WATER LEVEL AND TEMPERATURE MEASURING DEVICE AND WATER LEVEL TEMPERATURE MEASUREMENT SYSTEM

• Main Authors: TSUJI TAKAHIRO, KAGIFUKU TATSUO, TSURUTA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 17.11.2014
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

PROBLEM TO BE SOLVED: To measure a water level and a water temperature of retained water and an atmospheric temperature of a place with bad environmental condition for measurement such as the inside of a nuclear reactor containment after an accident.SOLUTION: In a water level and temperature measuring device provided with a plurality of composite sensors 20 and measuring a water level and a temperature of an object domain, each of the plurality of composite sensors 20 includes: an electrode type water level sensor 30 having an interpole insulator 34 and two electrodes 31, 32 disposed via the interpole insulator 34, and detecting whether or not the electrodes are in a submerged state; and a temperature sensor 40 for measuring a temperature at a position of the electrode type water level sensor 30. The plurality of composite sensors 20 are arranged at spaces from one another in series along a longitudinal direction. The power source voltages of the electrodes of the electrode type water level sensor 30 may periodically change in polarity. 【課題】事故後の原子炉格納容器内のような計測上の環境条件の良くない場所の滞留水の水位および水温、雰囲気温度を測定する。【解決手段】実施形態によれば、複数の複合センサ２０を備え対象領域の水位および温度を計測する水位・温度計測装置において、複数の複合センサ２０はそれぞれ、極間絶縁体３４およびその極間絶縁体３４を介して配設された２つの電極３１、３２を有して水没状態にあるか否かを検出する電極式水位センサ３０と、電極式水位センサ３０の位置における温度を計測する温度センサ４０とを有する。複数の複合センサ２０は互いに間隔をあけて長手方向に直列に配されている。電極式水位センサ３０の電極の電源電圧は、周期的に極性が変化することでもよい。【選択図】図３