CN2469531Y

CN2469531Y - Contact positioner of transformer tap switch

Info

Publication number: CN2469531Y
Application number: CN 01212882
Authority: CN
Inventors: 刘刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-28
Filing date: 2001-03-28
Publication date: 2002-01-02
Anticipated expiration: 2011-03-28

Abstract

A contact positioning device applied to tap changers of transformers is characterized in that the utility model consists of a supporting element, a positioning element, a flange disc, an elastic element, etc. and renders the tap changer with convenient and reliable installation, operation and maintenance.

Description

Sub-connecting switch of transformer contact positioner

The utility model relates to a kind of contact positioner that is used for the sub-connecting switch of transformer body part, is the improvement to existing product.

The shunting switch structure as shown in Figure 1 in the market, for being used for the single-phase drum-shaped shunting switch body part of big-and-middle-sized transformer, it connects operating mechanism 1 by joining brill riveted joint joystick, this switch movable contact 3 is an annular, in have elastic component 13, its cross-over connection is in 5 on two stationary contact posts, automatically be connected across on the another location after moving contact 3 is crossed quiet post 5 peaks when operation axis 6 rotates, strong operating handle is arranged during gear shift, but because its existence of running clearance when a certain service position because between joystick and operating mechanism, riveted joint also can't see Switch main body during joystick or whether contact is in accurate position, the existence of the collimation error during promptly owing to installation, especially cover down is difficult for guaranteeing that the main shaft moving contact of exerting pressure strikes the post on the line of symmetry in two behind the transformer case lid, just be difficult to also guarantee that the contact performance of cross-over connection two contacts and contact are moving, thermal stability, thus reliability of operation reduced.

Also there is above drawback in heterogeneous cydariform rolling type switch contacts on the market.

The purpose of this utility model is to avoid above-mentioned weak point and provides a kind of energy to satisfy the sub-connecting switch of transformer contact positioner of installing with instructions for use.

The purpose of this utility model is realized by following scheme: have switch base 2, ring flange 7, keeper 10, positioning pit 8, flexible member 9, main shaft 6 etc., it is characterized in that switch base 2 is provided with ring flange 7, have on it and the corresponding positioning pit 8 in service position, be installed with supporter 12 on the main shaft 6, in flexible member 9 and keeper 10 are housed, keeper 10 and positioning pit 8 corresponding configurations.

In the such scheme, keeper 10 can be sphere or column construction.Supporter 12 can be fixed on the switch base 2, and ring flange 7 then is fixed on the main shaft 6.

According to such scheme, primary structure of the present utility model is characterised in that switch base 2 is provided with ring flange 7, and it is provided with positioning pit 8, and this hole is corresponding with the switch service position, and is promptly corresponding consistent with moving contact 3 service positions.Be installed with supporter 12 on the main shaft 6, device flexible member 9 and keeper 10 in it, 9 are pressed in the positioning pit 8 10, when operating mechanism 2 drives main shaft 6 rotations, 12 drive keepers 10 of supporter leave a positioning pit 8 and slide on ring flange, the initial moment of operation has feel greatly, when arriving another positioning pit, 10 of keepers arrive another hole automatically under flexible member 9 pressure, have than the rival and feel, be that switch arrives another service position from a service position, can feel when on the operating mechanism 1 of transformer outside, operating like this, especially when operating mechanism is installed, can feel and the accuracy of positioned internal improve the installation and debugging precision, also be convenient to the semi-finished product Performance Detection of switch and transformer from external energy.

In the said structure, keeper 10 can be steel ball or the bottom is spherical or the taper pin, with positioning pit 8 shapes on the ring flange 7 can corresponding configuration.The fixed position of supporter 12 and ring flange 7 is interchangeable, and the effect unanimity is mainly decided on the switch concrete structure.

This structure can be used on cydariform, cage type switch and other switch, especially is adapted to operating mechanism and does not become whole split type switch with Switch main body.

Below in conjunction with accompanying drawing an embodiment of the present utility model is described.

Fig. 1 is existing split type single-phase drum switch body diagram.

Fig. 2 is the single-phase drum switch body diagram of the utility model.

Fig. 3 is that the A of Fig. 2 is to view.

The utility model single-phase middle part pressure regulation 6 taps, 5 gears do not have excitation drum-shaped shunting switch body construction shown in Fig. 2,3, and Switch main body is made up of switch base 2, moving contact 3,

flexible member

9,13, main shaft 6, supporter 12 etc.

The switch base periphery is provided with 6 and strikes the post 5, and the centre is coated with main shaft 6, is set with moving contact 3 on the main shaft, and spring 13 is arranged in the contact, its by supporter 14 roof pressures on moving contact 3, make its automatic cross-over connection in strike the post 5.Be fixed with ring flange 7 on the switch base, it is provided with positioning pit 8, and this hole and switch two centre position of striking the post is corresponding, calibration is consistent with the layout of striking the post, be installed with supporter 12 on the main shaft 6, spring 9 and spherical keeper 10 are housed in the supporter, it is corresponding with the positioning pit position.When switch rotated, supporter rotated with main shaft steel ball 10 is slided to another hole from a hole.Also be provided with the gear positions numeral on the ring flange, supporter is provided with arrow.Insulating cylinder 11 is used for the usefulness of installation and insulation, and supporter working range peripheral hardware has spacer pin 15 usually.

This device can be widely used in that other is single-phase, on the tap changer for three phases, this switch makes switch movable contact can be accurately positioned in ideal position when operation, improves installation, adjustment accuracy and operating reliability.

Claims

1, a kind of contact positioner that is used for sub-connecting switch of transformer, have switch base 2, ring flange 7, keeper 10, positioning pit 8, flexible member 9, main shaft 6 etc., it is characterized in that switch base 2 is provided with ring flange 7, have on it and the corresponding positioning pit 8 in service position, be installed with supporter 12 on the main shaft 6, in flexible member 9 and keeper 10 are housed, keeper 10 and positioning pit 8 corresponding configurations.

2, by the contact positioner of the described sub-connecting switch of transformer of claim 1, it is characterized in that keeper 10 can be sphere or column construction.

3, by the contact positioner of claim 1 or 2 described sub-connecting switch of transformer, it is characterized in that supporter 12 can be fixed on the switch base 2, ring flange 7 then can be fixed on the main shaft 6.