CN106816289B - A kind of universal dry-type transformer cushion block of superposing type - Google Patents
A kind of universal dry-type transformer cushion block of superposing type Download PDFInfo
- Publication number
- CN106816289B CN106816289B CN201710195837.XA CN201710195837A CN106816289B CN 106816289 B CN106816289 B CN 106816289B CN 201710195837 A CN201710195837 A CN 201710195837A CN 106816289 B CN106816289 B CN 106816289B
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- Prior art keywords
- cushion block
- thin
- plate element
- dry
- type transformer
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Classifications
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention provides a kind of universal dry-type transformer cushion blocks of superposing type, including upper cushion block, lower cushion block, high-tension coil limiting device, insulating cylinder limiting device and cushion block positioning device；Wherein upper cushion block is formed by stacking by several thin-plate elements.The present invention can realize independent assortment, versatile, disclosure satisfy that the needs of different models of equipment, have broad application prospects.
Description
Technical field
The present invention relates to power transformer technical fields, more specifically, are related to a kind of dry-type transformer cushion block.
Background technology
Cushion block is that carrying, compression and positioning high-voltage coil and low-voltage coil and insulating cylinder are played in dry-type transformer (hereinafter referred to as dry change)
Insulated product is divided into, lower cushion block.
It is required according to the technology of dry-type transformer manufacturer, it is exhausted among the length of cushion block, height, width and cushion block
Edge cylinder is low by the height of air insulation clearance, should all require to manufacture according to these technologies.Due to different voltages grade,
Cushion block specification used in the dry-type transformer of different capabilities differ in addition two it is dry become manufacturers to same voltage class,
The design of the dry change cushion block of identical capacity is all different.Cause now current cushion block manufacturing firm all can only be according to every transformer
The drawing requirement of manufacturer and be that every or several transformer makes cushion block to measure, can not get ready the goods in advance, it is logical it is even more impossible to realize
With change.And dry-type transformer manufacturer also due to the continuous variation of client and demand and can not inventory's cushion block.
The production of China's cushion block is mostly to be molded in mold with thermosetting plastics absolutely, and the production cycle is long, and efficiency is low,
Deburring is also wanted after formed product, often also has situations such as time waste product occurs, it is time-consuming and laborious；Occasionally there is the factory of prefabricated large-scale square
Family, but also needs to cut, and subsequent handlings, waste of materials, a large amount of dust of generation such as chisels and carves and also pollutes environment, the supply time improves
Unobvious.
And the dry varying flow rate in China is very big now, manufacturing process is quite ripe.The dry manufacturing speed for becoming main body quickly, often
Will be first upper, the design drawing of lower cushion block gives cushion block manufacturer, it is allowed to produce in advance, and cushion block supplies past contact and often breaks
Goods is done for most importantly one and is become in order, the transformer that several voltage class are different or capacity is different also often occurs, directly
Cushion block manufacturer is caused not supply in time, transformer production producer can only urge waiting, and the risk of promise breaking improves.
Invention content
In view of the above problems, the object of the present invention is to provide a kind of universal dry-type transformer cushion block of superposing type, to solve
It is dry at present become cushion block can not fast supply, can not be general the problem of.
The universal dry-type transformer cushion block of a kind of superposing type provided by the invention, including upper cushion block, lower cushion block, high-tension coil
Limiting device, insulating cylinder limiting device and cushion block positioning device；Wherein upper cushion block is formed by stacking by several thin-plate elements；It is described thin
Rectangular opening is provided in the middle part of plate unit, the lower surface of thin-plate element is recessed displacement slot, position along the both sides of rectangular opening length direction
It is uniformly distributed on the groove face of shifting slot several through limit hole；The upper surface of thin-plate element is equipped with several positioning grooves, lower surface
Equipped with several positioning protrusion, positioning protrusion and the positioning groove of adjacent sheet unit carry out engaging positioning；High-tension coil limiting dress
It puts and is arranged in the displacement slot of lower part thin-plate element with insulating cylinder limiting device；Upper cushion block is identical with underlay block structure, by upper pad
Block forms lower cushion block, and be oppositely arranged with upper cushion block after being inverted 180 °；Cushion block positioning device is arranged on lower cushion block bottom lip list
In the displacement slot of member, for lower cushion block to be fixed on the transformer.
