CN210015774U - Transformer clamp shielding structure - Google Patents
Transformer clamp shielding structure Download PDFInfo
- Publication number
- CN210015774U CN210015774U CN201920786406.5U CN201920786406U CN210015774U CN 210015774 U CN210015774 U CN 210015774U CN 201920786406 U CN201920786406 U CN 201920786406U CN 210015774 U CN210015774 U CN 210015774U
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- China
- Prior art keywords
- transformer
- shielding plate
- metal shielding
- insulating
- clamping piece
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- Expired - Fee Related
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 95
- 239000002184 metal Substances 0.000 claims abstract description 95
- 239000000123 paper Substances 0.000 claims description 21
- 239000011087 paperboard Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011111 cardboard Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- Regulation Of General Use Transformers (AREA)
Abstract
The utility model discloses a shielding structure of a transformer clamp, which comprises a transformer clamp, wherein the transformer clamp is connected with a transformer shell; a drawstring support plate is arranged on the transformer clamp, and a drawstring is fixed on the drawstring support plate; the bottom of the transformer bushing is provided with a transformer bushing voltage-sharing ball which penetrates through the transformer; a certain distance is arranged between the transformer clamp and the voltage-sharing ball; the metal shielding plate is detachably connected with the transformer clamping piece, and the metal shielding plate is connected with the transformer clamping piece through a bolt; the insulating angle ring penetrates through the metal shielding plate; one bolt directly penetrates through the metal shielding plate to be connected with the transformer clamping piece, and the other bolts penetrate through the insulating angle ring to be connected with the transformer clamping piece; the insulating angle ring is arranged on a bolt cylinder between the metal shielding plate and the transformer clamping piece; and an insulating washer is arranged between the metal nut of the bolt and the metal shielding plate on the opposite side of the insulating angle ring. The utility model discloses can reduce the distance of transformer bushing voltage-sharing ball and transformer folder, it is with low costs.
Description
Technical Field
The utility model relates to an electric power industry, in particular to shielding of oil-immersed power transformer iron core folder specifically is a transformer folder shielding structure.
Background
As a transformer manufacturing enterprise, the company finds that a voltage-sharing ball of a sleeve of an ultra-high voltage transformer is often required to be arranged near a clamping piece of the transformer in the processes of product design, manufacture and operation;
when transformer bushing voltage-sharing balls are arranged near the clamping pieces, the transformer bushing voltage-sharing balls are expected to be close to the transformer clamping pieces for saving cost.
Secondly, iron parts for self use or lead wires are welded on the transformer clamping piece; the parts are all sharp corners, even if the parts are inverted, the parts cannot be inverted into too large arcs due to the own reasons, so that the electrode shapes of the parts are not good, the defects of low-voltage products cannot be influenced, but the extra-high voltage products are extremely high in voltage, and the distance is increased to ensure that the transformer bushing does not discharge electricity to the parts with extremely poor electrode shapes. However, the cost of the transformer is increased due to the excessive distance, so that the distance between the transformer bushing and the transformer clamping piece is reduced under the condition that the transformer bushing does not discharge to the transformer clamping piece.
Disclosure of Invention
Utility model purpose: the utility model aims at solving the not enough among the prior art, provide a transformer folder shielding structure, can reduce the distance of transformer bushing voltage-sharing ball and transformer folder, can guarantee simultaneously that the transformer bushing does not discharge to the transformer folder.
The technical scheme is as follows: the utility model relates to a shielding structure of a transformer clamping piece, which comprises a transformer clamping piece, wherein the transformer clamping piece is connected with a transformer shell; a drawstring support plate is arranged on the transformer clamp, and a drawstring is fixed on the drawstring support plate;
the bottom of the transformer bushing is provided with a transformer bushing voltage-sharing ball which penetrates through the transformer; a certain distance is arranged between the transformer clamp and the voltage-sharing ball;
the metal shielding plate is detachably connected with the transformer clamping piece, and the metal shielding plate is connected with the transformer clamping piece through a bolt;
the insulating angle ring penetrates through the metal shielding plate; one bolt directly penetrates through the metal shielding plate to be connected with the transformer clamping piece, and the other bolts penetrate through the insulating angle ring to be connected with the transformer clamping piece; the insulating angle ring is arranged on a bolt cylinder between the metal shielding plate and the transformer clamping piece; and an insulating washer is arranged between the metal nut of the bolt and the metal shielding plate on the opposite side of the insulating angle ring.
