Splice-type vibration-damping lead wooden frame used in oil-immersed transformers

A technology of oil-immersed transformers and vibration-damping leads, which is applied in the directions of transformer/inductor coil/winding/connection, transformer/inductor noise damping, etc., and can solve problems such as poor vibration-damping performance

Active Publication Date: 2020-09-25
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional transformer lead wooden frame mainly considers the support and fixation of the lead wires. Most of them use integrally formed wood, which are fixed and connected by bolts or iron nails, and the vibration reduction performance is poor.

Method used

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  • Splice-type vibration-damping lead wooden frame used in oil-immersed transformers
  • Splice-type vibration-damping lead wooden frame used in oil-immersed transformers
  • Splice-type vibration-damping lead wooden frame used in oil-immersed transformers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a splice-type vibration-damping lead wooden frame applied to the interior of an oil-immersed transformer includes a beam 1 fixed to the upper plywood 12 and lower plywood 12 of the transformer and a longitudinal beam 2 for fixing the lead wires. The longitudinal beam 2 The two ends of the two beams are respectively connected to the two beams 1, and the longitudinal beams 2 are connected to the beams 1 through a mortise and tenon structure.

[0027] The wooden frame spliced ​​by the mortise and tenon structure can buffer and absorb the vibration of the transformer, and realize the effect of vibration reduction and noise reduction on the basis of satisfying the support function of the lead wire.

[0028] On the other hand, in the prior art, the lead wire 11 is clamped on the longitudinal beam 2, and the longitudinal beam 2 drives the lead wire 11 to swing following the vibration of the transformer. Therefore, the joint of the lead wire 11 bears ...

Embodiment 2

[0030] Further improvement on the basis of Embodiment 1, there is a set gap between the tenon head and the tenon groove in the mortise and tenon structure, and the gap is filled with an elastic sealant after curing.

[0031] According to the specifications of the commonly used 180kVA transformer at present, the size of the gap is usually set at 2-4mm. If the gap is too small, it is difficult to fill the sealant completely; if the gap is too large, the strength of the wooden frame cannot meet the use requirements. For transformers of other specifications, the size of the gap can be set as appropriate according to the specifications of the wooden frame.

[0032] The gap is filled with a cured elastic sealant, which can enhance the firmness of the connection. At the same time, due to the cured elastic, when the vibration force is applied, when the tenon moves with the direction of the force, the cured sealing When the rubber is extruded, the tenon is subjected to reverse extrusi...

Embodiment 3

[0035] Such as figure 2 As shown, further improvement on the basis of Embodiment 1, the mortise and tenon structure at the end of the crossbeam 1 includes: a crossbeam chute 101, a crossbeam tenon 103 and a crossbeam mortise 102 respectively located on both sides of the crossbeam chute 101; The mortise and tenon structure of the longitudinal beam 2 includes: a longitudinal beam chute 201, a longitudinal beam tenon 203 and a longitudinal beam tenon 202 respectively located on both sides of the longitudinal beam chute 201; Described beam mortise 102 cooperates with longitudinal beam tenon 203, as image 3 As shown, the beam slot 101 and the longitudinal beam slot 201 form a slot hole 15 for inserting the wedge block 3 .

[0036] Wherein, the cross-sectional shape of the beam tenon 103 and the longitudinal beam tenon 203 is not limited to figure 2 Circular as shown, other shapes such as triangular, rectangular, elliptical or other geometric shapes are also possible.

[0037]...

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PUM

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Abstract

The invention discloses a splicing type vibration-damping lead wooden frame used in an oil-immersed transformer, which comprises cross beams fixed on an upper transformer clamping plate and a lower transformer clamping plate and a longitudinal beam used for fixing the lead, wherein the two ends of the longitudinal beam are respectively connected with the two cross beams through tenon and an mortise structures. A certain gap is arranged between the tenon and the mortise in the mortise and mortise structure, and the gap is filled with an elastic sealing glue after curing. Through the non-rigid connection of the tenon and mortise structure, the vibration of the transformer can be buffered, and the effect of damping and noise reduction is realized on the basis of meeting the lead supporting function.

Description

technical field [0001] The invention relates to the technical field of transformer lead wire frames, in particular to a spliced ​​vibration-damping lead wire frame applied inside an oil-immersed transformer. Background technique [0002] With the continuous expansion of cities and towns in my country, the construction of electric power projects represented by UHV is advancing rapidly, and substations have become the core hub of power transmission. In recent years, many substations are very close to environmentally sensitive areas such as residential areas, schools, and hospitals. The noise pollution of substations has seriously affected the work and life of surrounding residents. Transformers are the main noise source of substations. At present, the noise control of substations mainly focuses on the noise control of transformers. The source of transformer vibration and noise is mainly the magnetostriction of the core silicon steel sheet and the coil winding vibration caused...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/33H01F27/28
CPCH01F27/28H01F27/33
Inventor 徐金莫娟马裕超樊宝珍张霞冯国巍杨臻沈鸿冰
Owner CHINA ELECTRIC POWER RES INST
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