Furthermore it is preferred that structure be to be additionally provided with briquetting in the top of upper cushion block.
Furthermore it is preferred that structure be to be additionally provided with insulation spacer in upper cushion block bottom and lower cushion block the top.
Furthermore it is preferred that structure be that high-tension coil limiting device includes limiting transverse slat, limiting riser and to be arranged on limiting horizontal
Limit protrusion on plate, limit protrusion can be mutually clamped with what is be distributed on displacement slot through limit hole.
Furthermore it is preferred that structure be, the thin-plate element surrounding have chamfering, chamfering number of degrees 20-50 degree；Thin-plate element is wide
It spends for 40mm-100mm, thickness 5mm-20mm, length 60mm-180mm；The height of displacement slot indent be 2.5-10mm, position
The width for moving slot groove face is 2-10mm.
Furthermore it is preferred that structure be, briquetting formed using metal stamping or with thermosetting plastics, thermoplastic be molded
Or it is molded；Briquetting bottom is equipped with protrusion or salient point, is used for and upper cushion block is engaged.
Furthermore it is preferred that structure be, thin-plate element select thermosetting plastics or thermoplastic molding or be molded；On
Cushion block and lower cushion block be formed by stacking using the identical thin-plate element of size or according to size increments or the laminated structure to successively decrease and
Into.
Furthermore it is preferred that structure be that high-tension coil limiting device, insulating cylinder limiting device, cushion block positioning device use
Thermosetting plastics or thermoplastic molding are molded.
Furthermore it is preferred that structure be that two R angles of thin-plate element side are greater than or equal to two R angles of opposite side.
Furthermore it is preferred that structure be also set up on thin-plate element several run through thin-plate element heat emission hole.
From technical solution above it is found that a kind of universal dry-type transformer cushion block of superposing type of the present invention has with following
Beneficial effect：
1. thin-plate element can carry out same widths in advance, thickness, the mass production of different length, other accessories are also
So, it is possible to realize needs at any time, takes at any time.
2. it can select to meet the pre- of length according to the variation of high-voltage coil and low-voltage coil wall thickness and the variation of air insulation clearance
Sheeting unit is overlapped by dry change insulation height requirement；Also thin-plate element different in size may be selected and become insulation height by dry
It is required that being overlapped, it is freely combined, it is convenient and efficient.
3. in the direction of the width, the cushion block of voltage levels needs wider, two groups can be installed side by side in same position and reached
The thin-plate element of insulation height and length, top only need to change one piece bigger briquetting.
4. the chamfering of thin-plate element inside and outside, step design can extend creepage distance naturally after superposition, increase dry change
The safety and reliability of operation.
5. high-tension coil limiting device can make flexible mobile adjustment according to the variation of high-tension coil wall thickness, right always
High-tension coil is limited.
6. the change for the position that insulating cylinder limiting device can be according to insulating cylinder between high-voltage coil and low-voltage coil in air insulation clearance
Change and move variation, firmly limit insulating cylinder always.
7. cushion block positioning device can make flexibly mobile adjustment according to the interval of the cushion block positioning pin on dry change lower part channel steel,
Facilitate fixed cushion block main body.
8. cushion block is added to after the dry insulation height for becoming and requiring on, is inverted 180 ° and can be used as lower cushion block.
9. thin-plate element design is lightening, air entrapment can be effectively reduced, partial discharge is reduced, can also reduce cost, the amount of convenience
Production.
10. the design of thin-plate element central rectangular aperture improves the thermal diffusivity of cushion block, noise reduction is also apparent after superposition.
11. thin-plate element counter-bending strong shock resistance after superposition.
