CN204732292U - A kind of lead link structure for voltage levels transformer - Google Patents
A kind of lead link structure for voltage levels transformer Download PDFInfo
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- CN204732292U CN204732292U CN201520420810.2U CN201520420810U CN204732292U CN 204732292 U CN204732292 U CN 204732292U CN 201520420810 U CN201520420810 U CN 201520420810U CN 204732292 U CN204732292 U CN 204732292U
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- lead
- voltage levels
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Abstract
The utility model discloses a kind of lead link structure for voltage levels transformer, relates to technical field of transformer manufacturing.This lead link structure comprises the former line of coil and copper pipe lead-in wire, and the end that end and the copper pipe of the former line of coil go between directly overlaps welds, formation connecting portion; The outer surface of the former line of the outer surface of this connecting portion, coil is all enclosed with the first wrinkle ply of paper, and the outer surface of the first wrinkle ply of paper is enclosed with aluminium foil wrinkle ply of paper; The outer surface of aluminium foil wrinkle ply of paper, the outer surface of copper pipe lead-in wire are all enclosed with the second wrinkle ply of paper.The utility model not only structure simple, be connected firmly, Electric Field Distribution is even, and production cost is low, economic and practical.
Description
Technical field
The utility model relates to technical field of transformer manufacturing, is specifically a kind of lead link structure for voltage levels transformer.
Background technology
In the manufacture process of transformer, lead-in wire connection operation belongs to the important step in transformer assembling, the quality of this operation directly affects the product quality of transformer, and particularly for voltage levels (220Kv, 330Kv) transformer, the quality of connection of lead-in wire seems particularly important.
At present, the lead-in wire of transformer connects generally employing cold extrusion welding procedure.As shown in Figure 1, when adopting this technique to carry out lead-in wire connection, first to go between 2 at the former line 1 of coil and copper pipe and pressure joint 3, bolt 4 and cold extruded joint 5 are installed; Former for coil line 1 and copper pipe are gone between and 2 to be connected by the mode of then being welded by cold extrusion.
Although the lead-in wire that cold extrusion Welder artistic skill realizes general transformer connects, when the lead-in wire carrying out voltage levels transformer connects, still there is following defect:
(1) the Winding tap wire gauge due to voltage levels transformer is widely different, its longitudinal section changes with product difference, therefore, need cold extruded joint 5, the supporting installation of pressure joint 3 of buying various kind and specification in production process, thus cause production cost to increase;
(2) when adopting cold extrusion welding manner to connect, because the electrode shape of crimping section is bad, right angle wedge angle is too much, can cause the non-uniform electric that copper pipe goes between around 2, easily creepagely punctures;
(3) the crimping poor reliability of cold extrusion welding, copper pipe lead-in wire 2 is very easily deviate from from cold extruded joint 5.
Utility model content
For the defect existed in prior art, the purpose of this utility model is to provide a kind of lead link structure for voltage levels transformer, not only structure simple, be connected firmly, Electric Field Distribution is even, and production cost is low, economic and practical.
For reaching above object, the technical scheme that the utility model is taked is: provide a kind of lead link structure for voltage levels transformer, comprise the former line of coil and copper pipe lead-in wire, the end that end and the copper pipe of the former line of coil go between directly overlaps welds, formation connecting portion; The outer surface of the former line of the outer surface of this connecting portion, coil is all enclosed with the first wrinkle ply of paper, and the outer surface of the first wrinkle ply of paper is enclosed with aluminium foil wrinkle ply of paper; The outer surface of aluminium foil wrinkle ply of paper, the outer surface of copper pipe lead-in wire are all enclosed with the second wrinkle ply of paper.
On the basis of technique scheme, described first wrinkle ply of paper welds between end with the overlap joint of the former line of coil, described first wrinkle ply of paper welds between end with the overlap joint that copper pipe goes between and is equipped with void filler, and the contact-making surface of described void filler and the first wrinkle ply of paper is inclined-plane.
On the basis of technique scheme, the angle of described inclined-plane and horizontal plane is 10 ° ~ 40 °.
On the basis of technique scheme, described void filler selects crimped paper.
On the basis of technique scheme, described first wrinkle ply of paper is one deck crimped paper.
On the basis of technique scheme, described second wrinkle ply of paper is multilayer crimped paper.
On the basis of technique scheme, the aluminium foil surface of described aluminium foil wrinkle ply of paper is towards the former line of coil.
On the basis of technique scheme, the length of described connecting portion is 80mm.
On the basis of technique scheme, the thickness of described second wrinkle ply of paper is 30mm.
