CN218241493U - Boss cover plate for dry-type transformer - Google Patents
Boss cover plate for dry-type transformer Download PDFInfo
- Publication number
- CN218241493U CN218241493U CN202222136859.8U CN202222136859U CN218241493U CN 218241493 U CN218241493 U CN 218241493U CN 202222136859 U CN202222136859 U CN 202222136859U CN 218241493 U CN218241493 U CN 218241493U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- transformer
- dry
- boss
- terminal hole
- 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.)
- Active
Links
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a boss cover plate for a dry-type transformer, which comprises an outer mold, wherein a cavity is arranged inside the outer mold, a winding former is arranged inside the cavity, the winding former comprises a winding main body, and the upper end and the lower end of the winding main body are both connected with cover plates of which the outer walls are abutted with the inner wall of the cavity; the side wall of the outer die is provided with mounting ports for mounting boss cover plates with different surface specifications from top to bottom, the dry-type transformer manufactured by the device has the outer wall difference from the traditional dry-type transformer, the outer wall of the transformer is provided with a pouring groove corresponding to the groove on the boss cover plate, the creepage distance from the main inlet and outlet terminals A/X of the transformer to metal pieces such as a transformer core and a pressing cushion block and the creepage distance from the main inlet and outlet terminals A/X of the transformer to tapping regions of the transformer to the tapping terminals are increased, the requirements of high requirements of the transformer on-site use environment or high pollution grade are met, the experimental requirements of the insulation level of the transformer under special environment are met, the product is more generalized, and the application range is expanded.
Description
Technical Field
The utility model relates to a boss apron for dry-type transformer.
Background
The boss cover plate for the high-voltage cast coil of the dry-type transformer usually comprises a bent plate and a binding post die sleeve, wherein the front surface of the bent plate can be provided with a main wire inlet end A, a main wire outlet end X and a tapping binding post hole in a middle tapping area according to the conventional technical requirements of the transformer during the previous design, and the binding post die sleeve is additionally welded at the upper main wire inlet binding post A and the lower main wire outlet binding post A and the main wire outlet terminal X hole.
According to the electromagnetic calculation of the transformer, the height of the boss cover plate for the high-pressure casting coil is equal to that of the transformer coil, and the product generalization is realized through the conventional design of the boss cover plate;
however, for special customers or places with high requirements on the field use environment of the transformer and high pollution levels, the creepage distance from the main inlet terminal A and the main outlet terminal X of the transformer to metal pieces such as a transformer core and a pressing cushion block and the creepage distance from the main inlet terminal A/X of the transformer to the tapping area tapping terminals of the transformer, if redesign is selected to increase the distance from the main inlet terminal A and the main outlet terminal X of the transformer to main insulation end faces such as the core, the cost of the transformer is increased, a coil mold and the like need redesign and purchase, and the cost of the mold is increased, and the purchase period is long, time-consuming, labor-consuming and uneconomical; how to manufacture a transformer with larger creepage distance under the condition of not changing the structure and the size of the original transformer and the structure and the size of a mould, and meeting the requirement of a transformer with higher pollution level becomes one of the problems which need to be solved urgently.
In view of above-mentioned shortcoming, the utility model discloses to current high pressure casting boss apron for coil improve in research.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art, and providing a boss cover plate for a dry type transformer.
A boss cover plate for a dry-type transformer comprises an outer die, wherein a cavity is arranged inside the outer die, a winding former is arranged inside the cavity, the winding former comprises a winding main body, and the upper end and the lower end of the winding main body are both connected with cover plates of which the outer side walls are abutted to the inner wall of the cavity; and the side wall of the outer die is provided with a mounting opening for mounting boss cover plates with different surface specifications from top to bottom.
As a further improvement, the surface of the boss cover plate is divided into two specifications, one is a plane cover plate, the other is a groove cover plate milled based on the plane cover plate, and the surfaces of the groove cover plate and the plane cover plate are respectively provided with an upper main wiring terminal hole, a branch wiring terminal hole and a lower wiring terminal hole from top to bottom in sequence;
the utility model discloses a transformer, including recess apron, upper end and upper main wiring terminal hole, go up between main wiring terminal hole and the branching terminal hole, have milled a plurality of recess between branching terminal hole and the lower wiring terminal hole and between the lower extreme of lower wiring terminal hole and boss apron, the whole weight has been alleviateed after recess apron surface milling a plurality of recess, realize whole external mold lightweight purpose, the transformer of making not only can be need not to change length, the creep distance has been increased under the condition of width and main structural design, when the bigger transformer of creep distance is made to needs, need not to change the overall structure of external mold, only need to use the recess apron that only differs with plane cover plate surface specification to change just can realize, need not to redesign the mould because of increasing the creep distance, and is easy to operate, and is convenient, and saves production cost.
As a further improvement, the distance between adjacent grooves is the same, a plurality of grooves with the same depth and width are milled on the surface of the boss cover plate, and the creepage distance between each outgoing line terminal of the transformer manufactured by the outer die is prolonged by replacing the groove cover plate under the condition of not changing the specification of the outer die, so that the insulation level experiment requirement under the special environment is met, and the application range is expanded.
As a further improvement, the outer die ports on two sides of the mounting opening are bent outwards to form folded edges.
As further improvement, the hems are detachably locked and connected with the two sides of the boss cover plate through bolts, so that the connection strength of the boss cover plate and the winding former is ensured, and meanwhile, demolding, dismounting and replacement are facilitated.
As a further improvement, the cover plate is abutted against the inner wall of the cavity to form a closed and sealed pouring cavity, so that the pouring quality is ensured.
Has the beneficial effects that:
this device has two kinds of pouring modes, one kind is for utilizing the plane apron to pour into a mould, the transformer after the pouring does not take the pouring recess, the transformer that this kind of mode was made is applicable to the demand under the normal environment, after the transformer environment changes, change the plane apron into the recess apron that mills on the plane apron basis, the transformer that this kind of mode was made has the pouring recess, need not to redesign the casting mould according to the demand, at the condition that does not change external mold length, the creep distance of transformer has been increased under the circumstances of size such as diameter, also need not to change the structure of transformer simultaneously, and guarantee not increase the use under the condition that increases the creep distance, area, save production manufacturing cost.
The outer insulation pollution grade of the transformer is 1-5, the creep distance of the transformer is increased after pouring by replacing the cover plate, and after the pouring groove is added, the creep distance parameter of the transformer exceeds the specified standard of the creep distance value of the transformer with the outer insulation pollution grade of 5.
The outer wall difference of the dry-type transformer that this device was made and traditional dry-type transformer have on the outer wall of transformer itself with the corresponding pouring recess of boss apron upper groove, the effect of pouring recess does: the creepage distance from the main lead-in and lead-out terminals A/X of the transformer to metal pieces such as a transformer core and a compression cushion block and the creepage distance from the main lead-in and lead-out terminals A/X of the transformer to tapping regions of the main lead-in and lead-out terminals A/X of the transformer to tapping terminals of the main lead-in and lead-out terminals A/X of the transformer are increased, the requirements of the transformer on-site use environment in places with higher requirements or higher pollution levels are met, the requirements of the transformer insulation level experiment in special environments are met, products are more generalized, and the application range is enlarged.
This device need not to change the preparation mould and the transformer itself of transformer under the special environment that needs increase the creep distance, only need utilize the recess on the boss apron just can realize increasing the purpose of creep distance, need not to redesign the mould because of increasing the creep distance, easy operation, convenient, practiced thrift manufacturing cost, in addition, mill the recess on the boss apron and can alleviate whole weight, realize the light-weighted purpose of whole external mold.
The pouring recess on transformer surface that this device made still has horizontal and fore-and-aft cushioning effect, play certain shock attenuation and buffering effect when the transformer receives external impact, have the cushioning effect, when needs carry out the transformer transportation, better positioning action can be realized to the pouring recess on surface, make putting of transformer more firm in the transportation, be difficult for rocking, guarantee the security in the transformer transportation, in addition, the pouring recess has still increased heat radiating area, better radiating effect has been played.
