A RIP casing with a buffer layer structure

Abstract

The invention relates to a RIP bushing with a buffer layer structure, which is characterized by comprising an insulator bushing, a capacitor core, a conductive tube, an end cover, an elastic buffer layer and a wiring terminal. In the invention, an elastic buffer layer is wrapped between a 0-layer electrode aluminum foil and the conductive tube, and a plurality of tinned copper strips are used at the end to electrically connect the conductive tube to the outer surface. While ensuring that the 0-layer electrode aluminum foil shields the conductive tube and does not share the field strength of the capacitor core, it is also ensured that the conductive tube is deformed by the elastic buffer layer when it expands and contracts due to heat, so that the position of the electrode remains unchanged. The 0-layer electrode aluminum foil is prevented from peeling off from the conductive tube due to thermal expansion, resulting in changes in capacitance and electrode position, thereby improving the reliability of the RIP bushing.

Description

Technical Field

[0001] The present invention relates to the technical field of RIP sleeves, and in particular to a RIP sleeve with a buffer layer structure. Background Art

[0002] In a general RIP sleeve, aluminum foil is directly wrapped around the outer contour of the conductive tube as a 0-layer electrode, and the conductive tube is shielded by the 0-layer electrode, so that the conductive tube only serves as an electrical connection without sharing the field strength of the capacitor core; however, in this structure, since the conductive tube is generally made of an aluminum tube or a copper tube structure; when the ambient temperature changes, the conductive tube will expand and contract due to the characteristics of the material; and the aluminum foil of the 0-layer electrode directly wound and connected to the conductive tube will change its electrode position due to the thermal expansion and contraction of the conductive tube, resulting in a change in capacitance; sometimes peeling occurs between the 0-layer electrode and the conductive tube, reducing the reliability of the electrical connection. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a RIP sleeve with a buffer layer structure, which can solve the problem of peeling between the wound 0-layer electrode and the conductive tube due to thermal expansion and contraction of the conductive tube, resulting in changes in electrode position and capacitance.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a RIP bushing with a buffer layer structure, the innovation of which is: comprising an insulator bushing, a capacitor core, a conductive tube, an end cover, an elastic buffer layer and a terminal;

[0005] An end cover is provided at the end of the insulator sleeve, and the end cover is connected to the insulator sleeve by bolts; a through hole for accommodating the wiring terminal is provided on the end cover; one end of the wiring terminal is placed in the insulator sleeve, and the other end of the wiring terminal passes through the through hole on the end cover and extends out of the outside of the insulator sleeve;

[0006] The conductive tube is placed in the insulator sleeve, and the end of the conductive tube extends to the inner wall close to the end cover; the axis of the conductive tube is coaxial with the through hole on the end cover for accommodating the wiring terminal to pass through; the end of the conductive tube is provided with a connecting hole for accommodating the wiring terminal to be embedded, and the connecting hole is electrically connected to the wiring terminal through a spring contact finger;

[0007] The circumferential outer contour of the conductive tube is wrapped with an elastic buffer layer, and the length of the elastic buffer layer is less than the length of the conductive tube; a plurality of tinned copper strips are arranged at the joints of the end of the elastic buffer layer and the conductive tube, and a part of the tinned copper strip is directly in close contact with the outer contour of the conductive tube, and another part of the tinned copper strip is overlapped on the outer contour of the elastic buffer layer; the outer side of the elastic buffer layer is wrapped with aluminum foil to form an O-layer electrode, and the end of the O-layer electrode is overlapped and connected with the part of the tinned copper strip overlapped on the elastic buffer layer to realize the electrical connection between the O-layer electrode and the conductive tube; a capacitor core is cast on the outer side of the O-layer electrode.

[0008] Furthermore, a groove for accommodating a spring contact finger is provided on the circumference of the outer wall of the wiring terminal embedded in the end of the conductive tube, and the spring contact finger is provided in the groove.

[0009] Furthermore, the elastic buffer layer is a rubber layer or a nylon layer.

[0010] The advantages of the present invention are:

[0011] 1) In the present invention, an elastic buffer layer is wrapped between the 0-layer electrode aluminum foil and the conductive tube, and a plurality of tinned copper strips are used at the end to electrically connect with the outer surface of the conductive tube; while ensuring that the 0-layer electrode aluminum foil shields the conductive tube and does not share the field strength of the capacitor core, it also ensures that the elastic buffer layer absorbs the deformation of the conductive tube when it expands and contracts due to heat, thereby ensuring that the position of the electrode remains unchanged; the 0-layer electrode aluminum foil is prevented from peeling off from the conductive tube due to thermal expansion, resulting in changes in capacitance and electrode position, thereby improving the reliability of the RIP sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a structural diagram of a RIP sleeve with a buffer layer structure according to the present invention.

