US20120183398A1 - System and method for controlling flow through a rotor - Google Patents
System and method for controlling flow through a rotor Download PDFInfo
- Publication number
- US20120183398A1 US20120183398A1 US13/005,952 US201113005952A US2012183398A1 US 20120183398 A1 US20120183398 A1 US 20120183398A1 US 201113005952 A US201113005952 A US 201113005952A US 2012183398 A1 US2012183398 A1 US 2012183398A1
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- Prior art keywords
- rotor
- fluid
- flow
- signal
- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
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- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
- F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine-casing
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- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
Definitions
- the present invention generally involves a system and method for controlling flow through a rotor.
- particular embodiments of the present invention may control the amount of fluid diverted through a rotor to warm up the rotor.
- Gas turbines are widely used in industrial and commercial operations.
- a typical gas turbine includes a compressor at the front, one or more combustors around the middle, and a turbine at the rear.
- the compressor imparts kinetic energy to the working fluid (e.g., air) to produce a compressed working fluid at a highly energized state.
- the compressed working fluid exits the compressor and flows to the combustors where it mixes with fuel and ignites to generate combustion gases having a high temperature and pressure.
- the combustion gases flow to the turbine where they expand to produce work. For example, expansion of the combustion gases in the turbine may rotate a shaft connected to a generator to produce electricity.
- the compressor and the turbine typically share a common rotor which extends from near the front of the compressor, through the combustor section, to near the rear of the turbine. Due to the length and size of the rotor, the total weight of the rotor may approach or exceed 100 tons.
- the outer portion of the rotor heats up faster than the inner portion of the rotor creating a temperature gradient across the rotor profile.
- the temperature gradient across the rotor profile produces substantial thermal stresses across the rotor that are generally proportional to T max ⁇ T ave .
- T max is the maximum temperature across the rotor profile.
- T max may approach the temperature of the compressed working fluid exiting the compressor, and in the turbine section, T max may approach the temperature of the combustion gases entering the turbine.
- T ave is the average temperature across the rotor profile and is initially ambient temperature during a cold startup of the gas turbine. The thermal stress across the rotor continues until the temperature across the rotor profile reaches equilibrium, which may be 12 hours or longer, and substantially reduces the low cycle fatigue limit of the rotor.
- a process fluid may be diverted from the compressor to flow through the rotor to decrease the differential temperature between T max and T ave and allow the rotor to reach equilibrium temperature in a shorter period of time.
- the diverted fluid decreases the efficiency of the compressor by reducing the amount of compressed working fluid produced by the compressor.
- the diverted fluid creates turbulence as it is reintroduced into the compressor airflow, and the turbulence may create laminar separation across the compressor blades. Therefore, an improved system and method for controlling flow through a rotor would be useful.
- One embodiment of the present invention is a system for controlling flow through a rotor.
- the system includes an inlet port in the rotor and an outlet port in the rotor.
- the outlet port is in fluid communication with the inlet port.
- a variable orifice is disposed in at least one of the inlet or outlet ports.
- Another embodiment of the present invention is a system for warming a rotor.
- the system includes a fluid passage through the rotor.
- a valve is disposed in the fluid passage to control the flow of a fluid through the fluid passage.
- the present invention may also include any method for controlling flow through a rotor.
- the method includes diverting a process fluid and flowing the diverted process fluid through a fluid passage in the rotor.
- the method further includes reducing the flow of be diverted process fluid through the fluid passage in the rotor.
- FIG. 1 is a simplified cross-section view of a rotor according to one embodiment of the present invention
- FIG. 2 is a perspective view of one side of a rotor wheel shown in FIG. 1 taken along line A-A;
- FIG. 3 is a perspective view of another side of a rotor wheel shown in FIG. 1 taken along line B-B.
- Embodiments within the scope of the present invention provide a system and method for enhancing the expected life of a rotor and improving the efficiency of a gas turbine.
- the present invention may control the flow of a fluid through the rotor to warm the rotor, thereby reducing thermal stresses across the rotor profile. The reduced thermal stresses will enhance the low cycle fatigue limits of the rotor.
- embodiments within the scope of the present invention enhance the gas turbine efficiency by controlling the amount and/or duration of fluid flow through the rotor.
- FIG. 1 provides a simplified cross-section view of the top half of a rotor 10 according to one embodiment of the present invention.
- the rotor 10 may comprise a plurality of rotor wheels 12 axially connected by a tie rod 14 to rotate together around a centerline 16 .
