CN203481022U - Assembling structure for mounting magnetic screens on clamping piece of large capacity transformer - Google Patents
Assembling structure for mounting magnetic screens on clamping piece of large capacity transformer Download PDFInfo
- Publication number
- CN203481022U CN203481022U CN201320598778.8U CN201320598778U CN203481022U CN 203481022 U CN203481022 U CN 203481022U CN 201320598778 U CN201320598778 U CN 201320598778U CN 203481022 U CN203481022 U CN 203481022U
- Authority
- CN
- China
- Prior art keywords
- magnetic screen
- clamping piece
- support plate
- piece support
- lower clamping
- 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 provides an assembling structure for mounting two layers of magnetic screens on a supporting plate of a lower clamping piece for a large capacity transformer. Stray losses of the transformer is better lowered, and the assembling structure plays an important role on solving the problem of local overheating of the clamping piece of the transformer, improving the efficiency of the transformer and improving the operation condition of the transformer. The assembling structure has the advantages of being practical, reliable, simple in structure, convenient to mount and the like.
Description
Technical field
The utility model relates to the assembly structure that adopts magnetic screen on a kind of lower clamping piece of transformer, is specifically related to a kind of assembly structure that magnetic screen is installed on the folder of high-power transformer.
Background technology
In transformer running, except the main flux circulating, outside iron core, be also accompanied by all the time the existence of leakage flux in iron core.Particularly jumbo transformer, because the area in the support plate Gai leakage field district on folder is larger, can produce a large amount of eddy current loss, and even some position has produced serious local overheating, thereby affects the life-span of minor insulation part, accelerates the aging of insulating part of transformer.The life loss that the life loss that the local overheating that high-power transformer produces due to leakage field causes causes than ageing of insulation is also serious many, in the course of time by the safe operation of crisis transformer.
Utility model content
The purpose of this utility model is to provide a kind of assembly structure that magnetic screen is installed on the folder of high-power transformer, and this assembly structure can effectively avoid leakage flux to cross the steel plate on described folder, thereby solves the problem of support plate local overheating.
For reaching above object, the assembly structure that magnetic screen is installed on the folder of high-power transformer described in the utility model comprises upper strata magnetic screen, lower floor's magnetic screen, the first barricade, secondary shielding plate, lower clamping piece support plate and offer the fluting cushion block of groove, the upper surface of described lower clamping piece support plate offers groove, in the groove of described lower clamping piece support plate upper surface, offer porose, groove on described fluting cushion block is concordant with the notch of groove on described lower clamping piece support plate, the magnetic screen of described lower floor, the first barricade, upper strata magnetic screen and secondary shielding plate are installed in the groove of described lower clamping piece support plate and fluting cushion block from bottom to top successively, the magnetic screen of described upper strata is provided with described hole and is connected the copper strips with ground connection.
The magnetic screen of described upper strata and lower floor's magnetic screen are all offered porose, hole in the magnetic screen of described upper strata and lower floor's magnetic screen be located at hole on described lower clamping piece support plate directly over, and on the size in the magnetic screen of described upper strata and hole in lower floor magnetic screen and described lower clamping piece support plate, the size in hole is identical.
The shielding of described upper strata and lower floor's shielding are provided with gap, and described gap location is filled with pole.
Between described lower clamping piece support plate and the coil of described transformer, be provided with cross-over block.
The beneficial effects of the utility model are:
The assembly structure that magnetic screen is installed on the folder of high-power transformer described in the utility model is provided with groove at the upper surface of the lower clamping piece support plate of described transformer, and lower floor's magnetic screen is installed in described groove successively, the first barricade, upper strata magnetic screen and secondary shielding plate, thereby make leakage flux as much as possible by the magnetic screen of the good lower floor of magnetic conductivity, the first barricade, upper strata magnetic screen and secondary shielding plate, and then the pass course of change leakage flux, make leakage flux not through described lower clamping piece support plate, strengthen leakage flux simultaneously and crossed area, avoided better leakage flux when through lower clamping piece support plate, to produce larger eddy current loss, and the lower clamping piece support plate local overheating causing therefrom, insulation is reliable, simple in structure, on-the-spot easy for installation.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is vertical view of the present utility model;
Fig. 4 is the enlarged drawing at I place in left view in the utility model;
Fig. 5 is the utility model structural representation of magnetic screen 2 at the middle and upper levels;
Fig. 6 is the structural representation of lower clamping piece support plate 1 in the utility model.
Wherein: 1 is that lower clamping piece support plate, 2 is that upper strata magnetic screen, 3 is that lower floor's magnetic screen, 4 is that fluting cushion block, 5 is that the first barricade, 6 is that secondary shielding plate, 7 is cushion block.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the assembly structure that magnetic screen is installed on the folder of high-power transformer described in the utility model comprises upper strata magnetic screen 2, lower floor's magnetic screen 3, the first barricade 5, secondary shielding plate 6, lower clamping piece support plate 1 and offer the fluting cushion block 4 of groove, the upper surface of described lower clamping piece support plate 1 offers groove, in the groove of described lower clamping piece support plate 1 upper surface, offer porose, Kong Zheng in groove on described lower clamping piece support plate 1 is along offering screwed hole, lower clamping piece support plate 1 upper surface hole is just along offering screwed hole, groove on described fluting cushion block 4 is concordant with the notch of groove on described lower clamping piece support plate 1, described lower floor magnetic screen 3, the first barricade 5, upper strata magnetic screen 2 and secondary shielding plate 6 are installed in the groove of described lower clamping piece support plate 1 and fluting cushion block 4 from bottom to top successively, described upper strata magnetic screen 2 is provided with described hole and is connected the copper strips with ground connection, described upper strata magnetic screen 2 and lower floor's magnetic screen 3 are all offered porose, described upper strata magnetic screen 2 and the hole in lower floor's magnetic screen 3 be located at hole on described lower clamping piece support plate 1 directly over, and on the size in described upper strata magnetic screen 2 and hole in lower floor magnetic screen 3 and described lower clamping piece support plate 1, the size in hole is identical, the shielding of described upper strata and lower floor's shielding are provided with gap, described gap location is filled with pole, between described lower clamping piece support plate 1 and the coil of described transformer, be provided with cross-over block.
