CN216720919U - Inrush current-free capacitor switching protection device - Google Patents
Inrush current-free capacitor switching protection device Download PDFInfo
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- CN216720919U CN216720919U CN202123290389.2U CN202123290389U CN216720919U CN 216720919 U CN216720919 U CN 216720919U CN 202123290389 U CN202123290389 U CN 202123290389U CN 216720919 U CN216720919 U CN 216720919U
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- capacitor switching
- side plate
- side shell
- protection device
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Abstract
The utility model discloses a surge-free capacitor switching protection device, which relates to the technical field of capacitor switching devices and comprises a capacitor switching device, wherein the side wall of the capacitor switching device is fixedly provided with a side plate, the upper end and the lower end of the side plate are both provided with connecting blocks, a side shell is attached between the two connecting blocks, and a reactor is arranged in the side shell; and the side plates are provided with locking assemblies which are used for locking the side shell on the connecting block. The utility model adopts the design of the series reactor, fixes the locking component and protects the side shell, thereby realizing the function of limiting the inrush current and inhibiting the influence of high-order harmonic waves in the circuit on the capacitor.
Description
Technical Field
The utility model relates to the technical field of capacitor switches, in particular to an inrush current-free capacitor switching protection device.
Background
The capacitor switching device, also called capacitor switching switch, is a device specially used for capacitor switching in the reactive power compensation device, and the main devices include an alternating current contactor, a thyristor switch, a compound switch, a phase selection switch synchronous switch and the like. When the capacitor is switched on for the first time, the capacitor is in an uncharged state, the current flowing into the capacitor is limited by the loop impedance of the capacitor, and the loop impedance is small, so that a large switching inrush current flows into the capacitor. The inrush current not only can generate unfavorable interference on a circuit and easily generate electric arcs and easily burn contacts on an alternating current contactor, but also can accelerate the failure of the capacitor and reduce the service life of the capacitor, even explode, so that the change is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provides an inrush current-free capacitor switching protection device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an inrush current-free capacitor switching protection device comprises a capacitor switching device, wherein a side plate is fixedly arranged on the side wall of the capacitor switching device, connecting blocks are arranged at the upper end and the lower end of the side plate, a side shell is attached between the two connecting blocks, and a reactor is arranged in the side shell;
and the side plates are provided with locking assemblies which are used for locking the side shell on the connecting block.
Optionally, the upper end and the lower end of the reactor are provided with mounting bases, the reactor is mounted on the mounting bases through long-rod bolts, and the mounting bases are mounted on the side shell through the long-rod bolts.
Optionally, the locking assembly is composed of a nut, a screw rod, a fixing block, a connecting strip and an inserting rod;
the side plate is provided with a groove, the nut is arranged in the groove and is in threaded connection with the lead screw, the fixed block is fixedly connected onto the side plate and is provided with a special-shaped cavity, the lead screw extends into the special-shaped cavity in a clearance mode and is connected with the two connecting strip shafts, one end, far away from the lead screw, of each connecting strip is connected with the corresponding inserted link shaft, and the connecting block and the side shell are both provided with inserting grooves for accommodating the inserted links.
Compared with the prior art, the utility model has the following advantages:
the utility model adopts the design of the series reactor, fixes the locking component and protects the side shell, thereby realizing the function of limiting the inrush current and inhibiting the influence of high-order harmonic waves in the circuit on the capacitor.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a locking assembly of the present invention;
FIG. 3 is a side view of the interior of the side housing of the present application;
in the figure: the device comprises a capacitor cutting device 1, side plates 2, a connecting block 3, a slot 4, a mounting base 5, a reactor 6, a locking assembly 7, a nut 71, a screw rod 72, a fixing block 73, a special-shaped cavity 74, a connecting strip 75, an inserting rod 76 and a side shell 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, an inrush current-free capacitor switching protection device comprises a capacitor switching device 1, side plates 2 are fixedly arranged on the side walls of the capacitor switching device 1, connecting blocks 3 are arranged at the upper end and the lower end of each side plate 2, a side shell 8 is attached between the two connecting blocks 3, and a reactor 6 is arranged in the side shell 8.
In the present embodiment, the reactor 6 is provided with mounting bases 5 at both upper and lower ends thereof, the reactor 6 is mounted on the mounting bases 5 by long-rod bolts, and the mounting bases 5 are mounted on the side cases 8 by long-rod bolts.
The mounting base 5 and the side shell 8 are mounted on the side shell 8 through the same long rod bolt, and the mounting base 5 can play roles in protection, isolation and heat insulation.
Referring to fig. 2 and 3, the side plate 2 is provided with a locking assembly 7, and the locking assembly 7 is used for locking the side casing 8 on the connecting block 3. The locking assembly 7 is composed of a nut 71, a screw rod 72, a fixing block 73, a connecting strip 75 and an inserting rod 76, and the specific connection mode is as follows:
the side plate 2 is provided with a groove, the nut 72 is arranged in the groove, the groove is communicated with the outside and rotates by manpower, the nut 72 is in threaded connection with the screw rod 72, the fixed block 73 is fixedly connected to the side plate 2, the fixed block 73 is provided with a special-shaped cavity 74, the screw rod 72 extends into the special-shaped cavity 74 in a clearance mode and is connected with two connecting strips 75 through shafts, one ends, far away from the screw rod 72, of the connecting strips 75 are connected with the inserting rod 76 through the shafts, and the connecting blocks 3 and the side shell 8 are both provided with inserting grooves 4 for accommodating the inserting rod 76.
In the locking assembly 7, the nut 72 is manually rotated, the nut 72 drives the screw rod 72 to axially move, the screw rod 72 drives the two connecting strips 75 to slide after moving, the connecting strips 75 drive the inserting rods 76 to move after sliding, and the inserting rods 76 are finally inserted into the slots 4 to realize synchronous fixation between the side shell 5 and the connecting block 3.
After the reactor 6 is installed in series, the locking assembly 7 is used for fixing, and the side shell 8 is used for protecting, so that the effect of limiting inrush current is achieved, the influence of high-order harmonic waves in a circuit on a capacitor is restrained, a better effect is achieved by adopting a method of connecting the reactors in series, and the inrush current is reduced along with the increase of reactance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. The utility model provides a there is not electric capacity switching protection device that shoves, includes electric capacity throw and cut ware (1), its characterized in that:
a side plate (2) is fixedly arranged on the side wall of the capacitance cutting device (1), connecting blocks (3) are arranged at the upper end and the lower end of each side plate (2), a side shell (8) is attached between the two connecting blocks (3), and a reactor (6) is arranged in each side shell (8);
and a locking assembly (7) is arranged on the side plate (2), and the locking assembly (7) is used for locking the side shell (8) on the connecting block (3).
2. The inrush current-free capacitor switching protection device as claimed in claim 1, wherein the reactor (6) is provided with mounting bases (5) at both upper and lower ends thereof, the reactor (6) is mounted on the mounting bases (5) by means of long rod bolts, and the mounting bases (5) are mounted on the side cases (8) by means of long rod bolts.
3. The inrush current-free capacitor switching protection device according to claim 1, wherein the locking assembly (7) is composed of a nut (71), a screw rod (72), a fixed block (73), a connecting bar (75) and an inserted bar (76);
the side plate (2) is provided with a groove, the nut (71) is arranged in the groove, the nut (71) is in threaded connection with the screw rod (72), the fixing block (73) is fixedly connected to the side plate (2), the fixing block (73) is provided with a special-shaped cavity (74), the screw rod (72) extends into the special-shaped cavity (74) in a gap mode and is connected with the two connecting strips (75) in a shaft mode, one ends, far away from the screw rod (72), of the connecting strips (75) are connected with the inserting rod (76) in a shaft mode, and inserting grooves (4) for containing the inserting rod (76) are formed in the connecting block (3) and the side shell (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290389.2U CN216720919U (en) | 2021-12-24 | 2021-12-24 | Inrush current-free capacitor switching protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290389.2U CN216720919U (en) | 2021-12-24 | 2021-12-24 | Inrush current-free capacitor switching protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216720919U true CN216720919U (en) | 2022-06-10 |
Family
ID=81886984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123290389.2U Active CN216720919U (en) | 2021-12-24 | 2021-12-24 | Inrush current-free capacitor switching protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216720919U (en) |
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2021
- 2021-12-24 CN CN202123290389.2U patent/CN216720919U/en active Active
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