CN112599334A - Intermediate frequency transformer based on hoisting structure - Google Patents
Intermediate frequency transformer based on hoisting structure Download PDFInfo
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- CN112599334A CN112599334A CN202011406231.4A CN202011406231A CN112599334A CN 112599334 A CN112599334 A CN 112599334A CN 202011406231 A CN202011406231 A CN 202011406231A CN 112599334 A CN112599334 A CN 112599334A
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- framework
- primary coil
- copper insert
- hoisting
- secondary coil
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses an intermediate frequency transformer based on a hoisting structure, which comprises a secondary primary coil, a primary coil framework, a framework end cover, a hoisting bottom plate, a copper insert connecting plate, a copper insert, an air duct framework, a secondary coil framework and an encapsulating body. When the magnetic flux passes through the secondary coil, electromotive force is generated in the secondary coil, and if a load is placed on the secondary coil, current flows in the load, so that energy is transferred. The connecting pieces are uniformly stressed and reasonably stressed and transferred, the relative distance between the primary coil and the secondary coil is ensured to be constant during hoisting in the filling and sealing process, the problem of overlarge contact area caused by screw connection is reduced through plug welding of the wire head of the primary coil and the copper insert, the heat productivity is reduced, and the requirements of small size and high power density of the transformer are met.
Description
Technical Field
The invention relates to the field of power systems, in particular to an intermediate frequency transformer based on a hoisting structure.
Background
With the rapid development of emerging power grid technologies such as smart power grids and energy routing, the traditional transformer can not meet the requirement of building smart power grids in China, and the power electronic transformer can overcome the defects of large weight, high no-load loss, easy waveform distortion, failure isolation and the like of the traditional transformer as novel power distribution equipment, realizes multiple functions such as voltage transformation, electrical isolation, power regulation and control and meets the requirement of building the smart power grids.
The power electronic transformer has high requirements on the power density and efficiency of equipment, the size of the equipment is mainly influenced by a high-frequency transformer, and an intermediate-frequency transformer which is one of core components of the power electronic transformer is currently encapsulated by a primary winding and a secondary winding by epoxy resin to reduce the insulation distance.
The traditional medium-frequency transformer mainly comprises a primary winding, a secondary winding and a magnetic core, wherein the coil is connected by screws through a copper nose in a crimping manner, although the connection manner is simple to operate, the contact thermal resistance of the lap joint surface is large, the reduction of the heat productivity of the transformer is not facilitated, and the efficiency of the traditional medium-frequency transformer is reduced.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides the intermediate frequency transformer based on the hoisting structure, and through the hoisting equipment, the positions of the primary coil and the secondary coil are ensured to be constant, meanwhile, the heat productivity of the intermediate frequency transformer is reduced, and the working efficiency of the intermediate frequency transformer is improved.
In order to achieve the purpose, the invention provides an intermediate frequency transformer based on a hoisting structure, which comprises a primary coil, a primary coil framework, a framework end cover, a hoisting bottom plate, a copper insert connecting plate, a copper insert, an air duct framework, a secondary coil framework and a potting body, and is characterized in that:
a primary coil for providing an induced current on a high voltage side of the transformer;
a primary coil bobbin for supporting the primary coil;
the framework end cover is used for connecting the primary coil framework, so that the primary coil can be accurately positioned;
the hoisting bottom plate is used for transition connection of the framework end cover and the copper insert connecting plate;
the copper insert connecting plate is used for transition connection of the copper insert and the hoisting bottom plate;
the copper insert is used for connecting the transformer with an external wire;
the air duct framework is used for isolating the distance between the primary coil framework and the secondary coil framework and ensuring the air duct size of the potting body;
the secondary coil is used for providing induced current on the low-voltage side of the voltage transformation side;
a secondary coil bobbin for supporting the secondary coil;
the secondary coil is wound on the secondary coil framework and is fixed on the transformer encapsulating mold through limiting at two ends; the air duct framework is fixed on the transformer encapsulating mold through fixing holes at two ends, and the relative position of the air duct framework and the secondary coil is kept constant; the end covers of the frameworks at the two ends are assembled with the framework of the primary coil, the primary coil is compactly wound on the framework of the primary coil in a equidirectional spiral mode to form a reliably connected integrated structure, and the primary framework is connected with the hoisting bottom plate through the end covers of the frameworks; copper insert and copper insert connecting plate weld together, through the screw assembly to the hoist and mount bottom plate, have the screw hole on the copper insert, can hoist and mount this overall structure through exterior structure.
