CN108777221A - A kind of dry-type transformer aluminium alloy folder - Google Patents
A kind of dry-type transformer aluminium alloy folder Download PDFInfo
- Publication number
- CN108777221A CN108777221A CN201810556499.2A CN201810556499A CN108777221A CN 108777221 A CN108777221 A CN 108777221A CN 201810556499 A CN201810556499 A CN 201810556499A CN 108777221 A CN108777221 A CN 108777221A
- Authority
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- China
- Prior art keywords
- clamping piece
- aluminium alloy
- upper clamping
- dry
- type transformer
- 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
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 229910000755 6061-T6 aluminium alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003755 preservative agent Substances 0.000 claims abstract description 10
- 230000002335 preservative effect Effects 0.000 claims abstract description 10
- 238000007747 plating Methods 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
A kind of dry-type transformer aluminium alloy folder, include the upper clamping piece and lower clamping piece made of 6061-T6 aluminium alloys, to substitute now commonly used steel construction folder, 6061-T6 aluminum alloy surface anodizeds, anodic oxidation film thickness is 8-10 μm, can greatly improve the corrosion resisting property on upper and lower folder surface；Upper and lower folder intensity is calculated using finite element modeling, the lifting of upper and lower clamp dry type transformer, handling, transport and overturning operating mode are calculated, optimizes the cross sectional shape of upper and lower folder, reaches the cost for reducing upper and lower folder；By reducing the use of upper and lower folder welding, to improve the intensity of upper and lower folder；Increase elastic washer in iron core clamping, coil compression, steel structure bolt connecting portion, clamping force reduces phenomenon caused by being expanded with heat and contract with cold with compensation, in the steel construction piece and steel fastening surface contacted with aluminium alloy folder using zinc-plated or plating zinc-nickel preservative treatment, 8-12 μm of thickness of coating reduces the bimetallic corrosion degree to aluminium alloy.
Description
Technical field
The present invention relates to a kind of dry-type transformer aluminium alloy folder, specifically a kind of weight is not more than 3 tons and indoor use
F class B insulation formula dry-type transformer aluminium alloy folders.
Background technology
In recent years, since Environmental pollution improvement is more and more tighter, the processing of steel construction folder surface lacquer is to environment
It pollutes, qualified external coordination producer selection is less.Since aluminum alloy surface has layer oxide film to protect aluminum alloy surface.With
Aluminium alloy folder replaces steel construction folder to reduce to air environmental pollution without processing of painting again.Meanwhile transformer aluminium closes
Golden folder also has the advantage that：
One) Heat Transfer for Aluminum is good, is conducive to transformer core heat dissipation.
Two) for aluminium alloy without magnetism, being conducive to transformer core reduces no-load loss.
Three) under -196 DEG C of low-temperature conditions brittleness variation, still flexible will not occur for aluminium alloy, so aluminium alloy is low
Using there is some superiority under warm environment.
Four) aluminium alloy recyclability is good, is conducive to waste utilization, resource-effective.
When using aluminium alloy folder, there is also problems with：
1) cost performance problem：Since aluminum alloy trough aluminium weight unit price is 4~5 times of channel steel, cost is higher.Aluminium alloy resists
Tensile strength ratio Q235 is low, so, aluminium alloy folder should meet intensity requirement, again control cost, and there are one suitable sexual valences
Than convenient for promoting the use of.
2) welding position strength reduction problem：Aluminium alloy folder welding position intensity declines more, about strength of parent
60%.So needing to reduce welded use to the greatest extent, to improve the intensity of aluminium alloy folder.
3) the swollen coefficients comparison of aluminium alloy wire is high.Under the thermal stress effect that temperature raises and reduces, it is easy to make transformer
Clamping force reduces.
4) aluminium alloy folder temperature in use cannot be high, and after 200 DEG C, aluminium alloy will appear softening.
5) aluminium electrode current potential is very negative, when contacting with dissimilar metal, is easy to generate serious galvanic corrosion as anode.Cause
This, need to take measures, and prevent and reduce the harm of bimetallic corrosion.
So aluminium alloy folder replaces steel construction folder, need to solve the above technical problem.
Invention content
The purpose of the present invention be intended to provide it is a kind of it is simple and reasonable, have excellent performance, be easy to use, manufacturing cost is low, easy
Production, easily realization, service life length and safe and reliable dry-type transformer aluminium alloy clamping structure, it is in the prior art to overcome
Shortcoming.
By a kind of dry-type transformer aluminium alloy folder that this purpose designs, including upper clamping piece and lower clamping piece, it is characterised in that：
Upper clamping piece and lower clamping piece are made of 6061-T6 aluminum alloy materials respectively and transformer total weight is not more than 3 tons, when use most
High-temperature is no more than 155 DEG C, and by anodized, anodic oxidation film thickness is 8-10 μ for upper clamping piece and lower clamping piece surface
m；Wherein, 6061-T6 aluminium alloys are made of in terms of mass fraction following chemical composition：The Si of 0.4-0.8,0.7 Fe, 0.15-
The Al of the Cr of Mg, 0.04-0.35 of 0.4 Cu, 0.15 Mu, 0.8-1.2,0.25 Zn, 0.15 Ti, surplus.
The section of the upper clamping piece is that circular arc is excessive in the interior outside corner of groove profile and its slot position, slot position it is inside and outside
Side wall is plane setting；Also split settings have hanging ring and support angle steel on the upper clamping piece.
The upper clamping piece corresponds to hanging ring and is provided with the first plain washer and nut；The hanging ring passes through the first plain washer and spiral shell
Female cooperation split settings are on upper clamping piece.
The upper clamping piece corresponds to support angle steel and is provided with bolt, the second plain washer and nut；The support angle steel passes through
The cooperation split settings of bolt, the second plain washer and nut are on upper clamping piece.
It is additionally provided with elastic washer between the upper clamping piece and support angle steel, passes through elasticity between upper clamping piece and support angle steel
Washer elastic connection.
The upper clamping piece connects with hanging ring, support angle steel, the first plain washer, nut, bolt, the second plain washer, nut installation
Tactile surface also passes through zinc-plated or plating zinc-nickel preservative treatment, 8-12 μm of thickness of coating.
The section of the lower clamping piece is in groove profile, and the interior outside corner of its slot position is that circular arc is excessive, slot position it is inside and outside
Side wall is plane setting；Also split settings have cushion block channel bar on the lower clamping piece.
The lower clamping piece corresponds to cushion block channel bar and is provided with locating pin and positioning pin；The cushion block channel bar passes through positioning
Nail and positioning pin split settings are on lower clamping piece.
The surface that the lower clamping piece is contacted with the installation of cushion block channel bar, locating pin and positioning pin also passes through zinc-plated or plating zinc-nickel
Preservative treatment, 8-12 μm of thickness of coating.
The present invention by the improvement of above structure, using 6061-T6 aluminium alloys makes weight no more than 3 tons and indoor makes
Dry-type transformer aluminium alloy folder, to substitute now commonly used steel construction folder, wherein 6061-T6 aluminum alloy surfaces
Anodized, anodic oxidation film thickness be 8-10 μm, anode oxide film be used as protective layer, can greatly improve upper clamping piece with
The corrosion resisting property on lower clamping piece surface, prolongs the service life；Upper clamping piece and lower clamping piece intensity are calculated using finite element modeling simultaneously, it is right
Lifting, handling, transport and the overturning operating mode of upper clamping piece and lower clamping piece dry-type transformer are calculated, and upper clamping piece and lower clamping piece are optimized
Cross sectional shape, reach reduce upper clamping piece and lower clamping piece cost；Since intensity decline in aluminium alloy folder welding position is more, about
It is the 60% of strength of parent, therefore the use by reducing upper clamping piece and lower clamping piece welding, to improve upper clamping piece and lower clamping piece
Intensity；And increase elastic washer in iron core clamping, coil compression, steel structure bolt connecting portion, it is expanded with heat and contract with cold with compensation
Caused by clamping force reduce phenomenon, steel construction piece contact with aluminium alloy folder at other and steel fastening surface use it is zinc-plated or
Zinc-nickel preservative treatment is plated, the bimetallic corrosion degree to aluminium alloy can be greatly reduced in 8-12 μm of thickness of coating.
In terms of comprehensive, with it is simple and reasonable, have excellent performance, easy to use, manufacturing cost is low, easy to produce, Yi Shi
Now, the features such as service life is long and safe and reliable, it is highly practical.