The utility model discloses a further improvement lies in, both ends are the curved arc form about the metal shield board, and two about the metal shield board single curved arc sets up towards the transformer folder.
The utility model discloses a further improvement lies in, the metal shield board is aluminum plate.
The utility model discloses a further improvement lies in, the bolt is four, and the cover has insulating angle ring on the three bolt.
The utility model discloses a further improvement lies in, and insulating angle ring is angle ring paper tube, and insulating angle ring includes the paper tube main part, consolidates the paper circle, and paper tube main part, consolidates the paper circle structure as an organic whole, and the consolidates the paper circle and locates and be close to metal shield board side.
The utility model discloses a further improvement lies in, the bolt mounting is in metal shield's both sides.
The utility model discloses a further improvement lies in, and the thickness of insulating cardboard is 1 mm.
Compared with the prior art, the shielding structure of the clamping piece of the transformer provided by the invention at least realizes the following beneficial effects:
1. the insulating paper board is fixed on the outer surface of the metal shielding plate through the insulating bolt, so that the electric strength of the surface of the metal shielding plate is improved.
2. The metal shielding plate is connected with the transformer clamp through the drill wire and the metal bolt, through holes are formed in the metal shielding plate at other fixing points, the metal bolt and the metal shielding plate are insulated through the insulating angle ring and the insulating washer, the metal shielding plate and the transformer clamp are grounded at one point, the phenomenon that induced charges of the metal shielding plate form circulation through a plurality of grounding points to damage the transformer is avoided, and the pull belt support plate and the pull belt can be effectively protected.
3. The upper end and the lower end of the metal shielding plate are bent to form the protective cover, the outer surfaces of the transformer clamp and the part with the poor electrode are protected to form a regular electrode with a large arc and a plane, the distance from the transformer sleeve pressure equalizing ball to the clamp is greatly reduced, the part with the poor transformer clamp and the part with the poor electrode can be protected, safety and reliability are high, and the purpose of saving cost is achieved.
4. The aluminum plate is used as the metal shielding layer, so that the cost is further saved while the insulating effect is achieved.
5. The bolts are arranged on two sides of the metal shielding plate, so that the metal shielding plate can be prevented from falling off, and the reliability is high.
Of course, it is not specifically necessary for any one product that implements the invention to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic view of a transformer clip shielding apparatus installed in a transformer;
FIG. 2 is a side view of the transformer clip shielding apparatus installed in a transformer;
FIG. 3 is a schematic structural diagram of a metal shielding plate;
FIG. 4 is a schematic structural view of an insulating angle ring and an insulating washer;
1-a transformer clamp; 2-transformer bushing; 3-voltage-sharing ball of transformer bushing; 4-a metallic shielding plate; 5-bolt; 6-insulating angle rings; 601-paper tube body; 602-reinforcing paper ring; 7-a drawstring support plate; 8-a drawstring.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, 3 and 4, a transformer clip shielding structure includes a transformer clip 1, wherein the transformer clip 1 is connected to a transformer housing; a drawstring support plate 7 is arranged on the transformer clamp 1, and a drawstring 8 is fixed on the drawstring support plate 7;
the transformer bushing 2 is provided with a transformer bushing voltage-sharing ball 3 at the bottom, and the voltage-sharing ball 3 penetrates through the transformer; a certain distance is arranged between the transformer clamp 1 and the voltage-equalizing ball 3;
a metal shielding plate 4 is detachably connected with the transformer clamp 1, and the metal shielding plate 4 is connected with the transformer clamp 1 through a bolt;
an insulating angle ring 6 penetrating the metal shield plate 4; one bolt 5 directly penetrates through the metal shielding plate 4 to be connected with the transformer clamp 1, and the other bolts 5 penetrate through the insulating angle ring 6 to be connected with the transformer clamp 1; the insulating angle ring 6 is arranged on a bolt 5 column body between the metal shielding plate 4 and the transformer clamping piece 1; an insulating washer is arranged between the metal nut of the bolt 5 and the metal shielding plate 4 on the opposite side of the insulating angle ring 6;
and an insulating paperboard is arranged on the surface of the metal shielding plate 4 far away from the side of the transformer clamp 1. Because the metal is covered on the insulating part and has higher electric strength than the single metal surface, in order to improve the electric strength of the surface of the metal shielding plate 4, the surface of the metal shielding plate 4 is covered with the insulating paperboard, so that the distance between the voltage-sharing ball at the bottom of the transformer bushing 2 and the transformer clamp 1 is ensured, the uniformity of charge distribution is ensured, and the electric strength of the surface of the metal shielding plate 4 is also greatly improved.