Further, the primary coil framework is of a tubular structure, and an encapsulation gap is formed in the axial direction of the primary coil framework, so that the primary coil framework can be conveniently assembled on the air duct framework.
Furthermore, the framework end cover is radially provided with an annular limiting groove, so that the primary coil framework can be conveniently and reliably installed.
Furthermore, the top of the framework end cover is provided with a screw hole and a limiting groove, so that the hoisting bottom plate is convenient to mount.
Furthermore, the hoisting bottom plate is provided with a screw mounting hole which is convenient to be connected with the framework end cover and the copper insert connecting plate.
Furthermore, the copper insert connecting plate is provided with a countersunk head screw hole which is convenient for reliable connection with the hoisting bottom plate.
Furthermore, the top of the copper insert is provided with a threaded hole for facilitating external hoisting operation, and the bottom of the copper insert is provided with a counter bore for facilitating welding of the primary coil to the copper insert.
The invention has the beneficial technical effects that: 1. through reasonable structural design, the transformer ensures that the primary coil is firmly wound on the primary coil framework, the relative position of the transformer between the primary coil and the secondary coil is constant in the filling and sealing process, and the external hoisting copper insert can ensure that the primary coil, the secondary coil and the framework cannot deform, so that the voltage resistance and the partial discharge of the transformer are ensured within the specified range. 2. The primary coil is connected to the copper insert in a welding mode, so that the problem of large thermal contact resistance caused by screw connection can be solved, the heat productivity of the transformer is reduced, and the efficiency of the transformer is improved.
Drawings
Fig. 1 is a schematic diagram of a hoisting structure-based intermediate frequency transformer after epoxy resin pouring is completed.
Fig. 2 is a schematic structural diagram of the intermediate frequency transformer based on the hoisting structure.
FIG. 3 is a welding diagram of a connecting plate and a copper insert of an intermediate frequency transformer based on a hoisting structure.
Fig. 4 is an overall appearance diagram of the intermediate frequency transformer framework end cover based on the hoisting structure.
Fig. 5 is a schematic diagram of the assembly of the intermediate frequency transformer bobbin end cover and the primary coil bobbin based on the hoisting structure.
Reference numerals: 1 is the embedment, 2 is the hoist and mount bottom plate, 3 is primary, 4 is the wind channel skeleton, 5 is secondary, 6 is secondary skeleton, 7 is the copper insert, 8 is the copper insert connecting plate, 9 is the skeleton end cover, 10 is primary.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The utility model provides an intermediate frequency transformer based on hoisting structure, includes the potting body 1, hoist and mount bottom plate 2, primary coil 3, wind channel skeleton 4, secondary coil 5, secondary coil skeleton 6, copper insert 7, copper insert connecting plate 8, skeleton end cover 9, primary coil skeleton 10.
As shown in fig. 1, a schematic diagram of the intermediate frequency transformer after epoxy resin filling is completed, the primary winding and the secondary winding are usually encapsulated by epoxy resin to reduce the insulation distance, so as to ensure that partial discharge, withstand voltage and size meet the requirements of the overall design.
Fig. 2 is a schematic structural diagram of the present invention, in which a secondary coil 5 is wound on a secondary coil frame 6, and the secondary coil 5 and the secondary coil frame 6 are integrally fixed on a transformer potting mold by fixing the two ends of the secondary coil frame 6 for limiting, so as to ensure the fixation of the relative position of the primary coil 5; the fixing holes at the two ends of the air duct framework 4 are fixed on the transformer encapsulating mold, so that the relative distance between the air duct framework and the secondary coil 5 and the relative distance between the air duct framework and the primary coil 3 are fixed.
FIG. 3 is a schematic diagram of a copper insert 7 and a copper insert connecting plate 8 welded together, wherein a mounting screw hole is formed in the top of the copper insert 7, two counter bores are designed in the upper portion of the copper insert connecting plate 8, the copper insert connecting plate 8 can be connected to a hoisting bottom plate 2 through two counter bore mounting fastening screws, and the integral structure can be hoisted by applying external force to the copper insert 7, so that encapsulation is facilitated; the bottom of the copper insert is designed with a countersunk hole, and the wire end of the primary coil 3 is inserted into the countersunk hole at the bottom of the copper insert and is firmly soldered.