12. the design of briquetting uses, it is possible to increase it is dry to become upper cushion block housing screw and the contact area of upper cushion block, further carry
The shock resistance bending resistance of cushion block is risen, can also stabilize high-voltage coil and low-voltage coil well.
13. the component part of cushion block can flexible assembling according to actual needs, convenient, pragmatic general.
14. cushion block is versatile, available for reactor, arc suppression transformer etc..
Description of the drawings
By reference to the explanation below in conjunction with attached drawing, and with the present invention is more fully understood, of the invention is other
Purpose and result will be more apparent and should be readily appreciated that.In the accompanying drawings：
Fig. 1 is the structure diagram of the embodiment of the present invention 1；
Fig. 2 is Fig. 1 sectional views；
Fig. 3 is the structure diagram of thin-plate element upper surface；
Fig. 4 is the structure diagram of thin-plate element lower surface；
Fig. 5 is the structure diagram of insulation burrel positioning device；
Fig. 6 is the vertical view of Fig. 5；
Fig. 7 be in Fig. 6 C-C to sectional view；
Fig. 8 is the structure diagram of high-tension coil limiting device one side；
Fig. 9 is the vertical view of Fig. 8；
Figure 10 is the structure diagram of high-tension coil limiting device another side；
Figure 11 is the structure diagram of cushion block positioning device；
Figure 12 be in Figure 11 C-C to sectional view；
Figure 13 is the structure diagram of the embodiment of the present invention 2
Reference numeral therein includes：Upper cushion block 1, lower cushion block 2, high-tension coil limiting device 3, insulating cylinder limiting device 4,
Briquetting 5, insulation spacer 6, cushion block positioning device 7, thin-plate element 11, limiting transverse slat 31, limit protrusion 32, limiting riser 33, position
Move slot 111, through limit hole 112, positioning protrusion 113, rectangular opening 114, positioning groove 115.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific embodiment
For a kind of universal dry-type transformer cushion block structure of superposing type of the embodiment of the present invention is described in detail, below with reference to
Specific embodiments of the present invention are described in detail in attached drawing.
Embodiment 1
As shown in figs. 1-12, the universal dry-type transformer cushion block of a kind of superposing type, including upper cushion block 1, lower cushion block 2, high pressure
Coil limiting device 3, insulating cylinder limiting device 4 and cushion block positioning device 7；Wherein upper cushion block 1 is superimposed by several thin-plate elements 11
It forms；11 middle part of thin-plate element is provided with rectangular opening 114, the lower surface of thin-plate element 11, along 114 length direction of rectangular opening
Both sides are recessed displacement slot 111, are uniformly distributed on the groove face of displacement slot 111 several through limit hole 112；Thin-plate element 11
Upper surface is equipped with several positioning grooves 115, and lower surface is equipped with several positioning protrusion 113, the convex of adjacent sheet unit 11
113 are played to carry out engaging positioning with positioning groove 115；High-tension coil limiting device 3 and insulating cylinder limiting device 4 are arranged on lowest part
In the displacement slot 111 of thin-plate element 11；Upper cushion block 1 is identical with 2 structure of lower cushion block, and underlay is formed after upper cushion block 1 is inverted 180 °
Block 2, and be oppositely arranged with upper cushion block 1, cushion block positioning device 7 is set in the displacement slot 111 of 2 bottom lip unit 11 of lower cushion block,
For lower cushion block 2 to be fixed on the transformer.Briquetting 5 is additionally provided in the top of upper cushion block 1.Upper 1 bottom of cushion block with
And 2 the top of lower cushion block is additionally provided with insulation spacer 6.
For more than cushion block 1, upper cushion block 1 be superimposed by multi-disc length, width the insulating thin unit 11 identical with thickness and
Into.Thin-plate element 11 is selected thermosetting plastics or thermoplastic molding or is molded, and thin-plate element 11 has the class of insulation
The advantages that height, impact resistance, bending resistance is strong, fire-retardant, and resistance to arc duration is long.
There is a hollow out rectangular opening 114 on every 11 front center point position of thin-plate element, be mainly used for radiating.Thin-plate element
11 left side two corners design R 5mm × 5mm (or not setting R angles or other R angle squares cun), right side two corners design R 20mm × 15mm, (or
R angles or other R angle squares cun are not set)；Thin plate surrounding carries out chamfer design, and the chamfering number of degrees are 20-50 degree, preferably 25-30 degree (
Can not chamfer design), to extend creepage distance naturally after being superimposed；11 reverse side of thin-plate element designs displacement using rectangular step
Slot 111, the groove face of displacement slot 111 may be used sand surface treatment, displacement slot 111 in addition to can also extend naturally after superposition climb electricity away from
From outer, the adjusting movement of limiting device and positioning device can be also used for.The space that displacement slot is formed also has heat dissipation, noise reduction work(
Effect.
It in this way can identical with thickness (for width in the range of 40mm-100mm, thickness be in 5mm- for mass production width in advance
In the range of 20mm), the thin-plate element 11 of length different (length is controlled in the range of 60mm-180mm).Such as become insulation height by dry
Requirement and be overlapped that (such as 50 millimeters of insulation height, that is just folded using the thin-plate element 11 of 10 5 millimeters of same thickness
Add).According to dry change design drawing high-voltage coil and low-voltage coil and between air insulation clearance overall width, find out the thin plate list of suitable length
Member 11 is overlapped.It stays there are two the bigger R angles of angle, for being added to after certain altitude on the preferred right side of thin-plate element 11
Dry change iron core can be avoided at R angles naturally.There is air insulation clearance between dry-type transformer high-voltage coil and low-voltage coil, can generally be put in gap
Put insulating cylinder.Insulating cylinder is general and high-voltage coil and low-voltage coil maintains an equal level or is higher by certain altitude.When insulating cylinder maintains an equal level with high-voltage coil and low-voltage coil,
The block portion that thin-plate element 11 is superimposed is directly born against on high-voltage coil and low-voltage coil, the insulation at 11 reverse side displacement slot 111 of thin-plate element
After cylinder limiting device 4 regulates spacing, positioning insulating cylinder is directly blocked, prevents from moving.When insulating cylinder is higher by high-voltage coil and low-voltage coil one
When determining height, one or a few thin-plate element 11 can be found out previously according to dry change design requirement and cut, be superimposed upon cushion block master
Below body, the length that need to be cut off is equal to or less than the air insulation clearance on drawing, and insulating cylinder the raised area passes through the thin of cutting
Block with the insulating cylinder limiting device 4 at first piece or second piece complete 11 reverse side displacement slot 111 of thin-plate element in 11 gap of plate unit
Firmly and position.Thin-plate element 11 after cutting can also be largely prefabricated, and middle section is reserved according to the variation of thin plate length
The gap of 25mm to 85mm.
Briquetting 5 can be various shapes (such as rectangle, H-shaped, square, circle, butterfly or trapezoidal etc.), can use gold
Category is stamped to form and (can also use flat metal), with thermosetting plastics or thermoplastic molding or can also be molded, can be with
Use (or without) R angles, Length x Width direction can use (or without) chamfer design.One protrusion or several is arranged at 5 lower part of briquetting
Salient point, for the cooperation with thin-plate element 11.
High-tension coil limiting device 3 and insulating cylinder limiting device 4 and cushion block positioning device 7 also use thermosetting plastics or thermoplastic
Property plastic mould pressing or be molded, be likewise supplied with class of insulation height, impact resistance, bending resistance is strong, fire-retardant, during resistance to electric arc
Between it is long the advantages that.Above device coordinates thin-plate element 11 to use all at 11 reverse side displacement slot 111 of thin-plate element.High-tension coil limits
Position device 3 can use at the reverse side displacement slot 111 of complete thin-plate element 11 or cutting thin-plate element 11, be designed according to dry become
The thickness for the high-tension coil that drawing provides, high-tension coil limiting device 3 from the left side of 11 reverse side rectangle displacement slot of thin-plate element 111,
Move right suitable distance, and is run through using what top two rows limit protrusion 32 and 11 rectangular opening both sides of thin-plate element were evenly arranged
Limit hole 112 matches, and has achieved the purpose that positioning, the protrusion of 3 lower part of high-tension coil limiting device at this time should be in high pressure
High-tension coil is bonded on the inside of insulated coil and suitably, has achieved the purpose that high-tension coil is prevented to be subjected to displacement in lifting, transport.
