CLEANING METHOD OF SENSOR AND DRAINAGE DEVICE

Japanese Patent JP2017133201

A

PROBLEM TO BE SOLVED: To provide a cleaning method of a sensor capable of easily cleaning the sensor in a storage pipe for storing the sensor, in a drainage device for draining water from a water storage basin.SOLUTION: A drainage device 1 comprises a drainage pump 2 for draining water from a water storage basin X, a storage pipe 4 formed in a tubular shape, having an opening part in one end part and arranged in the water storage basin X so that the one end part is positioned downward in a state of storing the sensor 3, a first flow passage 5 for flowing the water from the drainage pump 2, a second flow passage 6 for discharging the water from the first flow passage 5 to the outside of the water storage basin X, a third flow passage 7 connected to the storage pipe 4 in an upper position than a first water level W1 and supplying the water from the first flow passage 5 in the storage pipe and a three-way valve 8 for connecting the first flow passage 5, the second flow passage 6 and the third flow passage 7, and the drainage device is cleaned by discharging the water from the drainage pump 2 in the storage pipe 4 by communicating the first flow passage 5 and the third flow passage 7 by switching of the three-way valve 8 when a water level of the water storage basin X becomes a second water level W2.SELECTED DRAWING: Figure 1

IMAOKA KUNIAKI

JP2016012517A

August 03, 2017

January 26, 2016

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CHUGOKU ELECTRIC POWER CO INC

E03F5/02; E03F5/22; G01F23/24

Noboru Fujimoto
Hiroaki Nakatani
Akira Kitada

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