CN115331954A - Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer - Google Patents

Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer Download PDF

Info

Publication number
CN115331954A
CN115331954A CN202211264189.6A CN202211264189A CN115331954A CN 115331954 A CN115331954 A CN 115331954A CN 202211264189 A CN202211264189 A CN 202211264189A CN 115331954 A CN115331954 A CN 115331954A
Authority
CN
China
Prior art keywords
winding
conductive foil
transformer
conductive
strips
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.)
Granted
Application number
CN202211264189.6A
Other languages
Chinese (zh)
Other versions
CN115331954B (en
Inventor
叶彪
张军海
张瑶涵
彭景伟
莫向松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU YIBIAN POWER SOURCE EQUIPMENT CO LTD
Original Assignee
GUANGZHOU YIBIAN POWER SOURCE EQUIPMENT CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUANGZHOU YIBIAN POWER SOURCE EQUIPMENT CO LTD filed Critical GUANGZHOU YIBIAN POWER SOURCE EQUIPMENT CO LTD
Priority to CN202211264189.6A priority Critical patent/CN115331954B/en
Publication of CN115331954A publication Critical patent/CN115331954A/en
Application granted granted Critical
Publication of CN115331954B publication Critical patent/CN115331954B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01F41/06—Coil winding
    • H01F41/061—Winding flat conductive wires or sheets
    • 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
    • H01F27/2847—Sheets; Strips
    • H01F27/2852—Construction of conductive connections, of leads
    • 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
    • H01F41/06—Coil winding
    • H01F41/061—Winding flat conductive wires or sheets
    • H01F41/063—Winding flat conductive wires or sheets with insulation
    • 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
    • H01F41/06—Coil winding
    • H01F41/076—Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The invention provides a winding and outgoing method of a foil coil of a transformer, a winding and an energy-saving and environment-friendly transformer, which relate to the technical field of transformer manufacturing.

