CN205069328U - Transformer coil constant voltage closing device - Google Patents
Transformer coil constant voltage closing device Download PDFInfo
- Publication number
- CN205069328U CN205069328U CN201520737358.2U CN201520737358U CN205069328U CN 205069328 U CN205069328 U CN 205069328U CN 201520737358 U CN201520737358 U CN 201520737358U CN 205069328 U CN205069328 U CN 205069328U
- Authority
- CN
- China
- Prior art keywords
- oil hydraulic
- hydraulic cylinder
- coil
- pull bar
- top board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a transformer coil constant voltage closing device, fill up including holding down plate, top board, oil hydraulic cylinder fixed plate, pull rod and card, wherein, the one end of pull rod is fixed in the center on holding down plate top department, its other end up and be the free end, the circumference of pull rod is provided with the draw -in groove on co -altitude not, the through -hole suit that oil hydraulic cylinder fixed plate and top board top -down all offered through its center is on the pull rod, and the oil hydraulic cylinder fixed plate prescribes a limit to on the pull rod below certain draw -in groove through a calorie pad, the week of oil hydraulic cylinder fixed plate upwards evenly is provided with a plurality of oil hydraulic cylinders that are used for for last pressure plate, during the user state, the coil is located between holding down plate and the top board. When pressurizeing to the oil hydraulic cylinder, the oil hydraulic cylinder extension bar promotes the top board and moves down to compress tightly the coil, the pressure through oil pressure system setting makes the oil hydraulic cylinder produce an invariable pressure, thus make the coil in dry run under the circumstances that coil axial height diminishes, give a coil constant pressure all the time.
Description
Technical field:
The utility model relates to transformer coil and manufactures field, particularly relates to a kind of transformer coil constant-voltage hold down gag.
Background technology:
The requirement run transformer safety along with user is more and more higher, and anti-short circuit capability has become an important indicator of transformer specifications.And the anti-short circuit capability of transformer and the device body degree of packing have substantial connection, when coil is not damaged by pressure, the device body degree of packing is higher, and anti-short circuit capability is stronger.Coil Constant pressure drying is the important measures improving product anti-short circuit capability, its principle is that single coil passes through to design the Short Circuit withstand power provided in advance, be that coil axes is to precompression by this masterpiece, by constant voltage hold down gag coil is placed in drying chamber and carries out drying process, the axial dimension in this power effect lower coil can be found out accurately, when determining that product is set with, each coil needs the actual size of adjustment, under making same pressing plate, each coil all can be subject to the precompression being equal to short-circuit force, in the indeformable situation of coil, short-circuit force is offset when product is short-circuited, to reach the object of anti-short circuit capability.
Utility model content:
For realizing above object, the utility model provides the transformer coil constant-voltage hold down gag that a kind of scope of application is wide, thrust even, operate steadily.
For achieving the above object, the utility model adopts following technical scheme to be achieved:
A kind of transformer coil constant-voltage hold down gag, comprises lower platen, top board, oil hydraulic cylinder fixed head, pull bar and mat; Wherein,
One end of pull bar is fixed on the center on lower platen top, its other end upward and be free end, the circumference of pull bar is provided with draw-in groove on differing heights, the through hole that oil hydraulic cylinder fixed head and top board are all offered by its center is from top to bottom sleeved on pull bar, and oil hydraulic cylinder fixed head is limited on pull bar below certain draw-in groove by mat, the circumference of oil hydraulic cylinder fixed head is evenly provided with some for executing stressed oil hydraulic cylinder to top board; During using state, coil is between lower platen and top board.
The utility model further improves and is: also comprise the interstage sleeve for preventing mat from deviating from from pull bar draw-in groove, and interstage sleeve is cylindrical shape interstage sleeve, and it is sleeved in the circumference of mat.
The utility model further improves and is: also comprise the packing ring for regulating gap between oil hydraulic cylinder fixed head and mat.
The utility model further improves and is: extension bar one end of each oil hydraulic cylinder is all fixed on oil hydraulic cylinder fixed head by oil hydraulic cylinder hold-down nut.
The utility model further improves and is: one end of pull bar is fixed on the center on lower platen top by pull bar holder.
The utility model further improves and is: pull bar holder is fixed on the center on lower platen top by set bolt.
The utility model further improves and is: also comprise some coil support cushion blocks, during using state, is provided with coil support cushion block between coil and lower platen and between coil and top board.
The utility model further improves and is: the through hole bottom that top board center is offered offers importing groove.
The utility model further improves and is: mat is made up of two semi-circular shape mats.
Relative to prior art, the utility model has following beneficial effect:
The utility model differing heights on pull bar is provided with draw-in groove, and can meet the compression of differing heights coil, the scope of application is large; Oil hydraulic cylinder is distributed in the circumferentially a certain of oil hydraulic cylinder fixed head, uniform force application, compared with the hold down gag being arranged on center with oil hydraulic cylinder, each point on coil stressed evenly; Pull bar is fixed on the center on lower platen top, during coil pressing, can limit top board and offset, and oil cylinder of comparing is more stable at hold down gag that is middle, pull bar movement.
Further, by arranging interstage sleeve, deviate from from pull bar draw-in groove to prevent mat.
Further, by arranging packing ring, for gap between adjustment oil hydraulic cylinder fixed head and mat.
Further, offer importing groove by the through hole bottom offered at top board center, thus be stuck on the draw-in groove of pull bar when avoiding top board to move down.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of transformer coil constant-voltage hold down gag of the utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
In figure: 1-lower platen, 2-coil support cushion block, 3-set bolt, 4-pull bar holder, 5-pull bar, 6-top board, 7-oil hydraulic cylinder, 8-oil hydraulic cylinder hold-down nut, 9-oil hydraulic cylinder fixed head, 10-mat, 11-interstage sleeve, 12-packing ring.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1 and Fig. 2, a kind of transformer coil constant-voltage hold down gag of the utility model, comprises lower platen 1, top board 6, oil hydraulic cylinder fixed head 9, oil hydraulic cylinder 7, pull bar 5, mat 10, packing ring 12 and interstage sleeve 11.
Wherein, one end of pull bar 5 is fixed on the center on lower platen 1 top, and upward and be free end, the circumference of pull bar 5 is provided with draw-in groove to its other end on differing heights, to meet the compression of differing heights coil, the through hole that oil hydraulic cylinder fixed head 9 and top board 6 are all offered by its center is from top to bottom sleeved on pull bar 5, and oil hydraulic cylinder fixed head 9 to be limited on pull bar 5 below certain draw-in groove by mat 10, the circumference of oil hydraulic cylinder fixed head 9 is evenly provided with some for executing stressed oil hydraulic cylinder 7 to top board 6, be parallel to one by the pipeline of self and concentrate oil pipe line, to pressurize simultaneously, when pressurizeing to oil hydraulic cylinder 7, oil hydraulic cylinder 7 extension bar promotes top board 6 and moves down, thus coil pressing, the pressure set by oil hydraulic system makes oil hydraulic cylinder 7 produce a constant pressure, thus make coil in dry run when coil axial height reduces, all the time with a constant pressure coil pressing, during use, the coil that need compress is placed between two pressing plates, distance between two pressing plates reduces with the reduction of coil height, and make top board 6 be accompanied with a constant pressure by oil hydraulic system, compress to all the time in the abnormal situation reduced at coil dry run coil axial height by upper and lower pressing plate, oil hydraulic cylinder 7 and pull bar 5 the constant pressure of coil one to coil.
Further, the utility model also comprises the interstage sleeve 11 for preventing mat 10 from deviating from from pull bar 5 draw-in groove, and interstage sleeve 11 is cylindrical shape interstage sleeve, and it is sleeved in the circumference of mat 10.In addition, the packing ring 12 for regulating gap between oil hydraulic cylinder fixed head 9 and mat 10 is also comprised.
Further, hydraulic stem one end of above-mentioned each oil hydraulic cylinder 7 is all fixed on oil hydraulic cylinder fixed head 9 by oil hydraulic cylinder hold-down nut 8.
Further, one end of above-mentioned pull bar 5 is fixed on the center on lower platen 1 top by pull bar holder 4.And pull bar holder 4 is fixed on the center on lower platen 1 top by set bolt 3.
Further, the utility model also comprises some coil support cushion blocks 2, during using state, is provided with coil support cushion block 2 between coil and lower platen 1 and between coil and top board 6.
Further, the through hole bottom that top board 6 center is offered offers importing groove, thus is stuck on the draw-in groove of pull bar 5 when avoiding top board 6 to move down.Mat 10 is made up of two semi-circular shape mats.
During use, lower platen 1 places coil support cushion block 2 according to the diameter of institute's line ball circle, coil is hung on coil lip block 2, then coil support cushion block 2 is placed on the top of coil, top board 6 is dropped on upper coil lip block 2, again the oil hydraulic cylinder fixed head 9 of band oil hydraulic cylinder 7 is placed on above top board 6, select the packing ring 12 of suitable thickness to be enclosed within pull bar 5 according to the distance of draw-in groove position on the clamping position distance pull bar 5 on fixed head 9 top and be placed on fixed head 9 top, then mat 10 is stuck in from the nearest draw-in groove of packing ring, the excircle of mat puts interstage sleeve 11, when preventing from exerting pressure, mat 10 is deviate from from draw-in groove.The concentrated oil pipe line of oil hydraulic cylinder is connected to oil hydraulic system, and when starting oil hydraulic system pressurization, oil hydraulic cylinder 7 extension bar promotes top board 6 and moves down coil pressing.In coil dry run, along with moisture loss in coil insulation part, coil height declines, and oil hydraulic cylinder extension bar promotes top board 6 and also and then declines, and applies a constant pressure to coil all the time, to realize the Constant pressure drying to coil.
