CN110098583B - Wall bushing and preparation method thereof - Google Patents
Wall bushing and preparation method thereof Download PDFInfo
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- CN110098583B CN110098583B CN201910397863.XA CN201910397863A CN110098583B CN 110098583 B CN110098583 B CN 110098583B CN 201910397863 A CN201910397863 A CN 201910397863A CN 110098583 B CN110098583 B CN 110098583B
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- conductive
- gasket
- porcelain piece
- area
- wall bushing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
- H01B17/583—Grommets; Bushings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/64—Insulating bodies with conductive admixtures, inserts or layers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
Abstract
The application provides a wall bushing and a preparation method thereof, wherein the wall bushing comprises: the device comprises a first end cover, a conductive bar, a second end cover, a porcelain piece and a flange; further comprising: conductive coating, buckle and conductive gasket; the conductive coating is coated on the outer surfaces of a first conductive area and a second conductive area, and the first conductive area and the second conductive area are ceramic pieces between the flange and the adjacent umbrella skirt; the conductive gasket is attached to the outer surface of the conductive coating; the buckle is arranged on the outer part of the conductive gasket and fastens the conductive gasket on the outer part of the conductive coating. The utility model provides a wall bushing can effectively solve the poor problem of current wall bushing insulation effect.
Description
Technical Field
The application relates to the technical field of power system electricity utilization safety, in particular to a wall bushing and a preparation method thereof.
Background
The wall bushing is an important component of a high-voltage switch cabinet and is widely applied to a power system. The wall bushing is suitable for use in electrical distribution equipment and high voltage electrical equipment in substations, and serves as an insulation and support for the conductive part passing through the wall or other grounding objects.
In recent years, a great number of wall bushing faults have occurred in various power grid companies, wherein insulation faults of which the wall bushings are mainly in the form of discharge account for most of the wall bushing faults, and the consequences caused by the insulation faults are often serious. Therefore, the key for ensuring the stable operation of the wall bushing is to avoid the occurrence of insulation faults. The insulation failure of the wall bushing is usually caused by the fact that the semi-conductor glaze on the outer surface of the porcelain piece in the wall bushing is not equipotential with the ground, so that a serious discharge phenomenon can be generated, and the normal operation of a power system is influenced.
Disclosure of Invention
The application provides a wall bushing and a preparation method thereof, which aim to solve the problem that the existing wall bushing is poor in insulation effect.
In a first aspect, the present application provides a wall bushing comprising: the device comprises a first end cover, a conductive bar, a second end cover, a porcelain piece and a flange; the first end cover and the second end cover are respectively arranged at two ends of the porcelain piece; the porcelain piece is of a hollow structure, and the conducting bar penetrates through the porcelain piece along the axial direction of the porcelain piece; a plurality of umbrella skirts are arranged outside the porcelain piece and perpendicular to the axis of the porcelain piece; the flange is further arranged on the porcelain piece and is arranged between the two umbrella skirts; further comprising: conductive coating, buckle and conductive gasket;
the conductive coating is coated on the outer surfaces of a first conductive area and a second conductive area, and the first conductive area and the second conductive area are ceramic pieces between the flange and the adjacent umbrella skirt;
the conductive gasket is attached to the outer surface of the conductive coating;
the buckle is arranged on the outer part of the conductive gasket and fastens the conductive gasket on the outer part of the conductive coating.
Optionally, the number of the conductive gaskets is 2;
the conductive gasket is arc-shaped, and the axis of the porcelain piece is taken as a symmetry axis and is symmetrically arranged on the outer surface of the conductive coating.
Optionally, the buckle is annular;
the buckle is made of a conductive material;
the buckle includes: the tightening device comprises a main body, a tightening end and a tightening pin;
the main part is provided with an opening, the tightening end is correspondingly arranged at the opening, and the tightening pin is arranged in the tightening end in a matching manner.
Optionally, the conductive coating is a metallic paint or a semi-conductive paint.
Optionally, the conductive gasket is made of graphite material.