Based on the above embodiment, as shown in fig. 2, the insulating paper board is first fixed on the metal shielding plate 4 by the insulating bolt, and then the metal shielding plate 4 is fixed on the transformer clamp 1. A screw hole is drilled in the mounting plate on the metallic shielding plate 4 to form a shield → the metallic bolt 5 → a screw → the transformer clip 1 → a ground when the metallic shielding plate 4 is fixed by the metallic bolt. Through holes are punched on the mounting plate of the metal shielding plate 4 for other fixing points, the insulating angle ring 6 is fixed between the metal shielding plate 4 and the transformer clamp 1 corresponding to the through holes, an insulating washer is placed on the other side, and the bolt 5 penetrates through the insulating washer and the insulating angle ring 6 and then is connected with the transformer clamp 1, so that the fixing point corresponding to the bolt 5 in the insulating angle ring 6 is ensured to be insulated from the transformer clamp 1. Because the transformer bushing 2 is current-carrying, the transformer bushing voltage-sharing ball 3 will induce charges on the metal shielding plate 4, and if all the fixed points are grounded, the charges will be unevenly distributed, and a circulating current will be formed between the grounded points. The metal shielding plate 4 and the transformer clamping piece 1 are grounded at one point, and the phenomenon that induced charges of the metal shielding plate 4 form circulation currents through a plurality of grounding points to damage a transformer is avoided.
To further explain the present embodiment, it should be noted that the upper and lower ends of the metal shielding plate 4 are curved, the upper and lower curved arcs of the metal shielding plate 4 are disposed toward the transformer clamp 1, and the mounting plate is disposed on the metal shielding plate 4 between the curved ends for mounting the bolt 5. In the embodiment, the upper end and the lower end of the metal shielding plate 4 are bent to form the protective covers, the drawstring supporting plate 7 on the transformer clamp 1 and the drawstring 8 on the drawstring supporting plate 7 are protected, a regular electrode with a large arc and a plane is protected outside the transformer clamp 1 and parts with bad electrodes, an insulating layer is coated outside the electrode, the electric strength of the surface of the metal shielding plate 4 is improved, and the distance from the transformer bushing voltage-sharing ball 3 to the clamp is greatly reduced, so that the purpose of saving cost is achieved.
To further explain the present embodiment, it should be noted that the metal shielding plate 4 is an aluminum plate. In the embodiment, the aluminum plate is used as the metal shielding layer, so that the material is easy to obtain and the cost is low.
For further explanation of the present embodiment, it should be noted that the number of the bolts 5 is four, and the insulating angle ring 6 is sleeved on three bolts 5. In this embodiment, the transformer clamp 1 and the metal shielding plate 4 are connected by the bolts 5, which is highly reliable.
In order to further explain the present embodiment, it should be noted that the insulating angle ring 6 is an angle ring paper tube, the insulating angle ring 6 includes a paper tube main body 601 and a reinforced paper ring 602, the paper tube main body 601 and the reinforced paper ring 602 are an integral structure, and the reinforced paper ring 602 is disposed on the side close to the metal shielding plate 4. In this embodiment, the insulating angle ring 6 is set to be sleeve-shaped, and the reinforcing paper ring 602 is disposed on the side close to the metal shielding plate 4, so that the whole structure is firmer, and the reliability of the whole structure is enhanced.
To further explain the present embodiment, it should be noted that the bolts 5 are installed on both sides of the metal shielding plate 4. In this embodiment, the metal shielding plate 4 is mounted on both sides, so that the drawstring support plate 7 and the drawstring 8 on the drawstring support plate 7 can be avoided, the mounting reliability is high, and the metal shielding plate 4 can be prevented from falling off.
To further explain the present embodiment, it should be noted that the thickness of the insulating paperboard is 1 mm. In this embodiment, the insulating paper board with a thickness of 1mm is used, which is low in cost and has the effect of improving the electric strength of the surface of the metal shielding plate 4.
According to the embodiment, the shielding structure of the clamping piece of the transformer provided by the invention at least has the following beneficial effects:
1. the insulating paper board is fixed on the outer surface of the metal shielding plate 4 through the insulating bolt, so that the electric strength of the surface of the metal shielding plate 4 is improved.
2. The metal shielding plate 4 is connected with the transformer clamp 1 through the metal bolt 5 by drilling wires on the metal shielding plate 4, through holes are formed in the metal shielding plate 4 at other fixed points, the metal bolt 5 and the metal shielding plate 4 are insulated by the insulating angle ring 6 and the insulating washer, so that the metal shielding plate 4 and the transformer clamp 1 are grounded at one point, induced charges of the metal shielding plate 4 are prevented from forming circulation through a plurality of grounding points to damage a transformer, and the pull belt support plate 7 and the pull belt 8 can be effectively protected.
3. The upper end and the lower end of the metal shielding plate 4 are bent to form the protective covers, the outer surfaces of the transformer clamp 1 and parts with poor electrodes are protected to form regular electrodes with large circular arcs and planes, the distance from the transformer sleeve pressure equalizing ball 3 to the clamp is greatly reduced, the parts with poor electrodes and the transformer clamp 1 can be protected, safety and reliability are high, and the purpose of saving cost is achieved.
4. The aluminum plate is used as the metal shielding layer, so that the cost is further saved while the insulating effect is achieved.
5. The bolts 5 are installed on two sides of the metal shielding plate 4, so that the metal shielding plate 4 can be prevented from falling off, and the reliability is high.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. The utility model provides a transformer folder shielding structure which characterized in that: the transformer clamping device comprises a transformer clamping piece (1), wherein the transformer clamping piece (1) is connected with a transformer shell; a drawstring support plate (7) is arranged on the transformer clamp (1), and a drawstring (8) is fixed on the drawstring support plate (7);
the transformer bushing (2) is provided with a transformer bushing voltage-sharing ball (3) at the bottom, and the voltage-sharing ball (3) penetrates through the transformer; a certain distance is arranged between the transformer clamping piece (1) and the voltage-sharing ball (3);
the metal shielding plate (4) is detachably connected with the transformer clamping piece (1), and the metal shielding plate (4) is connected with the transformer clamping piece (1) through a bolt;
an insulating angle ring (6) penetrating the metal shielding plate (4); one of the bolts (5) directly penetrates through the metal shielding plate (4) to be connected with the transformer clamp (1), and the other bolts (5) penetrate through the insulating angle ring (6) to be connected with the transformer clamp (1); the insulating angle ring (6) is arranged on a bolt (5) column body between the metal shielding plate (4) and the transformer clamping piece (1); an insulating washer is arranged between the metal nut of the bolt (5) and the metal shielding plate (4) on the opposite side of the insulating angle ring (6);
and an insulating paperboard is arranged on the surface of the metal shielding plate (4) far away from the side of the transformer clamping piece (1).
2. A transformer clip shielding structure as set forth in claim 1, wherein: the upper end and the lower end of the metal shielding plate (4) are in a bent arc shape, and the bent arcs of the upper metal shielding plate and the lower metal shielding plate (4) are arranged towards the transformer clamping piece (1).
3. A transformer clip shielding structure as set forth in claim 1, wherein: the metal shielding plate (4) is an aluminum plate.
4. A transformer clip shielding structure as set forth in claim 1, wherein: the number of the bolts (5) is four, and the number of the bolts (5) is three, and the insulating angle rings (6) are sleeved on the bolts (5).
5. A transformer clip shielding structure as set forth in claim 1, wherein: insulating angle ring (6) are angle ring paper tube, insulating angle ring (6) include paper tube main part (601), reinforcement paper circle (602), paper tube main part (601), reinforcement paper circle (602) structure as an organic whole, reinforcement paper circle (602) are located and are close to metal shield (4) side.
6. A transformer clip shielding structure as set forth in claim 1, wherein: the bolts (5) are arranged on two sides of the metal shielding plate (4).
7. A transformer clip shielding structure as set forth in claim 1, wherein: the thickness of the insulating paperboard is 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786406.5U CN210015774U (en) | 2019-05-28 | 2019-05-28 | Transformer clamp shielding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920786406.5U CN210015774U (en) | 2019-05-28 | 2019-05-28 | Transformer clamp shielding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210015774U true CN210015774U (en) | 2020-02-04 |
Family
ID=69318089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920786406.5U Expired - Fee Related CN210015774U (en) | 2019-05-28 | 2019-05-28 | Transformer clamp shielding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210015774U (en) |
-
2019
- 2019-05-28 CN CN201920786406.5U patent/CN210015774U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200204 |