A new type of cable compartment conductor connection structure for gas insulated switchgear

Abstract

The present invention discloses a cable bin conductor connection structure of a novel gas-insulated switchgear, comprising: a three-way conductor, comprising a first conductor outlet portion, a second conductor outlet portion and a third conductor outlet portion, wherein the first conductor outlet portion is arranged below the three-way conductor, the second conductor outlet portion is arranged above the three-way conductor, and the third conductor outlet portion is arranged on one side of the three-way conductor; a transition conductor, wherein the transition conductor is vertically arranged, and the upper end of the transition conductor is connected to the first conductor outlet portion; a cable head connection device, comprising a spacer conductor and a contact seat, wherein the spacer conductor is provided with a contact seat mounting portion and a cable head docking portion, the contact seat is mounted on the contact seat mounting portion, the cable head docking portion is used for docking with the cable head, and the contact seat can dock with the lower end of the transition conductor; a shielding ball, which is detachably connected to the second conductor outlet portion; a main body conductor of the cable bin, wherein the main body conductor is connected to the third conductor outlet portion.

Description

Technical Field

[0001] The invention relates to a gas-insulated switchgear, in particular to a cable compartment conductor connection structure of a novel gas-insulated switchgear. Background Art

[0002] GIS stands for Gas Insulated Switchgear, which mainly combines busbars, circuit breakers, CTs, PTs, disconnectors, and lightning arresters, and is also called high-voltage distribution equipment. It is mainly used in voltages above 35KV.

[0003] In the high-voltage power transmission and transformation system, substation GIS and GIL equipment have been widely used. In the process of equipment installation and maintenance, convenient disassembly and installation are very important. The previous cable warehouse conductor connection was complicated, difficult to install and disassemble, and the processing was difficult and costly. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a new type of cable bin conductor connection structure of a gas insulated switchgear, which can simplify the connection structure of the cable bin conductor.

[0005] A cable compartment conductor connection structure of a novel gas insulated switchgear according to the present invention comprises:

[0006] A three-outlet conductor, the three-outlet conductor having a first conductor outlet portion, a second conductor outlet portion, and a third conductor outlet portion, the first conductor outlet portion being arranged below the three-outlet conductor, the second conductor outlet portion being arranged above the three-outlet conductor, and the third conductor outlet portion being arranged on one side of the three-outlet conductor;

[0007] A transition conductor, wherein the transition conductor is vertically arranged, and an upper end of the transition conductor is connected to the first conductor outlet portion;

[0008] A cable head connection device, comprising a spacer conductor and a contact seat, wherein the spacer conductor is provided with a contact seat mounting portion and a cable head docking portion, the contact seat is mounted on the contact seat mounting portion, the cable head docking portion is used to dock with the cable head, and the contact seat can dock with the lower end of the transition conductor;

[0009] A shielding ball, wherein one end of the shielding ball is a spherical surface and the other end is a plane, and the plane end of the shielding ball is detachably connected to the second conductor outlet portion;

[0010] The main body conductor of the cable bin is connected to the third conductor outlet.

[0011] The cable compartment conductor connection structure of the new gas-insulated switchgear according to the embodiment of the present invention has at least the following beneficial effects: a three-way conductor is used as the connection base of each component, and the first conductor outlet part, the second conductor outlet part, and the third conductor outlet part of the three-way conductor can be connected to the transition conductor, the shielding ball, and the main conductor, respectively, and the connection process is simple and convenient. In the process of connecting with the cable head, the cable head connection device is docked with the cable head, and in the process of lifting the cable head, the cable head connection device rises accordingly, and the lower end of the transition conductor is docked with the contact seat to complete the conduction with the three-way conductor. In this process, the structure reduces the installation inconvenience or even the inability to dock due to height and centering errors. The second conductor outlet is generally not used. The purpose of installing the shielding ball on the second conductor outlet is to use the arc-shaped surface structure of the shielding ball to shield the protruding sharp-angle structure at the second conductor outlet to avoid discharge, thereby improving the overall insulation of the equipment. When the second conductor outlet is connected to the conductor of other components, the shielding ball can be removed and the second conductor outlet can be connected to the conductor of other components, thereby adapting to different outlet arrangements of the gas insulated switchgear.

[0012] According to some embodiments of the present invention, the upper end of the transition conductor is connected to the first conductor outlet portion via a connecting bolt.

[0013] According to some embodiments of the present invention, a limiting ring is provided on the transition conductor to limit the insertion depth of the transition conductor into the contact seat.

[0014] According to some embodiments of the present invention, the transition conductor is a cylindrical structure.

[0015] According to some embodiments of the present invention, the contact seat is mounted on the contact seat mounting portion by connecting bolts.

[0016] According to some embodiments of the present invention, three groups of spring contact fingers are disposed in the contact seat.

[0017] According to some embodiments of the present invention, the shielding ball is detachably connected to the second conductor outlet portion via a connecting bolt.

[0018] According to some embodiments of the present invention, the body conductor is connected to the third conductor outlet portion via a connecting bolt.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural schematic diagram of a cable compartment conductor connection structure of a novel gas insulated switchgear according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The shielding ball at the outlet of the second conductor is removed and replaced with a structural diagram of the connecting conductor.

[0023] Reference numerals:

[0024] Three outgoing conductors 100, a first conductor outgoing portion 110, a second conductor outgoing portion 120, and a third conductor outgoing portion 130;

[0025] Transition conductor 200, limiting ring platform 210;

[0026] Cable head connection device 300, spacer conductor 310, contact seat 320, spring contact finger 321;

[0027] Shielding ball 400; main body conductor 500; connecting conductor 600. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, “several” means one or more, “more” means more than two, “greater than”, “less than”, “exceed”, etc. are understood as not including the number itself, and “above”, “below”, “within”, etc. are understood as including the number itself.

[0031] If the first and second are described, they are only used to distinguish the technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] like Figure 1 and Figure 2 As shown, the cable compartment conductor connection structure of the novel gas insulated switchgear according to the embodiment of the present invention comprises:

[0035] A three-way conductor 100, wherein the three-way conductor 100 comprises a first conductor outlet portion 110, a second conductor outlet portion 120, and a third conductor outlet portion 130, wherein the first conductor outlet portion 110 is disposed below the three-way conductor 100, the second conductor outlet portion 120 is disposed above the three-way conductor 100, and the third conductor outlet portion 130 is disposed at one side of the three-way conductor 100;

[0036] A transition conductor 200, which is arranged vertically, and an upper end of the transition conductor 200 is connected to the first conductor outlet portion 110;

[0037] The cable head connection device 300 includes a spacer conductor 310 and a contact seat 320. The spacer conductor 310 is provided with a contact seat mounting portion and a cable head docking portion. The contact seat 320 is mounted on the contact seat mounting portion. The cable head docking portion is used to dock with the cable head. The contact seat 320 can dock with the lower end of the transition conductor 200.

[0038] A shielding ball 400, wherein one end of the shielding ball 400 is a spherical surface and the other end is a flat surface, and the flat end of the shielding ball 400 is detachably connected to the second conductor outlet portion 120;

[0039] The main body conductor 500 of the cable bin is connected to the third conductor outlet portion 130 .

[0040] In the present invention, the three-way conductor 100 is used as the connection base of various components. The first conductor outlet portion 110, the second conductor outlet portion 120, and the third conductor outlet portion 130 of the three-way conductor 100 can be connected to the transition conductor 200, the shielding ball 400 and the main conductor 500 respectively, and the connection process is simple and convenient.

[0041] In the process of connecting with the cable head (not shown in the figure), the cable head connecting device 300 is docked with the cable head, specifically with the cable head docking part of the spacer conductor 310, wherein the cable head docking part is its lower end face, and the lower end face is provided with a connecting bolt. After the cable head and the cable head docking part are docked, the cable head and the cable head docking part are fixed. In the process of lifting the cable head, the cable head connecting device 300 rises accordingly until the lower end of the transition conductor 200 docks with the contact seat 320, completing the electrical conduction with the three-way conductor 100. In this process, the structure reduces the installation inconvenience or even the problem of docking failure caused by height and centering errors.

[0042] like Figure 1 and Figure 2 As shown, the second conductor outlet 120 is generally not used, so under normal circumstances, a shielding ball 400 will be installed on the second conductor outlet 120. The purpose of installing the shielding ball 400 on the second conductor outlet 120 is that the shielding ball 400 can be used to shield the protruding sharp corner structure at the second conductor outlet 120, and its arc-shaped surface structure does not cause charge concentration, thereby improving the overall insulation of the equipment. When the second conductor outlet 120 is connected to the conductor of other components, after removing the shielding ball 400, the second conductor outlet 120 can be connected to the conductor of other components, thereby adapting to different outlet arrangements of gas insulated switchgear. For example, when the GIS equipment is equipped with a voltage transformer and a lightning arrester. At this time, remove the shielding ball 400 and connect the connecting conductor 600 of the voltage transformer and the lightning arrester to the second conductor outlet 120.

[0043] In some embodiments of the present invention, the upper end of the transition conductor 200 is connected to the first conductor outlet portion 110 by a connecting bolt. The transition conductor 200 and the three-way conductor 100 are produced separately and then connected by a connecting bolt. Specifically, a threaded hole is provided at the connection portion between the upper end of the transition conductor 200 and the three-way conductor 100, and the connecting bolt connects the two through the threaded hole, which is simple and convenient to assemble.

[0044] In some embodiments of the present invention, a limiting ring 210 is provided on the transition conductor 200 to limit the insertion depth of the transition conductor 200 into the contact seat 320. In the process of connecting the contact seat 320 with the transition conductor 200, in order to avoid the contact seat 320 from continuously rising during the cable head lifting process, resulting in the transition conductor 200 being inserted too deeply, causing the transition conductor 210 to be directly squeezed and contacted with the contact seat 320 and damaged, by providing the limiting ring 210, when the transition conductor 200 is inserted to a certain position, the upper end of the contact seat 320 is resisted by the limiting ring 210 and cannot continue to rise, and the transition conductor 200 cannot continue to be inserted, thereby avoiding the transition conductor 200 from being inserted too deeply.

[0045] Furthermore, the transition conductor 200 is a cylindrical structure. The transition conductor 200 adopts a cylindrical structure, which has the characteristics of simple molding and easy production. The cylindrical shape is easy to insert into the contact seat 320. In addition, the cylindrical surface is not prone to charge concentration.

[0046] In some embodiments of the present invention, the contact seat 320 is mounted on the contact seat mounting portion by connecting bolts. The spacer conductor 310 and the contact seat 320 are produced separately, which is conducive to mass production. After each of them is produced, they are connected by connecting bolts. Specifically, a threaded hole is provided at the connection between the upper end of the spacer conductor 310 and the contact seat 320, and the connecting bolt connects the two through the threaded hole, which is simple and convenient to assemble.

[0047] In some embodiments of the present invention, three groups of spring contact fingers 321 are provided in the contact base 320. By providing three groups of spring contact fingers 321 in the contact base 320, during the insertion process of the transition conductor 200, good conductive contact is ensured between the transition conductor 200 and the spring contact fingers 321, thereby improving reliability.

[0048] In some embodiments of the present invention, the shielding ball 400 is detachably connected to the second conductor outlet portion by a connecting bolt. The shielding ball 400 and the three-way conductor 100 are produced separately and then connected by a connecting bolt. Specifically, a threaded hole is provided at the connection portion between the plane end of the shielding ball 400 and the three-way conductor 100, and the connecting bolt connects the two through the threaded hole, which is simple and convenient to assemble.

[0049] In some embodiments of the present invention, the body conductor 500 is connected to the third conductor outlet 130 via a connecting bolt. Specifically, a threaded hole is provided at the connecting end of the body conductor 500 and the connecting portion of the three-way conductor 100, and the connecting bolt connects the two through the threaded hole, which is simple and convenient to assemble.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A new type of cable compartment conductor connection structure for gas insulated switchgear, characterized in that: include: A three-outlet conductor (100), the three-outlet conductor (100) comprising a first conductor outlet portion (110), a second conductor outlet portion (120), and a third conductor outlet portion (130), the first conductor outlet portion (110) being arranged below the three-outlet conductor (100), the second conductor outlet portion (120) being arranged above the three-outlet conductor (100), and the third conductor outlet portion (130) being arranged on one side of the three-outlet conductor (100); A transition conductor (200), the transition conductor (200) being arranged vertically, and the upper end of the transition conductor (200) being connected to the first conductor outlet portion (110); A cable head connection device (300) comprises a spacer conductor (310) and a contact seat (320), wherein the spacer conductor (310) is provided with a contact seat mounting portion and a cable head docking portion, the contact seat (320) is mounted on the contact seat mounting portion, the cable head docking portion is used for docking with the cable head, and the contact seat (320) can dock with the lower end of the transition conductor (200); A shielding ball (400), wherein one end of the shielding ball (400) is a spherical surface and the other end is a plane, and the plane end of the shielding ball (400) is detachably connected to the second conductor outlet portion (120); A main body conductor (500) of the cable bin, wherein the main body conductor (500) is connected to the third conductor outlet portion (130).

2. The cable compartment conductor connection structure of the novel gas insulated switchgear according to claim 1 is characterized in that: The upper end of the transition conductor (200) is connected to the first conductor outlet portion (110) via a connecting bolt.

3. The cable compartment conductor connection structure of the new gas insulated switchgear according to claim 1 is characterized in that: A limiting ring platform (210) is provided on the transition conductor (200) to limit the insertion depth of the transition conductor (200) into the contact seat (320).

4. The cable compartment conductor connection structure of the new gas insulated switchgear according to any one of claims 1 to 3, characterized in that: The transition conductor (200) is a cylindrical structure.

5. The cable compartment conductor connection structure of the novel gas insulated switchgear according to claim 1 is characterized in that: The contact seat (320) is mounted on the contact seat mounting portion via connecting bolts.

6. The cable compartment conductor connection structure of the novel gas insulated switchgear according to claim 1 or 5, characterized in that: Three groups of spring contact fingers (321) are arranged in the contact seat (320).

7. The cable compartment conductor connection structure of the novel gas insulated switchgear according to claim 1 is characterized in that: The shielding ball (400) is detachably connected to the second conductor outlet portion via a connecting bolt.

8. The cable compartment conductor connection structure of the novel gas insulated switchgear according to claim 1 is characterized in that: The body conductor (500) is connected to the third conductor outlet portion (130) via a connecting bolt.

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