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Special tool for inspection and maintenance of transformer bushing oil drain valve

A technology for transformer bushings and special tools, which is applied in the direction of manufacturing tools, wrenches, wrenches, etc., to achieve the effect of convenient maintenance

Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a special tool for inspection and maintenance of transformer bushing oil drain valve, which can solve the oil discharge problems of various transformer bushing oil drain valves

Method used

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  • Special tool for inspection and maintenance of transformer bushing oil drain valve
  • Special tool for inspection and maintenance of transformer bushing oil drain valve
  • Special tool for inspection and maintenance of transformer bushing oil drain valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like figure 1 , figure 2 and image 3 As shown in the figure, the special tool for overhauling the oil drain valve of the transformer bushing includes a handle 1, one end of the handle 1 is provided with an adjustable wrench 2, the upper surface of the other end of the handle 1 is provided with a four-corner wrench with adjustable size, and the lower surface is provided with an adjustable size wrench The four-cornered wrench includes four jaw blocks 3 on the upper, lower, left and right.

[0022] At least two of the four jaw blocks 3 are arc-shaped.

[0023] The jaw blocks 3 are respectively provided with threaded holes, and an adjusting screw 4 is arranged in the threaded holes, and the adjusting screw 4 is matched with the threaded holes.

[0024] The size-adjustable circular sleeve includes multiple sleeves 5 that are nested with each other, the inner surface of the side wall of the outermost sleeve is provided with evenly distributed longitudinal ribs, and the i...

Embodiment 2

[0029] like Figure 4 As shown, the difference between this embodiment and the first embodiment is that the jaw block 3 and the handle 1 form a movable fit with the sliding groove 7 through the sliding block, and the sliding groove 7 is provided with a limiting device.

[0030] The limiting device is a limiting slot 8 .

[0031] When in use, the oil draining method of common oil drain valve and cylindrical oil drain valve is the same as that of the first embodiment. For the quadrangular oil drain valve, lift the jaw stopper 3 from the limit groove 8 and slide it along the chute 7 to slide it. After reaching a suitable position, press it down into the limit groove, so that the jaw block 3 can clamp the oil drain valve tightly, and the oil can be drained.

Embodiment 3

[0033] like Figure 5 As shown, the difference between this embodiment and the second embodiment is that the limiting device is a tightening screw 9 .

[0034] When in use, the oil draining method of common oil drain valve and cylindrical oil drain valve is the same as that of the previous embodiment. For the quadrangular oil drain valve, first loosen the tightening screw 9, and slide the jaw block 3 along the chute 7 to After the proper position, the tightening screw 9 is then tightened so that the position of the jaw block 3 is fixed. At this time, the jaw block 3 can clamp the oil drain valve tightly, and the oil can be drained.

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PUM

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Abstract

The invention discloses a tool special for transformer bushing oil drain valve maintenance. The tool structurally comprises a handle. One end of the handle is provided with an adjustable spanner, the upper surface of the other end of the handle is provided with a four-corner spanner with the adjustable size, the lower surface of the other end of the handle is provided with a circular sleeve with the adjustable size, and the four-corner spanner comprises an upper jaw check block, a lower jaw check block, a left jaw check block and a right jaw check block. The tool special for transformer bushing oil drain valve maintenance can achieve oil drain of various transformer bushing oil drain valves, and brings convenience to transformer maintenance.

Description

technical field [0001] The invention belongs to the field of electric equipment accessory installation in the electric power industry, in particular to a special tool for overhauling a transformer bushing oil drain valve. Background technique [0002] At present, the more common transformer bushing oil drain valves are of different sizes, and a variety of different wrenches are required for maintenance. There are also some less common transformer bushing oil drain valves, which require special types of tools to solve their oil draining. The problem is that the less common transformer bushing oil drain valves are mainly quadrangular and cylindrical. The coexistence of the above-mentioned various forms of transformer bushing oil drain valves leads to the inability of maintenance personnel to accurately prepare transformer bushing oil drain tools when preparing tools and equipment, which brings certain troubles to transformer maintenance. If the transformer bushing cannot be ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B13/56B25B13/50
CPCB25B13/06B25B13/12B25B13/16B25B13/50
Inventor 康庆奎李永生王琳王秉春刘荣泉夏立军杨春梅赵建华
Owner STATE GRID CORP OF CHINA