JPS5514840A - Forced drainage - Google Patents

Forced drainage

Info

Publication number
JPS5514840A
JPS5514840A JP8662578A JP8662578A JPS5514840A JP S5514840 A JPS5514840 A JP S5514840A JP 8662578 A JP8662578 A JP 8662578A JP 8662578 A JP8662578 A JP 8662578A JP S5514840 A JPS5514840 A JP S5514840A
Authority
JP
Japan
Prior art keywords
pulsating flow
forced drainage
component
filter
flow detector
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.)
Granted
Application number
JP8662578A
Other languages
Japanese (ja)
Other versions
JPS6310230B2 (en
Inventor
Minoru Manabe
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co 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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP8662578A priority Critical patent/JPS5514840A/en
Publication of JPS5514840A publication Critical patent/JPS5514840A/en
Publication of JPS6310230B2 publication Critical patent/JPS6310230B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Prevention Of Electric Corrosion (AREA)

Abstract

PURPOSE: To prevent the malfunction by outside inflow pulsating flow, by equipping the filter for pulsating flow component removing at before and after pulsating flow detector in forced drainage used for electric corrosion protection etc. of underground tube.
CONSTITUTION: The active filter 13 decreasing the low region component and 360Hz component, is provided between the pulsating flow detector 8 and ripple voltage detecting point and forced drainage is made.
COPYRIGHT: (C)1980,JPO&Japio
JP8662578A 1978-07-14 1978-07-14 Forced drainage Granted JPS5514840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8662578A JPS5514840A (en) 1978-07-14 1978-07-14 Forced drainage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8662578A JPS5514840A (en) 1978-07-14 1978-07-14 Forced drainage

Publications (2)

Publication Number Publication Date
JPS5514840A true JPS5514840A (en) 1980-02-01
JPS6310230B2 JPS6310230B2 (en) 1988-03-04

Family

ID=13892198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8662578A Granted JPS5514840A (en) 1978-07-14 1978-07-14 Forced drainage

Country Status (1)

Country Link
JP (1) JPS5514840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009235535A (en) * 2008-03-28 2009-10-15 Jfe Engineering Corp Electric protection system for buried pipe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347434U (en) * 1989-09-14 1991-05-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009235535A (en) * 2008-03-28 2009-10-15 Jfe Engineering Corp Electric protection system for buried pipe

Also Published As

Publication number Publication date
JPS6310230B2 (en) 1988-03-04

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