Description

Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer
Technical Field
The invention relates to the technical field of transformer manufacturing, in particular to a winding outgoing method of a foil coil of a transformer, a winding and an energy-saving and environment-friendly transformer.
Background
The transformer is basic equipment for power transmission and distribution, and is widely applied to the fields of industry, agriculture, traffic, urban communities and the like. The transformer mainly comprises a high-voltage coil, a low-voltage coil, an iron core, a clamping piece and the like, wherein the coil of the transformer is also called a winding and is a circuit part in the transformer. The foil coil is one kind of transformer coil, has the advantages of easy winding, high mechanical strength, less deformation, capacity of bearing short circuit force, high electric strength and homogeneous impact gradient voltage distribution, and is used mainly in medium and small transformer with capacity below 6300kVA and used as the secondary winding of distribution transformer.
The existing foil type coil generally adopts a high-conductivity copper foil or an aluminum foil as a wound conductive foil plate, insulating paper is lined between the conductive foil plates during winding, a common foil type winding machine is adopted for winding during the whole process, the operation is simple, a head winding part of the conductive foil plate is welded with a conductive bar of a wound lead-out wire when the winding is started, the forward winding direction of the foil plate is the winding direction when seen from the end of the conductive bar of the wound lead-out wire, and a tail winding part of the conductive foil plate is welded to finish the winding of the conductive bar of the wound lead-out wire when the winding is finished.
On one hand, the mode of welding and matching the foil coil and the conducting bar has high requirements on the welding process level of workers, long working time and high labor cost, and argon arc welding gas in a welding operation area influences the health of the workers and easily causes environmental pollution; in addition, the welding position is close to the insulating paper layer during welding, welding slag is not easy to control, the welding slag falls onto the insulating paper layer, so that the insulating layer is easy to burn, but the welding slag is difficult to find by naked eyes of workers, so that transformer accidents are easy to cause, and fire prevention configuration is generally required; when the transformer runs, a large current passes through the low-voltage foil type coil, large vibration can be generated on a coil winding, the conducting bars of the outgoing lines are welded on the head and the tail of the winding, the conducting bars are high in hardness, vibration noise is further propagated and enhanced, environmental noise pollution is generated, in order to reduce the environmental noise pollution, a section of flexible connection is additionally arranged before the external leading-in is connected into a power grid line in the traditional method, the flexible connection is fixedly connected with the head conducting bar and the tail conducting bar through bolts, the low-voltage foil type coil vibrates for a long time, the possibility of poor contact of a connecting part exists, and the operation is inconvenient and the material cost is undoubtedly increased. On the other hand, in order to save the conducting bar material in the manufacturing process of the transformer, the standard rectangular conducting bar is not directly used for welding the starting winding outgoing line and the ending winding outgoing line, but the conducting bar (which is a half material of the traditional standard rectangular conducting bar) is cut in an inclined way as shown in fig. 1, namely, one end of the proper position of the rectangular surface of the traditional standard conducting bar is transversely and horizontally cut in a certain distance h to a transverse cut-off point, then the conducting bar is obliquely cut from the transverse cut-off point to the other end of the rectangular surface along the rectangular surface of the conducting bar, the conducting bar is obliquely cut to the other end of the rectangular surface, so that the transverse distance reserved at the other end of the rectangular conducting bar is also h, and the part outside the transverse distance h is empty, at this time, one standard rectangular conducting bar can generate two conducting bars as shown in fig. 1, when the conductive bar is used for winding a foil coil of each low-voltage winding, the conductive bar is firstly fixed on a winding die, but only one non-beveling side of the conductive bar is leaned on a vertical baffle strip of the winding die, and the other side with the inclination cannot directly depend on the baffle strip.
In addition, after the winding of the transformer coil is completed, the formed windings are divided into three-phase windings A, B and C, star connection is finally adopted for the conductive bars of the outgoing lines after the three-phase windings are finished, and because the distances between different windings and neutral points are different, the three-phase direct current resistance of the outgoing lines is unbalanced, so that the energy loss of the transformer is increased, and the allowable values specified in the current national standards GB/T10228-2015 technical parameters and requirements of dry-type power transformers and GB/T6451-2015 technical parameters and requirements of oil-immersed power transformers, namely the unbalanced rate of the three-phase direct current resistance of the windings: the phase is not more than 4%, the line is not more than 2%, and three-phase direct current resistance imbalance troubles the industry for many years.
In summary, a new foil coil winding and foil coil outgoing method which is simple and easy to operate is provided for a transformer using a foil coil, so that the working efficiency of workers is improved, and a high-quality transformer which is energy-saving and environment-friendly is necessary to be manufactured.
Disclosure of Invention
The transformer aims at solving the problems that when a foil coil is adopted in the prior art, on one hand, the coil winding operation is inconvenient, and the transformer is easy to cause gas pollution and noise pollution when being matched with the traditional conducting bar in a welding way except for high process requirements; on the other hand, the current structure of the conducting bar causes the problems of high material cost of the foil coil and easy unbalance of three-phase direct current resistance caused by the outgoing line of the foil coil.
The invention provides a winding-out method of a foil coil of a transformer, a winding and an energy-saving and environment-friendly transformer, the foil coil is convenient and easy to operate, the process requirement is low, the working efficiency of a manufacturer is improved, the material cost is saved, gas pollution and noise pollution are avoided, the environment is protected, the three-phase direct current resistance of the outgoing line can be accurately balanced, the energy consumption is reduced, and the problem that the three-phase imbalance rate of the direct current resistance exceeds the national standard, which puzzles the industry for many years, is fundamentally solved.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
the application provides a winding and wire-outgoing method of a foil coil of a transformer, which comprises the following steps:
s1, starting from any end of the conductive foil plate, cutting width e and cutting distance are setl 1 Cutting out a plurality of conductive foil strips;
s2, laterally folding each conductive foil strip with one cut end along the same straight line where the cutting end point is located and facing the winding deviceβSequentially stacking the turned conductive foil strips;
s3, setting the axial center line of the winding device to be parallel to the same straight line where the cutting end point is located, taking the stacked conductive foil strips as a starting winding leading-out row for the uncut conductive foil plate, and winding along the circumferential direction of the winding device until the number of turns of a coil is set;
s4, cutting the other end according to the set cutting width e and cutting distancel 1 Cutting a plurality of conductive foil strips, wherein each cut conductive foil strip is turned over along the same straight line of the cutting end point and towards the outer side of the winding applianceβAnd thirdly, the folded conductive foil strips are sequentially stacked, and the stacked conductive foil strips are used as a winding end lead-out row.
Aiming at the winding outgoing line of the foil type coil of the transformer, in the technical scheme, the foil type coil and the winding outgoing line thereof adopt a single structure of a conductive foil plate instead of the welding matching of a traditional conductive copper bar and the foil type coil, when the conductive foil plate is wound, the foil is moderate in softness and hardness, the lead wire can be freely turned over, the electrical safety distance between the lead wire and metal parts such as clamping pieces and the like can be easily controlled, the operation is simple and convenient, the operation is easy, the cutting and turning over can be carried out in a matching way, the working efficiency of manufacturing workers is improved, the working hour cost is reduced, the laminated conductive foil strips formed by turning over are respectively used as a winding outgoing line and a winding ending outgoing line, the inner winding outgoing line and the outer winding ending outgoing line are integrated, an additional conductive line connecting part is not needed in the middle, the lead wire path is small, the material cost is saved, the lead wire loss of the transformer is reduced, the inner winding outgoing line and the outer winding ending outgoing line are provided with a certain soft degree, the vibration of the lead wire is reduced, the vibration of the transformer, and the transformer is reduced, thereby the vibration noise caused by the adoption of the traditional conductive line in the operation during the operation, the operation is avoided, the welding process, the welding burr phenomenon of the environment-friendly operation and the environmental pollution, and the environmental pollution are avoided.
PreferablyDistance of cutting outl 1 Is larger than the width of the conductive foil plate. The width of the conductive foil plate reflects the width of a foil coil formed after the conductive foil plate is wound on a winding device, and the foil coil is also provided with an inner outgoing line and an outer outgoing line which are respectively used for connecting a busbar of a transformer and an external power grid.
Preferably, the conductive foil plate adopts copper foil or aluminum foil, and the number of turns isβThe thickness is 45 degrees, the hardness is moderate, the cutting and the folding are convenient, and the folding degree of 45 degrees can ensure that the folded conductive foil strips are laminated together.
Preferably, the width of the conductive foil plate is selected according to the specification of the winding appliance and the specification requirement of the transformer, and the selected width of the conductive foil plate is set asw 1 The number of the conductive foil strips cut out iskThe width e of each conductive foil strip isw 1 /kEach cut conductive foil strip has a length ofl 1 (ii) a Laminated conductive foil strips from the inside to the outside, the firstiThe length of a winding leading-out row or a winding finishing leading-out row formed by turning over the conductive foil strips outside the conductive foil plate is as follows:
h i =l 1 -i*(w 1 /k)；
wherein the content of the first and second substances,h i is shown asiThe length of the winding lead-out row formed by folding the conductive foil strips outside the conductive foil plate,i=1,2,3，…，kthe laminated conductive foil strips are from inside to outside, followingiThe increase in the number of the first and second,h i gradually decrease; when the temperature is higher than the set temperatureiGet thekWhen the conductive foil strips positioned at the outermost side of the lamination are arranged outside the conductive foil plates, the length of the conductive foil strips is equal tol 1 -w 1 。
