CN215731274U - Fixing structure for corner plate magnetic shielding of upper clamping piece of transformer - Google Patents
Fixing structure for corner plate magnetic shielding of upper clamping piece of transformer Download PDFInfo
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- CN215731274U CN215731274U CN202122323294.XU CN202122323294U CN215731274U CN 215731274 U CN215731274 U CN 215731274U CN 202122323294 U CN202122323294 U CN 202122323294U CN 215731274 U CN215731274 U CN 215731274U
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Abstract
The utility model provides a fixing structure for corner plate magnetic shielding of a clamping piece on a transformer, which is characterized in that a corner plate magnetic shielding unit, a shielding plate unit and a pressing block are fixedly pressed on the clamping piece on the transformer, wherein the bottom of a corner plate is provided with a groove, the pressing block is provided with a boss, the corner plate magnetic shielding unit and the shielding plate unit are tightly propped in the groove at the bottom of the corner plate through the boss of the pressing block, and then the corner plate magnetic shielding unit and the shielding plate unit are respectively fixed in the groove at the bottom of the corner plate and the pressing block is fixed in the groove at the bottom of the corner plate through a plurality of screw nuts, so that the corner plate magnetic shielding unit and the shielding plate unit are prevented from sliding in the groove at the bottom of the corner plate, and the problem that the upper corner plate clamping piece cannot be reliably grounded through magnetic shielding is effectively solved.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a fixing structure for corner plate magnetic shielding of a clamping piece on a transformer.
Background
When the leakage flux of the transformer passes through the metal structural member, eddy current loss is generated, and the temperature of the metal structural member is increased. The temperature rise allowable value of the transformer coil leakage flux caused in the metal structural member is fixed, and when the temperature rise value of the web plate of the upper clamping piece exceeds the temperature rise allowable value of the coil leakage flux in the metal structural member, the web plate of the upper clamping piece needs to be provided with magnetic shielding to form a magnetic shunt, so that the leakage flux distribution is improved, and the loss of the metal structural member is reduced. The fixed mode of conventional folder scute magnetic shield of going up leads to the unable reliable ground connection of magnetic shield easily, produces the suspension electric potential for solid medium burns out or carbomorphism on every side, and insulating oil can decompose a large amount of characteristic gas under the effect at suspension electric potential, leads to the oil chromatographic analysis result to exceed standard, and can produce partial discharge when the suspension electric potential is great, needs the fixed knot structure of folder scute magnetic shield on a transformer to effectively solve the problem of the unable reliable ground connection when conventional magnetic shield installation this moment.
SUMMERY OF THE UTILITY MODEL
Aiming at solving a series of problems caused by suspension potential generated by unreliable grounding when the upper clamp angle plate is fixed by magnetic shielding in the prior art, the utility model provides the fixing structure of the upper clamp angle plate magnetic shielding of the transformer, which has simple structure and convenient operation and ensures that the upper clamp angle plate magnetic shielding of the transformer is safer and more reliable to install and use.
The utility model is realized by the following technical scheme:
a fixing structure for corner plate magnetic shielding of an upper clamping piece of a transformer comprises the upper clamping piece of the transformer, a corner plate magnetic shielding unit, a shielding plate unit and a pressing block; the upper clamping piece of the transformer comprises a web plate, a connecting plate and an angle plate, wherein the web plate is vertically and fixedly connected with the angle plate, and the connecting plate is arranged between the web plate and the angle plate and is connected with the web plate and the angle plate; the bottom of the angle plate is provided with a groove; the angle plate magnetic shielding unit and the shielding plate unit are sequentially fixed and embedded in the groove through the screw nuts, the boss is arranged at the top of the pressing block, the boss of the pressing block sequentially penetrates through the angle plate magnetic shielding unit and the shielding plate unit and then is fixedly assembled in the groove at the bottom of the angle plate through the screw nuts, and the angle plate magnetic shielding unit and the shielding plate unit are tightly pressed in the groove.
Preferably, the corner plate magnetic shielding unit comprises a plurality of corner plate magnetic shields, the shielding plate unit comprises a plurality of shielding plates, and the number of the corner plate magnetic shields and the number of the shielding plates are correspondingly arranged.
Furthermore, a plurality of mounting holes are correspondingly formed in the angle plate magnetic shielding plate and the shielding plate, and the screw nuts penetrate through the angle plate inner grooves and sequentially pass through the mounting holes of the angle plate magnetic shielding plate and the shielding plate, so that the angle plate magnetic shielding plate and the angle plate are fixed.
Furthermore, a plurality of counter bores are arranged on the boss of the pressing block, and the counter bores are arranged corresponding to the mounting holes.
Preferably, the angle plate magnetic shield is formed by overlapping a plurality of silicon steel sheets, and the sharp angle of the angle plate magnetic shield is arranged by polishing.
Preferably, the angular plate magnetic shield has a thickness dimensional tolerance of 0-0.5 mm.
Preferably, the area of the inner groove of the angle plate corresponds to the area of the boss of the pressing block.
Preferably, the material of the screw nut is an insulating material.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides a fixing structure for corner plate magnetic shielding of a clamping piece on a transformer, which is characterized in that a corner plate magnetic shielding unit, a shielding plate unit and a pressing block are fixedly pressed on the clamping piece on the transformer, wherein the bottom of a corner plate is provided with a groove, the pressing block is provided with a boss, the corner plate magnetic shielding unit and the shielding plate unit are tightly propped in the groove at the bottom of the corner plate through the boss of the pressing block, and then the corner plate magnetic shielding unit and the shielding plate unit are respectively fixed in the groove at the bottom of the corner plate and the pressing block is fixed in the groove at the bottom of the corner plate through a plurality of screw nuts, so that the corner plate magnetic shielding unit and the shielding plate unit are prevented from sliding in the groove at the bottom of the corner plate, and the problem that the upper corner plate clamping piece cannot be reliably grounded through magnetic shielding is effectively solved.
Further, scute magnetism shielding unit includes a plurality of scutes magnetism shielding, and the shielding board unit includes a plurality of shielding boards, and the quantity of a plurality of scutes magnetism shielding and a plurality of shielding boards corresponds the setting, has improved the shielding effect of scute magnetism shielding.
Furthermore, the corner plate magnetic shield and the shielding plate are correspondingly provided with a plurality of mounting holes, and the screw nuts penetrate through the corner plate inner grooves and sequentially pass through the mounting holes of the corner plate magnetic shield and the shielding plate, so that the corner plate magnetic shield and the corner plate are fixed, and the corner plate magnetic shield is prevented from falling off on the corner plate.
Preferably, the boss of the pressing block is provided with a plurality of counter bores, and the counter bores and the mounting holes are correspondingly arranged, so that the screw and the nut can be conveniently fixed and assembled.
Further, the scute magnetic shield is formed by stacking a plurality of silicon steel sheets, and the sharp corners of the scute magnetic shield are polished to be arranged, so that the scute magnetic shield can be more reliably grounded when the upper clamping piece scute magnetic shield is fixed.
Furthermore, the thickness dimensional tolerance of the angle plate magnetic shield 2 is 0-0.5mm, and the full contact between all silicon steel sheets of the angle plate magnetic shield is ensured.
Furthermore, the area size of the inner groove of the angle plate corresponds to the area size of the boss of the pressing block, so that the angle plate magnetic shielding unit and the shielding plate unit are conveniently pushed tightly in the groove of the angle plate through the boss of the pressing block.
Drawings
FIG. 1 is a schematic view of a fixing structure of an angle plate magnetic shield of a clamping piece on a transformer according to the present invention;
FIG. 2 is a top view of the fixing structure of the corner plate magnetic shield of the upper clamp of the transformer of the present invention.
In the figure: 1-a transformer upper clamp; 2-corner plate magnetic shielding; 3-a shielding plate; 4-briquetting; 5-screw and nut; 11-a web; 12-a connecting plate; 13-corner plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the utility model provides a fixing structure for an upper clamp angle plate magnetic shield of a transformer, which has the advantages of simple structure and convenient operation, and ensures that the upper clamp angle plate magnetic shield of the transformer is safer and more reliable to install and use.
