CN112787139A

CN112787139A - RIP sleeve pipe that possesses buffer layer structure

Info

Publication number: CN112787139A
Application number: CN202110085302.3A
Authority: CN
Inventors: 唐陈; 薛福明; 侯家威; 吴曙光; 仝德伍; 何山鹏
Original assignee: JIANGSU SIEYUAN HERTZ INSTRUMENT TRANSFORMER CO Ltd
Current assignee: JIANGSU SIEYUAN HERTZ INSTRUMENT TRANSFORMER CO Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-05-11

Abstract

The invention relates to a RIP bushing with a buffer layer structure, which is characterized in that: the capacitor comprises an insulator sleeve, a capacitor core, a conductive tube, an end cover plate, an elastic buffer layer and a wiring terminal; 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 caused by expansion with heat and contraction with cold is ensured, 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.

Description

RIP sleeve pipe that possesses buffer layer structure

Technical Field

The invention relates to the technical field of RIP (RIP) bushings, in particular to a RIP bushing with a buffer layer structure.

Background

In a general RIP sleeve, an aluminum foil is directly wound and wrapped on the outer contour of a conductive tube to serve as a 0-layer electrode, and the conductive tube is shielded through the 0-layer electrode, so that the conductive tube only plays a role in electrical connection without sharing the field intensity of a 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 a RIP bushing with a buffer layer structure, which can solve the problems of electrode position change and capacitance change caused by the peeling phenomenon between 0 layer of wound electrode and a conductive tube due to the expansion caused by heat and the contraction caused by cold of the conductive tube.

In order to solve the technical problems, the technical scheme of the invention is as follows: the RIP sleeve with the buffer layer structure is characterized in that: the capacitor comprises an insulator sleeve, a capacitor core, a conductive tube, an end cover plate, an elastic buffer layer and a wiring terminal;

an end cover plate is arranged at the end part of the insulator sleeve, and the end cover plate is connected with the insulator sleeve through a bolt; the end cover plate is provided with a through hole for accommodating the wiring terminal to pass through; one end of the connecting terminal is arranged in the insulator sleeve, and the other end of the connecting terminal penetrates through the through hole in the end cover plate and extends out of the outer side of the insulator sleeve;

the conductive tube is arranged in the insulator sleeve, and the end part of the conductive tube extends to the position close to the inner wall of the end cover plate; the axis of the conductive tube is coaxial with a through hole which is arranged on the end cover plate and used for accommodating the wiring terminal to pass through; the end part of the conductive tube is provided with a connecting hole for accommodating the embedded connecting terminal, and the connecting hole is electrically connected with the connecting terminal through a spring contact finger;

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.

Further, the outer wall circumference that embedding conductive tube tip on the binding post is provided with the recess that holds the spring and touches the finger, and is provided with the spring in the recess and touches the finger.

Furthermore, the elastic buffer layer is a rubber layer or a nylon layer.

The invention has the advantages that:

1) 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 shows a view of a RIP bushing with a buffer structure according to the invention.

Fig. 2 is a schematic view of a partial structure of a RIP bushing with a buffer structure 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, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: 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 and 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.

As shown in fig. 1 and 2, the RIP bushing with a buffer layer structure includes an insulator bushing 1, a capacitor core 2, a conductive tube 3, an end cover 4, an elastic buffer layer 5, and a terminal 6.

An end cover plate 4 is arranged at the end part of the insulator sleeve 1, and the end cover plate 4 is connected with the insulator sleeve 1 through a bolt; the end cover plate 4 is provided with a through hole for accommodating the wiring terminal 6 to pass through; one end of the wiring terminal 6 is arranged in the insulator sleeve 1, and the other end of the wiring terminal 6 penetrates through a through hole in the end cover plate 4 and extends out of the outer side of the insulator sleeve 1.

The conductive tube 3 is arranged in the insulator sleeve, and the end part of the conductive tube 3 extends to the inner wall close to the end cover plate 4; the axis of the conductive tube 3 is coaxial with a through hole on the end cover plate 4 for accommodating the connecting terminal 6 to pass through; the end of the conductive tube 3 is provided with a connection hole for receiving the terminal 6 to be inserted, and the connection hole is electrically connected to the terminal 6 through a spring finger.

The peripheral outline of the conductive tube 3 is wrapped with an elastic buffer layer 5, the length of the elastic buffer layer 5 is smaller than that of the conductive tube, and the elastic buffer layer 5 is a rubber layer; a plurality of tinned copper strips 7 are arranged at the joint of the end part conductive tubes of the elastic buffer layer 5, one part of each tinned copper strip 51 is directly attached to the outer contour of the conductive tube 3, and the other part of each tinned copper strip 7 is lapped on the outer contour of the elastic buffer layer 5; the outer side of the elastic buffer layer 5 is wrapped with an aluminum foil to form an O-layer electrode 8, and the end part of the 0-layer electrode 8 is overlapped and connected with the part of the tinned copper strip 7 lapped on the elastic buffer layer to realize the electrical connection between the 0-layer electrode 8 and the conductive tube 3; and the capacitor core 2 is poured outside the 0-layer electrode 8.

The outer wall that 3 tip of embedding contact tube on binding post 6 upwards is provided with the recess that holds the spring and touches the finger in the circumference, and is provided with the spring in the recess and touches the finger, realizes the electrical connection between binding post 6 and the contact tube 3.

The working principle of the invention is as follows: a layer of elastic buffer layer is wrapped between 0 layer of electrode aluminum foil and the conductive tube, and the end part of the elastic buffer layer is electrically connected with the outer surface of the conductive tube by adopting a plurality of tinned copper strips; 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.

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

1. A RIP bushing with a buffer layer structure, characterized in that: the capacitor comprises an insulator sleeve, a capacitor core, a conductive tube, an end cover plate, an elastic buffer layer and a wiring terminal;

2. The RIP bushing with a buffer layer structure as claimed in claim 1, wherein: the outer wall circumference that imbeds the conducting tube tip on the binding post is provided with the recess that holds the spring and touches the finger, and is provided with the spring in the recess and touches the finger.

3. The RIP bushing with a buffer layer structure as claimed in claim 1, wherein: the elastic buffer layer is a rubber layer or a nylon layer.