CN2697806Y - Puller strap structure for 1500-core of transformer - Google Patents
Puller strap structure for 1500-core of transformer Download PDFInfo
- Publication number
- CN2697806Y CN2697806Y CN 200420035444 CN200420035444U CN2697806Y CN 2697806 Y CN2697806 Y CN 2697806Y CN 200420035444 CN200420035444 CN 200420035444 CN 200420035444 U CN200420035444 U CN 200420035444U CN 2697806 Y CN2697806 Y CN 2697806Y
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- CN
- China
- Prior art keywords
- groove
- screw rod
- transformer
- puller strap
- strap structure
- 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 - Lifetime
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Abstract
The utility model belongs to the technical field of the transformer manufacturing, in particular to a puller strap structure for the iron core of transformer. The puller strap structure for the iron core of transformer comprises a clamping element, a strap, a screw on the strap, a nut on the screw and a fixed plate connected with the clamping element. The fixed plate is provided with a groove and an angling hole, and the groove is positioned at the upper part of the angling hole. The screw passes through the angling hole, and the end head of the screw is positioned in the groove. The nut is positioned in the groove and is sheathed on the end head of the screw. The utility model improves the electromagnetic field distribution of the end part of the winding and has the advantages of simple structure and convenient use.
Description
Technical field
The utility model belongs to technical field of transformer manufacturing, is specifically related to a kind of transformer core puller strap structure.
Background technology
Concerning the ultra high voltage high-power transformer, folder from top to bottom is to be used for clamping last lower yoke unshakable in one's determination, makes iron core become a general frame structure by crossbeam, the effect of filling up pin, arm-tie and iron yoke drawstring.Because folder and iron yoke drawstring are between winding and core lamination and be in the end of winding, there are stronger stray field and electric field in this place, and therefore reasonably the structure at this position of design has great importance.At present the iron yoke puller strap structure that generally adopts of domestic each transformer manufactory as shown in Figure 1: the support plate of the fastening drawstring of welding on the folder of high and low pressure side, and this support plate is perpendicular to the bending part of iron yoke drawstring, and the screw rod of drawstring is fastening with nut by support plate.This structure is feasible to the product below the 220kV electric pressure, but unreasonable the product more than the 330kV electric pressure.Because for the product of high voltage large capcity, the stray field and the electric field of winding overhang are stronger, and tiltedly a support plate that comes out is for magnetic field, the Electric Field Distribution of end, and the layout of overhang insulation distance and lead-in wire is extremely disadvantageous.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of and can effectively improve the transformer core puller strap structure that the winding overhang electromagnetic field distributes and reduces insulation distance significantly at weak point of the prior art.
The technical scheme that solution the utility model technical problem is adopted is this transformer core puller strap structure, comprise the screw rod on folder, drawstring, the drawstring, nut is arranged on the screw rod, there is fixed head to be connected with folder, have groove and inclined hole on the fixed head, groove is positioned at the top of inclined hole, and screw rod passes inclined hole, the termination of screw rod places in the groove, and nut places in the groove and is enclosed within on the termination of screw rod.
The electromagnetic field that the utility model has improved winding overhang distributes, and reduces more than the insulation distance 50mm.The utility model also is simple in structure and convenient in use simultaneously.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail.
Fig. 1 is the structural representation of transformer core puller strap structure in the prior art
Fig. 2 is a structural representation of the present utility model
Among the figure: 1-folder 2-fixture 3-nut 4-packing ring 5-screw rod 6-drawstring 7-groove 8-inclined hole 9-support plate
Embodiment
In the present embodiment, the utility model includes folder (1), screw rod (5), nut (3), drawstring (6), there is fixed head (2) to be connected with folder (1), folder (1) connects together by welding with fixed head (2), the outer surface of the outer surface of folder (1) and fixture (2) at grade, promptly the outer surface smoother of fixture (2) excessively arrives the outer surface of folder (1).Have groove (7) and inclined hole (8) on the fixed head (2), groove (7) is positioned at the top of inclined hole (8), the baseplane of groove (7) is vertical with the center line of inclined hole (8), the screw rod (5) that is fastened with drawstring (6) passes the inclined hole (8) on the fixed head (2), the termination of screw rod (5) places in the groove (7), and nut (3) is enclosed within on the termination of screw rod (5) by being threaded.On the screw rod (5) packing ring (4) is arranged simultaneously, packing ring (4) places the below of groove (7) inner nut (3).Because the termination of nut (3) and screw rod (5) is positioned at groove (7), effectively improve electromagnetic field and distribute, reduced insulating regions.
Claims (4)
1, a kind of transformer core puller strap structure, comprise the screw rod (5) on folder (1), drawstring (6), the drawstring (6), nut (3) is arranged on the screw rod (5), (2) are connected with folder (1) to it is characterized in that fixed head is arranged, have groove (7) and inclined hole (8) on the fixed head (2), groove (7) is positioned at the top of inclined hole (8), and screw rod (5) passes inclined hole (8), the termination of screw rod (5) places in the groove (7), and nut (3) places in the groove (7) and is enclosed within on the termination of screw rod (5).
2, transformer core puller strap structure according to claim 1, the outer surface that it is characterized in that the outer surface of folder (1) and fixture (2) at grade.
3, transformer core puller strap structure according to claim 1 and 2 is characterized in that folder (1) and fixed head (2) connect together by welding.
4, transformer core puller strap structure according to claim 1 and 2, it is characterized in that screw rod is arranged has packing ring (4) on (5), and packing ring (4) places the below of groove (7) inner nut (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420035444 CN2697806Y (en) | 2004-03-26 | 2004-03-26 | Puller strap structure for 1500-core of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420035444 CN2697806Y (en) | 2004-03-26 | 2004-03-26 | Puller strap structure for 1500-core of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697806Y true CN2697806Y (en) | 2005-05-04 |
Family
ID=34773240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420035444 Expired - Lifetime CN2697806Y (en) | 2004-03-26 | 2004-03-26 | Puller strap structure for 1500-core of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697806Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934197A (en) * | 2015-06-26 | 2015-09-23 | 镇江天力变压器有限公司 | Clamping and noise reducing structure for epoxy cast dry-type transformer core |
-
2004
- 2004-03-26 CN CN 200420035444 patent/CN2697806Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934197A (en) * | 2015-06-26 | 2015-09-23 | 镇江天力变压器有限公司 | Clamping and noise reducing structure for epoxy cast dry-type transformer core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140326 Granted publication date: 20050504 |