| 摘要 |
<p>A measuring apparatus based on the flowing of liquid, gas or other similar medium, comprising a flow pipe (41), a rotor (42) placed therein and means for adjusting the flowing within the flow pipe (45, 47). The rotor axis is parallel to the main flowing direction of the medium. For measuring variables of the medium, such as heat, content etc., it has been necessary to change the rotor blade angle for example according to the temperature of the liquid to be measured. In this case, however, the rotor structure becomes heavy and the shifting of the blade angle cannot be carried out with satisfactory accuracy. This problem is solved by causing the medium to flow in a spiralling, screw-shaped or similar fashion. The movement can be expanded or contracted according to the variable to be measured, for instance according to changes in the temperature. Thus the rotor blades can be steadily installed and even straight-shaped. Now also the axial loading of the rotor can be avoided.</p> |
