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JPS55151185A - Shaft sealing oil feeding apparatus - Google Patents

Shaft sealing oil feeding apparatus

Info

Publication number
JPS55151185A
JPS55151185A JP5805879A JP5805879A JPS55151185A JP S55151185 A JPS55151185 A JP S55151185A JP 5805879 A JP5805879 A JP 5805879A JP 5805879 A JP5805879 A JP 5805879A JP S55151185 A JPS55151185 A JP S55151185A
Authority
JP
Japan
Prior art keywords
pressure
sealing oil
pump
switch
sealing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5805879A
Other languages
Japanese (ja)
Inventor
Yoshio Takigawa
Hiroshi Matsumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5805879A priority Critical patent/JPS55151185A/en
Publication of JPS55151185A publication Critical patent/JPS55151185A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

PURPOSE: To improve reliability in the operation of a shaft sealing oil feeding apparatus, by quickening the operation of a pressure switch in case that operation of a normally used, sealing oil pump is stopped, starting operation of an emergency sealing oil pump promptly, and thereby preventing leakage at the shaft sealing portions.
CONSTITUTION: In case that operation of normally used, sealing oil pump 2 is stopped, pressure at an oil pressure detecting portion of pressure switch 5, disposed at an intermediate portion between pump 2 and orifice 14a, is dropped rapidly by the function of orifice 14a having an appropriate size and branch pipe 16 connected to vacuum oil tank 1, which are both disposed on the outlet side of pump 2, so as to quicken the operation of pressure switch 5 and to start emergency sealing oil pump 3 promptly. Resultantly, it is enabled to obtain or keep sealing oil pressure necessary for preventing leakage of hydrogen gas from portions of a fixed member where a shaft is extended through, and thus to prevent leakage of hydrogen gas and damages of pressure switch 5 due to pulsation of oil pressure, with no need of raising the operation pressure of switch 5 to the normal sealing oil pressure.
COPYRIGHT: (C)1980,JPO&Japio
JP5805879A 1979-05-14 1979-05-14 Shaft sealing oil feeding apparatus Pending JPS55151185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5805879A JPS55151185A (en) 1979-05-14 1979-05-14 Shaft sealing oil feeding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5805879A JPS55151185A (en) 1979-05-14 1979-05-14 Shaft sealing oil feeding apparatus

Publications (1)

Publication Number Publication Date
JPS55151185A true JPS55151185A (en) 1980-11-25

Family

ID=13073303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5805879A Pending JPS55151185A (en) 1979-05-14 1979-05-14 Shaft sealing oil feeding apparatus

Country Status (1)

Country Link
JP (1) JPS55151185A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108331742A (en) * 2017-05-10 2018-07-27 浙江飞越机电有限公司 One kind vacuumizing detecting and controlling system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108331742A (en) * 2017-05-10 2018-07-27 浙江飞越机电有限公司 One kind vacuumizing detecting and controlling system and method

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