CN111180182A - Noise reduction device for oil-immersed power equipment - Google Patents
Noise reduction device for oil-immersed power equipment Download PDFInfo
- Publication number
- CN111180182A CN111180182A CN201811329479.8A CN201811329479A CN111180182A CN 111180182 A CN111180182 A CN 111180182A CN 201811329479 A CN201811329479 A CN 201811329479A CN 111180182 A CN111180182 A CN 111180182A
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- Prior art keywords
- hollow
- noise reduction
- oil tank
- wall
- honeycomb
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Abstract
The invention provides a noise reduction device for oil-immersed power equipment, which comprises: a plurality of hollow tubes connected to each other; the hollow pipes are in a honeycomb calandria structure, are arranged on the inner wall of an oil tank of the power equipment, and are completely immersed in oil supplied by a cavity formed by the hollow pipes and the inner wall of the oil tank; the honeycomb comb-shaped pipe-arranging structure is used for reflecting sound waves generated by the electric power equipment in the honeycomb comb-shaped pipe-arranging structure for multiple times, so that the noise value of the sound waves is reduced; the noise reduction device is used for reflecting sound waves generated by the power equipment in the honeycomb structure for multiple times to reduce the noise value of the sound waves, and certain mutual offset is generated among partial sound waves, so that the noise energy transmitted to the outside of the oil tank is effectively reduced, and the noise reduction effect is realized on the whole.
Description
Technical Field
The invention relates to a noise reduction device of an environment-friendly technology of power transmission and transformation engineering, in particular to a noise reduction device for oil-immersed power equipment.
Background
With the rapid increase of the electric load, the capacity and the construction scale of the transformer substation are larger and larger, in recent years, part of the transformer substations are deep into noise sensitive areas such as residential areas, schools, hospitals and the like, and vibration and noise generated when oil-immersed power equipment (such as transformers and reactors) work have certain influence on the life of surrounding residents. The cost performance of the existing multiple noise reduction measures is not high, or normal operation and maintenance of equipment are influenced, and large-area popularization is difficult.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a noise reduction device for oil-immersed power equipment.
The technical scheme provided by the invention is as follows: a noise reduction apparatus for an oil filled power device, comprising: a plurality of hollow tubes (3) connected to each other;
the hollow pipes (3) are in a honeycomb calandria structure, are arranged on the inner wall (2) of the oil tank of the power equipment, and are completely immersed in oil supply liquid in a cavity formed by the hollow pipes and the inner wall (2) of the oil tank; the honeycomb comb-shaped pipe-arranging structure is used for reflecting sound waves generated by the electric equipment in the honeycomb comb-shaped pipe-arranging structure for multiple times, and the noise value of the sound waves is reduced.
Preferably, the cross section of each hollow tube (3) is a regular hexagon.
Preferably, the plurality of hollow pipes connected with each other are arranged in a plurality of layers of hollow calandria, the connection positions among the layers are in rigid connection through side surfaces or edges, and the section of the formed cavity is in a regular triangle or quadrangle;
each layer of hollow calandria is formed by rigidly connecting a plurality of hollow pipes (3) which are arranged in a straight line;
the side surfaces or edges of the adjacent hollow pipes (3) are rigidly connected.
Preferably, the inner wall (2) of the oil tank is rigidly connected with the side surface or the edge of the hollow pipe (3);
the section of a cavity formed by the hollow calandria and the inner wall (2) of the oil tank is triangular.
Preferably, the laying area of the honeycomb calandria structure accounts for 80% of the area of the inner wall of the oil tank;
the thickness of the honeycomb row tubular structure is less than 1/10 of the size of the oil tank.
Preferably, the ratio of the thickness of the side wall of the hollow pipe (3) to the radius of the circumscribed circle of the hollow pipe (3) is not more than 1: 4.
Preferably, the material of the hollow tube (3) comprises: any one or more of metal, alloy, insulating paper and ceramic, and any combination or stacking of the materials.
Preferably, the connection form of the hollow pipe (3) and the oil tank inner wall (2) and the hollow pipe (3) respectively comprises: any one or a plurality of arbitrary combination of sticking, welding, screw and rivet.
