CN112951563B - Alternating-current transformer bushing structure - Google Patents
Alternating-current transformer bushing structure Download PDFInfo
- Publication number
- CN112951563B CN112951563B CN202110125782.1A CN202110125782A CN112951563B CN 112951563 B CN112951563 B CN 112951563B CN 202110125782 A CN202110125782 A CN 202110125782A CN 112951563 B CN112951563 B CN 112951563B
- Authority
- CN
- China
- Prior art keywords
- conductive tube
- tail
- layer
- supporting cylinder
- wiring terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
The invention relates to a sleeve structure of an alternating-current transformer, which is characterized in that: the device comprises an insulator supporting cylinder, a capacitor core, a conductive tube and a shielding ball; the primary penetrating-out wiring terminal is simple in structure, is electrically connected with the primary penetrating-out wiring terminal through the spring contact finger, and is fastened on the end cover plate through the bolt; the problems that the electrical connection between the military cap and the conductive tube is unreliable and the contact resistance is increased to cause serious heating of a product due to the fact that failure easily occurs in a mode of matching the military cap with the spring are solved; a layer of elastic buffer layer is wrapped between the 0 layer of electrode aluminum foil and the conductive tube, and the end part adopts a plurality of tinned copper strips to be electrically connected with the outer surface of the conductive tube; ensuring the position of the electrode to be unchanged; the conditions that the capacitance changes and the electrode position changes due to the fact that 0 layer of electrode aluminum foil is stripped from the conductive tube due to thermal expansion are avoided, and the reliability of the RIP sleeve is improved.
Description
Technical Field
The invention relates to the technical field of alternating current transformer bushings, in particular to an alternating current transformer bushing structure.
Background
The general connecting terminal on the alternating current transformer bushing adopts a general military cap type structure, as shown in fig. 1, when the alternating current transformer bushing adopts a current-carrying structure of a conductive tube, if the military cap structure 1 is adopted, a pull rod structure needs to be matched for matching, the structure is complex, a limiting effect needs to be realized by a compression spring 2, the spring 2 is in a compression state for a long time, failure is easy to occur, the electrical connection between the military cap structure 1 and the conductive tube is unreliable, the contact resistance is increased, and the problem that the product is seriously heated is caused;
the outer contour of the conductive tube is directly wound and wrapped with the aluminum foil as a 0-layer electrode, and the conductive tube is shielded by the 0-layer electrode, so that the conductive tube only plays a role in electrical connection without sharing the field intensity of the capacitor core; however, in this structure, the conductive tube is generally an aluminum tube or copper tube structure; when the environmental temperature changes, the conductive tube can expand with heat and contract with cold due to the characteristics of the material; the aluminum foil of the 0-layer electrode directly wound and connected with the conductive tube changes the position of the electrode due to the expansion and contraction of the conductive tube, so that the capacitance is changed; sometimes, peeling phenomenon occurs between the 0-layer electrode and the conductive tube, and the reliability of electrical connection is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an alternating current transformer bushing structure, which can solve the problems that the electrical connection between a military cap and a conductive tube is unreliable and the contact resistance is increased due to the adoption of a general military cap type structure of a wiring terminal of an alternating current transformer bushing, so that the product is seriously heated, and the problems that the position of an electrode is changed and the capacitance is changed due to the peeling phenomenon between a wound 0-layer electrode and the conductive tube caused by the expansion caused by heat and the contraction caused by cold of the conductive tube are solved.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides an alternating current transformer bushing structure which innovation point lies in: the device comprises an insulator supporting cylinder, a capacitor core, a conductive tube and a shielding ball;
a plurality of umbrella skirts are uniformly bonded on the outer surface of the insulator supporting cylinder, and an insulator upper flange and an insulator lower flange are respectively arranged at the head part and the tail part of the insulator supporting cylinder; an end cover plate is arranged at the head of the insulator supporting cylinder and is connected with an insulator upper flange through a bolt; the capacitor core is wound on a conductive tube, and the conductive tube is arranged in the insulator supporting cylinder and is coaxial with the insulator supporting cylinder;
