CN203799839U - Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof - Google Patents
Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof Download PDFInfo
- Publication number
- CN203799839U CN203799839U CN201420200950.4U CN201420200950U CN203799839U CN 203799839 U CN203799839 U CN 203799839U CN 201420200950 U CN201420200950 U CN 201420200950U CN 203799839 U CN203799839 U CN 203799839U
- Authority
- CN
- China
- Prior art keywords
- shielding structure
- transformer
- electric shielding
- lead
- electrical shielding
- 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
Links
- 238000007599 discharging Methods 0.000 title abstract 2
- 239000002828 fuel tank Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 210000001624 hip Anatomy 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 abstract description 22
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005292 diamagnetic effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
An electrical shielding structure that has strong shielding ability and improves the shielding lead magnetic leakage ability of an alternating-current transformer, and an oil tank and a line discharging device of the alternating-current transformer by utilizing the electrical shielding structure are provided in the utility model, Wherein the electrical shielding structure is of a continuous corrugation shape and is fixed on an alternating-current transformer shielded device; the electrical shielding structure and a lead row of the alternating-current transformer are located at the same side of the alternating-current transformer shielded device; the corrugation repetition direction in the electrical shielding structure is vertical to the current conduction direction in the lead row; and the electrical shielding structure is extensionally arranged towards two ends along the current conduction direction in the lead row. According to the utility model, the electrical shielding structure is set as the continuous corrugation shape, so an adequate intersection angle is formed between the electrical shielding structure and the lead magnetic leakage direction; and the diamagnetic current is generated adequately in the electrical shielding structure, so the overheat caused by that the lead magnetic leakage passes through the electrical shielding structure and then enters a metal structure in the alternating-current transformer shielded device is prevented, and the magnetic leakage consumption is greatly decreased.
Description
Technical field
The utility model belongs to AC transformer technical field, is specifically related to a kind of fuel tank and outgoing line device and electric shielding structure thereof of AC transformer.
Background technology
Because the large electric current flowing through in the lead-in wire of AC transformer can produce a large amount of magnetic leakage fluxes, especially more obvious in high-power transformer, if this leakage field is not limited and can be produced larger dispersion loss in the hardware such as oil tank of transformer, outgoing line device, thereby make the hardware such as oil tank of transformer, outgoing line device occur overheated phenomenon.In hardware, occur overheated phenomenon, fuel tank, outgoing line device inwall laying copper or the aluminium sheet of the transformer lead process of being everlasting, as electric screen, produce loss to avoid leakage field to enter in oil tank of transformer, outgoing line device; Wherein outgoing line device is output cylinder or wire box.
Existing electric screen is slab construction, be layed in the inner wall surface of oil tank of transformer and outgoing line device, and current direction in transformer lead is parallel with electric screen, the leakage field direction that wire current is produced is basic parallel with electric screen surface, this magnetic field cannot produce anti-magnetoelectricity stream in electric screen, electric screen cannot produce the magnetic field offseting with leakage field, and then leakage field is entered in the hardware such as fuel tank or outgoing line device through electric screen with less corner cut, thereby produce loss and heating, as depicted in figs. 1 and 2.The electric screen of existing slab construction, due to it, that leakage field component as shown in Figure 2 occurs is minimum, so specifically as shown in Figure 1, can not effectively shield with less corner cut through its surperficial leakage field.
Utility model content
For the problems of the prior art, the utility model provides a kind of screening ability strong, improves fuel tank and outgoing line device and the electric shielding structure thereof of the AC transformer of Transformer shielding lead-in wire leakage field ability.
The utility model is to be achieved through the following technical solutions:
An electric shielding structure for AC transformer, it is continuous wave pattern shape and is fixedly installed on AC transformer conductively-closed device; The lead of electric shielding structure and AC transformer is positioned at the homonymy of AC transformer conductively-closed device; Ripple repetition direction in electric shielding structure is vertical with direction of current conduction in lead, and electric shielding structure along with lead in direction of current conduction to two ends extend arrange.
