CN210297539U - High-voltage wire outlet device of high-frequency power module of megawatt direct current conversion system - Google Patents
High-voltage wire outlet device of high-frequency power module of megawatt direct current conversion system Download PDFInfo
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- CN210297539U CN210297539U CN201921686977.8U CN201921686977U CN210297539U CN 210297539 U CN210297539 U CN 210297539U CN 201921686977 U CN201921686977 U CN 201921686977U CN 210297539 U CN210297539 U CN 210297539U
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Abstract
The utility model provides a high-voltage wire outlet device of a megawatt direct current conversion system high-frequency power supply module, which comprises an insulator and a high-voltage fuse, wherein the insulator adopts a column insulator; the column insulator comprises an internal conductor and an insulating cover with an umbrella skirt on the outside; a gap is arranged between the conductor and the insulating cover; the bottom section of the conductor at the gap is provided with an anti-creepage structure; the upper end of the electric conductor is also provided with a bending section and is connected with the high-voltage fuse through the bending section, and an included angle between the high-voltage fuse and the electric conductor is 93-95 degrees after the connection; the connecting part of the bending section of the electric conductor and the high-voltage fuse is positioned in an inner hole of the insulating sleeve; the lower end of the insulating sleeve is inserted into a gap between the electric conductor and the insulating cover and at least covers one part of the anti-creeping structure of the electric conductor; insulation gaps are reserved among the insulation sleeve, the conductor and the high-voltage fuse; the insulating sleeve is fixedly connected with an insulating cover of the column insulator. The utility model discloses save space, can satisfy 10kV creepage distance.
Description
The technical field is as follows:
the utility model belongs to the electric power field, concretely relates to megawatt level dc conversion system high frequency power module high pressure is qualified for the next round of competitions device is applicable to megawatt level dc conversion system high frequency power module.
Background art:
because the megawatt direct current conversion system is mostly used for the direct current grid connection of distributed energy, the application occasion mostly adopts container type installation, is limited by site installation and transportation conditions, and the size design space of the container is limited.
The megawatt direct current conversion system is arranged in the container and is formed by connecting a plurality of high-frequency power supply modules in parallel. The distance between the high-voltage outlet ends of the high-frequency power supplies in the row is short, the differential pressure reaches 20kV, and fusing equipment for preventing damage to equipment caused by overcurrent is required to be added when the high-frequency power supplies in the row are connected into a bus copper bar. Therefore, the parallel connection mode between the high-frequency power modules becomes a difficult point in design.
The existing connection between container devices mostly adopts the mode of overhead busbar access equipment or the mode of cables entering the cabinet body through a cable duct for outgoing lines and the like.
The outgoing line mode has limitation when being applied to containers of megawatt-level direct current conversion systems. Firstly, the air insulation distance is ensured between the bus bar and the metal conductor in the overhead bus outgoing mode, and the overhead bus needs a large space, so that the overhead bus is not suitable for use. Secondly, the megawatt-level direct current conversion system is in a parallel connection mode, a large number of wires are needed if cable outgoing connection is adopted, and cost consideration is not applicable. Through research, other wire outlet modes are not suitable for the situation, so a novel high-voltage wire outlet device suitable for a megawatt direct current conversion system high-frequency power supply module needs to be designed.
The invention content is as follows:
the utility model discloses parallelly connected in the container to megawatt level DC conversion system high frequency power module, high-pressure leading-out terminal space is narrow and small, leading-out terminal voltage level is high, insulation distance is short and leading-out terminal need removable fuse prevent overcurrent design these problems, provide a megawatt level DC conversion system high frequency power module high pressure outlet device, the utility model discloses technical scheme is as follows:
a high-voltage wire outlet device of a megawatt direct current conversion system high-frequency power supply module comprises an insulator and a high-voltage fuse, wherein the insulator is electrically connected with the high-voltage fuse,
the insulator adopts a column insulator, the column insulator comprises an internal electric conductor and an insulating cover with an umbrella skirt outside, a gap is arranged between the electric conductor and the insulating cover, and a bottom section of the electric conductor at the gap is provided with an anti-creeping structure;
the upper end of the electric conductor is also provided with a bending section and is connected with the high-voltage fuse through the bending section, and an included angle between the high-voltage fuse and the electric conductor is 93-95 degrees after the connection;
the connecting part of the bending section of the conductor and the high-voltage fuse is positioned in the insulating sleeve; the lower end of the insulating sleeve is also inserted into a gap between the conductor and the insulating cover and at least covers one part of the conductor anti-creeping structure; the insulating sleeve is fixedly connected with an insulating cover of the column insulator; insulation gaps are reserved among the insulation sleeve, the electric conductor and the high-voltage fuse.
