JPS5658650A - Detecting device for freezing - Google Patents

Detecting device for freezing

Info

Publication number
JPS5658650A
JPS5658650A JP13580879A JP13580879A JPS5658650A JP S5658650 A JPS5658650 A JP S5658650A JP 13580879 A JP13580879 A JP 13580879A JP 13580879 A JP13580879 A JP 13580879A JP S5658650 A JPS5658650 A JP S5658650A
Authority
JP
Japan
Prior art keywords
resistor
protecting pipe
voltage
freezing
cooling
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
JP13580879A
Other languages
Japanese (ja)
Inventor
Kojiro Sakiyama
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.)
ASAHI PLANT KOGYO KK
TSURUGA DENKI SEISAKUSHO KK
Original Assignee
ASAHI PLANT KOGYO KK
TSURUGA DENKI SEISAKUSHO KK
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 ASAHI PLANT KOGYO KK, TSURUGA DENKI SEISAKUSHO KK filed Critical ASAHI PLANT KOGYO KK
Priority to JP13580879A priority Critical patent/JPS5658650A/en
Publication of JPS5658650A publication Critical patent/JPS5658650A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To detect the freezing of a protecting pipe by a method wherein a resistor with a large thermal coefficient is arranged in the protecting pipe, the latter is fitted in a cooling water tank and the change in the terminal voltage of the resistor when being electrified from a constant-current source is measured.
CONSTITUTION: A freezing-detecting element 4 is formed by arranging the resistor 7 having a large thermal coefficient and being superior in the corrosion resistance, such as Ni and Pt, within the metal protecting pipe 6 and this element is arranged in the cooling water 2 in the cooling-water tank 1 nearly in parallel to a cooling pipe 3 which returns back a coolant (the sign 5 is a cooled part). Then, the resistor 7 of the element 4 is electrified from the constant current source and the voltage between both ends thereof is measured, while the voltage V1 just after the electrification is subtracted from the voltage V2 after the passage of a prescribed time T. When the value is lower than the set value, the inside of the protecting pipe 6 is determined to be frozen. In addition, the above set time T is set at a value shorter than that required for the melting of the whole ice when the entire part inside the protecting pipe is frozen and the electrification is applied thereto.
COPYRIGHT: (C)1981,JPO&Japio
JP13580879A 1979-10-19 1979-10-19 Detecting device for freezing Pending JPS5658650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13580879A JPS5658650A (en) 1979-10-19 1979-10-19 Detecting device for freezing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13580879A JPS5658650A (en) 1979-10-19 1979-10-19 Detecting device for freezing

Publications (1)

Publication Number Publication Date
JPS5658650A true JPS5658650A (en) 1981-05-21

Family

ID=15160298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13580879A Pending JPS5658650A (en) 1979-10-19 1979-10-19 Detecting device for freezing

Country Status (1)

Country Link
JP (1) JPS5658650A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013108702A1 (en) * 2012-01-17 2013-07-25 株式会社テックスイージー Freezing detection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013108702A1 (en) * 2012-01-17 2013-07-25 株式会社テックスイージー Freezing detection device
JP2013148399A (en) * 2012-01-17 2013-08-01 Tekkusu Iijii:Kk Freezing detection apparatus
US9897367B2 (en) 2012-01-17 2018-02-20 Tex E.G. Co., Ltd. Freezing detection device

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