Incoming and outgoing line insulating sleeve structure and processing method thereof

Abstract

The invention relates to the technical field of electrical elements, in particular to an incoming and outgoing line insulating sleeve structure and a processing method thereof. According to the technical scheme, the device comprises an insulating inner sleeve, a shielding ring, an electricity testing bolt, a conducting rod and an insulating outer sleeve, the shielding ring and the electricity testing bolt are integrally formed with the insulating inner sleeve in an engineering plastic casting forming mode to form a semi-formed body, and the conducting rod and the semi-formed body are integrally formed with the insulating outer sleeve in an engineering plastic casting forming mode; the insulating outer sleeve wraps the inner side and the outer side of the insulating inner sleeve, and the conducting rod is embedded in the center of the inner side of the insulating outer sleeve. The beneficial effects are that the structure of the insulating sleeve is set to be a structure in which the insulating inner sleeve and the insulating outer sleeve are nested, and the insulating inner sleeve and the insulating outer sleeve are respectively molded by adopting a mode of two times of engineering plastic casting molding, so that the application of engineering plastic in the incoming and outgoing line insulating sleeve is realized; and the quality and the application range of the incoming and outgoing line insulating sleeve are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical components, and in particular to an inlet and outlet line insulating sleeve structure and a processing method thereof. Background Art

[0002] With the continuous progress of the electric power industry, the voltage level of the power grid is constantly increasing, and the requirements for the insulation performance of electrical equipment are becoming increasingly stringent. As a key component in electrical equipment that connects the wires to the main body of the equipment and ensures the safe transmission of current, the insulation performance of the inlet and outlet insulation sleeves is directly related to the safe and stable operation of the power system. Since the inlet and outlet insulation sleeves need to embed metal accessories such as shielding rings, test bolts, and conductive rods into the insulation sleeves, in order to facilitate processing, the insulation materials in the inlet and outlet insulation sleeves are mostly made of epoxy resin materials and are made by one-time casting through a mold. However, epoxy resin has problems such as poor weather resistance, high brittleness, and limited heat resistance. Its scope of application is limited and it is difficult to meet market demand. Engineering plastics are a type of plastic with good comprehensive properties. They include multiple categories, all of which have the advantages of high rigidity, low creep, high mechanical strength, good heat resistance, good electrical insulation, and can be used for a long time in harsh chemical and physical environments. They can replace metals as engineering structural materials. However, engineering plastics are more difficult to process than epoxy resins. They cannot be integrated with metal accessories such as shielding rings, electrical test bolts, and conductive rods through a one-time casting method like epoxy resins. If conventional injection molding and splicing methods are used, the insulation performance requirements of the inlet and outlet insulating sleeves cannot be met from a structural point of view. Summary of the invention

[0003] The object of the present invention is to provide an inlet and outlet line insulating sleeve structure and a processing method thereof, and specifically provide an inlet and outlet line insulating sleeve structure and a corresponding processing method thereof, which uses engineering plastic as the insulating material of the insulating sleeve and is obtained by two-time casting molding, and has the advantages of good insulation performance and a wide range of applications.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an inlet and outlet line insulating sleeve structure, comprising an insulating inner sleeve, a shielding ring, an electrical test bolt, a conductive rod and an insulating outer sleeve, wherein the insulating inner sleeve and the insulating outer sleeve are both made of engineering plastic materials; the shielding ring and the electrical test bolt are integrally formed with the insulating inner sleeve by means of engineering plastic casting to form a semi-molded body, and the conductive rod and the semi-molded body are integrally formed with the insulating outer sleeve by means of engineering plastic casting; the electrical test bolt is vertically arranged on the outside of the shielding ring, the shielding ring is embedded in the outside of the insulating inner sleeve, the insulating outer sleeve covers the inside and outside of the insulating inner sleeve, and the conductive rod is embedded in the inner center of the insulating outer sleeve.

[0005] Specifically, the inner side of the insulating inner sleeve is gear-shaped.

[0006] Specifically, a first limit key structure is arranged in the middle of the conductive rod.

[0007] Specifically, a second limit key structure is arranged in the middle of the electrical testing bolt.

[0008] A processing method for the above-mentioned inlet and outlet line insulating sleeve structure includes the following steps: first, fixing the test bolt and the shielding ring in a first casting mold to cast the insulating inner sleeve, so that the insulating inner sleeve, the test bolt and the shielding ring are integrally formed into a semi-molded body; then fixing the semi-molded body and the conductive rod in a second casting mold to cast the insulating outer sleeve, so that the insulating outer sleeve covers the inner and outer sides of the insulating inner sleeve and is integrally connected with the conductive rod at the center position, thereby realizing the processing and forming of the inlet and outlet line insulating sleeves.

[0009] The beneficial effects of the present invention are as follows: by setting the insulating sleeve structure as a structure in which an insulating inner sleeve and an insulating outer sleeve are nested, and adopting two engineering plastic casting molding methods to respectively mold the insulating inner sleeve and the insulating outer sleeve, the electrical testing bolt, the shielding ring and the conductive rod are integrally connected with the insulating inner sleeve and the insulating outer sleeve, thereby realizing the application of engineering plastics in the insulating sleeves of incoming and outgoing lines, and improving the quality and application scope of the insulating sleeves of incoming and outgoing lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 The overall structure diagram of the semi-molded body in the embodiment; Attached Figure 2 It is a schematic diagram of the side cross-sectional structure of the semi-formed body in the embodiment; Attached Figure 3 It is an overall stereogram of the inlet and outlet insulating sleeve structure in the embodiment; Attached Figure 4 It is a schematic diagram of the side cross-sectional structure of the inlet and outlet insulation sleeve structure in the embodiment; Attached Figure 5 For attachment Figure 4 Sectional view of the middle BB; Attached Figure 6 This is a schematic diagram of the structure of the connection between the inlet and outlet insulating sleeves and the pressing plate in the embodiment; Attached Figure 7 It is a schematic diagram of the structure of the connection between the inlet and outlet insulating sleeves, the gas filling cabinet and the cable in the embodiment. DETAILED DESCRIPTION

[0011] Example 1, reference Figure 1-5, an inlet and outlet line insulating sleeve structure, comprising an insulating inner sleeve 1, a shielding ring 2, an electrical test bolt 3, a conductive rod 4 and an insulating outer sleeve 5, wherein the insulating inner sleeve 1 and the insulating outer sleeve 5 are both made of engineering plastic materials; the shielding ring 2 and the electrical test bolt 3 are integrally formed with the insulating inner sleeve 1 by means of engineering plastic casting to form a semi-molded body, and the conductive rod 4 and the semi-molded body are integrally formed with the insulating outer sleeve 5 by means of engineering plastic casting; the electrical test bolt 3 is vertically arranged on the outside of the shielding ring 2, the shielding ring 2 is embedded in the outside of the insulating inner sleeve 1, the insulating outer sleeve 5 is covered on the inside and outside of the insulating inner sleeve 1, and the conductive rod 4 is embedded in the inner center of the insulating outer sleeve 5.

