CN201780861U - High-voltage transformer - Google Patents
High-voltage transformer Download PDFInfo
- Publication number
- CN201780861U CN201780861U CN 201020266463 CN201020266463U CN201780861U CN 201780861 U CN201780861 U CN 201780861U CN 201020266463 CN201020266463 CN 201020266463 CN 201020266463 U CN201020266463 U CN 201020266463U CN 201780861 U CN201780861 U CN 201780861U
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- CN
- China
- Prior art keywords
- electric conductor
- epoxy resin
- fuse core
- incoming cables
- plug
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a high-voltage transformer. A conductor at the primary inlet terminal, a conductor at the primary outlet terminal, a primary terminal connecting wire, a voltage induction coil and an iron core are all enclosed by an epoxy resin molded body formed via casting, the epoxy resin molded body is provided with a primary inlet terminal joint, a primary outlet terminal joint and a mounting hole holding a fuse core, one end of the fuse core is connected with the conductor at the primary inlet terminal while the other end is connected with the conductor at the primary outlet terminal, a plug for plugging the mounting hole is mounted at the outer end opening of the mounting hole, a semi-conductive material layer is arranged on the outer surface of the epoxy resin molded body except the primary inlet terminal joint, the primary outlet terminal joint and the mounting hole. Compared with the prior art, the high-voltage transformer has the advantages of simple structure and small volume, and the fuse core of the high-voltage transformer can be replaced conveniently.
Description
Technical field
The utility model relates to electric equipment manufacturing technology field, especially a kind of voltage transformer that is used for the high voltage operation environment.
Background technology
The existing high voltage potential transformer that is used for the high voltage operation environment, its electric conductor and secondary coil are encapsulated in the voltage transformer of solid insulating material inside, the link of its primary line is to expose being connected in gas medium with external primary line electric conductor, this solid insulation voltage transformer in working order down, the joint at its electric conductor two ends is a high potential, when this solid insulation voltage transformer is contained in the electric equipment, and be to realize insulation between the parts of electronegative potential by air insulated, in order to guarantee enough dielectric strengths, the requirement of this isolation distance makes that the equipment volume of making is huge; The primary winding leading-out terminal is connected with the high-pressure side of distribution system, make Potential distribution between high potential and the electronegative potential at the voltage transformer outer surface between the electronegative potential position of distribution system, the result of this Potential distribution causes not allowing in running status the staff to touch or near instrument transformer, otherwise shock hazard can take place, in order to guarantee staff's safety, prevent unexpected contact or close, in the prior art normally at voltage transformer arranged outside electronegative potential separator, this structure is comparatively complicated, exists mounting or dismounting to safeguard loaded down with trivial details problem.
The existing voltage transformer that is used for the high voltage operation environment includes an end of incoming cables and a leading-out terminal, voltage induced coil and iron core and be connected on end of incoming cables and leading-out terminal between the fuse core.An end of incoming cables of this high voltage potential transformer all is air insulated insulation, the electrical isolation distance and the creepage distance of the insulating requirements of this frame mode are enough big, supporting switchgear bulky, in order to guarantee staff's safety, prevent unexpected contact or close, normally be provided with the electronegative potential separator in addition in the voltage transformer outside in the prior art, the structure of this high voltage potential transformer is comparatively complicated, exists mounting or dismounting to safeguard loaded down with trivial details problem; In addition, the fuse core of existing this high voltage potential transformer just simply is crimped in the fuse core installing hole by plug, when needs dismounting fuse core, is difficult to the fuse core is taken out in fuse core installing hole.
Summary of the invention
Problem to be solved in the utility model provides that a kind of high-voltage electrical equipment that is applicable to miniaturization Design uses, high voltage potential transformer easy to use.