As shown in fig. 4, the framework end cover 9 is designed with a limit groove, and the installation area of the top opening is designed with 2 installation screws;
as shown in fig. 5, the primary coil bobbin 10 and the two end bobbin end caps 9 are assembled together, and the constancy of the axial distance between the primary coil bobbin 10 and the two end bobbin end caps is ensured through the limiting groove, then the primary coil 3 is compactly wound on the primary coil bobbin 10 in a equidirectional spiral mode to form a reliably connected integrated structure, and the integrated structure is connected with the hoisting bottom plate 2 through two mounting screw holes at the two ends of the bobbin end caps 9, so that a welded piece made of the copper insert 7 and the copper insert connecting plate 8 is kept to form a reliably stressed integrated structure.
With the above-described embodiments, two problems mentioned in the background art are successfully solved. The connecting pieces are uniformly stressed and reasonably stressed and transferred, so that the relative distance between the primary coil and the secondary coil is constant, the problem of overlarge contact area caused by screw connection is reduced through plug welding of the wire head of the primary coil and the copper insert, and the heat productivity is reduced.
When a power supply voltage is applied to the primary coil of the intermediate frequency transformer, no-load current is generated in the primary coil, and the current establishes a magnetic field to generate magnetic flux. When the magnetic flux passes through the secondary coil, an electromotive force is generated in the secondary coil, and if a load is provided on the secondary coil, a current is generated in the load, so that energy is transferred from the primary circuit to the secondary circuit.
In the above embodiments, a typical primary and secondary winding potting method of an intermediate frequency transformer is used, and as another embodiment, the present invention can also be applied to a high frequency transformer and a low frequency transformer.
The above-mentioned embodiments are illustrative of the specific embodiments of the present invention, and are not restrictive, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should be included in the scope of the present invention.
Claims (7)
1. The utility model provides an intermediate frequency transformer based on hoisting structure, includes primary coil, primary coil skeleton, skeleton end cover, hoist and mount bottom plate, copper insert connecting plate, copper insert, wind channel skeleton, secondary coil skeleton and the encapsulation body, its characterized in that:
a primary coil for providing an induced current on a high voltage side of the transformer;
a primary coil bobbin for supporting the primary coil;
the framework end cover is used for connecting the primary coil framework, so that the primary coil can be accurately positioned;
the hoisting bottom plate is used for transition connection of the framework end cover and the copper insert connecting plate;
the copper insert connecting plate is used for transition connection of the copper insert and the hoisting bottom plate;
the copper insert is used for connecting the transformer with an external wire;
the air duct framework is used for isolating the distance between the primary coil framework and the secondary coil framework and ensuring the air duct size of the potting body;
a secondary coil for providing an induced current on a low voltage side of the low voltage side;
a secondary coil bobbin for supporting the secondary coil;
the secondary coil is wound on the secondary coil framework and is fixed on the transformer encapsulating mold in a limiting manner through two ends of the secondary coil framework; the air duct framework is fixed on the transformer encapsulating mold through fixing holes at two ends, and the relative position of the air duct framework and the secondary coil is kept constant; the end covers of the frameworks at the two ends are assembled with the framework of the primary coil, the primary coil is compactly wound on the framework of the primary coil in a equidirectional spiral mode to form a reliably connected integrated structure, and the primary framework is connected with the hoisting bottom plate through the end covers of the frameworks; copper insert and copper insert connecting plate weld together, through the screw assembly to the hoist and mount bottom plate, have the screw hole on the copper insert, can hoist and mount this overall structure through exterior structure.
2. The hoisting structure-based intermediate frequency transformer according to claim 1, wherein the primary winding frame is a tubular structure, and a gap is axially formed in the primary winding frame to facilitate assembly of the primary winding frame to the air duct frame.
3. The hoisting structure-based intermediate frequency transformer of claim 1, wherein the bobbin end cover is radially designed with an annular limiting groove to facilitate reliable mounting of the primary coil bobbin.