Illustrate the utility model described in above-described embodiment; though be described by specific term in literary composition; but protection range of the present utility model can not be limited with this; the personage being familiar with this technical field can change it or revise and reach equivalent object after understanding spirit of the present utility model and principle; and this equivalence is changed and amendment, all should be covered by right and define in category.
Claims (9)
1. a transformer coil constant-voltage hold down gag, is characterized in that: comprise lower platen (1), top board (6), oil hydraulic cylinder fixed head (9), pull bar (5) and mat (10); Wherein,
One end of pull bar (5) is fixed on the center on lower platen (1) top, its other end upward and be free end, the circumference of pull bar (5) is provided with draw-in groove on differing heights, the through hole that oil hydraulic cylinder fixed head (9) and top board (6) are all offered by its center is from top to bottom sleeved on pull bar (5), and oil hydraulic cylinder fixed head (9) is limited to below pull bar (5) certain draw-in groove upper by mat (10), the circumference of oil hydraulic cylinder fixed head (9) is evenly provided with some for executing stressed oil hydraulic cylinder (7) to top board (6), during using state, coil is positioned between lower platen (1) and top board (6).
2. a kind of transformer coil constant-voltage hold down gag according to claim 1, it is characterized in that: also comprise the interstage sleeve (11) for preventing mat (10) from deviating from from pull bar (5) draw-in groove, interstage sleeve (11) is cylindrical shape interstage sleeve, and it is sleeved in the circumference of mat (10).
3. a kind of transformer coil constant-voltage hold down gag according to claim 1, is characterized in that: also comprise the packing ring (12) for regulating gap between oil hydraulic cylinder fixed head (9) and mat (10).
4. a kind of transformer coil constant-voltage hold down gag according to claim 1, is characterized in that: extension bar one end of each oil hydraulic cylinder (7) is all fixed on oil hydraulic cylinder fixed head (9) by oil hydraulic cylinder hold-down nut (8).
5. a kind of transformer coil constant-voltage hold down gag according to claim 1, is characterized in that: one end of pull bar (5) is fixed on the center on lower platen (1) top by pull bar holder (4).
6. a kind of transformer coil constant-voltage hold down gag according to claim 5, is characterized in that: pull bar holder (4) is fixed on the center on lower platen (1) top by set bolt (3).
7. a kind of transformer coil constant-voltage hold down gag according to claim 1, it is characterized in that: also comprise some coil support cushion blocks (2), during using state, between coil and lower platen (1) and between coil and top board (6), be provided with coil support cushion block (2).
8. a kind of transformer coil constant-voltage hold down gag according to claim 1, is characterized in that: the through hole bottom that top board (6) center is offered offers importing groove.
9. a kind of transformer coil constant-voltage hold down gag according to claim 1, is characterized in that: mat (10) is made up of two semi-circular shape mats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520737358.2U CN205069328U (en) | 2015-09-22 | 2015-09-22 | Transformer coil constant voltage closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520737358.2U CN205069328U (en) | 2015-09-22 | 2015-09-22 | Transformer coil constant voltage closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205069328U true CN205069328U (en) | 2016-03-02 |
Family
ID=55395849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520737358.2U Expired - Fee Related CN205069328U (en) | 2015-09-22 | 2015-09-22 | Transformer coil constant voltage closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205069328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014484A (en) * | 2017-05-19 | 2017-08-04 | 广西电网有限责任公司电力科学研究院 | A kind of Transformer Winding thrust experimental rig |
| CN107978435A (en) * | 2017-12-26 | 2018-05-01 | 海泉风雷新能源发电股份有限公司 | A kind of transformer pulling plate |
-
2015
- 2015-09-22 CN CN201520737358.2U patent/CN205069328U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014484A (en) * | 2017-05-19 | 2017-08-04 | 广西电网有限责任公司电力科学研究院 | A kind of Transformer Winding thrust experimental rig |
| CN107978435A (en) * | 2017-12-26 | 2018-05-01 | 海泉风雷新能源发电股份有限公司 | A kind of transformer pulling plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20180922 |