The utility model relates to a take temperature element's collecting ring of collecting ring temperature in the time of can monitoring the hydroelectric set operation comprises collecting ring (1), insulation fixing plate (2), temperature probe (3), installation disk (4), temperature measurement lead wire (5), insulating clamp plate (6), bolt (7), diplopore retainer mat (8). The collecting ring of this structure can be fixed temperature element on the collecting ring convenient and reliablely, monitors the collecting ring temperature when the unit move, conveniently assesss collecting ring temperature rise index, provides technical support for the unit safety steady operation.