WO2017073565A1 - 回転機械及び回転機械の制御方法 - Google Patents

回転機械及び回転機械の制御方法 Download PDF

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Publication number
WO2017073565A1
WO2017073565A1 PCT/JP2016/081594 JP2016081594W WO2017073565A1 WO 2017073565 A1 WO2017073565 A1 WO 2017073565A1 JP 2016081594 W JP2016081594 W JP 2016081594W WO 2017073565 A1 WO2017073565 A1 WO 2017073565A1
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WO
WIPO (PCT)
Prior art keywords
thrust bearing
thrust
load
axial direction
collar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/081594
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
高善 飯島
橋本　真也
片岡　正人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Power Ltd
Original Assignee
Mitsubishi Hitachi Power Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Hitachi Power Systems Ltd filed Critical Mitsubishi Hitachi Power Systems Ltd
Priority to CN201680061903.8A priority Critical patent/CN108350754B/zh
Priority to DE112016004991.9T priority patent/DE112016004991T5/de
Priority to US15/770,645 priority patent/US10619512B2/en
Priority to KR1020187011585A priority patent/KR102039875B1/ko
Publication of WO2017073565A1 publication Critical patent/WO2017073565A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162—Bearing supports
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/166—Sliding contact bearing
    • F01D25/168—Sliding contact bearing for axial load mainly
    • 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
    • F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
    • F01D3/04—Machines or engines with axial-thrust balancing effected by working-fluid axial thrust being compensated by thrust-balancing dummy piston or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/26—Systems consisting of a plurality of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/1045—Details of supply of the liquid to the bearing
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F05D2240/52—Axial thrust bearings
    • 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
    • F05D2260/00—Function
    • F05D2260/15—Load balancing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/23—Gas turbine engines
    • F16C2360/24—Turbochargers

