Online deep dynamic level-temperature measuring system for geothermal well

• Main Authors: LIN LI, SUN BAOCHENG, LI JUN, WANG GUANGHUI, WANG KUN, WANG YOUJUN, YU JIANSHUI, HAN JINSHU, ZHAO SUMIN, ZENG MEIXIANG, ZHANG YUEJU, GUO PENG, SUN SHIWEN, TIAN GUANGHUI, CHENG WANQING
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2011
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention relates to an online deep dynamic level-temperature measuring system for a geothermal well, a temperature sensor arranged in the geothermal well is connected as a singlechip. One end of a platinum nickel chrome ferroalloy wire arranged in the geothermal well is connected with a constant flow source while the other end thereof is connected with a digital to analog converter. The constant flow source is connected with a constant flow source switch time controller and the digital to analog converter and the constant flow source switch time controller are connected with the singlechip. The platinum nickel chrome ferroalloy wire has positive temperature coefficient and great thermal response speed. A constant flow is introduced to the platinum nickel chrome ferroalloy wire under control of the constant flow source switch time controller so that temperature change, resistance change and voltage variation in the upper and lower parts of the platinum nickel chrome ferroalloy wire are different because t