Specifically, the fixing structure for the corner plate magnetic shielding of the upper clamping piece of the transformer comprises an upper clamping piece 1 of the transformer, a corner plate magnetic shielding unit, a shielding plate unit and a pressing block 4; the transformer upper clamping piece 1 comprises a web plate 11, a connecting plate 12 and an angle plate 13, wherein the web plate 11 and the angle plate 13 are vertically and fixedly connected, and the connecting plate 12 is arranged between the web plate 11 and the angle plate 13 and connects the web plate 11 and the angle plate 13; the bottom of the angle plate 13 is provided with a groove; the angle plate magnetic shielding unit and the shielding plate unit are sequentially fixed and embedded in the groove through the screw nuts 5, the boss is arranged at the top of the pressing block 4, the boss of the pressing block 4 sequentially penetrates through the angle plate magnetic shielding unit and the shielding plate unit through the screw nuts 5 and then is fixedly assembled in the groove at the bottom of the angle plate, and the angle plate magnetic shielding 2 and the shielding plate 3 are tightly pushed in the groove.
Specifically, scute magnetic shield unit includes a plurality of scute magnetic shields 2, and the shielding plate unit includes a plurality of shielding plates 3, and a plurality of scute magnetic shields 2 correspond the setting with a plurality of shielding plates 3's quantity, have improved the shielding effect of scute magnetic shield.
Wherein, the corner plate magnetic shield 2 and the shielding plate 3 are correspondingly provided with a plurality of mounting holes, and the screw nut 5 passes through the inner groove of the corner plate 13 and sequentially passes through the mounting holes of the corner plate magnetic shield 2 and the shielding plate 3, so as to fix the corner plate magnetic shield 2 and the corner plate 13.
A plurality of counter bores are formed in the boss of the pressing block 4, and the counter bores and the mounting holes are correspondingly formed, so that the screw and the nut can be conveniently and fixedly assembled.
Specifically, scute magnetic shield 2 forms through the stack of a plurality of silicon steel sheets, and the sharp angle department of scute magnetic shield 2 sets up of polishing, is convenient for make the ground connection that the scute magnetic shield of upper clamp spare is more reliable when fixed.
Specifically, the area size of the inner groove of the angle plate 13 corresponds to the area size of the boss of the pressing block 4, so that the angle plate magnetic shielding unit and the shielding plate unit are tightly supported in the groove of the angle plate through the boss of the pressing block, and oil gaps are effectively avoided.
Specifically, the thickness dimensional tolerance of the angle plate magnetic shield 2 is 0-0.5mm, and the full contact between silicon steel sheets of the angle plate magnetic shield is ensured.
The thickness dimensional tolerance of the angle plate magnetic shield 2 is 0-0.5mm, and the screw nut 5 is made of an insulating material.
Examples
According to the drawings of fig. 1 and 2, the fixing structure of the corner plate magnetic shielding of the upper clamping piece of the transformer comprises an upper clamping piece of the transformer 1, a corner plate magnetic shielding unit, a shielding plate unit and a pressing block 4; the transformer upper clamp 1 comprises a web plate 11, a connecting plate 12 and an angle plate 13, wherein the bottom of the angle plate 13 is provided with a groove; the scute magnetic shielding unit comprises a plurality of scute magnetic shielding 2, the shielding plate unit comprises a plurality of shielding plates 3, the quantity of the scute magnetic shielding 2 and the shielding plates 3 corresponds to the setting, a plurality of mounting holes are correspondingly formed in the scute magnetic shielding 2 and the shielding plates 3, the screw nuts 5 penetrate through the inner grooves of the scute 13 and sequentially pass through the mounting holes of the scute magnetic shielding 2 and the shielding plates 3, and the scute magnetic shielding 2 and the scute 13 are fixed.
Each angle plate magnetic shield 2 and each shielding plate 3 are provided with a plurality of mounting holes, wherein the mounting holes comprise a first mounting hole, a second mounting hole and a third mounting hole; when the corner plate magnetic shielding unit of the clamping piece on the transformer is fixed, the shielding plate unit covers the lower part of the corner plate magnetic shielding unit, the screw nut 5 penetrates through the first mounting hole and the third mounting hole in the corner plate magnetic shielding unit 2, the corner plate magnetic shielding unit 2 is fixed in the inner groove of the corner plate 13, and the screw nut 5 penetrates through the second mounting hole of the pressing block 4 and the second mounting hole of the corner plate magnetic shielding unit 2 to connect the pressing block 4 with the corner plate 13.
In summary, the utility model provides a fixing structure for corner plate magnetic shielding of a clamping piece on a transformer, which is characterized in that a corner plate magnetic shielding unit, a shielding plate unit and a pressing block are fixedly pressed on the clamping piece on the transformer, wherein a groove is arranged at the bottom of a corner plate, a boss is arranged on the pressing block, the corner plate magnetic shielding unit and the shielding plate unit are tightly propped in the groove at the bottom of the corner plate through the boss of the pressing block, and then the corner plate magnetic shielding unit and the shielding plate unit are respectively fixed in the groove at the bottom of the corner plate and the pressing block is fixed in the groove at the bottom of the corner plate through a plurality of screw nuts, so that the corner plate magnetic shielding unit and the shielding plate unit are prevented from sliding in the groove at the bottom of the corner plate, and the problem that the corner plate of the upper clamping piece cannot be reliably grounded is effectively solved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the utility model without departing from the spirit and scope of the utility model, which is to be covered by the claims.
Claims (8)
1. A fixing structure for corner plate magnetic shielding of an upper clamping piece of a transformer is characterized by comprising an upper clamping piece (1) of the transformer, a corner plate magnetic shielding unit, a shielding plate unit and a pressing block (4); the transformer upper clamp (1) comprises a web plate (11), a connecting plate (12) and an angle plate (13), wherein the web plate (11) is vertically and fixedly connected with the angle plate (13), and the connecting plate (12) is arranged between the web plate (11) and the angle plate (13) and is used for connecting the web plate (11) and the angle plate (13); the bottom of the angle plate (13) is provided with a groove; the angle plate magnetic shielding unit and the shielding plate unit are fixedly embedded in the groove through the screw nuts (5), the boss is arranged at the top of the pressing block (4), the boss of the pressing block (4) sequentially penetrates through the angle plate magnetic shielding unit and the shielding plate unit through the screw nuts (5) and then is fixedly assembled in the groove at the bottom of the angle plate, and the angle plate magnetic shielding unit (2) and the shielding plate (3) are tightly supported in the groove.
2. A fixing structure of a clamp angle plate magnetic shield on a transformer as claimed in claim 1, characterized in that the angle plate magnetic shield unit comprises a plurality of angle plate magnetic shields (2), the shielding plate unit comprises a plurality of shielding plates (3), and the number of the angle plate magnetic shields (2) and the number of the shielding plates (3) are correspondingly arranged.
3. The fixing structure of the corner plate magnetic shield of the clamping piece on the transformer as claimed in claim 2, wherein a plurality of mounting holes are correspondingly arranged on the corner plate magnetic shield (2) and the shielding plate (3), and the screw nut (5) passes through the inner groove of the corner plate (13) and passes through the mounting holes of the corner plate magnetic shield (2) and the shielding plate (3) in sequence to fix the corner plate magnetic shield (2) and the corner plate (13).
4. The fixing structure of the magnetic shielding of the corner plate of the clamp on the transformer as claimed in claim 3, wherein the boss of the pressing block (4) is provided with a plurality of counter bores, and the plurality of counter bores are arranged corresponding to the plurality of mounting holes.
5. The fixing structure of the corner plate magnetic shield of the upper clamp of the transformer as claimed in claim 1, wherein the corner plate magnetic shield (2) is formed by stacking a plurality of silicon steel sheets, and the sharp corner of the corner plate magnetic shield (2) is ground.
6. A fixing structure of a clamp angle plate magnetic shield on a transformer according to claim 1, characterized in that the thickness dimensional tolerance of the angle plate magnetic shield (2) is 0-0.5 mm.
7. The fixing structure of a clamp angle plate magnetic shield on a transformer according to claim 1, characterized in that the size of the inner groove area of the angle plate (13) is arranged corresponding to the size of the boss area of the pressing block (4).
8. The fixing structure of the corner plate magnetic shield of the upper clamp of the transformer as claimed in claim 1, wherein the material of the screw nut (5) is an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122323294.XU CN215731274U (en) | 2021-09-24 | 2021-09-24 | Fixing structure for corner plate magnetic shielding of upper clamping piece of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122323294.XU CN215731274U (en) | 2021-09-24 | 2021-09-24 | Fixing structure for corner plate magnetic shielding of upper clamping piece of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215731274U true CN215731274U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122323294.XU Active CN215731274U (en) | 2021-09-24 | 2021-09-24 | Fixing structure for corner plate magnetic shielding of upper clamping piece of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215731274U (en) |
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2021
- 2021-09-24 CN CN202122323294.XU patent/CN215731274U/en active Active
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