Preferably, the multilayer hollow calandria is at least 1 layer of hollow calandria.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the invention provides a noise reduction device for oil-immersed power equipment, which comprises: a plurality of hollow tubes connected to each other; the hollow pipes are in a honeycomb calandria structure, are arranged on the inner wall of an oil tank of the power equipment, and are completely immersed in oil supplied by a cavity formed by the hollow pipes and the inner wall of the oil tank; the honeycomb comb-shaped pipe-arranging structure is used for reflecting sound waves generated by the electric power equipment in the honeycomb comb-shaped pipe-arranging structure for multiple times, so that the noise value of the sound waves is reduced; the noise reduction device is used for reflecting sound waves generated by the power equipment in the honeycomb structure for multiple times to reduce the noise value of the sound waves, and certain mutual offset is generated among partial sound waves, so that the noise energy transmitted to the outside of the oil tank is effectively reduced, and the noise reduction effect is realized on the whole.
(2) The noise reduction device provided by the invention can be assembled and installed according to the internal conditions of electrical equipment, has a simple structure and safe materials, is maintenance-free, and is suitable for noise reduction application of oil-immersed electrical equipment in power transmission and transformation engineering.
(3) The noise reduction device provided by the invention can be customized for noise with specific frequency by optimizing the wall thickness, radius and material of the honeycomb structure, and has strong pertinence.
(4) The noise reduction device provided by the invention occupies small internal space of the oil tank, has low implementation cost, can be produced and installed in a modularized manner, has a simple structure and safe materials, can be used for a long time, is free from maintenance, and is easy to realize engineering application.
(5) The noise reduction device provided by the invention has the laying area accounting for about 80% of the area of the inner wall of the oil tank.
(6) The noise reduction scheme provided by the invention reduces audible noise outside the oil tank by 5% -10%.
Drawings
FIG. 1 is a schematic structural diagram of a noise reduction device according to the present invention;
FIG. 2 is a schematic view of another connection form of the noise reducing device of the present invention;
wherein, 1-noise reduction device; 2-an oil tank; 3-hollow pipe.
Detailed Description
For a better understanding of the present invention, the technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the present invention provides a noise reduction device for an oil-filled power device, including: a plurality of hollow tubes 3 connected to each other;
the hollow pipes 3 are in a honeycomb row tubular structure, are arranged on the inner wall 2 of the oil tank of the power equipment, and are completely immersed in oil supply liquid in a cavity formed by the hollow pipes and the inner wall 2 of the oil tank; the honeycomb comb-shaped pipe-arranging structure is used for reflecting sound waves generated by the electric equipment in the honeycomb comb-shaped pipe-arranging structure for multiple times, and the noise value of the sound waves is reduced.
Preferably, the cross section of each hollow tube 3 is a regular hexagon.
Preferably, the plurality of hollow pipes connected with each other are arranged in a plurality of layers of hollow calandria, the connection positions among the layers are in rigid connection through side surfaces or edges, and the section of the formed cavity is in a regular triangle or quadrangle;
each layer of hollow calandria is formed by rigidly connecting a plurality of hollow pipes 3 which are arranged in a straight line;
the side surfaces or edges of the adjacent hollow pipes 3 are rigidly connected.
Preferably, the inner wall 2 of the oil tank is rigidly connected with the side surface or the edge of the hollow pipe 3;
the section of a cavity formed by the hollow calandria and the inner wall 2 of the oil tank is triangular.
Preferably, the laying area of the honeycomb calandria structure accounts for 80% of the area of the inner wall of the oil tank;
the thickness of the honeycomb row tubular structure is less than 1/10 of the size of the oil tank.
Preferably, the ratio of the thickness of the side wall of the hollow tube 3 to the radius of the circumscribed circle of the hollow tube 3 is not more than 1: 4.
Preferably, the material of the hollow tube 3 includes: any one or more of metal, alloy, insulating paper and ceramic, and any combination or stacking of the materials.
Preferably, the connection form of the hollow tube 3 and the inner wall 2 of the oil tank and the hollow tube 3 respectively comprises: any one or a plurality of arbitrary combination of sticking, welding, screw and rivet.
Preferably, the multilayer hollow calandria is at least 1 layer of hollow calandria.
