A GIS outgoing sleeve

Abstract

This invention discloses a GIS outgoing bushing, comprising a head assembly, a conductive tube, an insulating core, a hollow composite insulator, a middle flange, and a tail assembly. The two ends of the conductive tube are electrically connected to the head assembly and the tail assembly, respectively. The insulating core is sleeved outside the conductive tube, with one end connected to the tail assembly. The hollow composite insulator is sleeved outside the conductive tube and the insulating core, with one end connected to the head assembly and the other end connected to the middle flange, which is sleeved outside the insulating core. The GIS outgoing bushing disclosed in this invention uses the insulating core as the main insulation, which can significantly reduce greenhouse gas emissions throughout its entire life cycle of production and use, resulting in better environmental performance. Furthermore, by using the insulating core as the main insulation, this invention is applicable to a temperature range of -60℃ to 120℃, offering a wider applicable temperature range, and its insulation performance in low-temperature environments is superior to outgoing bushings with SF6 gas as the main insulation.

Description

Technical Field

[0001] This invention relates to the field of high voltage insulation technology, and more specifically, to a GIS outgoing bushing. Background Technology

[0002] As a key component of gas-insulated switchgear (GIS), the outgoing bushing plays a crucial role in connecting the power grid and substations, and is hailed as the "lifeline" of the power system. Its technical level and quality directly affect the stability and reliability of the power grid. For a long time, GIS outgoing bushings have primarily relied on SF6 gas as the insulating medium to achieve high-voltage insulation. However, with increasing environmental awareness, the use of SF6, a potent greenhouse gas, has faced growing restrictions. Therefore, exploring green and environmentally friendly alternatives for GIS outgoing bushings has become a pressing technical problem for those skilled in the art. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a GIS outgoing bushing to achieve an environmentally friendly solution for GIS outgoing bushings.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A GIS outgoing bushing includes a head assembly, a conductive tube, an insulating core, a hollow composite insulator, a middle flange, and a tail assembly;

[0006] The two ends of the conductive tube are electrically connected to the head assembly and the tail assembly, respectively.

[0007] The insulating core is sleeved outside the conductive tube, and one end is connected to the tail assembly;

[0008] The hollow composite insulator is sleeved on the conductive tube and the insulating core, with one end connected to the head assembly and the other end connected to the middle flange, which is sleeved on the insulating core.

[0009] Optionally, in the above-mentioned GIS outgoing bushing, the head assembly is threadedly connected to the conductive pipe.

[0010] Optionally, in the above-mentioned GIS outgoing bushing, the head assembly includes an elastic component, a conductive sealing head, and a first current-carrying strap;

[0011] The first current-carrying strap is disposed at one end of the conductive tube and is electrically connected to the conductive sealing head;

[0012] The conductive sealing head is connected to the elastic component;

[0013] The elastic component is connected to the hollow composite insulator and threadedly connected to the conductive tube, for pushing the conductive tube in the direction of the conductive sealing head.

[0014] Optionally, in the above-mentioned GIS outgoing bushing, the resilient component includes:

[0015] The mounting base is connected to the conductive sealing head and the hollow composite insulator;

[0016] A spring pressure plate is fitted onto the conductive tube and threadedly connected to the conductive tube.

[0017] A connecting screw, the two ends of which are respectively connected to the mounting base and the spring pressure plate;

[0018] A spring is sleeved on the connecting screw, and its two ends abut against the spring pressure plate and the mounting base, respectively.

[0019] Optionally, in the above-mentioned GIS outgoing bushing, the mounting base is bolted to the hollow composite insulator;

[0020] The mounting base is connected to the conductive sealing head by screws.

[0021] Optionally, in the above-mentioned GIS outgoing bushing, the tail assembly includes:

[0022] The terminal block has a second current-carrying strip at its first end, which is electrically connected to the conductive tube. The terminal block also has a third current-carrying strip at its second end, which is used to connect to the tube socket for current carrying.

[0023] The base is connected to the wiring terminal and the insulating core.

[0024] Optionally, in the above-mentioned GIS outgoing bushing, the terminal block is connected to the base by screws.

[0025] Optionally, in the above-mentioned GIS outgoing bushing, the base is threadedly connected to the insulating core.

[0026] Optionally, in the above-mentioned GIS outgoing bushing, the central flange is bolted to the hollow composite insulator.

[0027] Optionally, in the above-mentioned GIS outgoing bushing, a boss structure is provided on the outer wall of the insulating core, and the middle flange is positioned and engaged with the insulating core through the boss structure.

