Turbine wheel meter
A turbine wheel meter for measuring the flow rate of a liquid, in particular water, is disclosed, with a measuring device, with an inlet and an outlet for the liquid to be measured, with a flow channel provided between the inlet and outlet, and with a turbine that has a turbine wheel with curved blades positioned in the flow channel, and wherein the turbine wheel cooperates with the measuring device to measure the flow rate of the liquid. A lower pressure loss and a high measurement sensitivity are achieved by embodying the turbine as a radial turbine with single-curved blades on the turbine wheel.
1. A turbine wheel meter for measuring a flow rate of a liquid, comprising:
a measuring device;
an inlet and an outlet for the liquid to be measured;
a flow channel provided between the inlet and the outlet; and
a turbine that is a radial turbine having a turbine wheel with single-curved blades positioned in the flow channel,
wherein the turbine wheel cooperates with the measuring device to measure the flow rate of the liquid,
wherein the single-curved blades extend with a forward curve towards leading edges in a rotation direction of the turbine wheel, and
wherein the turbine wheel is closed with the single-curved blades being arranged between a turbine wheel base and a co-rotating front cover plate.
2. The turbine wheel meter according to claim 1 , wherein blade passages of the turbine wheel, which are formed between two adjacent blades, are embodied as diverging, viewed in a flow direction.
3. The turbine wheel meter according to claim 1 , wherein a leading edge and/or a trailing edge of each of the blades extend in a curved shape.
4. The turbine wheel meter according to claim 3 , wherein the leading edge and/or the trailing edge of each of the blades extend in an arc shape.
5. The turbine wheel meter according to claim 1 , wherein a blade contour of each of the blades is asymmetrical to a camber line of a respective blade.
6. The turbine wheel meter according to claim 1 , wherein the blades of the turbine wheel have a sickle-shaped blade contour in a plan view.
7. The turbine wheel meter according to claim 1 , wherein a pressure edge and a suction edge of each of the blades extend in a curved shape.
8. The turbine wheel meter according to claim 1 , wherein a curvature of a pressure edge of each of the blades is smaller than a curvature of a suction edge of each of the blades.
9. The turbine wheel meter according to claim 1 , wherein each of the blades end before a suction opening of the turbine.
10. The turbine wheel meter according to claim 1 , wherein a rotation axis of the radial turbine extends in an inclined fashion relative to a flow direction at the outlet and/or at the inlet of the turbine wheel meter.
11. The turbine wheel meter according to claim 10 , wherein the rotation axis of the radial turbine extends normally to the flow direction at the outlet and/or at the inlet of the turbine wheel meter.
12. The turbine wheel meter according to claim 1 , wherein an inlet-side flow channel is connected to the turbine wheel via a deflection.
13. The turbine wheel meter according to claim 1 , wherein a rotation axis of the radial turbine extends in a direction of flow directions at the inlet and/or the outlet of the turbine wheel meter.
14. A turbine wheel meter for measuring a flow rate of a liquid, comprising:
a measuring device;
an inlet and an outlet for the liquid to be measured;
a flow channel provided between the inlet and the outlet and
a turbine that is a radial turbine having a turbine wheel with single-curved blades positioned in the flow channel,
wherein the turbine wheel cooperates with the measuring device to measure the flow rate of the liquid,
wherein the single-curved blades extend with a forward curve towards leading edges in a rotation direction of the turbine wheel,
wherein a turbine wheel base of the turbine wheel extends in a conical fashion, and
wherein a portion of a front cover plate extends in a conical fashion parallel to the wheel base.
15. A turbine wheel meter for measuring a flow rate of a liquid, comprising:
a measuring device;
an inlet and an outlet for the liquid to be measured;
a flow channel provided between the inlet and the outlet; and
a turbine that is a radial turbine having a turbine wheel with single-curved blades positioned in the flow channel,
wherein the turbine wheel cooperates with the measuring device to measure the flow rate of the liquid,
wherein the single-curved blades extend with a forward curve towards leading edges in a rotation direction of the turbine wheel,
wherein an inlet-side flow channel is connected to the turbine wheel via a deflection,
wherein the turbine wheel is open, and
wherein the deflection constitutes a front cover plate of the turbine wheel, the single-curved blades being arranged between a turbine wheel base and the front cover plate.