Preferably, the ripple in electric shielding structure adopts isosceles trapezoid ripple, and two waists of isosceles trapezoid ripple and conductively-closed apparatus surface are 15 °～45 ° angles, are highly 15mm～30mm.
Preferably, electric shielding structure is fixedly connected with AC transformer conductively-closed device by welding.
Preferably, electric shielding structure adopts copper or aluminium to make.
Further, transformer conductively-closed device is AC transformer fuel tank or output cylinder or wire box.
The utility model also provides a kind of fuel tank of AC transformer, and the electric shielding structure as described in any one in former scheme and preferred scheme is set on the inwall of described fuel tank.
The utility model also provides a kind of outgoing line device of AC transformer, and the electric shielding structure as described in any one in former scheme and above preferred scheme is set on the inwall of described outgoing line device.
Further, to adopt cross section be the wire box that circular output cylinder or cross section are rectangle to outgoing line device.
Compared with prior art, the utlity model has following useful technique effect:
The utility model is set to continuous corrugated by electric shielding structure, thereby the leakage field direction that makes to go between in electric shielding structure and lead can form enough angles, and then in electric shielding structure, produce enough anti-magnetoelectricity stream, stop lead-in wire leakage field through electric shielding structure enter in the metal structure in AC transformer conductively-closed device, cause overheated, significantly reduced the dispersion loss of metalloid structural member in AC transformer conductively-closed device, effectively the leakage field on electric shielding structure surface is passed in shielding with less corner cut.
Further, by the restriction to bellows-shaped, thereby can ensure in electric shielding structure different angles leakage field receptor area, ensure to produce enough anti-magnetoelectricity stream, can also, for the size of different wire currents, quantitatively regulate easily.
Further, realize and fixing by welding, can not take too much installing space, and ensure the stability connecting; Utilize copper or aluminium to make, avoided self reduction to anti-magnetoelectricity stream.
Further, by electric shielding structure being arranged on targetedly on concrete AC transformer conductively-closed device, thereby realized adequately protecting to various piece.
Brief description of the drawings
Fig. 1 is the schematic diagram of arranging of AC transformer conductively-closed device and lead-in wire in prior art.
Fig. 2 is the principle schematic that electric shielding structure suppresses magnetic field.
Fig. 3 is the structural representation described in the utility model example 1, and wherein, 3a is front view, and 3b is axis side view.
Fig. 4 is the structural representation described in the utility model example 2, and wherein, 4a is front view, and 4b is axis side view.
Fig. 5 is the structural representation described in the utility model example 3, and wherein, 5a is front view, and 5b is axis side view.
In figure: the 1 conductively-closed device that is AC transformer, 2 is electric shielding structure, and 3 is lead, and 4 is lead magnetic field, and 5 is electric screen induced current, and 6 is electric screen magnetic field, and 7 is outgoing line device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, in prior art, in the time that the magnetic line of force in lead magnetic field 4 passes electric shielding structure 2 with less corner cut, its component is in vertical direction minimum, therefore cannot effectively produce anti-magnetoelectricity stream therein, and then generation electric screen magnetic field 6 is as shown in Figure 2 to the 4 realization shieldings of lead magnetic field, therefore cannot protect AC transformer conductively-closed device 1; Wherein, the magnetic field of lead magnetic field 4 for occurring that in row 3, electric current produces, electric screen induced current 5 is by the induced current that occurs that row magnetic field 4 forms in electric shielding structure 2, the magnetic field that electric screen magnetic field 6 produces for electric screen induced current 5.
The electric shielding structure of a kind of AC transformer of the utility model, is continuous wave pattern shape and is fixedly installed on AC transformer conductively-closed device 1; The lead 3 of electric shielding structure 2 and AC transformer is positioned at the homonymy of AC transformer conductively-closed device 1; Ripple repetition direction in electric shielding structure 2 is vertical with direction of current conduction in lead 3, and electric shielding structure 2 along with lead 3 in direction of current conduction extend and arrange to two ends.Thereby can ensure that electric shielding structure 2 and the leakage field of lead 3 have the contact-making surface of multiple angles, make it can produce enough anti-induced field currents, effectively suppress lead 3 leakage fields and enter in the hardware in conductively-closed device.Preferably, the ripple in electric shielding structure adopts isosceles trapezoid ripple, and two waists of isosceles trapezoid ripple and conductively-closed apparatus surface are 15 °～45 ° angles, are highly 15mm～30mm.Electric shielding structure is fixedly connected with AC transformer conductively-closed device by welding.Electric shielding structure adopts copper or aluminium to make.Wherein transformer conductively-closed device is AC transformer fuel tank or output cylinder or wire box.Concrete is as described below.