the head part of the conductive tube is positioned at the inner side of the insulator supporting cylinder, and the tail part of the conductive tube extends out of the end part of the insulator supporting cylinder; the head part of the conductive tube is provided with a primary penetrating wiring terminal, and the tail part of the conductive tube is provided with a tail wiring terminal; one end of the first penetrating wiring terminal at the head of the conductive tube is embedded into the conductive tube, a groove for accommodating a spring contact finger is circumferentially arranged on the outer wall of the part of the first penetrating wiring terminal embedded into the conductive tube, and the spring contact finger is arranged in the groove; the other end of the primary penetrating wiring terminal penetrates through the end cover plate, a primary penetrating wiring terminal pressing plate is welded in the direction perpendicular to the axis of the primary penetrating wiring terminal, and the primary penetrating wiring terminal pressing plate is connected to the end cover plate through a bolt;
a connecting flange is arranged on the outer contour of the capacitor core and is connected with an insulator lower flange at the end part of the insulator supporting cylinder in a locking way through a bolt, and a sleeve mounting flange is arranged on one side of the connecting flange and positioned on the capacitor core;
one end of a tail connecting terminal at the tail part of the conductive tube is embedded into the tail part of the conductive tube, and the other end of the tail connecting terminal of the conductive tube extends out of the tail part of the conductive tube; the shielding ball is arranged at the tail end of the conductive tube and is embedded on the capacitor core wound at the tail end of the conductive tube;
the peripheral outer contour of the conductive tube is wrapped with an elastic buffer layer, and the length of the elastic buffer layer is smaller than that of the conductive tube; a plurality of tinned copper strips are arranged at the joint of the end part conductive tube of the elastic buffer layer, one part of the tinned copper strips is directly attached to the outer contour of the conductive tube, and the other part of the tinned copper strips is lapped on the outer contour of the elastic buffer layer; the outer side of the elastic buffer layer is wrapped with an aluminum foil to form an O-layer electrode, and the end part of the 0-layer electrode is overlapped and connected with the part of the tin-plated copper belt lapped on the elastic buffer layer to realize the electrical connection between the 0-layer electrode and the conductive tube; and a capacitor core is poured on the outer side of the 0-layer electrode.
Furthermore, a measuring terminal is arranged between the sleeve mounting flange and the connecting flange.
Furthermore, the elastic buffer layer is a rubber layer or a nylon layer.
The invention has the advantages that:
1) the one-time penetrating-out type connecting terminal is simple in structure, is electrically connected with the one-time penetrating-out connecting terminal through the spring contact finger, and is fastened on the end cover plate through the bolt; the structure has high reliability of electrical connection, simple structure and lower material cost; the problem that the adoption of the mode of matching the military cap with the spring is easy to lose efficacy, so that the electrical connection between the military cap and the conductive tube is unreliable, the contact resistance is increased, and the product generates heat seriously is avoided.
2) In the invention, a layer of elastic buffer layer is wrapped between 0 layer of electrode aluminum foil and the conductive tube, and the end part adopts a plurality of tinned copper strips to be electrically connected with the outer surface of the conductive tube; the conductive tube is shielded by 0 layer of electrode aluminum foil without sharing the field intensity of the capacitor core, and the deformation of the conductive tube is absorbed by the elastic buffer layer when the conductive tube expands with heat and contracts with cold, so that the position of the electrode is not changed; the conditions that the capacitance changes and the electrode position changes due to the fact that 0 layer of electrode aluminum foil is stripped from the conductive tube due to thermal expansion are avoided, and the reliability of the RIP sleeve is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of a conventional general hat type one-pass piercing terminal.
Fig. 2 is a schematic structural diagram of an ac transformer bushing according to the present invention.
Fig. 3 is an assembly view of a primary connection terminal of an ac transformer bushing structure according to the present invention.
FIG. 4 is a partial structural diagram of a capacitor core with a bushing structure of an AC transformer according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
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, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 2 to 4 show a bushing structure of an ac transformer, which includes an insulator support cylinder 3, a capacitor core 4, a conductive tube 5 and a shielding ball 6.
A plurality of umbrella skirts 11 are uniformly bonded on the outer surface of the insulator supporting cylinder, and an insulator upper flange 12 and an insulator lower flange 13 are respectively arranged at the head and the tail of the insulator supporting cylinder; an end cover plate 14 is arranged at the head part of the insulator supporting cylinder, and the end cover plate 14 is connected with the insulator upper flange 12 through a bolt; the capacitor core 4 is wound on the conductive tube 5, and the conductive tube 5 is arranged in the insulator supporting cylinder and is coaxial with the insulator supporting cylinder.
The head of the conductive tube 5 is positioned at the inner side of the insulator supporting cylinder, and the tail of the conductive tube 5 extends out of the end part of the insulator supporting cylinder; the head part of the conductive tube 5 is provided with a primary penetrating wiring terminal 51, and the tail part of the conductive tube 5 is provided with a tail wiring terminal 52; one end of a primary penetrating wiring terminal 51 at the head of the conductive tube 5 is embedded into the conductive tube 5, a groove for accommodating the spring contact finger 7 is arranged on the circumferential direction of the outer wall of the part, embedded into the conductive tube 5, of the primary penetrating wiring terminal 51, and the spring contact finger 7 is arranged in the groove; the other end of the one-time piercing-out wiring terminal 5 pierces out of the end cover plate 14, the one-time piercing-out wiring terminal 51 is welded perpendicularly to the axis direction with a one-time piercing-out wiring terminal pressing plate 53, and the one-time piercing-out wiring terminal pressing plate 53 is connected to the end cover plate 14 through a bolt.
The outer contour of the capacitor core 4 is provided with a connecting flange 41, the connecting flange 41 is connected with the lower insulator flange at the end of the insulator supporting cylinder in a locking manner through bolts, and a sleeve mounting flange 42 is arranged on one side of the connecting flange 41 and positioned on the capacitor core 4.
One end of a tail connecting terminal 52 at the tail part of the conductive tube 5 is embedded in the tail part of the conductive tube 5, and the other end of the tail connecting terminal 52 of the conductive tube extends out of the tail part of the conductive tube 5; the shielding ball 6 is arranged at the tail end of the conductive tube 5 and is nested on the capacitor core 4 wound at the tail end of the conductive tube 5.
The circumferential outer contour of the conductive tube 5 is wrapped with an elastic buffer layer 8, and the length of the elastic buffer layer 8 is smaller than that of the conductive tube; a plurality of tinned copper strips 9 are arranged at the joint of the end part conductive tube 5 of the elastic buffer layer 8, one part of each tinned copper strip 9 is directly attached to the outer contour of the conductive tube 5, and the other part of each tinned copper strip 9 is lapped on the outer contour of the elastic buffer layer 8; the outer side of the elastic buffer layer 8 is wrapped with an aluminum foil to form an O-layer electrode, and the end part of the 0-layer electrode is overlapped and connected with the part of the tinned copper strip 9 lapped on the elastic buffer layer 8 to realize the electrical connection between the 0-layer electrode and the conductive tube; and a capacitor core 4 is poured outside the 0-layer electrode.
A measurement terminal 43 is arranged between the sleeve mounting flange 42 and the connection flange 41.
The elastic buffer layer 8 is a rubber layer or a nylon layer.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides an alternating current transformer bushing structure which characterized in that: the device comprises an insulator supporting cylinder, a capacitor core, a conductive tube and a shielding ball;
a plurality of umbrella skirts are uniformly bonded on the outer surface of the insulator supporting cylinder, and an insulator upper flange and an insulator lower flange are respectively arranged at the head part and the tail part of the insulator supporting cylinder; an end cover plate is arranged at the head of the insulator supporting cylinder and is connected with an insulator upper flange through a bolt; the capacitor core is wound on a conductive tube, and the conductive tube is arranged in the insulator supporting cylinder and is coaxial with the insulator supporting cylinder;
the head part of the conductive tube is positioned at the inner side of the insulator supporting cylinder, and the tail part of the conductive tube extends out of the end part of the insulator supporting cylinder; the head part of the conductive tube is provided with a primary penetrating wiring terminal, and the tail part of the conductive tube is provided with a tail wiring terminal; one end of the first penetrating wiring terminal at the head part of the conductive tube is embedded into the conductive tube, a groove for accommodating a spring contact finger is arranged on the outer wall of the part, embedded into the conductive tube, of the first penetrating wiring terminal in the circumferential direction, and the spring contact finger is arranged in the groove; the other end of the primary penetrating wiring terminal penetrates through the end cover plate, a primary penetrating wiring terminal pressing plate is welded in the direction perpendicular to the axis of the primary penetrating wiring terminal, and the primary penetrating wiring terminal pressing plate is connected to the end cover plate through a bolt;
a connecting flange is arranged on the outer contour of the capacitor core and is connected with an insulator lower flange at the end part of the insulator supporting cylinder in a locking way through a bolt, and a sleeve mounting flange is arranged on one side of the connecting flange and positioned on the capacitor core;
one end of a tail connecting terminal at the tail part of the conductive tube is embedded into the tail part of the conductive tube, and the other end of the tail connecting terminal of the conductive tube extends out of the tail part of the conductive tube; the shielding ball is arranged at the tail end of the conductive tube and is embedded on the capacitor core wound at the tail end of the conductive tube;
the peripheral outer contour of the conductive tube is wrapped with an elastic buffer layer, and the length of the elastic buffer layer is smaller than that of the conductive tube; a plurality of tinned copper strips are arranged at the joint of the end part conductive tube of the elastic buffer layer, one part of the tinned copper strips is directly attached to the outer contour of the conductive tube, and the other part of the tinned copper strips is lapped on the outer contour of the elastic buffer layer; the outer side of the elastic buffer layer is wrapped with an aluminum foil to form an O-layer electrode, and the end part of the 0-layer electrode is overlapped and connected with the part of the tin-plated copper belt lapped on the elastic buffer layer to realize the electrical connection between the 0-layer electrode and the conductive tube; and a capacitor core is poured outside the 0 layer of electrode.
2. An ac transformer bushing structure according to claim 1, wherein: and a measuring terminal is arranged between the sleeve mounting flange and the connecting flange.
3. An ac transformer bushing structure according to claim 1, wherein: the elastic buffer layer is a rubber layer or a nylon layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125782.1A CN112951563B (en) | 2021-01-29 | 2021-01-29 | Alternating-current transformer bushing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125782.1A CN112951563B (en) | 2021-01-29 | 2021-01-29 | Alternating-current transformer bushing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112951563A CN112951563A (en) | 2021-06-11 |
| CN112951563B true CN112951563B (en) | 2022-07-12 |
Family
ID=76239666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110125782.1A Active CN112951563B (en) | 2021-01-29 | 2021-01-29 | Alternating-current transformer bushing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951563B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205542326U (en) * | 2016-01-08 | 2016-08-31 | 中国南方电网有限责任公司超高压输电公司 | Three umbellate form umbrella skirt structure's dry -type glass steel change of current vary voltage sleeve pipe |
| CN208796801U (en) * | 2018-10-12 | 2019-04-26 | 山东彼岸电力科技有限公司 | A kind of insulation filling type capacitance type transformer sleeve |
-
2021
- 2021-01-29 CN CN202110125782.1A patent/CN112951563B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205542326U (en) * | 2016-01-08 | 2016-08-31 | 中国南方电网有限责任公司超高压输电公司 | Three umbellate form umbrella skirt structure's dry -type glass steel change of current vary voltage sleeve pipe |
| CN208796801U (en) * | 2018-10-12 | 2019-04-26 | 山东彼岸电力科技有限公司 | A kind of insulation filling type capacitance type transformer sleeve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112951563A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100482008C (en) | Induction heater | |
| US20130194712A1 (en) | Multiple concentric wound film capacitors | |
| CN207852484U (en) | A kind of metallic film filter capacitor monitoring internal temperature | |
| CN112951563B (en) | Alternating-current transformer bushing structure | |
| US20130143453A1 (en) | Wire connecting terminal for enameled wires | |
| US4390891A (en) | Semiconductor component with a plurality of semiconductor elements | |
| CN206041421U (en) | Insulation tubular busbar end connecting device based on a mouthful elastic force rises | |
| JP2022537283A (en) | Electrochemical energy storage device | |
| WO2023155507A1 (en) | Heater and atomization device | |
| CN214478032U (en) | RIP sleeve pipe that possesses buffer layer structure | |
| CN216958531U (en) | Passive wireless intelligent copper-aluminum transition terminal of RFID | |
| CN212844053U (en) | Increase solid sheathed tube heat conduction high pressure sensor | |
| CN112787139A (en) | RIP sleeve pipe that possesses buffer layer structure | |
| CN114563602A (en) | Shielding probe device, low-temperature probe platform and low-temperature probe system | |
| CN215265779U (en) | Lightning protection device | |
| CN209087589U (en) | A kind of shock-proof type power capacitor | |
| CN217390439U (en) | Sensing mechanism, empty pot detection device and electric rice cooker | |
| CN214476889U (en) | Novel dry-type RIP alternating current transformer sleeve pipe binding post structure | |
| CN210984417U (en) | Brake resistor | |
| CN112802669A (en) | Novel dry-type RIP alternating current transformer sleeve pipe binding post structure | |
| CN220106492U (en) | Low-conduction voltage drop silicon controlled rectifier chip | |
| CN220934546U (en) | Novel laminated busbar structure | |
| CN218866905U (en) | Passive element structure | |
| CN215911318U (en) | Aluminum electrolytic capacitor | |
| CN214754192U (en) | Take binaural electrode and be equipped with high temperature detection device who takes binaural electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |