Dry-type transformer high-pressure casting body and casting tool for casting tapping terminal of same

A dry-type transformer and terminal technology, which is applied in the field of transformers, can solve problems such as cracking of the convex table surface, and achieve the effect of ensuring good contact and solving the cracking of the convex table surface

Inactive Publication Date: 2016-02-24
重庆吉能变压器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to provide a high-voltage cast body using the tap terminal casted by the above-mentioned casting tool. In addition to being mor

Method used

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  • Dry-type transformer high-pressure casting body and casting tool for casting tapping terminal of same
  • Dry-type transformer high-pressure casting body and casting tool for casting tapping terminal of same
  • Dry-type transformer high-pressure casting body and casting tool for casting tapping terminal of same

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Embodiment Construction

[0017] In order to make the technical means, creative features, goals and functions achieved by the present invention clearer and easier to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments:

[0018] Such as Figure 3-4 As shown, the present invention provides a dry-type transformer high-voltage coil tap terminal casting tool, including a tool body 30, and the tool body 30 is provided with a notch 31 for the tap terminal 40 to be inserted into, and the tool body 30 is in the slot The bottom of the port 31 is provided with a positioning groove 32 for positioning the tap terminal 40, and a through threaded hole 33 is also provided between the positioning groove 32 and the back side of the tooling body 30; when the tap terminal 40 to be poured is inserted into the groove When opening 31 , the bottom is positioned by positioning groove 32 and tightly connected with fastening bolt 34 penetrating...

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Abstract

The invention discloses a casting tool for a high-voltage coil tapping terminal of a dry-type transformer. The casting tool comprises a tool body, wherein a notch which is used for the tapping terminal to insert is formed in the tool body, a positioning groove for positioning the tapping terminal is formed in the bottom of the notch of the tool body, and a through threaded hole is also formed between the positioning groove and the back side of the tool body; when the tapping terminal to be cast is inserted into the notch, the bottom of the tapping terminal is positioned by virtue of the positioning groove and is tightly connected with a tightening bolt penetrating through the back side of the tool body, and a gap between the notch and the tapping terminal is filled with epoxy resin packing. The invention further discloses a dry-type transformer adopting the tapping terminal cast by the casting tool. The tapping terminal casting tool does not adopt a traditional sealing gasket and is provided with the positioning groove for positioning the tapping terminal, so that the part, which is arranged in the positioning groove, of the cast tapping terminal is basically not cast with insulation epoxy resin, and the favorable contact between the tapping terminal and an external copper bar is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of transformers, in particular to a high-voltage casting body of a dry-type transformer and a casting tool for casting its tap terminals. Background technique [0002] The high-voltage casting body of the dry-type transformer is wrapped around the outer circumference of the high-voltage wire, and is cast outside the high-voltage coil with epoxy resin in a vacuum state. Such as figure 1 As shown, it is a cross-sectional view of a high-voltage cast body of an existing dry-type transformer, including a high-voltage cast body 10, a high-voltage wire 11 wrapped in the high-voltage cast body 10, and a tapped side of the high-voltage cast body 10 with a convex platform 12. Tapping terminals 14 are arranged on the boss surface 12 . At the same time, there is a corner 13 between the boss surface 12 and the high-pressure casting body 10. However, the corner 13 is prone to cracking at low temperature. Some manufactur...

Claims

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Application Information

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IPC IPC(8): H01F41/04H01R43/16B29C39/10
CPCH01F41/04B29C39/10H01R43/16
Inventor 张勇周安根
Owner 重庆吉能变压器有限公司
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