In order to address the above problem, the technical solution of the utility model is: this high voltage potential transformer, comprise an end of incoming cables electric conductor that is encapsulated in the epoxy resin pressure injection body, voltage induced coil and iron core and primary line output, be provided with fuse core installing hole in the described epoxy resin pressure injection body, in this fuse core installing hole, the fuse core is housed, in external port plug is housed at this fuse core installing hole, described epoxy resin pressure injection body is provided with the bolt connecting portion and is used for being tightly connected with external electric conductor insulating barrier outside electric conductor connectivity port, a described end of incoming cables composition surface, the outer surface of described epoxy resin pressure injection body except that described composition surface is provided with the semiconductive material layer, and the resistance value R of the every cm distance of outer surface of described semiconductive material layer is: 500 ohm≤R≤10000 ohm.
In the technique scheme, scheme can be more specifically: a described end of incoming cables electric conductor is a socket, part at the epoxy resin insulation material of this spigot has the little opening in big the inner, outer end, be provided with the connecting thread hole around this opening, the electric conductor in the described end of incoming cables of this spigot is a socket with spliced eye; One end of described fuse core is to be connected by the electric conductor of spring with a described end of incoming cables; The other end of fuse core be by be inlaid on described plug the inner that insulating material makes the plug electric conductor be located at described fuse core a conducting ring and a line end connecting line connection that is connected voltage transformer on the hole wall be installed, described plug electric conductor is provided with socket, between this socket and the described fuse core elastic conduction ring is housed.
The resistance value of the every cm distance of the utility model alleged semiconductive material layer outer surface is meant the resistance value between 2 of 1 centimetre of this laminar surface any distance.
The resistance value of the every cm distance of the utility model alleged semiconductive material layer outer surface is meant the resistance value between 2 of 1 centimetre of this laminar surface any distance.
Owing to adopted such scheme, the utility model compared with prior art has following beneficial effect:
1, at the electric conductor of an end of incoming cables and the electric conductor of a leading-out terminal, and voltage induced coil and iron core seal by the epoxy resin pressure injection body that cast forms, on the epoxy resin pressure injection body, be provided with the end of incoming cables joint one time, this structure of a leading-out terminal joint, in use, as long as externally implement to be tightly connected in the joint, the high potential parts of this high voltage potential transformer are isolated in the epoxy resin pressure injection body, the insulation property of epoxy resin pressure injection body can improve greatly its alternate and with the dielectric strength of equipment room, thereby can be so that adopt the device design of this high voltage potential transformer to get more compact, be suitable for using in the high-voltage electrical equipment of miniaturization Design.
2, remove an end of incoming cables joint, the outer surface of the epoxy resin pressure injection body outside leading-out terminal joint and the installing hole is provided with the semiconductive material layer of resistance value between 500 ohm-10000 ohm between one deck one centimetre, can make the outer surface of high voltage potential transformer obtain safe electronegative potential, can exempt the loaded down with trivial details and burdensome of separator is installed outside capacitor mutual-inductor.
3, the installing hole of fuse core is housed in being provided with on the epoxy resin pressure injection body, and an end of fuse core is connected with the electric conductor of an end of incoming cables, the other end is connected with the electric conductor of a leading-out terminal, the plug of this mouth of shutoff is housed in the external port of installing hole, the elastic conduction ring that links to each other with plug blocks fuse core termination, when changing fuse, can extract easily, make dismounting, to detect the fuse core very convenient, only need open the plug fuse core that just can take out or pack into.
Description of drawings
Fig. 1 is the front view of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing structure of the present utility model is described further.
The 1st, plug, the 2nd, epoxy resin pressure injection body, the 3rd, plug electric conductor, the 4th, fuse core, the 5th, spring, 6 is end of incoming cables electric conductors, the 7th, and voltage induced coil and iron core, 8 is line end connecting lines, the 9th, voltage induced coil lead-out wire, 10 is leading-out terminal electric conductors, the 11st, and semiconductive material layer, the 12nd, elastic conduction ring.
