CN215815544U - Transformer bushing voltage-sharing ball structure - Google Patents
Transformer bushing voltage-sharing ball structure Download PDFInfo
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- CN215815544U CN215815544U CN202122384906.6U CN202122384906U CN215815544U CN 215815544 U CN215815544 U CN 215815544U CN 202122384906 U CN202122384906 U CN 202122384906U CN 215815544 U CN215815544 U CN 215815544U
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- voltage
- central conductor
- bushing
- sharing ball
- bushing body
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- 239000004020 conductor Substances 0.000 claims abstract description 59
- 239000012212 insulator Substances 0.000 claims abstract description 21
- 230000007704 transition Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a transformer bushing voltage-sharing ball structure which comprises a high-voltage bushing body and voltage-sharing balls, wherein the voltage-sharing balls are arranged at the tail end of the high-voltage bushing body, a central conductor is arranged in the high-voltage bushing body and comprises a plurality of central conductor sections, the end parts of every two central conductor sections are electrically connected, the central conductor sections are connected through telescopic joints, the central conductor sections move relative to the telescopic joints, and insulators are further arranged on the central conductors and provide support for the central conductors. The utility model can effectively solve the problems of deformation and position of the central conductor under the action of expansion with heat and contraction with cold, simultaneously ensure that the central conductor does not deviate and oscillate from the central position, and simultaneously keep the stability on mechanical property and the insulation on the outer side of the high-voltage bushing body on electrical property.
Description
Technical Field
The utility model relates to the technical field of high-voltage transformer devices, in particular to a voltage-sharing ball structure of a transformer bushing.
Background
The transformer bushing is a main insulation device outside the transformer box, and the outgoing lines of the transformer winding must penetrate through the insulation bushing to insulate the outgoing lines and the outgoing lines from the transformer shell, and meanwhile, the transformer bushing plays a role in fixing the outgoing lines. The insulating structure, the insulating medium that contain in the narrow and small region of sleeve pipe afterbody are numerous, and electric field distribution is very inhomogeneous, need install the voltage-sharing ball and improve electric field distribution, avoids the emergence of insulating accidents such as corona, flashover. The central conductor in the existing bushing is influenced by various factors such as environment, weather and the like, so that the central conductor is deformed and displaced, even is broken, and has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems, the present invention provides a voltage-sharing ball structure for a transformer bushing, which can effectively solve the problems of deformation and position of a central conductor under the action of thermal expansion and cold contraction, and simultaneously maintain the stability of mechanical properties and the insulation of electrical properties to the outer side of a high-voltage bushing body.
The technical scheme of the utility model is as follows:
the utility model provides a transformer bushing voltage-sharing ball structure, includes high-voltage bushing body and voltage-sharing ball, high-voltage bushing body end is provided with the voltage-sharing ball, the inside central conductor that is provided with of high-voltage bushing body, central conductor includes multistage central conductor section, two liang the tip electric connection of central conductor section, the multistage pass through between the central conductor section the telescopic joint is connected, the central conductor section for the telescopic joint motion, still be provided with the insulator on the central conductor, the insulator does the central conductor provides the support.
Optionally, the telescopic joint is a telescopic sleeve, the telescopic sleeve is disposed at an end of the central conductor section, two ends of the central conductor section are disposed in the telescopic sleeve, and a space for moving the end of the central conductor section is formed inside the telescopic sleeve.
Optionally, the telescopic joint is made of conductive expanded metal, symmetrical grooves are formed in two sides of the telescopic joint, and the end of the central conductor section is arranged in the groove of the telescopic joint and fixedly connected with the telescopic joint.
Optionally, the insulator is a basin-type insulator, one end of the basin-type insulator is connected with the inner wall of the high-voltage bushing body, and the other end of the basin-type insulator is connected with the central conductor.
Optionally, the end of the high-voltage bushing body is detachably connected with the pressure equalizing ball, and the pressure equalizing ball is connected with the end of the high-voltage bushing body through threads.
Optionally, the pressure equalizing ball is formed by smooth transition of multiple circular arcs, the circular arc with the small radius is close to the end of the high-voltage bushing body, and the circular arc with the large radius is located far away from the end of the high-voltage bushing body.
Compared with the prior art, the utility model has the beneficial effects that: (1) by arranging the expansion joint between the central conductors, the problems of deformation and position of the central conductors under the action of expansion with heat and contraction with cold can be effectively solved; (2) meanwhile, the central conductor is supported by mechanical strength through the basin-type insulator, so that the central conductor is prevented from deviating and oscillating from the central position, the stability of mechanical performance is kept, and the outer side of the high-voltage bushing body is insulated in electrical performance.
Drawings
Fig. 1 is a schematic structural diagram of a voltage-sharing ball structure of a transformer bushing according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage-sharing ball structure of a transformer bushing according to a second embodiment of the present invention;
reference numerals: the high-voltage bushing comprises a high-voltage bushing 1, an expansion joint 2, a basin-type insulator 3, a central conductor 4 and a voltage-sharing ball 5.
