CN108206089B - Spliced vibration-damping lead wooden frame applied to inside of oil-immersed transformer - Google Patents
Spliced vibration-damping lead wooden frame applied to inside of oil-immersed transformer Download PDFInfo
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- CN108206089B CN108206089B CN201611176773.0A CN201611176773A CN108206089B CN 108206089 B CN108206089 B CN 108206089B CN 201611176773 A CN201611176773 A CN 201611176773A CN 108206089 B CN108206089 B CN 108206089B
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- tenon
- mortise
- oil
- vibration
- transformer
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- 238000013016 damping Methods 0.000 title claims abstract description 22
- 238000007711 solidification Methods 0.000 claims abstract description 6
- 230000008023 solidification Effects 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims abstract description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims description 10
- 239000000565 sealant Substances 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004588 polyurethane sealant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 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
- H01F27/33—Arrangements for noise damping
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a spliced vibration-damping lead wooden frame applied to the interior of an oil-immersed transformer, which comprises cross beams fixed on an upper clamping plate and a lower clamping plate of the transformer and longitudinal beams used for fixing leads, wherein two ends of each longitudinal beam are respectively connected with the two cross beams through mortise and tenon structures. Tenon and mortise in the mortise structure set up certain clearance, it has elastic sealed glue to fill in the clearance after the solidification. Through the non-rigid connection of tenon fourth of twelve earthly branches structure, play the effect of buffering energy-absorbing to the vibration of transformer, on the basis that satisfies the lead wire support function, realize the effect of making an uproar that falls in the damping.
Description
Technical Field
The invention relates to the technical field of a lead frame of a transformer, in particular to a spliced vibration reduction lead frame applied to the interior of an oil-immersed transformer.
Background
With the continuous expansion of the scale of cities and towns in China, the construction of electric power engineering represented by extra-high voltage is rapidly promoted, and a transformer substation becomes a core hub of electric power transmission. In recent years, a plurality of transformer substations are close to environment sensitive areas such as residential living areas, schools, hospitals and the like, and the noise pollution of the transformer substations seriously influences the work and life of surrounding residents. The transformer is a main noise source of the transformer substation, and the noise control of the transformer substation is mainly focused on the noise control of the transformer at present. The root of the vibration and noise of the transformer is mainly the magnetostriction of iron core silicon steel sheets and the vibration of a coil winding caused by load current, the frequency range of the noise is mainly concentrated in medium and low frequency, and meanwhile, a small part of high-frequency section noise also exists. The traditional noise control measures are realized by controlling the sound propagation process outside the transformer.
The efficient and convenient noise reduction measure is developed, and the method has important social value and practical significance.
The transformer lead wooden frame is an important component in a transformer oil tank, plays a role in supporting and fixing a lead of a transformer coil, is arranged at a position very close to the transformer coil, and has obvious induction on the vibration of the coil and an iron core. The traditional transformer lead wire wooden frame mainly considers the supporting and fixing effects on the lead wire, and is mostly made of wood formed integrally, and the vibration damping performance is poor due to the fact that the wood is fixedly connected through bolts or iron nails.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a spliced vibration-reduction lead wooden frame applied to the interior of an oil-immersed transformer, so that the internal vibration of the transformer is reduced, and the noise is reduced.
The invention also provides a transformer using the lead frame.
In order to solve the technical problem, the spliced vibration-damping lead wooden frame applied to the inside of the oil-immersed transformer comprises cross beams fixed on an upper clamping plate and a lower clamping plate of the transformer and longitudinal beams used for fixing leads, wherein two ends of each longitudinal beam are respectively connected with the two cross beams, and the longitudinal beams are connected with the cross beams through tenon-and-mortise structures.
Furthermore, tenon and mortise in the mortise and tenon structure set up the clearance of settlement, it has elastic sealed glue to fill in the clearance after having the solidification.
Further, the sealant is a one-component polyurethane sealant.
Further, the mortise and tenon joint structure of the end part of the beam comprises: the first sliding groove, the first tenon and the first mortise are respectively positioned on two sides of the first sliding groove; the mortise and tenon structure of the longitudinal beam comprises: the second sliding groove, a second tenon and a second mortise are respectively positioned on two sides of the second sliding groove; the first tenon is matched with the second tenon, and the first sliding groove and the second sliding groove form a groove hole for embedding the wedge block.
Furthermore, the outside of mortise and tenon structure still is provided with vice mortise and tenon structure, vice mortise and tenon structure does crossbeam and longeron intermeshing.
Further, the wedge-shaped block is made of wood.
Further, the wedge block is made of rubber.
Furthermore, the cross beam and the longitudinal beam respectively comprise a plurality of parts, and the parts are connected through a mortise and tenon structure.