[0028] The GIS outgoing bushing provided by the present invention includes a head assembly, a conductive tube, an insulating core, a hollow composite insulator, a middle flange, and a tail assembly; the two ends of the conductive tube are electrically connected to the head assembly and the tail assembly, respectively; the insulating core is sleeved outside the conductive tube, and one end is connected to the tail assembly; the hollow composite insulator is sleeved outside the conductive tube and the insulating core, and one end is connected to the head assembly, and the other end is connected to the middle flange, which is sleeved outside the insulating core.

[0029] Compared to existing technologies, the GIS outgoing bushing provided by this invention uses an insulating core as the main insulation, which can greatly reduce greenhouse gas emissions throughout its entire production and use life cycle. It has better environmental performance than outgoing bushings that use SF6 gas as the main insulation. By using an insulating core as the main insulation, this invention can be used in a temperature range of -60℃ to 120℃, which is a wider applicable temperature range. Moreover, its insulation performance is better than that of outgoing bushings with SF6 gas as the main insulation in low-temperature environments. Attached Figure Description

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the overall structure of the GIS outgoing bushing disclosed in an embodiment of the present invention;

[0032] Figure 2 This is a partial structural diagram of the GIS outgoing bushing disclosed in an embodiment of the present invention. Figure 1 ;

[0033] Figure 3 This is a partial structural diagram of the GIS outgoing bushing disclosed in an embodiment of the present invention. Figure 2 ;

[0034] Figure 4 This is a partial structural diagram of the GIS outgoing bushing disclosed in an embodiment of the present invention. Figure 3 ;

[0035] Figure 5 This is a partial structural schematic diagram of the insulating core disclosed in an embodiment of the present invention.

[0036] Among them, 100 is the head assembly, 110 is the conductive sealing head, 120 is the first current-carrying gauge band, 130 is the elastic component, 131 is the connecting nut, 132 is the spring pressure plate, 133 is the connecting screw, 134 is the spring, 135 is the mounting base, 200 is the conductive tube, 300 is the hollow composite insulator, 400 is the insulating core, 410 is the insulating medium, 420 is the capacitor screen, 430 is the rolled tube, 500 is the middle flange, 600 is the tail assembly, 610 is the base, 620 is the terminal block, 621 is the second current-carrying gauge band, and 622 is the third current-carrying gauge band. Detailed Implementation

[0037] The core of this invention lies in disclosing a GIS outgoing sleeve to achieve an environmentally friendly solution for GIS outgoing sleeves.

[0038] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the invention as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the invention as described in the claims. It should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings. Unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0039] Combination Figure 1-Figure 5 The GIS outgoing bushing disclosed in this invention includes a head assembly 100, a conductive tube 200, an insulating core 400, a hollow composite insulator 300, a middle flange 500, and a tail assembly 600. The two ends of the conductive tube 200 are electrically connected to the head assembly 100 and the tail assembly 600, respectively. The insulating core 400 is sleeved outside the conductive tube 200, and one end is connected to the tail assembly 600. The hollow composite insulator 300 is sleeved outside the conductive tube 200 and the insulating core 400, and one end is connected to the head assembly 100, while the other end is connected to the middle flange 500. The middle flange 500 is sleeved outside the insulating core 400.

[0040] Compared to existing technologies, the GIS outgoing bushing disclosed in this invention uses an insulating core 400 as the main insulation, which can greatly reduce greenhouse gas emissions throughout its entire production and use life cycle. It has better environmental performance than outgoing bushings that use SF6 gas as the main insulation. By using an insulating core 400 as the main insulation, this invention can be used in a temperature range of -60℃ to 120℃, which is a wider applicable temperature range. Moreover, its insulation performance is better than that of outgoing bushings with SF6 gas as the main insulation in low-temperature environments.

[0041] The insulating core 400 includes an insulating medium 410, a capacitor screen 420, and a wound tube 430, forming a capacitive voltage divider structure to achieve insulation from the ground potential at a high potential. For example, the insulating medium 410 can be epoxy resin, ceramic material, polyimide film, polypropylene film, polyester film, etc. The specific structure and operating mechanism of the insulating core 400 are existing technologies and will not be described in detail here.

[0042] Specifically, the head assembly 100 and the conductive tube 200 can be threaded together.

[0043] In a specific embodiment of the present invention, the head assembly 100 includes an elastic component 130, a conductive sealing head 110, and a first current-carrying strap 120; the first current-carrying strap 120 is disposed at one end of the conductive tube 200 and electrically connected to the conductive sealing head 110; the conductive sealing head 110 is connected to the elastic component 130; the elastic component 130 is connected to the hollow composite insulator 300 and threadedly connected to the conductive tube 200, for pushing the conductive tube 200 in the direction of the conductive sealing head 110, so that a reliable electrical connection is made between the conductive sealing head 110 and the conductive tube 200, reducing the displacement caused by external loads and improving the system stiffness.

[0044] In one embodiment, combined with Figure 2 The elastic component 130 includes a mounting base 135, a spring pressure plate 132, a connecting screw 133, and a spring 134. The mounting base 135 is connected to the conductive sealing head 110 and the hollow composite insulator 300. The spring pressure plate 132 is sleeved on the conductive tube 200 and threadedly connected to the conductive tube 200. The two ends of the connecting screw 133 are respectively connected to the mounting base 135 and the spring pressure plate 132. The spring 134 is sleeved on the connecting screw 133, and its two ends abut against the spring pressure plate 132 and the mounting base 135 respectively. It can apply a pushing force to the spring pressure plate 132 through the mounting base 135, thereby driving the conductive tube 200 to move in the direction of the conductive sealing head 110. The connecting screw 133 can be a double-ended screw, with one end threadedly connected to the mounting base 135 and the other end fixed to the spring pressure plate 132 through a connecting nut 131. Mounting base 135 can be bolted to hollow composite insulator 300, and mounting base 135 can be connected to conductive sealing head 110 by screws.

[0045] In a specific embodiment disclosed in this invention, combined with Figure 4 The tail assembly 600 includes a terminal block 620 and a base 610. The first end of the terminal block 620 is provided with a second current-carrying strip 621, which is electrically connected to the conductive tube 200. The second end of the terminal block 620 is provided with a third current-carrying strip 622, which is used to connect to the tube socket for current carrying. The base 610 is connected to the terminal block 620 and the insulating core 400.

[0046] Specifically, the terminal block 620 and the base 610 can be connected by screws, and the base 610 and the insulating core 400 can be connected by threads or screws. The structure is simple and easy to install.

[0047] Combination Figure 3 In some embodiments, the central flange 500 and the hollow composite insulator 300 are bolted together, resulting in a simple structure and convenient installation. Furthermore, combined with... Figure 3 The outer wall of the insulating core 400 is provided with a boss structure, and the central flange 500 is positioned and snapped into the insulating core 400 through the boss structure to ensure assembly accuracy. The central flange 500 of this invention is used to connect to the wall, so that this invention can be used as an environmentally friendly through-wall bushing structure for DC transmission systems.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Specific technical means in some embodiments may be incorporated, in whole or in part, into another embodiment without being explicitly excluded by another embodiment. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A GIS outgoing sleeve, characterized in that, It includes the head assembly, conductive tube, insulating core, hollow composite insulator, middle flange, and tail assembly; The two ends of the conductive tube are electrically connected to the head assembly and the tail assembly, respectively. The insulating core is sleeved outside the conductive tube, and one end is connected to the tail assembly; The hollow composite insulator is sleeved on the conductive tube and the insulating core, with one end connected to the head assembly and the other end connected to the middle flange, which is sleeved on the insulating core. The head assembly is threadedly connected to the conductive tube; the head assembly includes an elastic component, a conductive sealing head, and a first current-carrying strap; the first current-carrying strap is disposed at one end of the conductive tube and electrically connected to the conductive sealing head; the conductive sealing head is connected to the elastic component; the elastic component is connected to the hollow composite insulator and threadedly connected to the conductive tube, for pushing the conductive tube in the direction of the conductive sealing head; The elastic component includes a mounting base, a spring pressure plate, a connecting screw, and a spring; the mounting base is connected to the conductive sealing head and the hollow composite insulator; the spring pressure plate is sleeved on the conductive tube and threadedly connected to the conductive tube; both ends of the connecting screw are connected to the mounting base and the spring pressure plate, respectively; the spring is sleeved on the connecting screw, and both ends abut against the spring pressure plate and the mounting base, respectively. The mounting base is bolted to the hollow composite insulator; the mounting base is connected to the conductive sealing head by screws. The tail assembly includes a terminal block and a base; a second current-carrying strip is provided at the first end of the terminal block, the second current-carrying strip is electrically connected to the conductive tube, and a third current-carrying strip is provided at the second end of the terminal block, the third current-carrying strip is used to connect to the tube socket for current carrying; the base is connected to the terminal block and the insulating core. The outer wall of the insulating core is provided with a boss structure, and the middle flange is positioned and engaged with the insulating core through the boss structure.

2. The GIS outgoing sleeve as described in claim 1, characterized in that, The terminal block is connected to the base by screws.

3. The GIS outgoing sleeve as described in claim 1, characterized in that, The base is threadedly connected to the insulating core.

4. The GIS outgoing sleeve as described in claim 1, characterized in that, The central flange is bolted to the hollow composite insulator.

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