Application publication date: 20180727 |