| In this paper, several key technique related to the exploitation and design of the direct current electromagnetic pump with great flux are studied; In order to prove the feasibility of the direct current electromagnetic pump with great flux, the simulative experiment are proceeded. Based on the I-B relation experiments of the different magnetism-collected structure parameter electromagnets and the analysis on the experimental data, a experienced formula is obtained, which can calculate the intensity of magnetization in magnetic gap of separate electromagnet with the magnetism-collected structure. Applying the theory on hydrodynamics and combining the structure of the pump, the method of calculating the flux is found, using the simulating dual pump which mercury serve as the working medium, by the experiment on the electromagnet used in the dual pump, the optimum method of the coil connection is gained; by the experiment on the relation the static pressure and the working parameter in different groove structure, a high-efficiency groove structure named as " + " shape are devised; by comparing the static pressure and flux between single pump and dual pump, the conclusion that the flux of dual pump is about 1. 6 times as much as the flux of single pump is educed, and prove it practical that the dual pump is adopted to increase the flux. The above results can afford a valuable reference for the structure design of the electromagnetic pump with great flux. |