Condenser for indirect air-cooling high-back-pressure heat supply system

The utility model discloses a condenser for an indirect air-cooling high-back-pressure heat supply system. The condenser comprises a square main shell and a connecting neck, wherein a heat exchange chamber is formed at the inner bottom of the square main shell; the connecting neck is positioned at the top of the square main shell and is connected with a steam exhaust outlet of a steam turbine; one end of the heat exchange chamber is provided with a cooling water outlet and a cooling water inlet, and the other end is provided with a return water chamber; the connecting neck is in an inverted square cone shape, a through hole is formed in the side face, on the same side as the return water chamber, of the connecting neck, and a dead steam outlet pipe used for outputting dead steam of a steam turbine entering the condenser is connected along the through hole in a sealed welding mode. After the modified condenser is used, the technical purpose of recycling waste heat of dead steam exhausted by a steam turbine is