Preferably, the bent section of the electric conductor is connected with the high-voltage fuse through threads.
Preferably, the insulating sleeve is fixedly connected with the insulating cover through a fixing plate and a bolt.
Preferably, the angle between the high voltage fuse and the electrical conductor is preferably 93 °.
Preferably, the insulating sleeve is also provided with a bending section, which is adapted to the bending section of the electrical conductor, and the insulating sleeve is inserted into the gap between the electrical conductor and the insulating cover through the bending section of the insulating sleeve.
Preferably, the lower end of the conductor of the column insulator is connected with a lead of a high-frequency power module of a direct-current conversion system.
Preferably, the insulating cover is made of epoxy materials or polytetrafluoroethylene materials.
Preferably, the insulating sleeve is made of epoxy or polytetrafluoroethylene.
Preferably, the electric conductor is made of copper.
Preferably, the outer diameter of the umbrella skirt of the insulating cover is 120mm, the inner diameter is 70mm, and the umbrella distance is 10 mm.
The utility model discloses compare and have following beneficial effect in prior art:
the column insulator adopted by the utility model has short size and space saving, and the umbrella skirt design of the outer wall of the insulating cover can meet the creepage distance of 10 kV;
the insulating sleeve adopted by the utility model can ensure the air insulation and creepage distance requirements of the exposed part of the high-voltage fuse to the metal part of the cabinet;
the utility model discloses high-voltage fuse one end is fixed with female arranging, and the other end is certain angle and insulator threaded connection, and this design saves space, safe and reliable, the change of being convenient for.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a cross-sectional view of the present invention;
in the figure: 1-an insulator; 2-an insulating sleeve; 3-a high-voltage fuse; 4-clearance;
1-1 electrical conductor; 1-2 insulating covers; 1-3 bending sections; 1-4 anti-creeping structure.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The first embodiment is as follows:
the embodiment adopts the high-voltage wire outlet device of the high-frequency power module of the megawatt-level direct current conversion system, which comprises an insulator 1, an insulating sleeve 2 and a high-voltage fuse 3, as shown in fig. 1, 2 and 3, the insulator of the embodiment adopts a column insulator; the column insulator comprises an inner conductor 1-1 and an outer insulating cover 1-2 with an umbrella skirt; the creepage distance and the air breakdown distance of 10kV voltage class are met. A gap 4 is arranged between the conductor 1-1 and the insulating cover 1-2; the bottom section of the conductor 1-1 at the gap 4 is provided with an anti-creepage structure 1-4; the lower end of the conductor 1-1 is connected with a direct current conversion system high-frequency power supply module lead, the upper end of the conductor 1-1 is also provided with a bending section 1-3 and is connected with a high-voltage fuse 3 through the bending section 1-3, and the bending section 1-3 is connected with the high-voltage fuse 3 through threads in the embodiment. After connection, an included angle between the high-voltage fuse 3 and the conductor 1-1 is 93-95 degrees; the outer surface of the insulating sleeve 2 of the embodiment is cuboid, and a cylindrical inner hole is adopted in the insulating sleeve; the connection part of the bending section 1-3 of the electric conductor and the high-voltage fuse 3 is positioned in the inner hole of the insulating sleeve 2; the lower end of the insulating sleeve 2 is inserted into a gap between the electric conductor 1-1 and the insulating cover 1-2 and at least covers one part of the anti-creeping structure 1-4 of the electric conductor; insulation gaps are reserved among the insulation sleeve 2, the electric conductor 1-1 and the high-voltage fuse 3; the design can effectively prevent the exposed part of the high-voltage fuse 3 from meeting the requirements of air insulation and creepage distance of the metal part of the cabinet. The insulating sleeve 2 is fixedly connected with an insulating cover 1-2 of the column insulator.
