Quick switch-off device for leakage faults of heating power stations

The utility model provides a quick switch-off device for leakage faults of heating power stations, which is mainly applied to unattended and remote-controlled heating power stations. The quick switch-off device for leakage faults of the heating power stations quickly and immediately switches off a water supply and water return system when leakage faults happen by mainly utilizing a humiture switch to sense external temperature and humidity and automatically control switch state of a switch-off valve of the water supply and water return system. By adopting the switch-off device, when leakage faults of the heating power stations happen, heat and flow lost in one-time net pipelines are reduced to the lowest value, simultaneously reserved time for maintenance workers is prolonged, and danger for the maintenance workers is reduced, thereby enabling remote control from heat companies to the heating power stations to be more convenient and more effective.