CN220543705U - High-frequency transformer - Google Patents
High-frequency transformer Download PDFInfo
- Publication number
- CN220543705U CN220543705U CN202322249299.1U CN202322249299U CN220543705U CN 220543705 U CN220543705 U CN 220543705U CN 202322249299 U CN202322249299 U CN 202322249299U CN 220543705 U CN220543705 U CN 220543705U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- coil
- insulating cover
- insulating
- iron core
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000741 silica gel Substances 0.000 claims abstract description 26
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 26
- 238000009413 insulation Methods 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims description 12
- 239000000565 sealant Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 abstract description 5
- 229920001778 nylon Polymers 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
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- Insulating Of Coils (AREA)
Abstract
The utility model provides a high-frequency transformer, it includes the shell and with the insulating cover plate of shell lid, shell and insulating cover plate constitute a sealed cavity, installs iron core, iron core base in the cavity, twine on the iron core and have the coil, be full of transformer oil in the cavity, submerge iron core and coil, insulating cover plate on be provided with the high-voltage connection terminal who links to each other with the coil, low-voltage connection terminal, still offered the through-hole on insulating cover plate, the through-hole in inlay and be equipped with the insulating seal cover of wall, the bottom of insulating seal cover of wall is equipped with nylon insulation lock nut soon, has offered the through wires hole in the insulating seal cover of wall, high-voltage silica gel line links to each other with the coil after passing the through wires hole, the upper and lower both ends of through wires hole are provided with the screw hole, the locking wire insulating waterproof joint is equipped with in the screw hole internal rotation. The high-frequency transformer is characterized in that the high-voltage silica gel wire is inserted into the shell and then connected with the coil, transformer oil is utilized to insulate the connection part of the high-voltage silica gel wire, and the outer side of the high-voltage silica gel wire is provided with the insulation sealing structure penetrating through the insulation cover plate, so that the insulation sealing structure has the advantages of small volume, simple structure, good insulativity and good sealing property.
Description
Technical Field
The utility model relates to the field of transformers, in particular to a transformer applied to high-frequency high-voltage equipment such as a series resonance half-bridge soft switch, a DC/DC conversion circuit and the like.
Background
The high-frequency transformer is applied to high-frequency high-voltage equipment such as a series resonance half-bridge soft switch, a DC/DC conversion circuit and the like, a high-voltage silica gel wire in the transformer is required to be connected with a coil inside the transformer, the existing transformer is provided with a high-voltage silica gel wire connecting end connected with the coil outside the transformer, and then the high-voltage silica gel wire is connected to the high-voltage silica gel wire connecting end, so that the insulation performance of the structure at the connecting position of the high-voltage silica gel wire cannot be guaranteed.
The patent number 202022992824.5 of the oil-immersed transformer comprises an oil-immersed transformer body, wherein mounting frames are fixedly welded at two ends of the lower surface of the oil-immersed transformer body, a wiring body is fixedly arranged on the upper surface of the oil-immersed transformer body, a high-voltage wire is fixedly arranged at the end part of the wiring body, a fixing ring is arranged on the outer surface of the high-voltage wire, first clamping grooves are formed in two sides of the fixing ring, and a knob is screwed on the top end of the fixing ring; this kind of oil-immersed transformer through the both sides design first draw-in groove at solid fixed ring and at the tip design fixture block of flexible pole, can take place deformation through the flexible pole and take place the inside of fixture block joint at first draw-in groove, through sticis the tooth with the tip sticis block of connecting block and fixture block this moment, the lock back spin closes knob with fixture block and solid fixed ring fixed mounting, is convenient for be difficult for not hard up when taut installation through solid fixed ring is fixed for the high-tension line. The high voltage line connection is located outside the transformer body, and the insulation is also easily broken down when high voltage is applied.
Disclosure of Invention
The utility model aims to overcome the defects and shortcomings of the prior art and provide a transformer capable of greatly improving the insulation performance of a high-voltage silica gel wire junction.
