CN210859508U - Self-shielding nut for high-voltage transformer - Google Patents
Self-shielding nut for high-voltage transformer Download PDFInfo
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- CN210859508U CN210859508U CN201921915884.8U CN201921915884U CN210859508U CN 210859508 U CN210859508 U CN 210859508U CN 201921915884 U CN201921915884 U CN 201921915884U CN 210859508 U CN210859508 U CN 210859508U
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Abstract
Disclosed is a self-shielding nut for a high-voltage transformer, for use in a self-shielding nut for a high-voltage transformer, the nut body being configured to be threadedly connected to the high-voltage transformer, the nut body being provided with an inner bore; the inner wall surface is arranged in the inner hole and is provided with threads; the outer wall side surface is arranged on the outer side wall of the nut body, and the outer wall side surface is a smooth surface surrounding the nut body.
Description
Technical Field
The utility model relates to a high voltage transformer technical field, especially a self-shielding nut for high voltage transformer.
Background
At present, an iron core and a structural member inside a high-voltage transformer are fastened by using standard nuts, due to structural reasons, the nuts are usually over against the lead outlet positions of coils, the lead outlet voltage level is high, the shapes of the nuts are irregular, sharp-angled burrs exist, in a high field intensity area, if the distance between the nuts and the lead outlet positions is too close, the surface field intensity of the nuts is too high, electric discharge is easy to occur, electric breakdown and thermal breakdown phenomena are caused, and the safe operation of products is influenced.
The prior art has the following three ways of solving the discharge, namely 1, increasing the distance L between a nut and a lead, but increasing the size of an oil tank, using more transformer oil and steel plates, increasing the weight and directly increasing the cost of a transformer; 2. The nut is wrapped with the insulating paper, but because the surface shape of the nut is irregular, the wrapped insulating paper is easy to form a closed air cavity, so that partial discharge is caused, and the safe operation of a product is influenced; the insulating paper needs to be dried in advance according to the process requirements, and the product needs to be wrapped completely before being assembled and dropped, so that the production efficiency of the product is influenced; and some nuts are not covered with insulating paper, so that the method cannot completely solve the problem. 3. The nut is additionally provided with the shielding cover, so that the surface field intensity of the nut can be reduced, but the shielding cover is not made of standard materials and needs to be customized, and the construction period is influenced. Moreover, after the shield is added, the distance from the shield to the lead needs to be increased, and the cost is increased.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is well known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a from shield nut for high voltage transformer, this device self possesses shielding function, need not to increase the nut to the distance of lead wire, also need not wrap insulating paper, can solve the nut because of the too near discharge problem that leads to of distance lead wire, improves the operational safety of product, can also simplify technology, and convenient operation improves production efficiency, effectively practices thrift the transformer cost.
The purpose of the utility model is realized by the following technical scheme.
A self-shielding nut for a high voltage transformer includes,
a nut body configured to be threadedly connected to a high voltage transformer, the nut body being provided with an inner bore;
an inner wall surface disposed in the bore, the inner wall surface being threaded;
an outer wall side surface provided on an outer side wall of the nut body, the outer wall side surface being a smooth surface surrounding the nut body.
In the self-shielding nut for the high-voltage transformer, the side surface of the outer wall is adjacent to the upper surface of the nut body and is provided with a smoothly-transited rounded chamfer.
In the self-shielding nut for the high-voltage transformer, the outer nut body is of a self-locking nut structure.
In the self-shielding nut for the high-voltage transformer, the side surface of the outer wall is adjacent to the upper surface and the lower surface of the nut body and is provided with smoothly-transiting round conduction angles.
In the self-shielding nut for the high-voltage transformer, the nut body, the inner wall surface and the outer wall side surface are centrosymmetric.
In the self-shielding nut for the high-voltage transformer, the central axes of the nut body, the inner wall surface and the outer wall side surface are all overlapped.
In the self-shielding nut for the high-voltage transformer, the smooth surface is of a smooth and fluctuated structure.
In the self-shielding nut for the high-voltage transformer, the undulating structure comprises a first arc area with a first curvature and a second arc area with a second curvature, and the first curvature is larger than the second curvature.
In the self-shielding nut for the high-voltage transformer, the undulation structure is a centrosymmetric structure.
In the self-shielding nut for the high-voltage transformer, the undulation structure is a non-centrosymmetric structure.
Compared with the prior art, the beneficial effects of the utility model are that:
the self-shielding nut for the high-voltage transformer is reasonable in design and simple to manufacture, effectively improves the electric field distribution of a high field intensity region, reduces the surface field intensity of the nut, is high in mechanical strength, good in electrical performance and more reliable in product operation, and can reduce the distance between a coil and an oil tank in product design due to the use of the self-shielding nut, so that the use amount of transformer oil and steel plates is reduced, and considerable economic benefits are brought.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the technical means of the present invention is implemented to the extent that those skilled in the art can implement the technical solutions according to the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following description is given by way of example of the embodiments of the present invention.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort. Also, like parts are designated by like reference numerals throughout the drawings.
In the drawings:
fig. 1 is a schematic structural view of a self-shielding nut for a high-voltage transformer according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a self-shielding nut for a high-voltage transformer according to an embodiment of the present invention;
fig. 3 is a schematic view of an assembly structure of a self-shielding nut for a high-voltage transformer according to another embodiment of the present invention.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to fig. 1 to 3. While specific embodiments of the invention are shown in the drawings, it will be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The following description is of the preferred embodiment of the invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be given by way of example with reference to the accompanying drawings, and the drawings do not limit the embodiments of the present invention.
For better understanding, as shown in fig. 1 to 3, a self-shielding nut for a high voltage transformer includes,
the nut comprises a nut body 1 and a nut body, wherein the nut body 1 is configured to be in threaded connection with a high-voltage transformer, and an inner hole is formed in the nut body 1;
an inner wall surface 2 provided in the inner bore, the inner wall surface 2 being provided with a thread;
and an outer wall side surface 3 provided on an outer side wall of the nut body 1, the outer wall side surface 3 being a smooth surface surrounding the nut body 1.
To further understand the present invention, in one embodiment, 35# round steel with a certain diameter is selected as required to meet the requirement of making the nut with the inner hole as Md. Processing round steel according to a drawing, wherein the inner wall surface 2 is arranged in the inner hole, and the inner wall surface 2 is provided with threads; an outer wall side surface 3 is provided on an outer side wall of the nut body 1, the outer wall side surface 3 being a smooth surface surrounding the nut body 1. The outer surface shape meets the fastening requirement, and meanwhile, the nut is processed into the required shape, and after the nut is processed, blackening and quenching and tempering are carried out. The self-shielding nut is used in the high field intensity area of the ultra-high voltage power transformer, the problems that the field intensity of the high field intensity area is difficult to control and discharge breakdown is easy to occur are effectively solved, and the cost of the transformer is effectively reduced.
In the preferred embodiment of the self-shielding nut for a high-voltage transformer, the outer wall side surface 3 is provided with smoothly-transiting rounded conduction angles adjacent to the upper surface of the nut body 1.
In the preferred embodiment of the self-shielding nut for the high-voltage transformer, the outer nut body 1 is of a self-locking nut structure.
In the preferred embodiment of the self-shielding nut for a high-voltage transformer, the outer wall side surface 3 is provided with smoothly-transiting rounded corners adjacent to the upper surface and the lower surface of the nut body 1.
In the preferred embodiment of the self-shielding nut for a high-voltage transformer, the nut body 1, the inner wall surface 2 and the outer wall side surface 3 are all centrosymmetric.
In the preferred embodiment of the self-shielding nut for a high-voltage transformer, the central axes of the nut body 1, the inner wall surface 2 and the outer wall side surface 3 are all coincident.
In a preferred embodiment of the self-shielding nut for a high-voltage transformer, the rounded surface is a smooth undulation structure.
In a preferred embodiment of the self-shielding nut for a high voltage transformer, the undulation structure comprises a first arc region of a first curvature and a second arc region of a second curvature, the first curvature being greater than the second curvature.
In a preferred embodiment of the self-shielding nut for a high-voltage transformer, the undulation structure is a centrosymmetric structure.
In a preferred embodiment of the self-shielding nut for a high-voltage transformer, the undulation structure is a non-centrosymmetric structure.
The utility model provides an original transformer fastening be in high electric field region with standard nut, because of the irregular discharge problem that leads to of electrode shape. The outer surface of the fastening nut used in a high field intensity area is processed into a smooth shape, the shape is regular, and sharp-angled burrs are not present. The utility model relates to a rationally, simple manufacture can effectively improve the electrode shape, reduces insulating distance, practices thrift the cost by a wide margin, and electrical properties is good, and is more stable when the operation, has good commonality.
Industrial applicability
A self-shielded nut for high voltage transformer can make and use in the power transformer field.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (10)
1. A self-shielding nut for a high-voltage transformer, comprising,
a nut body configured to be threadedly connected to a high voltage transformer, the nut body being provided with an inner bore;
an inner wall surface disposed in the bore, the inner wall surface being threaded;
an outer wall side surface provided on an outer side wall of the nut body, the outer wall side surface being a smooth surface surrounding the nut body.
2. The self-shielding nut for a high voltage transformer of claim 1, wherein the outer wall side surface is provided with smoothly transitioning rounded corners adjacent to the nut body upper or lower surface.
3. The self-shielding nut for a high voltage transformer of claim 1, wherein said outer nut body is a self-locking nut structure.
4. The self-shielding nut for a high voltage transformer of claim 1, wherein the outer wall side surface is provided with smoothly transitioning rounded corners adjacent to both the nut body upper and lower surfaces.
5. The self-shielding nut for a high voltage transformer of claim 1, wherein the nut body, the inner wall surface and the outer wall side surface are all centrosymmetric.
6. The self-shielding nut for a high voltage transformer of claim 1, wherein the central axes of the nut body, the inner wall surface and the outer wall side surface all coincide.
7. The self-shielding nut for a high voltage transformer of claim 1, wherein the rounded surface is a smooth relief.
8. The self-shielding nut for a high voltage transformer of claim 7, wherein the relief structure comprises a first arc of a first curvature and a second arc of a second curvature, the first curvature being greater than the second curvature.
9. The self-shielding nut for a high voltage transformer of claim 7, wherein the relief structure is a centrosymmetric structure.
10. The self-shielding nut for a high voltage transformer of claim 7, wherein the relief structure is a non-centrosymmetric structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921915884.8U CN210859508U (en) | 2019-11-07 | 2019-11-07 | Self-shielding nut for high-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921915884.8U CN210859508U (en) | 2019-11-07 | 2019-11-07 | Self-shielding nut for high-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210859508U true CN210859508U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921915884.8U Active CN210859508U (en) | 2019-11-07 | 2019-11-07 | Self-shielding nut for high-voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210859508U (en) |
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2019
- 2019-11-07 CN CN201921915884.8U patent/CN210859508U/en active Active
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