Multi-channel automatic ammonia adding device

The utility model discloses a multi-channel automatic ammonification device. When one closed water ammonia adding pump needs to be used for closed water ammonia adding of a plurality of units, an ammonia adding pump outlet manual door or an ammonia adding pump outlet electric door needs to be frequently and manually switched among a plurality of ammonia adding channels, meanwhile, the ammonia adding pump is manually controlled to be started and stopped, and the situation that closed water ammonia adding is not in time or ammonia adding is excessive easily occurs; and as the closed water ammonification pump is not provided with a standby pump, when only one closed water ammonification pump breaks down, the closed water cannot be ammoniated. The device is applied to the technical field of thermal power plant condensed water and feed water ammonification. The multichannel automatic ammonia adding device comprises a central control computer, the central control computer is respectively connected with an ammonia b