How to Deal with Oil – immersed Transformer Leakage Point?

20Dec

How to Deal with Oil – immersed Transformer Leakage Point?

 

How to Deal with Oil – immersed Transformer Leakage Point?
1.Oil Leakage from Welding
Mainly because the welding quality is poor, there are virtual welding, pinholes, sand holes and other defects in the weld, it cannot be found because of welding flux and paint coverage, but after running the hidden danger will be exposed, in addition to the electromagnetic vibration will make the welding vibration crack, resulting in leakage,too. For the leakage phenomenon has happened, first find out the leakage points. For serious leakage parts, metal tools such as flat shovels or sharp punches can be used to riveting the leakage points. After controlling the amount of leakage, the surface needs to be cleaned up. Polymer composite materials can be used for curing, which can achieve the purpose of long-term treatment of leakage.
2.Oil Leakage of Seals
The reason for poor sealing is that the seal between the box edge and the box cover is usually sealed with oil-resistant rubber rod or rubber pad. If the joint is not handled properly, it will cause oil leakage fault. Some are bound with plastic tape, and some directly press the two ends together. Because of rolling during installation, the interface can not be pressed firmly, which can not play the role of sealing, and it is still leaking oil. Material can be used to bond the joint as a whole, and the oil leakage phenomenon can be greatly controlled. If the operation is convenient, the metal shell can also be bonded at the same time to achieve the purpose of leakage control.
3.Leakage of Oil at Flange Connection
Flange surface is uneven, the fastening bolt is loose, the installation process is not correct, so that the screw fastening is not good, resulting in oil leakage. First the loose screw fastening, the implementation of the flange sealing treatment, and for the possible leakage of bolts are also processed, to achieve the purpose of complete treatment. To tighten the loose bolt, it must be operated in strict accordance with the operation process.
4.Bolt or Pipe Thread Leakage of Oil
Factory processing is rough, poor sealing, oil immersed transformer seal for a period of time will produce leakage of oil fault. Adopt high polymer material to seal the bolt to achieve the purpose of controlling the leakage. Another way is to screw the bolt (nut) spin out, the surface of the daub after the release agent, and then in the surface of the daub material after fastening, curing can achieve the purpose of treatment.
5.Cast Iron Oil Leakage Oil Leakage
The main reason is that there are sand holes and cracks in cast iron. Aiming at crack leakage, drilling and stopping hole is the best method to eliminate stress and avoid extension. Treatment can be based on the situation of the crack, in the leakage point into the lead wire or hand hammer riveting. Then the leakage point is cleaned with acetone and sealed with material. The casting sand hole can be sealed directly with the material.
6.Radiator Leakage of Oil
Radiator radiator tubes are usually made of seamed steel tubes flattened by stamping. Oil leakage often occurs in the curved part and welded part of the radiator tubes. This is because when stamping the radiator tubes, the outer wall of the tube is subject to tension, and the inner wall is subject to pressure, resulting in residual stress. The upper and lower plate valve of the radiator (butterfly valve) is closed, so that the oil in the radiator and the oil in the box are cut off, reducing the pressure and leakage. After identifying the site of leakage, carry out appropriate surface treatment, and then use the material for sealing.
7. Leakage of Oil in Porcelain Bottles and Glass Oil Standards
Usually due to improper installation or sealing failure. Polymer composite material can be very good metal, ceramic, glass and other materials for bonding, so as to achieve the fundamental control of oil leakage.

How to Deal with Oil – immersed Transformer Leakage Point?

1.Oil Leakage from Welding

Mainly because the welding quality is poor, there are virtual welding, pinholes, sand holes and other defects in the weld, it cannot be found because of welding flux and paint coverage, but after running the hidden danger will be exposed, in addition to the electromagnetic vibration will make the welding vibration crack, resulting in leakage,too. For the leakage phenomenon has happened, first find out the leakage points. For serious leakage parts, metal tools such as flat shovels or sharp punches can be used to riveting the leakage points. After controlling the amount of leakage, the surface needs to be cleaned up. Polymer composite materials can be used for curing, which can achieve the purpose of long-term treatment of leakage.


2.Oil Leakage of Seals

The reason for poor sealing is that the seal between the box edge and the box cover is usually sealed with oil-resistant rubber rod or rubber pad. If the joint is not handled properly, it will cause oil leakage fault. Some are bound with plastic tape, and some directly press the two ends together. Because of rolling during installation, the interface can not be pressed firmly, which can not play the role of sealing, and it is still leaking oil. Material can be used to bond the joint as a whole, and the oil leakage phenomenon can be greatly controlled. If the operation is convenient, the metal shell can also be bonded at the same time to achieve the purpose of leakage control.


3.Leakage of Oil at Flange Connection

Flange surface is uneven, the fastening bolt is loose, the installation process is not correct, so that the screw fastening is not good, resulting in oil leakage. First the loose screw fastening, the implementation of the flange sealing treatment, and for the possible leakage of bolts are also processed, to achieve the purpose of complete treatment. To tighten the loose bolt, it must be operated in strict accordance with the operation process.


4.Bolt or Pipe Thread Leakage of Oil

Factory processing is rough, poor sealing, oil immersed transformer seal for a period of time will produce leakage of oil fault. Adopt high polymer material to seal the bolt to achieve the purpose of controlling the leakage. Another way is to screw the bolt (nut) spin out, the surface of the daub after the release agent, and then in the surface of the daub material after fastening, curing can achieve the purpose of treatment.


5.Cast Iron Oil Leakage Oil Leakage

The main reason is that there are sand holes and cracks in cast iron. Aiming at crack leakage, drilling and stopping hole is the best method to eliminate stress and avoid extension. Treatment can be based on the situation of the crack, in the leakage point into the lead wire or hand hammer riveting. Then the leakage point is cleaned with acetone and sealed with material. The casting sand hole can be sealed directly with the material.


6.Radiator Leakage of Oil

Radiator radiator tubes are usually made of seamed steel tubes flattened by stamping. Oil leakage often occurs in the curved part and welded part of the radiator tubes. This is because when stamping the radiator tubes, the outer wall of the tube is subject to tension, and the inner wall is subject to pressure, resulting in residual stress. The upper and lower plate valve of the radiator (butterfly valve) is closed, so that the oil in the radiator and the oil in the box are cut off, reducing the pressure and leakage. After identifying the site of leakage, carry out appropriate surface treatment, and then use the material for sealing.


7. Leakage of Oil in Porcelain Bottles and Glass Oil Standards

Usually due to improper installation or sealing failure. Polymer composite material can be very good metal, ceramic, glass and other materials for bonding, so as to achieve the fundamental control of oil leakage.