CN203811763U - Transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions - Google Patents
Transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions Download PDFInfo
- Publication number
- CN203811763U CN203811763U CN201420213724.XU CN201420213724U CN203811763U CN 203811763 U CN203811763 U CN 203811763U CN 201420213724 U CN201420213724 U CN 201420213724U CN 203811763 U CN203811763 U CN 203811763U
- Authority
- CN
- China
- Prior art keywords
- ring
- connecting hole
- grading ring
- cross bar
- conducting rod
- 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.)
- Expired - Lifetime
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 19
- 239000010931 gold Substances 0.000 claims description 19
- 229910052737 gold Inorganic materials 0.000 claims description 19
- 238000012360 testing method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Insulators (AREA)
Abstract
Provided is a transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions. The device comprises a grading ring and a connection fitting. The grading ring is in a dual-ring structure. The grading ring comprises an upper ring, a lower ring, and a connection support. The upper ring and the lower ring are divided into an upper layer and a lower layer, and the layers are parallel. The upper ring and the lower ring are connected through the connection support. The connection support comprises upright rods and horizontal rods. The upright rods are arranged vertically. The horizontal rods are arranged horizontally and an outer end is fixedly connected with the middle part of the upright rod. The upright rods and horizontal rods are distributed in a circular manner along the center line of the grading ring. The inner end of the horizontal rod extends inwards. One end of the horizontal rod is provided with a first connection hole. The connection fitting comprises a sleeve and a connecting rod horizontally arranged. The sleeve is in a cylindrical shape. Just one grading ring is needed to configure for transformer bushing end conducting rod in different dimensions. Through adjusting a fitting in suitable dimension or adjusting relative position of the fitting and the grading ring, the device realizes good voltage-sharing effect.
Description
Technical field
The utility model relates to ultra-high/extra-high voltage field transformer, the pressure-equalizing device of converter transformer valve-side sleeve during relate in particular to ± 800kV direct-current ultra high voltage converter power transformer partial discharge test.
Background technology
The grading ring of using in High-Voltage Electrical Appliances, high-tension testing apparatus, electric system (high-tension line, transformer station etc.) belongs to High-Voltage Electrical Appliances accessory, also can be regarded as a kind of in electric armour clamp.Similar to grading ring title there is shading ring, all press two kinds of shading rings.Grading ring Main Function is all to press, and is applicable to voltage form for what exchange, high-pressure uniform can be distributed in around object, and guarantee does not have potential difference (PD) between each position of annular, thereby reaches the effect of all pressing.
Grading ring is different by use, can be divided into arrester grading ring, lightning protection grading ring, insulator equalizing ring, mutual inductor grading ring, high-tension testing apparatus grading ring, power transmission and transformation line grading ring etc.Grading ring is different by material, can be divided into aluminum grading ring, stainless steel grading ring, iron grading ring etc.
The grading ring of using in China's High-Voltage Electrical Appliances and electric system (transformer station, high-tension line etc.) is at present mainly to process with aluminium alloy, and polishing is carried out on General Requirements grading ring surface, reaches smooth surface without burr.
When electrical equipment is carried out to local discharge test, for fear of playing a game, put to measure to produce and disturb, should install grading ring additional at test specimen live end, by controlling grading ring surface maximum field strength E
max, make its not bloom.
Utility model content
The purpose of this utility model is to provide a kind of bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod, can at utmost utilize grading ring.
The technical solution of the utility model is:
A kind of bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod, comprise grading ring and be connected gold utensil, grading ring is twin nuclei, grading ring comprises pressed on ring, lower ring and connection bracket, pressed on ring, lower ring is divided into upper and lower two-layer and is parallel to each other, pressed on ring, between lower ring, by connection bracket, connect, connection bracket comprises vertical rod and cross bar, vertical rod vertically arranges, cross bar is horizontally disposed with and outer one end is fixedly connected on the middle part of vertical rod, vertical rod and cross bar are all along the center line circle distribution of grading ring, inner one end of cross bar extends internally, the end of cross bar is provided with the first connecting hole, connect gold utensil and comprise sleeve and horizontally disposed connecting link, sleeve is cylindric, one end of connecting link is fixedly connected on the periphery of sleeve, and the other end of connecting link is provided with the second connecting hole, and the second connecting hole position of the first connecting hole of single cross bar and single connecting link is corresponding, corresponding cross bar overlaps with the center line of connecting link, between the first connecting hole and the second connecting hole, be bolted.
