CN221078738U - Voltage equalizing cap for plug-in transformer partial discharge test - Google Patents
Voltage equalizing cap for plug-in transformer partial discharge test Download PDFInfo
- Publication number
- CN221078738U CN221078738U CN202323042669.0U CN202323042669U CN221078738U CN 221078738 U CN221078738 U CN 221078738U CN 202323042669 U CN202323042669 U CN 202323042669U CN 221078738 U CN221078738 U CN 221078738U
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- Prior art keywords
- spring
- fingered citron
- voltage
- cap
- partial discharge
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- 240000007126 Citrus medica var. sarcodactylis Species 0.000 claims abstract description 33
- 230000008093 supporting effect Effects 0.000 claims abstract description 25
- 238000013016 damping Methods 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000007792 addition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a voltage equalizing cap for a plug-in type transformer partial discharge test, which comprises damping springs, spring pressing plates, spring sleeves, supporting transverse plates, fingered citron clamping pieces, supporting vertical plates and a voltage equalizing cap shell, wherein the spring sleeves are arranged at the top of the voltage equalizing cap shell, the damping springs are pressed into the spring sleeves through the spring pressing plates, the spring sleeves are arranged on the supporting transverse plates, the number of the supporting transverse plates is two, the two supporting transverse plates are symmetrically distributed on two sides of the spring sleeves, one ends, close to the two supporting transverse plates, of the two supporting transverse plates are respectively connected with the fingered citron clamping pieces, the fingered citron clamping pieces are contacted with the spring pressing plates, the supporting vertical plates are arranged on the supporting transverse plates, and the supporting vertical plates are tangential to the outer walls of the spring sleeves. The utility model can ensure the reliable connection of the pressure equalizing cap and the fingered citron, can also alleviate the hard injury caused by installing the pressure equalizing cap, and is favorable for the smooth development of partial discharge tests.
Description
Technical Field
The utility model relates to a voltage equalizing cap for a plug-in type transformer partial discharge test, which is mainly used for 110kV and above power transformer partial discharge tests.
Background
The partial discharge test of the transformer is an important means for checking whether the internal insulation of the transformer is aged or deteriorated, and when the partial discharge test is carried out on the transformer, a voltage equalizing device is needed to be additionally arranged on the high-voltage fingered citron and the low-voltage fingered citron of the transformer so as not to influence the partial discharge measurement result of the transformer due to electric field distortion during the test.
At present, the voltage equalizing device for the partial discharge test of the transformer mainly comprises a voltage equalizing cap and a voltage equalizing ring, and the voltage equalizing cap is used at a higher frequency. The prior pressure equalizing cap structure mainly comprises a pressure equalizing cap shell and a fingered citron connecting wire, and before the pressure equalizing cap is buckled on a transformer sleeve, the fingered citron connecting wire and the sleeve fingered citron are connected together to ensure reliable contact between the pressure equalizing cap and the transformer fingered citron. The transformer equalizing cap generally needs to be installed by a lifting car or a crane, the installation difficulty is relatively high, a fingered citron connecting wire is easy to forget, and the contact reliability of the equalizing cap and the transformer fingered citron is poor. Meanwhile, the transformer bushing with the voltage class of 110kV and above generally has a certain inclination angle, and the stability of the voltage equalizing cap is relatively poor.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, and provides the voltage-equalizing cap for the partial discharge test of the plug-in transformer with reasonable structural design, which solves the problems of poor connection reliability and poor stability of the voltage-equalizing cap for the partial discharge of the transformer in the prior art.
The utility model solves the problems by adopting the following technical scheme: the utility model provides a plug-in transformer is voltage-sharing cap for partial discharge test, characterized by, including damping spring, spring clamp plate, spring sleeve, support diaphragm, fingered citron clamping piece, support riser and voltage-sharing cap shell, spring sleeve sets up at the top of voltage-sharing cap shell, damping spring passes through spring clamp plate and impresss spring telescopic inside, spring sleeve sets up on supporting the diaphragm, the quantity of supporting the diaphragm is two, two support diaphragm symmetric distribution is in spring telescopic both sides, two the one end that supports the diaphragm and be close to mutually is connected with the fingered citron clamping piece respectively, fingered citron clamping piece contacts with spring clamp plate, support the riser setting on supporting the diaphragm, it is tangent with spring sleeve's outer wall to support the riser.
Furthermore, the fingered citron clamping pieces are provided with radians, and a gap is reserved between the two fingered citron clamping pieces.
Further, the pressure equalizing cap shell is made of aluminum.
Compared with the prior art, the utility model has the following advantages and effects: the plug-in structure is adopted, so that the sleeve fingered citron can meet the stability of the voltage equalizing cap and the reliable contact with the fingered citron when the transformer is subjected to partial discharge test when the metal clamping piece is inserted; the sleeve spring compression damping structure is adopted, so that the hard injury of the pressure equalizing cap and the fingered citron can be avoided, and meanwhile, the reliable contact between the pressure equalizing cap and the sleeve fingered citron can be further ensured; the operation is simple, the contact is reliable, and the lead wire is not required to be connected with the fingered citron.
