2014年11月5日星期三

Sealing material and structure of the current transformer

AC induction cooling fan motor 
Specifications
1. Customised 
2. good quality 
3. 20 years manufacturing experience 

4. Altitude: ≤1000m

1, the seal material: now oil-immersed capacitive current transformer various sealing surface adopt oil resistant rubber gasket. Oil resistant rubber gasket performance: compression rate is 25% to 30%, at 130 ℃ when the inflation rate was 4%, and 50 ℃ when the shrinkage rate of 2.4%. According to the statistical data of the leakage of oil caused by gasket quality accounted for about 70% of the total oil asynchronous motor leakage rate of above. Choose qualified rubber gasket, to eliminate leakage of transformer oil has a key role, of generator generator set course it needs to communicate with transformer manufacturers. 2, sealing structure: transformer metal expander was adopted to realize full seal, expander oil temperature changes when the volume of the compensation effect. In order to ensure the sealing surface fully tighten, do not lead to overly compressed electricalmotor1.blogspot.com seal again, most parts of limit seal. But in porcelain bushing and tank, metal expander coupling seal face and a outlet seal face of flange connection. Parts from the scene found that the leakage of oil, it is precisely 12v motor the flange surface is the most easy to oil leakage. So the flange face seal assembly procedure and process is particularly important. Good flange sealing surface must be smooth sealing surface cleaning, the pressure appropriate, reliable positioning, flange surface parallel uniform.

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