The invention provides an impulse type sand fracturing
system and a control method thereof. The impulse type sand fracturing
system comprises a sand hopper arranged on a fracturing blender
truck, a fracturing
liquid tank, a sand-liquid mixing cylinder and a fracturing pump car group. A supporting agent circulation loop is connected in parallel to a pipeline between the sand hopper and the sand-liquid mixing cylinder. A flow-direction converting device is arranged at the front end of the supporting agent circulation loop. The
tail end of the supporting agent circulation loop is connected with the sand hopper. The impulse type sand fracturing
system further comprises a control device which comprises a
user input-output end, a PLC, a flow direction converting driver, a circulation feedback driver and a linkage
butterfly valve driver. An existing conventional fracturing blender
truck is used as a foundation platform, supporting agent double-way feeding control, supporting agent circulation control and fracturing liquid and sand carrying liquid impulse adding control are integrated, seamless connecting with an existing sand tank, the fracturing blender
truck, the fracturing pump car group and a
liquid tank group can be achieved, impulse type injection of fracturing liquid and sand carrying liquid is achieved, sand
cluster type supporting of supporting agents in a crack is achieved, and the flow
conductivity of the crack is improved.