JPS5777918A - Method of and apparatus for preventing corrosion of instrument - Google Patents

Method of and apparatus for preventing corrosion of instrument

Info

Publication number
JPS5777918A
JPS5777918A JP15391480A JP15391480A JPS5777918A JP S5777918 A JPS5777918 A JP S5777918A JP 15391480 A JP15391480 A JP 15391480A JP 15391480 A JP15391480 A JP 15391480A JP S5777918 A JPS5777918 A JP S5777918A
Authority
JP
Japan
Prior art keywords
piping
instruments
instrument
sea water
water
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
JP15391480A
Other languages
Japanese (ja)
Inventor
Akio Sato
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 JP15391480A priority Critical patent/JPS5777918A/en
Publication of JPS5777918A publication Critical patent/JPS5777918A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Flowmeters (AREA)
  • Measuring Fluid Pressure (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)

Abstract

PURPOSE:To improve the reliability and the life of instruments through intermittent direct contact of instruments with sea water by discharging the sea water entering the instruments at a proper interval. CONSTITUTION:A main valve 3 of an instrument is connected to the instrument 5 by branching off a piping 7, which is provided with a fresh water injection valve 4. The fresh water is forced into the piping 7 with a means not illustrated. When the main valve 3 is closed whle the fresh water injection valve 4 is opened while no sea water enters a instrument detection piping 2, the frsh water comes into the piping 2 through the piping 7. Then, with the start of the operation, sea water flows into a sea water system piping 1 while entering the piping 2. At this point, with the opening of the main valve 3, the sea water in the piping 2 is pushed up by the pressure of the fresh water and sent into the piping 1. Therefore, the instruments comprising the instrument 5, the piping 2 and the like are mostly occupied by the fresh water. As the fresh water is very limited in the degree of corrosion against the instruments as compared with the sea water, corrosion of the instruments can be prevented.
JP15391480A 1980-11-04 1980-11-04 Method of and apparatus for preventing corrosion of instrument Pending JPS5777918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15391480A JPS5777918A (en) 1980-11-04 1980-11-04 Method of and apparatus for preventing corrosion of instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15391480A JPS5777918A (en) 1980-11-04 1980-11-04 Method of and apparatus for preventing corrosion of instrument

Publications (1)

Publication Number Publication Date
JPS5777918A true JPS5777918A (en) 1982-05-15

Family

ID=15572855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15391480A Pending JPS5777918A (en) 1980-11-04 1980-11-04 Method of and apparatus for preventing corrosion of instrument

Country Status (1)

Country Link
JP (1) JPS5777918A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6254136A (en) * 1985-08-26 1987-03-09 Sanyo Kokusaku Pulp Co Ltd Instrument for measuring liquid pressure in dissolving tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6254136A (en) * 1985-08-26 1987-03-09 Sanyo Kokusaku Pulp Co Ltd Instrument for measuring liquid pressure in dissolving tank

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