Preferably, according to the required lead length, the part of the conductive foil strip, which is folded and laminated outside the conductive foil plate, is cut, so that a winding-up lead-out row or a winding-up end lead-out row formed by all the cut top ends of the conductive foil strips which are flush and the sheet bodies which are laminated is obtained.
After each conductive foil strip is turned over, the lengths of the parts of each conductive foil strip, which are turned over outside the missile foil plate, are different, wherein the conductive foil strip, which is positioned on the innermost side of the stack, has the largest length outside the conductive foil plate, and the winding leading-out row or the winding ending leading-out row, which is formed by stacking and has uneven lengths outside the conductive foil plates, is transversely cut under the guidance of the length requirement of a transformer coil lead for connecting an electrical busbar and grid connection, so that the quality of the winding leading-out row or the winding ending leading-out row formed by stacking the conductive foil strip bodies is ensured, the uniform stress is ensured, and the balance of current density of the transformer coil is ensured during the operation of the transformer.
Preferably, the direct current resistance of the winding-up lead-out row or the winding-up end lead-out row formed by sequentially stacking the turned-over conductive foil strips is determined by the number of the turned-over conductive foil strips, and the number of the cut conductive foil strips is set askThe width of the conductive foil plate isw 1 The thickness of the conductive foil ishThe cross-sectional area of the conductive foil plate isw 1 hEach conductive foil strip has a width ofw 1 /kWhen the number of the folded conductive foil strips is equal tokThe total cross-sectional area of the folded and laminated conductive foil strips is then expressed as: (w 1 /k)*k*h=w 1 hThe total cross-sectional area of the folded and laminated conductive foil strips is the same as the cross-sectional area of the conductive foil plate, namely the current density is the same.
Preferably, when the transformer foil coil is wound, a plurality of conductive foil strips cut from one end of the conductive foil plate are cut off along the same linear direction where the cutting end point is located, and the number of the turned and stacked conductive foil strips is reduced, so that the total number of the turned and stacked conductive foil strips is smaller than that of the turned and stacked conductive foil stripskThe direct current resistance of the leading-out row after winding or the leading-out row after winding is increased; when the number of the folded and laminated conductive foil strips is equal tokWhen in use, a plurality of conductive foil strips are introduced into the laminated conductive foil strips according to actual requirements, and the width and the thickness of the laminated conductive foil strips are increasedThe direct current resistance of the same conductive foil strip is reduced when the lead-out row is wound or when the lead-out row is wound.
The number of the conductive foil strips can be freely increased or decreased according to the requirement of the balance degree, the direct current resistance of the winding leading-out row or the winding ending leading-out row corresponding to the three-phase winding of the transformer can be balanced, and the direct current resistance of a certain phase winding is folded and laminated according to the condition that the direct current resistance of the certain phase winding needs to be decreased according to actual requirementskOn the premise of conducting foil strips, foil strip waste materials in the process of winding a conducting foil plate can be fully utilized, a plurality of conducting foil strips with the same width and thickness as those of stacked conducting foil strips are introduced, direct current resistance of a winding leading-out row or a winding finishing leading-out row is reduced, the problem that the unbalance rate of three-phase direct current resistance of a distribution transformer winding which troubles the industry for many years easily exceeds the allowable value specified by the national standard is solved, and raw materials are saved.
Preferably, in step S3, the uncut conductive foil plate uses the stacked conductive foil strips as a winding lead-out row, when the uncut conductive foil plate is wound along the circumferential direction of the winding device, the hollow elastic airway tube and the solid rigid airway strip are alternately arranged between the winding turns of the conductive foil plate, and after the winding is finished, the solid rigid airway strip is removed from the conductive foil plate between the turns.
The hollow elastic air channel pipe is used as the air channel strip, the wall thickness is small, the conduction effect of the elastic material is good, partial heat covered on the coil heat dissipation surface by the hollow elastic air channel pipe can be conducted to the inner surface and the outer surface of the air channel pipe through the wall of the air channel pipe, the inner surface and the outer surface can be subjected to heat dissipation through air convection, the heat dissipation effect is good, the temperature rise of the coil is low, the resistance and the loss of the coil are reduced accordingly, the hollow elastic air channel pipe operates in a transformer, and when large mechanical vibration is generated inside the coil, the vibration noise of the coil is reduced through the elastic air channel pipe. Considering that the air passage strip is made of elastic materials, when the foil type coil is wound, the mode that the solid rigid air passage strip and the hollow rigid air passage pipe are alternately arranged is adopted, so that the foil type coil is prevented from winding and deforming.
Preferably, the uncut conductive foil plate in the step S3 is wound to a set number of turns of the coil, and a winding-up lead-out row formed by the folded and laminated conductive foil strips is arranged at one end outside the conductive foil plate and connected with an electrical busbar of the transformer; one end of a winding end lead-out row formed by turning and folding the stacked conductive foil strips outside the conductive foil plate is used for grid-connected connection and is directly bent into a flexible connection structure to form integrated flexible connection.
The lead-out row formed by stacking the conductive foil strips is moderate in hardness and can be bent freely, when the lead-out row is used for grid-connected connection, a special soft connection structure does not need to be configured, material energy consumption is saved, looseness of bolt connection under vibration is avoided, integration is achieved, reliability is high, and the lead-out row is suitable for large-capacity transformers or urban indoor use occasions with extremely low requirements on noise and loss of the transformers.
Preferably, the winding leading-out row is replaced by the equal-width conductive row, when the winding leading-out row is replaced by the equal-width conductive row, one end of the conductive foil plate where the winding leading-out row is located is not cut, the equal-width conductive row is connected with the conductive foil plate in a cold-pressing mode to form a winding line, and the other end of the conductive foil plate is cut by the set cutting width e and the cutting distancel 1 And cutting a plurality of conductive foil strips, wherein each cut conductive foil strip is turned over by 45 degrees along the same straight line where the cutting end point is positioned and faces the outer side of the winding appliance, the turned conductive foil strips are sequentially stacked, and the stacked conductive foil strips are used as a leading-out row after winding.
Preferably, the equal-width conducting bar comprises an outgoing line extension section and an embedded bar body, the embedded bar body and the outgoing line extension section are integrally formed, the bottom surface of the embedded bar body is rectangular, the thickness of the embedded bar body is reduced from the joint of the embedded bar body and the outgoing line extension section to the other end of the embedded bar body in sequence, the width of the embedded bar body is unchanged, and the embedded bar body is embedded into a vertical barrier strip of a winding device.
The improved equal-width conducting bar is used for replacing the inner winding leading-out bar, workers can conveniently select different inner and outer leading-out lines to match according to noise and loss requirements, when the inner winding leading-out bar is replaced, the operation is simple and convenient to a certain extent, the working efficiency of manufacturing workers is improved, the working time cost is reduced, no welding process requirement exists, the welding burr phenomenon is avoided, the quality of the transformer is ensured, open fire operation is avoided, fire prevention configuration is not needed, gas pollution and noise pollution are avoided, the transformer is green and environment-friendly, and the transformer is suitable for being used indoors in cities with low requirements on transformer noise and loss.
The application also provides a transformer winding, the winding is formed by the coiling of electrically conductive foil board, what play of winding draw forth the row by electrically conductive foil board one end according to the setting tailor width e and tailor the distancel 1 The plurality of cut conductive foil strips are folded and folded for 45 degrees along the same straight line at the cutting end point and towards the side of the winding device, and the winding end lead-out row of the winding is formed by cutting width e and cutting distance of the other end of the conductive foil plate according to the settingl 1 And the plurality of cut conductive foil strips are folded at an angle of 45 degrees along the same straight line where the cutting end point is positioned and towards the outer side of the winding device and then are laminated to form the conductive foil strip.
The application also provides an energy-saving and environment-friendly transformer, wherein a winding of the transformer adopts a foil coil formed by winding a conductive foil plate, and the winding of the conductive foil plate is wound to be outgoing by utilizing the winding outgoing method of the foil coil of the transformer.
Preferably, the transformer takes a conductive foil strip which is cut at one end of a conductive foil plate and then folded and laminated as a winding lead-out row, and the winding lead-out row is connected with a transformer electrical bus; and cutting the other end of the conductive foil plate to form a folded and stacked conductive foil strip serving as a winding end leading-out row, and directly bending one end of the winding end leading-out row used for grid-connected connection into a flexible connection structure to form integrated flexible connection.
The foil coil and the winding outgoing line of the transformer foil coil are both of a single structure of a conductive foil plate, the foil is moderate in hardness, leads can be folded freely, the electrical safety distance between the foil coil and metal parts such as clamping pieces is easy to control, the foil coil and the winding outgoing line are simple and easy to operate, the foil coil can be cut and folded in an operation matching mode, the working efficiency of manufacturing workers is improved, the working hour cost is reduced, the laminated conductive foil strips formed by folding are respectively used as a winding starting leading-out row and a winding ending leading-out row, the inner winding starting leading-out row and the outer winding ending leading-out row are integrated, an additional conductive row connecting part is not needed in the middle, the lead path is small, the material cost is saved, the lead loss of the transformer is reduced, a certain softness is formed between the inner winding starting leading-out row and the outer winding ending leading-out row, the vibration of the leads can be reduced, the vibration noise of the transformer caused by adopting the traditional conductive row during the operation is greatly reduced, the welding process requirement is avoided, the welding burr phenomenon is avoided, the quality of the transformer is ensured, the open fire operation is not needed, the fire configuration is not needed, the gas pollution and the noise pollution and the environment is protected.