Between described the first connecting hole and the second connecting hole, be also connected with bolt of long stem, bolt of long stem vertically arranges, bolt of long stem two ends removably connect with the first connecting hole and the second connecting hole respectively, and the length of the length of bolt of long stem and tested transformer sleeve pipe end conducting rod to be connected is suitable.
Cross bar and connecting link, by four, all along the circumferential direction evenly arrange.
The external diameter of the internal diameter of sleeve and tested transformer sleeve pipe end conducting rod to be connected is suitable.
Advantage of the present utility model:
The first, grading ring strong adaptability.Transformer sleeve pipe end conducting rod to different size, only needs a grading ring of configuration, by adjusting the gold utensil of suitable dimension or the relative position of adjustment gold utensil and grading ring, can realize good all pressures effect;
The second, grading ring is easy to use, and the connection gold utensil in the utility model only need be sleeved on when mounted can be firm fixing on bushing shell for transformer conducting rod, do not need other loaded down with trivial details fixed form;
The 3rd, grading ring is lightweight, convenient transportation; Cost is low, and cost performance is high.
The utility model, by the mode of the independent assortment of the screw rod of connection gold utensil, a grading ring and four perfect threads of several different sizes of employing, has been realized and in process of the test, has only been needed a kind of grading ring of size just can solve all pressures in the test of different size bushing shell for transformer conducting rod.Can effectively the corona discharge in high-potting process be disturbed and be suppressed, the interference that is applicable to different size conducting rod bushing shell for transformer corona discharge suppresses.
Accompanying drawing explanation
The structural representation of Fig. 1 grading ring of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the structural representation that connects gold utensil;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the schematic diagram of use state;
Fig. 6 is the structural representation of tested bushing shell for transformer conducting rod length when longer;
Fig. 7 is tested bushing shell for transformer conducting rod length structural representation more in short-term.
Embodiment
As shown in Figure 5, the utility model comprises grading ring 1 and is connected gold utensil 2, as shown in Figure 1, 2, grading ring 1 is twin nuclei, comprises pressed on ring 3, lower ring 4 and connection bracket 5, and pressed on ring 3 and lower ring 4 are annulus, the two diameter is identical, and the two center line overlaps and the two is parallel to each other.Connection bracket 5 comprises four vertical vertical rod 5-1 that along the circumferential direction arrange, the middle part of every vertical rod is all fixedly connected with cross bar 5-2, and cross bar 5-2 extends internally, and four cross bar 5-2 make circle distribution centered by the center line of grading ring 1.The end of the inner one end of cross bar 5-2 is provided with for bolted the first connecting hole 5-3.
As shown in Figure 3,4, connect gold utensil 2 and comprise sleeve 2-1 and be fixedly connected on the connecting link 2-2 on sleeve 2-1 outer circumference face, totally four of connecting link 2-2, evenly arrange along sleeve 2-1 outer circumference face.One end, outside of connecting link 2-2 is provided with the second connecting hole 2-3.The position of connecting link 2-2 is corresponding one by one with contiguous cross bar 5-2 position, and the center line of the cross bar 5-2 of connecting link 2-2 and vicinity overlaps, and the first connecting hole 5-3 and the second adjacent connecting hole 2-3 correspondence, so that erection bolt 6.
The inside diameter D of sleeve 2-1 can be made several specifications as required, according to the difference of tested bushing shell for transformer conducting rod 7 diameters, uses the sleeve 2-1 of different inner diameters.
As shown in Figure 5, because the electric current of converter power transformer is different, the diameter of tested transformer sleeve pipe end conducting rod 7 will vary, and size and d by transposing gold utensil diameter D when conducting rod 7 diameter d in sleeve pipe termination change match and can easily install.This device is made three kinds of gold utensils that diameter D is different, when conducting rod 7 diameters, we install the gold utensil that diameter is large additional when thick, when conducting rod 7 diameters, we install the gold utensil that diameter is thin additional when thin, such installation has guaranteed center and the tested bushing shell for transformer conducting rod 7 end face center superpositions of grading ring end face all the time, thereby has reached to greatest extent the effect of all pressing.
As shown in Figure 6,7, because the extension elongation of conducting rod 7 is different, when wire is connected with conducting rod because design is upper, the contact area of needs is large, make the length of tested transformer sleeve pipe end conducting rod 7 will be very long, when conducting rod 7 length L in sleeve pipe termination change at grading ring 1 with connect to install additional between gold utensil 2 and make to connect gold utensil after the full flight screw that four length is identical and grading ring centre distance changes, thereby smoothly grading ring is installed.When conducting rod 7 is very long grading ring 1 be connected gold utensil 2 in the middle of add loading screw and make to connect gold utensil 2 to the direction translation away from sleeve pipe termination, while having avoided like this making to install because conducting rod 7 is oversize, give prominence to outside the equal pressure surface of grading ring conducting rod termination, produces the most advanced and sophisticated effect of all pressing that do not reach.