4. The hoisting structure-based intermediate frequency transformer of claim 1, wherein the top of the skeleton end cover is designed with a screw hole and a limiting groove, which is convenient for installing a hoisting bottom plate.
5. The intermediate frequency transformer based on the hoisting structure of claim 1, wherein the hoisting bottom plate is designed with screw mounting holes for facilitating connection with the framework end cover and the copper insert connecting plate.
6. The intermediate frequency transformer based on the hoisting structure as claimed in claim 1, wherein the copper insert connecting plate is provided with countersunk screw holes for reliable connection with the hoisting bottom plate.
7. The hoisting structure-based intermediate frequency transformer of claim 1, wherein the top of the copper insert is designed with a threaded hole for facilitating external hoisting operation, and the bottom is designed with a countersunk hole for facilitating welding of the primary coil to the copper insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406231.4A CN112599334A (en) | 2020-12-05 | 2020-12-05 | Intermediate frequency transformer based on hoisting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406231.4A CN112599334A (en) | 2020-12-05 | 2020-12-05 | Intermediate frequency transformer based on hoisting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112599334A true CN112599334A (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011406231.4A Withdrawn CN112599334A (en) | 2020-12-05 | 2020-12-05 | Intermediate frequency transformer based on hoisting structure |
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| CN (1) | CN112599334A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203085331U (en) * | 2013-01-21 | 2013-07-24 | 东莞市康德威变压器有限公司 | Dry type transformer tapping nut structure |
| US20140102430A1 (en) * | 2012-10-17 | 2014-04-17 | Denso Corporation | Ignition coil for internal combustion engine |
| CN204991433U (en) * | 2015-10-12 | 2016-01-20 | 山东泰开电力电器有限公司 | Novel pouring type current transformer secondary winding is fixed device |
| CN105261438A (en) * | 2015-10-19 | 2016-01-20 | 中国科学院近代物理研究所 | Helium groove of compound superconducting solenoid magnet coil |
| CN206505821U (en) * | 2017-02-16 | 2017-09-19 | 广州广高高压电器有限公司 | A kind of casting mold of dry-type transformer |
| CN109755010A (en) * | 2019-03-13 | 2019-05-14 | 浙江天际互感器有限公司 | A kind of voltage transformer with air duct radiation and secondary fusing |
| CN110808151A (en) * | 2019-11-18 | 2020-02-18 | 安徽英大科特磁电科技有限公司 | Two-way reactor |
| CN111524693A (en) * | 2020-05-09 | 2020-08-11 | 上海硕大电子科技有限公司 | Solenoid coil |
| CN211699972U (en) * | 2020-05-15 | 2020-10-16 | 重庆力华自动化技术有限责任公司 | Electric spraying ignition coil for motorcycle engine |
-
2020
- 2020-12-05 CN CN202011406231.4A patent/CN112599334A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140102430A1 (en) * | 2012-10-17 | 2014-04-17 | Denso Corporation | Ignition coil for internal combustion engine |
| CN203085331U (en) * | 2013-01-21 | 2013-07-24 | 东莞市康德威变压器有限公司 | Dry type transformer tapping nut structure |
| CN204991433U (en) * | 2015-10-12 | 2016-01-20 | 山东泰开电力电器有限公司 | Novel pouring type current transformer secondary winding is fixed device |
| CN105261438A (en) * | 2015-10-19 | 2016-01-20 | 中国科学院近代物理研究所 | Helium groove of compound superconducting solenoid magnet coil |
| CN206505821U (en) * | 2017-02-16 | 2017-09-19 | 广州广高高压电器有限公司 | A kind of casting mold of dry-type transformer |
| CN109755010A (en) * | 2019-03-13 | 2019-05-14 | 浙江天际互感器有限公司 | A kind of voltage transformer with air duct radiation and secondary fusing |
| CN110808151A (en) * | 2019-11-18 | 2020-02-18 | 安徽英大科特磁电科技有限公司 | Two-way reactor |
| CN111524693A (en) * | 2020-05-09 | 2020-08-11 | 上海硕大电子科技有限公司 | Solenoid coil |
| CN211699972U (en) * | 2020-05-15 | 2020-10-16 | 重庆力华自动化技术有限责任公司 | Electric spraying ignition coil for motorcycle engine |
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Application publication date: 20210402 |