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Transformer locknut assembly

A technology of anti-loosening nuts and transformers, which is applied to parts of transformers/inductors, nuts, threaded fasteners, etc. It can solve problems such as poor sealing and fastening, loosening of transformer valves, oil leakage, etc., and achieve enhanced sealing and tightness. Solid effect, prevent loosening, and prevent oil leakage

Pending Publication Date: 2020-01-24
ZHEJIANG BOTHWELL ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, oil-immersed transformers are often used in power supply and distribution systems of industrial and mining enterprises and civil buildings, and transformers often loosen during work, which has been criticized by the industry for a long time. The main reason is the sealing and fastening effect of the transformer itself. Poor, the factory bolts and nuts are rough processed, and the seal is not fastened; the transformer valves often loosen, resulting in oil leakage

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] The present invention is a transformer locknut assembly, such as figure 1 , 2 , 3 and 4, including a nut 1, an anti-return self-locking elastic lock ring 2 and a lock washer 3, and the anti-retreat self-lock elastic lock ring 2 is arranged between the nut 1 and the lock washer 2; the nut The lower surface is provided with a first thread 4, the first thread is five first raised strips 41 distributed on the lower surface of the nut, the length of the first raised strip is the circumference of the radius of the nut where the first raised strip is located Half of the length, half of the circumference of the lower surface of the nut does not have the first boss strip, providing a space for active fastening, so that it cannot be further tightened when it is loose and not locked. The shape of the cross-section of the first raised bar is triangular, such as figure 2 As shown, it is further a right-angled triangle, one of the right-angled sides is fixedly connected to the low...

Embodiment 2

[0030] The difference from Example 1 is that the anti-back self-locking elastic lock ring, such as Figure 5 As shown, an upward-turning rectangular upper flap 510 is arranged on the peripheral edge of the anti-back self-locking elastic lock ring, and a downward-turning rectangular lower flap 520 is arranged on both sides of the upper flap 510, which are arranged alternately in turn to surround the entire peripheral edge; Folding has a certain set angle, which is 45 degrees here, and all the flaps form an inclined plane. When the lock is reversed, the first straight tooth will be against the back of the slope, so that it cannot be loosened.

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Abstract

The invention relates to the technical field of transformer looseness prevention, and discloses a transformer locknut assembly. The transformer locknut assembly comprises a nut, an anti-retreating self-locking elastic lock ring and a lock washer, wherein the anti-retreating self-locking elastic lock ring is arranged between the nut and the lock washer; a first forward tooth is arranged at the lower end of the nut; the anti-retreating self-locking elastic lock ring is provided with a turning piece, and the turning part comprises an upward turning part which is turned upwards and a downward turning part which is turned downwards; and a second forward tooth is arranged at the upper end of the lock washer, and a reverse tooth is arranged at the lower end of the lock washer. The nut assembly can be screwed when being fastened clockwise, and is automatically locked during reverse rotation, and the nut assembly has the advantages of being only tight and not loose; the nut assembly is suitablefor various connections of a transformer, has a fastening effect, and prevents looseness; and the nut assembly is applied to a transformer valve, so that the sealing and fastening effects are enhanced, and oil leakage is prevented.

Description

technical field [0001] The invention relates to the field of transformer anti-loosening technology, in particular to a transformer anti-loosening nut assembly. Background technique [0002] Transformer is a commonly used equipment in production and operation. It is a device that uses the principle of electromagnetic induction to change AC voltage. Among them, oil-immersed transformers are often used in power supply and distribution systems of industrial and mining enterprises and civil buildings, and transformers often loosen during work, which has been criticized by the industry for a long time. The main reason is the sealing and fastening effect of the transformer itself. Poor, the bolts and nuts shipped from the factory are rough processed, and the seals are not fastened well; the transformer valves often loosen, resulting in oil leakage. Contents of the invention [0003] The purpose of the present invention is to solve the problems of the technologies described above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/24F16B39/282H01F27/00
CPCF16B39/24F16B39/282H01F27/00
Inventor 叶仁富占倩倩应晓云姜方军
Owner ZHEJIANG BOTHWELL ELECTRIC
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