Preferably, the transformer adopts the equal-width conductive bar to replace the winding lead-out bar, when the equal-width conductive bar replaces the winding lead-out bar, one end of the conductive foil plate where the winding lead-out bar is located is not cut, the equal-width conductive bar is connected with the conductive foil plate in a cold-pressing mode to form a winding line, and the other end of the conductive foil plate is cut by the set cutting width e and the cutting distancel 1 Cutting a plurality of conductive foil strips, turning each cut conductive foil strip 45 degrees along the same straight line where the cutting end point is located and facing the outer side of the winding mold, sequentially stacking the turned conductive foil strips, and taking the stacked conductive foil strips as a leading-out row after winding;
the equal-width conducting bar comprises an outgoing line extension section and an embedded bar body, the embedded bar body and the outgoing line extension section are integrally formed, the bottom surface of the embedded bar body is rectangular, the thickness of the embedded bar body is reduced from the joint of the embedded bar body and the outgoing line extension section in sequence to the other end of the embedded bar body, the width of the embedded bar body is unchanged, and the embedded bar body is embedded into a vertical barrier strip of a winding device.
The two sides of the embedding row body of the conducting row in the width direction are straight edges, when the low-voltage foil type coil is wound, the two straight edges of the embedding row body in the width direction are embedded into the vertical barrier strips of the winding device, the conducting row cannot incline during winding, the outer diameter of the coil is easy to control, the weight and the resistance loss of the foil cannot be increased, discharge cannot occur between high-voltage coils and low-voltage coils, and the reliability of the transformer during operation is improved.
Preferably, the transformer is embedded into a vertical barrier strip of a winding device by an embedded bar body of an equal-width conducting bar, the equal-width conducting bar is connected with a foil coil in a cold pressing manner, the equal-width conducting bar is used as a winding leading-out bar, and an outgoing line extension section is connected with an electrical busbar of the transformer;
and cutting the other end of the conductive foil plate to form a folded and stacked conductive foil strip serving as a winding end lead-out row, and directly bending the end of the winding end lead-out row outside the conductive foil plate to form an integrated flexible connection structure.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a winding and outgoing method of a foil coil of a transformer, a winding and an energy-saving and environment-friendly transformer, wherein the foil coil and the winding and outgoing line thereof adopt a single structure of a conductive foil plate, the foil has moderate hardness, can freely turn over a lead wire, is easy to control the electrical safety distance with metal parts such as a clamping piece and the like, is simple and easy to operate, and can be matched with the operation of cutting and turning over, and a laminated conductive foil strip formed by turning over is respectively used as a winding and outgoing line and a winding and outgoing line, so that the working efficiency of manufacturing workers is improved, the working hour cost is reduced, the winding and outgoing line at the inner side and the winding and outgoing line at the outer side are integrated, an additional conductive line connecting part is not needed in the middle, the lead path is small, the material cost is saved, the lead loss of the transformer is reduced, and the winding and outgoing line at the inner side and the winding and outgoing line at the outer side have certain softness, so that the vibration of the lead wire can be reduced, thereby greatly reducing the vibration noise of the traditional conductive line adopted in the operation of the transformer, avoiding the welding phenomenon of burrs, ensuring the quality of the transformer, avoiding gas pollution and the pollution of fire prevention and the configuration, and the environment-friendly transformer.
Drawings
FIG. 1 is a schematic diagram illustrating the formation of a conventional conductive bar as set forth in the background of the invention;
fig. 2 is a schematic flow chart illustrating a method for winding an outgoing line of a foil coil of a transformer according to embodiment 1 of the present invention;
fig. 3 is a front view of a winding tool proposed in embodiment 1 of the present invention;
fig. 4 shows a top view of a winding device proposed in embodiment 1 of the present invention;
fig. 5 is a schematic view showing one end of a conductive foil plate provided in embodiment 1 of the present invention cut out;
fig. 6 is a schematic view showing a folded stack of conductive foil strips formed by cutting a conductive foil plate according to embodiment 1 of the present invention;
fig. 7 is a schematic view illustrating a process of folding the conductive foil strips, cutting the conductive foil strips to have flat top ends, and laminating the conductive foil strips to form lead-out rows according to embodiment 1 of the present invention;
FIG. 8 is a top plan view of the alternate arrangement of the hollow flexible air duct tubes and the solid rigid air duct strips between turns of the coil set forth in example 2 of the present invention;
fig. 9 is a side view of the transformer in which the laminated conductive foil strips as the winding end lead-out row proposed in embodiment 3 of the present invention are directly bent into the flexible connection structure;
fig. 10 is a schematic view showing an unfolded structure of a transformer winding proposed in embodiment 4 of the present invention;
fig. 11 is a schematic diagram showing a structure of a transformer winding proposed in embodiment 4 of the present invention;
FIG. 12 is a schematic view showing a structure of a uniform-width conductive bar proposed in embodiment 5 of the present invention;
fig. 13 is a side view showing the application of the winding end lead-out bar in place of the winding end lead-out bar in embodiment 6 of the present invention to a transformer;
wherein, 1-hollow elastic air duct pipe; 2-solid rigid airway bars; 101-first winding lead-out row; 102-leading out row after the first winding is finished; 201-a second winding lead-out row; 202-leading out row after the second winding is finished; 3-a line-out extension section; 4-embedding row body; 103-a third winding starting lead-out row, 104-a third winding ending lead-out row, M-a traditional conducting row degree; an N-transformer body; q-soft connection structure.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for better illustration of the present embodiment, certain parts of the drawings may be omitted, enlarged or reduced, and do not represent actual dimensions;
it will be understood by those skilled in the art that certain well-known descriptions of the figures may be omitted.
The technical scheme of the invention is further explained by combining the drawings and the embodiment;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1
As shown in fig. 2, in the method provided in this embodiment, for winding and outgoing of a foil coil of a transformer, both the foil coil itself and the winding outgoing thereof are based on one material of a conductive foil plate, instead of using a welding and matching manner between a conventional hard conductive copper bar and the foil coil.
In specific implementation, a winding device is obtained, generally, the winding device is mainly of a cast aluminum die structure, is generally similar to a cylinder, and has high mechanical strength, and the front view and the top view of the winding device can be seen in fig. 3 and 4, when preparing to wind a foil coil, the width of the conductive foil plate is selected according to the specification requirements of the winding device and the transformer, and then the following steps shown in fig. 2 are performed:
s1, starting from any end of the conductive foil plate, cutting width e and cutting distance are setl 1 Cutting a plurality of conductive foil strips;
s2, folding each conductive foil strip with one cut end on one side along the same straight line where the cutting end point is located and on one side facing to the winding deviceβSequentially stacking the turned conductive foil strips;
s3, setting the axial center line of the winding tool to be parallel to the same straight line where the cutting end point is located, taking the overlapped conductive foil strips as a starting winding leading-out row for the uncut conductive foil plate, and winding along the circumferential direction of the winding tool until the conductive foil plate is wound to a set coil turn number;
s4, cutting the other end according to the set cutting width e and cutting distancel 1 Cutting out a plurality of conductive foil strips, wherein each cut-out conductive foil strip is turned over along the same straight line where the cutting end point is positioned and towards the outer side of the winding applianceβThe folded conductive foil strips are sequentially laminatedAnd taking the laminated conductive foil strips as a winding end lead-out row.
In the above steps, for the cutting of the two ends of the conductive foil plate, in practical implementation, a plurality of conductive foil strips are cut horizontally and with equal cutting width in sequence.
In the present embodiment, the clipping distancel 1 The width of the conductive foil plate is larger than that of the conductive foil plate, the conductive foil plate adopts copper foil or aluminum foil with moderate hardness, the cutting and the folding are convenient, and the degree of the folding is convenientβThe angle is 45 degrees, and is optimal when the angle is 45 degrees, the folded conductive foil strips can be ensured to be flatly laminated together, but some folding process angle errors are allowed, and the integral application aesthetic property is not influenced.
The width of the conductive foil plate reflects the width of a foil coil formed after the conductive foil plate is wound on a winding device, and in the embodiment, the cutting and folding operation is matched, so that at least the cutting distance is ensured to be larger than the width of the conductive foil plate, a winding starting leading-out row and a winding ending leading-out row formed by sequentially stacking the folded conductive foil strips are ensured to serve as outgoing lines, and the connection with a transformer busbar and an external power grid can be effectively ensured. Therefore, if the width of the selected conductive foil plate is constant, during cutting, the number of pieces of the conductive foil strips cut at each end, the cutting process and the like can be determined according to the actual transformer specification requirements, and since the cut conductive foil strips are used as a winding lead-out row and a winding end lead-out row to be respectively connected with an electrical busbar and an external grid-connected, the cutting width and the cutting distance can be adjusted according to the actual requirements (such as the transformer capacity and the length of a required lead-out wire), fig. 5 is a schematic diagram of cutting one end of the conductive foil plate, in fig. 5, a horizontal solid line represents a cutting line, a bevel dotted line and a bending arrow in fig. 5 represent the folding angle and the folding direction of the cut guided missile foil strips, and are more intuitive and schematic, and the folding process of the first conductive foil strip and the last conductive foil strip in fig. 5 is used as a display.
As shown in FIG. 5, the width of the conductive foil plate is selected to bew 1 The number of the conductive foil strips cut out iskThen the width e of each conductive foil strip isw 1 /kFor folded conductive foil strips, use can be made ofFig. 6 shows, for example, a conductive foil strip of a lower side, the length of which is equal to the cutting distance, i.e. the cutting distancel 1 And the laminated conductive foil strips are from inside to outside, the firstiThe length of the winding-up leading-out row or the winding-up ending leading-out row formed by folding the conductive foil strips outside the conductive foil plate is as follows:
