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Oil replenishment method for power transformer and expander lifting device thereof

A technology of power transformer and expander, which is applied in the direction of transformer/inductor cooling, switchgear, electrical components, etc., can solve the problems of limited working site environment, large footprint, and danger, and reduce high-altitude operations The effect of reducing personnel, reducing work intensity, and facilitating oil replenishment operations

Active Publication Date: 2021-04-27
YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Manual work is time-consuming and laborious, and many people work at high places, which is dangerous; the use of cranes covers a large area and the working site environment is limited

Method used

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  • Oil replenishment method for power transformer and expander lifting device thereof
  • Oil replenishment method for power transformer and expander lifting device thereof
  • Oil replenishment method for power transformer and expander lifting device thereof

Examples

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Embodiment Construction

[0020] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a method for replenishing oil for a power transformer includes the following steps:

[0022] 1) Prepare the expander lifting device; the expander lifting device includes a handle 14, a telescopic lever 12, a fixed bracket 8, a positioning device; the right end of the telescopic lever 12 is provided with a right end hole 10, and the upper end of the positioning device is hung on the right end hole 10; the left end of the telescopic lever 12 is provided with a left end groove 13, the upper end of the grip 14 is hung in the left end groove 13, the upper end of the fixed bracket 8 is hinged by the shaft 11 and the telescopic lever 12, and the bottom of the fixed bracket 8 is formed by Right plate and left plate are formed (the top of right plate and left plate and fixed supp...

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Abstract

The invention belongs to the technical field of power systems, and in particular relates to an oil replenishment method for a power transformer and an expander lifting device thereof. A method for replenishing oil for a power transformer, characterized in that it comprises the following steps: 1) preparing an expander lifting device; the expander lifting device includes a handle, a telescopic lever, a fixed bracket, and a positioning device; 2) passing the fixed bracket through The slot is inserted on the metal expander cover; grasp the metal expander with the gripper; remove the positioning device from the right end hole, and fix the lower end of the positioning device on the fixing ring on the base; press down on the right end of the telescopic lever Lift it up to the metal expander, and then hang the upper end of the positioning device on the right end hole to position the telescopic lever; 3) Supplement oil to the oil-immersed transformer; after oil replenishment, remove the positioning device from the right end hole, stretch The right end of the lever rises back up and the metal expander falls. The method and the device are time-saving and labor-saving.

Description

technical field [0001] The invention belongs to the technical field of power systems, and in particular relates to an oil replenishment method for a power transformer and an expander lifting device thereof. Background technique [0002] The oil-immersed transformer with a voltage level of 35kV and above adopts a fully sealed metal expander structure. When the transformer lacks oil, the metal expander is in a shrinking state under the action of negative pressure and self-weight. When replenishing transformer oil, two people need to stand on the transformer frame to stretch the metal expander by means of poles or cranes. The minimum stretching force is about 40 kg force or more. When the metal expander reaches the predetermined height The refueling work is performed by another person. Manual work is time-consuming and laborious, and many people work at high places, which is dangerous; the use of cranes occupies a large area and the working site environment is limited. Conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/14H02B3/00
CPCH01F27/14H02B3/00
Inventor 郭士东郭书言陈成毕重盈覃江
Owner YICHANG POWER SUPPLY CO OF STATE GRID HUBEI ELECTRIC POWER CO LTD
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