- each rotor wheel 12 may be associated with a rotating blade 18 or stationary nozzle 20 , as shown in FIG. 1 .
- each rotor wheel 12 may be associated with a rotating bucket or stator.
- the rotor 10 includes a plurality of cavities 22 between and through adjacent rotor wheels 12 .
- the cavities 22 reduce the total weight of the rotor 10 .
- the cavities 22 provide one or more fluid passages between and around adjacent rotor wheels 12 .
- the fluid passages include at least one inlet port 24 and at least one outlet port 26 in fluid communication with the inlet port 24 .
- the inlet and and/or outlet ports 24 , 26 may comprise any suitable passage, plenum, or pathway through a single rotor wheel 12 or between adjacent rotor wheels 12 .
- the inlet port 24 or outlet port 26 may comprise a radial bore hole between adjacent rotor wheels 12 . In this manner, a fluid may flow through the inlet port 24 into the fluid passage and through and/or around the rotor wheels 12 before exiting the fluid passage through the outlet port 26 , as indicated by the flow arrows in FIG. 1 .
- variable orifice 28 may be disposed in the fluid passage in at least one of the inlet or outlet ports 24 , 26 to control the fluid flow through the fluid passage.
- the variable orifice 28 may have a first position that permits fluid flow through at least one of the inlet or outlet ports 24 , 26 and a second position that reduces and/or prevents fluid flow through at least one of the inlet or outlet ports 24 , 26 .
- the variable orifice 28 may comprise any suitable mechanism known to one of ordinary skill in the art for preventing or preventing fluid flow.
- the variable orifice 28 may comprise a thermally actuated valve 30 that responds to temperature changes in the rotor wheels 12 . As shown in FIG.
- the valve 30 may include a piston 32 or disk connected to a diaphragm 34 inside the valve 30 .
- the diaphragm 34 may contract to retract the piston 32 or disc into the valve 30 to place the variable orifice 28 in the first position that allows or permits fluid flow through at least one of the inlet or outlet ports 24 , 26 .
- the diaphragm 34 may expand to force the piston 32 or disk out of the valve 30 to obstruct or completely seal off the associated inlet or outlet port 24 , 26 .
- the variable orifice 28 is in the second position which reduces or prevents fluid flow through at least one of the inlet or outlet ports 24 , 26 .
- variable orifice 28 may be connected to a controller 36 for remote operation of the variable orifice 28 in alternate embodiments within the scope of the present invention.
- the technical effect of the controller 36 is to transmit a signal 38 to the variable orifice 28 to remotely operate the variable orifice 28 .
- the controller 36 may be a stand alone component, such as a temperature sensor or timer, or a subcomponent included in any computer system known in the art, such as a laptop, a personal computer, a mini computer, or a mainframe computer.
- the various controller and computer systems discussed herein are not limited to any particular hardware architecture or configuration.
- Embodiments of the systems and methods set forth herein may be implemented by one or more general-purpose or customized controllers adapted in any suitable manner to provide the desired functionality.
- the controller 36 may be adapted to provide additional functionality, either complementary or unrelated to the present subject matter.
- any suitable programming, scripting, or other type of language or combinations of languages may be used to implement the teachings contained herein.
- some systems and methods set forth and disclosed herein may also be implemented by hardwired logic or other circuitry, including, but not limited to, application-specific circuits. Of course, various combinations of computer-executed software and hardwired logic or other circuitry may be suitable as well.
- the signal 38 generated by the controller 36 may be based on any of several parameters being monitored that are reflective of the rotor 10 temperature, thermal gradient across the rotor profile, and/or thermal stresses across the rotor 10 .
- the signal 38 may reflect or be based on a temperature of the rotor 10 that indicates that the temperature profile across the rotor 10 has reached equilibrium.
- the signal 38 may reflect or be based on the temperature of the compressed working fluid exiting the compressor or the combustion gases flowing through the turbine that indicates the maximum outer temperature of the rotor 10 .
- the signal 38 may reflect or be based on a time interval determined through calculations or testing to be a sufficient time for the rotor 10 to reach equilibrium.
- variable orifice 28 may be in the first or open position during start up of the gas turbine to divert a portion of a process fluid, such as the working fluid flowing through the compressor, through the inlet port 24 .
- the diverted fluid would then flow through the fluid passages in the rotor 10 , exiting through the outlet port 26 and returning to the flow of compressed working fluid through the compressor or the combustion gases in the turbine.