[0012] In this embodiment, the test bolt 3 and the shielding ring 2 are first integrally connected with the insulating inner sleeve 1 by the first casting molding to form a semi-molded body, and then the semi-molded body and the conductive rod 4 are integrally connected with the insulating outer sleeve 5 by the second casting molding, wherein the insulating outer sleeve 5 is coated on the inner and outer sides of the insulating inner sleeve 1, so that the obtained inlet and outlet insulating sleeves have good mechanical strength. At the same time, the insulating inner sleeve 1 and the insulating outer sleeve 5 are made of engineering plastic materials, which effectively improves the insulation performance, mechanical strength and corrosion resistance of the inlet and outlet insulating sleeves. In this embodiment, refer to Figure 6-7 In the actual use of the inlet and outlet insulating sleeves, the outer end of the conductive rod 4 is used to connect with the cable connector, and the inner end of the conductive rod 4 is used to be inserted into the interior of the gas cabinet 10 and connected with the copper bar. When installing the inlet and outlet insulating sleeves, first clamp the pressure plate 11 on the insulating outer sleeve 5 and insert it into the interface of the gas cabinet 10. The interface of the gas cabinet 10 is provided with a sealing ring to seal the inlet and outlet insulating sleeves. The pressure plate 11 is fixedly connected with the bolt column 13 on the gas cabinet 10 through the fixing bolt 12 to fix the inlet and outlet insulating sleeves axially, and the end exposed outside the gas cabinet 10 is connected to the cable 14. Among them, in order to ensure a stable connection between the insulating inner sleeve 1 and the insulating outer sleeve 5 and improve the circumferential strength of the inlet and outlet insulating sleeves, the inner side of the insulating inner sleeve 1 is gear-shaped. At the same time, in order to make the connection between the conductive rod 4 and the test bolt 3 and the insulating outer sleeve 5 more stable, a first limit key structure 41 is provided in the middle of the conductive rod 4, and a second limit key structure 31 is provided in the middle of the test bolt 3. By respectively providing the first limit key structure 41 and the second limit key structure 31 in the middle of the conductive rod 4 and the test bolt 3, good axial and circumferential limiting effects can be provided for the conductive rod 4 and the test bolt 3, thereby improving the stability of the connection with the insulating outer sleeve 5.

[0013] Correspondingly, the present embodiment also provides a processing method for the above-mentioned inlet and outlet line insulating sleeve structure, comprising the following steps: first, fix the test bolt 3 and the shielding ring 2 in a first casting mold to perform casting molding of the insulating inner sleeve 1, so that the insulating inner sleeve 1, the test bolt 3 and the shielding ring 2 are integrally formed into a semi-molded body; then fix the semi-molded body and the conductive rod 4 in a second casting mold to perform casting molding of the insulating outer sleeve 5, so that the insulating outer sleeve 5 covers the inner and outer sides of the insulating inner sleeve 1 and is integrally connected with the conductive rod 4 at the center position, thereby realizing the processing and molding of the inlet and outlet line insulating sleeves.

[0014] Of course, the above are only preferred embodiments of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes made to the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An inlet and outlet insulating sleeve structure, characterized in that: It includes an insulating inner sleeve, a shielding ring, an electrical test bolt, a conductive rod and an insulating outer sleeve, wherein the insulating inner sleeve and the insulating outer sleeve are both made of engineering plastics; the shielding ring and the electrical test bolt are integrally formed with the insulating inner sleeve by means of engineering plastic casting to form a semi-molded body, and the conductive rod and the semi-molded body are integrally formed with the insulating outer sleeve by means of engineering plastic casting; the electrical test bolt is vertically arranged on the outside of the shielding ring, the shielding ring is embedded in the outside of the insulating inner sleeve, the insulating outer sleeve covers the inside and outside of the insulating inner sleeve, and the conductive rod is embedded in the inner center of the insulating outer sleeve.

2. The inlet and outlet insulating sleeve structure according to claim 1, characterized in that: The inner side of the insulating inner sleeve is gear-shaped.

3. The inlet and outlet insulating sleeve structure according to claim 1, characterized in that: A first limiting key structure is arranged in the middle of the conductive rod.

4. The inlet and outlet insulating sleeve structure according to claim 1, characterized in that: A second limit key structure is arranged in the middle of the electrical testing bolt.

5. A method for processing an inlet and outlet insulating sleeve structure according to any one of claims 1 to 4, characterized in that: First, fix the test bolt and the shielding ring in the first casting mold for casting and molding of the insulating inner sleeve, so that the insulating inner sleeve, the test bolt and the shielding ring are integrally formed into a semi-molded body; then fix the semi-molded body and the conductive rod in the second casting mold for casting and molding of the insulating outer sleeve, so that the insulating outer sleeve covers the inner and outer sides of the insulating inner sleeve and is integrally connected with the conductive rod at the center position, thereby realizing the processing and molding of the insulating sleeves of the incoming and outgoing lines.

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