Matching short section

The utility model discloses a matched short section which comprises a short section body which is sleeved with flow collecting umbrella cloth, and the flow collecting umbrella cloth is provided with at least one opening. The multiple supporting structures are connected to the short section body in a sleeving mode, the upper portions of the multiple supporting structures are connected with the flowcollecting umbrella cloth, and the lower portions of the multiple supporting structures are connected with the short section body in a pivoted mode; the at least one driving piece is connected to theshort section body, each driving piece and the corresponding opening are axially and oppositely arranged, and the driving pieces can drive the multiple supporting structures to be unfolded or folded;and under the state that the plurality of supporting structures are opened, the flow collecting umbrella cloth is opened outwards in the radial direction. According to the matched short section, testliquid is collected through