Capacitor insulation module

Abstract

An embodiment of the utility model provides a capacitor insulation module which comprises a cylindrical conductor, a coating layer is coated outside the cylindrical conductor, two ends of the cylindrical conductor extend to the outside of the coating layer, a plurality of ceramic capacitor measuring elements are arranged in the coating layer, and the ceramic capacitor measuring elements are arranged in the cylindrical conductor. A ceramic capacitance measuring element is arranged in the coating layer, a fixing assembly used for stabilizing the ceramic capacitance measuring element is arranged in the coating layer, the ceramic capacitance measuring element is electrically connected with a wire, the ceramic capacitance measuring element is electrically connected with the fixing assembly, and one end of the wire extends out of the coating layer. According to the capacitor insulation module provided by the utility model, the shielding net and the coating layer are arranged, so that the ceramic capacitance measuring element and the cylindrical conductor form firm connection, and the ceramic capacitance measuring element can be stably and additionally arranged around the high-voltage conductor, thereby effectively preventing the ceramic capacitance measuring element from shifting when being impacted in a manufacturing process (during epoxy resin injection).

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to a capacitor insulation module. Background Art

[0002] In the power distribution network system, the pole switch is a very important component of the distribution network system. The insulation performance of the capacitor insulation module seriously affects the insulation life of the whole set.

[0003] The current development trend of pole switches is miniaturization and intelligence. The purpose of setting up a capacitor insulation module with a ceramic capacitor measuring element is to increase and expand the use function of the capacitor insulation module, thereby reducing the installation and configuration of external ceramic capacitor measuring elements, and thus realizing the miniaturization and functional integration of pole switches. When adding a ceramic capacitor measuring element to the capacitor insulation module, it is necessary to connect a high voltage and also to connect to a low voltage analysis and control system.

[0004] Generally, high-voltage conductors are made of hard metal, so they are relatively rigid, which is not conducive to soldering and epoxy shrinkage. Most of the existing ceramic capacitor measuring elements are connected to the high-voltage conductor by screws, and their shrinkage stress is large. They are easy to shift during the manufacturing process (APG epoxy injection or vacuum casting), which affects the insulation performance of the product. Utility Model Content

[0005] In view of the above problems existing in the prior art, an object of the embodiments of the present utility model is to provide a capacitor insulation module.

[0006] The technical solution adopted in the embodiment of the utility model is a capacitor insulation module, comprising: a columnar conductor, the outside of the columnar conductor is coated with a coating layer, and both ends of the columnar conductor extend to the outside of the coating layer, a plurality of ceramic capacitor measuring elements are arranged in the coating layer, and a fixing component for stabilizing the ceramic capacitor measuring elements is arranged in the coating layer, the ceramic capacitor measuring element is electrically connected to a wire, and the ceramic capacitor measuring element is electrically connected to the fixing component, and one end of the wire extends to the outside of the coating layer.

[0007] Furthermore, the fixing component includes a shielding net, which is placed in the covering layer and has a cylindrical structure. The shielding net is sleeved on the columnar conductor, and the ceramic capacitance measuring element is fixed on a side of the shielding net away from the columnar conductor.

[0008] Furthermore, the fixing assembly also includes a positioning screw, the shielding net is provided with a positioning hole that cooperates with the positioning screw, the columnar conductor is provided with a screw hole that cooperates with the positioning screw, the positioning screw is inserted into the positioning hole, and one end of the positioning screw is screwed into the screw hole.

[0009] Furthermore, the mesh of the shielding net is set to be a diamond mesh, and the mesh density of the shielding net is greater than or equal to 40 meshes.

[0010] Furthermore, the ceramic capacitance measuring element is fixedly connected to the shielding net by soldering, and the ceramic capacitance measuring element is electrically connected to the shielding net by soldering.

[0011] Furthermore, at least one end of the columnar conductor has an outer wall formed with an external thread.

[0012] Furthermore, an annular protrusion is configured on the circumferential outer wall of at least one end of the columnar conductor, and the upper surface of the annular protrusion is inclined inwardly along the axial direction.

[0013] Compared with the prior art, the capacitor insulation module proposed in the utility model forms a firm connection between the ceramic capacitor measuring element and the columnar conductor by setting a shielding net and a coating layer, and can be stably installed around the high-voltage conductor, effectively avoiding displacement due to impact during the manufacturing process (when injecting epoxy resin).

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention.

[0015] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the utility model. When appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present device or method.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the capacitor insulation module of the embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the capacitor insulation module of the embodiment of the utility model;

[0019] Figure 3 It is a front view of the capacitor insulation module of the embodiment of the utility model;

[0020] Figure 4 for Figure 3 Sectional view along the middle edge of FF. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0024] See also Figures 1 to 4, the utility model embodiment provides a capacitor insulation module for APG injection molding deep fusion pole, which includes: a columnar conductor 1, the outer part of the columnar conductor 1 is coated with a coating layer 5, and both ends of the columnar conductor 1 extend to the outside of the coating layer 5, a plurality of ceramic capacitance measuring elements 4 are arranged in the coating layer 5, and a fixing component for stabilizing the ceramic capacitance measuring element 4 is arranged in the coating layer 5, and a wire 6 is electrically connected to the ceramic capacitance measuring element 4, and the ceramic capacitance measuring element 4 is electrically connected to the fixing component, and one end of the wire 6 extends to the outside of the coating layer 5. In this embodiment, the coating layer 5 is composed of epoxy resin, and the coating layer 5 effectively improves the position stability between the columnar conductor 1 and the ceramic capacitance measuring element 4 by coating the columnar conductor 1 and the ceramic capacitance measuring element 4, and avoids displacement during epoxy injection. The ceramic capacitance measuring elements 4 are evenly distributed along the circumference of the columnar conductor 1. Further, the ceramic capacitance measuring elements 4 are distributed in the plane where the same radial direction of the columnar conductor 1 is located.

[0025] The fixed component includes a shielding net 3, which is placed in the coating layer 5 and is cylindrical in structure. The shielding net 3 is sleeved on the columnar conductor 1, and the ceramic capacitance measuring element 4 is fixed on the shielding net 3 on a side away from the columnar conductor 1. The ceramic capacitance measuring element 4 is electrically connected to the shielding net 3 and an external device, respectively. The external device is an external measurement and analysis device.

[0026] The ceramic capacitance measuring element 4 is fixedly connected to the shielding net 3 by soldering, and the ceramic capacitance measuring element 4 is electrically connected to the shielding net 3 by soldering. Through the synergistic effect of the welding method and the coating method, the positional relationship between the ceramic capacitance measuring element 4 and the columnar conductor 1 is further stabilized.

[0027] The edges at both ends of the shielding net 3 are configured as an inwardly rolled structure. This arrangement avoids the phenomenon of charge accumulation at the edges at both ends of the shielding net 3.

[0028] The fixing assembly further includes a positioning screw 2, a positioning hole for cooperating with the positioning screw 2 is provided on the shielding net 3, a screw hole 7 for cooperating with the positioning screw 2 is provided on the columnar conductor 1, the positioning screw 2 is inserted into the positioning hole, and one end of the positioning screw 2 is screwed into the screw hole 7. The positioning hole provided on the shielding net 3 is not shown in the figure, and the positioning hole corresponds to the position of the screw hole on the circumference of the columnar conductor 1; the screw 2 passes through the positioning hole and is screwed into the screw hole, so that the shielding net 3 and the columnar conductor 1 are fixedly connected.

[0029] The mesh of the shielding net 3 is set as a diamond mesh, and the mesh density of the shielding net 3 is greater than or equal to 40 meshes, so that it has a certain toughness while meeting the mechanical strength requirements, can effectively avoid the influence of pores when combined with epoxy resin, and reduce stress concentration during the curing process of epoxy resin.

[0030] An external thread is constructed on the outer wall of at least one end of the columnar conductor 1. In this embodiment, the peripheral surface of the upper end of the columnar conductor 1 is provided with an external thread, and the columnar conductor 1 is connected to the high voltage conductor through the external thread.

[0031] The cylindrical conductor 1 has an annular protrusion on its circumferential outer wall at least at one end, and the upper surface of the annular protrusion is inclined inwardly along the axial direction. In this embodiment, an annular protrusion is provided at the lower end of the cylindrical conductor 1 and around its circumference; the upper surface of the annular protrusion is inclined inwardly along the axial direction for APG (epoxy injection molding) exhaust.

[0032] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A capacitor insulation module, comprising: A columnar conductor (1), characterized in that the columnar conductor (1) is coated with a coating layer (5) on the outside, and both ends of the columnar conductor (1) extend to the outside of the coating layer (5), a plurality of ceramic capacitance measuring elements (4) are arranged in the coating layer (5), and a fixing component for fixing the ceramic capacitance measuring elements (4) is arranged in the coating layer (5), the ceramic capacitance measuring elements (4) are electrically connected to a wire (6), and the ceramic capacitance measuring elements (4) are electrically connected to the fixing component, and one end of the wire (6) extends to the outside of the coating layer (5).

2. A capacitor insulation module according to claim 1, characterized in that: The fixed component comprises a shielding net (3), the shielding net (3) is placed in a covering layer (5), and the shielding net (3) is cylindrical in structure. The shielding net (3) is sleeved on a columnar conductor (1), and the ceramic capacitance measuring element (4) is fixed on a side of the shielding net (3) away from the columnar conductor (1).

3. A capacitor insulation module according to claim 2, characterized in that: The fixing assembly also includes a positioning screw (2), a positioning hole that cooperates with the positioning screw (2) is opened on the shielding net (3), a screw hole (7) that cooperates with the positioning screw (2) is opened on the columnar conductor (1), the positioning screw (2) is inserted into the positioning hole, and one end of the positioning screw (2) is screwed into the screw hole (7).

4. A capacitor insulation module according to claim 2 or 3, characterized in that: The meshes of the shielding net (3) are arranged as diamond meshes, and the mesh density of the shielding net (3) is greater than or equal to 40 meshes.

5. A capacitor insulation module according to claim 3, characterized in that: The ceramic capacitance measuring element (4) is fixedly connected to the shielding net (3) by soldering, and the ceramic capacitance measuring element (4) forms an electrical connection with the shielding net (3) by soldering.

6. The capacitor insulation module according to claim 1, characterized in that: An external thread is formed on the outer wall of at least one end of the columnar conductor (1).

7. The capacitor insulation module according to claim 1, characterized in that: An annular protrusion is formed on the circumferential outer wall of at least one end of the columnar conductor (1), and the upper surface of the annular protrusion is inclined inwardly along the axial direction.

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