Concrete installation process of the present utility model is:
In the punching of lower clamping piece support plate 1 fluting and just along opening screwed hole, object is in order to locate upper strata magnetic screen 2 lower floors magnetic screen 3, the first barricade 5, secondary shielding plate 6, cross-over block, and be connected with ground connection with the copper strips of upper strata magnetic screen 2, then put fluting cushion block 4, the notch of described fluting cushion block 4 is concordant with the notch of lower clamping piece support plate 1, cushion block 7 on fluting cushion block 4 is added, then in the groove of concordant lower clamping piece support plate 1 and fluting cushion block 4, put into lower floor's magnetic screen 3, for guaranteeing to install reliably firmly, prevent floating potential, in lower floor's magnetic screen 3, also need punching, described lower floor magnetic screen 3 bore size and position and lower clamping piece support plate 1 are consistent, cover the first barricade 5, on the first barricade 5, place upper strata magnetic screen 2 again, in upper strata magnetic screen 2, also need perforate, described upper strata magnetic screen 2 bore size and position are consistent with the hole on lower clamping piece support plate 1, the copper strips of upper strata magnetic screen 2 is just being connected along screwed hole with lower clamping piece support plate 1, then in upper strata magnetic screen 2, cover secondary shielding plate 6, at the gap location of upper strata magnetic screen 2 and the gap location of lower floor's magnetic screen 3, put into pole to fill afterwards.Before final online snare dress, installing insulating cushion block on lower clamping piece support plate 1.
Feature of the present utility model is: the temperature rise that 1) has guaranteed lower clamping piece support plate 1 by unique structure is in allowed band; 2) temperature rise of lower clamping piece support plate 1 is significantly reduced, saved production cost; 3) practical reliable, simple in structure, easy for installation.
Claims (4)
1. the assembly structure that magnetic screen is installed on the folder of high-power transformer, it is characterized in that, comprise upper strata magnetic screen (2), lower floor's magnetic screen (3), the first barricade (5), secondary shielding plate (6), lower clamping piece support plate (1) and offer the fluting cushion block (4) of groove, the upper surface of described lower clamping piece support plate (1) offers groove, in the groove of described lower clamping piece support plate (1) upper surface, offer porose, groove on described fluting cushion block (4) is concordant with the notch of groove on described lower clamping piece support plate (1), described lower floor magnetic screen (3), the first barricade (5), upper strata magnetic screen (2) and secondary shielding plate (6) are installed in the groove of described lower clamping piece support plate (1) and fluting cushion block (4) from bottom to top successively, described upper strata magnetic screen (2) is provided with described hole and is connected the copper strips with ground connection.
2. the assembly structure that magnetic screen is installed on the folder of high-power transformer according to claim 1, it is characterized in that, described upper strata magnetic screen (2) and lower floor's magnetic screen (3) are all offered porose, hole in described upper strata magnetic screen (2) and lower floor's magnetic screen (3) be located at hole on described lower clamping piece support plate (1) directly over, and described upper strata magnetic screen (2) is identical with the size in the hole on described lower clamping piece support plate (1) with the size in hole in lower floor's magnetic screen (3).
3. the assembly structure that magnetic screen is installed on the folder of high-power transformer according to claim 1, is characterized in that, described upper strata magnetic screen (2) and lower floor's magnetic screen (3) are provided with gap, and described gap location is filled with pole.
4. the assembly structure that magnetic screen is installed on the folder of high-power transformer according to claim 1, is characterized in that, between described lower clamping piece support plate (1) and the coil of described transformer, is provided with cross-over block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598778.8U CN203481022U (en) | 2013-09-26 | 2013-09-26 | Assembling structure for mounting magnetic screens on clamping piece of large capacity transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598778.8U CN203481022U (en) | 2013-09-26 | 2013-09-26 | Assembling structure for mounting magnetic screens on clamping piece of large capacity transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481022U true CN203481022U (en) | 2014-03-12 |
Family
ID=50229305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320598778.8U Expired - Lifetime CN203481022U (en) | 2013-09-26 | 2013-09-26 | Assembling structure for mounting magnetic screens on clamping piece of large capacity transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118611A (en) * | 2015-07-13 | 2015-12-02 | 国家电网公司 | Method for reducing partial heating of transformer shell |
-
2013
- 2013-09-26 CN CN201320598778.8U patent/CN203481022U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118611A (en) * | 2015-07-13 | 2015-12-02 | 国家电网公司 | Method for reducing partial heating of transformer shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |