Turbine and turbocharger
A turbine for a turbocharger, for expanding a medium, with a turbine rotor, having a turbine housing with an insert piece, which runs radially outside of the adjoining blades of the turbine rotor. The insert piece at an upstream end, includes a first flange and a second flange at a downstream end. The insert piece, in a middle section, which extends between the first flange and the second flange, has an approximately constant thickness.
1. A turbine for a turbocharger, for expanding a medium, comprising
a turbine rotor;
a turbine housing; an insert piece, running radially outside directly adjacent to moving blades of the turbine rotor, wherein the insert piece comprises:
a first flange at an upstream end;
a second flange at a downstream end; and
a middle section, which extends between the first flange and the second flange, having a substantially constant thickness.
2. The turbine according to claim 1 , wherein the thickness is defined by a radial distance between a radially inner, flow-conducting wall and a radially outer wall.
3. The turbine according to claim 2 , wherein the substantially constant thickness between the first flange and the second flange changes by maximally.+−0.10% based on a mean thickness of the middle section.
4. The turbine according to any one of the claim 2 , wherein the substantially constant thickness between the first flange and the second flange changes by maximally.+−0.10 mm based on a mean thickness of the middle section.
5. The turbine according to claim 3 , wherein the mean thickness of the middle section is between 3% and 9% of a fit diameter of the insert piece.
6. The turbine according to claim 5 , wherein the mean thickness is between 4% and 8% of the fit diameter.
7. The turbine according to claim 6 , wherein the mean thickness is between 5% and 7% of the fit diameter.
8. The turbine according to claim 5 , wherein the fit diameter is defined by a radial contact surface for a section of the turbine housing formed on the first flange of the insert piece.
9. The turbine according to claim 1 , wherein the insert piece is screwed to an inflow housing at the downstream end of the insert piece via screws that extend through a flange of an inflow housing of the turbine housing and the second flange of the insert piece.
10. The turbine according to claim 4 , wherein the mean thickness of the middle section amounts to between 3% and 9% of a fit diameter of the insert piece.
11. A turbocharger, comprising:
a turbine for expanding a first medium comprising:
a turbine rotor;
a turbine housing;
an insert piece, running radially outside directly adjacent to moving blades of the turbine rotor, wherein the insert piece comprises:
a first flange at an upstream end;
a second flange at a downstream end; and
a middle section, which extends between the first flange and the second flange, having a substantially constant thickness; and
a compressor for compressing a second medium.