Embodiment 2
As shown in figure 13, the thin-plate element 11 for selecting length different is overlapped according to certain sequence, the trapezoidal body of appearance
Type can more save material in this way, while can avoid dry becoming iron core naturally after the certain altitude that is added to, additionally it is possible to extension climb electricity away from
From.Other structures setting is same as Example 1.
Embodiment 3
A kind of superposing type universal dry-type transformer cushion block also sets up several on thin-plate element 11 through thin-plate element 11
Heat emission hole, other structures are identical with embodiment 1 or 2.Heat emission hole primarily serves the effect of heat dissipation, improves the work of dry-type transformer
Make stability.
Claims (8)
1. a kind of universal dry-type transformer cushion block of superposing type, which is characterized in that including upper cushion block, lower cushion block, high-tension coil limit
Position device, insulating cylinder limiting device and cushion block positioning device；Wherein upper cushion block is formed by stacking by several thin-plate elements；The thin plate
Rectangular opening is provided in the middle part of unit, the lower surface of thin-plate element is recessed displacement slot, displacement along the both sides of rectangular opening length direction
It is uniformly distributed several through limit hole on the groove face of slot, the upper surface of thin-plate element is equipped with several positioning grooves, and lower surface is set
There are several positioning protrusion, positioning protrusion and the positioning groove of adjacent sheet unit carry out engaging positioning；High-tension coil limiting device
It is arranged on insulating cylinder limiting device in the displacement slot of lower part thin-plate element；Upper cushion block is identical with underlay block structure, by upper cushion block
Lower cushion block is formed, and be oppositely arranged with upper cushion block after being inverted 180 °；Cushion block positioning device is arranged on lower cushion block bottom lip unit
Displacement slot in, for by lower cushion block fix on the transformer；Thin-plate element selects thermosetting plastics or thermoplastic molding
Or it is molded；Upper cushion block and lower cushion block are formed by stacking using the identical thin-plate element of size or according to size increments or successively decreased
Laminated structure form；High-tension coil limiting device includes limiting transverse slat, limiting riser and the limiting being arranged on limiting transverse slat
Protrusion, limit protrusion can be mutually clamped with what is be distributed on displacement slot through limit hole.
2. the universal dry-type transformer cushion block of a kind of superposing type according to claim 1, which is characterized in that in upper cushion block
The top is additionally provided with briquetting.
3. the universal dry-type transformer cushion block of a kind of superposing type according to claim 1, which is characterized in that in upper cushion block most
Lower section and lower cushion block the top are additionally provided with insulation spacer.
A kind of 4. universal dry-type transformer cushion block of superposing type according to claim 1, which is characterized in that the thin plate list
First surrounding has chamfering, chamfering number of degrees 20-50 degree；Thin-plate element width is 40mm-100mm, thickness 5mm-20mm, and length is
60mm-180mm；The height of displacement slot indent is 2.5-10mm, and the width of displacement slot groove face is 2-10mm.
5. the universal dry-type transformer cushion block of a kind of superposing type according to claim 2, which is characterized in that briquetting is using gold
Category is stamped to form or is molded or is molded with thermosetting plastics, thermoplastic；Briquetting bottom is equipped with protrusion or salient point, uses
Engaged in upper cushion block.