- the variable orifice 28 will eventually close. For example, if thermally actuated, the increased temperature will cause the variable orifice 28 to reposition to the second or closed position to reduce or prevent the fluid flow through the fluid passages.
- the controller 36 may generate the signal 38 to the variable orifice 28 to reposition the variable orifice 28 between the first or second positions, as desired.
- the systems described and illustrated with respect to FIGS. 13 may also provide a method for controlling flow through the rotor 10 .
- the method may include diverting a process fluid, for example compressed working fluid from the compressor, and flowing the diverted process fluid through fluid passages in the rotor 10 .
- the method may further include reducing the flow of the diverted process fluid through the fluid passages in the rotor 10 , for example based on a predetermined temperature limit or a predetermined time limit.
- the variable orifice 28 or valve may be used to reduce the flow of the diverted process fluid through the passage in the rotor 10 , and the controller 36 may generate the signal 38 based on a temperature or time.
Abstract
A system for controlling flow through a rotor includes an inlet port in the rotor and an outlet port in the rotor. The outlet port is in fluid communication with the inlet port. A variable orifice is disposed in at least one of the inlet or outlet ports. A method for controlling flow through a rotor includes diverting a process fluid and flowing the diverted process fluid through a fluid passage in the rotor. The method further includes reducing the flow of the diverted process fluid through the fluid passage in the rotor.
Description
- The present invention generally involves a system and method for controlling flow through a rotor. For example, particular embodiments of the present invention may control the amount of fluid diverted through a rotor to warm up the rotor.
- Gas turbines are widely used in industrial and commercial operations. A typical gas turbine includes a compressor at the front, one or more combustors around the middle, and a turbine at the rear. The compressor imparts kinetic energy to the working fluid (e.g., air) to produce a compressed working fluid at a highly energized state. The compressed working fluid exits the compressor and flows to the combustors where it mixes with fuel and ignites to generate combustion gases having a high temperature and pressure. The combustion gases flow to the turbine where they expand to produce work. For example, expansion of the combustion gases in the turbine may rotate a shaft connected to a generator to produce electricity.
- The compressor and the turbine typically share a common rotor which extends from near the front of the compressor, through the combustor section, to near the rear of the turbine. Due to the length and size of the rotor, the total weight of the rotor may approach or exceed 100 tons. During startup of the gas turbine, as compressed working fluid flows through the compressor and combustion gases flow through the turbine, the outer portion of the rotor heats up faster than the inner portion of the rotor creating a temperature gradient across the rotor profile. The temperature gradient across the rotor profile produces substantial thermal stresses across the rotor that are generally proportional to Tmax−Tave. Tmax is the maximum temperature across the rotor profile. In compressor section, Tmax may approach the temperature of the compressed working fluid exiting the compressor, and in the turbine section, Tmax may approach the temperature of the combustion gases entering the turbine. Tave is the average temperature across the rotor profile and is initially ambient temperature during a cold startup of the gas turbine. The thermal stress across the rotor continues until the temperature across the rotor profile reaches equilibrium, which may be 12 hours or longer, and substantially reduces the low cycle fatigue limit of the rotor.
- Various systems and methods are known in the art for reducing the thermal stress across the rotor. For example, a process fluid may be diverted from the compressor to flow through the rotor to decrease the differential temperature between Tmax and Tave and allow the rotor to reach equilibrium temperature in a shorter period of time. However, the diverted fluid decreases the efficiency of the compressor by reducing the amount of compressed working fluid produced by the compressor. In addition, the diverted fluid creates turbulence as it is reintroduced into the compressor airflow, and the turbulence may create laminar separation across the compressor blades. Therefore, an improved system and method for controlling flow through a rotor would be useful.
- Aspects and advantages of the invention are set forth below in the following description, or may be obvious from the description, or may be learned through practice of the invention.
- One embodiment of the present invention is a system for controlling flow through a rotor. The system includes an inlet port in the rotor and an outlet port in the rotor. The outlet port is in fluid communication with the inlet port. A variable orifice is disposed in at least one of the inlet or outlet ports.
- Another embodiment of the present invention is a system for warming a rotor. The system includes a fluid passage through the rotor. A valve is disposed in the fluid passage to control the flow of a fluid through the fluid passage.
- The present invention may also include any method for controlling flow through a rotor. The method includes diverting a process fluid and flowing the diverted process fluid through a fluid passage in the rotor. The method further includes reducing the flow of be diverted process fluid through the fluid passage in the rotor.
- Those of ordinary skill in the art will better appreciate the features and aspects of such embodiments, and others, upon review of the specification.
