Detachable conductor structure for 220kV combined electric appliance

Abstract

The utility model relates to the field of combined electric appliances, in particular to a detachable conductor structure for a 220kV combined electric appliance, which comprises a lightning arrester, a voltage transformer and a GIS (Gas Insulated Switchgear) body, a plurality of disassembling operation hand holes are formed in the shell, and the shell is of a three-way structure; the lightning arrester connecting conductor is arranged in the shell, and the lightning arrester connecting conductor is connected with the lightning arrester conductive part; the voltage transformer connecting conductor is arranged in the shell, and the two ends of the voltage transformer connecting conductor are electrically connected with the voltage transformer and the lightning arrester connecting conductor respectively; one end of the detachable conductor a is electrically connected with the lightning arrester connecting conductor, the other end of the detachable conductor a is electrically connected with the detachable conductor b, and the detachable conductor b is connected with the conductive part of the GIS body. According to the utility model, the isolation between the voltage transformer and the lightning arrester and the GIS body can be completed through one-time operation, and through the implementation of the scheme, the occupied area of the whole equipment is reduced, and the equipment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of combined electric appliance, especially to a detachable conductor structure for 220kV combined electric appliance. BACKGROUND

[0002] With the development of gas insulated metal enclosed switchgear (GIS), GIS equipment is applied more and more widely, and more and more projects require to place the original external voltage transformer and lightning arrester in the GIS equipment due to the miniaturization development of equipment and the design and construction demand of substation. According to the relevant technical specification, the voltage transformer and lightning arrester built in the GIS should be designed with detachable conductors between the main circuit of the GIS, so as to isolate the voltage transformer and lightning arrester from the main circuit of the GIS when testing the GIS.

[0003] The existing detachable structure has one detachable conductor for the voltage transformer and lightning arrester respectively, and the original scheme occupies a large area and uses two detachable conductors, which is high in cost. UTILITY MODEL CONTENT

[0004] The utility model aims at the problem of the voltage transformer and lightning arrester having one detachable conductor respectively, occupying a large area and being high in cost in the background art, and provides a detachable conductor structure for 220kV combined electric appliance.

[0005] The technical scheme of the utility model: a detachable conductor structure for 220kV combined electric appliance, comprising a lightning arrester, a voltage transformer and a GIS body; further comprising:

[0006] A shell is provided with a plurality of disassembly operation hand holes, and the shell is a tee structure;

[0007] A lightning arrester connecting conductor is arranged in the shell, and the lightning arrester connecting conductor is connected with a conductive part of the lightning arrester;

[0008] A voltage transformer connecting conductor is arranged in the shell, and the two ends of the voltage transformer connecting conductor are respectively electrically connected with the voltage transformer and the lightning arrester connecting conductor;

[0009] A detachable conductor a is electrically connected with the lightning arrester connecting conductor at one end, and the other end of the detachable conductor a is electrically connected with a detachable conductor b, and the detachable conductor b is connected with a conductive part of the GIS body.

[0010] Preferably, an air chamber inflation port is arranged on one of the disassembly operation hand holes.

[0011] Preferably, the three interfaces of the shell are connected with the lightning arrester, voltage transformer and GIS body through flanges.

[0012] Preferably, the surge arrester connecting conductor is connected to the surge arrester's conductive contact, the voltage transformer connecting conductor is connected to the voltage transformer's conductive contact, and the disconnect conductor b is connected to the conductive contact of the GIS body.

[0013] Preferably, the disassembly conductor a and the disassembly conductor b are connected by multiple bolts, and the disassembly conductor b is connected to the conductive contact of the GIS body by multiple bolts.

[0014] Preferably, the surge arrester connecting conductor is provided with two conductive interfaces, and the end of the voltage transformer connecting conductor and the end of the disconnect conductor a are respectively inserted into the two conductive interfaces.

[0015] Preferably, three disassembly operation manholes are provided, one of which is located on one side of the voltage transformer, and the other two are arranged side by side on the other side of the housing.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: the isolation of voltage transformers and surge arresters from the GIS body can be completed in one operation. By implementing this solution, the overall footprint of the equipment is reduced and the equipment cost is lowered. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0018] Fig. 2 This is a diagram showing the disassembled state.

[0019] Reference numerals: 1. Outer casing; 2. Disassembly access port; 3. Surge arrester connection conductor; 4. Voltage transformer connection conductor; 5. Surge arrester; 6. Voltage transformer; 7. Disassembly conductor a; 8. Disassembly conductor b; 9. GIS body; 10. Gas chamber inflation port. Detailed Implementation

[0020] Example 1

[0021] like Figs. 1-2 As shown, this utility model proposes a detachable conductor structure for a 220kV combined electrical appliance, including a surge arrester 5, a voltage transformer 6, and a GIS body 9; it also includes:

[0022] The outer casing 1 has multiple disassembly operation hand holes 2 and the outer casing 1 has a three-way structure;

[0023] The surge arrester connecting conductor 3 is installed inside the housing 1, and the surge arrester connecting conductor 3 is connected to the conductive part of the surge arrester 5.

[0024] The voltage transformer connecting conductor 4 is installed inside the housing 1, and its two ends are electrically connected to the voltage transformer 6 and the surge arrester connecting conductor 3, respectively.

[0025] And the disassembly conductor a7, one end is electrically connected with the arrester connecting conductor 3, the other end of the disassembly conductor a7 is electrically connected with the disassembly conductor b8, and the disassembly conductor b8 is connected with the conductive part of the GIS body 9.

[0026] Embodiment two

[0027] As Figs. 1-2 The utility model discloses a kind of for 220kV combined electrical apparatus detachable conductor structure, compared with embodiment one, this embodiment introduces detailed structure.

[0028] Three are set in disassembly operation hand hole 2, one of disassembly operation hand hole 2 is located voltage transformer 6 side, and other two disassembly operation hand hole 2 are side by side and set in the other side of shell 1, one of disassembly operation hand hole 2 is provided with air chamber inflation port 10, and gas is injected into shell, such as inert protective gas is injected, through air chamber inflation port 10.The three interfaces of shell 1 are connected with arrester 5, voltage transformer 6 and GIS body 9 through flange.The electrically-conductive contact seat of arrester 5 is connected with arrester connecting conductor 3, the electrically-conductive contact seat of voltage transformer 6 is connected with voltage transformer connecting conductor 4, and the electrically-conductive contact seat of GIS body 9 is connected with disassembly conductor b8.Disassembly conductor a7 and disassembly conductor b8 are connected by multiple bolts, and the electrically-conductive contact seat of GIS body 9 is connected with disassembly conductor b8 by multiple bolts.Two electrically-conductive interfaces are provided on arrester connecting conductor 3, and the end of voltage transformer connecting conductor 4 and the end of disassembly conductor a7 are respectively inserted into two electrically-conductive interfaces.

[0029] In summary, in the utility model, when the equipment is normal, the internal conductor of this structure connects GIS body 9 with voltage transformer 6 and arrester 5, to ensure that voltage transformer 6, arrester 5 and GIS body 9 are in the conducting state, when it is needed to disconnect voltage transformer 6, arrester 5 and GIS body 9, only need to remove internal disassembly conductor a7 and disassembly conductor b8, and the external voltage transformer 6 and arrester 5 do not need to be removed, and the removal mode of disassembly conductor a7 and disassembly conductor b8 is that the connecting bolt between disassembly conductor a7 and disassembly conductor b8 is removed through the disassembly operation hand hole 2 of shell 1, then the connecting bolt between disassembly conductor b8 and GIS body 9 is removed, and then disassembly conductor a7 and disassembly conductor b8 are taken out, to realize the isolation of voltage transformer 6, arrester 5 and GIS body 9.

[0030] The embodiment of the utility model is described in detail in connection with the drawings above, but the utility model is not limited to this, within the knowledge range possessed by the person skilled in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. A detachable conductor structure for a 220kV combined electrical appliance, comprising a surge arrester (5), a voltage transformer (6), and a GIS body (9); characterized in that, Also includes: The outer casing (1) has multiple disassembly operation hand holes (2) on it, and the outer casing (1) has a three-way structure; The surge arrester connecting conductor (3) is installed inside the housing (1), and the surge arrester connecting conductor (3) is connected to the conductive part of the surge arrester (5); The voltage transformer connecting conductor (4) is installed inside the casing (1), and the two ends of the voltage transformer connecting conductor are electrically connected to the voltage transformer (6) and the surge arrester connecting conductor (3), respectively. And disassemble conductor a (7), one end of which is electrically connected to the surge arrester connecting conductor (3), the other end of disassemble conductor a (7) is electrically connected to disassemble conductor b (8), and disassemble conductor b (8) is connected to the conductive part of the GIS body (9).

2. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, One of the disassembly operation handholes (2) is equipped with an air chamber inflation port (10).

3. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, The three interfaces of the outer casing (1) are all connected to the surge arrester (5), voltage transformer (6) and GIS body (9) via flanges.

4. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, The surge arrester connecting conductor (3) is connected to the conductive contact of the surge arrester (5), the voltage transformer connecting conductor (4) is connected to the conductive contact of the voltage transformer (6), and the disassembled conductor b (8) is connected to the conductive contact of the GIS body (9).

5. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, The disassembly conductor a (7) and the disassembly conductor b (8) are connected by multiple bolts, and the disassembly conductor b (8) is connected to the conductive contact of the GIS body (9) by multiple bolts.

6. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, Two conductive interfaces are provided on the surge arrester connecting conductor (3). The end of the voltage transformer connecting conductor (4) and the end of the disassembly conductor a (7) are respectively inserted into the two conductive interfaces.

7. The detachable conductor structure for 220kV combined electrical appliances according to claim 1, characterized in that, Three disassembly operation hand holes (2) are provided. One of the disassembly operation hand holes (2) is located on one side of the voltage transformer (6), and the other two disassembly operation hand holes (2) are arranged side by side on the other side of the housing (1).

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