Method for controlling vacuum pump of deoxidation system

Abstract

Abstract PURPOSE:To decrease the noises occurring in the cavitation phenomenon generated in the water sealed vacuum pump which operaters in association with the flowing water detection in a feed water time of the deoxidation system for cold and hot apparatus as well as the loss of the pump driving power by controlling the driving of the above-mentioned pump. CONSTITUTION:The flow in the feed water line 3 is detected by a flow switch 6 and the water sealed vacuum pump 7 is driven in response with the detection output signal thereof; in addition, a 1st solenoid valve 11 provided in a sealing water supply line 8 and a 2nd solenoid valve 13 provided in a deaeration line 9 connecting a deoxidation module 5 and the water sealed vacuum pump 7 are opened. The outputting of the output signal of the flow switch 6 is so controlled as to open the 1st solenoid valve 11 upon lapse of delay time after the 2nd solenoid valve 13 is opened by a controller 12. The excess flow of the sealing water into the water sealed vacuum pump at the time of restarting is, therefore, prohibited and the noises occurring in the cavitation at the time of the excess flow-in of the sealing water and the loss of the pump driving power are decreased.

Inventors

• 👤 Yasutoshi Senoo
• 👤 泰利 妹尾
• 👤 Yasuo Ochi
• 👤 康夫 越智

Bibliographic Details