CN213576094U - Withstand voltage test auxiliary device after GIS switch maintenance - Google Patents
Withstand voltage test auxiliary device after GIS switch maintenance Download PDFInfo
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- CN213576094U CN213576094U CN202022504743.6U CN202022504743U CN213576094U CN 213576094 U CN213576094 U CN 213576094U CN 202022504743 U CN202022504743 U CN 202022504743U CN 213576094 U CN213576094 U CN 213576094U
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- 238000012423 maintenance Methods 0.000 title claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 78
- 239000012212 insulator Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract 2
- 239000002184 metal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The utility model relates to a withstand voltage test auxiliary device after GIS switch maintenance, which is used for connecting a grounding switch knife edge and a plurality of GIS switch fractures, and air ducts are arranged in the grounding switch knife edge and the GIS switch fractures; the grounding gate knife edge is connected with a voltage source; the method is characterized in that: comprises a gas connecting pipe, an outer sleeve, an insulator and a sealing cover unit(ii) a By adopting the voltage-withstanding test auxiliary device to be connected between the grounding switch knife edge and the plurality of GIS switch fractures, the grounding switch knife edge is not required to be directly connected with the GIS switch fractures, the subsequent disassembly is convenient, and the quick connection is realized; in addition, the sealing cover unit is arranged at the flange of the grounding gate knife edge and the GIS switch fracture, so that SF can be effectively carried out6And gas is blocked to avoid leakage.
Description
Technical Field
The utility model relates to a GIS switch overhauls technical field, especially relates to a withstand voltage test auxiliary device after GIS switch overhauls.
Background
GIS is the English abbreviation of gas insulated totally-enclosed combined electrical apparatus. The GIS is composed of a breaker, a disconnecting switch, a grounding switch, a mutual inductor, a lightning arrester, a bus, a connecting piece, an outgoing line terminal and the like, all the equipment or components are enclosed in a metal grounded shell, and SF6 insulating gas with certain pressure is filled in the metal grounded shell, so that the GIS is also called as an SF6 fully-closed combined electrical appliance.
The GIS switch incoming and outgoing line contacts are completely sealed in the GIS and filled with SF6 gas with the same operation rated pressure to ensure the insulation level; when the switch is subjected to switch alternating-current voltage withstand test between overhaul workshops after disassembly and overhaul of the switch, flanges of a wire inlet and a wire outlet of the switch are required to be sealed, meanwhile, a contact at the wire inlet side is led out by a bus to be convenient for pressurization, a contact at the wire outlet side is led out by the bus to be grounded or suspended, and the switch can be filled with SF6 gas with the same operation rated pressure after overhaul and subjected to the alternating-current voltage withstand test to the break and the ground.
Therefore, the auxiliary device for the GIS switch voltage withstand test is needed, SF6 gas with the same operation rated pressure is filled, the alternating current voltage withstand test of the GIS switch fracture and the alternating current voltage withstand test of the GIS switch fracture to the ground are directly carried out, the disassembly is convenient, and the full sealing of the switch incoming and outgoing line contacts is ensured.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a withstand voltage test auxiliary device behind GIS switch overhauls, can solve general GIS switch fracture and to ground withstand voltage test leakproofness poor, SF6The gas is easy to leak.
In order to solve the technical problem, the utility model adopts the technical scheme that: a withstand voltage test auxiliary device after GIS switch maintenance is used for connecting a grounding switch knife edge and a plurality of GIS switch fractures, and air guide pipes are arranged in the grounding switch knife edge and the GIS switch fractures; the grounding gate knife edge is connected with a voltage source; the innovation points are as follows: the device comprises a gas connecting pipe, an outer sleeve, an insulator and a sealing cover unit;
two ends of the gas connecting pipe are respectively connected to the gas guide pipe in the grounding knife switch opening and the gas guide pipes in the plurality of GIS opening and closing openings;
the outer sleeve is nested on the gas connecting pipe and is coaxially arranged, and one end of the outer sleeve is connected with the grounding gate knife edge through an end flange; the other end of the outer sleeve is provided with a sealing flange; a plurality of connection pipes correspondingly connected with the GIS switch fracture are arranged on the side edge of the outer sleeve along the extension direction, the connection pipes are communicated with the outer sleeve, and the connection pipes are connected with the GIS switch fracture through connecting flanges;
the insulators are provided with a plurality of insulators and distributed along the extending direction of the gas connecting pipe; two ends of the insulator are respectively connected between the outer wall of the gas connecting pipe and the inner wall of the outer sleeve;
the sealing cover unit is wrapped on the outer sides of the end flange and the connecting flange to seal the flange connecting part; the sealing cover unit comprises two shell structures, wherein the two shell structures are a sealing upper shell and a sealing lower shell;
the upper sealing shell and the lower sealing shell are both provided with cavity structures for accommodating pipeline connection, and flanges for pipeline connection can be placed in the cavity structures; the sealing device comprises a sealing upper shell, a sealing lower shell, a connecting flange and an outer sleeve, wherein at least one end face of the sealing upper shell and the sealing lower shell is provided with a semi-cylindrical notch, the sealing upper shell and the sealing lower shell are buckled and internally formed into a cavity for accommodating the connecting flange and the end flange, the semi-cylindrical notches are buckled and formed into a cylindrical through hole for accommodating the branch pipe or the outer sleeve to penetrate through the sealing, and an annular sealing rubber sheet is arranged at the cylindrical through;
a plurality of bolt holes are formed in the buckling connection position of the upper sealing shell and the lower sealing shell, and the upper and lower shells are locked through the bolts; the joint of the upper sealed shell and the lower sealed shell is at least provided with two sealing grooves, and sealing rubber strips are arranged in the sealing grooves.
Furthermore, the insulators are at least provided with three insulators on the same plane perpendicular to the axial direction of the gas connecting pipe.
Furthermore, a pressure relief hole is formed in the upper sealing shell or the lower sealing shell, an internal thread is formed in the inner wall of the pressure relief hole, the pressure relief hole is embedded into the locking plug through a bolt with a sealing ring, and the pressure relief hole is formed in the upper sealing shell.
The utility model has the advantages that:
1) in the utility model, the auxiliary device for the withstand voltage test is connected between the grounding switch knife edge and the plurality of GIS switch fractures, so that the grounding switch knife edge is not required to be directly connected with the GIS switch fractures, the subsequent disassembly is convenient, and the quick connection is realized; in addition, the sealing cover unit is arranged at the flange of the grounding gate knife edge and the GIS switch fracture, so that SF can be effectively carried out6And gas is blocked to avoid leakage.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the utility model discloses a withstand voltage test auxiliary device's connection structure chart after GIS switch overhauls.
Fig. 2 is the utility model discloses a withstand voltage test auxiliary device's sealed cowling unit structure chart after GIS switch overhauls.
Fig. 3 is the utility model discloses a GIS switch access hole withstand voltage test auxiliary device's sealed casing assembly structure schematic diagram down.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the auxiliary device for the withstand voltage test after the maintenance of the GIS switch is used for connecting the grounding switch knife edge and a plurality of GIS switch fractures, and the grounding switch knife edge and the plurality of GIS switch fractures are both provided with gas guide pipes; the grounding gate edge is connected with a voltage source; comprises a gas connecting pipe 1, an outer sleeve 2, an insulator 3 and a sealing cover unit 4.
Two ends of the gas connecting pipe 1 are respectively connected to the gas guide pipe in the grounding knife switch opening and the gas guide pipes in the GIS opening and closing openings.
The outer sleeve 2 is nested on the gas connecting pipe and is coaxially arranged, and one end of the outer sleeve 2 is connected with the grounding gate knife edge through an end flange 21; the other end of the outer sleeve 2 is provided with a sealing flange 22; a plurality of connecting pipes 23 correspondingly connected with the GIS switch fracture are arranged on the side edge of the outer sleeve 2 along the extending direction, the connecting pipes 23 are communicated with the outer sleeve 2, and the connecting pipes 23 are connected with the GIS switch fracture through connecting flanges 24.
The insulators 3 are provided with a plurality of insulators and distributed along the extending direction of the gas connecting pipe 1; the two ends of the insulator 3 are respectively connected between the outer wall of the gas connecting pipe 1 and the inner wall of the outer sleeve 2.
The sealing cover unit 4 is wrapped on the outer sides of the end flange 21 and the connecting flange 24 to seal the flange connection part; the seal cover unit 4 includes two housing structures, and the two housing structures are a seal upper housing 41 and a seal lower housing 42.
The upper sealing shell 41 and the lower sealing shell 42 are both provided with cavity structures for accommodating pipeline connection, and flanges for pipeline connection can be placed in the cavity structures; the upper sealing shell 41 and the lower sealing shell 42 are provided with semi-cylindrical notches on two end faces, the upper sealing shell 41 and the lower sealing shell 42 are buckled and internally form a cavity for accommodating the connecting flange 24 and the end flange 21, the semi-cylindrical notches are buckled and form a cylindrical through hole 43 for accommodating the adapter 23 or the outer sleeve 2 to penetrate through and seal, and an annular sealing rubber sheet is arranged at the cylindrical through hole 43.
A plurality of bolt holes are formed in the buckling connection position of the upper sealing shell 41 and the lower sealing shell 42, and the upper shell and the lower shell are locked through the bolts; at least two sealing grooves 45 are arranged at the buckling connection position of the upper sealing shell 41 and the lower sealing shell 42, and sealing rubber strips are arranged in the sealing grooves.
The insulators 3 are at least provided with three insulators 3 in the same plane perpendicular to the axial direction of the gas connecting pipe 1.
A pressure relief hole 44 is formed in the upper sealing shell 41 or the lower sealing shell 42, an internal thread is formed in the inner wall of the pressure relief hole 44, the pressure relief hole is embedded into a bolt with a sealing ring to be locked and blocked, and the pressure relief hole 44 is formed in the upper sealing shell 41.
The utility model discloses a theory of operation is: by adopting the voltage-withstanding test auxiliary device to be connected between the grounding switch knife edge and the plurality of GIS switch fractures, the grounding switch knife edge is not required to be directly connected with the GIS switch fractures, the subsequent disassembly is convenient, and the quick connection is realized; in addition, the sealing cover unit is arranged at the flange of the grounding gate knife edge and the GIS switch fracture, so that SF can be effectively carried out6And gas is blocked to avoid leakage.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A withstand voltage test auxiliary device after GIS switch maintenance is used for connecting a grounding switch knife edge and a plurality of GIS switch fractures, and air guide pipes are arranged in the grounding switch knife edge and the GIS switch fractures; the grounding gate knife edge is connected with a voltage source; the method is characterized in that: the device comprises a gas connecting pipe, an outer sleeve, an insulator and a sealing cover unit;
two ends of the gas connecting pipe are respectively connected to the gas guide pipe in the grounding knife switch opening and the gas guide pipes in the plurality of GIS opening and closing openings;
the outer sleeve is nested on the gas connecting pipe and is coaxially arranged, and one end of the outer sleeve is connected with the grounding gate knife edge through an end flange; the other end of the outer sleeve is provided with a sealing flange; a plurality of connection pipes correspondingly connected with the GIS switch fracture are arranged on the side edge of the outer sleeve along the extension direction, the connection pipes are communicated with the outer sleeve, and the connection pipes are connected with the GIS switch fracture through connecting flanges;
the insulators are provided with a plurality of insulators and distributed along the extending direction of the gas connecting pipe; two ends of the insulator are respectively connected between the outer wall of the gas connecting pipe and the inner wall of the outer sleeve;
the sealing cover unit is wrapped on the outer sides of the end flange and the connecting flange to seal the flange connecting part; the sealing cover unit comprises two shell structures, wherein the two shell structures are a sealing upper shell and a sealing lower shell;
the upper sealing shell and the lower sealing shell are both provided with cavity structures for accommodating pipeline connection, and flanges for pipeline connection can be placed in the cavity structures; the sealing device comprises a sealing upper shell, a sealing lower shell, a connecting flange and an outer sleeve, wherein at least one end face of the sealing upper shell and the sealing lower shell is provided with a semi-cylindrical notch, the sealing upper shell and the sealing lower shell are buckled and internally formed into a cavity for accommodating the connecting flange and the end flange, the semi-cylindrical notches are buckled and formed into a cylindrical through hole for accommodating the branch pipe or the outer sleeve to penetrate through the sealing, and an annular sealing rubber sheet is arranged at the cylindrical through;
a plurality of bolt holes are formed in the buckling connection position of the upper sealing shell and the lower sealing shell, and the upper and lower shells are locked through the bolts; the joint of the upper sealed shell and the lower sealed shell is at least provided with two sealing grooves, and sealing rubber strips are arranged in the sealing grooves.
2. The GIS switch overhauls back withstand voltage test auxiliary device of claim 1 characterized in that: the insulator is at least provided with three insulators on the same plane perpendicular to the axial direction of the gas connecting pipe.
3. The GIS switch overhauls back withstand voltage test auxiliary device of claim 1 characterized in that: the upper sealing shell or the lower sealing shell is provided with a pressure relief hole, an inner thread is arranged on the inner wall of the pressure relief hole, the pressure relief hole is embedded into the locking plug through a bolt with a sealing ring, and the pressure relief hole is formed in the upper sealing shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022504743.6U CN213576094U (en) | 2020-11-03 | 2020-11-03 | Withstand voltage test auxiliary device after GIS switch maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022504743.6U CN213576094U (en) | 2020-11-03 | 2020-11-03 | Withstand voltage test auxiliary device after GIS switch maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213576094U true CN213576094U (en) | 2021-06-29 |
Family
ID=76533012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022504743.6U Active CN213576094U (en) | 2020-11-03 | 2020-11-03 | Withstand voltage test auxiliary device after GIS switch maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213576094U (en) |
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2020
- 2020-11-03 CN CN202022504743.6U patent/CN213576094U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220608 Address after: 210015 building 3, No. 201, Yanjiang Road, Gulou District, Nanjing, Jiangsu Province Patentee after: Huaneng Power International Jiangsu energy development Co., Ltd. Address before: 226000 Huaneng Road, tianshenggang, Nantong, Jiangsu Province Patentee before: Huaneng Power International,Inc. |
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| TR01 | Transfer of patent right |