Drawings
FIG. 1 is a first perspective view of a boss cover plate;
FIG. 2 is a schematic view of the general structure of a boss cover plate;
1. the terminal cover plate 11, the upper main wiring terminal hole 12, the tapping terminal hole 13, the lower wiring terminal hole 2 and the groove.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
As shown in fig. 1 to 2, a boss cover plate for a dry type transformer according to an embodiment of the present invention includes a boss cover plate 1, an upper main terminal hole 11, a tapping terminal hole 12, a lower terminal hole 13, and a groove 2.
A boss cover plate for a dry-type transformer comprises an outer die, wherein a cavity is arranged inside the outer die, a winding former is arranged inside the cavity, the winding former comprises a winding main body, and the upper end and the lower end of the winding main body are both connected with cover plates of which the outer side walls are abutted to the inner wall of the cavity; and the side wall of the outer die is provided with a mounting opening for mounting the boss cover plate 1 with different surface specifications from top to bottom.
The surface of the boss cover plate 1 is divided into two specifications, one is a plane cover plate, the other is a groove cover plate milled based on the plane cover plate, and the surfaces of the groove cover plate and the plane cover plate are sequentially provided with an upper main wiring terminal hole 11, a branching wiring terminal hole 12 and a lower wiring terminal hole 13 from top to bottom;
the upper end of the groove cover plate and the upper main wiring terminal hole 11, a plurality of grooves 2 are milled between the upper main wiring terminal hole 11 and the tapping terminal hole 12, between the tapping terminal hole 12 and the lower wiring terminal hole 13 and between the lower wiring terminal hole 13 and the lower end of the boss cover plate 1, the whole weight is reduced after the grooves 2 are milled on the surface of the groove cover plate, the purpose of lightening the whole outer die is achieved, the manufactured transformer can not only increase the creep distance under the condition of not changing the length, the width and the main structure design, when the transformer with larger creep distance is required to be manufactured, the whole structure of the outer die is not required to be changed, only the groove 2 cover plate which is only different from the surface specification of the plane cover plate is required to be changed, the die is not required to be redesigned due to the increase of the creep distance, the operation is simple and convenient, and the production cost is saved.
The distance between the adjacent grooves 2 is the same, a plurality of grooves 2 with the same depth and width are milled on the surface of the boss cover plate 1, and under the condition that the specification of an external mold is not required to be changed, the creep distance between the outgoing line terminals of the transformer manufactured by the external mold is prolonged by replacing the groove cover plate, so that the insulation level experiment requirement under a special environment is met, and the application range is expanded.
The outer die port department of installing port both sides all outwards buckles and forms the hem, and the hem passes through the bolt can be dismantled the locking with the both sides of boss apron 1 and links to each other, guarantees the joint strength of boss apron 1 and winding former, simultaneously, is convenient for drawing of patterns, dismouting, change.
The cover plate is abutted against the inner wall of the cavity to form a closed and sealed pouring cavity, so that the pouring quality is ensured.
When the transformer is used, high-voltage coil winding is firstly carried out on a winding die to form a coil winding semi-finished product, then the coil winding semi-finished product is installed in a cavity in an outer die, when a transformer with large creepage distance is required to be manufactured, a plane cover plate on an installation opening is replaced by a groove cover plate, after the coil winding semi-finished product is installed, the inner wall of the cavity is in close sealing butt joint with the outer side wall of the cover plate, and a closed sealing pouring cavity is formed with the outer die, pouring glue is injected into the pouring cavity, the transformer is formed after molding, pouring grooves corresponding to the grooves are formed in the surface of the transformer, and the pouring grooves are arranged in an equidistant array, so that the purpose of increasing the creepage distance from a main inlet terminal A/X of the transformer to metal parts such as a transformer core and a pressing cushion block and the creepage distance from a main inlet terminal A/X of the transformer to a tapping terminal A/X of the transformer to the tapping terminal is achieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The boss cover plate for the dry-type transformer is characterized by comprising an outer die, wherein a cavity is arranged inside the outer die, a winding former is arranged inside the cavity and comprises a winding main body, and the upper end and the lower end of the winding main body are both connected with cover plates of which the outer side walls are abutted against the inner wall of the cavity; and the side wall of the outer die is provided with a mounting opening for mounting boss cover plates with different surface specifications from top to bottom.
