CN2607221Y - Cold pressing copper tube and cold pressing mould for welding transformer lead wire - Google Patents
Cold pressing copper tube and cold pressing mould for welding transformer lead wire Download PDFInfo
- Publication number
- CN2607221Y CN2607221Y CN 03227171 CN03227171U CN2607221Y CN 2607221 Y CN2607221 Y CN 2607221Y CN 03227171 CN03227171 CN 03227171 CN 03227171 U CN03227171 U CN 03227171U CN 2607221 Y CN2607221 Y CN 2607221Y
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- cold pressing
- copper pipe
- transformer
- cold
- welding
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Abstract
The utility model relates to a technical field of transformer, which relates to a cold pressing copper pipe for the welding of lead wires of transformer and a cold pressing mould for welding the lead wires of transformer or winding coil out and the cold pressing copper pipe together in a cold pressing manner. The cold pressing copper pipe for the welding of the lead wires of transformer comprises a copper pipe body. At least two circular holes are arrayed in parallel in the middle of the copper pipe body, and the circular holes are provided with a chamfer angle at the outer wall of the cold pressing pipe, and the chamfer angle is smooth and in hemicycle. The two ends of the pipe body are also provided with chamfer angles which are smooth. The cold pressing mould for welding the lead wires of transformer or winding coil out and the cold pressing copper pipe together in a cold pressing manner comprises a die seat, a pressure head and an end of the pressure head. The whole taper of the pressure head decreases, and the end is in pellet or spheroidicity. The utility model is suitable for the cold extrusion welding of the splitting wires of the transformer with 110 kilovolts or above neutral point pressure regulator. The cold pressing joint self plays a shield effect of pressure point, which eliminates the smoothing of the aluminum foil padding and foil wrapper after cold pressing, and the wrapper of metal crinkled paper, thus saving a mass of man hours and materials and reducing the cost.
Description
Technical field
The utility model belongs to the transformer technology field, relate to a kind of transformer lead welding usefulness cold pressing copper pipe and with transformer lead or winding outlet with cold pressing the copper pipe Cold welding cold stamping die of usefulness together.
Background technology
Solution partial discharge problem is the key during transformer is made in transformer industry, and wire bonds has bigger influence to product quality, is the basic point that solves generation partial discharge in the lead-in wire manufacturing.Wire bonds be meant winding lift one's head and go between between welding or the welding between the winding outlet.At present, in the wire bonds of high-power transformer, just progressively promote the cold-extruded pressure welding.For the branch wiring of the transformer of 110kV and above neutral point pressure regulation, adopt cold welding all need adopt aluminium foil fill and the aluminium foil wrapping slick and sly, then with the half lap one deck wrapping inwardly of metallization crimped paper metal covering.Its objective is to make the position slyness of colding pressing, no wedge angle, thereby reduce to cold pressing position wire surface local field strength, reach the purpose that reduces partial discharge or do not have partial discharge.Its weak point is: 1. the copper pipe of colding pressing will pass through whole electric currents of lead-in wire, and the slotted eye of the existing middle and axial vertical direction of copper pipe of colding pressing can make the current density of the joint part of colding pressing improve; The effect of copper pipe of colding pressing is that winding outlet and lead-in wire are coupled together by the cold-stamped mode, shown in prior art connection diagram (Fig. 5): there is slotted eye perpendicular to axial direction the centre of the copper pipe of colding pressing, fill in winding outlet and lead-in wire respectively from the two ends of the copper pipe of colding pressing, then cold stamping die is contained on the hydraulic tool, carry out cold extrusion, can on the copper pipe of colding pressing, squeeze out two pits, make winding outlet and lead-in wire that plastic deformation take place, thereby link together.Cold stamping die is to be used for instrument that cold pressing copper pipe and winding outlet, lead-in wire are connected together by extruding.Cold stamping die is mounted on the hydraulic tool of outsourcing, by hydraulic pump cold stamping die is advanced, and contacts the copper pipe of colding pressing, and squeezes out load mould until the copper pipe of will colding pressing, and winding outlet and lead-in wire are linked together.2. punching is in the bottom of load mould, causes after the cold extrusion gas in the joint of colding pressing to discharge; 3. because the pressure head end of cold stamping die is that the convex-concave shape is quincunx, and pressure head integral body is tapered, cold stamping die adopts pressure point to connect, and is big with the bottom burr around the load mould, corner angle are many, and electric field is easily concentrated, and easily produces partial discharge; 4. must shield, not handle because the copper pipe of colding pressing carries out corners, cold stamping die pressure head end is rough and uneven in surface, cause cold pressing after, the wedge angle burr is arranged at the load mould bottom of colding pressing on the copper pipe, so will shield time-consuming and waste material with aluminium foil and metallization crimped paper.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned weak point of the prior art, provides a kind of new transformer lead to weld the cold pressing copper pipe and the cold stamping die of usefulness, improves cold pressing copper pipe structure, pressure point shape, to address the above problem.
