Series series unit one-time installation multi-section hydraulic fracturing device and working method

The invention provides a series series unit one-time installation multi-section hydraulic fracturing device and a working method, and belongs to the technical field of coal mine underground hydraulic fracturing. Comprising a high-pressure pipe column arranged in a drill hole, multiple sets of fracturing units are arranged on the high-pressure pipe column at intervals and comprise hole packers, hole packer high-pressure rubber pipes are arranged between the multiple sets of fracturing units and the hole packers in a series connection mode, and fracturing flow metering control switches are arranged on the high-pressure pipe column between the multiple sets of fracturing units and the hole packers; the hydraulic fracturing device is easy to operate, environmentally friendly, low in labor intensity of workers, high in hydraulic fracturing efficiency and dense in hydraulic fracturing cracks, and the effect of dense hydraulic fracturing through single-time installation can be achieved. 本发明提出一种串联系列单元一次安装多段水力致裂装置及工作方