Drawings
FIG. 1 is a schematic front view of the pressure equalizing cap according to the present utility model.
FIG. 2 is a schematic top view of the pressure equalizing cap of the present utility model.
FIG. 3 is a schematic left-hand view of the pressure equalizing cap of the present utility model.
In the figure: damping spring 1, spring clamp plate 2, spring sleeve 3, support diaphragm 4, fingered citron clamping piece 5, support riser 6, voltage-sharing cap shell 7.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
As shown in figures 1-3, the voltage equalizing cap for the partial discharge test of the plug-in transformer comprises a damping spring 1, a spring pressing plate 2, a spring sleeve 3, a supporting transverse plate 4, a fingered citron clamping piece 5, a supporting vertical plate 6 and a voltage equalizing cap shell 7.
The diameter of the damping spring 1 is 200mm, and the damping coefficient is selected according to the weight of the pressure equalizing cap; the diameter of the spring pressing plate 2 is 200mm, and the thickness is 5mm; the spring sleeve 3 has an inner diameter of 200mm, an outer diameter of 210mm and a height of 150mm. The damping spring 1, the spring pressing plate 2 and the spring sleeve 3 form a spring damping structure, and the whole spring damping structure is conducted and is arranged at the top of the pressure equalizing cap shell 7.
The spring sleeve 3 sets up on supporting diaphragm 4, and the quantity of supporting diaphragm 4 is two, and the fingered citron clamping piece 5 is connected to the one end that two supporting diaphragms 4 are close to, and support riser 6 circumscribes in the spring sleeve 3.
The thickness of the supporting vertical plate 6 is 5mm, the width is 210mm, and the height is 150mm, so that the supporting effect is achieved.
The thickness of the supporting transverse plate 4 is 5mm, the width is 210mm, and the length is adjusted according to actual conditions, so that the supporting effect is achieved.
The fingered citron clamping pieces 5 have a thickness of 3mm and a length of 210mm, are bent inwards by phi 30mm, and the distance between the two fingered citron clamping pieces 5 is 10mm.
The pressure equalizing cap shell 7 is made of aluminum.
When the voltage-equalizing cap is used for the partial discharge test of the transformer, the voltage-equalizing cap is clamped by the two fingered citron clamping pieces 5, the voltage-equalizing cap shell 7 descends, and the voltage-equalizing cap contacts with the spring damping structure, so that the voltage-equalizing cap and the voltage-equalizing cap can be stably and reliably contacted.
What is not described in detail in this specification is all that is known to those skilled in the art.
Furthermore, the foregoing description of the utility model is provided by way of example only. All equivalent changes in construction, features and principles of the utility model according to the inventive concept are intended to be encompassed by the scope of the utility model. Those skilled in the art may make various modifications, additions and substitutions to the described embodiments without departing from the scope of the utility model as defined in the accompanying claims.
Claims (3)
1. The utility model provides a plug transformer is voltage-sharing cap for partial discharge test, characterized by, including damping spring (1), spring clamp plate (2), spring sleeve (3), support diaphragm (4), fingered citron clamping piece (5), support riser (6) and voltage-sharing cap shell (7), spring sleeve (3) set up the top at voltage-sharing cap shell (7), damping spring (1) are pressed in the inside of spring sleeve (3) through spring clamp plate (2), spring sleeve (3) set up on supporting diaphragm (4), the quantity of supporting diaphragm (4) is two, two support diaphragm (4) symmetric distribution is in the both sides of spring sleeve (3), two the one end that supports diaphragm (4) are close to is connected with fingered citron clamping piece (5) respectively, fingered citron clamping piece (5) and spring clamp plate (2) contact, support riser (6) set up on supporting diaphragm (4), support riser (6) are tangent with the outer wall of spring sleeve (3).
2. The equalizing cap for partial discharge test of plug-in type transformer according to claim 1, wherein the fingered citron clamping pieces (5) have radian, and a gap is formed between the two fingered citron clamping pieces (5).
3. The voltage equalizing cap for partial discharge test of plug-in transformer according to claim 1, wherein the material of the voltage equalizing cap outer shell (7) is aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323042669.0U CN221078738U (en) | 2023-11-10 | 2023-11-10 | Voltage equalizing cap for plug-in transformer partial discharge test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323042669.0U CN221078738U (en) | 2023-11-10 | 2023-11-10 | Voltage equalizing cap for plug-in transformer partial discharge test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221078738U true CN221078738U (en) | 2024-06-04 |
Family
ID=91253352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323042669.0U Active CN221078738U (en) | 2023-11-10 | 2023-11-10 | Voltage equalizing cap for plug-in transformer partial discharge test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221078738U (en) |
-
2023
- 2023-11-10 CN CN202323042669.0U patent/CN221078738U/en active Active
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