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Fixed contact tap switch with rotating bearing structure

A technology of rotating bearings and tap changers, which is applied to the shape/structure of contact surfaces, transformers, electrical components, etc. It can solve the problems of unobvious hand feel and large switching torque, and achieve brisk rotation, small torque, and small connection resistance Effect

Active Publication Date: 2012-11-14
SHENYANG HONGJI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the tubular switch equipped with this mechanism has two shortcomings in long-term operation. One is that the switch torque is relatively large during operation, especially when the current reaches 1600A and above; the other is that the hand feeling is not obvious when it reaches the gear.

Method used

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  • Fixed contact tap switch with rotating bearing structure
  • Fixed contact tap switch with rotating bearing structure
  • Fixed contact tap switch with rotating bearing structure

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Embodiment Construction

[0019] Two embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] The first example is figure 1 and figure 2 As shown, it is a single-phase drum-shaped tube switch with a fixed contact of a rotating bearing structure. The reason why it is called a drum-shaped tube type is because the appearance looks like a drum-shaped switch, and its internal structure is in the form of a tube-shaped switch. However, it doesn't matter whether it integrates the drum shape, the tube shape or even the cage shape. The most important thing is that it has the patented feature of the fixed contact of the rotating bearing structure.

[0021] The main structure of this embodiment is as follows: 1 is an outer insulator, which is composed of two layers of insulating cylinders; 2 is a transmission shaft, which is composed of a shaft head that rotates on the axis line at both ends and a bow-shaped shaft in the middle section; 3 is a ...

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Abstract

The invention relates to a tapping switch which is used for a power transformer and is provided with a rotating bearing structure fix contact, comprising an insulator, a transmission shaft, a bearing frame, a dynamic contact component which is arranged on the transmission shaft and operates in fix direction and fix contact components which are respectively tapped with taps of a transformer coil. The tapping switch is characterized in that relative switching parts of each tapping fix contact components and passive contact components are provided with the rotating bearing structure. The tappingswitch has the advantages that: first, the tapping switch which is provided with the rotating bearing structure fix contact is especially applied to high voltage transformers; second, the switch is also applied to transformers with high currents; third, the operation torque of the switch is very light; forth, the shift handle feeling of the switch during the operation is definite.

Description

technical field [0001] The invention relates to a tap changer with a fixed contact of a rotating bearing structure for a power transformer. Background technique [0002] The national patent ZL03264291.1 discloses a "moving contact mechanism of non-excitation tubular switch". High-voltage switch; secondly, it can form a multi-bridge parallel, integrated base plate moving contact switching mechanism to achieve row-point contact and adapt to high-current switching; thirdly, the sliding friction of the moving contact piece of the mechanism and the switching contact of the fixed contact assembly , The film resistance layer on the contact surface of the contact can be removed by itself, so that the contact resistance is very small and the contact is reliable. [0003] However, the tubular switch equipped with this mechanism has two shortcomings in long-term operation. One is that the switch torque is relatively large during operation, especially when the current reaches 1600A and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F29/04H01H1/56H01H1/06
Inventor 任世灵
Owner SHENYANG HONGJI ELECTRICAL
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