JPS571945A - Detecting method for underground leakage of water - Google Patents

Detecting method for underground leakage of water

Info

Publication number
JPS571945A
JPS571945A JP7596680A JP7596680A JPS571945A JP S571945 A JPS571945 A JP S571945A JP 7596680 A JP7596680 A JP 7596680A JP 7596680 A JP7596680 A JP 7596680A JP S571945 A JPS571945 A JP S571945A
Authority
JP
Japan
Prior art keywords
water
leaking
pressure
sound
section
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
JP7596680A
Other languages
Japanese (ja)
Inventor
Michi Yagiyuu
Yoshio Endo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7596680A priority Critical patent/JPS571945A/en
Publication of JPS571945A publication Critical patent/JPS571945A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

PURPOSE:To enable the leaking point of the water to be detected even in the daytime, by blocking the section-to-be-checked in the under-ground waterpiping, applying externally controllable water pressure, and increasing the water leaking sound from the water leaking point. CONSTITUTION:A leaking sound detector 1 is placed on the ground 2. The water leaking point 4 of the underground waterpipe 3 is detected by the leaking sound of the jetting water. In detecting the leaking, valves 7 and 8 are closed in order to block the section 3 to be checked in the buried distributing waterpipe. Thereafter, a first branching valve 11 is opened, and a pump 10 is started by a power source 13. When the output water pressure becomes larger than the normal distributing pressure, a second branching valve 12 is opened, and the water enters into the blocked section. Then, the pressure of the jetting water from the leaking point increases. Therefore the leaking sound, which is sufficiently louder than the underground noises, can be detected.
JP7596680A 1980-06-05 1980-06-05 Detecting method for underground leakage of water Pending JPS571945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7596680A JPS571945A (en) 1980-06-05 1980-06-05 Detecting method for underground leakage of water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7596680A JPS571945A (en) 1980-06-05 1980-06-05 Detecting method for underground leakage of water

Publications (1)

Publication Number Publication Date
JPS571945A true JPS571945A (en) 1982-01-07

Family

ID=13591466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7596680A Pending JPS571945A (en) 1980-06-05 1980-06-05 Detecting method for underground leakage of water

Country Status (1)

Country Link
JP (1) JPS571945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104712874A (en) * 2013-12-13 2015-06-17 中国石油天然气集团公司 Buried natural gas pipeline earth-surface overflowing drainage cover and application method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150780A (en) * 1974-10-30 1976-05-04 Densoku Kogyo Kk KATOSEIMIT SUPUYOKINO PINHOORUKENSAHOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5150780A (en) * 1974-10-30 1976-05-04 Densoku Kogyo Kk KATOSEIMIT SUPUYOKINO PINHOORUKENSAHOHO

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104712874A (en) * 2013-12-13 2015-06-17 中国石油天然气集团公司 Buried natural gas pipeline earth-surface overflowing drainage cover and application method

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