Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Means responsive to abnormal condition completely stop...
Patent
1989-07-20
1991-01-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Means responsive to abnormal condition completely stop...
419 49, 419 57, 425 78, 425149, 425151, 425153, 425161, 4254052, B22F 314
Patent
active
049831127
ABSTRACT:
An interlocking device for a HIP equipment that prevents possible damage to the HIP equipment arising from use of a furnace or processing gas in error and can control the oxygen concentration and pressure within the HIP equipment. The device includes a sensor for detecting a concentration of oxygen in the processing gas in a processing gas pipe system. If the sensor detects an excessively high oxygen concentration, a supply side interlocking mechanism closes a valve for the pipe system and disconnects a power source for a furnace in a high pressure vessel. A flow switch is connected to a safety pipe system having a safety device, and a thermocouple is provided for each of the safety and processing gas pipe systems and a relief pipe system. When the flow switch detects processing gas being spouted from the safety pipe system and/or when one of the temperature signals from the thermocouples exceeds a preset value, a relief side interlocking mechanism closes the processing gas pipe system, opens the relief pipe system, stops a gas compressor and disconnects the power source.
REFERENCES:
patent: 4032337 (1977-06-01), Boyer
patent: 4756680 (1988-07-01), Ishii
"Metall", 39, edition 10, Oct. 1985, pp. 968-971.
Asea, Vasteras, Sweden, nr. 6735, p. 13.
Fujikawa Takao
Ishii Takahiko
Kanda Kuniaki
Narukawa Yutaka
Uehara Katsuhiro
Kabushiki Kaisha Kobe Seiko Sho
Mackey James P.
Woo Jay H.
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