In a second aspect, the present application provides a method of making a wall bushing, the method comprising:
spraying a conductive material on a first conductive area and a second conductive area, wherein the first conductive area and the second conductive area are porcelain pieces between flanges and adjacent umbrella skirts;
a conductive gasket is attached to the outside of the sprayed conductive coating;
a buckle is arranged outside the conductive gasket to enable the conductive gasket to be tightly attached to the outside of the conductive coating;
and grounding the buckle.
As can be seen from the above technology, the present application provides a wall bushing and a method for manufacturing the same, wherein the wall bushing includes: the device comprises a first end cover, a conductive bar, a second end cover, a porcelain piece and a flange; the first end cover and the second end cover are respectively arranged at two ends of the porcelain piece; the porcelain piece is of a hollow structure, and the conducting bar penetrates through the porcelain piece along the axial direction of the porcelain piece; a plurality of umbrella skirts are arranged outside the porcelain piece and perpendicular to the axis of the porcelain piece; the flange is further arranged on the porcelain piece and is arranged between the two umbrella skirts; further comprising: conductive coating, buckle and conductive gasket; the conductive coating is coated on the outer surfaces of a first conductive area and a second conductive area, and the first conductive area and the second conductive area are ceramic pieces between the flange and the adjacent umbrella skirt; the conductive gasket is attached to the outer surface of the conductive coating; the buckle is arranged on the outer part of the conductive gasket and fastens the conductive gasket on the outer part of the conductive coating. In use, the conductive coating is coated on the outer surfaces of the first and second conductive areas to enhance the conductivity of the first and second conductive areas, thereby conducting leakage current from the wall bushing to the first and second conductive areas. Simultaneously, through setting up in the outside buckle of conductive coating, further lead leakage current to ground, guarantee wall bushing ground connection, avoid wall bushing and ground to have the potential difference and cause the problem of discharging. Meanwhile, the conductive gasket is additionally arranged between the buckle and the first conductive area and the second conductive area, so that the first conductive area, the second conductive area and the buckle can be protected from being mutually damaged due to contact on the basis of enhancing good contact of the first conductive area and the second conductive area with the buckle. It is thus clear that the wall bushing that this application provided can effectively solve the poor problem of current wall bushing insulating effect.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of a wall bushing according to an embodiment of the present disclosure;
FIG. 2 is a radial cross-sectional view of a wall bushing according to an embodiment of the present application;
fig. 3 is a flowchart of a method for manufacturing a wall bushing according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.
Please refer to fig. 1 and fig. 2.
A wall bushing, comprising: the structure comprises a first end cover 1, a conducting bar 2, a second end cover 3, a porcelain piece 4 and a flange 5; the first end cover 1 and the second end cover 3 are respectively arranged at two ends of the porcelain piece 4; the porcelain piece 4 is of a hollow structure, and the conducting bar 2 penetrates through the porcelain piece 4 along the axial direction of the porcelain piece 4; a plurality of umbrella skirts 41 are arranged outside the porcelain piece 4 and perpendicular to the axis of the porcelain piece 4; the flange 5 is further arranged on the porcelain piece 4, and the flange 5 is arranged between the two umbrella skirts 41; it is characterized by also comprising: conductive coating 44, snaps 45, and conductive pads 46;
the conductive coating 44 is coated on the outer surfaces of the first conductive area 42 and the second conductive area 43, and the first conductive area 42 and the second conductive area 43 are ceramic pieces 4 between the flange 5 and the adjacent umbrella skirt 41;
the conductive pad 46 is attached to the outer surface of the conductive coating 44;
the snap 45 is disposed on the outside of the conductive pad 46 and secures the conductive pad 46 to the outside of the conductive coating 44.
In use, the conductive coating 44 is applied to the outer surfaces of the first and second conductive areas 42, 43 to enhance the conductivity of the first and second conductive areas 42, 43, thereby conducting leakage current from the wall bushing to the first and second conductive areas 42, 43. Meanwhile, the leakage current is further guided to the ground through the buckle 45 arranged outside the conductive coating 44, the grounding of the wall bushing is ensured, and the problem of discharging caused by potential difference between the wall bushing and the ground is avoided. Meanwhile, the conductive gasket 46 is additionally arranged between the buckle 45 and the first conductive area 42 and the second conductive area 43, so that the first conductive area 42 and the second conductive area 43 can be protected from being damaged by contact with the buckle 45 on the basis of enhancing good contact between the first conductive area 42 and the buckle 45 and between the first conductive area 42 and the buckle and between the second conductive area 43 and the buckle. It is thus clear that the wall bushing that this application provided can effectively solve the poor problem of current wall bushing insulating effect.
