CN218647765U - Gas transformer fusing protection device - Google Patents
Gas transformer fusing protection device Download PDFInfo
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- CN218647765U CN218647765U CN202222679374.3U CN202222679374U CN218647765U CN 218647765 U CN218647765 U CN 218647765U CN 202222679374 U CN202222679374 U CN 202222679374U CN 218647765 U CN218647765 U CN 218647765U
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Abstract
The utility model relates to a gas transformer fusing protection device, its characterized in that: the device comprises an air chamber, a shell, a connector, a fuse unit, a primary guide rod, a bottom plate and an insulating plug; the connector of the sulfur hexafluoride fuse is placed in the gas chamber filled with sulfur hexafluoride gas, so that the higher insulation requirement is met, the partial discharge level is high, and compared with the traditional resin-insulated dry PT, the connector is not aged, has better insulation performance, has a good service life, reduces the failure rate of equipment and improves the product stability; in addition, when the fuse wire of the fuse is fused and the fuse wire needs to be replaced, sulfur hexafluoride gas in the gas chamber does not need to be recovered, and the fuse wire is replaced conveniently only by opening the bottom plate and drawing out the fuse wire unit; two sections of shielding plates are arranged on the outer side of the shell and are used for shielding air gaps and defects inside products.
Description
Technical Field
The utility model relates to a voltage transformer technical field especially relates to a gas transformer fusing protection device.
Background
40.5kV GIS equipment is widely applied to a power transformation system, and a large voltage signal of a primary loop needs to be converted into a measurable small voltage signal through a voltage transformer (PT for short), and the signal is fed back to a measurement system and a protection device. Most of 40.5kV GIS equipment in the current market is dry PT with a fuse. The dry PT mainly comprises a fuse part and a transformer coil body, wherein the fuse part and the transformer coil body are integrated in a metal shell, and epoxy resin mixture is adopted as an insulating material inside the dry PT. The curing and molding process of the epoxy resin is complex, the epoxy resin is easy to age after long-term use, and the partial discharge increase caused by aging is irreversible, so that the failure rate is high, and the operation and maintenance are frequent. The service life of the GIS equipment is more than 30 years, and the requirements on the service life of matched components are high.
At present 40.5kV for GIS equipment PT be mostly dry-type PT, arrange GIS air chamber outside externally, mainly lean on resin insulation, the fuse part is integrated inside the PT, GIS equipment's life is more than 30 years, and the increase is put in the office that probably appears being aroused by insulating material ageing in long-term operation or even insulating failure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a gas transformer fusing protection device, can solve dry-type PT and adopt the insulating material of fuse and induction coil body after the epoxy solidification, the increase is put irreversibly by the office that ages and cause for a long time to use easily, and the fault rate is high, operation, maintenance frequent problem.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a gas transformer fusing protection device which innovation point lies in: the device comprises an air chamber, a shell, a connector, a fuse unit, a primary guide rod, a bottom plate and an insulating plug;
the air chamber is of an oval shell-shaped structure, and the bottom end of the air chamber is provided with a mounting hole for mounting the shell; the shell is of a hollow rotary body structure and is arranged in the air chamber; the bottom end contour of the shell is hermetically connected to the mounting hole on the air chamber, and the bottom end of the shell is provided with an opening; sulfur hexafluoride gas is filled between the outer wall of the shell and the inner wall of the gas chamber;
the connector is arranged at the top end of the shell, the bottom end of the connector is connected with the top end of the shell in a sealing mode, and the top end of the connector is sealed; the primary guide rod is arranged in the connector along the horizontal direction;
the fuse unit is arranged in the shell along the vertical direction, the fuse unit is arranged in the direction perpendicular to the primary guide rod, the top end of the fuse unit is connected to the primary guide rod through a spring, and the bottom end of the fuse unit is connected with a conductive coil, and a connector is led out of the conductive coil;
the bottom plate is arranged at the opening of the shell and movably clamped with the opening at the bottom end of the shell; the insulating plug is arranged on the upper surface of the bottom plate and is positioned in the shell; the top end of the insulating plug is connected to the conductive coil, the conductive coil is supported through the insulating plug, and the fuse unit is pressed on the primary guide rod.
Furthermore, two sections of shielding plates are arranged on the outer wall of the shell from top to bottom.
Furthermore, an embedded part mounting opening is formed in the side wall of the shell, an embedded part is arranged on the embedded part mounting opening, and the embedded part is connected with the connector of the conductive coil.
The utility model has the advantages of:
1) The sulfur hexafluoride fuse connector is arranged in the gas chamber filled with sulfur hexafluoride gas, so that the sulfur hexafluoride fuse connector meets higher insulation requirements, has high partial discharge level, is not aged and has better insulation performance compared with the traditional resin-insulated dry PT, has good service life, reduces the failure rate of equipment and improves the product stability; in addition, when the fuse wire of the fuse is fused and the fuse wire needs to be replaced, sulfur hexafluoride gas in the gas chamber does not need to be recovered, and the fuse wire is replaced conveniently only by opening the bottom plate and drawing out the fuse wire unit; two sections of shielding plates are arranged on the outer side of the shell and are used for shielding air gaps and defects inside products.
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 whole schematic diagram of gas transformer fusing protection device.
Fig. 2 is the utility model discloses a gas transformer fusing protection device internal structure schematic diagram.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. 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.
The fusing protection device for the gas transformer shown in fig. 1 and fig. 2 comprises a gas chamber 1, a shell 2, a connector 3, a fuse unit 4, a primary guide rod 5, a bottom plate 6 and an insulating plug 7.
The air chamber 1 is in an oval shell-shaped structure, and the bottom end of the air chamber 1 is provided with a mounting hole for mounting a shell; the shell 2 is a hollow rotary structure, and the shell 2 is arranged in the air chamber; the bottom end outline of the shell 2 is hermetically connected with the mounting hole on the air chamber 1, and the bottom end of the shell 2 is provided with an opening; sulfur hexafluoride gas is filled between the outer wall of the outer shell 2 and the inner wall of the gas chamber 1.
The connector 3 is arranged at the top end of the shell 2, the bottom end of the connector 3 is connected with the top end of the shell 2 in a sealing mode, and the top end of the connector 3 is sealed; the primary guide 5 is disposed in the connector 3 in a horizontal direction.
Fuse unit 4 sets up in shell 2 along vertical direction, and fuse unit 4 is perpendicular to the direction setting of primary guide arm 5, and the top of fuse unit 4 is connected on primary guide arm 5 through spring 41, and fuse unit 4's bottom is connected with conductive coil 8 and conductive coil 8 has drawn forth the joint.
The bottom plate 6 is arranged at the opening of the shell 1, and the bottom plate 6 is movably clamped with the opening at the bottom end of the shell 2; the insulating plug 7 is arranged on the upper surface of the bottom plate 6, and the insulating plug 7 is positioned in the shell 2; the top end of the insulating plug 7 is connected to the conductive coil 8, the conductive coil 8 is supported by the insulating plug 7, and the fuse unit 4 is pressed on the primary guide rod 5.
Two sections of shielding plates 9 are arranged on the outer wall of the shell 2 from top to bottom.
An insert mounting opening is formed in the side wall of the housing 2, an insert 10 is provided at the insert mounting opening, and the insert 10 is connected to the terminal of the conductive coil 8.
The utility model discloses a theory of operation is: the connector of the sulfur hexafluoride fuse is arranged in the gas chamber filled with sulfur hexafluoride gas, so that the higher insulation requirement is met, the partial discharge level is high, and compared with the traditional resin-insulated dry PT, the connector of the sulfur hexafluoride fuse is not aged, has better insulation performance, has a good service life, reduces the failure rate of equipment and improves the product stability; in addition, when the fuse wire of the fuse is fused and the fuse wire needs to be replaced, sulfur hexafluoride gas in the gas chamber does not need to be recovered, and the fuse wire is replaced conveniently only by opening the bottom plate and drawing out the fuse wire unit; two sections of shielding plates are arranged on the outer side of the shell and are used for shielding air gaps and defects inside products.
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. The utility model provides a gas transformer fusing protection device which characterized in that: the device comprises an air chamber, a shell, a connector, a fuse unit, a primary guide rod, a bottom plate and an insulating plug;
the air chamber is of an oval shell-shaped structure, and the bottom end of the air chamber is provided with a mounting hole for mounting the shell; the shell is of a hollow rotary body structure and is arranged in the air chamber; the bottom end contour of the shell is hermetically connected to the mounting hole on the air chamber, and the bottom end of the shell is provided with an opening; sulfur hexafluoride gas is filled between the outer wall of the shell and the inner wall of the gas chamber;
the connector is arranged at the top end of the shell, the bottom end of the connector is connected with the top end of the shell in a sealing mode, and the top end of the connector is sealed; the primary guide rod is arranged in the connector along the horizontal direction;
the fuse unit is arranged in the shell along the vertical direction, the fuse unit is arranged in the direction perpendicular to the primary guide rod, the top end of the fuse unit is connected to the primary guide rod through a spring, and the bottom end of the fuse unit is connected with a conductive coil, and a connector is led out of the conductive coil;
the bottom plate is arranged at the opening of the shell and movably clamped with the opening at the bottom end of the shell; the insulating plug is arranged on the upper surface of the bottom plate and is positioned in the shell; the top end of the insulating plug is connected to the conductive coil, the conductive coil is supported through the insulating plug, and the fuse unit is pressed on the primary guide rod.
2. A gas transformer fuse protection device in accordance with claim 1, wherein: two sections of shielding plates are arranged on the outer wall of the shell from top to bottom.
3. A gas transformer fuse protection device in accordance with claim 1, wherein: the side wall of the shell is provided with an embedded part mounting opening, an embedded part is arranged on the embedded part mounting opening, and the embedded part is connected with the joint of the conductive coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222679374.3U CN218647765U (en) | 2022-10-12 | 2022-10-12 | Gas transformer fusing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222679374.3U CN218647765U (en) | 2022-10-12 | 2022-10-12 | Gas transformer fusing protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218647765U true CN218647765U (en) | 2023-03-17 |
Family
ID=85493082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222679374.3U Active CN218647765U (en) | 2022-10-12 | 2022-10-12 | Gas transformer fusing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218647765U (en) |
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2022
- 2022-10-12 CN CN202222679374.3U patent/CN218647765U/en active Active
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