The invention also provides a transformer, and the spliced vibration-damping lead wire wooden frame applied to the interior of the oil-immersed transformer is used.
Has the advantages that:
the wooden frame is arranged on the outer side of the coil in the oil-immersed transformer, plays a role in buffering and absorbing energy for the vibration of the transformer through the non-rigid connection of the splicing part, and achieves the effects of vibration reduction and noise reduction on the basis of meeting the supporting function of the lead.
Drawings
FIG. 1 is a schematic structural diagram of a spliced vibration-damping lead frame installed inside a transformer according to the present invention;
FIG. 2 is a schematic structural diagram of a mortise and tenon joint structure in a third embodiment of the spliced vibration-damping lead frame of the invention;
FIG. 3 is a schematic structural view of a cross beam and a longitudinal beam of a spliced vibration-damping lead frame according to a third embodiment of the present invention after assembly;
FIG. 4 is a schematic structural diagram of a mortise and tenon joint structure in a fourth embodiment of the spliced vibration-damping lead frame according to the present invention;
fig. 5 is a schematic structural view of an auxiliary mortise and tenon joint in a fourth embodiment of the spliced vibration-damping lead frame.
In the figure, 1, a beam, 101, a beam sliding groove, 102, a beam mortise, 103, a beam tenon, 104, a beam auxiliary tenon, 2, a longitudinal beam, 201, a longitudinal beam sliding groove, 202, a longitudinal beam mortise, 203, a longitudinal beam tenon, 204, a longitudinal beam auxiliary mortise, 3, a wedge block, 11, a lead, 12, a splint, 13, an iron core, 14, a coil and 15 slide groove holes.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
The first embodiment is as follows:
as shown in fig. 1, the spliced vibration-damping lead frame applied to the inside of the oil-immersed transformer comprises a cross beam 1 fixed on an upper clamping plate 12 and a lower clamping plate 12 of the transformer and a longitudinal beam 2 used for fixing a lead, wherein two ends of the longitudinal beam 2 are respectively connected with the two cross beams 1, and the longitudinal beam 2 is connected with the cross beams 1 through a mortise and tenon structure.
The wooden frame formed by splicing the tenon-and-mortise structures plays a role in buffering and absorbing energy for the vibration of the transformer, and achieves the effects of vibration reduction and noise reduction on the basis of meeting the supporting function of the lead.
On the other hand, in the prior art, the lead 11 is clamped on the longitudinal beam 2, and the longitudinal beam 2 drives the lead 11 to swing along with the vibration of the transformer, so that a joint of the lead 11 bears a large force, thereby generating an arc risk and causing the fatigue resistance of an insulating layer of the lead 11 to be reduced. In the invention, the vibration resistance of the mortise and tenon structure slows down the vibration amount of the longitudinal beam 2, so that the lead 11 can be stably clamped, and the damage is avoided.
Example two:
the tenon-mortise structure is further improved on the basis of the first embodiment, a set gap exists between the tenon and the mortise in the tenon-mortise structure, and the gap is filled with a sealant which is elastic after being cured.
According to the specifications of the 180kVA transformer commonly used at present, the size of the gap is usually set to be 2-4 mm. The gap is too small, the sealant is difficult to fill completely, the gap is too large, and the strength of the wooden frame is difficult to meet the use requirement. The size of the gap can be set according to the specification of the wooden frame.
Fill in the clearance and have elastic sealed glue after the solidification, can strengthen the fastness of connecting, simultaneously, because possess elasticity after the solidification, when the vibration atress, the tenon is along with when the atress direction removes, right sealed glue extrusion after the solidification, the tenon receives reverse extrusion force, hinders the tenon and continues to remove, consequently, the vibration resistance can be better.
In an alternative embodiment of the invention, the sealant can be a one-component polyurethane sealant, which has the advantages of high adhesion, adhesion of more than 30KG per square centimeter, and good elasticity after the colloid is cured.
Example three:
as shown in fig. 2, based on the first embodiment, a further improvement is that the mortise and tenon joint structure at the end of the beam 1 includes: the beam sliding groove 101, the beam tenon 103 and the beam mortise 102 are respectively positioned on two sides of the beam sliding groove 101; longeron 2's mortise and tenon structure includes: the longitudinal beam sliding groove 201, the longitudinal beam tenon 203 and the longitudinal beam mortise 202 are respectively positioned on two sides of the longitudinal beam sliding groove 201; the cross beam tenon 103 is matched with the longitudinal beam tenon 202, the cross beam tenon 102 is matched with the longitudinal beam tenon 203, and as shown in fig. 3, the cross beam sliding groove 101 and the longitudinal beam sliding groove 201 form a sliding groove hole 15 for embedding the wedge block 3.