Further, the number of the conductive pads 46 is 2;
the conductive pad 46 is arc-shaped and symmetrically disposed on the outer surface of the conductive coating 44 with the axis of the porcelain 4 as a symmetry axis.
The conductive gasket 46 is arc-shaped and can be better attached to the outer side of the conductive coating 44, and it should be noted that the size of the conductive gasket 46 is adapted to the outer sizes of the first conductive area 42 and the second conductive area 43, so that only the good attachment of the conductive gasket 46 and the conductive coating 44 is ensured, the guiding effect on the leakage current can be improved, and meanwhile, the danger of short circuit and the like caused by the gap existing between the conductive gasket 46 and the conductive coating 44 is avoided.
Meanwhile, the number of the conductive pads 46 is 2, and are symmetrically disposed on the outer surface of the conductive coating 44. In the embodiment of the application, a full annular conductive gasket is not adopted, but a semi-arc conductive gasket is adopted, and if the full annular conductive gasket is adopted, the size of the conductive gasket is fixed, and correspondingly, the size of the wall bushing adapted to the conductive gasket is unique. In the use process, the conductive gasket can not be applied to wall bushing of other models, and once the conductive gasket is damaged, the conductive gasket is difficult to adapt to a proper conductive gasket for the wall bushing. And the semi-arc conductive gasket is adopted, and the position of the conductive gasket outside the conductive coating 44 can be adaptively adjusted through a gap between the two conductive gaskets, so that the conductive gasket 46 is well attached to the conductive coating 44. It should be noted that there may be a plurality of conductive pads 46, but the number of the conductive pads 46 is not suitable for being too large, and if there is too many conductive pads 46, the difficulty of fixing the conductive pads 46 in the buckle 45 is greatly increased; meanwhile, the number of the conductive pads 46 should not be too small, and if the number of the conductive pads 46 is too small, the conductive effect is also reduced.
Further, the buckle 45 is annular;
the buckle 45 is made of a conductive material;
the clip 45 includes: a main body 451, a tightening end 452, and a tightening pin 453;
the main body 451 is provided with an opening, the tightening end 452 is correspondingly disposed at the opening, and the tightening pin 453 is fittingly disposed in the tightening end 452.
When the conductive gasket 46 is used, the main body 451 of the buckle 45 can be well adapted to the external dimensions of the first conductive area 42 and the second conductive area 43, and meanwhile, the tightening pin 453 is screwed into the tightening end 452, so that the distance between the two tightening ends 452 can be adjusted, the overall tightening effect of the buckle 45 is further adjusted, the buckle is tightly attached to the outside of the conductive gasket 46, and the conductive gasket 46 and the conductive coating 44 are tightly attached.
The buckle 45 is made of a conductive material, so that a good conductive effect can be guaranteed, and current is guided to be grounded.
Further, the conductive coating 44 is made of a metallic paint or a semi-conductive paint.
Further, the conductive pad 46 is made of graphite material.
Meanwhile, referring to fig. 3, an embodiment of the present application further provides a method for preparing a wall bushing, where the method includes:
s100, spraying conductive materials on a first conductive area 42 and a second conductive area 43, wherein the first conductive area 42 and the second conductive area 43 are porcelain pieces 4 between a flange 5 and an adjacent umbrella skirt 41;
s200, attaching a conductive gasket 46 to the outside of the sprayed conductive coating 44;
s300, installing a buckle 45 on the outer part of the conductive gasket 46 to enable the conductive gasket 46 to be tightly attached to the outer part of the conductive coating 44;
and S400, grounding the buckle 45.
