Chilled water temperature difference control method and device, computer equipment and storage medium

The invention discloses a chilled water temperature difference control method and device, computer equipment and a storage medium. The method comprises the steps that the temperature difference between outlet water and return water of chilled water of a cooling tower is detected, a first water temperature difference is obtained, the operation frequency of a host water pump in the cooling tower is adjusted based on the change of the first water temperature difference, and the first water temperature difference is kept within a first preset water temperature difference range; detecting the chilled water temperature difference between the interlayer water supply pipe and the interlayer water return pipe to obtain a second water temperature difference, and adjusting the opening degree of an interlayer valve between the interlayer water supply pipe and the interlayer water return pipe based on the change of the second water temperature difference to maintain the second water temperature difference within a second