- A full and enabling disclosure of the present invention, including the best mode thereof to one skilled in the art, is set forth more particularly in the remainder of the specification, including reference to the accompanying figures, in which:
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FIG. 1 is a simplified cross-section view of a rotor according to one embodiment of the present invention; -
FIG. 2 is a perspective view of one side of a rotor wheel shown inFIG. 1 taken along line A-A; and -
FIG. 3 is a perspective view of another side of a rotor wheel shown inFIG. 1 taken along line B-B. - Reference will now be made in detail to present embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention.
- Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof For instance, features illustrated or described as part of one embodiment may be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
- Embodiments within the scope of the present invention provide a system and method for enhancing the expected life of a rotor and improving the efficiency of a gas turbine. In various embodiments, the present invention may control the flow of a fluid through the rotor to warm the rotor, thereby reducing thermal stresses across the rotor profile. The reduced thermal stresses will enhance the low cycle fatigue limits of the rotor. In addition, embodiments within the scope of the present invention enhance the gas turbine efficiency by controlling the amount and/or duration of fluid flow through the rotor.
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FIG. 1 provides a simplified cross-section view of the top half of arotor 10 according to one embodiment of the present invention. As shown, therotor 10 may comprise a plurality ofrotor wheels 12 axially connected by a tie rod 14 to rotate together around acenterline 16. In the compressor section, eachrotor wheel 12 may be associated with a rotatingblade 18 orstationary nozzle 20, as shown inFIG. 1 . Similarly, in the turbine section, eachrotor wheel 12 may be associated with a rotating bucket or stator. - As shown in
FIG. 1 , therotor 10 includes a plurality ofcavities 22 between and throughadjacent rotor wheels 12. Thecavities 22 reduce the total weight of therotor 10. In addition, thecavities 22 provide one or more fluid passages between and aroundadjacent rotor wheels 12. The fluid passages include at least oneinlet port 24 and at least oneoutlet port 26 in fluid communication with theinlet port 24. The inlet and and/oroutlet ports single rotor wheel 12 or betweenadjacent rotor wheels 12. For example, as shown inFIG. 2 , theinlet port 24 oroutlet port 26 may comprise a radial bore hole betweenadjacent rotor wheels 12. In this manner, a fluid may flow through theinlet port 24 into the fluid passage and through and/or around therotor wheels 12 before exiting the fluid passage through theoutlet port 26, as indicated by the flow arrows inFIG. 1 . - A
variable orifice 28 may be disposed in the fluid passage in at least one of the inlet oroutlet ports variable orifice 28 may have a first position that permits fluid flow through at least one of the inlet oroutlet ports outlet ports variable orifice 28 may comprise any suitable mechanism known to one of ordinary skill in the art for preventing or preventing fluid flow. For example, as shown inFIG. 3 , thevariable orifice 28 may comprise a thermally actuatedvalve 30 that responds to temperature changes in therotor wheels 12. As shown inFIG. 3 , thevalve 30 may include apiston 32 or disk connected to adiaphragm 34 inside thevalve 30. At lower temperatures, thediaphragm 34 may contract to retract thepiston 32 or disc into thevalve 30 to place thevariable orifice 28 in the first position that allows or permits fluid flow through at least one of the inlet oroutlet ports rotor wheel 12, and thus therotor 10, increases temperature, thediaphragm 34 may expand to force thepiston 32 or disk out of thevalve 30 to obstruct or completely seal off the associated inlet oroutlet port piston 32 or disk extended into the associated inlet oroutlet port variable orifice 28 is in the second position which reduces or prevents fluid flow through at least one of the inlet oroutlet ports - As shown in
FIG. 1 , thevariable orifice 28 may be connected to acontroller 36 for remote operation of thevariable orifice 28 in alternate embodiments within the scope of the present invention. As described herein, the technical effect of thecontroller 36 is to transmit asignal 38 to thevariable orifice 28 to remotely operate thevariable orifice 28. Thecontroller 36 may be a stand alone component, such as a temperature sensor or timer, or a subcomponent included in any computer system known in the art, such as a laptop, a personal computer, a mini computer, or a mainframe computer. The various controller and computer systems discussed herein are not limited to any particular hardware architecture or configuration. Embodiments of the systems and methods set forth herein may be implemented by one or more general-purpose or customized controllers adapted in any suitable manner to provide the desired functionality. For example, thecontroller 36 may be adapted to provide additional functionality, either complementary or unrelated to the present subject matter. When software is used, any suitable programming, scripting, or other type of language or combinations of languages may be used to implement the teachings contained herein. However, some systems and methods set forth and disclosed herein may also be implemented by hardwired logic or other circuitry, including, but not limited to, application-specific circuits. Of course, various combinations of computer-executed software and hardwired logic or other circuitry may be suitable as well. - The
