GIS internal conductor structure and manufacturing method thereof

Abstract

The invention belongs to the technical field of power switch equipment, and particularly relates to a GIS internal conductor structure and a manufacturing method thereof. The GIS internal conductor structure comprises a GIS body in which three conductors are arranged, and is characterized in that the conductors are made of aluminum alloy pipes, a base is welded at the lower end of each conductor, a joint is welded at the upper end of each conductor, the base is connected with the lower end in the GIS body, and the joint is connected with a spring contact finger seat through a spring contact finger. The beneficial effects of the invention are that the weight of each conductor is reduced by about 50%, the overall weight of the equipment is greatly reduced, the installation, transportation and maintenance of the equipment are facilitated, and the cost is reduced at the same time. According to the utility model, the types of parts required for assembling the conductor are reduced, the overlapping surface of the conductor is reduced by more than half, the complexity and error probability of assembling are reduced, the possibility of large loop resistance caused by poor contact is effectively reduced, and the stability of equipment operation and the electric energy transmission efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power switchgear, and in particular relates to a GIS internal conductor structure and a manufacturing method thereof. Background Art

[0002] In gas-insulated metal-enclosed switchgear (GIS), internal conductors are key components that play a vital role in transmitting electrical energy. Traditionally, GIS internal conductors are manufactured using a casting process, which presents numerous drawbacks. For example, cast conductors are heavy, which not only increases the overall weight of the equipment, hindering installation and transportation, but also increases costs. Furthermore, the casting process is complex and results in low production efficiency. Furthermore, traditional cast conductors require a wide variety of parts for assembly, resulting in a large number of overlapping conductor surfaces and increased contact points. This can easily lead to high loop resistance due to poor contact, impacting normal equipment operation and power transmission efficiency. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a GIS internal conductor structure and a manufacturing method thereof that are light in weight, simple in structure, easy to assemble, and can effectively reduce the risk of excessively high loop resistance.

[0004] The present invention is achieved through the following technical solutions: A GIS internal conductor structure includes a GIS body with three conductors disposed therein. The structure is characterized in that the conductors are made of aluminum alloy tubes, a base is welded to the lower end of the conductor, and a joint is welded to the upper end of the conductor. The base is connected to the lower end of the GIS body, and the joint is connected to a spring contact finger seat via a spring contact finger.

[0005] A guide sleeve is provided between the joint and the spring contact finger.

[0006] A method for manufacturing an internal conductor of a GIS is characterized by comprising the following steps: (1) Place the aluminum alloy tube in a cold bending die and perform cold bending on the aluminum alloy tube through the cold bending die; (2) Weld the base and joints at both ends of the processed aluminum alloy elbow; (3) Place the conductors with the base and connectors welded into the silver plating solution for silver plating; (4) Transport the silver-plated conductor to the GIS equipment assembly workshop, connect the base to the lower conductor in the GIS body through bolts, and connect one end of the connector to the spring contact finger seat through the spring contact finger.

[0007] Preferably, in step (2), the material of the base and the joint is the same as that of the aluminum alloy tube.

[0008] Preferably, in step (3), before placing the conductor with the base and the connector welded thereto into the silver plating solution, the surface of the conductor with the base and the connector welded thereto is cleaned.

[0009] The beneficial effects of this invention are: the weight of each conductor is reduced by approximately 50%, significantly reducing the overall weight of the equipment, facilitating installation, transportation, and maintenance, while also lowering costs. The number of parts required for conductor assembly is reduced, and the conductor overlap area is reduced by more than half, reducing assembly complexity and the probability of errors. This effectively reduces the possibility of excessive loop resistance due to poor contact, and improves equipment operational stability and power transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Attachment Figure 1 This is a schematic diagram of the main structure of the present invention; Attachment Figure 2 It is a side structural schematic diagram of the present invention; In the figure, 1 is the GIS body, 2 is the conductor, 3 is the base, 4 is the connector, 5 is the spring contact finger, 6 is the spring contact finger seat, and 7 is the guide sleeve. DETAILED DESCRIPTION

[0012] The accompanying drawings illustrate a specific embodiment of the present invention. This embodiment includes a GIS body 1, which is equipped with three conductors 2. Conductors 2 are made of aluminum alloy tubes. A base 3 is welded to the lower end of each conductor 2, and a connector 4 is welded to the upper end of each conductor 2. Base 3 is connected to the lower end of the GIS body 1. Connector 4 is connected to a spring contact finger seat 6 via a spring contact finger 5. A guide sleeve 7 is provided between connector 4 and the spring contact finger 5.

[0013] The manufacturing method of the GIS internal conductor of the present invention comprises the following steps: 1. Conductor 2 Cold Bending: Select an aluminum alloy tube of appropriate specifications and place it in a specially designed cold bending die. Based on the required shape and size of Conductor 2, the die applies appropriate pressure to the aluminum alloy tube for cold bending, ensuring that the finished aluminum alloy tube meets the shape and size tolerances specified in the drawing.

[0014] 2. Welding the base 3 and joint 4: At each end of the processed aluminum alloy elbow, use the same welding materials as the aluminum alloy tube base material and a suitable welding process (such as argon arc welding) to weld the base 3 and joint 4 to each end of the elbow. Strictly control the welding parameters during the welding process to ensure complete fusion of the weld and the base material, thereby guaranteeing weld quality.

[0015] 3. Surface Silvering: After cleaning the surface of the conductor 2 to which the base 3 and connector 4 are soldered, place it in a silver plating solution for silver plating. Control parameters such as the silver plating time and solution concentration to ensure that the silver plating on the base 3 and connector 4 is uniform and that the silver plating thickness meets relevant standards.

[0016] 4. Assembly and connection: Transport the silver-plated conductor 2 to the GIS equipment assembly workshop, connect the welding base 3 to the other conductors inside the GIS body 1 with bolts, and ensure that the bolt tightening torque meets the requirements; connect one end of the connector 4 to the spring contact finger 5 and the spring contact finger seat 6. During the installation process, pay attention to check the reliability of the connection and the tightness of the contact.

[0017] The GIS internal conductor structure and manufacturing method of the present invention have the following advantages: Significant weight reduction: Compared with traditional casting, cold bending processing has the advantages of high processing precision, high material utilization rate and high processing efficiency. In addition, the aluminum alloy tube itself is light in weight, and the weight of each conductor is reduced by about 50%, which greatly reduces the overall weight of the equipment, facilitates the installation, transportation and maintenance of the equipment, and also reduces costs.

[0018] Stable and Reliable Performance: The base and connectors are welded with the same welding materials as the aluminum alloy tube base, ensuring complete fusion of the weld and base metal, ensuring excellent weld quality and improving the overall performance and stability of the conductor. The base and connector surfaces are silver-plated, which reduces contact resistance, improves conductivity and corrosion resistance, and further enhances the conductor's electrical performance.

[0019] Simple structure and easy assembly: The base is connected to the other conductors within the GIS body via bolts. This connection method is easy to install and remove, facilitating equipment maintenance and overhaul. Spring contacts provide excellent elastic contact performance, ensuring a reliable electrical connection. Fewer components are required for conductor assembly, and the conductor overlap area is reduced by more than half. This reduction in component count reduces assembly complexity and the potential for errors. The reduced overlap area effectively reduces the possibility of excessive loop resistance due to poor contact, thereby improving equipment operational stability and power transmission efficiency.

[0020] High dimensional accuracy: The conductor position and size strictly meet the tolerance range required by the drawing, which makes the product easier to assemble, reduces assembly problems caused by dimensional deviation, and improves assembly efficiency and quality.

Claims

1. A GIS internal conductor structure, comprising a GIS body (1), wherein three conductors (2) are provided in the GIS body (1), and wherein: The conductor (2) is made of an aluminum alloy tube, a base (3) is welded to the lower end of the conductor (2), a joint (4) is welded to the upper end of the conductor (2), the base (3) is connected to the lower end of the interior of the GIS body (1), and the joint (4) is connected to the spring contact finger seat (6) via a spring contact finger (5).

2. The GIS internal conductor structure according to claim 1, characterized in that: A guide sleeve (7) is provided between the joint (4) and the spring contact finger (5).

3. The method for manufacturing a GIS internal conductor structure according to any one of claims 1 to 2, characterized in that: The following steps are involved: (1) Place the aluminum alloy tube in a cold bending die and perform cold bending on the aluminum alloy tube through the cold bending die; (2) Welding the base (3) and the joint (4) to the two ends of the processed aluminum alloy elbow; (3) placing the conductor (2) with the base (3) and the connector (4) welded thereto into a silver plating solution for silver plating; (4) The silver-plated conductor (2) is transported to the GIS equipment assembly workshop, the base (3) is connected to the lower conductor inside the GIS body (1) through bolts, and one end of the connector (4) is connected to the spring contact finger (5) and the spring contact finger seat (6).

4. The manufacturing method according to claim 3, wherein: In step (2), the material of the base (3) and the joint (4) is the same as that of the aluminum alloy tube.

5. The manufacturing method according to claim 3, wherein: In step (3), before placing the conductor (2) having the base (3) and the connector (4) welded thereto into a silver plating solution, the surface of the conductor (2) having the base (3) and the connector (4) welded thereto is cleaned.

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