The cross-sectional shapes of the beam tenon 103 and the longitudinal beam tenon 203 are not limited to the circular shapes shown in fig. 2, and may also be other shapes, such as triangular shapes, rectangular shapes, elliptical shapes or other geometric shapes.
In this embodiment, crossbeam 1 and longeron 2 all are provided with tenon and mortise, form two tenon fourth of the twelve earthly branches structures after the assembly, combine more firmly.
The end structures of the cross beam 1 and the longitudinal beam 2 are the same, so that the production and the processing are convenient.
Preferably, the tenon and the mortise are provided with a certain gap, and the gap is filled with a sealant which is elastic after curing. The connection is more stable and the damping performance is better.
An optional implementation manner of this embodiment is that, the material of the wedge block 3 is wood, and after wedging, the wooden frame is more stable.
Another optional implementation manner of this embodiment is that, the material of the wedge block 3 is rubber, and the stability of the wooden frame is ensured and the vibration damping performance is improved.
Example four:
as shown in fig. 4, a further improvement is made on the basis of the third embodiment, and the outer sides of the two mortise and tenon structures are further provided with auxiliary mortise and tenon structures, wherein the auxiliary mortise and tenon structures are formed by mutually engaging the cross beam 1 and the longitudinal beam 2.
As shown in fig. 5, in the present embodiment, the cross-sectional shapes of the beam tenon 103 and the longitudinal beam tenon 203 are rectangular, and correspondingly, the beam mortise 102 and the longitudinal beam mortise 202 are rectangular groove structures.
The outside of the tenon fourth of twelve earthly branches structure that crossbeam tenon 103 and longeron mortise 202 cooperation formed is provided with vice tenon fourth of twelve earthly branches structure, and the outside of the tenon fourth of twelve earthly branches structure that longeron tenon 203 and crossbeam mortise 102 cooperation formed is provided with the vice tenon fourth of twelve earthly branches structure of looks isostructure, and the vice tenon fourth of twelve earthly branches structure of two places is the same, only uses one place to introduce.
The vice tenon fourth of twelve earthly branches structure includes: a plurality of cross beam auxiliary tenons 104 arranged at equal intervals and longitudinal beam auxiliary mortises 204 corresponding to the cross beam auxiliary tenons; the two are engaged with each other, and the degree of freedom of the beam 1 in the length extending direction thereof is limited. The degrees of freedom in the other two coordinate directions in the three-dimensional space are limited by the tenon-and-mortise structure formed by the cross beam tenon 103 and the longitudinal beam mortise 202 and the wedge block 3.
In the scheme, the plurality of cross beam auxiliary tenons 104 are meshed with the longitudinal beam auxiliary mortises 204, so that the stability of the wooden frame is effectively improved.
Example five:
in the above embodiment, the cross beam 1 and the longitudinal beam 2 respectively include a plurality of portions, and the portions are connected by a mortise and tenon structure.
Except that the crossbeam 1 is connected with the longeron 2 through tenon fourth of twelve earthly branches structure, solitary crossbeam 1 or longeron 2 still forms through the concatenation of tenon fourth of twelve earthly branches structure, for crossbeam 1 or longeron 2 of overall structure, has further strengthened the damping nature of wooden frame, reduces the inside vibration volume of transformer.
The lead frame is formed by splicing and assembling, has good insulating property, high temperature resistance, strong corrosion resistance and high mechanical strength, and has certain elasticity. The spliced part is in meshed contact with the protruding part through the grooves, and is reinforced through the wedge-shaped blocks, the mechanical strength requirement of the lead support is met, meanwhile, the non-rigid connection of the spliced part plays a role in buffering and absorbing energy for the vibration of the transformer coil, and therefore certain vibration reduction and noise reduction effects are achieved on the basis of meeting the supporting function of the lead. On the other hand, the danger of electric arc at the lead joint and the reduction of the fatigue resistance of the lead insulating layer are avoided. In addition, the wooden frame can be assembled according to the requirements of transformers with different volume specifications, and is simple, safe and reliable.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The utility model provides a be applied to inside concatenation type damping lead wire wooden frame of oil-immersed transformer, a serial communication port, including the crossbeam that is fixed in transformer punch holder, lower plate and be used for the longeron of fixed lead, the both ends of longeron are respectively through tenon fourth of the twelve earthly branches structure and two the crossbeam is connected, the tenon fourth of the twelve earthly branches structure of crossbeam tip includes: the first sliding groove, the first tenon and the first mortise are respectively positioned on two sides of the first sliding groove; the mortise and tenon structure of the longitudinal beam comprises: the second sliding groove, a second tenon and a second mortise are respectively positioned on two sides of the second sliding groove; the first tenon is matched with the second tenon, and the first sliding groove and the second sliding groove form a groove hole for embedding the wedge block; tenon and mortise in the mortise structure set up the clearance of setting, it has elastic sealed glue to fill in the clearance after the solidification.
2. The spliced vibration damping lead frame applied to the inside of an oil-filled transformer according to claim 1, wherein the sealant is a single-component polyurethane sealant.
3. The spliced vibration-damping lead frame applied to the inside of an oil-immersed transformer according to claim 1, wherein an auxiliary mortise and tenon structure is further arranged on the outer side of the mortise and tenon structure, and the auxiliary mortise and tenon structure is formed by mutually meshing the cross beam and the longitudinal beam.
4. The spliced vibration-damping lead frame applied to the interior of an oil-immersed transformer according to claim 1, wherein the wedge block is made of wood.
5. The spliced vibration-damping lead frame applied to the interior of an oil-immersed transformer according to claim 1, wherein the wedge block is made of rubber.
6. The spliced vibration-damping lead frame applied to the interior of an oil-immersed transformer according to any one of claims 1 to 5, wherein the cross beam and the longitudinal beam respectively comprise a plurality of parts, and the parts are connected through a mortise and tenon joint structure.
7. A transformer is characterized in that the spliced vibration reduction lead frame applied to the interior of an oil-immersed transformer in any one of claims 1 to 6 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611176773.0A CN108206089B (en) | 2016-12-19 | 2016-12-19 | Spliced vibration-damping lead wooden frame applied to inside of oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611176773.0A CN108206089B (en) | 2016-12-19 | 2016-12-19 | Spliced vibration-damping lead wooden frame applied to inside of oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN108206089A CN108206089A (en) | 2018-06-26 |
| CN108206089B true CN108206089B (en) | 2020-09-25 |
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| CN201611176773.0A Active CN108206089B (en) | 2016-12-19 | 2016-12-19 | Spliced vibration-damping lead wooden frame applied to inside of oil-immersed transformer |
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| CN111703737B (en) * | 2020-06-18 | 2022-07-05 | 台州恒瑞塑料制品股份有限公司 | Adhesive tape-free reusable sealing piece |
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|---|---|---|---|---|
| CN2864943Y (en) * | 2005-12-13 | 2007-01-31 | 中电电气集团有限公司 | Transformer lead clamp |
| CN102360812A (en) * | 2011-07-28 | 2012-02-22 | 苏州鼎能电力设备有限公司 | Transformer tapping lead support |
| CN202736670U (en) * | 2012-07-02 | 2013-02-13 | 四川省南充晶塔变压器有限公司 | Practical American imitating type transformer lead forming frame |
| CN202905399U (en) * | 2012-11-05 | 2013-04-24 | 鲁特电工股份有限公司 | High and low voltage universal lead support for oil immersed transformer |
| CN203218083U (en) * | 2013-04-11 | 2013-09-25 | 湖北华耀达电气有限公司 | High-voltage lead of oil-immersed transformer |
| CN203552891U (en) * | 2013-10-31 | 2014-04-16 | 山东泰开变压器有限公司 | Lead support for transformer |
| CN205122362U (en) * | 2015-10-31 | 2016-03-30 | 湖北华耀达电气有限公司 | High high -pressure lead fixed device that transships distribution transformer of oily formula |
-
2016
- 2016-12-19 CN CN201611176773.0A patent/CN108206089B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| CN2864943Y (en) * | 2005-12-13 | 2007-01-31 | 中电电气集团有限公司 | Transformer lead clamp |
| CN102360812A (en) * | 2011-07-28 | 2012-02-22 | 苏州鼎能电力设备有限公司 | Transformer tapping lead support |
| CN202736670U (en) * | 2012-07-02 | 2013-02-13 | 四川省南充晶塔变压器有限公司 | Practical American imitating type transformer lead forming frame |
| CN202905399U (en) * | 2012-11-05 | 2013-04-24 | 鲁特电工股份有限公司 | High and low voltage universal lead support for oil immersed transformer |
| CN203218083U (en) * | 2013-04-11 | 2013-09-25 | 湖北华耀达电气有限公司 | High-voltage lead of oil-immersed transformer |
| CN203552891U (en) * | 2013-10-31 | 2014-04-16 | 山东泰开变压器有限公司 | Lead support for transformer |
| CN205122362U (en) * | 2015-10-31 | 2016-03-30 | 湖北华耀达电气有限公司 | High high -pressure lead fixed device that transships distribution transformer of oily formula |
Non-Patent Citations (1)
| Title |
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| 《浅析变压器的事故预防》;浅析变压器的事故预防;《中国新技术新产品》;20151025;正文第1-5节 * |
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| CN108206089A (en) | 2018-06-26 |
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