signal 38 generated by thecontroller 36 may be based on any of several parameters being monitored that are reflective of therotor 10 temperature, thermal gradient across the rotor profile, and/or thermal stresses across therotor 10. For example, thesignal 38 may reflect or be based on a temperature of therotor 10 that indicates that the temperature profile across therotor 10 has reached equilibrium. Similarly, thesignal 38 may reflect or be based on the temperature of the compressed working fluid exiting the compressor or the combustion gases flowing through the turbine that indicates the maximum outer temperature of therotor 10. As another example, thesignal 38 may reflect or be based on a time interval determined through calculations or testing to be a sufficient time for therotor 10 to reach equilibrium. - During operation, the
variable orifice 28 may be in the first or open position during start up of the gas turbine to divert a portion of a process fluid, such as the working fluid flowing through the compressor, through theinlet port 24. The diverted fluid would then flow through the fluid passages in therotor 10, exiting through theoutlet port 26 and returning to the flow of compressed working fluid through the compressor or the combustion gases in the turbine. As the diverted fluid heats up therotor 10, thevariable orifice 28 will eventually close. For example, if thermally actuated, the increased temperature will cause thevariable orifice 28 to reposition to the second or closed position to reduce or prevent the fluid flow through the fluid passages. Alternately, or in addition, thecontroller 36 may generate thesignal 38 to thevariable orifice 28 to reposition thevariable orifice 28 between the first or second positions, as desired. - The systems described and illustrated with respect to
FIGS. 13 may also provide a method for controlling flow through therotor 10. The method may include diverting a process fluid, for example compressed working fluid from the compressor, and flowing the diverted process fluid through fluid passages in therotor 10. The method may further include reducing the flow of the diverted process fluid through the fluid passages in therotor 10, for example based on a predetermined temperature limit or a predetermined time limit. In particular embodiments, thevariable orifice 28 or valve may be used to reduce the flow of the diverted process fluid through the passage in therotor 10, and thecontroller 36 may generate thesignal 38 based on a temperature or time. - This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other and examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (19)
1. A system for controlling flow through a rotor comprising:
a. an inlet port in the rotor;
b. an outlet port in the rotor, wherein the outlet port is in fluid communication with the inlet port;
c. a variable orifice disposed in at least one of the inlet or outlet ports.
2. The system as in claim 1 , further comprising a plurality of passages in the rotor between the inlet port in the outlet port.
3. The system as in claim 1 , wherein the variable orifice comprises a valve.
4. The system as in claim 1 , wherein the variable orifice has a first position and a second position, wherein the first position permits flow through at least one of the inlet or outlet ports, and wherein the second position prevents flow through at least one of the inlet or outlet ports.
5. The system as in claim 1 , further comprising a controller connected to the variable orifice.
6. The system as in claim 5 , wherein the controller generates a signal to the variable orifice, wherein the signal is based on a temperature.
7. The system as in claim 5 , wherein the controller generates a signal to the variable orifice, wherein the signal is based on a time.
8. A system for warming a rotor comprising:
a. a fluid passage through the rotor;
b. a valve disposed in the fluid passage to control the flow of a fluid through the fluid passage.
9. The system as in claim 8 , wherein the valve has a first position and a second position, wherein the first position permits the fluid to flow through the fluid passage, and wherein the second position prevents the fluid from flowing through the passage.
10. The system as in claim 8 , further comprising a controller connected to the valve.
11. The system as in claim 10 , wherein the controller generates a signal to the valve, wherein the signal is based on a temperature.
12. The system as in claim 10 , wherein the controller generates a signal to the valve, wherein the signal is based on a time.
13. A method for controlling flow through a rotor comprising:
a. diverting a process fluid;
b. flowing the diverted process fluid through a fluid passage in the rotor; and
c. reducing the flow of the diverted process fluid through the fluid passage in the rotor.
14. The method as in claim 13 , further comprising diverting the process fluid from a compressor.
15. The method as in claim 13 , further comprising reducing the flow of the diverted process fluid through the fluid passage in the rotor based on a predetermined temperature limit.
16. The method as in claim 13 , further comprising reducing the flow of the diverted process fluid through the fluid passage in the rotor based on a predetermined time limit.
