Claims
- 1. A nozzle chamber assembly for a steam turbine having horizontally split inner and outer cylinders each having upper and lower halves, said nozzle chamber assembly comprising
- unconnected upper and lower nozzle chambers, each having at least one cavity and an inlet nozzle in fluid communication with each cavity;
- said nozzle chamber inlet nozzles each having a plurality of circumferential grooves disposed on the distal end thereof;
- said inner cylinder having a plurality of cylindrical openings of essentially constant diameter for sealably receiving said nozzle chamber inlet nozzles;
- said outer cylinder having a plurality of inlet nozzles which extend through said outer cylinder and are sealably received by said essentially constant diameter cylindrical opening in said inner cylinder;
- each outer cylinder inlet nozzle having an inner distal end spaced from the distal end of an associated nozzle chamber inlet nozzle;
- said outer cylinder inlet nozzles having a plurality of circumferential grooves adjacent the distal ends thereof;
- ring sealing means disposed in said nozzle chamber and said outer cylinder inlet nozzle circumferential grooves to form a pressure tight seal between said inlet nozzle and said cylindrical openings in said inner cylinder whereby the only thing holding the nozzle chambers together are pressure and gravitational forces so they are free to move with respect to each other providing free expansion and eliminating possible vibratory interactions between the nozzle chambers; and
- locking means cooperatively associated with each of said nozzle chambers and said inner cylinder to fix each nozzle chamber with respect to the inner cylinder and the axis of the turbine and to allow each nozzle chamber to expand and contract completely independent of the other.
- 2. A nozzle chamber assembly as set forth in claim 1, wherein the locking means includes:
- lower axial locking means cooperatively associated with said lower nozzle chamber and said lower half of said inner cylinder to essentially fix the axial position of said lower nozzle chamber with respect to said lower half of said inner cylinder adjacent said axial locking means;
- lower lateral locking means cooperatively associated with said lower nozzle chamber and said lower half of said inner cylinder to essentially fix the lateral position of said lower nozzle chamber with respect to the lower half of said inner cylinder adjacent said lateral locking means;
- upper axial locking means cooperatively associated with said upper nozzle chamber and said upper half of said inner cylinder to essentially fix the axial position of said upper nozzle chamber with respect to said upper half of said inner cylinder adjacent said axial locking means;
- upper lateral locking means cooperatively associated with the upper nozzle chamber and said upper half of said inner cylinder to essentially fix the lateral position of said upper nozzle chamber with respect to the upper half of said inner cylinder adjacent said lateral locking means;
- whereby though fixed with respect to the inner cylinder both axially and laterally the upper and lower nozzle chambers are free to expand with respect to each other and with respect to the inner cylinder.
- 3. A nozzle chamber assembly as set forth in claim 2, wherein the lower and upper axial locking means comprise a plurality of lugs extending radially outwardly from said nozzle chambers and each lug has a circumferentially extending groove which receives a tongue extending radially inwardly from the inner cylinder.
- 4. A nozzle chamber assembly as set forth in claim 3, wherein the lower and upper lateral locking means comprise a lug having axially oriented parallel sides which are received by an axially oriented groove in the inner cylinder.
- 5. A nozzle chamber assembly as set forth in claim 4, wherein each nozzle chamber has three lugs disposed thereon, one on each side of each nozzle chamber, the lower chamber having one lug extending from the lower portion thereof and the upper nozzle chamber having one lug extending from the upper portion thereof.
- 6. A nozzle chamber assembly as set forth in claim 5, wherein the upper and lower lugs respectively disposed on the upper and lower nozzle chambers have the lateral locking means disposed thereon.
- 7. A nozzle chamber assembly as set forth in claim 2 and further comprising means for fastening said upper nozzle chamber to said upper portion of said inner cylinder during assembly of said steam turbine.
- 8. A nozzle chamber assembly as set forth in claim 7 wherein the fastening means comprises bolt holes in said inner cylinder and upper nozzle chamber, a bolt which is removable and a plug for sealing the bolt hole in the inner cylinder when the bolt is removed after assembly.
Parent Case Info
This application is a continuation of application Ser. No. 765,736 filed Aug. 14, 1985 now abandoned.
US Referenced Citations (8)
Continuations (1)
|
Number |
Date |
Country |
Parent |
765736 |
Aug 1985 |
|