Example two:
the selected design of the present embodiment is: as shown in fig. 2 and 3, in this embodiment, the insulating cover is made of epoxy or teflon, the insulating sleeve is made of epoxy or teflon, and the conductor is made of copper. The insulating sleeve is fixedly connected with the insulating cover through a fixing plate and a bolt.
Example three:
the selected design of the present embodiment is: as shown in fig. 4, the angle between the high voltage fuse 3 and the conductor 1-1 is 93 ° in this embodiment. With the bend section adaptation of electric conductor, the insulating sleeve of this embodiment also is equipped with the bend section, and the insulating sleeve inserts clearance between electric conductor and the insulating boot through its bend section.
Example four:
the embodiment can be further designed as follows: the outer diameter of the umbrella skirt of the insulating cover is 120mm, the inner diameter of the umbrella skirt is 70mm, and the umbrella distance is 10 mm. A gap is arranged between the conductor and the insulating cover, and the depth of the gap is 80 mm; the outer surface of the insulating sleeve of the embodiment is in a rectangular parallelepiped shape of 120mm × 60mm × 60mm, and the insertion gap depth of the lower end of the insulating sleeve is 35 mm.
Claims (10)
1. The utility model provides a megawatt level direct current conversion system high frequency power module high pressure device of being qualified for the next round of competitions, includes insulator and high-voltage fuse, and insulator and high-voltage fuse electricity are connected, its characterized in that:
the insulator adopts a column insulator, the column insulator comprises an internal electric conductor and an insulating cover with an umbrella skirt outside, a gap is arranged between the electric conductor and the insulating cover, and a bottom section of the electric conductor at the gap is provided with an anti-creeping structure;
the upper end of the electric conductor is also provided with a bending section and is connected with the high-voltage fuse through the bending section, and an included angle between the high-voltage fuse and the electric conductor is 93-95 degrees after the connection;
the connecting part of the bending section of the conductor and the high-voltage fuse is positioned in the insulating sleeve; the lower end of the insulating sleeve is also inserted into a gap between the conductor and the insulating cover and at least covers one part of the conductor anti-creeping structure; the insulating sleeve is fixedly connected with an insulating cover of the column insulator; insulation gaps are reserved among the insulation sleeve, the electric conductor and the high-voltage fuse.
2. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 1, characterized in that: the bending section of the electric conductor is connected with the high-voltage fuse through threads.
3. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 2, characterized in that: the insulating sleeve is fixedly connected with the insulating cover through a fixing plate and a bolt.
4. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 3, characterized in that: the angle between the high voltage fuse and the conductor is preferably 93 °.
5. The high-voltage outlet device of the megawatt-class direct-current conversion system high-frequency power module as claimed in any one of claims 1 to 4, wherein: and the insulating sleeve is also provided with a bending section which is matched with the bending section of the electric conductor, and the insulating sleeve is inserted into the gap between the electric conductor and the insulating cover through the bending section of the insulating sleeve.
6. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 5, characterized in that: and the lower end of the conductor of the column insulator is connected with a lead of a high-frequency power module of the direct-current conversion system.
7. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 6, wherein: the insulating cover is made of epoxy materials or polytetrafluoroethylene materials.
8. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 7, characterized in that: the insulating sleeve is made of epoxy materials or polytetrafluoroethylene materials.
9. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 8, wherein: the conductor is made of copper.
10. The megawatt-class direct current conversion system high-frequency power module high-voltage wire outlet device according to claim 9, wherein: the outer diameter of the umbrella skirt of the insulating cover is 120mm, the inner diameter of the umbrella skirt is 70mm, and the umbrella distance is 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921686977.8U CN210297539U (en) | 2019-10-10 | 2019-10-10 | High-voltage wire outlet device of high-frequency power module of megawatt direct current conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921686977.8U CN210297539U (en) | 2019-10-10 | 2019-10-10 | High-voltage wire outlet device of high-frequency power module of megawatt direct current conversion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210297539U true CN210297539U (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921686977.8U Active CN210297539U (en) | 2019-10-10 | 2019-10-10 | High-voltage wire outlet device of high-frequency power module of megawatt direct current conversion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210297539U (en) |
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2019
- 2019-10-10 CN CN201921686977.8U patent/CN210297539U/en active Active
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