Novel energy supply electricity and heat cogeneration system for substituting oil and gas gathering and transporting production process transfer station

The invention relates to an oil and gas gathering and transporting electricity and heat cogeneration system for substituting a heating furnace by utilizing a boiler, a backpressure type turbine and a heat exchange device and aims at mainly solving the problem that achieve energy gradient utilization cannot be achieved by adopting an existing single heating furnace and the exergetic efficiency is low in the oil and gas gathering and transporting process. The technical scheme is that the oil and gas gathering and transporting electricity and heat cogeneration system for substituting the heating furnace by utilizing the boiler, the backpressure type turbine and the heat exchange device comprises a boiler device, the backpressure type turbine, a generator, the heat exchange device and a water feed pump.