METHOD OF CHANGING FLOW PASSAGE, METHOD OF REPLACING FLOWING OBJECT TREATING MEANS AND DEVICE FOR CHANGING FLOW PASSAGE

• Main Authors: ENDO SHOICHI, MASUZAWA GORO, SUYAMA TSUTOMU, OMIYA YOSHIMITSU
• Format: Patent
• Language: English
• Published: 07.09.2006
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; RANGES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide a method of changing a flow passage which can be performed even in a state in which flowing objects are flowing inside a pipe. SOLUTION: The flow passage is changed by replacing a predetermined portion of an existing pipe 1 with other pipe 2. At first, by covering the predetermined portion with an enclosing material 91 of which part comprises a material 92 enabling inside work from outside, the states that the flowing objects inside the existing pipe 1 are not leaked out to outside of the enclosing material 91, that inside of the existing pipe 1 is communicated with inside of the other pipe 2, and that a connection pipe 4 is stored inside the enclosing material 91 are created. Then, via the material 92, at least part 3 of the existing pipe 1 positioned inside the enclosing material 92 is removed, and the existing pipe 1 in the upstream side and the other pipe 2 are communicated with each other by the connection pipe 4. COPYRIGHT: (C)2006,JPO&NCIPI