Description of the drawings
Fig. 1 is the upper clamping piece positive structure schematic of first embodiment of the invention.
Fig. 2 is the lower clamping piece positive structure schematic of first embodiment of the invention.
Fig. 3 is to split structural schematic diagram along line A-A in Fig. 1.
Fig. 4 is to split structural schematic diagram along line B-B in Fig. 1.
Fig. 5 is the lower clamping piece side structure schematic diagram of first embodiment of the invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1-Fig. 5, this dry-type transformer aluminium alloy folder, including upper clamping piece 1 and lower clamping piece 1 ', upper clamping piece 1 is under
Folder 1 ' is made of 6061-T6 aluminum alloy materials respectively and transformer total weight is not more than 3 tons, and maximum temperature when use is not
More than 155 DEG C, upper clamping piece 1 and 1 ' surface of lower clamping piece are by anodized, and anodic oxidation film thickness is 8-10 μm, anode
Oxidation film can greatly improve the corrosion resisting property on aluminium alloy folder surface, prolong the service life as protective layer.
6061-T6 aluminium alloys are made of in terms of mass fraction following chemical composition：The Si of 0.4-0.8,0.7 Fe,
The Al of the Cr of Mg, 0.04-0.35 of the Cu of 0.15-0.4,0.15 Mu, 0.8-1.2,0.25 Zn, 0.15 Ti, surplus.
The mechanical performance of 6061-T6 aluminium alloys is as follows：Tensile strength is not less than not less than 260MPa, yield strength
240MPa, elongation after fracture are not less than 10%.
Further speaking, the section of upper clamping piece 1 is that circular arc is excessive in the interior outside corner of groove profile and its slot position, slot
The outboard sidewalls of position are plane setting；Also split settings have hanging ring 2 and support angle steel 3 on the upper clamping piece 1.
Further speaking, upper clamping piece 1 corresponds to hanging ring 2 and is provided with the first plain washer 4 and nut 5；The hanging ring 2 passes through
The cooperation split settings of one plain washer 4 and nut 5 are on upper clamping piece 1.
Further speaking, upper clamping piece 1 corresponds to support angle steel 3 and is provided with bolt 6, the second plain washer 7 and nut 9；Described
Support angle steel 3 is by the cooperation split settings of bolt 6, the second plain washer 7 and nut 9 on upper clamping piece 1.
The linear expansion coefficient of aluminium alloy is relatively high, under the thermal stress effect that temperature raises and reduces, is easy to make transformer
Clamping force reduces.In order to solve this problem, increase elastic washer in iron core clamping, coil compression, steel structure bolt connecting portion
8, clamping force reduces problem caused by being expanded with heat and contract with cold with compensation.
In particular, be additionally provided with elastic washer 8 between upper clamping piece 1 and support angle steel 3, upper clamping piece 1 and support angle steel 3 it
Between pass through 8 elastic connection of elastic washer.
Further speaking, the section of lower clamping piece 1 ' is in groove profile, and the interior outside corner of its slot position is that circular arc is excessive,
The outboard sidewalls of slot position are plane setting；Also split settings have cushion block channel bar 2 ' on the lower clamping piece 1 '.
Further speaking, lower clamping piece 1 ' corresponds to cushion block channel bar 2 ' and is provided with locating pin 3 ' and positioning pin 4 '；The pad
Block channel bar 2 ' is by locating pin 3 ' and 4 ' split settings of positioning pin on lower clamping piece 1 '.
Hanging ring 2 and support angle steel 3 are changed to be threadedly coupled by being welded to connect for the prior art, while by cushion block channel bar 2 '
It is changed to pin by being welded to connect for the prior art and is located by connecting, the use welded by reducing upper clamping piece 1 and lower clamping piece 1 ', to
Improve the intensity of upper clamping piece 1 and lower clamping piece 1 '.
It is as follows to improve aluminium alloy cost performance technical measures：Since the slot aluminium weight unit price of upper clamping piece 1 and lower clamping piece 1 ' is slot
4-5 times of steel, cost is higher, and in order to reduce cost, the intensity of upper clamping piece 1 and lower clamping piece 1 ' is calculated using finite element modeling, right
Lifting, handling, transport and the overturning operating mode of aluminium alloy clamp dry type transformer are calculated, and the section shape of aluminium alloy folder is optimized
Shape reaches the cost for reducing upper clamping piece 1 and lower clamping piece 1 '.
