Vacuum gas releasing system
AssigneeAsahi Glass Company, Limited
InventorsShigekuni Inoue, Kazuhiko Ishimura, Yusuke Takei, Kosei Uchino
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Abstract
The present invention provides a vacuum degassing system 10 having a leakage valve 48 installed between a condenser 46 and a vacuum pump 44, wherein even when the leakage valve 48 is opened, a vacuum degassing vessel 12 is not released to the atmosphere to thereby constantly maintain a temperature in the vacuum degassing vessel 12; and a large amount of volatile matters in the vacuum degassing vessel 12 are not discharged to a gas release pipe 34, whereby the vacuum degassing vessel 12 can be stably operated.
Claims16
A vacuum degassing system comprising:
- a vacuum degassing vessel for degassing high temperature molten matters;
- a vacuum pump for sucking a high temperature gas in said vacuum degassing vessel through a gas release pipe and depressurizing said vacuum degassing vessel when this pump is actuated, which vacuum pump is connected to said vacuum degassing vessel through said gas release pipe;
- a cooling device which cools the high temperature gas sucked from said vacuum degassing vessel by said vacuum pump, which cooling device is installed in said gas release pipe;
- a leakage valve for releasing said gas release pipe to the atmosphere by opening this valve, which leakage valve is attached to said gas release pipe positioned between said cooling device and said vacuum pump;
- and
- a control device for adjusting a degree of depressurizing of said vacuum degassing vessel by controlling an opening degree of said leakage valve and the revolutional number of said vacuum pump.
A vacuum degassing system comprising:
- a vacuum degassing vessel for degassing high temperature molten matters;
- a vacuum pump for sucking a high temperature gas in said vacuum degassing vessel through a gas release pipe and depressurizing said vacuum degassing vessel when this pump is actuated, which vacuum pump is connected to said vacuum degassing vessel through said gas release pipe;
- and
- a volatile matter removing device for removing volatile matters in the high temperature gas sucked from said vacuum degassing vessel by said vacuum pump, said volatile matter removing device being installed in said gas release pipe and including a casing having a inner space, a heat exchanging unit provided inside the inner space and a shield dividing the inner space into two compartment communicating at a lower portion of the shield.
A vacuum degassing system comprising:
- a vacuum degassing vessel for degassing high temperature molten matters;
- a vacuum pump for sucking a high temperature gas in said vacuum degassing vessel through a gas release pipe and depressurizing said vacuum degassing vessel when this pump is actuated, which vacuum pump is connected to said vacuum degassing vessel through said gas release pipe;
- a cooling device for cooling a high temperature gas sucked from said vacuum degassing vessel by said vacuum pump, which cooling device is installed in said gas release pipe;
- a leakage valve for releasing said gas release pipe to the atmosphere by opening, which leakage valve is attached to said gas release pipe positioned between said cooling device and said vacuum pump;
- a control device for adjusting a degree of depressurizing of said vacuum degassing vessel by controlling an opening degree of said leakage valve and the revolutional number of said vacuum pump;
- and
- a volatile matter removing device for removing volatile matters in the high temperature gas sucked from said vacuum degassing vessel by said vacuum pump, which volatile matter removing device is installed in said gas release pipe.
Dependencies are inferred from the claim text.