Example 1
As shown in Figure 3, for a kind of electric shielding structure of AC transformer, according to the demand to transformer lead and electric screen magnetic field result of calculation, determine isosceles trapezoid ripple and angle and the sizes conductively-closed device 2 surfaces of most preferred electric shielding structure 2, the present embodiment is taking conductively-closed device 2 as AC transformer mailbox is as example, electric shielding structure 2 is welded on the inwall of fuel tank, make the bearing of trend of ripple plane of electric shielding structure 2 consistent with the direction of current conduction flowing through in lead 3, the repetition direction of ripple is vertical with direction of current conduction.
Example 2
As shown in Figure 4, for a kind of outgoing line device of AC transformer, according to the demand to transformer lead and electric screen magnetic field result of calculation, determine isosceles trapezoid ripple and angle and the sizes outgoing line device 7 surfaces of most preferred electric shielding structure 2, the present embodiment is taking outgoing line device 7 as cross section as the wire box of rectangle is example, electric shielding structure 2 is welded on the inwall of wire box, make the bearing of trend of ripple plane of electric shielding structure 2 consistent with the direction of current conduction flowing through in lead 3, the repetition direction of ripple is vertical with direction of current conduction; The sense of current that wherein two leads 3 flow through can be identical also can be contrary.
Example 3
As shown in Figure 5, for a kind of outgoing line device of AC transformer, according to the demand to transformer lead and electric screen magnetic field result of calculation, determine isosceles trapezoid ripple and angle and the sizes outgoing line device 7 surfaces of most preferred electric shielding structure 2, the size of angle is determined by the size of current in lead 3, electric current greatly corresponding angle is large, and the little corresponding angle of electric current is little; The present embodiment is taking outgoing line device 7 as cross section as circular wire box is example, electric shielding structure 2 is welded on the inwall of wire box, make the bearing of trend of ripple plane of electric shielding structure 2 consistent with the direction of current conduction flowing through in lead 3, the repetition direction of ripple is vertical with direction of current conduction; The sense of current that wherein two leads 3 flow through can be identical also can be contrary.
Claims (8)
1. an electric shielding structure for AC transformer, is characterized in that, described electric shielding structure is continuous wave pattern shape and is fixedly installed on AC transformer conductively-closed device; The lead of electric shielding structure and AC transformer is positioned at the homonymy of AC transformer conductively-closed device; Ripple repetition direction in electric shielding structure is vertical with direction of current conduction in lead, and electric shielding structure along with lead in direction of current conduction to two ends extend arrange.
2. the electric shielding structure of a kind of AC transformer according to claim 1, it is characterized in that, ripple in described electric shielding structure adopts isosceles trapezoid ripple, and two waists of isosceles trapezoid ripple and conductively-closed apparatus surface are 15 °～45 ° angles, are highly 15mm～30mm.
3. the electric shielding structure of a kind of AC transformer according to claim 1 and 2, is characterized in that, described electric shielding structure is fixedly connected with AC transformer conductively-closed device by welding.
4. the electric shielding structure of a kind of AC transformer according to claim 1 and 2, is characterized in that, described electric shielding structure adopts copper or aluminium to make.
5. the electric shielding structure of a kind of AC transformer according to claim 1, is characterized in that, described transformer conductively-closed device is AC transformer fuel tank or output cylinder or wire box.
6. a fuel tank for AC transformer, is characterized in that, the electric shielding structure as described in any one in claim 1-4 is set on the inwall of described fuel tank.