17. The method as in claim 13 , further comprising operating a valve to reduce the flow of the diverted process fluid through the fluid passage in the rotor.
18. The method as in claim 17 , further comprising generating a signal to the valve, wherein the signal is based on a temperature.
19. The method as in claim 17 , further comprising generating a signal to the valve, wherein the signal is based on a time.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US13/005,952 US20120183398A1 (en) | 2011-01-13 | 2011-01-13 | System and method for controlling flow through a rotor |
JP2012001747A JP2012145109A (en) | 2011-01-13 | 2012-01-10 | System and method for controlling flow through rotor |
DE102012100271A DE102012100271A1 (en) | 2011-01-13 | 2012-01-12 | System and method for controlling the flow through a rotor |
FR1250321A FR2970501A1 (en) | 2011-01-13 | 2012-01-12 | SYSTEM AND METHOD FOR REGULATING A FLOW IN A ROTOR |
CN2012100205411A CN102588120A (en) | 2011-01-13 | 2012-01-13 | System and method for controlling flow through a rotor |
Applications Claiming Priority (1)
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US13/005,952 US20120183398A1 (en) | 2011-01-13 | 2011-01-13 | System and method for controlling flow through a rotor |
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US20120183398A1 true US20120183398A1 (en) | 2012-07-19 |
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US13/005,952 Abandoned US20120183398A1 (en) | 2011-01-13 | 2011-01-13 | System and method for controlling flow through a rotor |
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US (1) | US20120183398A1 (en) |
JP (1) | JP2012145109A (en) |
CN (1) | CN102588120A (en) |
DE (1) | DE102012100271A1 (en) |
FR (1) | FR2970501A1 (en) |
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US20130094958A1 (en) * | 2011-10-12 | 2013-04-18 | General Electric Company | System and method for controlling flow through a rotor |
EP2995769A1 (en) * | 2014-09-12 | 2016-03-16 | United Technologies Corporation | Thermal regulation of a turbomachine rotor |
US20170002834A1 (en) * | 2013-07-15 | 2017-01-05 | United Technologies Corporation | Cooled compressor |
US10670039B2 (en) | 2015-04-27 | 2020-06-02 | Mitsubishi Hitachi Power Systems, Ltd. | Compressor rotor, compressor, and gas turbine |
US11008979B2 (en) * | 2019-05-29 | 2021-05-18 | Raytheon Technologies Corporation | Passive centrifugal bleed valve system for a gas turbine engine |
EP4105439A1 (en) * | 2021-06-16 | 2022-12-21 | Toshiba Energy Systems & Solutions Corporation | Throttle mechanism and turbine |
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US20140050558A1 (en) * | 2012-08-15 | 2014-02-20 | General Electric Company | Temperature gradient management arrangement for a turbine system and method of managing a temperature gradient of a turbine system |
US10208764B2 (en) * | 2016-02-25 | 2019-02-19 | General Electric Company | Rotor wheel and impeller inserts |
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- 2012-01-12 DE DE102012100271A patent/DE102012100271A1/en not_active Withdrawn
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Cited By (7)
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US20130094958A1 (en) * | 2011-10-12 | 2013-04-18 | General Electric Company | System and method for controlling flow through a rotor |
US20170002834A1 (en) * | 2013-07-15 | 2017-01-05 | United Technologies Corporation | Cooled compressor |
EP2995769A1 (en) * | 2014-09-12 | 2016-03-16 | United Technologies Corporation | Thermal regulation of a turbomachine rotor |
US10670039B2 (en) | 2015-04-27 | 2020-06-02 | Mitsubishi Hitachi Power Systems, Ltd. | Compressor rotor, compressor, and gas turbine |
US11008979B2 (en) * | 2019-05-29 | 2021-05-18 | Raytheon Technologies Corporation | Passive centrifugal bleed valve system for a gas turbine engine |
EP4105439A1 (en) * | 2021-06-16 | 2022-12-21 | Toshiba Energy Systems & Solutions Corporation | Throttle mechanism and turbine |
US11719116B2 (en) | 2021-06-16 | 2023-08-08 | Toshiba Energy Systems & Solutions Corporation | Throttle mechanism and turbine |
Also Published As
Publication number | Publication date |
---|---|
DE102012100271A1 (en) | 2012-07-19 |
CN102588120A (en) | 2012-07-18 |
FR2970501A1 (en) | 2012-07-20 |
JP2012145109A (en) | 2012-08-02 |
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