h i =l 1 -i*(w 1 /k)；
wherein the content of the first and second substances,h i is shown asiThe length of the winding lead-out row formed by folding the conductive foil strips outside the conductive foil plate,i=1,2,3，…，kthe laminated conductive foil strips are from inside to outside, followingiThe increase in the number of the first and second,h i gradually decrease, after each conductive foil strip is turned over, the length of the part of each conductive foil strip turned over outside the missile foil plate is different, wherein the conductive foil strip positioned at the uppermost side of the conductive foil plate has the largest length outside the conductive foil plate, and when the conductive foil strip is turned over, the length of the conductive foil strip positioned at the uppermost side of the conductive foil plate is largeriGetkWhen, wheniGet thekWhen the conductive foil strips positioned at the outermost side of the lamination are arranged outside the conductive foil plates, the length of the conductive foil strips is equal tol 1 -w 1 。
In this embodiment, according to the required lead length, the portion of the conductive foil strip that is folded and laminated outside the conductive foil plate is cut to obtain a winding-up lead-out row or a winding-up lead-out row that is formed by laminating the top ends of all the conductive foil strips and the body of the conductive foil strip, taking a certain conductive foil strip as an example, under the condition that the required lead length is determined, the length of the winding-up lead-out row or the winding-up lead-out row that is formed by folding the conductive foil strip at the lowest side outside the conductive foil plate can be cut according to the required lead length, so in actual implementation, the length of the winding-up lead-out row or the winding-up lead-out row that is formed by folding the conductive foil strip at the lowest side outside the conductive foil plate is the length of the conductive foil platel 1 -w 1 It will meet the required lead length according to the actual needs.
The length of the winding-up leading-out row or the winding-up leading-out row formed by folding the conductive foil strip at the lowest side outside the conductive foil platel 1 -w 1 Taking the starting lead-out row or the ending lead-out row of the rest conductive foil strips as a reference and arranging the starting lead-out row or the ending lead-out row outside the conductive foil plateIs greater thanl 1 -w 1 The specific process is schematically shown in fig. 7, and the finally obtained operation is that the winding starting leading-out row or winding ending leading-out row formed by the leveling of the cutting top ends of all the conductive foil strips and the lamination of the strip bodies is transversely cut, so that the quality of the winding starting leading-out row or winding ending leading-out row formed by the lamination of the conductive foil strip bodies is ensured, the uniform stress is ensured, and the balance of the current density of a transformer coil is ensured when the transformer runs.
In this embodiment, when the transformer operates, the current on the coil flows through the stacked conductive foil leading-out row (the winding-up leading-out row or the winding-up ending leading-out row), the leading-out row itself is a part of the conductive foil plate, the more the number of the stacked missile foil pieces is, the smaller the resistance of the leading-out row is, in the traditional case, the length of the outgoing line connecting electrical bus of the transformer coil is different, in the case that the outgoing line end adopts the star-shaped wiring mode, the three-phase direct current resistance of the outgoing line of the three-phase winding of the transformer is unbalanced, while in the embodiment, the conductive foil pieces are folded and stacked, the direct current resistance of the winding-up leading-out row or the winding-up ending leading-out row formed by sequentially stacking the folded conductive foil pieces is determined by the number of the folded conductive foil pieces, and the number of the cut conductive foil pieces is set askThe width of the conductive foil plate isw 1 The thickness of the conductive foil plate ishThe cross-sectional area of the conductive foil plate isw 1 hEach conductive foil strip has a width ofw 1 /kWhen the number of the folded conductive foil strips is equal tokThe total cross-sectional area of the folded and laminated conductive foil strips is then expressed as: (w 1 /k)*k*h=w 1 hThe total cross-sectional area of the folded and laminated conductive foil strips is the same as the cross-sectional area of the conductive foil plate, namely the current density is the same.
When the foil coil of the transformer is wound, the conductive foil which is cut out of one end of the conductive foil plateA plurality of conductive foil strips in the strips are cut off along the same linear direction of the cutting end point, the number of the turned and stacked conductive foil strips is reduced, and the total number of the turned and stacked conductive foil strips is smaller than that of the turned and stacked conductive foil stripskThe direct current resistance of the leading-out row after winding or the leading-out row after winding is increased; when the number of the folded and laminated conductive foil strips is equal tokAnd then, a plurality of conductive foil strips with the same width and thickness as the stacked conductive foil strips are introduced into the stacked conductive foil strips according to actual requirements, and the direct current resistance of the outgoing line is reduced after the outgoing line is wound or the outgoing line is finished.
Therefore, in this embodiment, according to the requirement of the degree of balance, the number of the conductive foil strips is freely increased or decreased, and the dc resistance of the winding-up lead-out row or the winding-up end lead-out row corresponding to the three-phase winding of the transformer can be balanced, in order to ensure that the unbalanced ratio of the three-phase resistance of the transformer does not exceed the allowable value of the national standard, and on the premise of ensuring the temperature rise of the coil, each phase of coil in the three-phase coil winding of a, B, and C can increase or decrease the resistance value of the lead by decreasing or increasing the number of the conductive foil strips, when the number of the conductive foil strips is greater than that of the conductive foil stripskWhen the number of the conductive foil strips is less than the number of the conductive foil stripskAnd the resistance of the laminated conductive foil strips is increased, so that the problem of unbalanced three-phase direct-current resistance of the distribution transformer winding, which troubles the industry for many years, is solved, and raw materials can be saved.
In conclusion, the transformer solves the problems that when the current transformer adopting the foil coil is manufactured, on one hand, the coil winding operation is inconvenient, the transformer is matched with the traditional conducting bar welding, except that the process requirement is high, the welding position is easy to be subjected to false welding, the winding resistance is increased, and gas pollution and noise pollution are easy to cause; on the other hand, the problem that the material cost of foil coil materials is high due to the structure of the current conducting bar and the electrical defect that the imbalance rate of three-phase direct current resistance is easy to exceed the standard due to the outgoing line of the foil coil is solved.
Example 2
Under the traditional condition, the electrically conductive foil board can adopt solid rigidity air flue strip between the number of turns of electrically conductive foil board coiling when the circumferencial direction coiling along wire winding mould, because the air flue strip is solid, and hardness is the rigidity, then the conduction effect is poor, and the portion of hiding of air flue strip on the cooling surface of coil can't play the radiating effect, and the heat radiating area of the inside air flue of coil is little, and the inside air flue radiating effect of coil is poor, and the temperature rise of coil is higher. And the higher the temperature rise of coil is, the more big resistance of coil is, consequently, the resistance loss of coil also can increase, simultaneously, when transformer operation, great current passes through the coil, and the inside great mechanical vibration power that can form of coil, because air flue strip hardness is the rigidity, does not possess the cushioning effect, and coil itself also can produce great vibration noise.
In view of the above situation, in this embodiment, the uncut conductive foil plate uses all the stacked conductive foil strips as the winding lead-out row, and when the conductive foil plate is wound along the circumferential direction of the winding mold, as shown in fig. 8, the hollow elastic air duct tubes 1 and the solid rigid air duct strips 2 are alternately arranged between the winding turns of the conductive foil plate, the hollow elastic air duct tubes 1 are made of elastic material, such as plastic or rubber, and when the foil coil is wound, the solid rigid air duct strips 2 and the hollow elastic air duct tubes 1 are alternately arranged to prevent the foil coil from being wound and deformed. And after the winding is finished, removing the solid rigid air flue strip 2 from the turn-to-turn part of the conductive foil plate.
In this embodiment, the hollow elastic air duct tube 1 is used as the air duct strip, and the wall thickness is thin, so that the conduction effect of the elastic material is good, part of heat covered by the hollow elastic air duct tube 1 on the coil heat dissipation surface can be conducted to the inner surface and the outer surface of the air duct tube through the wall of the air duct tube, and the inner surface and the outer surface can be subjected to heat dissipation through air convection, so that the heat dissipation effect is good, the temperature rise of the coil is low, and the resistance and the loss of the coil are reduced accordingly. And when the hollow elastic air channel pipe runs in the transformer and generates larger mechanical vibration in the coil, the vibration noise of the coil is reduced by damping through the elastic air channel pipe.
Example 3
Winding an uncut conductive foil plate to a set coil turn number, connecting a winding-up lead-out row formed by turning and laminating conductive foil strips to one end outside the conductive foil plate, and taking the winding-up lead-out row as a first winding-up lead-out row which is indicated by a mark 101; one end of a winding end lead-out row formed by turning and laminating the conductive foil strips is used for grid-connected connection outside the conductive foil plate, and is directly bent into a flexible connection structure to form an integrated flexible connection, and the winding end lead-out row is used as a first winding end lead-out row and is indicated by a mark 102.
Fig. 9 shows a side view of a transformer in which a laminated conductive foil strip is directly bent to form a flexible connection structure, and N shows a transformer body, the application is to use a winding outgoing line of a foil type coil and the coil body as an integral structure, the middle part has no connection part, the lead path is small, the material cost is saved, and the loss of the transformer is reduced, the flexible connection structure in fig. 9 is represented by a mark Q, the foil has moderate flexibility and can be freely bent, when the flexible connection structure is used, the vibration of the lead can be reduced, and the vibration noise of the transformer is greatly reduced, a bus bar in an external power grid bus duct can be directly connected to the flexible connection structure, namely the flexible connection structure and the winding ending outgoing line are integrally realized, the reliability is high, the specially configured flexible connection is avoided, and the transformer is suitable for large-capacity transformers or urban use occasions with extremely low requirements on noise and loss of the transformers.
