Digital temperature measuring device and transformer oil temperature measuring system

The invention provides a digital temperature measuring device and a transformer oil temperature measuring system, and the device comprises a temperature bulb, a driving assembly, a control assembly, and an action assembly. The transformer oil temperature measuring system comprises a transformer and a digital temperature measuring device arranged on the transformer. The temperature bulb is in contact with transformer oil, and when the oil temperature of the transformer changes, the expansion medium in the temperature sensing probe drives the driving assembly through the driving capillary tube, so that the action assembly completes preset actions; under the power-off working condition, when the control assembly cannot directly control the action assembly to complete the preset action, the action assembly is made to complete the preset action in a mechanical transmission mode; when the action assembly cannot complete the preset action in a mechanical transmission mode, the control assembly can directly control t