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Title:
PRESSURE BOOSTER FOR NITROGEN GAS
Document Type and Number:
Japanese Patent JP3792000
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To prevent a decrease in the purity of nitrogen gas due to a leak of compressed air, in a pressure booster of nitrogen gas intensifying a pressure of nitrogen gas by compressed air.
SOLUTION: An intermediate chamber 36 between rod packing 35a sealing a rod 35 inserted through a center body 22, an intermediate chamber 68 in a pilot valve 47B for switching a switch valve 28, and an intermediate chamber 85 in a governor 29 for adjusting a secondary pressure of nitrogen gas, are respectively provided. These intermediate chambers are opened respectively to the outside by a passage, and compressed air leaking to a booster chamber side from a drive chamber side and nitrogen gas leaking to the drive chamber side from the booster chamber side are discharged to the outside by these intermediate chambers.


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Inventors:
森 田 英 夫
深 町 孝 一
山 地 幹 夫
Application Number:
JP1997000090147
Publication Date:
June 28, 2006
Filing Date:
March 25, 1997
Export Citation:
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Assignee:
SMC株式会社
International Classes:
F15B3/00; (IPC1-7): F15B3/00
Domestic Patent References:
JP60143176U
JP63310318A
JP4059379U
JP5044632A
JP55153873A
JP60043184A
JP4822483B2
JP63102976U
Attorney, Agent or Firm:
林 宏
内山 正雄