| 摘要 |
PURPOSE:To inspect leakage by pneumatic pressure by providing a sealing surface in a connection path in a captioned apparatus for supplying liquid fuel in a constant oil level device through the path and an oil feed tube to a burner, inserting a sealing member to the path, bringing it in close contact with the sealing surface, and applying pneumatic pressure to the tube. CONSTITUTION:A tapered sealing surface 30 is formed on the lower end of a vertical connection passage 27 of a connection path 22, and a sealing member 40 is inserted to be sealed. Leakage inspection by pneumatic pressure is conducted by coating between the end of a connection cylinder 31 and the outer surface of a joint 33, and between the end face of the joint 33 and the outer surface of an oil feed tube 32 with soap water A. A bush 38 is removed from an insertion hole 37, a sealing rod 42 of the member 40 is inserted, a close contact surface 43 is brought into pressure contact with the surface 30 to be sealed. pneumatic pressure is applied from the tube 32, and presence or absence of bubbles is checked in the water A. It can be inspected by the pneumatic pressure with the structure. |
