Title:
METHOD OF OPENING LARGE-CAPACITY VACUUM RECEPTACLE TO AIR
Document Type and Number:
Japanese Patent JPS6049196
Kind Code:
A
Abstract:
PURPOSE:To reduce noise produced by opening to the air by supplying pressurized air to a vacuum receptacle to increase the pressure in the receptacle more than the atmospheric pressure in a method of changing the internal pressure of the vacuum receptacle from the vacuum state to the atmospheric pressure state. CONSTITUTION:An air compressor 5 is operated to send compressed air to a pressure accumulator 4, so that the pressure in the pressure accumulator 4 is increased up to a fixed pressure P. At the time of opening a vacuum receptacle to the air, the first valve 3 is opened so that high-pressure air in the pressure accumulator 4 is caused to flow into the vacuum receptacle 1. In a little while, the pressure in the receptacle 1 amounts more than the atmospheric pressure. After that, the second valve 6 is opened to emit surplus pressure in the vacuum receptacle 1 to the air, which results in that the pressure in the vacuum receptacle 1 is atmospheric pressure.
Inventors:
OOTAKE IKUO
Application Number:
JP15722283A
Publication Date:
March 18, 1985
Filing Date:
August 30, 1983
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F17C5/00; B01J3/00; F16J12/00; F17C13/00; (IPC1-7): F16J12/00; F17C5/00; F17C13/00
Attorney, Agent or Firm:
Yukio Harada