The beneficial effects of the utility model are:
1., in the utility model, the end that the end of former for coil line and copper pipe go between directly overlaps by the mode adopting hot weld to connect welds.Come compared with the former line of connecting coil goes between with copper pipe with adopting cold extrusion welding manner in prior art, the utility model is without the need to buying and use the accessory such as cold extruded joint, pressure joint of various kind, specification, not only simplify the course of processing, and greatly reduce production cost; In addition, the former line of coil and copper pipe go between directly to overlap and weld, and make connection more solid and reliable.
2., in the utility model, owing to not using cold extrusion to weld, do not use cold extruded joint, pressure joint yet, the electrode shape that therefore can not produce because of crimping section is bad, right angle wedge angle is too much, causes copper pipe lead-in wire non-uniform electric around, the easily creepage problem punctured.
3. in the utility model, the first wrinkle ply of paper welds between end with the overlap joint of the former line of coil, the first wrinkle ply of paper welds between end with the overlap joint that copper pipe goes between and is equipped with void filler, and the contact-making surface of void filler and the first wrinkle ply of paper is inclined-plane.Right angle pointed part in this structure can change into by inclined-plane excessive by this inclined design, further ensures copper pipe lead-in wire electric field around and is balanced electric field, can not form insulation weak spot, avoid the creepage generation punctured.
4. in the utility model, the outermost layer of this structure is enclosed with the second wrinkle ply of paper, and the thickness of this two wrinkles ply of paper is 30mm, not only can meet the insulation thickness requirement of lead-in wire, and insulation effect is good.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing lead link structure in background technology;
Fig. 2 is the schematic diagram for the lead link structure of voltage levels transformer in the utility model embodiment.
Reference numeral: the former line of 1-coil; 2-copper pipe goes between; 3-pressure joint; 4-bolt; 5-cold extruded joint; 6-void filler; 7-first wrinkle ply of paper; 8-aluminium foil wrinkle ply of paper; 9-second wrinkle ply of paper.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Shown in Figure 2, the utility model embodiment provides a kind of lead link structure for voltage levels transformer, comprise the former line 1 of coil and copper pipe lead-in wire 2, end and the copper pipe of the former line 1 of coil go between 2 end directly overlap and weld (employing hot weld), formation connecting portion; The outer surface of the former line 1 of the outer surface of this connecting portion, coil is all enclosed with the first wrinkle ply of paper 7 for built-in electrical insulation, and this first wrinkle ply of paper 7 is one deck crimped paper; The outer surface of the first wrinkle ply of paper 7 is enclosed with the aluminium foil wrinkle ply of paper 8 for shielding, and the aluminium foil surface of this aluminium foil wrinkle ply of paper 8 is towards the former line 1 of coil; The outer surface of aluminium foil wrinkle ply of paper 8, the outer surface of copper pipe lead-in wire 2 are all enclosed with the second wrinkle ply of paper 9 for exterior insulation, and this second wrinkle ply of paper 9 is multilayer crimped paper.
Shown in Figure 2, in order to reduce the right angle wedge angle in syndeton as much as possible, ensure that the Electric Field Distribution around copper pipe lead-in wire 2 is even, avoid the creepage generation punctured, weld between end at the overlap joint of the former line 1 of the first wrinkle ply of paper 7 and coil, first wrinkle ply of paper 7 and copper pipe go between 2 overlap joint weld between end and be equipped with void filler 6, the contact-making surface of this void filler 6 and the first wrinkle ply of paper 7 is inclined-plane, the angle of this inclined-plane and horizontal plane is 10 ° ~ 40 °, can the right angle wedge angle at joins place all be changed into by inclined-plane excessive, the electric field around copper pipe lead-in wire 2 is made to be balanced electric field, insulation weak spot can not be formed.
In the present embodiment, void filler 6 is preferably crimped paper, to be not only commonly easy to get, cost is low, and good insulating, economic and practical; The length of connecting portion is 80mm, makes the firm and reliable connection that the former line 1 of coil and copper pipe go between 2; And the thickness of the second wrinkle ply of paper 9 is 30mm, the insulation thickness requirement of lead-in wire can be met.