2. The boss cover plate for the dry-type transformer according to claim 1, wherein the surface of the boss cover plate is divided into two specifications, one is a plane cover plate, the other is a groove cover plate milled based on the plane cover plate, and the surfaces of the groove cover plate and the plane cover plate are respectively provided with an upper main wiring terminal hole, a branch wiring terminal hole and a lower wiring terminal hole from top to bottom in sequence;
the groove cover plate is characterized in that a plurality of grooves are milled between the upper end of the groove cover plate and the upper main wiring terminal hole, between the upper main wiring terminal hole and the tapping wire terminal hole, between the tapping wire terminal hole and the lower wiring terminal hole, and between the lower wiring terminal hole and the lower end of the groove cover plate.
3. The boss cover plate for a dry type transformer as claimed in claim 1, wherein the pitches between the adjacent grooves are the same.
4. The boss cover plate for the dry-type transformer according to claim 1, wherein the outer mold ports on two sides of the installation opening are bent outwards to form folded edges.
5. The boss cover plate for the dry-type transformer as claimed in claim 4, wherein the flange is detachably and lockably connected to both sides of the boss cover plate by bolts.
6. The boss cover plate for a dry-type transformer according to claim 1, wherein the cover plate forms a closed and sealed casting cavity after abutting against the inner wall of the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222136859.8U CN218241493U (en) | 2022-08-15 | 2022-08-15 | Boss cover plate for dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222136859.8U CN218241493U (en) | 2022-08-15 | 2022-08-15 | Boss cover plate for dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218241493U true CN218241493U (en) | 2023-01-06 |
Family
ID=84681815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222136859.8U Active CN218241493U (en) | 2022-08-15 | 2022-08-15 | Boss cover plate for dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218241493U (en) |
-
2022
- 2022-08-15 CN CN202222136859.8U patent/CN218241493U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101183605B (en) | Convenience-for-transportation disorganized transportation transformer and transport case thereof | |
| CN102039379A (en) | Towing pin casting model box and towing pin casting process | |
| CN218241493U (en) | Boss cover plate for dry-type transformer | |
| CN105478667A (en) | Manufacturing method of water jacket type exhaust manifold casting sand mold | |
| CN102380581B (en) | Method for laminating multiple core assemblies of shell casting chaplet at intervals | |
| CN104028695B (en) | A kind of subsides chamber cavityless casting method | |
| CN208529367U (en) | A kind of sectional die and prefabricated overlapping wall body structure | |
| CN105642840A (en) | Detachable universal sand box for V-shaped rotator castings | |
| CN201313153Y (en) | Novel composite model of flange fitting | |
| CN211888890U (en) | Gravity casting mold for automobile aluminum alloy wheel | |
| CN104493102A (en) | Duplex multi-core-head sand core for preventing core lift | |
| CN209000745U (en) | A kind of nickel zinc material EPC form forming magnetic core mold | |
| CN103624217A (en) | Forming tool and forming method of lubricating oil chamber sand core of diesel engine front end box body | |
| CN203957242U (en) | A kind of wall-penetrating type current transformer casting mold | |
| CN210091894U (en) | Secondary outlet box sealing structure based on outdoor epoxy resin mutual inductor | |
| CN102945734B (en) | A kind of power transformer of modular combination | |
| CN208913095U (en) | One kind being used for corner fittings precoated sand arenaceous shell shell core die | |
| CN218983093U (en) | Sand saving sand box for open type castings | |
| CN218826649U (en) | Terminal plate mould for casting coil and casting coil | |
| CN216100017U (en) | Split type current transformer split casting iron core positioning die for standard motor train unit | |
| CN209388874U (en) | The mold of amorphous alloy dry-type transformer high-tension coil coiling casting | |
| CN205128863U (en) | Positioning mechanism of casting sand box | |
| CN215431451U (en) | Pit core assembly of metallurgical auxiliary tool type riser flange | |
| CN214920256U (en) | Pouring mould with adjustable height | |
| CN213997717U (en) | High-strength sand box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |