Air pre-cooler cleaning system and control method

The invention relates to the technical field of air treatment, and particularly discloses an air pre-cooler cleaning system and a control method.The air pre-cooler cleaning system comprises a pre-cooler blowback system and a bypass system, and a first valve assembly, a second valve assembly and a third valve assembly on the pre-cooler blowback system are controlled; the circulating path of the compressed air can be adjusted through the bypass system and the on-off of the fourth valve assembly on the bypass system, and the compressed air can be released from the emptying pipeline after sequentially passing through the bypass system, the downstream purging pipeline and the pre-cooler from the upstream working section, so that the purging and cleaning processes of the pre-cooler are completed, the problem that an internal pipeline of the pre-cooler is blocked is avoided, and the service life of the pre-cooler is prolonged. And the front and back pressure difference of the pre-cooler is reduced, so that the norma