Turbomachine with an outer sealing and use of the turbomachine

1. A turbomachine comprising:

a stator comprising a stator component;

a rotor comprising a rotatable rotor component;

wherein the stator component defines at least one wall of a cooling cavity comprising a high pressure area of the turbomachine;

wherein the stator and the rotor define a working media fluid path, the working media fluid path being a low pressure area of the turbomachine;

wherein a pressure of the low pressure area is lower than a pressure of the high pressure area; and

a sealing ring, wherein the low pressure area and the high pressure area are separated via the sealing ring, the sealing ring being an annular ring comprising a diaphragm at an inner end of the annular ring,

wherein the stator component comprises a stator ring,

wherein the stator comprises a further stator component which defines a further wall of the high pressure area, wherein the further stator component is a guide vane;

wherein an annular gap between the guide vane and the stator ring is sealed by the sealing ring;

wherein the annular gap between the sealing ring and the guide vane is sealed with the aid of a frictional engagement; and

wherein the diaphragm comprises an axially oriented protrusion from the sealing ring, and wherein a peak of the axially oriented protrusion provides the frictional engagement.

2. The turbomachine according to claim 1 , further comprising:

a fastening element,

wherein the sealing ring is fixed to the stator ring with the aid of the fastening element.

3. The turbomachine according to claim 2 ,

wherein the fastening element is a screw.

4. The turbomachine, according to claim 1 ,

wherein the sealing ring is developed such that the sealing ring is slidable against an annular flange of the guide vane.

5. The turbomachine according to claim 4 , further comprising:

a sealing strip arranged between the sealing ring and the annular flange of the guide vane.

6. The turbomachine according to claim 1 ,

wherein the sealing ring acts as a disc spring in axial direction of the rotatable rotor component or of an adjacent section of the stator.

7. The turbomachine according to claim 1 ,

wherein the diaphragm is sized to accommodate axial thermal displacement of the stator component and the further stator component due to different thermal expansion of the stator component and the further stator component.

8. A method for producing electricity, comprising:

leading a working fluid to rotor blades of a rotor of a turbomachine according to claim 1 .

9. The turbomachine according to claim 2 ,

wherein the fastening element is the sole point of fixation of the sealing ring.

10. The turbomachine according to claim 6 ,

wherein the adjacent section of the stator is a combustion chamber exit section.

11. A turbomachine, comprising:

a stator comprising a stator ring;

a stator vane comprising a flange;

a sealing ring comprising a radially outer end secured to the stator ring and a radially inner end;

a rotor;

a working media fluid path defined by the stator and the rotor;

a cooling cavity bounded radially by the stator ring and the stator vane, and bounded at an axially upstream end by the sealing ring;

wherein a greater pressure in the cooling cavity than in the working media fluid path urges the radially inner end of the sealing ring axially upstream into frictional contact with the flange of the stator vane, and

wherein the frictional contact provides a seal between the cooling cavity and the working media fluid path.

12. The turbomachine of claim 11 , wherein the radially inner end of the sealing ring comprises a diaphragm comprising a protrusion oriented axially upstream, and wherein a peak of the protrusion contacts the flange of the stator vane to form the frictional contact and the seal.