[0014] Figure 2 It is a schematic diagram of the local structure of a RIP sleeve with a buffer layer structure according to the present invention. DETAILED DESCRIPTION

[0015] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0019] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 Figure 2 The RIP bushing with a buffer layer structure shown comprises an insulator bushing 1, a capacitor core 2, a conductive tube 3, an end cover plate 4, an elastic buffer layer 5 and a connection terminal 6.

[0022] An end cover plate 4 is provided at the end of the insulator sleeve 1, and the end cover plate 4 is connected to the insulator sleeve 1 by bolts; a through hole for accommodating a wiring terminal 6 is provided on the end cover plate 4; one end of the wiring terminal 6 is placed in the insulator sleeve 1, and the other end of the wiring terminal 6 extends out of the outside of the insulator sleeve 1 through the through hole on the end cover plate 4.

[0023] The conductive tube 3 is placed in the insulator sleeve, and the end of the conductive tube 3 extends to the inner wall close to the end cover 4; the axis of the conductive tube 3 is coaxial with the through hole on the end cover 4 for accommodating the wiring terminal 6 to pass through; the end of the conductive tube 3 is provided with a connecting hole for accommodating the wiring terminal 6 to be embedded, and the connecting hole and the wiring terminal 6 are electrically connected through a spring contact finger.

[0024] The circumferential outer contour of the conductive tube 3 is wrapped with an elastic buffer layer 5, and the length of the elastic buffer layer 5 is less than the length 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 joints of the end of the elastic buffer layer 5 and the conductive tube, and a part of the tinned copper strip 51 is directly in close contact with the outer contour of the conductive tube 3, and another part of the tinned copper strip 7 is overlapped on the outer contour of the elastic buffer layer 5; the outer side of the elastic buffer layer 5 is wrapped with aluminum foil to form an O-layer electrode 8, and the end of the O-layer electrode 8 overlaps with the part of the tinned copper strip 7 overlapped on the elastic buffer layer to realize the electrical connection between the O-layer electrode 8 and the conductive tube 3; the outer side of the O-layer electrode 8 is cast with a capacitor core 2.

[0025] A groove for accommodating a spring contact finger is arranged on the circumference of the outer wall of the connecting terminal 6 embedded in the end of the conductive tube 3 , and a spring contact finger is arranged in the groove to realize electrical connection between the connecting terminal 6 and the conductive tube 3 .

[0026] The working principle of the present invention is as follows: an elastic buffer layer is wrapped between the 0-layer electrode aluminum foil and the conductive tube, and a plurality of tinned copper strips are used at the end to electrically connect the conductive tube to the outer surface of the conductive tube; while ensuring that the 0-layer electrode aluminum foil shields the conductive tube and does not share the field strength of the capacitor core, it also ensures that the elastic buffer layer absorbs the deformation of the conductive tube when it expands and contracts due to heat, thereby ensuring that the position of the electrode remains unchanged; the 0-layer electrode aluminum foil is prevented from peeling off from the conductive tube due to thermal expansion, resulting in changes in capacitance and electrode position, thereby improving the reliability of the RIP sleeve.

[0027] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A RIP casing with a buffer layer structure, characterized in that: It includes an insulator bushing, a capacitor core, a conductive tube, an end cover, an elastic buffer layer and a terminal; An end cover is provided at the end of the insulator sleeve, and the end cover is connected to the insulator sleeve by bolts; a through hole for accommodating the wiring terminal is provided on the end cover; one end of the wiring terminal is placed in the insulator sleeve, and the other end of the wiring terminal passes through the through hole on the end cover and extends out of the outside of the insulator sleeve; The conductive tube is placed in the insulator sleeve, and the end of the conductive tube extends to the inner wall close to the end cover; the axis of the conductive tube is coaxial with the through hole on the end cover for accommodating the wiring terminal to pass through; the end of the conductive tube is provided with a connecting hole for accommodating the wiring terminal to be embedded, and the connecting hole is electrically connected to the wiring terminal through a spring contact finger; The circumferential outer contour of the conductive tube is wrapped with an elastic buffer layer, and the length of the elastic buffer layer is less than the length of the conductive tube; a plurality of tinned copper strips are arranged at the joints of the end of the elastic buffer layer and the conductive tube, and a part of the tinned copper strip is directly in close contact with the outer contour of the conductive tube, and another part of the tinned copper strip is overlapped on the outer contour of the elastic buffer layer; the outer side of the elastic buffer layer is wrapped with aluminum foil to form an O-layer electrode, and the end of the O-layer electrode is overlapped and connected with the part of the tinned copper strip overlapped on the elastic buffer layer to realize the electrical connection between the O-layer electrode and the conductive tube; a capacitor core is cast on the outer side of the O-layer electrode.

2. The RIP sleeve with a buffer layer structure according to claim 1, characterized in that: A groove for accommodating a spring contact finger is arranged on the circumference of the outer wall of the wiring terminal embedded in the end of the conductive tube, and the spring contact finger is arranged in the groove.

3. The RIP sleeve with a buffer layer structure according to claim 1, characterized in that: The elastic buffer layer is a rubber layer or a nylon layer.

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