Since the first conductive area 42 and the second conductive area 43 are areas of the wall bushing that are easy to discharge, determining the grounding positions as the first conductive area 42 and the second conductive area 43 can effectively guide more leakage current to ground. The conductive material is sprayed on the exterior of the first conductive area 42 and the second conductive area 43, which can effectively improve the conductive effect of the first conductive area 42 and the second conductive area 43. Meanwhile, the conductive gasket 46 is attached to the outer portion of the conductive coating 44, so that good contact between the conductive coating 44 and the buckle 45 can be effectively guaranteed, and the conductive coating 44 and the buckle 45 are protected. Through with buckle 45 ground connection to the leakage current ground connection in the guide wall bushing, and then guarantee the effective ground connection of wall bushing.
According to the technical scheme, the embodiment of the application provides a wall bushing and a preparation method thereof, wherein the wall bushing comprises: the structure comprises a first end cover 1, a conducting bar 2, a second end cover 3, a porcelain piece 4 and a flange 5; the first end cover 1 and the second end cover 3 are respectively arranged at two ends of the porcelain piece 4; the porcelain piece 4 is of a hollow structure, and the conducting bar 2 penetrates through the porcelain piece 4 along the axial direction of the porcelain piece 4; a plurality of umbrella skirts 41 are arranged outside the porcelain piece 4 and perpendicular to the axis of the porcelain piece 4; the flange 5 is further arranged on the porcelain piece 4, and the flange 5 is arranged between the two umbrella skirts 41; it is characterized by also comprising: conductive coating 44, snaps 45, and conductive pads 46; the conductive coating 44 is coated on the outer surfaces of the first conductive area 42 and the second conductive area 43, and the first conductive area 42 and the second conductive area 43 are ceramic pieces 4 between the flange 5 and the adjacent umbrella skirt 41; the conductive pad 46 is attached to the outer surface of the conductive coating 44; the snap 45 is disposed on the outside of the conductive pad 46 and secures the conductive pad 46 to the outside of the conductive coating 44. In use, the conductive coating 44 is applied to the outer surfaces of the first and second conductive areas 42, 43 to enhance the conductivity of the first and second conductive areas 42, 43, thereby conducting leakage current from the wall bushing to the first and second conductive areas 42, 43. Meanwhile, the leakage current is further guided to the ground through the buckle 45 arranged outside the conductive coating 44, the grounding of the wall bushing is ensured, and the problem of discharging caused by potential difference between the wall bushing and the ground is avoided. Meanwhile, the conductive gasket 46 is additionally arranged between the buckle 45 and the first conductive area 42 and the second conductive area 43, so that the first conductive area 42 and the second conductive area 43 can be protected from being damaged by contact with the buckle 45 on the basis of enhancing good contact between the first conductive area 42 and the buckle 45 and between the first conductive area 42 and the buckle and between the second conductive area 43 and the buckle. It is thus clear that the wall bushing that this application provided can effectively solve the poor problem of current wall bushing insulating effect.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (3)
1. A wall bushing, comprising: the device comprises a first end cover (1), a conductive bar (2), a second end cover (3), a porcelain piece (4) and a flange (5); the first end cover (1) and the second end cover (3) are respectively arranged at two ends of the porcelain piece (4); the porcelain piece (4) is of a hollow structure, and the conducting bar (2) penetrates through the porcelain piece (4) along the axial direction of the porcelain piece (4); a plurality of umbrella skirts (41) are arranged on the outer portion of the porcelain piece (4) and perpendicular to the axis of the porcelain piece (4); the flange (5) is further arranged on the porcelain piece (4), and the flange (5) is arranged between the two umbrella skirts (41); it is characterized by also comprising: a conductive coating (44), a snap (45) and a conductive gasket (46);
the conductive coating (44) is coated on the outer surfaces of a first conductive area (42) and a second conductive area (43), and the first conductive area (42) and the second conductive area (43) are porcelain pieces (4) between the flange (5) and an adjacent umbrella skirt (41);
the conductive gasket (46) is attached to the outer surface of the conductive coating (44);
the snap (45) is arranged on the outer part of the conductive gasket (46) and fastens the conductive gasket (46) on the outer part of the conductive coating (44);
the number of the conductive gaskets (46) is 2;
the conductive gasket (46) is arc-shaped, and is symmetrically arranged on the outer surface of the conductive coating (44) by taking the axis of the porcelain piece (4) as a symmetry axis;
the conductive coating (44) is made of metallic paint or semi-conductive paint;
the conductive gasket (46) is made of graphite material.
