| 摘要 |
<P>PROBLEM TO BE SOLVED: To remove dusts adhering to an inner wall surface of a side wall in a tank. <P>SOLUTION: A gas holder 1 consists of a cylindrical tank 2, a piston 3 which vertically partitions the inside of the tank 2 and can move vertically thereinside, and a seal device 10 which is arranged so as to be movable with vertical movement of the piston 3 between an inner wall surface 2c of a side wall in a tank 2 and the piston 3 and which seals clearances between respective upper and lower spaces partitioned by the piston 3, wherein a dust removing device 6 for removing dusts adhering to the inner wall surface 2c of the side wall is included. The dust removing device 6 is provided with a dust removing member 7 forming a curved surface slidable along the inner wall surface 2c of the side wall which is equivalent to the inner wall surface 2c. <P>COPYRIGHT: (C)2012,JPO&INPIT |
