CN204010960U

CN204010960U - A kind of noise-reduction transformer

Info

Publication number: CN204010960U
Application number: CN201420461861.5U
Authority: CN
Inventors: 袁妙增
Original assignee: TAIZHOU BAIRUI ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: TAIZHOU BAIRUI ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2014-08-16
Filing date: 2014-08-16
Publication date: 2014-12-10
Anticipated expiration: 2024-08-16

Abstract

The utility model discloses a kind of noise-reduction transformer, comprise casing, be located at iron core and coil in casing, two up and down of described iron core is provided with symmetrical damping device, and described damping device comprises buffer board, and upper buffer board below is provided with the lower buffer board with its symmetry; Position, described upper buffer board lower surface edge is provided with some damping springs that are circularly and evenly distributed, and damping spring is between upper buffer board and lower buffer board; The center of described upper buffer board upper surface, lower buffer board lower surface is respectively equipped with latch and the mouth of pipe, and described damping device is fixed on casing by the latch of upper buffer board upper surface; Described core ends is fixed in the mouth of pipe; One rubber pneumatic bag one end is connected with upper buffer board lower surface center, and this end and upper buffer board intersection are provided with one-way air inlet hole; The described rubber pneumatic bag other end is connected with lower buffer board upper surface center.Noise-reduction transformer of the present utility model is simple in structure, and noise reduction effect is good.

Description

A kind of noise-reduction transformer

Technical field

The utility model relates to a kind of noise-reduction transformer.

Background technology

Transformer noise is mainly derived from the noise of transformer body and the noise of transformer cooling device.Wherein transformer body noise comes from the vibration of transformer body, and the having its source in of transformer body vibration: the iron coring vibration that the magnetostriction of silicon steel sheet causes.When so-called magnetostriction is exactly iron core excitation, will increases, and will dwindle perpendicular to the size of magnetic line of force direction silicon steel sheet along the size of magnetic line of force direction silicon steel sheet, the variation of this size is called magnetostriction.Magnetostriction makes the periodically vibration along with the variation of excitation frequency unshakable in one's determination.

Magnetostriction vibration unshakable in one's determination passes to oil tank wall by feet unshakable in one's determination and insulating oil two paths, tank wall is vibrated and produce this bulk noise, and to surrounding, launching equably with the form of sound wave, the reason of transformer body noise generation that Here it is.

Transformer can be considered an elastic oscillating system being comprised of various structural members, and the shock wave of iron core and miscellaneous part cause all parts to produce resonance, cause that noise is increased sharply.

Existing noise-reduction transformer by the vibration with prevention iron core by connection damping spring at iron core two ends, avoids working medium radiation towards periphery to produce noise conventionally.Although damping spring can cushion the overwhelming majority vibrations of iron core, this damping spring that only depends on bears vibrations, and in the course of time, the resonance of all parts easily damages damping spring, even bursts apart, and causes the damping spring life-span to shorten.

Summary of the invention

The utility model will solve existing noise-reduction transformer and only by damping spring, reduce the noise that iron core vibrations bring, and resonance causes short technical problem of damping spring life-span.

For solving the problems of the technologies described above, the technical solution of a kind of noise-reduction transformer of the utility model is:

A kind of noise-reduction transformer, comprise casing, be located at iron core and coil in casing, it is characterized in that: two up and down of described iron core is provided with symmetrical damping device, and described damping device comprises buffer board, upper buffer board below is provided with the lower buffer board with its symmetry; Position, described upper buffer board lower surface edge is provided with some damping springs that are circularly and evenly distributed, and damping spring is between upper buffer board and lower buffer board; Weld with upper buffer board, lower buffer board respectively at described damping spring two ends; The center of described upper buffer board upper surface, lower buffer board lower surface is respectively equipped with latch and the mouth of pipe, and described damping device is fixed on casing by the latch of upper buffer board upper surface; Described core ends is fixed in the mouth of pipe; One rubber pneumatic bag one end is connected with upper buffer board lower surface center, and this end and upper buffer board intersection are provided with one-way air inlet hole; The described rubber pneumatic bag other end is connected with lower buffer board upper surface center.

Described rubber pneumatic bag is layered laminate.

Between described iron core and the mouth of pipe, be equipped with silicone rubber pad between latch and casing.

The technique effect that the utility model can reach is:

Compared with prior art, adopt the noise-reduction transformer of the utility model structure, at two of iron core, damping device has been installed, damping device is except damping spring, rubber pneumatic bag in the middle of also comprising, when buffer board receives the vibrations that iron core brings instantly, because the damping capaicty of rubber pneumatic bag, pliability and ageing resistance are stronger, rubber pneumatic bag has absorbed most shock waves; And the shock wave of small part is by the double absorption of damping spring and silicone rubber pad, realized triple vibration isolation, the reduction of amplitude peak noise, also reduce the damage to damping spring that the resonance of knowing clearly brings.And, the anti-pressure ability that rubber pneumatic bag and damping spring common combination form, the impact that can also avoid accidental external strength to bring transformer.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:

Fig. 1 is the structural representation of noise-reduction transformer of the present utility model;

Fig. 2 is the stereogram of damping device of the present utility model.

Embodiment

As shown in Figure 1 and Figure 2, the utility model provides a kind of noise-reduction transformer, comprise casing 1, be located at iron core 2 and coil in casing 1, two up and down of described iron core 2 is provided with symmetrical damping device 3, described damping device 3 comprises buffer board 4, and upper buffer board 4 belows are provided with the lower buffer board 5 with its symmetry; Described upper buffer board 4 positions, lower surface edge are provided with some damping springs that are circularly and evenly distributed 6, and damping spring 6 is between upper buffer board 4 and lower buffer board 5; Weld with upper buffer board 4, lower buffer board 5 respectively at described damping spring 6 two ends; The center of described upper buffer board 4 upper surfaces, lower buffer board 5 lower surfaces is respectively equipped with latch 8 and the mouth of pipe 9, and described damping device 3 is fixed on casing 1 by the latch 8 of upper buffer board 4 upper surfaces; Described iron core 2 ends are fixed in the mouth of pipe 9; One rubber pneumatic bag 7 one end are connected with upper buffer board 4 lower surface centers, and this end and upper buffer board 4 intersections are provided with one-way air inlet hole 10; Described rubber pneumatic bag 7 other ends are connected with lower buffer board 5 upper surface centers.

Described rubber pneumatic bag 7 is layered laminate.The shape of lamination makes rubber pneumatic bag 7 be flowed and to be carried out damping vibration ripple by its internal gas, can also make shock wave gradually weaken in the situation that successively transmitting.

Between described iron core 2 and the mouth of pipe 9, be equipped with silicone rubber pad between latch 8 and casing 1.

Rubber pneumatic bag 7 of the present utility model is inflated by one-way air inlet hole, one-way due to its air admission hole, so after worrying rubber pneumatic bag 7 inflations there is not the situation of leaking gas, the situation that the gas while there will not be rubber pneumatic bag 7 by gas flow compensator or trimmer pressure in rubber pneumatic bag 7 leaks outside in meeting.

Noise-reduction transformer of the present utility model is by arranging damping device 3 between the two at iron core 2 and casing 1, reach the object of damping noise reduction, and in damping device 3, use Liao San road vibration isolation module, respectively damping spring 6, rubber pneumatic bag 7 and silicone rubber pad, wherein damping spring 6 is useed the main modular into damping noise reduction as with rubber pneumatic bag 7, extend useful life separately, strengthened the effect of damping noise reduction simultaneously.

A kind of noise-reduction transformer above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment is just for helping to understand the technical scheme that the utility model discloses; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.

Claims

1. a noise-reduction transformer, comprise casing, be located at iron core and coil in casing, it is characterized in that: two up and down of described iron core is provided with symmetrical damping device, and described damping device comprises buffer board, upper buffer board below is provided with the lower buffer board with its symmetry; Position, described upper buffer board lower surface edge is provided with some damping springs that are circularly and evenly distributed, and damping spring is between upper buffer board and lower buffer board; Weld with upper buffer board, lower buffer board respectively at described damping spring two ends; The center of described upper buffer board upper surface, lower buffer board lower surface is respectively equipped with latch and the mouth of pipe, and described damping device is fixed on casing by the latch of upper buffer board upper surface; Described core ends is fixed in the mouth of pipe; One rubber pneumatic bag one end is connected with upper buffer board lower surface center, and this end and upper buffer board intersection are provided with one-way air inlet hole; The described rubber pneumatic bag other end is connected with lower buffer board upper surface center.

2. a kind of noise-reduction transformer according to claim 1, is characterized in that: described rubber pneumatic bag is layered laminate.

3. a kind of noise-reduction transformer according to claim 1, is characterized in that: between described iron core and the mouth of pipe, be equipped with silicone rubber pad between latch and casing.