10, line end connecting lines 8 of 6, leading-out terminal electric conductors of an end of incoming cables electric conductor of high voltage potential transformer shown in Figure 1, voltage induced coil and iron core 7 seal by the epoxy resin pressure injection body 2 that pressure injection forms.The right-hand member of an end of incoming cables electric conductor 6 is provided with the jack that an inlet wire conductor that is used for importing with voltage is connected, in the epoxy resin pressure injection body 2 at end of incoming cables electric conductor 6 rears, be provided with an installing hole that is used to be installed in fuse core 4, fuse core 4 is housed in this installing hole, fuse core 4 is connected with an end of incoming cables electric conductor 6 by spring 5, the left end of fuse core 4 inserts in the socket of plug electric conductor 3, between plug electric conductor 3 and the fuse core 4 elastic conduction ring 12 is housed, plug electric conductor 3 is inlaid on the right-hand member of plug 1, plug 1 is made by the electrically insulating silicone rubber material, plug 1 is connected by screw in compression on the left side of epoxy resin pressure injection body 2, the external port of shutoff installing hole 3.
The right side of an end of incoming cables electric conductor 6 is to be used for importing the socket that electric conductor is connected with high pressure, part at the epoxy resin insulation material of this spigot has the little opening in big the inner, outer end, is provided with to be used for the screwed hole that is connected with high pressure input electric conductor joint sealing around this opening; Epoxy resin pressure injection body 2 removes an end of incoming cables joint socket, scribbles the semiconductive material layer 11 of resistance value between 500-10000 ohm between every centimetre of one deck on the outer surface outside leading-out terminal joint and the fuse core installing hole.
Claims (3)
1. high voltage potential transformer, comprise an end of incoming cables electric conductor that is encapsulated in the epoxy resin pressure injection body, voltage induced coil and iron core and a leading-out terminal electric conductor, be provided with fuse core installing hole in the described epoxy resin pressure injection body, in this fuse core installing hole, the fuse core is housed, external port at this fuse core installing hole is equipped with plug, it is characterized in that: described epoxy resin pressure injection body is provided with the bolt connecting portion and is used for being tightly connected with external electric conductor insulating barrier outside electric conductor connectivity port, a described end of incoming cables composition surface, the outer surface of described epoxy resin pressure injection body except that described composition surface is provided with the semiconductive material layer, and the resistance value R of the every cm distance of outer surface of described semiconductive material layer is: 500 ohm≤R≤10000 ohm.
2. high voltage potential transformer according to claim 1, it is characterized in that: a described end of incoming cables electric conductor is a socket, part at the epoxy resin insulation material of this spigot has the little opening in big the inner, outer end, be provided with the connecting thread hole around this opening, the electric conductor in the described end of incoming cables of this spigot is a socket with spliced eye.
3. high voltage potential transformer according to claim 1 and 2 is characterized in that: an end of described fuse core is to be connected by the electric conductor of spring with a described end of incoming cables; The other end of fuse core be by be inlaid on described plug the inner that insulating material makes the plug electric conductor be located at described fuse core a conducting ring and a line end connecting line connection that is connected voltage transformer on the hole wall be installed, described plug electric conductor is provided with socket, between this socket and the described fuse core elastic conduction ring is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020266463 CN201780861U (en) | 2010-07-22 | 2010-07-22 | High-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020266463 CN201780861U (en) | 2010-07-22 | 2010-07-22 | High-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780861U true CN201780861U (en) | 2011-03-30 |
Family
ID=43794067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020266463 Expired - Fee Related CN201780861U (en) | 2010-07-22 | 2010-07-22 | High-voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295752A (en) * | 2013-06-04 | 2013-09-11 | 衡阳一互电气有限公司 | Voltage transformer with fuse protection function used in C-GIS (cubicle gas insulated switchgear) of rail transit |
| CN104240930A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Special three-phase voltage transformer with protective device for solid ring network cabinet |
-
2010
- 2010-07-22 CN CN 201020266463 patent/CN201780861U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295752A (en) * | 2013-06-04 | 2013-09-11 | 衡阳一互电气有限公司 | Voltage transformer with fuse protection function used in C-GIS (cubicle gas insulated switchgear) of rail transit |
| CN104240930A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | Special three-phase voltage transformer with protective device for solid ring network cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20190722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |