EFFICIENT AND FLEXIBLE HEAT SUPPLY AND POWER GENERATION SYSTEM CAPABLE OF REALIZING ENERGY CASCADE RECYCLING AND UTILIZATION

Disclosed is an efficient and flexible heat supply and power generation system capable of realizing energy cascade recycling and utilization, which includes an intermediate pressure cylinder, a low pressure cylinder, a condenser, a first heat exchanger and a first heat exchange pipe. Steam at a steam exhaust port of the intermediate pressure cylinder is divided into two branches, one branch enters the low pressure cylinder, and the other branch enters the first heat exchanger for heat exchange and then enters the condenser; steam from the steam exhaust port of the low pressure cylinder enters the condenser, and the first heat exchange pipe is arranged in the condenser. Heat supply return water enters the first heat exchanger after heat exchange through the first heat exchange pipe, and forms heat supply water after heat exchange in the first heat exchanger. The technical effects of the present application are as follows. The heat supply return water is initially heated through the first heat exchange pipe, and then enters the first heat exchanger to be reheated to form the heat supply water. The energy utilization rate is higher. In addition, after part of steam discharged from the intermediate pressure cylinder passes through the first heat exchanger, the temperature of the steam is still high. The steam is introduced into the condenser for primarily heating the heat supply return water, which can make deep use of residual heat, thus realizing energy-saving heat supply.