CN218647763U - External three-phase common box type current transformer assembly structure for 40.5kVGIS - Google Patents
External three-phase common box type current transformer assembly structure for 40.5kVGIS Download PDFInfo
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- CN218647763U CN218647763U CN202222918736.XU CN202222918736U CN218647763U CN 218647763 U CN218647763 U CN 218647763U CN 202222918736 U CN202222918736 U CN 202222918736U CN 218647763 U CN218647763 U CN 218647763U
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Abstract
The utility model relates to a 40.5kVGIS is with external three-phase box current transformer assembly structure altogether, its characterized in that: the device comprises a shell, a cylinder, an insulating plate, a screw, a conducting rod and a bridging row; the three-phase current transformer coil is arranged on a shielding shell and is fixed by adopting an insulating pressing plate in a compression joint mode, and the transformer coil is completely isolated from the GIS closed air chamber; the structure is convenient to install and replace, and the performance of the mutual inductor is stable; adopt external three-phase to be box structure altogether, eliminated the influence of current transformer coil to GIS closed air chamber insulating properties completely, the external daily inspection, the maintenance and the later stage that make things convenient for the mutual-inductor of mutual-inductor coil are changed or the dilatation to current transformer simultaneously, have effectively improved product assembly efficiency.
Description
Technical Field
The utility model relates to a current transformer technical field especially relates to a 40.5kVGIS is with external three-phase is box current transformer assembly structure altogether.
Background
The current transformers for the 40.5kV GIS switch equipment in the market are divided into two types; a mutual inductor coil is built in (a traditional GIS structure) in a three-phase common box structure, the structure cannot solve the problem that the mutual inductor coil has an influence on insulation of a GIS closed air chamber (SF 6), the requirement on installation cleanliness is high, and the daily routing inspection of the mutual inductor is inconvenient (cannot be directly visually observed); the other type is that three-phase branch case mutual-inductor coil is external (transmission stand alone type structure), and this structure is generally used for outdoor volume great, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a 40.5kVGIS is with external three-phase box current transformer assembly structure altogether, can solve traditional GIS structure in the mutual-inductor coil to GIS seal the influence of air chamber insulation reliability to and the complicated bulky problem of assembly structure.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a 40.5kVGIS is with external three-phase is box current transformer assembly structure altogether, its innovation point lies in: the device comprises a shell, a cylinder, an insulating plate, a screw, a conducting rod and a jumper;
the shell is of a cylindrical structure, and the bottom end of the shell is provided with an opening and the top end is closed; a connecting flange is arranged at the bottom end of the shell; the top end of the shell is provided with a through hole for accommodating the conducting rod to pass through, and the through hole is provided with three annular arrays arranged on the top end of the shell;
the cylinder body is provided with three cylindrical structures, openings are formed in two ends of the cylinder body, and the bottom end of the cylinder body corresponds to the position of the through hole in the top end of the shell respectively; the top end of the cylinder is provided with a cover plate, the cover plate is provided with a through hole for the conductive rod to pass through, and the through hole on the cover plate and the through hole on the top end of the shell are coaxially arranged;
the insulating plate is arranged on the outer contour of the cylinder body and is provided with through holes for the three cylinder bodies to pass through; a gap is reserved between the through hole on the insulating plate and the outer contour of the cylinder, and the insulating plate can move and be adjusted along the outer wall of the cylinder; the insulating plate is also provided with a screw connecting hole; a coil is wound on the outer side of the cylinder and is positioned between the insulating plate and the cover plate;
the number of the screw rods is four, one end of each screw rod is fixedly connected to the lower surface of the cover plate, the other end of each screw rod is matched with a screw rod connecting hole in the insulating plate, the screw rods are connected with the insulating plate through nuts, and the coils are tightly pressed between the lower surface of the cover plate and the insulating plate;
the number of the conducting rods is three, the conducting rods are arranged in the cylinder body, two ends of each conducting rod extend out of the cylinder body, one end of each conducting rod is located in the shell, and the other end of each conducting rod extends to the position above the cover plate; a conductor is arranged at the end part of the conducting rod above the cover plate;
the cross-over bar is arranged on the outer sides of the shell and the barrel, and two ends of the cross-over bar are fixed to the edge of the upper surface of the cover plate and the upper surface of the connecting flange at the bottom end of the shell respectively.
Furthermore, an insulating flange is arranged at the joint of the bottom end of the barrel and the shell, and the top end of the shell, the insulating flange and the bottom end of the barrel are connected and locked through bolts.
The utility model has the advantages that:
1) The utility model discloses a three-phase current transformer coil is installed on a shielding shell, and is fixed by adopting insulation pressing plate crimping, and the transformer coil is completely isolated from a GIS closed air chamber; the structure is convenient to install and replace, and the performance of the mutual inductor is stable; adopt external three-phase to be box structure altogether, eliminated the influence of current transformer coil to GIS closed air chamber insulating properties completely, the external daily inspection, the maintenance and the later stage that make things convenient for the mutual-inductor of mutual-inductor coil are changed or the dilatation to current transformer simultaneously, have effectively improved product assembly efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a three-dimensional structure schematic diagram of the external three-phase common-box type current transformer assembly structure for 40.5kVGIS of the present invention.
Fig. 2 is a schematic structural diagram of a main view of the external three-phase common box type current transformer assembly structure for 40.5kVGIS of the present invention.
Fig. 3 is a schematic sectional view of the assembly structure of the external three-phase common-box type current transformer for 40.5kVGIS of the present invention.
Fig. 4 is a schematic partial structure diagram of an assembly structure of the external three-phase common-box type current transformer for 40.5kVGIS of the present invention.
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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
The external three-phase common box type current transformer assembly structure for the 40.5kVGIS shown in the figures 1 to 4 comprises a shell 1, a cylinder 2, an insulating plate 3, a screw rod 4, a conducting rod 5 and a cross-over row 6.
The shell 1 is of a cylindrical structure, and the bottom end of the shell 1 is open and the top end is closed; the bottom end of the shell 1 is provided with a connecting flange; the top end of the shell 1 is provided with a through hole for accommodating the conducting rod 5 to pass through, and the through hole is provided with three through holes which are arranged on the top end of the shell 1 in an annular array.
The cylinder body 2 is provided with three cylindrical structures, openings are formed in two ends of the cylinder body, and the bottom end of the cylinder body 2 corresponds to the position of the through hole in the top end of the shell respectively; the top of barrel 2 is provided with apron 21, and opens the through-hole that holds the conducting rod and pass on the apron 21, and the through-hole on the apron 21 sets up with the through-hole coaxial on casing 1 top.
The insulating plate 3 is arranged on the outer contour of the cylinder 2, and the insulating plate 3 is provided with through holes for the three cylinders 2 to pass through; a gap is reserved between the through hole on the insulating plate 3 and the outer contour of the cylinder 2, and the insulating plate 3 can move and be adjusted along the outer wall of the cylinder 2; the insulating plate 3 is also provided with a screw connecting hole; a coil 22 is wound around the outer side of the cylinder 2, and the coil 22 is located between the insulating plate 3 and the cover plate 21.
The number of the screws 4 is four, one end of each screw 4 is fixedly connected to the lower surface of the cover plate 21, the other end of each screw 4 is matched with a screw 4 connecting hole in the insulating plate 3, the screws are connected with the insulating plate 3 through nuts, and the coil 22 is tightly pressed between the lower surface of the cover plate 21 and the insulating plate 3.
The number of the conducting rods 5 is three, the conducting rods 5 are arranged in the cylinder 2, two ends of each conducting rod 5 extend out of the cylinder, one end of each conducting rod 5 is located in the shell 1, and the other end of each conducting rod 5 extends to the position above the cover plate 21; the end of the conductor bar 5 above the cover plate 21 is provided with a conductor.
The bridging row 6 is arranged outside the shell and the barrel, and two ends of the bridging row 6 are respectively fixed on the edge of the surface on the cover plate and the upper surface of the connecting flange at the bottom end of the shell 1.
The bottom of barrel 2 and the linking department of casing 1 are provided with insulating flange 23, and lock through bolted connection between the top of casing 1, insulating flange 23 and the bottom of barrel 2.
The utility model discloses a theory of operation is: the three-phase current transformer coil is arranged on a shielding shell and is fixed by adopting an insulating pressing plate in a compression joint mode, and the transformer coil is completely isolated from a GIS closed air chamber; the structure is convenient to install and replace, and the performance of the mutual inductor is stable; adopt external three-phase to be box structure altogether, eliminated the influence of current transformer coil to GIS closed air chamber insulating properties completely, the external daily inspection, the maintenance and the later stage that make things convenient for the mutual-inductor of mutual-inductor coil are changed or the dilatation to current transformer simultaneously, have effectively improved product assembly efficiency.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a 40.5kVGIS shares box current transformer assembly structure with external three-phase which characterized in that: the device comprises a shell, a cylinder, an insulating plate, a screw, a conducting rod and a bridging row;
the shell is of a cylindrical structure, and the bottom end of the shell is provided with an opening, and the top end of the shell is closed; the bottom end of the shell is provided with a connecting flange; the top end of the shell is provided with a through hole for accommodating the conducting rod to pass through, and the through hole is provided with three annular arrays arranged on the top end of the shell;
the cylinder body is provided with three cylindrical structures, openings are formed in two ends of the cylinder body, and the bottom end of the cylinder body corresponds to the position of the through hole in the top end of the shell respectively; the top end of the cylinder is provided with a cover plate, the cover plate is provided with a through hole for the conductive rod to pass through, and the through hole on the cover plate and the through hole on the top end of the shell are coaxially arranged;
the insulating plate is arranged on the outer contour of the cylinder body and is provided with through holes for the three cylinder bodies to pass through; a gap is reserved between the through hole on the insulating plate and the outer contour of the cylinder, and the insulating plate can move and be adjusted along the outer wall of the cylinder; the insulating plate is also provided with a screw connecting hole; a coil is wound on the outer side of the cylinder and is positioned between the insulating plate and the cover plate;
the number of the screw rods is four, one end of each screw rod is fixedly connected to the lower surface of the cover plate, the other end of each screw rod is matched with a screw rod connecting hole in the insulating plate, the screw rods are connected with the insulating plate through nuts, and the coils are tightly pressed between the lower surface of the cover plate and the insulating plate;
the number of the conducting rods is three, the conducting rods are arranged in the cylinder, two ends of each conducting rod extend out of the cylinder, one end of each conducting rod is located in the shell, and the other end of each conducting rod extends to the position above the cover plate; a conductor is arranged at the end part of the conducting rod above the cover plate;
the bridging row is arranged on the outer sides of the shell and the barrel, and two ends of the bridging row are fixed to the edge of the upper surface of the cover plate and the upper surface of the connecting flange at the bottom end of the shell respectively.
2. The external three-phase common box type current transformer assembling structure for 40.5kVGIS according to claim 1, wherein: and an insulating flange is arranged at the joint of the bottom end of the barrel and the shell, and the top end of the shell, the insulating flange and the bottom end of the barrel are connected and locked through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918736.XU CN218647763U (en) | 2022-11-03 | 2022-11-03 | External three-phase common box type current transformer assembly structure for 40.5kVGIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918736.XU CN218647763U (en) | 2022-11-03 | 2022-11-03 | External three-phase common box type current transformer assembly structure for 40.5kVGIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218647763U true CN218647763U (en) | 2023-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222918736.XU Active CN218647763U (en) | 2022-11-03 | 2022-11-03 | External three-phase common box type current transformer assembly structure for 40.5kVGIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218647763U (en) |
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2022
- 2022-11-03 CN CN202222918736.XU patent/CN218647763U/en active Active
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