Embedded composite heat supply system and device capable of increasing waste heat of vacuum and condensed water

The invention discloses an embedded composite heat supply system and device capable of increasing waste heat of vacuum and condensed water. The device comprises a turbine low-pressure cylinder, the turbine low-pressure cylinder is connected with an injection type condenser, an exhaust pipeline is arranged on the turbine low-pressure cylinder and connected with an air-cooling condenser, cooling mixed devices are arranged in the exhaust pipeline and a steam distribution pipeline of the air-cooling condenser, the air-cooling condenser is connected with a condensation water tank and an air exhaust device, the condensation water tank is connected with a circulation condensation water collecting tank, the circulation condensation water collecting tank is connected with the air exhaust device, the air exhaust device is connected with an electric drive compression refrigeration system, the electric drive compression refrigeration system is connected with a photovoltaic auxiliary combined power supply device, the circulation condensation water collecting tank, a dry-type air cooler system and the electric drive compression refrigeration system are annularly connected, and the dry-type air cooler system is communicated with a pipeline between the electric drive compression refrigeration system and the circulation condensation water collecting tank.