6. the universal dry-type transformer cushion block of a kind of superposing type according to claim 1, which is characterized in that high-tension coil limits
Position device, insulating cylinder limiting device, cushion block positioning device using thermosetting plastics or thermoplastic molding or are molded；
A kind of 7. universal dry-type transformer cushion block of superposing type according to claim 1, which is characterized in that thin-plate element one
Two R angles of side are greater than or equal to two R angles of opposite side.
8. the universal dry-type transformer cushion block of a kind of superposing type according to claim 1, which is characterized in that on thin-plate element
Also set up several heat emission holes for running through thin-plate element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195837.XA CN106816289B (en) | 2017-03-29 | 2017-03-29 | A kind of universal dry-type transformer cushion block of superposing type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195837.XA CN106816289B (en) | 2017-03-29 | 2017-03-29 | A kind of universal dry-type transformer cushion block of superposing type |
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| Publication Number | Publication Date |
|---|---|
| CN106816289A CN106816289A (en) | 2017-06-09 |
| CN106816289B true CN106816289B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710195837.XA Active CN106816289B (en) | 2017-03-29 | 2017-03-29 | A kind of universal dry-type transformer cushion block of superposing type |
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| JPH1092666A (en) * | 1996-09-18 | 1998-04-10 | Fuji Electric Co Ltd | Through type chalk coil device |
| CN200965820Y (en) * | 2006-10-24 | 2007-10-24 | 谭勇 | Dry-type transformer umbrella type insulation shim |
| CN202405080U (en) * | 2011-12-02 | 2012-08-29 | 中电电气(江苏)股份有限公司 | Assembled insulation cushion block structure for phase shift rectifier transformer |
| CN202616000U (en) * | 2012-04-23 | 2012-12-19 | 大同(上海)有限公司 | Combined-type coil supporting piece for dry-type transformer |
| CN203491067U (en) * | 2013-09-27 | 2014-03-19 | 海南金盘电气有限公司 | Combined cushion block of dry-type transformer |
| CN104091683A (en) * | 2014-06-19 | 2014-10-08 | 国家电网公司 | Dry-type transformer body insulation structure adopting combined cushion blocks |
| CN204926995U (en) * | 2015-09-22 | 2015-12-30 | 中国西电电气股份有限公司 | U type cushion structure for transformer coil |
| CN206040364U (en) * | 2016-09-30 | 2017-03-22 | 镇江市鑫泰绝缘材料有限公司 | Silicon of nai high temperature insulation rubber pad |
| CN206558342U (en) * | 2017-03-29 | 2017-10-13 | 扬州市一铭电气科技有限公司 | A kind of universal dry-type transformer cushion block of superposing type |
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2017
- 2017-03-29 CN CN201710195837.XA patent/CN106816289B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1092666A (en) * | 1996-09-18 | 1998-04-10 | Fuji Electric Co Ltd | Through type chalk coil device |
| CN200965820Y (en) * | 2006-10-24 | 2007-10-24 | 谭勇 | Dry-type transformer umbrella type insulation shim |
| CN202405080U (en) * | 2011-12-02 | 2012-08-29 | 中电电气(江苏)股份有限公司 | Assembled insulation cushion block structure for phase shift rectifier transformer |
| CN202616000U (en) * | 2012-04-23 | 2012-12-19 | 大同(上海)有限公司 | Combined-type coil supporting piece for dry-type transformer |
| CN203491067U (en) * | 2013-09-27 | 2014-03-19 | 海南金盘电气有限公司 | Combined cushion block of dry-type transformer |
| CN104091683A (en) * | 2014-06-19 | 2014-10-08 | 国家电网公司 | Dry-type transformer body insulation structure adopting combined cushion blocks |
| CN204926995U (en) * | 2015-09-22 | 2015-12-30 | 中国西电电气股份有限公司 | U type cushion structure for transformer coil |
| CN206040364U (en) * | 2016-09-30 | 2017-03-22 | 镇江市鑫泰绝缘材料有限公司 | Silicon of nai high temperature insulation rubber pad |
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| Publication number | Publication date |
|---|---|
| CN106816289A (en) | 2017-06-09 |
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