Variable pressure difference control device based on openness of chilled water valve of tail-end air conditioning equipment

The utility model discloses a variable pressure difference control device based on the openness of a chilled water valve of tail-end air conditioning equipment. The variable pressure difference control device comprises an industrial computer, an intelligent controller, a frequency converter, a sensor and a chilled water pump. The intelligent controller is connected with an outdoor temperature sensor, an indoor temperature sensor and a temperature sensor arranged on the tail-end equipment and is further connected with a pressure difference sensor arranged on the tail-end equipment to collect data. A temperature sensor, a pressure sensor and a flow sensor are arranged at a supply water and return water opening of the chilled water pump and are connected with the intelligent controller to feed back supply water and return water temperature, pressure and flow of the chilled water pump to the intelligent controller. The sensors can send work condition parameter data to the industrial computer through a TCP/IP protocol. The frequency converter is arranged on the chilled water pump, and operation of the chilled water pump can be controlled by the frequency converter according to instructions sent by the intelligent controller. The variable pressure difference control device has the advantages of being compact in structure and good in energy conservation effect.