JPS57200800A - Alarm device for informing pipe breakage in conduit - Google Patents

Alarm device for informing pipe breakage in conduit

Info

Publication number
JPS57200800A
JPS57200800A JP8596581A JP8596581A JPS57200800A JP S57200800 A JPS57200800 A JP S57200800A JP 8596581 A JP8596581 A JP 8596581A JP 8596581 A JP8596581 A JP 8596581A JP S57200800 A JPS57200800 A JP S57200800A
Authority
JP
Japan
Prior art keywords
flow rate
water
pressure
value
generation
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
JP8596581A
Other languages
Japanese (ja)
Other versions
JPH0115760B2 (en
Inventor
Michio Fukuda
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8596581A priority Critical patent/JPS57200800A/en
Publication of JPS57200800A publication Critical patent/JPS57200800A/en
Publication of JPH0115760B2 publication Critical patent/JPH0115760B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipeline Systems (AREA)

Abstract

PURPOSE:To make it possible to prevent the non-generation of an alarm signal or the generation of an erroneous alarm signal by a method wherein a reference value regarding the variation of the flow rate of water flowing through the water pipe or a reference value regarding the variation of pressure of the water is made itself a function of the actual flow rate of the water or of the actual pressure of the water. CONSTITUTION:The flow rate of water in the pipe 1 is detected by a flow rate detector 2, the output of the detector 2 is inputted to a sampling device 4 through a flow rate converter 3 and the output of the sampling device 4 is inputted to a comparison and discrimination device 6 as an output Q2. Further, a flow rate signal Q1 at the present time is inputted to the comparison and discrimination device 6 where the value of (Q1-Q2) is operated and whether or not the value exceeds a predetermined positive value (which is the output of a setting value operating device 13) is determined. At the same time, a pressure transmitting device 8 is in the process of detecting the pressure of the water in the pipe 1 while the flow rate detector 2 detects the flow rate of the water and determines whether or not the detected value exceeds a predetermined negative pressure value. Accordingly, the above mentioned reference value is the actual flow rate or pressure so that the non-generation of the alarm signal or the generation of the erroneous signal is prevented.
JP8596581A 1981-06-04 1981-06-04 Alarm device for informing pipe breakage in conduit Granted JPS57200800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8596581A JPS57200800A (en) 1981-06-04 1981-06-04 Alarm device for informing pipe breakage in conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8596581A JPS57200800A (en) 1981-06-04 1981-06-04 Alarm device for informing pipe breakage in conduit

Publications (2)

Publication Number Publication Date
JPS57200800A true JPS57200800A (en) 1982-12-09
JPH0115760B2 JPH0115760B2 (en) 1989-03-20

Family

ID=13873443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8596581A Granted JPS57200800A (en) 1981-06-04 1981-06-04 Alarm device for informing pipe breakage in conduit

Country Status (1)

Country Link
JP (1) JPS57200800A (en)

Also Published As

Publication number Publication date
JPH0115760B2 (en) 1989-03-20

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