CN216519373U - Low-noise box body structure of power equipment - Google Patents
Low-noise box body structure of power equipment Download PDFInfo
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- CN216519373U CN216519373U CN202122828670.0U CN202122828670U CN216519373U CN 216519373 U CN216519373 U CN 216519373U CN 202122828670 U CN202122828670 U CN 202122828670U CN 216519373 U CN216519373 U CN 216519373U
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Abstract
The utility model is suitable for the technical field of transformer vibration reduction, and provides a low-noise box body structure of power equipment, which comprises a box body for accommodating corresponding power equipment, a plurality of rib plates arranged on the box body, and sealing covers arranged at two ends of the box body, wherein the plurality of rib plates are arranged on the outer surface of the box body in an arrayed manner, a plurality of accommodating cavities are formed in the plurality of rib plates and the sealing covers, and damping particles are arranged in the accommodating cavities. The plurality of rib plates which are arranged on the box body at equal intervals and the seal covers which are arranged at two ends of the box body are respectively provided with the containing cavity, the containing cavities are filled with damping particles, and vibration energy generated in the axial direction of the winding is consumed through inelastic collision and friction among the damping particles and between the damping particles and the walls of the containing cavities, so that the vibration of elements such as an iron core and a winding in the transformer is restrained, noise radiated due to the vibration is reduced, and the vibration reduction effect is good.
Description
Technical Field
The utility model belongs to the technical field of transformer vibration reduction, and particularly relates to a low-noise box body structure of power equipment.
Background
The noise generated by the operation of the transformer can seriously affect the life quality of nearby residents, and the generated low-frequency noise has the characteristics of strong penetrability and slow attenuation. The sources of noise generated by the transformer are vibration generated by magnetostriction of an iron core in the transformer and vibration generated by electromagnetic force of a winding, and the vibration generated by operation of a fan and an oil pump is also generated for the transformer with a cooling system. These vibrations are coupled to the tank through the pipes and radiate severe noise.
At present, the noise reduction measures adopted for the transformer are divided into two types, one type is noise reduction from the angle of vibration isolation and vibration reduction, if a vibration isolation base is arranged for the transformer, a rigid connecting part is arranged into elastic connection and the like, but the effect of the vibration isolation base has great benefit only when the influence of noise through solid transmission is received, the service life of materials adopted by the elastic connection is not high under the action of electromagnetic force of an electric field, and the performance failure is easily caused. The other type is to reduce noise from the angle of sound insulation and sound absorption, for example, a sound insulation and sound absorption material is attached to the inside or the outside of a transformer box body, an integral packaging measure is adopted for the transformer, the transformer is wrapped inside a sound absorption and sound insulation cover, and the like, but although the sound insulation effect on the middle and high frequency noise is better, the sound insulation effect on the low frequency noise is poorer, and the heat dissipation problem in the transformer is easily caused by adopting the measure, which means that the power requirement of a fan is higher and the generated noise is larger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a low-noise box body structure of power equipment, which can effectively solve the problems.
The utility model is realized by the following steps:
a power equipment low noise box structure comprising:
the box body is used for accommodating corresponding power equipment;
the box body is provided with a plurality of rib plates, the plurality of rib plates are arranged on the outer surface of the box body, and a plurality of accommodating cavities are formed in the plurality of rib plates;
the sealing covers are arranged at two ends of the box body, and a plurality of accommodating cavities are formed in the sealing covers; and
and the damping particles are arranged in the accommodating cavity.
As further improvement, the low-noise box structure of the power equipment further comprises a protective cover arranged outside the box body, and a mounting seat is arranged at the bottom of the protective cover.
As a further improvement, the protective cover is provided with a vibration reduction assembly, and the vibration reduction assembly comprises a vibration reducer body arranged on the protective cover, an accommodating cavity arranged on the vibration reducer body, and damping particles arranged in the accommodating cavity.
As a further improvement, the protective cover is provided with a filter hole.
As a further improvement, the box structure further comprises a plurality of groups of shock absorbers sleeved on the box body, wherein cavities are arranged in the shock absorbers, and damping particles are filled in the cavities.
As a further improvement, a plurality of groups of the vibration dampers and a plurality of the rib plates are arranged alternately.
As a further improvement, the box body is of a polygonal prism structure.
As a further improvement, the filling material of the damping particles in the accommodating cavity is 10% -100%; the diameter of the damping particles in the accommodating cavity is 0.1-10 mm.
As a further improvement, the damping particles can be made of one or more of iron-based particles, aluminum-based particles, nickel-based particles, tungsten-based particles, chromium-based particles, sodium-based particles, magnesium-based particles, manganese-based particles, calcium-based particles, copper-based particles, zinc-based particles, scandium-based particles, titanium-based particles, glass particles, oxide ceramic particles, carbide ceramic particles and glass ceramic particles.
As a further improvement, a radiator is arranged on the inner side of the protective cover.
The utility model has the beneficial effects that: the utility model sets the containing cavities on the plurality of ribbed plates which are arranged on the box body at equal intervals and the seal covers which are arranged at two ends of the box body, fills the damping particles in the containing cavities, and consumes the vibration energy generated in the axial direction of the winding through the inelastic collision and friction among the damping particles and between the damping particles and the walls of the containing cavities, thereby inhibiting the vibration of elements such as the iron core, the winding and the like in the transformer, reducing the noise radiated by the vibration, and having good vibration damping effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a low-noise box structure of an electrical device according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a low-noise box structure of an electrical device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a protective cover according to an embodiment of the present invention.
Reference numerals:
10-a box body; 20-ribbed plate; 30-sealing the cover; 40-an accommodating cavity; 50-damping particles; 60-a shock absorber; 70-a protective cover; 80-a mounting seat; 71-a vibration damping assembly; 72-filter the hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example one
Referring to fig. 1, a low noise box structure of an electric power device includes:
the box body 10 is used for accommodating corresponding power equipment;
the box body comprises a box body 10, and is characterized in that a plurality of rib plates 20 are arranged on the box body 10, the plurality of rib plates 20 are arranged on the outer surface of the box body 10, and a plurality of accommodating cavities 40 are arranged on the plurality of rib plates;
the box body 10 comprises a box body 30 and a plurality of sealing covers 30, wherein the box body 10 is provided with a plurality of accommodating cavities 40; and
and damping particles 50 disposed in the accommodating cavity 40.
In specific implementation, the box body 10 contains elements such as an iron core winding of an electrical device, which may generate severe vibration during operation, and the vibration transmits vibration and noise to the box body 10 through a medium (oil, air, etc.) of the box body 10 to generate vibration and radiate severe noise. At this time, a plurality of rib plates 20 are arranged on the box body 10 at equal intervals, vibration isolators are adhered to the rib plates 20, accommodating cavities are formed in the vibration isolators, damping particles are filled in the accommodating cavities, and the accommodating cavities 40 on the sealing covers 30 at two ends of the box body 10 are filled with the damping particles 50, so that the vibration of the box body 10 excited by the medium due to the influence of electromagnetic force on iron core windings and other elements can be effectively inhibited; the accommodating cavity 40 is arranged near a modal point (a point with maximum vibration), and the modal point can be obtained by performing modal experiments on the box structure or by using a finite element simulation technology; it is prior art and is not repeated herein. The accommodating cavity 40 filled with the damping particles 50 is arranged near the modal point, so that the damping particles 50 in the accommodating cavity 40 can move more violently, the more energy generated by inelastic collision and friction of the damping particles is, the more obvious energy consumption effect is, and the better vibration damping effect is achieved by the box structure. Of course, the receiving cavities may be periodically or irregularly disposed on the rib plate 20 and the cover 30, which may also achieve the damping effect. The inelastic collision and friction between the damping particles 50 and the walls of the receiving cavity 40 dissipate the vibration energy generated by the core winding and other elements, thereby reducing the noise radiated from the transformer due to the vibration of the core winding and other elements passing through the medium. The box body has good vibration damping effect; the damping particles 50 are only required to be filled in the accommodating cavities 40 on the rib plates 20 and the sealing cover 30, so that raw materials are reduced, and the manufacturing cost is saved; the structure is simple, and the vibration damping effect is good. In this embodiment, the vibration energy generated by components such as the core winding in the box can be effectively absorbed by reasonably arranging the position, structure, number and shape of the cavities, size, material, filling rate and other parameters of the rib plates 20, and the radiated vibration noise can be reduced.
According to the utility model, the plurality of rib plates 20 arranged on the box body 10 at equal intervals and the seal covers 30 arranged at two ends of the box body 10 are respectively provided with the containing cavities 40, the containing cavities 40 are filled with the damping particles 50, and the vibration energy generated in the axial direction of the winding is consumed through inelastic collision and friction between the damping particles 50 and the walls of the containing cavities 40, so that the vibration of elements such as an iron core and the winding in the transformer is inhibited, the noise radiated by the vibration is reduced, and the vibration reduction effect is good.
Further, the box body 10 has a polygonal prism structure. In this embodiment, the box body 10 is preferably a hexagonal prism structure.
Further, the filling material of the damping particles 50 in the accommodating cavity 40 is 10% -100%; the diameter of the damping particles 50 in the accommodating cavity 40 is 0.1-10 mm.
In this embodiment, the surface of the damping particle 50 is configured as: the surface friction factor is 0.01 to 0.99, the surface recovery coefficient is 0.01 to 1, and the density is 0.1 to 30g/cm3(ii) a The filling rate of the damping particles 50 in the accommodating cavity 40 is 10-100%; preferably, the filling rate of the damping particles 50 is 60% -90%; more preferably, the damping effect is best when the filling rate of the damping particles 50 is 85% to 95%, the noise radiated from the iron core winding and other elements is reduced by ensuring a certain moving space of the damping particles 50, and at this time, the energy of vibration is consumed by inelastic collision and friction between the damping particles 50 and between the damping particles 50 and the wall of the accommodating cavity 40, so that the noise radiated from the winding due to the vibration is reduced, and the damping effect is further improved. The diameter of the damping particles 50 in the accommodating cavity 40 is 0.1-10 mm, and when the diameter of the damping particles 50 is a spherical structure of 4-6 mm, the damping particles are optimal, have a larger freedom of movement and a high collision probability, so that the damping effect is increased, and the vibration reduction effect is further improved. The damping particles 50 may also be in the shape of a cube or other polyhedral structure.
Further, the damping particles 50 may be made of one or more of iron-based particles, aluminum-based particles, nickel-based particles, tungsten-based particles, chromium-based particles, sodium-based particles, magnesium-based particles, manganese-based particles, calcium-based particles, copper-based particles, zinc-based particles, scandium-based particles, titanium-based particles, glass particles, oxide ceramic particles, carbide ceramic particles, and glass ceramic particles.
Example two
As shown in fig. 2, the present embodiment is different from the first embodiment in that: the box structure further comprises a plurality of groups of shock absorbers 60 sleeved on the box body 10, wherein cavities are arranged in the shock absorbers 60, and the cavities are filled with the damping particles 50; the plural sets of the dampers 60 are alternately arranged with the plural ribs 20.
In this embodiment, a plurality of sets of vibration dampers 60 are added to the box body 10 to further improve the vibration damping effect; when the rib plate 20 does not meet the requirement of filling particles, the vibration damper 60 can be installed through the design, and then a cavity is manufactured for the box body 10. Preferably, the vibration damper 60 is mounted to a modal point of the box body 10 (such as a rib 20, a thin wall, etc.), so as to effectively absorb vibration and noise radiated from the box body 10. The position of the larger vibration position can determine a modal sensitive point by carrying out finite element modal analysis on the box structure; finally, determining the installation position of the shock absorber 60 according to actual conditions; it is prior art and is not repeated herein. The multiple sets of the vibration absorbers 60 and the multiple ribs 20 are alternately arranged, so that the distribution area of damping particles is increased, and the vibration reduction effect is further improved. The shock absorber 60 is installed near the modal point, so that the damping particles 50 in the cavity can move more violently, the more energy is generated by inelastic collision and friction, the more obvious energy consumption effect is, and the better noise reduction effect is achieved.
EXAMPLE III
As shown in fig. 3, the low noise box structure of the power equipment further includes a protective cover 70 disposed outside the box body 10, and a mounting seat 80 is disposed at the bottom of the protective cover 70.