Below table is the aluminium alloy folder stress situation of FEM calculation：.
As can be known from the above table, under 3 tons of weight, dry-type transformer aluminium alloy folder is implementing lifting, handling, transport and iron core
It overturns operating mode and carries out strength Calculation result.From upper table as it can be seen that the maximum stress of upper clamping piece 1 and lower clamping piece 1 ' is in transport
161.19MPa is less than aluminium alloy yield strength 240MPa.
Below table is that channel steel and slot aluminum material and processing cost compare calculated case：
As can be known from the above table, upper clamping piece 1 made of aluminium alloy and 1 ' cost of lower clamping piece and steel construction folder cost remain basically stable.
Upper clamping piece 1 made of aluminium alloy and 1 ' temperature in use of lower clamping piece cannot be high, and after 200 DEG C, aluminium alloy will appear
Softening.Therefore, on F class B insulation grade dry-type transformers, F class B insulation maximum temperatures are no more than for upper clamping piece 1 and lower clamping piece 1 '
155 DEG C, it is ensured that upper clamping piece 1 and lower clamping piece 1 ' are not in softening.
Upper clamping piece 1 made of aluminium alloy and 1 ' aluminium electrode current potential of lower clamping piece are very negative, when being contacted with dissimilar metal, are easy conduct
Anode generates serious galvanic corrosion.Therefore, in order to prevent with the harm that reduces bimetallic corrosion, other with upper clamping piece 1 and
The steel construction piece and steel fastening surface that lower clamping piece 1 ' contacts use zinc-plated or plating zinc-nickel preservative treatment.
In particular, upper clamping piece 1 and hanging ring 2, support angle steel 3, the first plain washer 4, nut 5, bolt 6, the second plain washer
7, the surface of the installation of nut 9 contact also passes through zinc-plated or plating zinc-nickel preservative treatment, 8-12 μm of thickness of coating.
The surface that lower clamping piece 1 ' is contacted with the installation of cushion block channel bar 2 ', locating pin 3 ' and positioning pin 4 ' also passes through zinc-plated or plating
Zinc-nickel preservative treatment, 8-12 μm of thickness of coating.
By above-mentioned zinc-plated or plating zinc-nickel preservative treatment, upper clamping piece 1 and lower clamping piece 1 ' made of aluminium alloy can be greatly reduced
Bimetallic corrosion degree.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of this field
Personnel should be recognized that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this hairs
Bright principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variations
It all fall within the protetion scope of the claimed invention with improvement.The claimed scope of the invention is by appended claims and its waits
Jljl is defined.
Claims (9)
1. a kind of dry-type transformer aluminium alloy folder, including upper clamping piece (1) and lower clamping piece (1 '), it is characterised in that：Upper clamping piece (1)
It is made respectively of 6061-T6 aluminum alloy materials with lower clamping piece (1 ') and transformer total weight is not more than 3 tons, highest when use
Temperature is no more than 155 DEG C, and by anodized, anodic oxidation film thickness is for upper clamping piece (1) and lower clamping piece (1 ') surface
8-10μm；Wherein, 6061-T6 aluminium alloys are made of in terms of mass fraction following chemical composition：The Si of 0.4-0.8,0.7 Fe,
The Al of the Cr of Mg, 0.04-0.35 of the Cu of 0.15-0.4,0.15 Mu, 0.8-1.2,0.25 Zn, 0.15 Ti, surplus.
2. dry-type transformer aluminium alloy folder according to claim 1, it is characterised in that：The section of the upper clamping piece (1)
Interior outside corner in groove profile and its slot position is that circular arc is excessive, and the outboard sidewalls of slot position are plane setting；Described is upper
Also split settings have hanging ring (2) and support angle steel (3) on folder (1).
3. dry-type transformer aluminium alloy folder according to claim 2, it is characterised in that：Upper clamping piece (1) correspondence is hung
Ring (2) is provided with the first plain washer (4) and nut (5)；The hanging ring (2) is matched by the first plain washer (4) and nut (5)
Split settings are closed on upper clamping piece (1).
4. dry-type transformer aluminium alloy folder according to claim 3, it is characterised in that：The corresponding branch of the upper clamping piece (1)
Support angle steel (3) is provided with bolt (6), the second plain washer (7) and nut (9)；The support angle steel (3) passes through nut (9),
The cooperation split settings of two plain washers (7) and bolt (6) are on upper clamping piece (1).
5. dry-type transformer aluminium alloy folder according to claim 4, it is characterised in that：The upper clamping piece (1) and support
It is additionally provided with elastic washer (8) between angle steel (3), passes through elastic washer (8) elasticity between upper clamping piece (1) and support angle steel (3)
Connection.
6. dry-type transformer aluminium alloy folder according to claim 5, it is characterised in that：The upper clamping piece (1) and hanging ring
(2), support angle steel (3), the first plain washer (4), nut (5), bolt (6), the second plain washer (7), nut (9) installation contact
Surface also passes through zinc-plated or plating zinc-nickel preservative treatment, 8-12 μm of thickness of coating.
7. dry-type transformer aluminium alloy folder according to claim 1, it is characterised in that：The section of the lower clamping piece (1 ')
In groove profile, and the interior outside corner of its slot position is that circular arc is excessive, and the outboard sidewalls of slot position are plane setting；Described
Also split settings have cushion block channel bar (2 ') on lower clamping piece (1 ').
8. dry-type transformer aluminium alloy folder according to claim 7, it is characterised in that：The corresponding pad of the lower clamping piece (1 ')
Block channel bar (2 ') is provided with locating pin (3 ') and positioning pin (4 ')；The cushion block channel bar (2 ') by locating pin (3 ') and
Positioning pin (4 ') split settings are on lower clamping piece (1 ').
9. dry-type transformer aluminium alloy folder according to claim 8, it is characterised in that：The lower clamping piece (1 ') and cushion block
Channel bar (2 '), locating pin (3 ') and positioning pin (4 ') installation contact surface also by it is zinc-plated or plating zinc-nickel preservative treatment,
8-12 μm of thickness of coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556499.2A CN108777221A (en) | 2018-06-01 | 2018-06-01 | A kind of dry-type transformer aluminium alloy folder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556499.2A CN108777221A (en) | 2018-06-01 | 2018-06-01 | A kind of dry-type transformer aluminium alloy folder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108777221A true CN108777221A (en) | 2018-11-09 |
Family
ID=64028252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810556499.2A Pending CN108777221A (en) | 2018-06-01 | 2018-06-01 | A kind of dry-type transformer aluminium alloy folder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108777221A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112122Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Fixing device for rectifier transformer manufacturing technology |
| CN101930834A (en) * | 2009-06-26 | 2010-12-29 | 苏州工业园区隆盛电器成套设备制造有限公司 | Coil compressing device for dry type transformer |
| CN105374527A (en) * | 2014-08-26 | 2016-03-02 | 镇江船舶电器有限责任公司 | Marine light-weight transformer |
| CN207010230U (en) * | 2017-05-19 | 2018-02-13 | 许继变压器有限公司 | an arc suppressing coil |
| CN208690075U (en) * | 2018-06-01 | 2019-04-02 | 顺特电气设备有限公司 | A kind of dry-type transformer aluminium alloy folder |
-
2018
- 2018-06-01 CN CN201810556499.2A patent/CN108777221A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201112122Y (en) * | 2007-09-11 | 2008-09-10 | 中电电气集团有限公司 | Fixing device for rectifier transformer manufacturing technology |
| CN101930834A (en) * | 2009-06-26 | 2010-12-29 | 苏州工业园区隆盛电器成套设备制造有限公司 | Coil compressing device for dry type transformer |
| CN105374527A (en) * | 2014-08-26 | 2016-03-02 | 镇江船舶电器有限责任公司 | Marine light-weight transformer |
| CN207010230U (en) * | 2017-05-19 | 2018-02-13 | 许继变压器有限公司 | an arc suppressing coil |
| CN208690075U (en) * | 2018-06-01 | 2019-04-02 | 顺特电气设备有限公司 | A kind of dry-type transformer aluminium alloy folder |
Non-Patent Citations (3)
| Title |
|---|
| 刘永辉，张佩芬编: "《金属腐蚀学原理》", 31 December 1993, 北京：航空工业出版社, pages: 224 - 226 * |
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