The technical scheme adopted by the utility model for realizing the purposes is as follows: the high-frequency transformer comprises a shell and an insulating cover plate covered with the shell, wherein the shell and the insulating cover plate form a sealed cavity, an iron core and an iron core base are arranged in the cavity, a coil is wound on the iron core, transformer oil is filled in the cavity, the iron core and the coil are immersed, a high-voltage wiring terminal connected with the coil is arranged on the insulating cover plate, a through hole is further formed in the insulating cover plate, a wall-penetrating insulating sealing sleeve is embedded in the through hole, a nylon insulating sealing lock nut is rotatably arranged at the bottom of the wall-penetrating insulating sealing sleeve, a threading hole is formed in the wall-penetrating insulating sealing sleeve, a high-voltage silica gel wire is connected with the coil after penetrating through the threading hole, threaded holes are formed in the upper end and the lower end of the threading hole, and locking wire insulating waterproof connectors are arranged in the threaded holes in an internal rotation mode.
The upper end of the through-wall insulation sealing sleeve is provided with a glue filling groove, the glue filling groove is positioned above the threading hole, the glue filling groove is filled with sealant, and the top of the glue filling groove is provided with an insulation sealing plug.
The sealing ring is embedded on the through-wall insulating sealing sleeve, and the sealing ring covers the upper end edge of the through hole after the through-wall insulating sealing sleeve is embedded into the through hole.
The coil comprises a primary coil and a secondary coil, the high-voltage silica gel wire is connected to one end of the secondary coil after passing through the rectifier diode, and the other end of the secondary coil is connected to a high-voltage wiring terminal on the insulating cover plate; two ends of the primary coil are respectively connected with two low-voltage wiring terminals on the insulating cover plate.
The insulating cover plate is provided with a pressure release valve.
And an oil drain valve is arranged at the lower position of the side surface of the shell.
The insulating cover plate is provided with a grounding terminal which is connected with the shell.
The high-frequency transformer is characterized in that the high-voltage silica gel wire is inserted into the shell and then connected with the coil, transformer oil is utilized to insulate the connection part of the high-voltage silica gel wire, and the outer side of the high-voltage silica gel wire is provided with the insulation sealing structure penetrating through the insulation cover plate, so that the insulation sealing structure has the advantages of small volume, simple structure, good insulativity and good sealing property.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a cross-sectional view of the present utility model.
Description of the embodiments
As shown in fig. 1 and 2, the utility model is a high-frequency transformer, which comprises a shell 7 and an insulating cover plate 4 covered with the shell 7, wherein the shell 7 and the insulating cover plate 4 form a sealed cavity 7.1, an iron core 14 and an iron core base 15 are arranged in the shell 7 and are arranged in the cavity 7.1, a coil 16 is wound on the iron core 14, transformer oil is filled in the cavity 7.1, and the iron core 14 and the coil 16 are immersed for insulation. The insulating cover plate 4 is provided with a high-voltage wiring terminal 5 connected with the coil 16, a low-voltage wiring terminal 9, and a high-voltage silica gel wire 1 penetrates through the insulating cover plate 4 and then is connected with the coil 16, and an insulating cover is further wrapped on the outer side of the high-voltage silica gel wire 1 so as to ensure the insulating performance of the high-voltage silica gel wire 1. The coil 16 comprises a primary coil and a secondary coil, the high-voltage silica gel wire 1 is connected to one end of the secondary coil after passing through a rectifier diode, and the other end of the secondary coil is connected to the high-voltage wiring terminal 5 on the insulating cover plate 4; two ends of the primary coil are respectively connected with two low-voltage terminals 9 on the insulating cover plate 4.
The insulating cover plate 4 is also provided with a through hole, the through hole is embedded with a wall-penetrating insulating sealing sleeve 3, and the wall-penetrating insulating sealing sleeve 3 is made of nylon or high-insulating materials. The nylon insulation sealing lock nut 13 is screwed at the bottom of the wall-penetrating insulation sealing sleeve 3, so that the wall-penetrating insulation sealing sleeve 3 is fixed on the insulation cover plate 4. The sealing ring 12 is embedded on the wall-penetrating insulating sealing sleeve 3, and after the wall-penetrating insulating sealing sleeve 3 is embedded into the through hole, the sealing ring 12 coats the upper end edge of the through hole so as to prevent transformer oil from leaking from the through hole.