Detailed Description
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
As shown in fig. 1, a first embodiment of the present invention provides a transformer bushing voltage-sharing ball structure, including a high-voltage bushing body 1 and a voltage-sharing ball 5, where the voltage-sharing ball 5 is disposed at a tail end of the high-voltage bushing body 1, a central conductor 4 is disposed inside the high-voltage bushing body 1, the central conductor 4 includes multiple central conductor sections, ends of two central conductor sections are electrically connected, the multiple central conductor sections are connected by a telescopic joint 2, the central conductor section moves relative to the telescopic joint 2, an insulator 3 is further disposed on the central conductor 4, and the insulator 3 provides a support for the central conductor 4.
Wherein, telescopic joint 2 is the telescopic tube, and the telescopic tube setting is in the tip of central conductor section, and the tip of two central conductor sections sets up in the telescopic tube, and the inside space that forms central conductor section tip and remove of telescopic tube. The deformation and position problems of the central conductor under the action of expansion with heat and contraction with cold can be effectively buffered.
The insulator 3 is a basin-type insulator, one end of the basin-type insulator is connected with the inner wall of the high-voltage bushing body 1, and the other end of the basin-type insulator is connected with the central conductor 4.
Wherein, 1 end of high-voltage bushing body is connected with voltage-sharing ball 5 can be dismantled, and voltage-sharing ball 5 passes through the screw thread and is connected with 1 end of high-voltage bushing body. The central conductor can be ensured not to deviate and oscillate from the central position, and the stability of the mechanical property and the insulation of the outer side of the high-voltage bushing body on the electrical property are also kept.
The pressure equalizing ball 5 is formed by smooth transition of a plurality of sections of circular arcs, the circular arc with the small radius is close to the tail end of the high-voltage bushing body 1, and the circular arc with the large radius is located far away from the tail end of the high-voltage bushing body 1. The pressure equalizing ball 5 is formed by smooth transition of a plurality of sections of circular arcs with different curvature radiuses. For example, in an alternative, theoretically, a pressure-equalizing ball formed by smooth transition of a plurality of sections of circular arcs with different curvature radii has better surface field intensity uniformity, but in order to reduce the difficulty of engineering manufacturing, the cross section of the pressure-equalizing ball generally consists of four sections of arc surfaces, wherein the upper arc surface and the lower arc surface are 1/4 circular arcs, and the middle section is two sections of 1/4 elliptical arcs.
As shown in fig. 2, a second embodiment of the present invention provides a transformer bushing voltage-sharing ball structure, where a telescopic joint in the transformer bushing voltage-sharing ball structure is different from that in the first embodiment, and specifically, the following structures are provided: the telescopic joint in the second embodiment is made of conductive expanded metal, symmetrical grooves are formed in two sides of the telescopic joint, and the end of the central conductor section is arranged in the groove of the telescopic joint and is fixedly connected with the telescopic joint. The problem of deformation and position of the central conductor under the action of expansion with heat and contraction with cold can be effectively solved, so that the structure of the whole transformer bushing pressure equalizing ball is more stable and safe.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (6)
1. The utility model provides a transformer bushing voltage-sharing ball structure, its characterized in that, includes high-voltage bushing body and voltage-sharing ball, high-voltage bushing body end is provided with the voltage-sharing ball, the inside central conductor that is provided with of high-voltage bushing body, central conductor includes multistage central conductor section, two liang the tip electric connection of central conductor section, the multistage between the central conductor section connect through the telescopic joint, the central conductor section for the telescopic joint motion, still be provided with the insulator on the central conductor, the insulator does the central conductor provides the support.
2. The transformer bushing voltage-sharing ball structure according to claim 1, wherein the telescopic joint is a telescopic bushing, the telescopic bushing is disposed at an end of the central conductor section, ends of two central conductor sections are disposed inside the telescopic bushing, and the inside of the telescopic bushing forms a space for the end of the central conductor section to move.
3. The transformer bushing voltage-sharing ball structure according to claim 1, wherein the expansion joint is made of conductive expanded metal, symmetrical grooves are formed in two sides of the expansion joint, and the end of the central conductor section is arranged in the groove of the expansion joint and fixedly connected with the expansion joint.
4. The transformer bushing voltage-sharing ball structure according to claim 1, wherein the insulator is a basin-type insulator, one end of the basin-type insulator is connected with the inner wall of the high-voltage bushing body, and the other end of the basin-type insulator is connected with the central conductor.
5. The transformer bushing voltage-sharing ball structure according to claim 1, wherein the end of the high-voltage bushing body is detachably connected with the voltage-sharing ball, and the voltage-sharing ball is connected with the end of the high-voltage bushing body through a thread.
6. The transformer bushing voltage-sharing ball structure according to claim 1, wherein the voltage-sharing ball is formed by smooth transition of a plurality of circular arcs, the circular arc with the smaller radius is close to the end of the high-voltage bushing body, and the circular arc with the larger radius is far from the end of the high-voltage bushing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384906.6U CN215815544U (en) | 2021-09-29 | 2021-09-29 | Transformer bushing voltage-sharing ball structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122384906.6U CN215815544U (en) | 2021-09-29 | 2021-09-29 | Transformer bushing voltage-sharing ball structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215815544U true CN215815544U (en) | 2022-02-11 |
Family
ID=80168010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122384906.6U Active CN215815544U (en) | 2021-09-29 | 2021-09-29 | Transformer bushing voltage-sharing ball structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215815544U (en) |
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2021
- 2021-09-29 CN CN202122384906.6U patent/CN215815544U/en active Active
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