Turbine exhaust structure of particular design

1. A turbine exhaust structure, comprising:

a casing divided into a first element having an arcuate shape and a second element coupled to the first element, with a central aperture formed between the first element and the second element, the central aperture extending from a first face of the casing to a second face of the casing opposing the first face, wherein the first element and the second element are configured to receive turbine exhaust, wherein a flow of the turbine exhaust in the first element is undivided from a flow of the turbine exhaust in the second element to form an unseparated turbine exhaust passage;

wherein the second element comprises at least one outlet having a rectangular cross section configured to receive the flow of turbine exhaust from the first element and the flow of turbine exhaust from the second element, wherein the at least one outlet combines the flow of turbine exhaust from the first element with the flow of turbine exhaust from the second element and directs a combined flow of turbine exhaust in a downward direction extending outward from a side of the second element;

at least one exhaust pipe having a circular cross section correspondingly coupled to the at least one outlet of the second element of the casing, wherein the at least one exhaust pipe is configured to receive only the combined flow of turbine exhaust from the second element, wherein the at least one exhaust pipe directs the downward directed combined flow of turbine exhaust received from the at least one outlet in a direction extending outward from the at least one outlet, and

at least one connecting pipe configured to correspondingly connect the at least one outlet of the second element to the at least one exhaust pipe, the at least one connecting pipe having a first end with a rectangular cross section coupled to the rectangular cross section of the at least one outlet and a second end with a circular cross section coupled to the circular cross section of the at least one exhaust pipe, wherein the at least one connecting pipe directs the combined flow of turbine exhaust received from the at least one outlet in the same downward direction towards the at least one exhaust pipe, wherein the at least one exhaust pipe guides the combined flow of turbine exhaust received from the at least one connecting pipe in a direction extending laterally outward from the at least one outlet and the least one connecting pipe,

wherein the turbine exhaust structure is an intermediate-pressure exhaust end.

2. The turbine exhaust structure according to claim 1 , wherein the first element is connected to the second element along a horizontal joint plane.

3. The turbine exhaust structure according to claim 1 , wherein the first element is an upper element, and the second element is a lower element.

4. The turbine exhaust structure according to claim 1 , wherein a section of the first face of the central aperture is larger than a section of the second opposite face of the central aperture.

5. The turbine exhaust structure according to claim 1 , wherein the at least one connecting pipe comprises a plurality of connecting pipes, and wherein the second element comprises at least two outlets, each outlet connected to a respective connecting pipe of the plurality of connecting pipes.

6. The turbine exhaust structure according to claim 1 , wherein the second element is welded to the at least one connecting pipe.

7. The turbine exhaust structure according to claim 1 , wherein a dimension of the turbine exhaust structure varies from 6 to 12 meters.

8. The turbine exhaust structure according to claim 1 , wherein a dimension of the turbine exhaust structure varies from 9 to 10 meters.

9. The turbine exhaust structure according to claim 1 , wherein a dimension of the turbine exhaust structure varies from 2 to 6 meters.

10. The turbine exhaust structure according to claim 1 , wherein a dimension of the turbine exhaust structure varies from 3 to 4 meters.

11. The turbine exhaust structure according to claim 1 , wherein no pipe is connected to the first element.

12. The turbine exhaust structure of claim 1 , further comprising:

a plurality of spaced outer reinforcements on the first element and the second element, each of the spaced outer reinforcements extending radially from the central aperture about both the first face of the casing and the second face of the casing.

13. A steam turbine, comprising:

a combined high-and-intermediate pressure (HIP) casing having a high pressure casing; and

an intermediate pressure turbine exhaust end structure coupled to the HIP casing, the intermediate pressure turbine exhaust structure end structure including:

a casing divided into a first element having an arcuate shape and a second element coupled to the first element, with a central aperture formed between the first element and the second element, the central aperture extending from a first face of the casing to a second face of the casing opposing the first face, wherein the first element and the second element are configured to receive turbine exhaust, wherein a flow of the turbine exhaust in the first element is undivided from a flow of the turbine exhaust in the second element to form an unseparated turbine exhaust passage;

wherein the second element comprises at least one outlet having a rectangular cross section configured to receive the flow of turbine exhaust from the first element and the flow of turbine exhaust from the second element, wherein the at least one outlet combines the flow of turbine exhaust from the first element with the flow of turbine exhaust from the second element and directs a combined flow of turbine exhaust in a downward direction extending outward from a side of the second element;

at least one exhaust pipe having a circular cross section correspondingly coupled to the at least one outlet of the second element of the casing, wherein the at least one exhaust pipe is configured to receive only the combined flow of turbine exhaust from the second element, wherein the at least one exhaust pipe directs the downward directed combined flow of turbine exhaust received from the at least one outlet in a direction extending outward from the at least one outlet, and

at least one connecting pipe configured to correspondingly connect the at least one outlet of the second element to the at least one exhaust pipe, the at least one connecting pipe having a first end with a rectangular cross section coupled to the rectangular cross section of the at least one outlet and a second end with a circular cross section coupled to the circular cross section of the at least one exhaust pipe, wherein the at least one connecting pipe directs the combined flow of turbine exhaust received from the at least one outlet in the same downward direction towards the at least one exhaust pipe, wherein the at least one exhaust pipe guides the combined flow of turbine exhaust received from the at least one connecting pipe in a direction extending laterally outward from the at least one outlet and the least one connecting pipe.

14. The steam turbine according to claim 13 , wherein the first face of the casing of the intermediate pressure turbine exhaust end structure is configured to connect with the HIP casing.

15. A turbine exhaust structure, comprising:

a casing divided into a first element having an arcuate shape and a second element coupled to the first element, with a central aperture formed between the first element and the second element, the central aperture extending from a first face of the casing to a second face of the casing opposing the first face, wherein the first element and the second element are configured to receive turbine exhaust, wherein a flow of the turbine exhaust in the first element is undivided from a flow of the turbine exhaust in the second element to form an unseparated turbine exhaust passage;

wherein the second element comprises a first outlet and a second outlet, each outlet having a rectangular cross section configured to receive the flow of turbine exhaust from the first element and the flow of turbine exhaust from the second element, wherein each of the first outlet and the second outlet combines the flow of turbine exhaust from the first element with the flow of turbine exhaust from the second element and directs a combined flow of turbine exhaust in a downward direction extending outward from a side of the second element, wherein the first outlet and the second outlet are located on opposing sides of the second element;

a first exhaust pipe and a second exhaust pipe correspondingly coupled with the first outlet and the second outlet of the second element of the casing, the first exhaust pipe and the second exhaust pipe each having a circular cross section, wherein the first exhaust pipe and the second exhaust pipe are each configured to receive only the combined flow of turbine exhaust from the second element, wherein each of the first and second exhaust pipes directs the downward directed combined flow of turbine exhaust received from the correspondingly coupled first outlet and second outlet in a direction extending outward from the correspondingly coupled first outlet and second outlet, and

a first connecting pipe and a second connecting pipe correspondingly connecting the first and the second outlets of the second element to the first and second exhaust pipes, the first connecting pipe and the second connecting pipe each having a first end with a rectangular cross section correspondingly coupled to the rectangular cross sections of the first and the second outlets and a second end with a circular cross section correspondingly coupled to the circular cross sections of the first and the second exhaust pipes, wherein each of the first and second connecting pipes directs the combined flow of turbine exhaust received from the correspondingly coupled first outlet and second outlet in the same downward direction towards the correspondingly coupled first exhaust pipe and second exhaust pipe, wherein each of the first exhaust pipe and second exhaust pipe guides the combined flow of turbine exhaust received from the correspondingly coupled first connecting pipe and second connecting pipe in a direction extending laterally outward from the correspondingly coupled first outlet and second outlet and the correspondingly coupled first connecting pipe and second connecting pipe,

wherein the turbine exhaust structure is an intermediate-pressure exhaust end.