CN112621105A

CN112621105A - Method for treating oil leakage of oil-immersed transformer of transformer substation

Info

Publication number: CN112621105A
Application number: CN202110042519.6A
Authority: CN
Inventors: 陈甫松; 韩懿男; 赵春喜; 龚立志; 刘帅
Original assignee: Tangshan Power Supply Co Of State Grid Hebei Electric Power Co ltd; State Grid Corp of China SGCC
Current assignee: Tangshan Power Supply Co Of State Grid Hebei Electric Power Co ltd; State Grid Corp of China SGCC
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-04-09

Abstract

The invention relates to a method for treating oil leakage of an oil-immersed transformer of a transformer substation, and belongs to the technical field of transformer maintenance. The technical scheme of the invention is as follows: firstly, cleaning the surface of a body; then, a thin layer of fossil powder or a dry soil surface is stained on a finger, the finger is pressed forcibly on the just greasy dirt area, whether the finger has an oil spot or not is seen after the finger is pressed, and when the finger has the oil spot, paint is scraped from the place just pressed by the hand, so that a leakage point is easily found; if the leakage point is small, it can be directly welded, if the leakage point is large, it needs to fill asbestos rope or metal filler, then the periphery is undergone the process of surfacing welding, then it adopts small welding rod and large current quick arc-striking repair welding, and when the radiator wall is thin or is not suitable for electric welding to make leakage stoppage, it also can use leakage-stopping glue to make leakage stoppage. The invention has the beneficial effects that: the oil-immersed transformer oil leakage prevention device is simple and convenient to operate, effectively prevents oil leakage of the oil-immersed transformer, improves the safety of equipment operation, and reduces accidents.

Description

Method for treating oil leakage of oil-immersed transformer of transformer substation

Technical Field

The invention relates to a method for treating oil leakage of an oil-immersed transformer of a transformer substation, and belongs to the technical field of transformer maintenance.

Background

Generally, the oil immersed transformer of the transformer substation is barrel-shaped, and a winding is immersed in an oil drum. The oil leakage phenomenon of oil-filled equipment occurs sometimes, and the oil leakage of operating equipment not only can affect the service life of the equipment, but also can affect the safe and stable operation of a system in serious cases. The reasons for and the treatment methods for several oil leaks of the operating oil-filled equipment are summarized as follows: the design is not reasonable; non-liability or inadequate technology in the installation; the transformer shell is formed by welding steel plates, the number of welding spots is large, the welding seams are long, the number of the welding spots of one transformer with 20000kVA is more than 70, the longest welding seam is more than 10 meters, phenomena such as sand holes, air holes, insufficient welding, desoldering and the like are easily caused, and some transformer shells are difficult to find in a factory pressure test. This results in leakage of oil from the equipment during operation; during the operation of the equipment, the parts are damaged to cause oil leakage; for the position easy to leak oil, the installation needs to be more careful, for example, the main transformer gas relay is clamped between the oil conservator and the body, and two sides are respectively provided with a group of valves which are connected by a penetrating screw rod, and the oil leakage can be caused when an interface is not well connected; the oil leakage of the transformer is generally treated only by the poor treatment of the oil leakage caused by sand holes and air holes of welding seams, and some skills are needed to find oil leakage points. The initial leakage is generally difficult to find, and when the leakage is more, the leakage is already a piece of greasy dirt. The leak point is very small, so the finding is very difficult.

Disclosure of Invention

The invention aims to provide a method for treating oil leakage of an oil-immersed transformer of a transformer substation, which is simple and convenient to operate, effectively prevents oil leakage of the oil-immersed transformer, improves the running safety of equipment, reduces accidents and effectively solves the problems in the background art.

The technical scheme of the invention is as follows: a method for treating oil leakage of an oil-immersed transformer of a transformer substation comprises the following steps: firstly, cleaning the surface of a body; then, a thin layer of fossil powder or a dry soil surface is smeared by fingers, and the fingers press the soil on the just greasy dirt area; after the finger is pressed, whether the finger has an oil spot or not is judged, and when the finger has the oil spot, paint is scraped from the place just pressed by the hand, so that a leakage point is easily found; if the leakage point is small, the heat radiator can be directly welded, if the leakage point is large, asbestos ropes or metal fillers need to be filled, then the periphery is subjected to surfacing welding, then the small welding rod and large current rapid arc striking repair welding is adopted, and when the wall of the heat radiator is thin or is not suitable for electric welding leakage stoppage, leakage stoppage is carried out by using leakage stoppage glue.

The invention has the beneficial effects that: the oil-immersed transformer oil leakage prevention device is simple and convenient to operate, effectively prevents oil leakage of the oil-immersed transformer, improves the safety of equipment operation, and reduces accidents.

Drawings

FIG. 1 is a construction drawing for cleaning the surface of a body;

FIG. 2 is a finger-applied thin layer of fossil powder or dry soil;

FIG. 3 is a view showing that the finger is pressed down to see whether there is any oil spot in the oil stain area;

FIG. 4 is a view of preparing a leakage blocking glue;

FIG. 5 is a view showing that the wall of the radiator is thin and leak stoppage is performed by using a leak stoppage adhesive;

fig. 6 is a diagram of the completed plugging state.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are preferred embodiments of the present invention. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention, and not all embodiments; it should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A method for treating oil leakage of an oil-immersed transformer of a transformer substation comprises the following steps: firstly, cleaning the surface of a body; then, a thin layer of fossil powder or a dry soil surface is smeared by fingers, and the fingers press the soil on the just greasy dirt area; after the finger is pressed, whether the finger has an oil spot or not is judged, and when the finger has the oil spot, paint is scraped from the place just pressed by the hand, so that a leakage point is easily found; if the leakage point is small, the heat radiator can be directly welded, if the leakage point is large, asbestos ropes or metal fillers need to be filled, then the periphery is subjected to surfacing welding, then the small welding rod and large current rapid arc striking repair welding is adopted, and when the wall of the heat radiator is thin or is not suitable for electric welding leakage stoppage, leakage stoppage is carried out by using leakage stoppage glue.

The leakage of the transformer is seasonal, and generally occurs when seasons alternate. Most obviously, when the air temperature is decreased in alternation in autumn and winter or in a sudden way in winter, the sealing gasket is shrunk to cause oil leakage.

Claims

1. A method for treating oil leakage of an oil-immersed transformer of a transformer substation is characterized by comprising the following steps: firstly, cleaning the surface of a body; then, a thin layer of fossil powder or a dry soil surface is smeared by fingers, and the fingers press the soil on the just greasy dirt area; after the finger is pressed, whether the finger has an oil spot or not is judged, and when the finger has the oil spot, paint is scraped from the place just pressed by the hand, so that a leakage point is easily found; if the leakage point is small, the heat radiator can be directly welded, if the leakage point is large, asbestos ropes or metal fillers need to be filled, then the periphery is subjected to surfacing welding, then the small welding rod and large current rapid arc striking repair welding is adopted, and when the wall of the heat radiator is thin or is not suitable for electric welding leakage stoppage, leakage stoppage is carried out by using leakage stoppage glue.