Further, a vibration damping assembly 71 is arranged on the protective cover 70, and the vibration damping assembly 71 includes a vibration damper body arranged on the protective cover 70, an accommodating cavity arranged on the vibration damper body, and damping particles arranged in the accommodating cavity.
Further, the protection cover 70 is provided with a filter hole 72.
Further, a heat sink is disposed inside the protection cover 70.
In this embodiment, a protective cover 70 is disposed outside the box body 10, which can prevent foreign matters from entering the box body to affect the use of the transformer, increase the reflection of noise, and improve the noise reduction effect; the mounting seat 80 at the bottom of the protective cover 70 is composed of two channel steels, and plays a supporting role for the protective cover 70. Every face of protection casing 70 all pastes damping subassembly 71, the energy of vibration is consumed through the inelasticity collision and the friction between the damping particle, between damping particle and the holding cavity wall to damping subassembly 71 is inside, further improves the damping effect, and then reaches better noise reduction effect. The protective cover 70 is provided with the filter holes 72, and the radiator is arranged on the inner side of the protective cover 70, so that a better radiating effect is achieved. Preferably, the ratio of the physical area of the shield 70 to the area occupied by the filter holes 72 is 1: 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electrical equipment low noise box structure which characterized in that includes:
the box body (10), the box body (10) is used for accommodating corresponding power equipment;
the box body is characterized by comprising a plurality of rib plates (20) arranged on the box body (10), wherein the rib plates (20) are arranged on the outer surface of the box body (10), and a plurality of accommodating cavities (40) are formed in the rib plates;
the sealing covers (30) are arranged at two ends of the box body (10), and a plurality of accommodating cavities (40) are arranged in the sealing covers (30); and
damping particles (50) disposed within the receiving cavity (40).
2. The low noise box structure for electric power equipment according to claim 1, further comprising a protective cover (70) disposed outside said box body (10), wherein a mounting seat (80) is provided at the bottom of said protective cover (70).
3. The low-noise box structure for the electric power equipment according to claim 2, wherein a vibration damping assembly (71) is arranged on the protective cover (70), and the vibration damping assembly (71) comprises a vibration damper body arranged on the protective cover (70), a containing cavity arranged on the vibration damper body, and damping particles arranged in the containing cavity.
4. The low noise box structure of electric power equipment according to claim 2, wherein the protection cover (70) is provided with a filter hole (72).
5. The low-noise box structure for the power equipment as claimed in claim 1, further comprising a plurality of sets of vibration absorbers (60) sleeved on the box body (10), wherein cavities are formed in the vibration absorbers (60), and damping particles (50) are filled in the cavities.
6. The low noise box structure of electric power equipment according to claim 5, wherein a plurality of sets of said vibration dampers (60) are alternately arranged with a plurality of said ribs (20).
7. The low noise box structure of electric power equipment according to claim 1, characterized in that said box body (10) is a polygonal prism structure.
8. The low-noise box structure of power equipment as claimed in claim 1, wherein the filling material of the damping particles (50) in the accommodating cavity (40) is 10% -100%; the diameter of the damping particles (50) in the accommodating cavity (40) is 0.1-10 mm.
9. The power equipment low noise box structure of claim 1, wherein the damping particles (50) are made of one or more of iron-based particles, aluminum-based particles, nickel-based particles, tungsten-based particles, chromium-based particles, sodium-based particles, magnesium-based particles, manganese-based particles, calcium-based particles, copper-based particles, zinc-based particles, scandium-based particles, titanium-based particles, glass particles, oxide ceramic particles, carbide ceramic particles, and glass ceramic particles.
10. The low noise cabinet structure for electric power equipment according to claim 2, wherein a heat sink is provided inside said protection cover (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122828670.0U CN216519373U (en) | 2021-11-18 | 2021-11-18 | Low-noise box body structure of power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122828670.0U CN216519373U (en) | 2021-11-18 | 2021-11-18 | Low-noise box body structure of power equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216519373U true CN216519373U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122828670.0U Active CN216519373U (en) | 2021-11-18 | 2021-11-18 | Low-noise box body structure of power equipment |
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| CN (1) | CN216519373U (en) |
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2021
- 2021-11-18 CN CN202122828670.0U patent/CN216519373U/en active Active
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