Main insulation structure of oil-immersed transformer and manufacturing method thereof
The technology of an oil-immersed transformer and a manufacturing method, which is applied in the field of transformer manufacturing, can solve the problems of high cost, many processing parts, and many materials, and achieve the effects of convenient processing and production, reliable structure, and reduced cost of main materials.
Active Publication Date: 2016-07-13
ZHENJIANG TIANLI TRANSFORMER
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Problems solved by technology
The advantage of this structure is that it is reliable, but the disadvantage is that there are many parts to be processed, and to pass the existing test and detection requirements, it is necessary to ensure sufficient insulation distance, which requires a lot of materials and high cost.
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[0017] A main insulation structure of an oil-immersed transformer, see figure 1 and figure 2 , the main insulation structure includes a low-voltage coil 1, a high-voltage coil 2, an upper clamp 3, a lower clamp 4 and an iron core 5, and the outer side of the low-voltage coil is covered with a cable paper layer 11, and the cable paper layer consists of 12 pieces of 0.08mm cable paper constitute. The outer side of the cable paper layer is coated with an insulating cardboard 12 for fixing and strengthening insulation, and the insulating cardboard is one layer with a thickness of 0.5 mm. Wrap crepe paper on the outer side of the insulating cardboard to form a soft corner ring 13; there are 2 sheets of crepe paper with a thickness of 0.8 mm. The two ends of the soft angle ring are turned over and flattened toward the high-voltage coil side, and pressed within the upper and lower end faces of the partition 6; an upper insulating backing plate 7 is provided between the upper clamp...
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The invention discloses a main insulation structure of an oil-immersed transformer and a manufacturing method of the main insulation structure. Low-voltage coils are coated with cable paper layers, and the cable paper layers are coated with insulation paper boards with the fixing, reinforcing and insulating effects; the insulation paper boards are coated with crepe paper, and soft angle rings are formed; the two ends of the soft angle rings are turned over and flattened towards the sides of corresponding high-voltage coils and pressed into the upper end faces and the lower end faces of corresponding partition boards; an upper insulation padding board is arranged between an upper clamping part and the upper ends of the low-voltage coils and between the upper clamping part and the upper ends of the high-voltage coils, and a lower insulation padding board is arranged between a lower clamping part and the lower ends of the low-voltage coils and between the lower clamping part and the lower ends of the high-voltage coils. The structure is reliable and reasonable, low in cost, and convenient to machine and produce, and completely meets the requirements for modern large-scale and intensive production.
Description
technical field [0001] The invention belongs to the field of transformer manufacturing, and relates to a main insulation structure of an oil-immersed transformer and a manufacturing method thereof. Background technique [0002] The main insulation structure of 10kV oil-immersed distribution transformer is generally, corrugated oil passage or curtain oil passage is used between high and low voltage, iron yoke insulation is used between the coil and the upper and lower iron yokes of the iron core, and phase partitions are used for insulation between phases. The advantage of this structure is that it is reliable, but the disadvantage is that there are many parts to be processed, and to pass the existing test and detection requirements, it is necessary to ensure sufficient insulation distance, which requires many materials and high cost. Contents of the invention [0003] In order to overcome the problems existing in the prior art, the purpose of the present invention is to pr...
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IPC IPC(8): H01F27/32H01B3/52H01F41/12
Inventor 李云孙国平
Owner ZHENJIANG TIANLI TRANSFORMER