Example 4
The embodiment provides a transformer winding, the structural development of the winding is shown in figure 10, the winding is formed by winding a conductive foil plate, a winding device is arranged in the winding, the front view and the top view of the winding device are respectively shown in figures 3 and 4, the winding device is not shown in figure 10, the structural schematic diagram of the finally formed transformer winding is shown in figure 11, the winding leading-out row of the winding provided by the embodiment is cut by a set cutting width e and a set cutting distance from one end of the conductive foil platel 1 A plurality of cut conductive foil strips are folded for 45 degrees along the same straight line of the cutting end point and towards the side of the winding device and then are laminated, the starting winding leading-out row is used as a second starting winding leading-out row which is indicated by a mark 201, and the winding finishing leading-out row of the winding is formed by the other end of the conductive foil plate according to the set cutting width e and the cutting distancel 1 The plurality of cut conductive foil strips are folded at 45 degrees along the same straight line where the cutting end point is located and face the outer side of the winding device and then are stacked, and the winding end lead-out row is used as a second winding end lead-out row and is indicated by a mark 202.
Example 5
The embodiment provides an energy-saving and environment-friendly transformer, which comprises an iron core, a three-phase winding and other components, and is not described herein any more, the winding of the transformer provided by the embodiment adopts a foil coil formed by winding a conductive foil plate, and the coil is wound by using the method for winding the coil out of the transformer foil coil during the winding of the conductive foil plate.
In specific implementation, the transformer takes a conductive foil strip which is cut at one end of a conductive foil plate and then folded and laminated as a winding lead-out row, and the winding lead-out row is connected with an electrical bus of the transformer; the other end of the conductive foil plate is cut into the folded and stacked conductive foil strips to serve as a winding end leading-out row, one end, used for grid-connected connection, of the winding end leading-out row is directly bent into a flexible connection structure to form integrated flexible connection, and the structure of the transformer can be seen in fig. 9. In the winding outgoing line of the foil coil of the transformer, the foil coil and the winding outgoing line thereof adopt a single structure of a conductive foil plate, the foil is moderate in hardness, the lead wire can be freely folded, the electrical safety distance between the lead wire and metal pieces such as clamping pieces is easy to control, the operation is simple and convenient, the operation is easy to operate, the cutting and folding operation can be matched, the working efficiency of manufacturing workers is improved, and the working hour cost is reduced.
The stacked conductive foil strips formed by folding are respectively used as a winding leading-out row and a winding ending leading-out row, the winding leading-out row on the inner side and the winding ending leading-out row on the outer side are integrated, an additional conductive row connecting part is not needed in the middle, the lead path is small, the material cost is saved, the lead loss of the transformer is reduced, the winding leading-out row on the inner side and the winding ending leading-out row on the outer side have certain softness, and the vibration of the lead can be reduced, so that the vibration noise of the traditional conductive row adopted in the transformer operation process is greatly reduced, the welding process requirement is avoided, the welding burr phenomenon is avoided, the quality of the transformer is ensured, open fire operation is avoided, fire prevention configuration is not needed, gas pollution and noise pollution are avoided, and the environment is protected.
Conventionally, for the winding device shown in fig. 3 and 4, the conducting bar embedding strip is generally arranged in the direction from top to bottom of the winding device (see the right side gap shown in fig. 4)The transformer provided by the embodiment adopts the equal-width conductive bar as shown in figure 12 to replace the traditional winding leading-out bar, when the equal-width conductive bar replaces the winding leading-out bar, one end of the conductive foil plate where the winding leading-out bar is arranged is not cut, namely, the foil coil is directly wound by the end in a traditional mode, and when the winding is started, the equal-width conductive bar provided by the embodiment is utilized to cold press and connect the conductive foil plate at the end to form the winding leading-out line, and the other end of the conductive foil plate is cut to a width e and a cutting distance according to the settingl 1 And cutting a plurality of conductive foil strips, wherein each cut conductive foil strip is turned over for 45 degrees along the same straight line where the cutting end point is positioned and towards the outer side of the winding die, the turned conductive foil strips are sequentially stacked, and the stacked conductive foil strips are used as a leading-out row after winding.
As shown in fig. 12, the constant-width conducting bar proposed in this embodiment is similar to the conventional conducting bar as a whole, and also includes a wire-outgoing extension section 3 and an embedded bar body 4, the embedded bar body 4 and the wire-outgoing extension section 3 are integrally formed, but the bottom surface of the embedded bar body 4 proposed in this embodiment is rectangular, compared with the conventional material-saving conducting bar shown in fig. 1, the thickness of the embedded bar body 4 starts from the connection position of the embedded bar body 4 and the wire-outgoing extension section 3, and decreases sequentially towards the other end of the embedded bar body 4, the width of the embedded bar body 4 is unchanged, the embedded bar body 4 is embedded into the vertical barrier of the winding tool, that is, the constant-width conducting bar is also rectangular in shape characterized in width, but it is not cut in width direction and has no bevel edge, but starts from the connection position of the embedded bar body 4 and the wire-outgoing extension section 3 along the thickness direction, the two straight sides of the embedding row body 4 of the conducting row in the width direction are straight sides, when the low-voltage foil coil is wound, the two straight sides of the embedding row body 4 in the width direction are both embedded into the vertical barrier strips of the winding device, the constant-width conducting row can not incline when being wound, when the foil coil is wound, the outer diameter of the coil is easy to control, the weight and the resistance loss of the foil can not be increased, discharge can not be generated between high-voltage and low-voltage coils, the reliability of the transformer during operation is improved, the phenomenon that the traditional conducting row only has a non-oblique side with vertical inclination and leans against the vertical barrier strips of a winding die, the other side with inclination can not directly depend on the barrier strips to easily slide and incline the conducting row when being wound, the accuracy of the coil size is influenced, the outer diameter of the coil is prevented from being easily increased, the quality of the wound coil is increased and the loss is increased, the material cost is high, the insulation distance between the outer diameter of the low-voltage coil and the inner diameter of the high-voltage coil is reduced, and the problem that the operation life of the transformer is influenced due to transformer faults caused by discharging easily caused by insufficient insulation distance between the high-voltage coil and the low-voltage coil is solved.
Example 6
With reference to the equal-width conducting bar provided in embodiment 5, the energy-saving and environment-friendly transformer provided in this embodiment replaces the winding lead-out bar with the equal-width conducting bar, when the winding lead-out bar is replaced with the equal-width conducting bar, one end of the conducting foil plate where the winding lead-out bar is located is not cut, the equal-width conducting bar is connected with the conducting foil plate in a cold-pressing manner to form the winding lead-out line, and the other end of the conducting foil plate is cut at the same cutting distancel 1 Sequentially and horizontally cutting a plurality of conductive foil strips with equal cutting width e, turning each cut conductive foil strip 45 degrees along the same straight line where the cutting end point is located and facing the outer side of the winding device, sequentially stacking the turned conductive foil strips, and taking the stacked conductive foil strips as a leading-out row after winding;
the equal-width conducting bar comprises an outgoing line extension section 3 and an embedded bar body 4, the embedded bar body 3 and the outgoing line extension section 4 are integrally formed, the bottom surface of the embedded bar body 4 is rectangular, the thickness of the embedded bar body 4 is reduced from the joint of the embedded bar body 4 and the outgoing line extension section 3 in sequence towards the other end of the embedded bar body 4, the width of the embedded bar body 4 is unchanged, and the embedded bar body 4 is embedded into a vertical barrier strip of a winding device.
Both sides of the embedding row body 4 of the equal-width conducting row in the width direction are straight sides, when the low-voltage foil coil is wound, the two straight sides of the embedding row body 4 in the width direction are embedded into the vertical barrier strips of the winding device, the equal-width conducting row cannot incline when being wound, when the foil coil is wound, the outer diameter of the coil is easy to control, the weight and the resistance loss of a foil cannot be increased, discharge cannot occur between high-voltage coils and low-voltage coils, and the reliability of a transformer during operation is improved.
For the condition that a laminated conductive foil strip formed by matching the cutting and folding operations of a foil coil of the transformer is used as a winding end leading-out row, the improved equal-width conductive row is provided to replace the winding end leading-out row on the outer side, the application diagram is shown in figure 13, the winding end leading-out row on the outer side is replaced, the operation is simple and convenient to a certain extent, the working efficiency of manufacturing workers is improved, the working time cost is reduced, the cold pressing connection is directly realized, the welding process requirement is avoided, the welding burr phenomenon is avoided, the quality of the transformer is ensured, the open fire operation is avoided, the fireproof configuration is not needed, the gas pollution and the noise pollution are avoided, the environment-friendly effect is realized, and the transformer foil coil is suitable for being used indoors in cities with lower requirements on noise and loss of the transformer.
Referring to fig. 13, in the transformer, the embedding bar body 4 of the equal-width conducting bar is embedded into the conducting bar embedding strip (see the right-side notch shown in fig. 4), the equal-width conducting bar is connected with the foil coil in a cold-pressing manner, the foil coil serves as a winding leading-out bar 103, and the outgoing line extension section 3 is connected with the transformer electrical busbar;
the other end of the conductive foil plate is cut into the conductive foil strips which are folded and stacked to serve as a winding end leading-out row 104, one end of the winding end leading-out row outside the conductive foil plate is used for grid-connected connection, and the conductive foil strips are directly bent to form a flexible connection structure to form integrated flexible connection, so that the integrated flexible connection is used in urban indoor use occasions with low requirements on noise and loss of a transformer.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (16)

1. A winding and outgoing method of a foil coil of a transformer is characterized by comprising the following steps:
s1, starting from any end of the conductive foil plate, cutting width e and cutting distance are setl 1 Cutting a plurality of conductive foil strips;
s2, folding each conductive foil strip with one cut end on one side along the same straight line where the cutting end point is located and on one side facing to the winding deviceβSequentially stacking the turned conductive foil strips;
s3, setting the axial center line of the winding device to be parallel to the same straight line where the cutting end point is located, taking the stacked conductive foil strips as a starting winding leading-out row for the uncut conductive foil plate, and winding along the circumferential direction of the winding device until the number of turns of a coil is set;
s4, cutting the other end according to the set cutting width e and cutting distancel 1 Cutting a plurality of conductive foil strips, wherein each cut conductive foil strip is turned over along the same straight line of the cutting end point and towards the outer side of the winding applianceβAnd thirdly, the folded conductive foil strips are sequentially stacked, and the stacked conductive foil strips are used as a winding end lead-out row.
2. The method for winding an outgoing line from a foil coil of a transformer according to claim 1, wherein the cutting distance is equal to or less than a predetermined distancel 1 Is larger than the width of the conductive foil plate.
3. The winding and outgoing method of the foil coil of the transformer as claimed in claim 2, wherein the conductive foil plate is made of copper foil or aluminum foil, and the degree of the bending isβIs 45 degrees.
4. The method for winding the outgoing line of the foil coil of the transformer as claimed in claim 2, wherein the width of the conductive foil plate is selected according to the specification of a winding device and the specification requirement of the transformer, and the selected width of the conductive foil plate is set asw 1 The number of the conductive foil strips cut out iskThe width e of each conductive foil strip isw 1 /kEach cut conductive foil strip has a length ofl 1 (ii) a Laminated conductive foil strip from inside to outsideOf 1 atiThe length of the winding-up leading-out row or the winding-up ending leading-out row formed by folding the conductive foil strips outside the conductive foil plate is as follows:
h i =l 1 -i*(w 1 /k)；
wherein, the first and the second end of the pipe are connected with each other,h i is shown asiThe length of the winding lead-out row formed by folding the conductive foil strips outside the conductive foil plate,i=1,2,3，…，kthe laminated conductive foil strips are from inside to outside, followingiThe increase in the number of the first and second,h i gradually decrease; when in useiGetkWhen the conductive foil strips positioned at the outermost side of the lamination are arranged outside the conductive foil plates, the length of the conductive foil strips is equal tol 1 -w 1 。
5. The winding and outgoing method of the foil coil of the transformer as claimed in claim 4, wherein the conductive foil strips are folded and laminated outside the conductive foil plate according to the required lead length, and a winding-up outgoing line or a winding-up outgoing line formed by all the cut top ends of the conductive foil strips being flush and the sheet bodies being laminated is obtained.
6. The winding method of the transformer foil coil according to any one of claims 1 to 5, wherein the direct current resistance of a winding-up lead-out row or a winding-up lead-out row formed by sequentially stacking the folded conductive foil strips is determined by the number of the folded conductive foil strips, and the number of the cut conductive foil strips is set askThe width of the conductive foil plate isw 1 The thickness of the conductive foil ishThe cross-sectional area of the conductive foil plate isw 1 hEach conductive foil strip has a width ofw 1 /kWhen the number of the folded conductive foil strips is equal tokThe total cross-sectional area of the folded and laminated conductive foil strips is then expressed as: (w 1 /k)*k*h=w 1 hThe total cross-sectional area of the folded and laminated conductive foil strips is the same as the cross-sectional area of the conductive foil plate, namely the current density is the same.
7. The method for winding the wire of the transformer foil coil according to claim 6, wherein when the transformer foil coil is wound, a plurality of conductive foil strips cut from one end of the conductive foil plate are cut off along the same straight line direction of the cutting end point, so as to reduce the number of the turned and laminated conductive foil strips, and the total number of the turned and laminated conductive foil strips is smaller than that of the turned and laminated conductive foil stripskThe direct current resistance of the leading-out row after winding or the leading-out row after winding is increased; when the number of the folded and laminated conductive foil strips is equal tokAnd when the direct current resistance of the leading-out row is reduced, a plurality of conductive foil strips with the same width and thickness as the stacked conductive foil strips are introduced into the stacked conductive foil strips according to actual requirements, and the direct current resistance of the leading-out row is reduced after the leading-out row is wound or the leading-out row is finished.
8. The winding and outgoing method of the foil coil of the transformer as claimed in claim 1, wherein in step S3, the uncut conductive foil plate takes the stacked conductive foil strips as a winding and outgoing line, when the uncut conductive foil plate is wound along the circumferential direction of the winding device, the hollow elastic air duct pipes (1) and the solid rigid air duct strips (2) are alternately arranged between the winding turns of the conductive foil plate, and after the winding is finished, the solid rigid air duct strips (2) are removed from the turns of the conductive foil plate.
9. The winding and outgoing method of the foil coil of the transformer according to claim 1, wherein the uncut conductive foil plate in step S3 is wound to a set number of turns of the coil, and a winding-up outgoing line formed by folding and stacking the conductive foil strips is arranged at one end outside the conductive foil plate and connected with an electrical bus of the transformer; one end of a winding end lead-out row formed by turning and folding the stacked conductive foil strips outside the conductive foil plate is used for grid-connected connection and is directly bent into a flexible connection structure to form integrated flexible connection.
10. The winding and outgoing method of the foil coil of the transformer as claimed in claim 9, wherein the winding and outgoing row is replaced by a conductive row with equal width, and when the winding and outgoing row is replaced by the conductive row with equal width, one end of the conductive foil plate where the winding and outgoing row is located is not cut, and the width of the conductive foil plate is equalThe conductive bar is connected with the conductive foil plate in a cold pressing manner to form a winding line, and the other end of the conductive foil plate is arranged according to the cutting width e and the cutting distancel 1 And cutting out a plurality of conductive foil strips, turning over each cut conductive foil strip by 45 degrees along the same straight line where the cutting end point is positioned and facing the outer side of the winding appliance, sequentially stacking the turned conductive foil strips, and taking the stacked conductive foil strips as a winding end leading-out row.
11. The method for winding the outgoing line of the foil coil of the transformer according to claim 10, wherein the equal-width conducting bar comprises an outgoing line extension section (3) and an embedded bar body (4), the embedded bar body (4) and the outgoing line extension section (3) are integrally formed, the bottom surface of the embedded bar body (4) is rectangular, the thickness of the embedded bar body (4) is reduced from the joint of the embedded bar body (4) and the outgoing line extension section (3) in sequence towards the other end of the embedded bar body (4), the width of the embedded bar body (4) is unchanged, and the embedded bar body (4) is embedded into a vertical barrier strip of a winding tool.
12. The transformer winding is characterized in that the winding is formed by winding a conductive foil plate, and a winding starting leading-out row of the winding is formed by cutting one end of the conductive foil plate by a set cutting width e and a set cutting distancel 1 The plurality of cut conductive foil strips are folded for 45 degrees along the same straight line of the cutting end point and towards the side of the winding device and then are laminated, and the winding end lead-out row of the winding is formed by cutting the width e and the cutting distance of the other end of the conductive foil plate according to the settingl 1 And the plurality of cut conductive foil strips are folded at an angle of 45 degrees along the same straight line where the cutting end point is positioned and towards the outer side of the winding device and then are laminated to form the conductive foil strip.
13. An energy-saving and environment-friendly transformer is characterized in that a winding of the transformer adopts a foil coil formed by winding a conductive foil plate, and an outlet wire is wound by using the winding outlet method of the transformer foil coil according to any one of claims 1 to 5 and 7 to 11 when the conductive foil plate is wound.
14. The energy-saving environment-friendly transformer of claim 13, wherein the transformer takes a conductive foil strip which is cut at one end of a conductive foil plate and folded and stacked as a winding lead-out row, and the winding lead-out row is connected with a transformer electrical bus; and cutting the other end of the conductive foil plate to form a folded and stacked conductive foil strip serving as a winding end lead-out row, and directly bending one end of the winding end lead-out row for grid-connected connection into a flexible connection structure to form integrated flexible connection.
15. The energy-saving environment-friendly transformer according to claim 13, wherein the transformer adopts an equal-width conductive bar to replace a winding lead-out bar, when the equal-width conductive bar replaces the winding lead-out bar, one end of a conductive foil plate where the winding lead-out bar is located is not cut, the equal-width conductive bar is connected with the conductive foil plate in a cold-pressing manner to form a winding line, and the other end of the conductive foil plate is cut according to the set cutting width e and the cutting distancel 1 Cutting a plurality of conductive foil strips, turning over each cut conductive foil strip along the same straight line where the cutting end point is located and facing the outer side of the winding die by 45 degrees, sequentially stacking the turned conductive foil strips, and taking the stacked conductive foil strips as a winding end lead-out row;
the equal-width conducting bar comprises an outgoing line extension section (3) and an embedded row body (4), the embedded row body (4) and the outgoing line extension section (3) are integrally formed, the bottom surface of the embedded row body (4) is rectangular, the thickness of the embedded row body (4) is reduced from the joint of the embedded row body (4) and the outgoing line extension section (3) in sequence, the width of the embedded row body (4) is unchanged, and the embedded row body (4) is embedded into a vertical stop strip of a winding device.
16. The energy-saving and environment-friendly transformer according to claim 15, wherein the transformer is embedded into a vertical barrier strip of a winding device by an embedded bar body (4) of a conductive bar with the same width, the conductive bar with the same width is connected with a foil coil in a cold pressing manner, the conductive bar with the same width is used as a winding leading-out bar, and a wire outlet extension section (3) of the conductive bar with the same width is connected with an electrical bus bar of the transformer;
and cutting the other end of the conductive foil plate to form a folded and stacked conductive foil strip serving as a winding end lead-out row, and directly bending the end of the winding end lead-out row outside the conductive foil plate to form an integrated flexible connection structure.
CN202211264189.6A 2022-10-17 2022-10-17 Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer Active CN115331954B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211264189.6A CN115331954B (en) 2022-10-17 2022-10-17 Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211264189.6A CN115331954B (en) 2022-10-17 2022-10-17 Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer

Publications (2)

Publication Number Publication Date
CN115331954A true CN115331954A (en) 2022-11-11
CN115331954B CN115331954B (en) 2023-01-24

Family

ID=83915402

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211264189.6A Active CN115331954B (en) 2022-10-17 2022-10-17 Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer

Country Status (1)

Country Link
CN (1) CN115331954B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE772357A (en) * 1970-09-08 1972-01-17 Poulsen Peder Ulrik ELECTRIC COIL INCLUDING A CONTINUOUS CONDUCTOR IN THE FORM OF A PROCESSED TAPE AND DEVICE FOR MAKING IT
US5805045A (en) * 1994-09-21 1998-09-08 Siemens Aktiengesellschaft Power supply conductor from a conductive foil of a foil winding of a power transformer
CN101383219A (en) * 2008-06-30 2009-03-11 广州广高高压电器有限公司 Copper array of dry transformer foil coil and manufacturing method thereof
CN202771925U (en) * 2012-08-27 2013-03-06 广东中鹏电气有限公司 Conducting bar used for transformer foil coil
JP2013172043A (en) * 2012-02-22 2013-09-02 Hitachi Industrial Equipment Systems Co Ltd Current transformer, coil unit for use in current transformer, and winding method of coil unit
US20150016018A1 (en) * 2013-07-10 2015-01-15 Murata Manufacturing Co., Ltd. Ceramic electronic component and method for manufacturing the same
CN104900387A (en) * 2015-06-26 2015-09-09 镇江天力变压器有限公司 Low-voltage large-current multiple-voltage output dry-type transformer and manufacturing method thereof
WO2019096321A1 (en) * 2017-11-20 2019-05-23 华为技术有限公司 Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system
CN112332040A (en) * 2020-08-31 2021-02-05 宁德时代新能源科技股份有限公司 Battery cell, battery pack, electric device, and method for manufacturing battery cell
CN213183919U (en) * 2020-07-21 2021-05-11 深圳市联明电源有限公司 Copper foil winding lead-out wire structure of foil type winding transformer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE772357A (en) * 1970-09-08 1972-01-17 Poulsen Peder Ulrik ELECTRIC COIL INCLUDING A CONTINUOUS CONDUCTOR IN THE FORM OF A PROCESSED TAPE AND DEVICE FOR MAKING IT
US5805045A (en) * 1994-09-21 1998-09-08 Siemens Aktiengesellschaft Power supply conductor from a conductive foil of a foil winding of a power transformer
CN101383219A (en) * 2008-06-30 2009-03-11 广州广高高压电器有限公司 Copper array of dry transformer foil coil and manufacturing method thereof
JP2013172043A (en) * 2012-02-22 2013-09-02 Hitachi Industrial Equipment Systems Co Ltd Current transformer, coil unit for use in current transformer, and winding method of coil unit
CN202771925U (en) * 2012-08-27 2013-03-06 广东中鹏电气有限公司 Conducting bar used for transformer foil coil
US20150016018A1 (en) * 2013-07-10 2015-01-15 Murata Manufacturing Co., Ltd. Ceramic electronic component and method for manufacturing the same
CN104900387A (en) * 2015-06-26 2015-09-09 镇江天力变压器有限公司 Low-voltage large-current multiple-voltage output dry-type transformer and manufacturing method thereof
WO2019096321A1 (en) * 2017-11-20 2019-05-23 华为技术有限公司 Coil, wireless charging receiving device, wireless charging transmitting device and wireless charging system
CN213183919U (en) * 2020-07-21 2021-05-11 深圳市联明电源有限公司 Copper foil winding lead-out wire structure of foil type winding transformer
CN112332040A (en) * 2020-08-31 2021-02-05 宁德时代新能源科技股份有限公司 Battery cell, battery pack, electric device, and method for manufacturing battery cell

Also Published As

Publication number Publication date
CN115331954B (en) 2023-01-24

Similar Documents

Publication Publication Date Title
CN106208435B (en) Stator assembly, motor with same, compressor and refrigeration equipment
CN204407147U (en) A kind of grounding transformer
WO2011004068A1 (en) Liquid cooling arrangement of an inductive component and a method for manufacturing an inductive component
CN115331954B (en) Transformer foil type coil winding and wire outgoing method, winding and energy-saving and environment-friendly transformer
CN106803456A (en) Foil cast winding and its manufacture method of a kind of four terminals of axial split one side
CN201364795Y (en) Transformer iron core with laminated sheet type three-phase spatial structure
CN209418254U (en) A kind of dry-type transformer
CN207021102U (en) A kind of post solid grade laminated transformer core of three frame three
CN106876130A (en) A kind of loop construction and its technique for coiling of three dimensional wound core casting dry type transformer
CN206628348U (en) A kind of foil cast winding of unilateral four terminals of axial split
CN101847493A (en) Bevel stacked triangular iron core structure
CN201689766U (en) Transformer with open coiled core
CN109786072B (en) Dry-type transformer
CN103106999A (en) Dry-type transformer
CN208954771U (en) A kind of section of winding formula annular power transformer
CN207425566U (en) A kind of folding stereo open core no-encapsulated-winding dry-type transformer
CN207474236U (en) Three-dimensional dry-type transformer for hatch winding iron core
CN105280357A (en) Novel efficient and energy-saving opening roll-core oil-immersed transformer
CN1231929C (en) Binding type triangle roll core three-phase transformer
CN205542322U (en) Green intelligent VX of high -speed heavy load hookup traction transformer
CN106373740B (en) A kind of machine body structure of oil immersion-type distribution transformer
CN101350244A (en) Hatch winding iron core
CN113990633A (en) Transformer high-voltage coil and winding method thereof
CN208674994U (en) Compressor, monocyclic-start induction motor and its stator, refrigerating circulatory device
KR20190084632A (en) Manufacturing method of the winding coil for the transformer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20221111

Assignee: Shenzhen lidashun Technology Co.,Ltd.

Assignor: GUANGZHOU YIBIAN POWER SOURCE EQUIPMENT Co.,Ltd.

Contract record no.: X2023980041768

Denomination of invention: Transformer foil coil winding method, winding and energy-saving and environmentally friendly transformer

Granted publication date: 20230124

License type: Common License

Record date: 20230914