The threading hole 3.1 is formed in the wall-penetrating insulating sealing sleeve 3, the high-voltage silica gel wire 1 penetrates through the threading hole 3.1 and then is connected with the coil 16, transformer oil is utilized to insulate the joint of the high-voltage silica gel wire 1, and the insulating performance is greatly improved. Threaded holes 3.2 are formed in the upper end and the lower end of the threading hole 3.1, and locking wire insulation waterproof connectors 11 are arranged in the threaded holes 3.2 in a rotating mode and used for locking the high-voltage silica gel wire 1 and preventing transformer oil from leaking outwards.
The upper end of the wall-penetrating insulating sealing sleeve 3 is provided with a glue filling groove 3.3, the glue filling groove 3.3 is located above the threading hole 3.1, the glue filling groove 3.3 is filled with sealant, the top of the glue filling groove 3.3 is provided with an insulating sealing plug 2, and the insulating sealing plug 2 is made of nylon or high-insulation materials. The sealant and insulating sealing plug 2 can further enhance sealing and insulating properties.
The insulating cover plate 4 is provided with a pressure relief valve 10, and when the pressure in the cavity 7.1 is too high, the pressure is relieved through the pressure relief valve 10, so that the cavity 7.1 is prevented from being burst. An oil drain valve 8 is arranged at the lower side of the shell 7 and is used for draining transformer oil. The insulating cover plate 4 is also provided with a grounding terminal 6, and the grounding terminal 6 is connected with the shell 7 and is used for grounding.
The high-frequency transformer is characterized in that the high-voltage silica gel wire 1 is inserted into the shell 7 and then connected with the coil 16, transformer oil is utilized to insulate the joint of the high-voltage silica gel wire 1, and an insulating sealing structure penetrating through the insulating cover plate 4 is arranged on the outer side of the high-voltage silica gel wire 1, and the insulating sealing structure has the advantages of small size, simple structure, good insulativity and good sealing property.
Claims (7)
1. The high-frequency transformer comprises a shell and an insulating cover plate covered with the shell, wherein the shell and the insulating cover plate form a sealed cavity, an iron core and an iron core base are arranged in the cavity, a coil is wound on the iron core, transformer oil is filled in the cavity, the iron core and the coil are immersed, a high-voltage wiring terminal connected with the coil is arranged on the insulating cover plate, and a through hole is further formed in the insulating cover plate.
2. The high-frequency transformer according to claim 1, wherein the upper end of the through-wall insulation sealing sleeve is provided with a glue filling groove, the glue filling groove is positioned above the threading hole, the glue filling groove is filled with sealant, and the top of the glue filling groove is provided with an insulation sealing plug.
3. The high-frequency transformer according to claim 1, wherein the through-wall insulation sealing sleeve is embedded with a sealing ring, and the sealing ring covers the upper edge of the through hole after the through-wall insulation sealing sleeve is embedded into the through hole.
4. A high frequency transformer according to claim 1, 2 or 3, wherein the coil comprises a primary coil and a secondary coil, the high voltage silica gel wire is connected to one end of the secondary coil after passing through the rectifier diode, and the other end of the secondary coil is connected to a high voltage wiring terminal on the insulating cover plate; two ends of the primary coil are respectively connected with two low-voltage wiring terminals on the insulating cover plate.
5. A high frequency transformer according to claim 1, 2 or 3, characterized in that said insulating cover plate is provided with a pressure relief valve.
6. A high frequency transformer according to claim 1, 2 or 3, characterized in that the side of the housing is provided with an oil drain valve in a lower position.
7. A high frequency transformer according to claim 1, 2 or 3, wherein the insulating cover is provided with a ground terminal, which is connected to the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249299.1U CN220543705U (en) | 2023-08-22 | 2023-08-22 | High-frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249299.1U CN220543705U (en) | 2023-08-22 | 2023-08-22 | High-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220543705U true CN220543705U (en) | 2024-02-27 |
Family
ID=89975154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322249299.1U Active CN220543705U (en) | 2023-08-22 | 2023-08-22 | High-frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220543705U (en) |
-
2023
- 2023-08-22 CN CN202322249299.1U patent/CN220543705U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |