Body positioning damping structure of low-noise extra-high voltage shunt reactor

Abstract

The utility model belongs to the field of shunt reactors, and relates to a body positioning damping structure of a low-noise extra-high voltage shunt reactor, which comprises a damping structure I, a damping structure II and a damping structure III, the damping structure I is fixedly arranged between an iron core foot pad and the bottom of an oil tank, and the damping structure II is fixedly arranged between a lower cross beam and the bottom of the oil tank. The first damping structure and the second damping structure each comprise a paperboard, cork rubber and a damping rubber mat which are sequentially stacked layer by layer from top to bottom, the third damping structure comprises a damping rubber mat, an insulating positioning bowl, a positioning pipe and a positioning pin, the lower end of the positioning pipe is welded to the upper surface of the oil tank bottom, the damping rubber mat is arranged at the bottom of the positioning pipe, and the insulating positioning bowl is arranged above the damping rubber mat; the upper end of the positioning pin is welded to the lower surface of the lower clamping piece, the positioning pin corresponds to the insulating positioning bowl, and the insulating positioning bowl is filled with epoxy resin. The composite damping system is matched with pouring positioning of the reactor body, vibration energy transmission of the reactor body is reduced, and noise of the reactor is lowered.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shunt reactor technical field, and specifically relates to a low-noise extra-high voltage shunt reactor body positioning damping structure. BACKGROUND

[0002] The extra-high voltage shunt reactor is an indispensable core equipment component in the extra-high voltage power transmission network, and depth sustains the safe and efficient operation of the whole power transmission system. Although the extra-high voltage shunt reactor has remarkable effect in the power transmission network, the noise and vibration problems generated in the operation of the extra-high voltage shunt reactor bring many thorny problems to the steady promotion and long-term operation and maintenance of the power transmission and transformation project.

[0003] The vibration of the reactor is mostly generated by the reactor core, and is transmitted to the oil tank wall through the core pad foot, lower crossbeam and other components, and then penetrates the oil tank to the outside. Therefore, it is necessary to improve and innovate the installation structure of the reactor body to reduce the noise of the extra-high voltage reactor. SUMMARY

[0004] In view of the above technical problems, the utility model provides a novel reactor body positioning damping structure, which reduces structural noise by reducing vibration energy transmission. The design scheme for achieving the purpose of the utility model is as follows:

[0005] The reactor body positioning damping structure of the low-noise extra-high voltage shunt reactor comprises a damping structure one, a damping structure two and a damping structure three, the damping structure one is fixedly installed between the core pad foot and the bottom of the oil tank, the damping structure two is fixedly installed between the lower crossbeam and the bottom of the oil tank, the damping structure one and the damping structure two each comprise paperboard, soft rubber and shock absorbing rubber pad which are stacked from top to bottom, the damping structure three comprises shock absorbing rubber pad, insulating positioning bowl, positioning pipe and positioning pin, the lower end of the positioning pipe is welded on the upper surface of the bottom of the oil tank, the shock absorbing rubber pad is placed at the bottom of the positioning pipe, the insulating positioning bowl is placed in the positioning pipe above the shock absorbing rubber pad, the upper end of the positioning pin is welded on the lower surface of the lower clamp, the position of the positioning pin corresponds to the insulating positioning bowl, and the insulating positioning bowl is filled with epoxy resin.

[0006] Preferably, the shock absorbing rubber pad is made of NP rubber.

[0007] The utility model has the advantages of:

[0008] The reactor body positioning damping structure of the low-noise extra-high voltage shunt reactor provided by the utility model reduces the vibration energy transmission of the reactor body and reduces the noise of the reactor by effectively cooperating the composite damping system with the reactor body pouring positioning mode. The overall noise reduction effect of the structure is remarkable, and the structure has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0009] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0010] Fig. 1 This is a schematic diagram of the damping structure at the bottom of the oil tank and the iron core pad of this utility model embodiment;

[0011] Fig. 2 This is a schematic diagram of the second damping structure at the bottom of the oil tank and the lower crossbeam of this utility model embodiment;

[0012] Fig. 3 This is a schematic diagram of the damping structure three at the lower part of the lower clamp in an embodiment of this utility model;

[0013] Among them, 1. Fuel tank bottom, 2. Cardboard, 3. Cork rubber, 4. Shock-absorbing rubber pad, 5. Insulating positioning bowl, 6. Epoxy resin, 7. Lower clamp, 8. Iron core pad, 9. Lower crossbeam, 10. Positioning tube, 11. Positioning pin. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] like Figs. 1-3 As shown, the damping structure of the low-noise ultra-high voltage parallel reactor includes: damping structure one, damping structure two, and damping structure three.

[0016] The first damping structure is fixedly installed between the iron core pad 8 and the bottom of the oil tank 1, and the second damping structure is fixedly installed between the lower crossbeam 9 and the bottom of the oil tank 1. The first damping structure and the second damping structure are the same, both including cardboard 2, cork rubber 3 and shock-absorbing pad 4 stacked in sequence from top to bottom.

[0017] In this embodiment of the invention, the shock-absorbing rubber pad 4 can be made of NP rubber, which is specially developed and independently named by Shenma Company. NP rubber is used to distinguish it from other types of rubber, and the type of NP rubber is NP70. NP rubber has good compression and rebound characteristics, which can reduce the vibration transmission of the internal structure of the fuel tank. At the same time, it has a high loss factor and can convert mechanical energy into heat energy, so it can be used as a damping material. In this embodiment of the invention, the cardboard 2, cork rubber 3, and shock-absorbing rubber pad 4 are arranged between the iron core pad 8 and the bottom of the fuel tank 1, and between the lower crossbeam 9 and the bottom of the fuel tank 1. The damping structure can effectively dissipate mechanical energy, effectively reduce the vibration transmission between the iron core pad 8 and the lower crossbeam 9 and the fuel tank, and reduce the structural noise of the fuel tank.

[0018] The lower clamp 7 is one of the components in the body, and the lower clamp 7 is used for fastening the lower iron yoke, and the damping structure three is fixedly installed at the lower part of both ends of the lower clamp 7, and the damping structure three is a pouring type positioning damping structure, and the damping structure three comprises a shock absorbing rubber pad 4, an insulating positioning bowl 5, a positioning pipe 10 and a positioning pin 11, and the diameter of the positioning pipe 10 is greater than that of the insulating positioning bowl 5. The lower end of the positioning pipe 10 is fixedly connected with the upper surface of the tank bottom 1 in a welding mode, the shock absorbing rubber pad 4 is arranged at the bottom of the positioning pipe 10, the shock absorbing rubber pad 4 is adjacent to the tank bottom 1, the insulating positioning bowl 5 is arranged in the positioning pipe 10 above the shock absorbing rubber pad 4, the positioning pin 11 is fixedly connected with the lower surface of the lower clamp 7 in a welding mode, the positioning pin 11 corresponds to the insulating positioning bowl 5, the insulating positioning bowl 5 is filled with quick-drying epoxy resin 6, and the epoxy resin 6 is used for connecting and fixing the positioning pin 11 after solidification. The shock absorbing rubber pad 4 can reduce the vibration transmission of the internal structure of the tank, and after the body is positioned, the epoxy resin 6 can ensure that the connection between the reactor body and the tank is firm and firm, so that the reactor body is not loosened due to the vibration of the reactor.

[0019] The technical features not described in detail in the embodiments of the utility model are prior art or conventional technical means, and will not be described here.

[0020] Finally, it should be noted that: the above embodiments are only specific embodiments of the utility model, which are used to illustrate the technical solutions of the utility model, but not to limit it, and the protection scope of the utility model is not limited to this. Those skilled in the art should understand that: any person skilled in the art can modify or easily think of changes to the technical solutions recorded in the above embodiments within the technical range disclosed by the utility model, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A damping structure for positioning the body of a low-noise extra-high voltage shunt reactor, comprising a damping structure one, a damping structure two and a damping structure three, characterized in that, The damping structure one is fixedly installed between the core pad foot (8) and the oil tank bottom (1), the damping structure two is fixedly installed between the lower cross beam (9) and the oil tank bottom (1), the damping structure one and the damping structure two both include paperboards (2) which are stacked from top to bottom, soft rubber (3) and shock absorbing rubber pads (4) which are stacked in turn, the damping structure three includes the shock absorbing rubber pad (4), the insulating positioning bowl (5), the positioning tube (10) and the positioning pin (11), the lower end of the positioning tube (10) is welded on the upper surface of the oil tank bottom (1), the bottom of the positioning tube (10) is placed with the shock absorbing rubber pad (4), the insulating positioning bowl (5) is placed in the positioning tube (10) above the shock absorbing rubber pad (4), the upper end of the positioning pin (11) is welded on the lower surface of the lower clamping piece (7), the position of the positioning pin (11) corresponds to the insulating positioning bowl (5), and the insulating positioning bowl (5) is filled with the epoxy resin (6).

2. The body positioning damping structure of a low-noise EHV shunt reactor according to claim 1, characterized in that, The shock absorbing rubber pad (4) adopts NP rubber.

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