Transformer high-pressure sleeve fixing structure
A fixed structure and high-voltage bushing technology, which is applied to transformer/inductor components, transformer/inductor coils/windings/connections, electrical components, etc., can solve problems such as poor uniformity and scattered stress points on flanges. Achieve good sealing performance, convenience and efficiency of time-saving and labor-saving
Inactive Publication Date: 2013-12-04
QUZHOU HANGYONG TRANSFORMER
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Problems solved by technology
[0006] The purpose of the present invention is to provide a transformer high-voltage bushing fixing structure. By using this structure to fix the high-voltage bushing, not only can the high-voltage bushing be fixed and positioned on the transformer oil tank cover very firmly, but also solve the problem of the flange of the porcelain bottle very well. The problem of scattered stress points and poor uniformity has the advantages of good sealing performance, simple structure and convenient assembly
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[0018] see figure 2 . This transformer high-voltage bushing fixing structure includes porcelain bottle 2, flange 21 and fasteners. With the cooperation of nut 3 and screw rod 4, the flange 21 is fixed and positioned on the three pieces of pressing parts on the transformer oil tank cover 1. 5. The three pressing parts 5 are respectively composed of a body whose inner wall shape is adapted to the contact surface of the flange 21, and through holes located at both ends of the body. The through holes are used to receive the screw rod 4, which is fastened by the nut 3 Cover 1. In actual implementation, the structures and shapes of the three pressing parts 5 are consistent, but they can also be changed according to the shape of the contact surface of the flange 21, so that they may not be consistent. In addition, when the three pressing parts 5 are connected end to end and have stacked through-holes, all the through-holes are exactly located on the circumferential line of the sa...
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The invention provides a transformer high-pressure sleeve fixing structure, which comprises a porcelain bottle, a flange of the porcelain bottle and three compression elements. The transformer high-pressure sleeve fixing structure is characterized in that the compression elements are respectively in flaky shapes, each compression element is formed by a body and fixing through holes, the inner wall shape of each body is matched with the contact surface of the flange, and the fixing through holes are positioned at the two ends of the bodies. The original compression elements in an independent form after being installed are improved into mutually connected structures, and in addition, the inner wall shapes of the compression elements are matched with the shape of the contact surfaces of the flange requiring contact fastening, so under the condition that the hardness of materials for manufacturing the compression elements is sufficiently ensured, three sets of fastening elements positioned on the same circumference line are used for positioning and fixation. Two press feet of each of the three compression elements are in a pairwise connected integral structure in a matched fastening mode, the pressing force of the porcelain bottle uniformly presses down, and the porcelain bottle is tightly pressed on a box cover through a sealing rubber pad in a load uniform distribution mode, so the sealing performance is very good, and the oil leakage phenomenon of a transformer cannot occur.
Description
[0001] 【Technical field】 [0002] The invention relates to a pressing component of a transformer high-voltage bushing. [0003] 【technical background】 [0004] Transformer high-voltage bushing is an outlet device that leads the high-voltage wire inside the transformer to the outside of the oil tank through the tank cover. It not only serves as the ground insulation of the lead wire, but also plays the role of fixing the lead wire. It is one of the important accessories of the transformer. figure 1 It shows the prior art structure of fixing the high-voltage bushing on the transformer oil tank cover: the porcelain bottle b is placed vertically, the flange b2 is flatly attached to the cover a, and the three independent pressing parts d are respectively passed through the nut c Positioning with the screw c1, the two fixed arms d1 of each pressing part d ride on the flange b2 of the porcelain bottle b, so that the porcelain bottle b (the high-voltage bushing is located in the mi...
Claims
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IPC IPC(8): H01F27/32H01F27/00
Inventor 吴振锋余婵吴利华谢建灿
Owner QUZHOU HANGYONG TRANSFORMER