The technical scheme that solution the utility model technical problem is adopted is that the copper pipe of colding pressing of this transformer lead welding usefulness comprises the copper pipe body, the middle part of copper pipe body has side by side and is no less than 2 circular holes, and circular hole has chamfering at the pipe outer wall section of colding pressing, and the smooth semicircular in shape of chamfering, body two ends also chamfering are smooth.At the bottom of the cold stamping die of usefulness comprises mould together with the copper pipe Cold welding of colding pressing with transformer lead or winding outlet, pressure head, pressure head end, the whole tapering of pressure head reduces, the end is ball or elliposoidal.
Divide during wiring makes for the transformer of 110kV and above neutral point pressure regulation, adopt the copper pipe of colding pressing of the present utility model, cold stamping die, joint itself plays the shielding action of pressure point owing to cold pressing, so cancelled the slick and sly and crimped paper metal covering half lap wrapping inwardly etc. of metallizing of aluminium foil filling, aluminium foil wrapping after colding pressing.Thereby saved a large amount of man-hours and raw material, reached the purpose that reduces cost.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail.
Fig. 1 is the front view of original copper pipe of colding pressing
Fig. 2 is the vertical view of Fig. 1
Fig. 3 is the front view of original cold stamping die
Fig. 4 is the vertical view of Fig. 3
The schematic diagram of Fig. 5 for going between and be connected with the copper pipe of colding pressing in the prior art with the winding outlet
Fig. 6 is the cold pressing front view of copper pipe of the utility model
Fig. 7 is the vertical view of Fig. 6
Fig. 8 is the front view of the utility model cold stamping die
Fig. 9 is the vertical view of Fig. 8
Among the figure: 1-lead-in wire 2-winding outlet 3-colds pressing copper pipe 4-load mould bottom 5-and axial vertical slotted eye 6-copper pipe body 7-circular hole 8-at the bottom of the 12-mould of 11-elliposoidal pressure head end, 9-pressure head 10-pressure head end, angle
Embodiment
Have in the middle of original copper pipe of colding pressing (3) one with axial vertical slotted eye (5).The cold pressing middle part of copper pipe (3) of the utility model has side by side and is no less than 2 circular holes (7), is 3 circular holes in the present embodiment, and circular hole (7) is chamfering (8) at the copper pipe of colding pressing (3) outer wall section, the smooth semicircular in shape of chamfering (8), and two ends also chamfering are smooth.The inspection opening that circular hole (7) stretches into as lead-in wire (1), the venthole of oil-feed in the pipe when also being the product vacuum oil simultaneously, gas drains in guaranteeing to manage.
The pressure head end (10) of original cold stamping die is that the convex-concave shape is quincunx, and pressure head (9) is whole tapered.And the mould after improving reduces the whole tapering of pressure head (9), and pressure head end (10) are ball or elliposoidal.The copper pipe of colding pressing (3) with this mould compacting is pushing the smooth no corner angle burr in position, and copper pipe surface does not have obvious pull and stretch phenomenon.Use the cold pressing lead-in wire of copper pipe (3) and cold stamping die moulding of the utility model to be connected,, itself just play and dam and shielding action owing to colding pressing copper pipe (3) and push all smooth no corner angle in position.Cold pressing copper pipe (3) and load mould, circular hole (7) all handled, itself has reached the requirement of former shielding, need not shield again, cold pressing joint and mould after improving, with the joint of colding pressing (pipe) shielding itself, replace original aluminium foil and the shielding of metallization crimped paper, reliable in quality, save raw material and man-hour, reduced product cost.
Claims (3)
1, the copper pipe of colding pressing of a kind of transformer lead welding usefulness comprises copper pipe body (6), and the middle part that it is characterized in that copper pipe body (6) has side by side and is no less than 2 circular holes (7).
2, the copper pipe of colding pressing of transformer lead welding usefulness according to claim 1 is characterized in that circular hole (7) has chamfering (8) at the pipe outer wall section of colding pressing, and the smooth semicircular in shape of chamfering (8), and body two ends also chamfering are smooth.
3, a kind of with transformer lead or winding outlet with cold pressing the copper pipe Cold welding cold stamping die of usefulness together, comprise (12), pressure head (9) at the bottom of the mould, pressure head end (10), it is characterized in that pressure head end (10) is ball or elliposoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227171 CN2607221Y (en) | 2003-03-19 | 2003-03-19 | Cold pressing copper tube and cold pressing mould for welding transformer lead wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227171 CN2607221Y (en) | 2003-03-19 | 2003-03-19 | Cold pressing copper tube and cold pressing mould for welding transformer lead wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2607221Y true CN2607221Y (en) | 2004-03-24 |
Family
ID=34163978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03227171 Expired - Fee Related CN2607221Y (en) | 2003-03-19 | 2003-03-19 | Cold pressing copper tube and cold pressing mould for welding transformer lead wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2607221Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489866A (en) * | 2011-12-09 | 2012-06-13 | 山东中大电力设备有限公司 | Cold pressure welding process for copper and aluminum |
| CN102789879A (en) * | 2012-08-03 | 2012-11-21 | 河南省电力公司洛阳供电公司 | Transformer tapping connecting structure |
| CN103447706A (en) * | 2013-07-31 | 2013-12-18 | 东方电气集团东风电机有限公司 | Process for welding neutral points with leads of windings of driving motors of electric vehicles |
| CN105097271A (en) * | 2015-08-21 | 2015-11-25 | 宁波奥克斯高科技有限公司 | Semi-automatic cold weld pincers and assembly method for applying same to transformer lead |
| CN105118664A (en) * | 2015-09-06 | 2015-12-02 | 深圳市京泉华科技股份有限公司 | Welding method and system of winding and lead wire for foil winding transformer, and cold press |
| CN110508724A (en) * | 2019-07-09 | 2019-11-29 | 浙江海亮股份有限公司 | Tin cold compaction process in a kind of copper pipe |
-
2003
- 2003-03-19 CN CN 03227171 patent/CN2607221Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489866A (en) * | 2011-12-09 | 2012-06-13 | 山东中大电力设备有限公司 | Cold pressure welding process for copper and aluminum |
| CN102789879A (en) * | 2012-08-03 | 2012-11-21 | 河南省电力公司洛阳供电公司 | Transformer tapping connecting structure |
| CN103447706A (en) * | 2013-07-31 | 2013-12-18 | 东方电气集团东风电机有限公司 | Process for welding neutral points with leads of windings of driving motors of electric vehicles |
| CN105097271A (en) * | 2015-08-21 | 2015-11-25 | 宁波奥克斯高科技有限公司 | Semi-automatic cold weld pincers and assembly method for applying same to transformer lead |
| CN105097271B (en) * | 2015-08-21 | 2017-01-25 | 宁波奥克斯高科技有限公司 | Semi-automatic cold weld pincers and assembly method for applying same to transformer lead |
| CN105118664A (en) * | 2015-09-06 | 2015-12-02 | 深圳市京泉华科技股份有限公司 | Welding method and system of winding and lead wire for foil winding transformer, and cold press |
| CN105118664B (en) * | 2015-09-06 | 2017-03-29 | 深圳市京泉华科技股份有限公司 | The winding of foil type winding transformer and the welding method of lead, system and cold press |
| CN110508724A (en) * | 2019-07-09 | 2019-11-29 | 浙江海亮股份有限公司 | Tin cold compaction process in a kind of copper pipe |
| CN110508724B (en) * | 2019-07-09 | 2020-11-10 | 浙江海亮股份有限公司 | Cold pressing method for tin in copper pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TEBIAN ELECTRIC APPARATUS STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: XINJIANG TBEA ELECTRICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Tebian Electrician Co., Ltd. Patentee before: Tebian Electrotechnical Co., Ltd., Xinjiang |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |