Binding film for leakage detection of sulfur hexafluoride electric equipment

[0017] Example 1:

[0018] The thickness of the plastic layer is 0.2mm, the diameter of the cylindrical plastic body is 2mm, the height is 5mm, the spacing between each cylindrical plastic body is 20mm, and the thickness of the plastic film is 0.05mm. According to the shape of the tested part, the size of the plastic layer is cut, and the shape corresponding to the tested part is spliced ​​together. Then the plastic film is pasted on the flat side of the plastic layer through double-sided tape to form a whole, and the overall surface area of ​​the plastic layer is calculated. Place the cylindrical plastic body of the plastic layer toward the component to be tested, and the top of each cylindrical plastic body is in close contact with the component to be tested. The plastic layer wraps the component to be tested, and the wrapping seam is sealed with tape. Calculate the volume of the package cavity based on the overall surface area of ​​the plastic layer and the height of the cylindrical plastic body, and subtract the volume of all cylindrical plastic bodies in the cavity from this volume to obtain the volume of gas in the package cavity. After the wrapping cavity is closed, the wrapping layer is pierced after a specific time interval, and the gas in the wrapping cavity is tested for the concentration of sulfur hexafluoride gas. The above-mentioned partial wrapping leak detection on each sealing surface of the SF6 gas chamber can accurately calculate the relative annual leakage rate of the gas chamber.

[0019] Example 2:

[0020] The thickness of the plastic layer is 0.5mm, the diameter of the cylindrical plastic body is 5mm, the height is 20mm, the spacing between each cylindrical plastic body is 50mm, and the thickness of the plastic film is 0.2mm. According to the shape of the tested part, the size of the plastic layer is cut, and the shape corresponding to the tested part is spliced ​​together. Then the plastic film is pasted on the flat side of the plastic layer with double-sided tape to form a whole, and the overall surface area of ​​the plastic layer is calculated. Place the cylindrical plastic body of the plastic layer toward the component to be tested, and the top of each cylindrical plastic body is in close contact with the component to be tested. The plastic layer wraps the component to be tested, and the wrapping seam is sealed with tape. Calculate the volume of the package cavity based on the overall surface area of ​​the plastic layer and the height of the cylindrical plastic body, and subtract the volume of all cylindrical plastic bodies in the cavity from this volume to obtain the volume of gas in the package cavity. After the wrapping cavity is closed, the wrapping layer is pierced after a specific time interval, and the gas in the wrapping cavity is tested for the concentration of sulfur hexafluoride gas. Accurately calculate the annual air leakage rate.