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A stamping die for the shell head of a high-voltage transformer

A technology of high-voltage transformers and stamping dies, which is applied in the manufacture of inductors/transformers/magnets, forming tools, manufacturing tools, etc., which can solve the problems of high temperature heat dissipation, low breakdown resistance and poor heat resistance of the die head and other problems, to achieve the effects of good pressure resistance and impact resistance, good head formability, and reasonable structural design

Active Publication Date: 2018-05-11
NINGBO RONGYU MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-voltage transformers are transformers suitable for converting large voltages into small voltages or large currents into small currents in 1kv to 220kv power systems for easy measurement, protection, and use. They are mainly used in AC circuits to monitor the operation of electrical equipment and For the control system, a head is provided on the high-voltage transformer shell to act as a seal. In the prior art, the head of the high-voltage transformer head molded by stamping is generally a spherical head, and the anti-breakdown pressure resistance is not high. It is not conducive to improving the performance of high-voltage transformers, and it is difficult to dissipate heat at high temperature during the die stamping process, and the heat resistance of the die head is not good, thereby reducing the service life of the die, the quality of the workpiece and the processing efficiency

Method used

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  • A stamping die for the shell head of a high-voltage transformer
  • A stamping die for the shell head of a high-voltage transformer
  • A stamping die for the shell head of a high-voltage transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The above stamping die for the head of a high-voltage transformer shell, wherein the preparation method of the heat-insulating coating is as follows:

[0047] (1) Take 21 parts by mass of nano-titanium dioxide, 12 parts of nano-tin oxide, 13 parts of nano-silicon dioxide, 6 parts of nano-zinc-aluminum oxide and 2 parts of nano-molybdenum trioxide in a ball mill, and control the speed at 1450r / min, ball mill for 2 hours, then add 8 parts of polyvinyl alcohol and 6 parts of polyvinyl pyrrolidone dispersant in turn, under the power of 560w microwave, control the stirring rate to 410r / min, the temperature is 180 ℃, and react for 3 hours to prepare the nanocomposite material ;

[0048](2) Take 17 parts of E51 bisphenol A epoxy resin and 13 parts of polypropylene by mass parts, add 4 parts of talcum powder, control the stirring rate at 145r / min, and the temperature at 150°C for 3 hours to prepare Obtain modified resin;

[0049] (3) Add 26 parts of nanocomposite materials a...

Embodiment 2

[0051] The above stamping die for the head of a high-voltage transformer shell, wherein the preparation method of the heat-insulating coating is as follows:

[0052] (1) Take 22 parts by mass of nano-titanium dioxide, 14 parts of nano-tin oxide, 11 parts of nano-silicon dioxide, 5 parts of nano-zinc-aluminum oxide and 3 parts of nano-molybdenum trioxide in a ball mill, and control the speed at 1300r / min, ball mill for 1 hour, then add 9 parts of polyvinyl alcohol and 8 parts of polyvinyl pyrrolidone dispersant in turn, under the power of 560w microwave, control the stirring rate to 350r / min, and the temperature is 210℃, react for 3 hours to prepare nanocomposites ;

[0053] (2) Take 15 parts of E51 bisphenol A epoxy resin and 10 parts of polypropylene by mass parts, add 3 parts of talcum powder, control the stirring rate at 135r / min, and the temperature at 160°C for 3 hours to prepare Obtain modified resin;

[0054] (3) Add 32 parts of nanocomposite materials and 18 parts o...

Embodiment 3

[0056] The above stamping die for the head of a high-voltage transformer shell, wherein the preparation method of the heat-insulating coating is as follows:

[0057] (1) Take 12 parts by mass of nano-titanium dioxide, 14 parts of nano-tin oxide, 8 parts of nano-silicon dioxide, 7 parts of nano-zinc-aluminum oxide and 3 parts of nano-molybdenum trioxide in a ball mill, and control the speed at 1500r / min, ball mill for 1 hour, then add 8 parts of polyvinyl alcohol and 10 parts of polyvinyl pyrrolidone dispersant in turn, under the power of 560w microwave, control the stirring rate to 350r / min, the temperature is 200 ℃, and react for 2 hours to prepare the nanocomposite material ;

[0058] (2) Take 20 parts of E51 bisphenol A epoxy resin and 13 parts of polypropylene by mass parts, add 5 parts of talcum powder, control the stirring rate at 160r / min, and the temperature at 150°C for 3 hours to prepare Obtain modified resin;

[0059] (3) Add 33 parts of nanocomposite materials a...

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Abstract

The invention relates to a high-voltage transformer shell end socket stamping die comprising a lower die holder, an upper die head, a die cover and a bolt. A cavity is formed in the lower die holder and is internally provided with a plurality of baffle plates; one side of the lower die holder is provided with a cooling water inlet, and the other side of the lower die holder is provided with a cooling water outlet; the top of the lower die holder is provided with a pressing groove and damping mechanisms; the side wall of the pressing groove sequentially comprises a first vertical face, a first inwards-concave face, an inclined face, a second outwards-convex face and a second vertical face from top to bottom; each damping mechanism comprises a guiding column, a pressing spring and a top plate; the upper die head comprises a die core, a guiding plate and a lifting shaft; a rotating gear, a first pull plate and a second pull plate are arranged outside the lifting shaft; and a self-aligning bearing disk is arranged between the lifting shaft and the guiding plate. By means of the high-voltage transformer shell end socket stamping die, the end socket forming performance is good, the service life of the die can be prolonged easily, and the anti-breakthrough pressure bearing performance, the quality stability and the machining efficiency of an end socket are high.

Description

technical field [0001] The invention relates to a high-voltage transformer shell head stamping die, which belongs to the technical field of high-performance parts manufacturing. Background technique [0002] High-voltage transformers are transformers suitable for converting large voltages into small voltages or large currents into small currents in 1kv to 220kv power systems for easy measurement, protection, and use. They are mainly used in AC circuits to monitor the operation of electrical equipment and For the control system, a head is provided on the high-voltage transformer shell to act as a seal. In the prior art, the head of the high-voltage transformer head molded by stamping is generally a spherical head, and the anti-breakdown pressure resistance is not high. The problem is not conducive to improving the performance of high-voltage transformers, and it is difficult to dissipate heat at high temperature during the die stamping process, and the heat resistance of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/10B21D37/16H01F41/00C09D163/00C09D127/06C09D7/40C09D5/00
CPCB21D37/10B21D37/16C08L2205/03C09D5/00C09D7/61C09D127/06C09D163/00H01F41/00C08L27/06C08L77/00C08K13/02C08K3/36
Inventor 彭安华杜爱民唐运民杜东亮
Owner NINGBO RONGYU MACHINERY
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