Blast furnace cooling water temperature detection sensor

The utility model discloses a blast furnace cooling water temperature detection sensor which comprises a sensor body and an interface, the interface is arranged on the sensor body, an alarm box is arranged on the sensor body, a buzzer is arranged on the alarm box, a battery and a control module are arranged in the alarm box, a protection piece is connected to the interface in a sliding mode, and a universal ball is arranged in the protection piece. The buzzer in the alarm box on the sensor can give out harsh buzzing sound under the condition that the power of the sensor is cut off by mistake by a maintainer so as to achieve an alarm effect, so that the maintainer can know the situation in the first time and rush to the field for maintenance, the service life of a connecting wire can be prolonged and protected through the protection piece on the interface, and the service life of the connecting wire is prolonged. And under non-subjective collision, compared with a traditional connection mode, the service life