2. A wall bushing according to claim 1, wherein the snap (45) is ring-shaped;
the buckle (45) is made of a conductive material;
the clasp (45) comprises: a main body (451), a tightening end (452), and a tightening pin (453);
the main body (451) is provided with an opening, the tightening end (452) is correspondingly arranged at the opening, and the tightening pin (453) is arranged in the tightening end (452) in a matching manner.
3. A method of preparing a wall bushing according to claim 1 or 2, wherein the method comprises:
spraying a conductive material on a first conductive area (42) and a second conductive area (43), wherein the first conductive area (42) and the second conductive area (43) are porcelain pieces (4) between a flange (5) and an adjacent umbrella skirt (41);
attaching a conductive gasket (46) to the outside of the sprayed conductive coating (44), wherein the conductive coating (44) is made of metallic paint or semi-conductive paint, and the conductive gasket (46) is made of graphite material;
a buckle (45) is arranged outside the conductive gasket (46) to enable the conductive gasket (46) to be tightly attached to the outside of the conductive coating (44);
wherein the number of the conductive gaskets (46) is 2;
the conductive gasket (46) is arc-shaped, and is symmetrically arranged on the outer surface of the conductive coating (44) by taking the axis of the porcelain piece (4) as a symmetry axis;
grounding the buckle (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397863.XA CN110098583B (en) | 2019-05-14 | 2019-05-14 | Wall bushing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397863.XA CN110098583B (en) | 2019-05-14 | 2019-05-14 | Wall bushing and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110098583A CN110098583A (en) | 2019-08-06 |
| CN110098583B true CN110098583B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910397863.XA Active CN110098583B (en) | 2019-05-14 | 2019-05-14 | Wall bushing and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112018686B (en) * | 2020-07-17 | 2022-04-01 | 清华大学 | High-voltage AC/DC wall bushing of 35kV or below and preparation method thereof |
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| DE3242073A1 (en) * | 1982-11-13 | 1984-05-17 | kabelmetal electro GmbH, 3000 Hannover | Bushing for an electrical lead |
| CN1083965A (en) * | 1992-09-10 | 1994-03-16 | 双鸭山市电瓷电器厂 | Duct for coming bus penetrating wall |
| CN102801123B (en) * | 2012-07-10 | 2015-04-29 | 江苏电科电气设备有限公司 | 20KV sleeve |
| CN204680540U (en) * | 2015-05-20 | 2015-09-30 | 安徽航睿电子科技有限公司 | A kind of novel capacitor erecting device |
| CN106486944A (en) * | 2015-08-26 | 2017-03-08 | 衡阳华瑞电气有限公司 | A kind of porcelain wall bushing |
| CN205811469U (en) * | 2016-05-26 | 2016-12-14 | 国网新疆电力公司乌鲁木齐供电公司 | A kind of high-voltage wall bushing of three element structures |
| CN205790527U (en) * | 2016-08-18 | 2016-12-07 | 深圳市惠程电气股份有限公司 | NEW TYPE OF COMPOSITE silicone rubber E molded cannula test plug |
| CN206099227U (en) * | 2016-08-22 | 2017-04-12 | 江苏智达高压电气有限公司 | Special high voltage direct current wall bushing |
| CN207719768U (en) * | 2017-12-21 | 2018-08-10 | 扬州发运电气有限公司 | A kind of composite dry-type wall bushing |
| CN109342901B (en) * | 2018-11-27 | 2024-02-09 | 福州天宇电气股份有限公司 | Wall bushing with insulation state on-line monitoring function and working method thereof |
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2019
- 2019-05-14 CN CN201910397863.XA patent/CN110098583B/en active Active
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| Title |
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| 高压直流穿墙套管有无RTV涂层的淋雨及污秽试验;H-M Schneider等;《华中电力》;19931220(第06期);全文 * |
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