7. an outgoing line device for AC transformer, is characterized in that, the electric shielding structure as described in any one in claim 1-4 is set on the inwall of described outgoing line device.
8. the outgoing line device of a kind of AC transformer according to claim 7, is characterized in that, it is the wire box that circular output cylinder or cross section are rectangle that described outgoing line device adopts cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200950.4U CN203799839U (en) | 2014-04-23 | 2014-04-23 | Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200950.4U CN203799839U (en) | 2014-04-23 | 2014-04-23 | Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203799839U true CN203799839U (en) | 2014-08-27 |
Family
ID=51382034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200950.4U Expired - Lifetime CN203799839U (en) | 2014-04-23 | 2014-04-23 | Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203799839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110012654A (en) * | 2019-03-18 | 2019-07-12 | 南京工业职业技术学院 | Novel dish shielding finger |
| WO2022051926A1 (en) * | 2020-09-09 | 2022-03-17 | Siemens Gas And Power Gmbh & Co., Kg | Oil tank for converter transformer and converter transformer including same |
-
2014
- 2014-04-23 CN CN201420200950.4U patent/CN203799839U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110012654A (en) * | 2019-03-18 | 2019-07-12 | 南京工业职业技术学院 | Novel dish shielding finger |
| CN110012654B (en) * | 2019-03-18 | 2020-09-25 | 南京工业职业技术学院 | Novel dish-shaped shielding reed |
| WO2022051926A1 (en) * | 2020-09-09 | 2022-03-17 | Siemens Gas And Power Gmbh & Co., Kg | Oil tank for converter transformer and converter transformer including same |
| EP4200884A1 (en) * | 2020-09-09 | 2023-06-28 | Siemens Energy Global GmbH & Co. KG | Oil tank for converter transformer and converter transformer including same |
| EP4200884A4 (en) * | 2020-09-09 | 2024-05-15 | Siemens Energy Global GmbH & Co. KG | Oil tank for converter transformer and converter transformer including same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101087768B1 (en) | Emi cancellation device in power supply and collector device for magnetic induction power transmission | |
| CN204298972U (en) | Generator neutral point wall barricade structure | |
| CN203799839U (en) | Oil tank and line discharging device of alternating-current transformer and electrical shielding structure thereof | |
| CN104319076B (en) | A kind of non-contact transformer | |
| CN204067597U (en) | A kind of Low ESR combination ground connection is dull and stereotyped | |
| CN206849632U (en) | A kind of single-phase transformer fuel tank magnetic leakage shielding structure | |
| CN204269711U (en) | A kind of modularization leakage current sensor | |
| CN102628881A (en) | Electromagnetic shielding shell for power transmission line one-line monitoring device | |
| CN203631283U (en) | Shielding device of oil tank of large transformer | |
| CN210956419U (en) | Outdoor transformer lightning arrester for power engineering | |
| CN203232077U (en) | Special portable support for device for on-line monitoring transformer iron core grounding current | |
| CN104465037B (en) | A kind of oil-immersed power transformer iron core grounding structure | |
| CN206711734U (en) | A kind of shading ring for uniform electric field | |
| CN205542340U (en) | Three -phase magnetic field shielding structure among large -scale SVC | |
| CN105761913A (en) | Electromagnetic shielding structure of GIS electronic mutual inductor | |
| CN105761901A (en) | Magnetic shielding device of transformer oil tank | |
| CN202948825U (en) | Transformer shielding structure | |
| CN201799745U (en) | Small-sized inverter welding machine | |
| CN205881615U (en) | Low pressure enclosed bus be qualified for next round of competitions a magnetic leakage shield assembly and a three -phase transformer | |
| CN204720297U (en) | A kind of transformer framework structure | |
| CN105512463A (en) | Power-distribution workshop busbar power-frequency magnetic field calculating method and system | |
| CN203423029U (en) | Magnetic shielding structure for transformer oil tank | |
| CN203225167U (en) | Magnetic shield for transformers | |
| CN203936564U (en) | For the girder steel apparatus for welding and positioning of advertisement curtain wall | |
| CN207200214U (en) | One kind can fireproof bus duct |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |