Fluid parameter measurement device with annular gap

A fluid parameter measurement device with an annular gap, comprising:

• a base platform,
• a core column, and
• a swing block,
• wherein two side walls are arranged at the base platform, and two ends of the core column are fixedly connected to the side walls, respectively;
• a rotating shaft is arranged between the two side walls, and the rotating shaft is parallel to an axis of the core column;
• the swing block is connected to the base platform via the rotating shaft, and a through hole is disposed on the swing block;
• the core column is arranged inside the through hole in a penetration manner, the core column and two ends of the through hole are sealed with elastic sealing rings, and a surface of the core column and an inner wall of the through hole form an annular gap;
• a fluid inlet channel and a fluid outlet channel are disposed at the core column, the fluid inlet channel and the fluid outlet channel are in communication with two ends of the annular gap, respectively, and a pressurized liquid enters the annular gap through the fluid inlet channel and flows out of the fluid outlet channel;
• an adjustment assembly is arranged at the base platform, and the adjustment assembly pushes the swing block to rotate to alter a concentric degree between the surface of the core column and the inner wall of the through hole;
• an annular gap segment is arranged at the core column, a surface of the annular gap segment and the inner wall of the through hole form the annular gap, and a fluid inlet annular groove and a fluid outlet annular groove are disposed at two ends of the annular gap segment;
• and a plurality of fluid inlet openings in communication with the fluid inlet channel are disposed at a circumferential direction of the fluid inlet annular groove, and a plurality of fluid outlet openings are disposed at a circumferential direction of the fluid outlet annular groove.