| 摘要 |
PURPOSE: An electric wire for helical HDPE of Joint equipment is provided to simplify assembly process by filling filler into a corrugated steel pipe after connecting a coupling onto a joint of corrugated steel pipe. CONSTITUTION: An electric wire for helical HDPE of Joint equipment comprises a first coupling(10), a second coupling(20), an elastic member(30), and a filler. The first coupling comprises a space part(50), a plate(11), and a filler inlet hole. The second coupling is connected to the plate of the first coupling by the fixing member. An outlet hole for discharging the air inside the space part is formed at one end of the outer circumference of the second coupling. The elastic member is respectively formed at both ends and the inside of the first coupling and the second coupling. An external impact delivered into a corrugated pipe is prevented by sealing the space part. The filler fills the space part of the first coupling and the second coupling through an inlet hole of the first coupling to fill, resulting in maintaining its air-tightness.
|
