US3533710A - Turbine valve assembly erection - Google Patents
Turbine valve assembly erection Download PDFInfo
- Publication number
- US3533710A US3533710A US3533710DA US3533710A US 3533710 A US3533710 A US 3533710A US 3533710D A US3533710D A US 3533710DA US 3533710 A US3533710 A US 3533710A
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- United States
- Prior art keywords
- valve assembly
- foundation
- turbine
- plate
- base plate
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- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6851—With casing, support, protector or static constructional installations
- Y10T137/6966—Static constructional installations
- Y10T137/6969—Buildings
- Y10T137/6988—Floor installation
Definitions
- the stop and control valve assembly for a steam turbine is mounted on a concrete foundation supplied by the customer. Angle members are imbedded in the foundation at the four corners of generally rectangular base plates for the stop valve and the control valves of the assembly.
- the valve assembly is aligned horizontally by means of jack screws threaded into the angle members to engage the edges of the base plates, and L-shaped liners are inserted between the angle members and the base plates to lock them in position. Jack screws are threaded into the base plates and engage relatively small jack plates on the fundation to position the base plates at the correct elevation.
- This invention relates generally, to valve assemblies and, more particularly to the erection in the field of stop and control valve assemblies for elastic fluid turbines.
- the stop and control valve assembly for a steam turbine controls the flow of high temperature and pressure steam to the turbine through relatively large and rigid preformed piping. Since the piping cannot be readily bent after it is once formed and installed it is necessary to align the openings in the valve assembly with the piping when the valve assembly is erected on a foundation supplied by the customer.
- a customer of a turbine manufacturer has been required to furnish a heavy steel backing plate anchored into the foundation. This plate is positioned to the correct center line and elevation at the time the foundation is constructed.
- the manufacturer furnishes metal liners machined to the required thickness and correct taper for final positioning of the valve assembly. After final alignment, the assembly is doweled to the customers backing plate.
- An object of this invention is to simplify the aligning of a valve assembly erected on a fixed foundation.
- Another object of the invention is to provide for maintaining the assembly in position after it has been aligned.
- the purchaser of a steam turbine builds a concrete foundation for the turbine and its stop and control valve assembly.
- Angle members are imbedded in the foundation near the location of the four corners of generally rectangular base plates for the stop and the control valves of the assembly.
- the valve assembly is aligned horizontally by means of jack screws threaded into the angle members to engage the edges of the base plates, and L-shaped liners ice are inserted between the angle members and the base plates to retain them in position.
- Jack screws are threaded into the base plates and engage relatively small jack plates on the foundation to position the base plates at the correct elevation.
- grouting material is placed in recesses underneath portions of the base plates.
- FIG. 1 is a view, in plan, of a portion of a steam turbine installation, including valve assemblies erected in accordance with the present invention
- FIG. 2 is a view, partly in side elevation and partly in section, of the installation shown in FIG. 1;
- FIG. 3 is an enlarged isometric view, partly in section, of a portion of a valve assembly and supporting foundation, and
- FIG. 4 is a detail view, in section, taken through a portion of the structure shown in FIG. 3 along line IVIV.
- the apparatus shown therein comprises a high pressure turbine 10 and main stop and control valve assemblies 12 and 14 for controlling the flow of high temperature steam to the turbine 10 through steampipes 16 and 18 interconnected between the turbine 10 and the valve assemblies 12 and 14, respectively.
- the turbine 10 and the valve assemblies 12 and 14 are mounted on a concrete foundation 20, the turbine being disposed between the valve assemblies.
- the turbine is supported by bearing pedestal assemblies 22 and 24 which are mounted on the concrete foundation 20.
- Each valve assembly includes a main stop valve 26 and two control valves 28 and 30.
- the valves may be of a type well known in the art suitable for controlling the flow of steam to the turbine to control its speed.
- High temperature, high pressure steam from any suitable supply (not shown) is conducted to each stop valve 26 through a steam pipe 31 connected to the housing for the stop valve.
- steam flows from the control valves to the turbine 10 through the steam pipes 16 and 18.
- the steam piping is relatively large and rigid and is preformed with thermal expansion U-bends to the shape shown before assembly. Hence, it cannot be readily bent once it is formed and installed. Therefore, it is necessary to align the openings in each valve assembly with the steam piping when the valve assembly is erected on the foundation 20.
- prior practice has required the customer to furnish a heavy steel backing plate anchored into the foundation. This plate was positioned to the correct center line and elevation at the time the foundation was constructed.
- the turbine manufacturer has furnished liners machined to the required thickness and correct taper (often compound) for final positioning of the valve assembly. After final alignment the assembly has been doweled to the customers backing plate.
- each valve assembly is mounted on two generally rectangular base plates 34 and 36 which. are connected together by a narrow plate or strap 38.
- the housing for each valve assembly is supported by a generally channel-shaped support member 40 and a steel plate 42 as shown more clearly in FIG. 2.
- the channelshaped member 40 is rigid and is welded to the base plate 34. Therefore, it prevents movement of the valve assembly housing in a plane parallel to the axis of the turbine 10.
- the support plate 42 is welded to the base plate 36 and to the housing for the valve assembly 14 and is mounted in a manner to permit the plate 42 to flex or bend in a plane parallel to the axis of the turbine to permit thermal expansion or growth of the valve assembly housing during operation.
- the base plates 34 and 36 are so positioned by means of the connecting strap 38 that the plate 42 is bent slightly in a direction such that when the housing for the valve assembly expands when becoming hot the plate 42 will be substantially vertical during operation of the turbine.
- the steam pipes which are connected to the housing for the valve assembly when cold are sprung slightly to apply a stress on the pipes when cold which is relieved when the valve assembly housing expands upon becoming hot.
- right-angle members 44 of L- shape are embedded in the foundation 20 during the construction of the foundation by the customer. As shown more clearly in FIG. 1, an angle member 44 is provided near each corner of the rectangular base plates 34 and 36. The angle members 44 do not have to be located with close precision but are disposed in closely spaced relation with the four corners of each base plate 34 and 36.
- foundation bolts 46 are also imbedded in the concrete foundation 20. These bolts must be located in approximately the correct position to permit the base plate 34 to be installed. However, sufficient clearance is provided between the bolts 46 and the holes 48 in the base plate for the bolts to permit the plate to be installed without the bolts being in their exact location and to permit some horizontal movement, as will later be explained.
- a recess 50 is provided in the foundation 20.
- a relatively small jack plate 52 is placed in the recess 50 prior to the installation of the base plate 34. The jack plate 52 is engaged by a jack screw 54 which is threaded into the base plate 34. Thus, the jack screw is utilized adjustably to bear against the jack plate 52 and position the base plate 34 at the correct elevation.
- threaded holes 56 are provided in each angle member 44 receiving back screws 58,.
- One hole '56 may be provided in each leg of each angle member 44.
- the jack screws 58 are utilized to engage and bear against the edges of the base plate 34 to adjustably position the base plate horizontally in any direction. Since there is an angle member 44 and a jack screw 54 at each one of the four corners of each base plate 34 and 36, the base plates may be correctly aligned both horizontally and vertically. After the base plates are properly aligned, the jack screws 58 are removed and L-shaped liners 60, machined to closely fit, are inserted in the spaces between the edges of the base plate and the angle members 44. After the liners 60 are installed, they may be attached to the angle members 44 by bolts 62 which are threaded into the angle members 44. The
- each angle member 60 extends downwardly through the leg of each angle member 60.
- grouting material 6 4 is placed in each recess as shown in FIG. 4.
- the nuts 66 on the foundation bolts 46 may then be tightened, and the jack screws 54 removed if desired.
- the base plate 34 is thus retained in the optimum position by the liners and the foundation bolts 46, thereby facilitating proper connections of the piping thereto.
- the base plate 36 is aligned in the same manner as the plate 34 and is retained in its optimum position by liners 60 and foundation bolts 46 for proper connection to its associated piping.
- valve assemblies for a steam turbine is simplified as compared with the prior manner of erecting the valve assemblies. Furthermore, the present method of erection will also facilitate service, if and when it is required.
- the additional means includes a jack plate interposed between the base plate and the foundation, and means threaded into the base plate to engage the jack plate and position the base plate at the correct elevation.
- the additional means includes a jack plate interposed between the base plate and the foundation, and means threaded into the base plate to engage the jack plate and position the base plate at the correct elevation.
- 5 The combination defined in claim 1, including liners disposed between the angle members and the corners of the base plate to retain the base plate in the aligned position. 6.
- each liner is L-eshaped with one leg attached to one leg of an angle member.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Description
v 'r. HAUG v TURBINE VALVE ASSEMBLY ERECTION Oct. 13, 1970 '2 she'et' sheet 1 Filed May 8. 1968 -I NVENTOR C Y Tho'rle'if 'Houg WITNESSES Oct. 13, 1970 T. HAUG 3,533,710
TURBINE VALVE ASSEMBLY ERECTION Filed May 8. 1968 2 Shets-Sheet 2 United States Patent O 3,533,710 TURBINE VALVE ASSEMBLYERECTION Thorleif Haug, Westmont, N.J., assignor to Westinghouse Electric Corporation, Pittsburgh, Pa., a corporation of Pennsylvania Filed May 8, 1968, Ser. No. 727,408 Int. Cl. F01d 1/00; F16f /00 US. Cl. 415121 6 Claims ABSTRACT OF THE DISCLOSURE The stop and control valve assembly for a steam turbine is mounted on a concrete foundation supplied by the customer. Angle members are imbedded in the foundation at the four corners of generally rectangular base plates for the stop valve and the control valves of the assembly. The valve assembly is aligned horizontally by means of jack screws threaded into the angle members to engage the edges of the base plates, and L-shaped liners are inserted between the angle members and the base plates to lock them in position. Jack screws are threaded into the base plates and engage relatively small jack plates on the fundation to position the base plates at the correct elevation.
BACKGROUND OF THE INVENTION This invention relates generally, to valve assemblies and, more particularly to the erection in the field of stop and control valve assemblies for elastic fluid turbines.
The stop and control valve assembly for a steam turbine controls the flow of high temperature and pressure steam to the turbine through relatively large and rigid preformed piping. Since the piping cannot be readily bent after it is once formed and installed it is necessary to align the openings in the valve assembly with the piping when the valve assembly is erected on a foundation supplied by the customer.
Heretofore, a customer of a turbine manufacturer has been required to furnish a heavy steel backing plate anchored into the foundation. This plate is positioned to the correct center line and elevation at the time the foundation is constructed. The manufacturer furnishes metal liners machined to the required thickness and correct taper for final positioning of the valve assembly. After final alignment, the assembly is doweled to the customers backing plate.
The prior method has caused the customer considerable concern because of the difliculty in maintaining the backing plate at the correct elevation and in a level plane during the construction of the foundation. In order to have a level plate, it is quite often necessary to machine the backing plate after it has been anchored in place in the foundation. Also, field doweling is an expensive operation.
An object of this invention is to simplify the aligning of a valve assembly erected on a fixed foundation.
Another object of the invention is to provide for maintaining the assembly in position after it has been aligned.
Other objects of the invention will be explained fully hereinafter or will be apparent to'those skilled in the art.
SUMMARY OF THE INVENTION In accordance with one embodiment of the invention, the purchaser of a steam turbine builds a concrete foundation for the turbine and its stop and control valve assembly. Angle members are imbedded in the foundation near the location of the four corners of generally rectangular base plates for the stop and the control valves of the assembly. The valve assembly is aligned horizontally by means of jack screws threaded into the angle members to engage the edges of the base plates, and L-shaped liners ice are inserted between the angle members and the base plates to retain them in position. Jack screws are threaded into the base plates and engage relatively small jack plates on the foundation to position the base plates at the correct elevation. After final alignment in proper mating relation with the steam piping, grouting material is placed in recesses underneath portions of the base plates.
BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the nature and objects of the invention, reference may be had to the following detailed description, taken in conjunction with the accompanying drawings in which:
FIG. 1 is a view, in plan, of a portion of a steam turbine installation, including valve assemblies erected in accordance with the present invention;
FIG. 2 is a view, partly in side elevation and partly in section, of the installation shown in FIG. 1;
FIG. 3 is an enlarged isometric view, partly in section, of a portion of a valve assembly and supporting foundation, and
FIG. 4 is a detail view, in section, taken through a portion of the structure shown in FIG. 3 along line IVIV.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawing, particularly to FIGS. 1 and 2, the apparatus shown therein comprises a high pressure turbine 10 and main stop and control valve assemblies 12 and 14 for controlling the flow of high temperature steam to the turbine 10 through steampipes 16 and 18 interconnected between the turbine 10 and the valve assemblies 12 and 14, respectively. The turbine 10 and the valve assemblies 12 and 14 are mounted on a concrete foundation 20, the turbine being disposed between the valve assemblies. The turbine is supported by bearing pedestal assemblies 22 and 24 which are mounted on the concrete foundation 20.
Each valve assembly includes a main stop valve 26 and two control valves 28 and 30. The valves may be of a type well known in the art suitable for controlling the flow of steam to the turbine to control its speed. High temperature, high pressure steam from any suitable supply (not shown) is conducted to each stop valve 26 through a steam pipe 31 connected to the housing for the stop valve. As previously explained, steam flows from the control valves to the turbine 10 through the steam pipes 16 and 18.
The steam piping is relatively large and rigid and is preformed with thermal expansion U-bends to the shape shown before assembly. Hence, it cannot be readily bent once it is formed and installed. Therefore, it is necessary to align the openings in each valve assembly with the steam piping when the valve assembly is erected on the foundation 20. As explained hereinbefore, prior practice has required the customer to furnish a heavy steel backing plate anchored into the foundation. This plate was positioned to the correct center line and elevation at the time the foundation was constructed. The turbine manufacturer has furnished liners machined to the required thickness and correct taper (often compound) for final positioning of the valve assembly. After final alignment the assembly has been doweled to the customers backing plate.
This prior method has caused the customer considerable concern because of the difiiculty in maintaining the backing plate at the correct elevation and in a level plane during construction of the foundation. In order to have a level plate, quite often it has been necessary to machine the backing plate after it has been anchored into the foundation. The installation of the dowel pins was also an expensive operation.
As shown more clearly in FIG. 1, in accordance with the invention, each valve assembly is mounted on two generally rectangular base plates 34 and 36 which. are connected together by a narrow plate or strap 38. The housing for each valve assembly is supported by a generally channel-shaped support member 40 and a steel plate 42 as shown more clearly in FIG. 2. The channelshaped member 40 is rigid and is welded to the base plate 34. Therefore, it prevents movement of the valve assembly housing in a plane parallel to the axis of the turbine 10.
The support plate 42 is welded to the base plate 36 and to the housing for the valve assembly 14 and is mounted in a manner to permit the plate 42 to flex or bend in a plane parallel to the axis of the turbine to permit thermal expansion or growth of the valve assembly housing during operation. During the erection of the valve assembly when it is cold, the base plates 34 and 36 are so positioned by means of the connecting strap 38 that the plate 42 is bent slightly in a direction such that when the housing for the valve assembly expands when becoming hot the plate 42 will be substantially vertical during operation of the turbine. Likewise, the steam pipes which are connected to the housing for the valve assembly when cold are sprung slightly to apply a stress on the pipes when cold which is relieved when the valve assembly housing expands upon becoming hot.
In order to simplify the erection of the valve assembly upon the foundation 20, right-angle members 44 of L- shape are embedded in the foundation 20 during the construction of the foundation by the customer. As shown more clearly in FIG. 1, an angle member 44 is provided near each corner of the rectangular base plates 34 and 36. The angle members 44 do not have to be located with close precision but are disposed in closely spaced relation with the four corners of each base plate 34 and 36.
As shown more clearly in FIG. 3, foundation bolts 46 are also imbedded in the concrete foundation 20. These bolts must be located in approximately the correct position to permit the base plate 34 to be installed. However, sufficient clearance is provided between the bolts 46 and the holes 48 in the base plate for the bolts to permit the plate to be installed without the bolts being in their exact location and to permit some horizontal movement, as will later be explained. A recess 50 is provided in the foundation 20. As shown more clearly in FIG. 4, a relatively small jack plate 52 is placed in the recess 50 prior to the installation of the base plate 34. The jack plate 52 is engaged by a jack screw 54 which is threaded into the base plate 34. Thus, the jack screw is utilized adjustably to bear against the jack plate 52 and position the base plate 34 at the correct elevation.
As shown in FIG. 3, threaded holes 56 are provided in each angle member 44 receiving back screws 58,. One hole '56 may be provided in each leg of each angle member 44. Thus, the jack screws 58 are utilized to engage and bear against the edges of the base plate 34 to adjustably position the base plate horizontally in any direction. Since there is an angle member 44 and a jack screw 54 at each one of the four corners of each base plate 34 and 36, the base plates may be correctly aligned both horizontally and vertically. After the base plates are properly aligned, the jack screws 58 are removed and L-shaped liners 60, machined to closely fit, are inserted in the spaces between the edges of the base plate and the angle members 44. After the liners 60 are installed, they may be attached to the angle members 44 by bolts 62 which are threaded into the angle members 44. The
From the foregoing description it is apparent that the erection of valve assemblies for a steam turbine is simplified as compared with the prior manner of erecting the valve assemblies. Furthermore, the present method of erection will also facilitate service, if and when it is required.
I claim:
1. In an elastic fluid turbine installation, in combination, an elastic fluid turbine,
a valve assembly for the turbine,
elastic fluid piping fixedly carried by said turbine for interconnecting the turbine and the valve assembly,
a concrete foundation for the valve assembly,
a generally rectangular metal base plate supporting the valve assembly on the foundation,
angle members imbedded in the foundation adjacent the corners of the base plate, and
means cooperating with the angle members and the base plate to align the valve assembly with said piping.
2. The combination defined in claim 1, in which the cooperating means is effective to align the valve assembly in a horizontal plane, and further including additional means cooperating with the base plate and the foundation adjustably to position the base plate at the correct elevation.
3. The combination defined in claim 1, wherein said means is threaded into the angle members to engage edges of the base plate.
4. The combination defined in claim 2, wherein the additional means includes a jack plate interposed between the base plate and the foundation, and means threaded into the base plate to engage the jack plate and position the base plate at the correct elevation. 5 The combination defined in claim 1, including liners disposed between the angle members and the corners of the base plate to retain the base plate in the aligned position. 6. The combination defined in claim 5, wherein each liner is L-eshaped with one leg attached to one leg of an angle member.
References Cited UNITED STATES PATENTS 2,004,238 6/1935 Fithian 24823 2,260,010 10/1941 Doran 415-126 2,746,313 5/1956 Roubal 248-23 3,026,607 3/1962 McNulty 24823 FOREIGN PATENTS 398,757 9/ 19 33 Great Britain.
HENRY F. RAD UAZO, Primary Examiner U.S. c1. X.R.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72740868A | 1968-05-08 | 1968-05-08 |
Publications (1)
Publication Number | Publication Date |
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US3533710A true US3533710A (en) | 1970-10-13 |
Family
ID=24922524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3533710D Expired - Lifetime US3533710A (en) | 1968-05-08 | 1968-05-08 | Turbine valve assembly erection |
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US (1) | US3533710A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3658438A (en) * | 1970-12-03 | 1972-04-25 | Westinghouse Electric Corp | Segmented seating plates and anchoring means for a turbine power plant |
US3752427A (en) * | 1971-03-11 | 1973-08-14 | Bbc Brown Boveri & Cie | Support arrangement for a turbomachine |
US4257234A (en) * | 1978-04-17 | 1981-03-24 | Kraftwerk Union Aktiengesellschaft | Valve arrangement for turbosets |
US20120240580A1 (en) * | 2011-03-25 | 2012-09-27 | Kabushiki Kaisha Toshiba | Steam valve device and steam turbine plant |
US20130028706A1 (en) * | 2011-07-01 | 2013-01-31 | Itt Manufacturing Enterprises Llc | Method and apparatus for adjusting impeller/ring clearance in a pump |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB398757A (en) * | 1932-04-01 | 1933-09-21 | British Thomson Houston Co Ltd | Improvements in and relating to bearing brackets |
US2004238A (en) * | 1934-01-25 | 1935-06-11 | Hazel Atlas Glass Co | Leveling and adjusting block |
US2260010A (en) * | 1939-01-05 | 1941-10-21 | Gen Electric | Marine turbine condenser and supporting arrangement |
US2746313A (en) * | 1953-03-30 | 1956-05-22 | Allis Chalmers Mfg Co | Grinding mill support base |
US3026607A (en) * | 1958-09-10 | 1962-03-27 | Westinghouse Electric Corp | Method of leveling a machine mounted on a bedplate |
-
1968
- 1968-05-08 US US3533710D patent/US3533710A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB398757A (en) * | 1932-04-01 | 1933-09-21 | British Thomson Houston Co Ltd | Improvements in and relating to bearing brackets |
US2004238A (en) * | 1934-01-25 | 1935-06-11 | Hazel Atlas Glass Co | Leveling and adjusting block |
US2260010A (en) * | 1939-01-05 | 1941-10-21 | Gen Electric | Marine turbine condenser and supporting arrangement |
US2746313A (en) * | 1953-03-30 | 1956-05-22 | Allis Chalmers Mfg Co | Grinding mill support base |
US3026607A (en) * | 1958-09-10 | 1962-03-27 | Westinghouse Electric Corp | Method of leveling a machine mounted on a bedplate |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3658438A (en) * | 1970-12-03 | 1972-04-25 | Westinghouse Electric Corp | Segmented seating plates and anchoring means for a turbine power plant |
US3752427A (en) * | 1971-03-11 | 1973-08-14 | Bbc Brown Boveri & Cie | Support arrangement for a turbomachine |
US4257234A (en) * | 1978-04-17 | 1981-03-24 | Kraftwerk Union Aktiengesellschaft | Valve arrangement for turbosets |
US20120240580A1 (en) * | 2011-03-25 | 2012-09-27 | Kabushiki Kaisha Toshiba | Steam valve device and steam turbine plant |
US9790805B2 (en) * | 2011-03-25 | 2017-10-17 | Kabushiki Kaisha Toshiba | Steam valve device and steam turbine plant |
EP2503105A3 (en) * | 2011-03-25 | 2017-12-20 | Kabushiki Kaisha Toshiba | Steam valve device and steam turbine plant |
US20130028706A1 (en) * | 2011-07-01 | 2013-01-31 | Itt Manufacturing Enterprises Llc | Method and apparatus for adjusting impeller/ring clearance in a pump |
CN103688060A (en) * | 2011-07-01 | 2014-03-26 | Itt制造企业有限责任公司 | Method and apparatus for adjusting impeller-sealing ring clearance in a pump |
US9051940B2 (en) * | 2011-07-01 | 2015-06-09 | Itt Manufacturing Enterprises Llc. | Method and apparatus for adjusting impeller/ring clearance in a pump |
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