Specifically, the noise reduction device provided by the invention is an oil-immersed honeycomb noise reduction device, is mainly used for reducing the medium-low frequency noise, and comprises a calandria structure of a plurality of regular hexagonal hollow pipes and a fixed structure of the calandria structure;
the regular hexagonal hollow pipe is a single pipe unit, and the section of the regular hexagonal hollow pipe is a regular hexagon;
the calandria-shaped structure is formed by combining a plurality of hollow pipes in a fixed connection mode, is tightly fixed on the inner wall of the oil tank of the oil-immersed power equipment through the fixing structure, and enables oil liquid to be completely immersed into a cavity formed between the hollow pipes and the inner wall of the oil tank;
the fixed structure needs to meet the rigid connection between the hollow calandria and the inner wall of the oil tank; the form of the fixed structure can be any one of sticking, welding, screws, rivets and the like, or the fixed structure can be formed by combining the forms at will; the fixed structure needs to meet the requirement that a large enough cavity space is formed between the inner wall surface of the oil tank and the outer wall surface of the hollow pipe, so that oil can be fully immersed in the cavity space.
The material of the regular hexagonal hollow tube can be any one of materials such as metal, alloy, insulating paper, ceramic and the like, or a composite material formed by randomly combining and stacking the materials, or a double-layer or multi-layer material formed by randomly combining the materials;
the ratio of the thickness of the tube wall of the regular hexagonal hollow tube to the radius of the circumscribed circle of the regular hexagonal hollow tube is not more than 1: 4;
the hollow pipe connection form comprises two forms of wall connection and edge connection, and the wall connection is side wall connection; the wall surface connection is in a form that one outer wall surface of the regular hexagonal hollow pipe is connected with one outer wall surface of the other regular hexagonal hollow pipe; the edge connection is a mode that a certain edge of the regular hexagonal hollow pipe is connected with a certain edge of another regular hexagonal hollow pipe.
The oil-immersed honeycomb noise reduction device is a single-layer or multi-layer device with a honeycomb structure on the section, which is formed by connecting a plurality of regular hexagonal hollow pipes, but the total thickness of the device is not more than 1/10 of the size of an oil tank.
The multilayer oil-immersed honeycomb calandria structure can adopt wall connection or edge connection between layers or can be connected by selecting one of different layers.
The oil immersed honeycomb noise reduction device is not limited in arrangement direction, and is preferably arranged on the inner wall surface of the oil tank in a rectangular mode so as to achieve the best effect.
As shown in fig. 1, the hollow pipes of the noise reduction device provided by this embodiment are arranged in three layers, and the connection modes between the inner wall surface of the oil tank and each layer are edge connection, wall surface connection and wall surface connection respectively;
the calandria material is aluminum, the thickness of the pipe wall is 3mm, and the radius of the circumscribed circle of the regular hexagonal pipe is 20 mm;
the inner wall surface of the oil tank and each layer are fixed by welding;
the laying area of the honeycomb calandria noise reduction device accounts for about 80% of the area of the inner wall of the oil tank;
with this arrangement, the audible noise outside the fuel tank is reduced by about 5% -10%.
As shown in fig. 2, in the honeycomb noise reduction device provided by this embodiment, a regular hexagonal hollow tube is used as a tube unit, and a single-layer combination is connected through wall connection or edge connection, or a combination of multiple layers can be realized through the two connection modes;
a in fig. 2 is a three-layer structure, and the connection modes of the inner wall surface of the oil tank and each layer are wall surface connection, edge connection and edge connection respectively;
b in FIG. 2 is a two-layer structure, and the inner wall surface of the oil tank is connected with each layer in a seamed edge manner;
in fig. 2, c is a two-layer structure, and the connection between the inner wall surface of the fuel tank and each layer is wall surface connection.
In practical application, the number of layers of the honeycomb calandria is not fixed, but the total thickness of the honeycomb calandria does not exceed 1/10 of the size of the oil tank, and the connection mode of the inner wall surface of the oil tank and the calandria and the connection mode of the calandria of each layer can be either wall connection or edge connection or any combination of the two modes.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (9)
1. A noise reduction device for an oil-filled power device, comprising: a plurality of hollow tubes (3) connected to each other;
the hollow pipes (3) are in a honeycomb calandria structure, are arranged on the inner wall (2) of the oil tank of the power equipment, and are completely immersed in oil supply liquid in a cavity formed by the hollow pipes and the inner wall (2) of the oil tank; the honeycomb comb-shaped pipe-arranging structure is used for reflecting sound waves generated by the electric equipment in the honeycomb comb-shaped pipe-arranging structure for multiple times, and the noise value of the sound waves is reduced.
