Transformer coil fastening structure
A transformer coil and fastening structure technology, applied in the field of transformers, can solve problems such as poor insulation performance, high cost, and easy slippage, and achieve the effects of enhancing insulation performance, improving service life, and improving safety factor
Inactive Publication Date: 2016-02-24
TONGLING RUIBO ELECTRONICS TECH CO LTD
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Problems solved by technology
[0002] In the prior art, the transformer coil fastening structure is generally connected to the iron core through a compression clamp. The clamp is provided with a threaded inner hole. The threaded inner hole is used in conjunction with the fastening screw. The fastening screw must be pressed against the pad. The pressing force of the spacer is determined according to the torque of the fastening screw. This structure has the following defects: firstly, the threaded inner hole is directly tapped on the clamp, and it is easy to slip after tightening the fastening screw many times, resulting in the failure to tighten the fastening later. Screws can only replace clamps, which is costly; secondly, the fastening screws are directly pressed to the surface of the spacer. If the fastening screws are loose and the maintenance personnel do not find it, it is easy to cause the pressing device to scatter and affect the work of the transformer. Directly against the pad, the insulation performance is poor
Method used
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[0011] see figure 1 As shown, a transformer coil fastening structure includes a clamp 1, a spacer 2 and fastening bolts 3, one side of the clamp 1 is connected to the iron core 6, and an inner hole 10 is provided on the clamp 1, so that The inner hole 10 is provided with a nut 4, the fastening bolt 3 passes through the inner hole 10 and reaches the pad 2 and is fastened by the nut 4, the pad 2 compresses the coil 51, The contact end between the fastening bolt 3 and the pad 2 is a hemispherical protruding structure 11, and the end surface of the pad 2 in contact with the fastening bolt 3 is provided with a hemispherical depression that matches the hemispherical protruding structure 11 .
[0012] Further, the metal shielding layer 20 is directly provided on the hemispherical protrusion structure 11 and the hemispherical depression.
[0013] Further, the cross section of the clamp 1 is concave, the inner hole 10 is opened on a groove wall of the clamp 1, and the iron core 6 is ...
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The invention discloses a transformer coil fastening structure, belongs to the transformer technical field; the transformer coil fastening structure comprises a clamp, a cushion block and a fastening bolt; one side of the clamp is connected with a core; the clamp is provided with an inner hole; a nut is arranged in the inner hole; the fastening bolt penetrates the inner hole and presses on the cushion block, and is fastened by the nut; the cushion block presses a coil; one end, making contact with the cushion block, of the fastening bolt is a hemisphere protruding structure; the end face, making contact with the fastening bolt, of the cushion block is provided with a hemisphere recess matched with the hemisphere protruding structure. The transformer coil fastening structure is convenient in fastening, high in life, can reduce cost, has insulation performance, and can better compact the coil.
Description
technical field [0001] The invention relates to a transformer coil fastening structure, which belongs to the technical field of transformers. Background technique [0002] In the prior art, the transformer coil fastening structure is generally connected to the iron core through a compression clamp. The clamp is provided with a threaded inner hole. The threaded inner hole is used in conjunction with the fastening screw. The fastening screw must be pressed against the pad. The pressing force of the spacer is determined according to the torque of the fastening screw. This structure has the following defects: firstly, the threaded inner hole is directly tapped on the clamp, and it is easy to slip after tightening the fastening screw many times, resulting in the failure to tighten the fastening later. Screws can only replace clamps, which is costly; secondly, the fastening screws are directly pressed to the surface of the spacer. If the fastening screws are loose and the mainte...
Claims
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IPC IPC(8): H01F27/30
Inventor 王章奎徐江林
Owner TONGLING RUIBO ELECTRONICS TECH CO LTD