CN106328359B - A kind of first winding skeleton and its production method and voltage transformer production method - Google Patents
A kind of first winding skeleton and its production method and voltage transformer production method Download PDFInfo
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- CN106328359B CN106328359B CN201610795683.3A CN201610795683A CN106328359B CN 106328359 B CN106328359 B CN 106328359B CN 201610795683 A CN201610795683 A CN 201610795683A CN 106328359 B CN106328359 B CN 106328359B
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- 238000004804 winding Methods 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 72
- 239000011521 glass Substances 0.000 claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 10
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 241000628997 Flos Species 0.000 abstract description 20
- 230000005684 electric field Effects 0.000 abstract description 9
- 239000004020 conductor Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 238000009413 insulation Methods 0.000 description 14
- 239000003822 epoxy resin Substances 0.000 description 8
- 229920000647 polyepoxide Polymers 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010125 resin casting Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000037303 wrinkles Effects 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
- H01F27/28—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
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
- Insulating Of Coils (AREA)
Abstract
Voltage transformer first winding skeleton provided by the invention, comprising: copper alloy tube, the tube wall of the copper alloy tube are equipped with gap along its length, and the copper alloy tube plays conductive effect, and high-voltage line is connected on the copper alloy tube；Expoxy glass silk floss is coated on the inner and outer wall of the copper alloy tube, to prevent the copper alloy tube from deforming；Further include: semiconductor carbon dust, it is evenly mixed in inside the expoxy glass silk floss, since semiconducting electrical conductivity can be poor, collect discharge signal, in conductive surface plus the shielded layer of one layer of semiconductive material, it is contacted with shielded conductor equipotential and well with insulating layer, to avoid that shelf depreciation occurs between conductor and insulating layer, plays the role of shielding electric field.
Description
Technical field
The present invention relates to voltage transformer technical fields, and in particular to a kind of first winding skeleton and its production method and electricity
Press mutual inductor production method.
Background technique
" shelf depreciation " refers under electric field action, only has partial region that electric discharge occurs and is not formed in insulation system
A kind of electric discharge of penetrability discharge channel.When the main reason for generating shelf depreciation is that dielectric is uneven, each region of insulator
The electric field strength of receiving is uneven, reaches disruptive field intensity in some regions electric field strength and discharges, and other regions are still
Keep the characteristic of insulation.Make to contain air gap in insulation system due to improving not to the utmost in design or manufacturing process, or is transported for a long time
Humidified insulation during row, moisture is decomposed under electric field action to be generated gas and forms bubble.Because the dielectric of air is normal
Number it is smaller than the dielectric constant of insulating materials, even if insulating materials under less high electric field action, the field strength at air gap bubble position
Also can be very high, shelf depreciation will occur after field strength reaches certain value.
Shelf depreciation plays a kind of corrosion function to insulation system, and charged particle impact insulation destroys its molecular structure, such as
Fiber fragmentation, thus insulation is damaged, and the insulation is made local temperature raising occur, to easily cause the overheat of insulation, seriously
When just will appear carbonization.The sustainable development of shelf depreciation can be such that the deterioration damage of insulation gradually expands, and finally make positive Changshou of insulating
Life shortens, dielectric strength reduces in short-term, in some instances it may even be possible to make entire insulation breakdown.Therefore it needs to close closely in the actual production process
Infuse partial discharge phenomenon.
Voltage transformer is commonly used in power network line, the equipment as voltage measurement and protection.Existing mutual induction of voltage
Device is generally made of primary coil, secondary coil, iron core and insulation, and first and second coil is coupled by iron core, primary coil and height
Side connection is pressed, secondary coil is connect with measuring instrumentss or relay protection device, is realized by iron core coupling and is converted into high pressure
The low pressure that can be convenient for measuring or the low pressure for driving relay protection device.
In the prior art, the iron core of voltage transformer is wound using cold-reduced silicon sheet, and often there are many points on iron core surface
Burr is held, these tip burrs can generate point discharge when use, cause equipment that shelf depreciation occurs.
To solve the above-mentioned problems, documents CN201549358U discloses a kind of voltage transformer, by iron core
Beginning electrostatic sheild and end electrostatic sheild, and one layer of the half lap semiconductive crimped paper as shielded layer on the outside of iron core is arranged in both ends,
Effectively by the dielectric shielding of the easy electric discharges such as the tip burr of iron core except electric field, voltage transformer production is significantly reduced
The partial discharge quantity of product.
But since iron core is longer, when semiconductive crimped paper is wrapped on skeleton, it is be easy to cause loosening, makes half
Conductive crimped paper can not be fitted tightly on skeleton, generate corner angle.It meanwhile in the prior art, is to be fixed on skeleton both ends certainly
On dynamic winder, by rotation winder, make wire intertwist in frame body, and high-speed rotating skeleton can wrinkle to semiconductive
The very big centrifugal force of line paper, causes the loosening between semiconductive crimped paper and skeleton more serious, so that corner angle are more obvious, most
It is difficult to play the role of shielding shelf depreciation eventually.
Summary of the invention
Therefore, it is partly led the technical problem to be solved in the present invention is that overcoming and being used inside voltage transformer in the prior art
There are corner angle in electric crimped paper protection iron core, semiconductive crimped paper, and voltage transformer is caused to be easy to appear lacking for partial discharge phenomenon
It falls into.
For this purpose, the present invention provides a kind of voltage transformer first winding skeleton, comprising: copper alloy tube, the copper alloy tube
Tube wall be equipped with gap along its length；Expoxy glass silk floss is coated on the inner and outer wall of the copper alloy tube, with to prevent
Only the copper alloy tube deforms；Semiconductor carbon dust is evenly mixed in inside the expoxy glass silk floss；Solder joint, setting exist
On the first winding skeleton outer wall, the copper alloy tube is exposed at the solder joint, to weld high-voltage line.
The length of the first winding skeleton is 100-200mm, and the outer diameter of the copper alloy tube is 80-150mm.
Meanwhile the present invention provides a kind of production method for making first winding skeleton, includes the following steps: the epoxy glass
Glass silk floss and the semiconductor carbon dust are sufficiently mixed uniformly, form mixture A；At the copper alloy plate with specific dimensions
Reason, it is ensured that edge impulse- free robustness and tip；By the mixture A heating and melting, the two sides of the copper alloy plate are coated uniformly on, are obtained
To copper alloy plate B；The copper alloy plate B is put into roller mill, copper alloy plate B is processed into copper alloy tube.
The copper alloy plate B is put into roller mill described, in the step of copper alloy plate B is processed into copper alloy tube,
The roller mill has heat effect.
The production method of first winding skeleton, further includes following steps: the size of obtained copper alloy tube is cut out,
Solder joint is processed on the copper alloy tube.
Meanwhile the present invention provides a kind of method for making voltage transformer, includes the following steps:
(1) is by two end caps of the first winding skeleton on the snap ring of winder；
(2) after enameled wire depainting, one end of enameled wire and the solder joint are welded；
(3) coats insulating paper in the outer surface of the first winding skeleton, then starts the winder；
(4) then it is obtained to be put into step (3) by winding secondary winding on iron core for the iron core for being arranged with secondary winding
First winding skeletal internal, iron core are arranged concentrically with the first winding skeleton；
(5) carries out epoxy resin casting between the first winding skeleton and the iron core.
Technical solution of the present invention has the advantages that
1. voltage transformer first winding skeleton provided by the invention, comprising:
Copper alloy tube, the tube wall of the copper alloy tube are equipped with gap along its length, and the copper alloy tube plays conductive
Effect, high-voltage line are connected on the copper alloy tube；
Expoxy glass silk floss is coated on the inner and outer wall of the copper alloy tube, to prevent the copper alloy tube from sending out
Change shape；Further include:
Semiconductor carbon dust is evenly mixed in inside the expoxy glass silk floss, and since semiconducting electrical conductivity can be poor, collection is put
Electric signal, in conductive surface plus the shielded layer of one layer of semiconductive material, it is with shielded conductor equipotential and good with insulating layer
Good contact is played the role of shielding electric field to avoid that shelf depreciation occurs between conductor and insulating layer.
In the prior art, it is that skeleton both ends are fixed on automatic winding device, by rotating winder, wire intertwist is made to exist
In frame body, and the centrifugal force that high-speed rotating skeleton can be very big to semiconductive crimped paper, lead to semiconductive crimped paper and bone
Loosening between frame is more serious, so that corner angle are more obvious, is finally difficult to play the role of shielding shelf depreciation.
The voltage transformer first winding skeleton provided by the invention, since expoxy glass silk floss is coated on cricoid copper
On the inner and outer wall of compo pipe, since epoxy resin surface is smooth, similar this kind of defect of fin, institute will not be generated
The case where shelf depreciation will not be generated.Simultaneously as epoxy inner miscella semiconductor carbon dust, due to semiconductor conduction
Performance is poor, therefore can star the effect of shielding shelf depreciation.
2. including the following steps: present invention simultaneously provides a kind of production method of first winding skeleton
The expoxy glass silk floss and the semiconductor carbon dust are sufficiently mixed uniformly, form mixture A；
Copper alloy plate with specific dimensions is handled, it is ensured that edge impulse- free robustness and tip；
By the mixture A heating and melting, the two sides of the copper alloy plate are coated uniformly on, obtain copper alloy plate B；
The copper alloy plate B is put into roller mill, copper alloy plate B is processed into copper alloy tube.
First winding skeleton obtained, surfacing, impulse- free robustness and tip can effectively prevent office through the above steps
Portion's electric discharge phenomena generate；Simultaneously because using expoxy glass silk floss as skeleton, therefore there is good intensity.
3. the present invention provides the production method of voltage transformer, include the following steps:
(1) is by two end caps of the first winding skeleton on the snap ring of winder；
(2) after enameled wire depainting, one end of enameled wire and the solder joint are welded；
(3) coats insulating paper in the outer surface of the first winding skeleton, then starts the winder；
(4) then it is obtained to be put into step (3) by winding secondary winding on iron core for the iron core for being arranged with secondary winding
First winding skeletal internal, iron core are arranged concentrically with the first winding skeleton；
(5) carries out epoxy resin casting between the first winding skeleton and the iron core.
The voltage transformer made through the above steps, first winding are coated on cricoid copper using expoxy glass silk floss and close
On the inner and outer wall of golden pipe, since epoxy resin surface is smooth, similar this kind of defect of fin will not be generated, so
The case where shelf depreciation will not be generated.Simultaneously as epoxy inner miscella semiconductor carbon dust, due to semiconducting electrical conductivity
Can be poor, therefore can star the effect of shielding shelf depreciation.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the voltage transformer first winding skeleton provided by the invention.
Description of symbols:
1- copper alloy tube；2- expoxy glass silk flosssilk wadding；3- semiconductor carbon dust；4- solder joint；The gap 5-.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
A kind of voltage transformer first winding skeleton, comprising: copper alloy tube 1, the tube wall of the copper alloy tube 1 is along length side
To equipped with gap 5；Expoxy glass silk floss 2 is coated on the inner and outer wall of the copper alloy tube 1, to prevent the copper from closing
Golden pipe 1 deforms；Semiconductor carbon dust 3 is evenly mixed in inside the expoxy glass silk floss 2；Solder joint 4 is arranged described one
On secondary winding skeleton outer wall, the copper alloy tube 1 is exposed at the solder joint 4, to weld high-voltage line.
Since conducting wire is welded on the copper alloy tube 1, copper alloy tube 1 can play conductive effect.Semiconductor
Carbon dust 3 is evenly mixed in inside the expoxy glass silk floss 2, since semiconducting electrical conductivity can be poor, be collected discharge signal, is being led
Body surface face adds the shielded layer of one layer of semiconductive material, it is contacted with shielded conductor equipotential and well with insulating layer, thus
It avoids that shelf depreciation occurs between conductor and insulating layer, plays the role of shielding electric field.
In the prior art, it is that skeleton both ends are fixed on automatic winding device, by rotating winder, wire intertwist is made to exist
In frame body, and the centrifugal force that high-speed rotating skeleton can be very big to semiconductive crimped paper, lead to semiconductive crimped paper and bone
Loosening between frame is more serious, so that corner angle are more obvious, is finally difficult to play the role of shielding shelf depreciation.
The voltage transformer first winding skeleton provided in this embodiment, since expoxy glass silk floss 2 is coated on ring-type
Copper alloy tube 1 inner and outer wall on, since epoxy resin surface is smooth, will not generate that similar fin is this kind of to be lacked
It falls into, so the case where shelf depreciation will not be generated.Simultaneously as epoxy inner miscella semiconductor carbon dust 3, due to partly leading
Body electric conductivity is poor, therefore can star the effect of shielding shelf depreciation.
Specifically, the length of the first winding skeleton is 100-200mm, and the outer diameter of the copper alloy tube 1 is 80-
150mm.Above-mentioned size is mainly used on the voltage transformer of 35Kv once.
Embodiment 2
The present embodiment provides a kind of production methods for making first winding skeleton, include the following steps:
The expoxy glass silk floss 2 is sufficiently mixed uniformly with the semiconductor carbon dust 3, forms mixture A；
Copper alloy plate with specific dimensions is handled, it is ensured that edge impulse- free robustness and tip；
By the mixture A heating and melting, the two sides of the copper alloy plate are coated uniformly on, obtain copper alloy plate B；
The copper alloy plate B is put into roller mill, copper alloy plate B is processed into copper alloy tube 1.
Specific structure involved in this method is as shown in Figure 1, first winding skeleton obtained, surface are flat through the above steps
Whole, impulse- free robustness and tip can effectively prevent partial discharge phenomenon generation；Make simultaneously because using expoxy glass silk floss 2
For skeleton, therefore there is good intensity.
Meanwhile the copper alloy plate B being put into roller mill described, copper alloy plate B is processed into the step of copper alloy tube 1
In rapid, the roller mill has heat effect.
By the roller mill, expoxy glass silk floss 2 can be heated and be softened, the expoxy glass silk floss 2 after softening has
Good forming ability can deform together with copper alloy plate B.
Further include following steps in the present embodiment: the size of obtained copper alloy tube 1 is cut out, is closed in the copper
Solder joint 4 is processed on golden pipe 1.
Embodiment 3
The present embodiment provides a kind of methods for making voltage transformer, include the following steps:
(1) is by two end caps of the first winding skeleton on the snap ring of winder；
(2) after enameled wire depainting, one end of enameled wire and the solder joint 4 are welded；
(3) coats insulating paper in the outer surface of the first winding skeleton, then starts the winder；
(4) then it is obtained to be put into step (3) by winding secondary winding on iron core for the iron core for being arranged with secondary winding
First winding skeletal internal, iron core are arranged concentrically with the first winding skeleton；
(5) carries out epoxy resin casting between the first winding skeleton and the iron core.
Specific structure involved in this method is as shown in Figure 1, the voltage transformer made through the above steps, first winding
It is coated on using expoxy glass silk floss 2 on the inner and outer wall of cricoid copper alloy tube 1, since epoxy resin surface is smooth flat
It is whole, therefore similar this kind of defect of fin will not be generated, so the case where shelf depreciation will not be generated.Simultaneously as epoxy resin
Internal mix oil semiconductor carbon dust 3 can star the effect of shielding shelf depreciation since semiconducting electrical conductivity can be poor.
Specifically, in the step (3), the first winding skeleton is connected on the snap ring of the winder, works as institute
After stating winder starting, the first winding skeleton will be rotated, since one end of enameled wire has been welded on described one
On secondary winding skeleton, therefore after first winding skeleton is rotated, enameled wire will successively be wound around entire first winding skeleton
On.
After the step (2), winding pmp layer insulation paper, layer insulation paper on the first winding skeleton are needed
Overall thickness be generally between 0.075-0.1mm, to reduce shelf depreciation.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (3)
1. a kind of production method for making first winding skeleton, which is characterized in that the first winding skeleton includes:
The tube wall of copper alloy tube (1), the copper alloy tube (1) is equipped with gap (5) along its length；Expoxy glass silk flosssilk wadding (2), packet
It overlays on the inner and outer wall of the copper alloy tube (1), to prevent the copper alloy tube (1) from deforming；Semiconductor carbon dust
(3), it is internal to be evenly mixed in the expoxy glass silk flosssilk wadding (2)；Solder joint (4) is arranged on the first winding skeleton outer wall, institute
It states and exposes the copper alloy tube (1) at solder joint (4), to weld high-voltage line；
The production method includes the following steps:
Expoxy glass silk flosssilk wadding (2) and semiconductor carbon dust (3) are sufficiently mixed uniformly, form mixture A；
Copper alloy plate with specific dimensions is handled, it is ensured that edge impulse- free robustness and tip；
By the mixture A heating and melting, the two sides of the copper alloy plate are coated uniformly on, obtain copper alloy plate B；
The copper alloy plate B is put into roller mill, copper alloy plate B is processed into copper alloy tube (1).
2. the production method of first winding skeleton according to claim 1, which is characterized in that described by the copper alloy
In the step of plate B is put into roller mill, and copper alloy plate B is processed into copper alloy tube (1), the roller mill has heat effect.
3. the production method of first winding skeleton according to claim 2, which is characterized in that further include following steps:
The size of obtained copper alloy tube (1) is cut out, processes solder joint (4) on the copper alloy tube (1).
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| CN201610795683.3A CN106328359B (en) | 2016-08-31 | 2016-08-31 | A kind of first winding skeleton and its production method and voltage transformer production method |
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| CN201610795683.3A CN106328359B (en) | 2016-08-31 | 2016-08-31 | A kind of first winding skeleton and its production method and voltage transformer production method |
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| CN106328359A CN106328359A (en) | 2017-01-11 |
| CN106328359B true CN106328359B (en) | 2019-07-05 |
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| CN111599580A (en) * | 2020-04-26 | 2020-08-28 | 青岛鼎信通讯股份有限公司 | Medium-voltage high-frequency transformer applied to power electronic transformer |
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Effective date of registration: 20190823 Address after: 325604 Qianzhou Village, Liushi Town, Yueqing City, Zhejiang Province Patentee after: Yueqing Lianying Insulation Material Co., Ltd. Address before: 325604 Qianzhou Village, Liushi Town, Wenzhou City, Zhejiang Province Patentee before: Liu Lianying |