Therefore, the utility model also comprises four bolt of long stems 8, bolt of long stem 8 is screw bolt, the two ends up and down of bolt of long stem 8 are connected with the first connecting hole 5-3, the second connecting hole 2-3 respectively by nut, the length of the bolt of long stem 8 between the first connecting hole 5-3, the second connecting hole 2-3 can suitably regulate, and makes the position relationship of conducting rod 7, bushing shell for transformer and pressed on ring 3 or lower ring 4 meet electric installation requirement.Reached that cannula tip field intensity is minimum, the best object of grading ring shield effectiveness.
For convenient, regulate, the first connecting hole 5-3 or the second connecting hole 2-3 can be made into slotted hole, or the two is all made into slotted hole, ease of assembly.
In sum, the utility model terminal with compact integral structure, be skillfully constructed, thereby the utilization factor that can effectively improve grading ring improves work on the spot efficiency greatly.
Claims (4)
1. a bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod, it is characterized in that: comprise grading ring and be connected gold utensil, grading ring is twin nuclei, grading ring comprises pressed on ring, lower ring and connection bracket, pressed on ring, lower ring is divided into upper and lower two-layer and is parallel to each other, pressed on ring, between lower ring, by connection bracket, connect, connection bracket comprises vertical rod and cross bar, vertical rod vertically arranges, cross bar is horizontally disposed with and outer one end is fixedly connected on the middle part of vertical rod, vertical rod and cross bar are all along the center line circle distribution of grading ring, inner one end of cross bar extends internally, the end of cross bar is provided with the first connecting hole, connect gold utensil and comprise sleeve and horizontally disposed connecting link, sleeve is cylindric, one end of connecting link is fixedly connected on the periphery of sleeve, and the other end of connecting link is provided with the second connecting hole, and the second connecting hole position of the first connecting hole of single cross bar and single connecting link is corresponding, corresponding cross bar overlaps with the center line of connecting link, between the first connecting hole and the second connecting hole, be bolted.
2. the bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod according to claim 1, it is characterized in that: between described the first connecting hole and the second connecting hole, be also connected with bolt of long stem, bolt of long stem vertically arranges, bolt of long stem two ends removably connect with the first connecting hole and the second connecting hole respectively, and the length of the length of bolt of long stem and tested transformer sleeve pipe end conducting rod to be connected is suitable.
3. the bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod according to claim 1 and 2, is characterized in that: cross bar and connecting link, by four, all along the circumferential direction evenly arrange.
4. the bushing shell for transformer pressure-equalizing device that is applicable to various sizes conducting rod according to claim 1 and 2, is characterized in that: the external diameter of the internal diameter of sleeve and tested transformer sleeve pipe end conducting rod to be connected is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213724.XU CN203811763U (en) | 2014-04-29 | 2014-04-29 | Transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213724.XU CN203811763U (en) | 2014-04-29 | 2014-04-29 | Transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811763U true CN203811763U (en) | 2014-09-03 |
Family
ID=51450496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213724.XU Expired - Lifetime CN203811763U (en) | 2014-04-29 | 2014-04-29 | Transformer bushing voltage-sharing device suitable to be used for conducting rods in various dimensions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811763U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954892A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Transformer bushing voltage-sharing device suitable for conducting rods with various sizes |
| CN107706876A (en) * | 2017-10-30 | 2018-02-16 | 国网北京市电力公司 | Insulation tool |
-
2014
- 2014-04-29 CN CN201420213724.XU patent/CN203811763U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954892A (en) * | 2014-04-29 | 2014-07-30 | 国家电网公司 | Transformer bushing voltage-sharing device suitable for conducting rods with various sizes |
| CN103954892B (en) * | 2014-04-29 | 2017-02-15 | 国网河南省电力公司电力科学研究院 | Transformer bushing voltage-sharing device suitable for conducting rods with various sizes |
| CN107706876A (en) * | 2017-10-30 | 2018-02-16 | 国网北京市电力公司 | Insulation tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151009 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Electric Power Research Institute, State Grid Henan Electric Power Company Patentee after: Henan En Pai high-tech Group Co.,Ltd Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Electric Power Research Institute, State Grid Henan Electric Power Company |