2. The noise reduction apparatus of claim 1,
the section of each hollow pipe (3) is a regular hexagon.
3. The noise reducer according to claim 2, wherein the interconnected hollow tubes are arranged in a plurality of layers of hollow pipes, the connection between the layers is rigidly connected by sides or edges, and the cross section of the formed cavity is regular triangle or quadrangle;
each layer of hollow calandria is formed by rigidly connecting a plurality of hollow pipes (3) which are arranged in a straight line;
the side surfaces or edges of the adjacent hollow pipes (3) are rigidly connected.
4. The noise reduction apparatus of claim 2,
the inner wall (2) of the oil tank is rigidly connected with the side surface or the edge of the hollow pipe (3);
the section of a cavity formed by the hollow calandria and the inner wall (2) of the oil tank is triangular.
5. The noise reduction apparatus of claim 1,
the laying area of the honeycomb calandria structure accounts for 80% of the area of the inner wall of the oil tank;
the thickness of the honeycomb row tubular structure is less than 1/10 of the size of the oil tank.
6. The noise reduction apparatus of claim 2,
the ratio of the thickness of the side wall of the hollow pipe (3) to the radius of the circumscribed circle of the hollow pipe (3) is not more than 1: 4.
7. The noise reduction apparatus of claim 1,
the material of hollow tube (3) includes: any one or more of metal, alloy, insulating paper and ceramic, and any combination or stacking of the materials.
8. The noise reduction apparatus of claim 3,
the hollow tube (3) respectively with oil tank inner wall (2) with the connected form of hollow tube (3) includes: any one or a plurality of arbitrary combination of sticking, welding, screw and rivet.
9. The noise reduction apparatus of claim 3,
the multilayer hollow calandria is at least 1 layer of hollow calandria.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329479.8A CN111180182A (en) | 2018-11-09 | 2018-11-09 | Noise reduction device for oil-immersed power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329479.8A CN111180182A (en) | 2018-11-09 | 2018-11-09 | Noise reduction device for oil-immersed power equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111180182A true CN111180182A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811329479.8A Pending CN111180182A (en) | 2018-11-09 | 2018-11-09 | Noise reduction device for oil-immersed power equipment |
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| Country | Link |
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| CN (1) | CN111180182A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011087427A (en) * | 2009-10-16 | 2011-04-28 | Mitsubishi Electric Corp | Phase separation bus |
| CN106373759A (en) * | 2016-08-30 | 2017-02-01 | 国网河南省电力公司南阳供电公司 | Noise-reduction protective apparatus for power distribution transformer |
| CN106847253A (en) * | 2016-12-28 | 2017-06-13 | 贵州大学 | A kind of honeycomb cavity structure acoustic stimulation |
| CN107808740A (en) * | 2017-12-14 | 2018-03-16 | 徐州飞轮电器科技开发有限公司 | A kind of noise reduction oil-immersed power transformer |
-
2018
- 2018-11-09 CN CN201811329479.8A patent/CN111180182A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011087427A (en) * | 2009-10-16 | 2011-04-28 | Mitsubishi Electric Corp | Phase separation bus |
| CN106373759A (en) * | 2016-08-30 | 2017-02-01 | 国网河南省电力公司南阳供电公司 | Noise-reduction protective apparatus for power distribution transformer |
| CN106847253A (en) * | 2016-12-28 | 2017-06-13 | 贵州大学 | A kind of honeycomb cavity structure acoustic stimulation |
| CN107808740A (en) * | 2017-12-14 | 2018-03-16 | 徐州飞轮电器科技开发有限公司 | A kind of noise reduction oil-immersed power transformer |
Non-Patent Citations (1)
| Title |
|---|
| 王智等: "《音响工程设计》", 31 July 2013 * |
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Application publication date: 20200519 |
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| RJ01 | Rejection of invention patent application after publication |