The specific operation process of carrying out lead-in wire connection based on the utility model syndeton is as follows:
S1: by the paint film outwash of former for coil line 1, and by its surperficial filing; By clean for the surface cleaning of copper pipe lead-in wire 2;
S2: utilize flame welding procedure (hot weld), the end of former for coil line 1 and copper pipe are gone between 2 end directly overlap and weld 80mm, form connecting portion, and the weld of connecting portion polished; (need to carry out in welding process near the insulation protection process of lead-in wire);
S3: at the overlap joint welding end filling void filler 6 of the overlap joint welding end of the former line 1 of coil, copper pipe lead-in wire 2; The first wrinkle ply of paper 7 (during parcel, evened up on the surface of crimped paper as far as possible, and wrap up consolidation) is wrapped up at the outer surface of connecting portion, the outer surface of the former line 1 of coil;
S4: wrap up one deck aluminium foil wrinkle ply of paper 8 (during parcel at the outer surface of the first wrinkle ply of paper 7, even up wrapping, and the aluminium foil surface of aluminium foil wrinkle ply of paper 8 is inside, namely towards the former line 1 of coil, after having wrapped up, require that the surfacing of aluminium foil wrinkle ply of paper 8 is round and smooth, fold and projection must not be had);
S5: last, wraps up the second thick wrinkle ply of paper 9 of 30mm at the outer surface of aluminium foil wrinkle ply of paper 8, the outer surface of copper pipe lead-in wire 2.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the utility model or akin technical scheme, all within its protection range.
Claims (9)
1. the lead link structure for voltage levels transformer, comprise the former line of coil (1) and copper pipe lead-in wire (2), it is characterized in that: go between with the copper pipe end of (2), the end of the former line of described coil (1) directly overlaps and welds, and forms connecting portion; The outer surface of the former line of the outer surface of described connecting portion, coil (1) is all enclosed with the first wrinkle ply of paper (7), and the outer surface of the first wrinkle ply of paper (7) is enclosed with aluminium foil wrinkle ply of paper (8); The outer surface of aluminium foil wrinkle ply of paper (8), the outer surface of copper pipe lead-in wire (2) are all enclosed with the second wrinkle ply of paper (9).
2. as claimed in claim 1 for the lead link structure of voltage levels transformer, it is characterized in that: the overlap joint that described first wrinkle ply of paper (7) welds between end with the overlap joint of the former line of coil (1), described first wrinkle ply of paper (7) goes between with copper pipe (2) welds between end and is equipped with void filler (6), described void filler (6) is inclined-plane with the contact-making surface of the first wrinkle ply of paper (7).
3., as claimed in claim 2 for the lead link structure of voltage levels transformer, it is characterized in that: the angle of described inclined-plane and horizontal plane is 10 ° ~ 40 °.
4., as claimed in claim 2 for the lead link structure of voltage levels transformer, it is characterized in that: described void filler (6) selects crimped paper.
5., as claimed in claim 1 for the lead link structure of voltage levels transformer, it is characterized in that: described first wrinkle ply of paper (7) is one deck crimped paper.
6., as claimed in claim 1 for the lead link structure of voltage levels transformer, it is characterized in that: described second wrinkle ply of paper (9) is multilayer crimped paper.
7., as claimed in claim 1 for the lead link structure of voltage levels transformer, it is characterized in that: the aluminium foil surface of described aluminium foil wrinkle ply of paper (8) is towards the former line of coil (1).
8. the lead link structure for voltage levels transformer as described in any one of claim 1 to 7, is characterized in that: the length of described connecting portion is 80mm.
9. the lead link structure for voltage levels transformer as described in any one of claim 1 to 7, is characterized in that: the thickness of described second wrinkle ply of paper (9) is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420810.2U CN204732292U (en) | 2015-06-17 | 2015-06-17 | A kind of lead link structure for voltage levels transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420810.2U CN204732292U (en) | 2015-06-17 | 2015-06-17 | A kind of lead link structure for voltage levels transformer |
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| Publication Number | Publication Date |
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| CN204732292U true CN204732292U (en) | 2015-10-28 |
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| CN201520420810.2U Active CN204732292U (en) | 2015-06-17 | 2015-06-17 | A kind of lead link structure for voltage levels transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531411A (en) * | 2016-10-12 | 2017-03-22 | 武汉泰普变压器开关有限公司 | Electric shielding structure of connected part of tap switch contact of transformer and lead |
| CN108469056A (en) * | 2018-06-04 | 2018-08-31 | 石家庄格力电器小家电有限公司 | Halide torch lead-out wire insulating fixing structure and halide torch electric heater |
| CN112992499A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Three-phase integrated autotransformer low-voltage copper pipe lead structure and method |
-
2015
- 2015-06-17 CN CN201520420810.2U patent/CN204732292U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531411A (en) * | 2016-10-12 | 2017-03-22 | 武汉泰普变压器开关有限公司 | Electric shielding structure of connected part of tap switch contact of transformer and lead |
| CN108469056A (en) * | 2018-06-04 | 2018-08-31 | 石家庄格力电器小家电有限公司 | Halide torch lead-out wire insulating fixing structure and halide torch electric heater |
| CN112992499A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Three-phase integrated autotransformer low-voltage copper pipe lead structure and method |
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