Combined heat and power generation PLC control device

The utility model belongs to the technical field of combined heat and power generation, and provides a combined heat and power generation control device aiming at the problem of excessive waste of heat energy during conveying of condensed water during hot-spot heating, which comprises a settling tank, a steam-water mixing device, a water treatment system and a water heating device, one end of thesettling tank is sequentially connected with a water return pipe I, a water return pump and a water return pipe II; the water return pipe II is communicated with the steam-water mixing device; a condensation return pipe filled with reflux condensed water is communicated with the steam-water mixing device; a first water inlet pipe, a water inlet pump and a second water inlet pipe are sequentially communicated between the steam-water mixing device and the water treatment system, the second water inlet pipe penetrates through the water inlet hole to be communicated with the water treatment system, a water outlet of the w