CN110875116A - Transformer body prestressing force vibration damper and transformer - Google Patents
Transformer body prestressing force vibration damper and transformer Download PDFInfo
- Publication number
- CN110875116A CN110875116A CN201810991620.4A CN201810991620A CN110875116A CN 110875116 A CN110875116 A CN 110875116A CN 201810991620 A CN201810991620 A CN 201810991620A CN 110875116 A CN110875116 A CN 110875116A
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- Prior art keywords
- transformer
- reinforcing ribs
- shell
- stressed
- damping device
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- Pending
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 51
- 210000002435 tendon Anatomy 0.000 claims abstract description 31
- 238000013016 damping Methods 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- H01F27/02—Casings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a prestress vibration damper of a transformer body and a transformer, wherein the transformer comprises a shell and a transformer electric body arranged in the shell; the outer wall of the shell is provided with reinforcing ribs with the number larger than 1 in parallel; the vibration reduction device comprises vibration reduction units with the number larger than 1, and the vibration reduction units are respectively arranged on the surfaces of the reinforcing ribs, the interiors of the reinforcing ribs and/or the outer wall of the shell between the reinforcing ribs; the vibration reduction unit comprises a prestressed tendon, a fixing piece and a supporting piece, wherein the fixing piece is connected with two ends of the prestressed tendon and is used for fixing the position of the prestressed tendon, and the supporting piece is connected with the middle of the prestressed tendon and is used for supporting the shape of the prestressed tendon. The reinforcing ribs with higher rigidity and mass are arranged on the outer wall of the transformer shell, so that the vibration of the shell wall between the reinforcing ribs is limited, and the generation of noise is reduced; meanwhile, the vibration reduction units are arranged on the reinforcing ribs on the outer wall of the transformer shell, in the reinforcing ribs or between the reinforcing ribs, so that the vibration generated in the transformer is further absorbed and consumed.
Description
Technical Field
The invention relates to the technical field of vibration reduction of transformers, in particular to a prestress vibration reduction device of a transformer body and a transformer.
Background
With the rapid development of city construction and the continuous rise of social electricity consumption, a plurality of transformer substations gradually go deep into densely populated areas, more and more transformer substations are arranged in urban areas, and the problems of transformer substation vibration and noise gradually become the focus of social attention.
The large-scale oil-immersed transformer is a main noise source of a transformer substation, and the oil-immersed transformer mainly comprises an iron core, a clamping piece, a winding, an oil body, a box body and various external accessory components. The noise of the transformer is mainly caused by magnetostriction of the iron core and winding electrodynamic force, and is transmitted to the box body through coupling of the transformer oil body, so that radiation noise of the external box body is generated. At present, as the quantity of the transformer becomes larger and the application range is expanded, noise is generated more and more, and measures for controlling the noise are not satisfactory.
There is therefore a need for a transformer body prestressed vibration damping device that meets the deficiencies of the prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the applicant designs a prestress vibration damper for a transformer body; the reinforcing ribs with higher rigidity and mass are arranged on the outer wall of the transformer shell, so that the vibration of the shell wall between the reinforcing ribs is limited, and the generation of noise is reduced; meanwhile, the vibration reduction units are arranged on the reinforcing ribs on the outer wall of the transformer shell, in the reinforcing ribs or between the reinforcing ribs, so that the vibration generated in the transformer is further absorbed and consumed, and the generation of noise is greatly inhibited; and the device has safe materials and structure, can be used for a long time, does not influence the internal structure and is free from maintenance.
The purpose of the invention is realized by the following technical scheme:
the invention provides a prestressed vibration damping device of a transformer body, wherein the transformer comprises a shell and a transformer electric body arranged in the shell;
the outer wall of the shell is provided with reinforcing ribs with the number larger than 1 in parallel;
the vibration reduction device comprises vibration reduction units with the number larger than 1, and the vibration reduction units are respectively arranged on the surfaces of the reinforcing ribs, the interiors of the reinforcing ribs and/or on the outer wall of the shell between the reinforcing ribs;
the damping unit includes prestressing tendons, with the mounting that prestressing tendons both ends are connected and are used for fixed its position and with the support piece that prestressing tendons middle part is connected and is used for supporting its form.
Preferably, the reinforcing rib is cuboid and comprises a side piece and a bottom, wherein the side piece is vertically connected with the outer wall of the shell, and the bottom is vertically connected with the free end of the side piece.
Preferably, the longitudinal side wall of the reinforcing rib is provided with a through hole for the prestressed reinforcing rib to pass through.
Preferably, the reinforcing ribs are arranged vertically or horizontally.
Preferably, the number of the supporting members is an odd number of 1 or more.
Preferably, the line of the contact between the support member and the prestressed tendon is a straight line, an arc or a parabola.
Preferably, the height of the support member is equal to or less than the thickness of the reinforcing rib.
Preferably, the fixing piece is fixedly connected with the outer wall of the shell; the fixing piece is connected with the prestressed tendons through a prestressed adjusting assembly.
Preferably, the fixing piece is provided with two parallel connecting lugs; the prestress adjusting assembly comprises a twisting shaft, two ends of the twisting shaft penetrate through the connecting lugs respectively, one end of the twisting shaft is connected with a handle used for driving the twisting shaft to rotate, and the other end of the rotating shaft is connected with a locking mechanism used for limiting the rotating shaft to rotate; the rotating shaft is provided with a wire fixing head which is vertical to the axial direction of the rotating shaft, and the prestressed tendons are connected with the wire fixing head.
Preferably, the diameter of the prestressed tendon is less than or equal to 10 mm; the tensile strength of the prestressed tendon is more than or equal to 1470 MPa.
Based on the unified invention concept, the invention also provides a transformer, which comprises the transformer body prestress vibration damper.
Compared with the closest prior art, the invention has the beneficial effects that:
1. according to the technical scheme provided by the invention, the reinforcing ribs with higher rigidity and mass are arranged on the outer wall of the transformer shell, so that the vibration of the shell wall between the reinforcing ribs is limited, and the generation of noise is reduced; meanwhile, the vibration reduction units are arranged on the reinforcing ribs on the outer wall of the transformer shell, in the reinforcing ribs or between the reinforcing ribs, so that the vibration generated in the transformer is further absorbed and consumed, and the generation of noise is greatly inhibited; and the device has safe materials and structure, can be used for a long time, does not influence the internal structure and is free from maintenance.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1: the invention provides a schematic diagram of a vibration damper installed on a transformer;
reference numerals: 1-reinforcing rib, 2-prestressed rib, 3-fixing piece, 4-supporting piece and 5-shell.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application.
Example 1
As shown in fig. 1, the invention provides a prestressed vibration damping device for a transformer body, wherein the transformer comprises a shell 5 and a transformer electric body arranged in the shell 5;
the outer wall of the shell 5 is provided with reinforcing ribs 1 in parallel, and the number of the reinforcing ribs is more than 1;
the vibration reduction device comprises vibration reduction units with the number larger than 1, and the vibration reduction units are respectively arranged on the surface of the reinforcing rib 1, the inner part of the reinforcing rib 1 and/or the outer wall of the shell between the reinforcing ribs 1;
the damping unit comprises a prestressed tendon 2, a fixing piece 3 which is connected with two ends of the prestressed tendon 2 and is used for fixing the position of the prestressed tendon, and a supporting piece 4 which is connected with the middle part of the prestressed tendon 2 and is used for supporting the shape of the prestressed tendon.
The reinforcing rib 1 is cuboid and comprises a side piece and a bottom, wherein the side piece is vertically connected with the outer wall of the shell 5, and the bottom is vertically connected with the free end of the side piece.
And the longitudinal side wall of the reinforcing rib 1 is provided with a through hole for the prestressed reinforcing rib 2 to pass through.
The reinforcing ribs 1 are vertically or horizontally arranged.
The number of the supporting members 4 is an odd number of 1 or more.
The contact line of the support piece 4 and the prestressed tendon 2 is in a straight line, an arc or a parabola shape.
The height of the support part 4 is less than or equal to the thickness of the reinforcing rib 1.
The fixing piece 3 is fixedly connected with the outer wall of the shell 5; the fixing piece 3 is connected with the prestressed tendon 2 through a prestressed adjusting component.
The fixing piece 3 is provided with two parallel connecting lugs; the prestress adjusting assembly comprises a twisting shaft, two ends of the twisting shaft penetrate through the connecting lugs respectively, one end of the twisting shaft is connected with a handle used for driving the twisting shaft to rotate, and the other end of the twisting shaft is connected with a locking mechanism used for limiting the rotation of the rotating shaft; the wire twisting shaft is provided with a wire fixing head which is vertical to the axial direction of the wire twisting shaft, and the prestressed tendon 2 is connected with the wire fixing head.
The diameter of the prestressed tendon 2 is less than or equal to 10 mm; the tensile strength of the prestressed tendon 2 is more than or equal to 1470 MPa.
In the embodiment, the prestressed tendon 2 adopts a 1 x 2 structural steel strand, the diameter is 10mm, the length is 3000mm, and the prestress value is 17 KN; the supporting piece 4 is a 150mm high steel column, the length of the reinforcing rib is 2800mm, the width of the reinforcing rib is 400mm, the number of the transformer reinforcing ribs 1 on the low-voltage side is 9, and 1 damping unit is arranged on each reinforcing rib 1.
The vibration damping device in the present embodiment is directed to noise frequencies of 100Hz, 200Hz, 300Hz, and 400 Hz.
Example 2
Based on the unified inventive concept, the invention also provides a transformer, which comprises the transformer body prestress vibration damper in the embodiment 1.
Finally, it should be noted that: the embodiments described are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present application belong to the protection scope of the present application.
Claims (11)
1. A pre-stress vibration damper for a transformer body comprises a shell and a transformer electric body arranged in the shell; it is characterized in that the preparation method is characterized in that,
the outer wall of the shell is provided with reinforcing ribs with the number larger than 1 in parallel;
the vibration reduction device comprises vibration reduction units with the number larger than 1, and the vibration reduction units are respectively arranged on the surfaces of the reinforcing ribs, the interiors of the reinforcing ribs and/or on the outer wall of the shell between the reinforcing ribs;
the damping unit includes prestressing tendons, with the mounting that prestressing tendons both ends are connected and are used for fixed its position and with the support piece that prestressing tendons middle part is connected and is used for supporting its form.
2. The pre-stressed vibration damping device for transformer bodies according to claim 1, wherein the reinforcing ribs are rectangular and comprise side pieces vertically connected with the outer wall of the housing and bottoms respectively vertically connected with the free ends of the side pieces.
3. The pre-stressed vibration damping device for transformer body as claimed in claim 2, wherein the longitudinal side walls of said reinforcing ribs are provided with through holes for said pre-stressed ribs to pass through.
4. The pre-stressed vibration damping device for transformer bodies according to claim 1, wherein the reinforcing ribs are arranged vertically or horizontally.
5. The transformer body pre-stressed vibration damping device according to claim 1, wherein the number of said supporting members is an odd number greater than or equal to 1.
6. The pre-stressed vibration damping device for transformer bodies according to claim 1, wherein the line of contact between the supporting member and the pre-stressed tendon is a straight line, an arc or a parabola.
7. The pre-stressed vibration damping device for transformer body as claimed in claim 1, wherein the height of said supporting member is less than or equal to the thickness of said reinforcing rib.
8. The transformer body pre-stressed vibration damping device of claim 1, wherein said fixing member is fixedly connected to an outer wall of said housing; the fixing piece is connected with the prestressed tendons through a prestressed adjusting assembly.
9. The transformer body pre-stressed vibration damping device of claim 8, wherein said fixing member is provided with two parallel engaging lugs; the prestress adjusting assembly comprises a twisting shaft, two ends of the twisting shaft penetrate through the connecting lugs respectively, one end of the twisting shaft is connected with a handle used for driving the twisting shaft to rotate, and the other end of the rotating shaft is connected with a locking mechanism used for limiting the rotating shaft to rotate; the rotating shaft is provided with a wire fixing head which is vertical to the axial direction of the rotating shaft, and the prestressed tendons are connected with the wire fixing head.
10. The transformer body prestressed vibration damping device of claim 6, wherein said prestressed reinforcing bars have a diameter of 10mm or less; the tensile strength of the prestressed tendon is more than or equal to 1470 MPa.
11. A transformer, characterized in that it comprises a transformer body pre-stressed damping device according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991620.4A CN110875116A (en) | 2018-08-29 | 2018-08-29 | Transformer body prestressing force vibration damper and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810991620.4A CN110875116A (en) | 2018-08-29 | 2018-08-29 | Transformer body prestressing force vibration damper and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110875116A true CN110875116A (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810991620.4A Pending CN110875116A (en) | 2018-08-29 | 2018-08-29 | Transformer body prestressing force vibration damper and transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110875116A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858112A (en) * | 2010-06-04 | 2010-10-13 | 北京工业大学 | Prestressed damping part capable of improving building structural element damp |
| CN201820587U (en) * | 2010-08-11 | 2011-05-04 | 上海南桥变压器有限责任公司 | Reinforcing rib structure of transformer oil tank |
| CN103031897A (en) * | 2011-10-10 | 2013-04-10 | 湖南华廷筑邦建材有限公司 | Fabrication method of heat insulating component |
| CN203850096U (en) * | 2014-04-21 | 2014-09-24 | 上海南桥变压器有限责任公司 | Tank shell for large transformer |
| CN107967981A (en) * | 2017-11-08 | 2018-04-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of reinforcement means and high-power transformer for lifting high-power transformer anti-seismic performance |
-
2018
- 2018-08-29 CN CN201810991620.4A patent/CN110875116A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858112A (en) * | 2010-06-04 | 2010-10-13 | 北京工业大学 | Prestressed damping part capable of improving building structural element damp |
| CN201820587U (en) * | 2010-08-11 | 2011-05-04 | 上海南桥变压器有限责任公司 | Reinforcing rib structure of transformer oil tank |
| CN103031897A (en) * | 2011-10-10 | 2013-04-10 | 湖南华廷筑邦建材有限公司 | Fabrication method of heat insulating component |
| CN203850096U (en) * | 2014-04-21 | 2014-09-24 | 上海南桥变压器有限责任公司 | Tank shell for large transformer |
| CN107967981A (en) * | 2017-11-08 | 2018-04-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of reinforcement means and high-power transformer for lifting high-power transformer anti-seismic performance |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200310 |