| 摘要 |
PURPOSE: An underground line protection pipe having a fireproof shutter is provided to discharge toxic gas from the underground line by protecting a fire from a distribution box. CONSTITUTION: An underground line protection pipe having a fireproof shutter includes an underground line protection body(100), a connection device, a sealing unit, a fire wire, a toxic gas exhaust apparatus, a fire alarm. A connector includes a body through which an underground line is penetrated and is formed with an insulating material and also includes a protrusion. The sealing member is arranged in a collection unit and includes the sealing member of a nonflammable material and a torsion spring. A connection wire(420) has a nonflammable material. |
