High-voltage parallel capacitor compensation device

Abstract

The utility model discloses a high-voltage parallel capacitor compensation device, which relates to the field of parallel capacitors and comprises a shell, a round hole is arranged at the top end of the shell, an insulating ceramic with a hollow structure is fixedly connected to the inner wall of the round hole, and a wiring terminal is fixedly connected to the top of the insulating ceramic. The interior of the shell clamps the capacitor core through a clamping mechanism, and the exterior of the capacitor core is wrapped with insulation paper. The shell and the clamping mechanism are fixed through a welding assembly. And the welded and fixed welding assembly is used for fixing the position of the clamping mechanism. According to the utility model, through the arrangement of the clamping mechanism and the welding assembly, the interior of the housing is larger than the capacitor core wrapped by the insulation paper, and during installation, the capacitor core wrapped by the insulation paper can be placed into the housing conveniently and then is further fixed through the welding assembly, so that the capacitor core is prevented from sliding, and the service life of the capacitor core is prolonged. And the capacitor core can be effectively fixed.

Description

Technical Field

[0001] The utility model relates to the field of shunt capacitors, in particular to a high-voltage shunt capacitor compensation device. Background Art

[0002] Shunt capacitors are mainly used to compensate the reactive power of inductive loads in the power system to improve the power factor, improve the voltage quality, and reduce the line loss. The metal shell of the capacitor is filled with insulating dielectric oil.

[0003] For the existing capacitor core, after wrapping the insulating paper, it is fixed by a binding band, and then the fixed insulating paper and the capacitor core are inserted into the metal shell. To ensure the stability of the capacitor core, the inserted insulating paper is restricted to have no squeezing and moving space. However, this method will cause strong friction between the edge of the shell (or the encapsulation part inside the shell) and the insulating paper during the insertion process, resulting in local damage to the insulating paper. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-voltage shunt capacitor compensation device to solve the problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-voltage shunt capacitor compensation device includes a shell. A circular hole is opened at the top of the shell. The inner wall of the circular hole is fixedly connected with an insulating ceramic with a hollow structure. A wiring terminal is fixedly connected to the top of the insulating ceramic. The capacitor core is clamped inside the shell by a clamping mechanism, and the outside of the capacitor core is wrapped with insulating paper.

[0006] The shell and the clamping mechanism are fixed by a welding assembly.

[0007] The welding assembly for welding and fixing is used to fix the position of the clamping mechanism. After the welding assembly is docked with the clamping mechanism, it is welded and fixed.

[0008] The welding assembly penetrates from the outside of the shell to the inner cavity of the shell and is inserted into the clamping mechanism.

[0009] As a further scheme of the utility model: The clamping mechanism includes two clamping plates for clamping and limiting both sides of the capacitor core. Fixing ears protruding outward are formed at both ends and the top of the clamping plate. A through hole is opened at the center of the fixing ear, and a guiding shaft is inserted into the inner wall of the through hole.

[0010] External threads are formed at both ends of the outer wall of the guiding shaft, and locking nuts are threadedly connected to the outer wall of the external threads.

[0011] As a further solution of the present utility model: The welding assembly includes a flat welding plate, and one end of the welding plate is integrally formed with an insertion post penetrating into the inner cavity of the housing, and the insertion post is inserted into the guide shaft.

[0012] As a further solution of the present utility model: Insertion holes are formed at both inner ends of the guide shaft, the inner circumference of the insertion hole fits with the outer circumference of the insertion post, and a sealing ring is fixedly connected to the contact position between the end of the guide shaft and the housing.

[0013] As a further solution of the present utility model: The welding plate closely attached to the outer wall of the housing is fixed to the housing by welding.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. By providing a clamping mechanism and a welding assembly, the inside of the housing is larger than the capacitor core wrapped by insulating paper. During installation, the capacitor core wrapped by insulating paper can be conveniently lowered into the housing, and then further fixed by the welding assembly, thereby preventing the capacitor core from sliding and effectively fixing the capacitor core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is an internal structure schematic diagram of the present utility model;

[0018] Figure 3 is a connection schematic diagram of the welding assembly and the housing of the present utility model;

[0019] Figure 4 is of the present utility model Figure 3 partial enlarged view at A in.

[0020] In the figure: 1. Housing; 2. Insulating ceramic; 3. Terminal; 4. Capacitor core; 5. Guide shaft; 6. Insulating paper; 7. Clamping plate; 8. External thread; 9. Fixed ear; 10. Locking nut; 11. Welding plate; 12. Insertion post; 13. Insertion hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 4 Figures 1 to 4 , in an embodiment of the present utility model, a high-voltage shunt capacitor compensation device includes a housing 1. A circular hole is formed at the top end of the housing 1. The inner wall of the circular hole is fixedly connected with an insulating ceramic 2 having a hollow structure. A wiring terminal 3 is fixedly connected to the top of the insulating ceramic 2. The inner part of the housing 1 clamps a capacitor core 4 through a clamping mechanism. An insulating paper 6 is wrapped around the outside of the capacitor core 4; the housing 1 and the clamping mechanism are fixed through a welding assembly; the welding assembly fixed by welding is used to fix the position of the clamping mechanism. After the welding assembly is docked with the clamping mechanism, it is fixed by welding; the welding assembly penetrates from the outside of the housing 1 to the inner cavity of the housing 1 and is inserted into the clamping mechanism.

[0023] In this embodiment: A plurality of parallel capacitor cores 4 are wrapped by an insulating paper 6. Then, the clamping mechanism is used to clamp both sides of the capacitor core 4. Then, the capacitor core 4 is hoisted and placed into the housing 1, and the clamping mechanism is aligned with the welding assembly. Then, the welding assembly is passed through the housing 1 and inserted into the clamping mechanism. After the welding assembly is inserted, the welding assembly is welded to the housing 1 by welding to complete the fixation of the capacitor core 4. Then, the wiring terminal 3 and the capacitor core 4 are connected by a wire. After the connection is completed, the top plate of the housing 1 is welded to the side plate of the housing 1 to complete the assembly of the shunt capacitor.

[0024] Please pay special attention to Figure 2 and Figure 3 Figure 3 , the clamping mechanism includes two clamping plates 7 that clamp and limit both sides of the capacitor core 4. Fixing ears 9 protruding outward are formed at both ends and the top of the clamping plate 7. A through hole is formed at the center of the fixing ear 9. A guide shaft 5 is inserted into the inner wall of the through hole; external threads 8 are formed at both ends of the outer wall of the guide shaft 5, and a locking nut 10 is threadedly connected to the outer wall of the external thread 8.

[0025] In this embodiment: The two clamping plates 7 are respectively placed on both sides of the wrapped capacitor core 4. Then, the guide shaft 5 is inserted into the through hole. Then, the locking nut 10 is threadedly connected to the external thread 8, and the locking nut 10 is tightened. The fully tightened locking nut 10 effectively squeezes the clamping plate 7, and the squeezed clamping plate 7 effectively clamps the capacitor core 4.

[0026] Please pay special attention to Figure 3 and Figure 4, the welding assembly includes a flat welding plate 11. One end of the welding plate 11 is integrally formed with a plug post 12 that penetrates into the inner cavity of the housing 1. The plug post 12 is inserted into the guide shaft 5. Plug holes 13 are provided at both inner ends of the guide shaft 5. The inner circumference of the plug hole 13 matches the outer circumference of the plug post 12. A sealing ring is fixedly connected to the contact position between the end of the guide shaft 5 and the housing 1. The welding plate 11 that is in close fit with the outer wall of the housing 1 is fixed to the housing 1 by welding.

[0027] In this embodiment: After the clamping mechanism finishes clamping, through a lifting device, it is connected to the two uppermost guide shafts 5 through a connecting belt. The lifting device lifts the clamping mechanism and the capacitor core 4 through the two uppermost guide shafts 5, and then aligns them with the inner cavity of the housing 1. During the lowering process, attention needs to be paid to whether the opening on the housing 1 for the plug post 12 to be inserted is aligned with the end of the guide shaft 5. If not, the operator should cooperate to adjust it during the lowering process;

[0028] After multiple openings are aligned with multiple guide shafts 5 one by one, the lifting device and the guide shafts 5 are removed. At this time, the clamping mechanism and the capacitor core 4 are located at the center of the housing 1, and the seal at the end of the guide shaft 5 is fully pressed against the inner wall of the housing 1, thereby improving the sealing effect;

[0029] After that, align the plug post 12 with the opening and insert it. The inserted plug post 12 penetrates the opening and inserts into the plug hole 13 until the plug post 12 is completely inserted. At this time, the flat end of the welding plate 11 is in contact with the housing 1, and then a welding device is used to weld the welding plate 11 to complete the assembly.

[0030] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A high-voltage parallel capacitor compensation device, comprising a housing (1), a circular hole being formed at the top of the housing (1), an insulating ceramic (2) having a hollow structure being fixedly connected to the inner wall of the circular hole, a wiring terminal (3) being fixedly connected to the top of the insulating ceramic (2), characterized in that: The capacitor core (4) is clamped inside the housing (1) by a clamping mechanism, and the outside of the capacitor core (4) is wrapped with insulating paper (6); The housing (1) and the clamping mechanism are fixed via a welding assembly; The welded and fixed welding assembly is used to fix the position of the clamping mechanism, and the welding assembly is welded and fixed after being butted against the clamping mechanism; The welding assembly penetrates from the outside of the shell (1) to the inner cavity of the shell (1) and is plugged into the clamping mechanism.

2. A high voltage parallel capacitor compensation device according to claim 1, characterized in that: The clamping mechanism comprises two clamping plates (7) for clamping and limiting the two sides of the capacitor core (4); both ends and the top of the clamping plates (7) are formed with fixing ears (9) protruding outwards; a through hole is provided at the center of the fixing ear (9); and a guide shaft (5) is inserted into the inner wall of the through hole; External threads (8) are formed on both ends of the outer wall of the guide shaft (5), and the outer wall of the external thread (8) is threadedly connected with a locking nut (10).

3. A high voltage parallel capacitor compensation device according to claim 2, characterized in that: The welding assembly comprises a flat welding plate (11), one end of which is integrally formed with a plug-in column (12) that penetrates into the inner cavity of the outer shell (1), and the plug-in column (12) is plugged into the guide shaft (5).

4. A high voltage parallel capacitor compensation device according to claim 3, characterized in that: Both ends of the guide shaft (5) are provided with plug holes (13), the inner circumference of the plug hole (13) matches the outer circumference of the plug column (12), and a sealing ring is fixedly connected to the contact position between the end of the guide shaft (5) and the housing (1).

5. A high voltage parallel capacitor compensation device according to claim 4, characterized in that: The welding plate (11) which is in close contact with the outer wall of the outer shell (1) is fixed to the outer shell (1) by welding.

Images