Definitions

  • the present invention relates to a rotating machine and a method for controlling the rotating machine.
  • This application claims priority in Japanese Patent Application No. 2015-212134 for which it applied on October 28, 2015, and uses the content here.
  • Patent Document 1 describes a device in which a piston is provided at an end of a rotor and the piston is moved in the axial direction by hydraulic pressure in order to reduce the thrust load of the rotor.
  • An object of the present invention is to provide a rotating machine capable of dealing with an excessive thrust load and a method of controlling the rotating machine in a rotating machine having a thrust bearing device that receives a thrust load of a rotor.
  • the rotating machine includes a first thrust collar and a second thrust collar protruding radially outward, a rotor extending in the axial direction, and the first thrust collar.
  • the first thrust bearing device that receives the load applied in the axial direction
  • the second thrust bearing device that receives the load applied in the axial direction via the second thrust collar, the first thrust bearing device, and the second thrust bearing
  • a load control device that controls a load applied to at least one of the devices.
  • the load applied to both thrust bearing devices is controlled by controlling the load applied to at least one of the first thrust bearing device and the second thrust bearing device. Can be averaged to handle excessive loads.
  • the second thrust bearing device includes a second thrust bearing body that supports a surface of the second thrust collar facing the axial direction
  • the load control device includes the second thrust bearing body. You may have the drive device pressed in the said axial direction.
  • the second thrust bearing body includes a bearing pad that supports a load from the second thrust collar and a carrier ring that supports the bearing pad, and the driving device includes the bearing pad. May be pressed.
  • the second thrust bearing body includes a bearing pad that supports a load from the second thrust collar, and a carrier ring that supports the bearing pad, and the driving device includes the carrier ring. May be pressed.
  • the second thrust bearing body may be disposed only on one side of the second thrust collar in the axial direction.
  • the number of thrust bearing bodies can be reduced by not disposing the thrust bearing bodies on both sides of the thrust collar.
  • the first thrust bearing device includes a first thrust bearing body that supports a surface of the first thrust collar facing the axial direction, and the first thrust bearing body includes the first thrust collar. May be disposed on both sides in the axial direction.
  • the thrust load of the rotor can be received even when the rotor is pressed in any axial direction.
  • the load control device includes a first oil supply system that supplies oil to the drive device, and a controller that controls oil pressure of the oil, and the drive device is configured to perform the operation according to the oil pressure. It is good also as a structure which presses a 2nd thrust bearing main body in the reverse direction to the direction of the load concerning said 2nd thrust bearing apparatus.
  • the drive device includes a drive rod having a pressing portion that presses the second thrust bearing body, and an elastic member that biases the drive rod in a direction in which the pressing portion is separated from the second thrust bearing body. And may be provided.
  • the drive rod can be returned in a direction away from the second thrust bearing body in a state where the hydraulic pressure of the drive device is low.
  • At least one of the first thrust bearing body and the second thrust bearing body has a bearing pad facing a surface of the thrust collar facing the axial direction, and the bearing pad and the thrust collar You may have the 2nd oil supply system which supplies circulating oil between the surfaces which face an axial direction.
  • the hydraulic pressure can be controlled independently by the presence of the two systems of the system that supplies the lubricating oil and the system that supplies the hydraulic oil as the system that supplies the oil.
  • a rotating machine control method includes: a rotor extending in an axial direction; and a first thrust bearing and a second thrust bearing that receive a load applied to the rotor in the axial direction.
  • the rotating machine comprising: a first operation step for receiving the load mainly by a first thrust bearing; a load monitoring step for monitoring the load; and the first thrust bearing when the load reaches a predetermined value. And a second operation step of receiving the load with the second thrust bearing.
  • a gas turbine 1 which is a rotating machine according to an embodiment of the present invention will be described in detail with reference to the drawings.
  • a gas turbine 1 includes a compressor 20 that compresses air A, a combustor 10 that burns fuel F in the air compressed by the compressor 20 to generate combustion gas, and a combustion gas. And a turbine 40 driven by the above.
  • the compressor 20 includes a compressor rotor 21 that rotates about an axis Ar, a compressor casing 25 that covers the compressor rotor 21, and a plurality of stationary blade stages 26.
  • the turbine 40 includes a turbine rotor 41 that rotates about an axis Ar, a turbine casing 45 that covers the turbine rotor 41, and a plurality of stationary blade stages 46.
  • the compressor rotor 21 and the turbine rotor 41 are located on the same axis Ar, and are connected to each other to form a gas turbine rotor 2 (hereinafter referred to as the rotor 2).
  • the rotor 2 extends in the axial direction.
  • a rotor of a generator is connected to the rotor 2.
  • the compressor casing 25 and the turbine casing 45 are connected to each other to form the gas turbine casing 3.
  • the direction in which the rotor 2 serving as the rotation axis extends (the direction along the axis Ar shown in FIG. 1) is defined as the axial direction.
  • a direction perpendicular to the axis Ar is defined as a radial direction, a side away from the axis Ar in the radial direction is referred to as a radially outer side, and a side closer to the axis Ar in the radial direction is referred to as a radially inner side.
  • the compressor 20 side is referred to as an upstream side with respect to the turbine 40, and the turbine 40 side is referred to as a downstream side with respect to the compressor 20.
  • the compressor rotor 21 includes a rotor shaft 22 that extends in the axial direction about the axis Ar, and a plurality of blade stages 23 that are attached to the rotor shaft 22.
  • the plurality of blade stages 23 are arranged in the axial direction.
  • Each blade stage 23 is composed of a plurality of blades 23a arranged in the circumferential direction.
  • a stationary blade stage 26 is disposed on each downstream side of the plurality of blade stages 23.
  • Each stationary blade stage 26 is provided inside the compressor casing 25.
  • Each stationary blade stage 26 includes a plurality of stationary blades 26a arranged in the circumferential direction.
  • the turbine rotor 41 has a rotor shaft 42 that extends in the axial direction about the axis Ar, and a plurality of blade stages 43 that are attached to the rotor shaft 42.
  • the plurality of blade stages 43 are arranged in the axial direction.
  • Each blade stage 43 is composed of a plurality of blades 43a arranged in the circumferential direction.
  • a stationary blade stage 46 is disposed on each upstream side of the plurality of blade stages 43.
  • Each stationary blade stage 46 is provided inside the turbine casing 45.
  • Each stationary blade stage 46 includes a plurality of stationary blades 46a arranged in the circumferential direction.
  • the annular space between the outer peripheral side of the rotor shaft 42 and the inner peripheral side of the turbine casing 45 and in which the stationary blades 46a and the moving blades 43a are disposed is a gas flow through which the combustion gas from the combustor 10 flows.
  • the gas flow path 9 has an annular shape around the axis Ar and is long in the axial direction.
  • the gas turbine 1 includes a first bearing device 5 that rotatably supports the rotor 2, a second bearing device 6, and a load control device 16.
  • the first bearing device 5 is provided at the upstream end of the rotor 2.
  • the second bearing device 6 is provided at the downstream end of the rotor 2.
  • the first bearing device 5 includes a first journal bearing device 11, a first thrust bearing device 31, a second thrust bearing device 32, and a first lubricating oil supply device 13 (second oil supply system). ing.
  • the journal bearing device 11 is fixed to the casing 7 and regulates the movement of the rotor 2 in the radial direction.
  • the first thrust bearing device 31 and the second thrust bearing device 32 are fixed to the casing 7, receive the axial load of the rotor 2, and restrict the axial movement of the rotor 2 relative to the casing 7.
  • the first lubricating oil supply device 13 supplies lubricating oil to the first journal bearing device 11 and the thrust bearing devices 31 and 32 via the lubricating oil supply line 28.
  • the lubricating oil used for lubrication in the bearing device is collected through the lubricating oil collection line 29 and used again for lubrication. As a result, the lubricating oil circulates in the bearing devices 11, 31 and 32.
  • the lubricating oil used in the first thrust bearing device 31 is recovered through the first lubricating oil recovery line 29A.
  • the lubricating oil used in the second thrust bearing device 32 is recovered through the second lubricating oil recovery line 29B.
  • the first lubricating oil recovery line 29A is provided with a temperature measuring device 30 that measures the temperature of the lubricating oil flowing through the first lubricating oil recovery line 29A.
  • the second bearing device 6 includes a second journal bearing device 14 and a second lubricating oil supply device 15.
  • the first thrust bearing device 31 has a pair of first thrust bearing bodies 33.
  • the first thrust bearing body 33 is provided corresponding to the first thrust collar 35 formed in the rotor 2.
  • the first thrust collar 35 protrudes radially outward from the outer peripheral surface of the rotor 2.
  • the first thrust bearing device 31 receives a thrust load applied in the axial direction via the first thrust collar 35.
  • the first thrust bearing body 33 is disposed on the upstream side and the downstream side in the axial direction with the first thrust collar 35 interposed therebetween. That is, the first thrust bearing body 33 is disposed on both sides of the first thrust collar 35 in the axial direction.
  • the rotor 2 is pressed toward the downstream side in the axial direction as the output of the gas turbine 1 increases. That is, of the pair of first thrust bearing bodies 33, the first thrust bearing body 33 disposed mainly on the downstream side in the axial direction receives the thrust load.
  • the first thrust bearing body 33 is disposed so as to face the surface 35A facing the axial direction of the first thrust collar 35.
  • the first thrust bearing body 33 is a tilting pad bearing, and includes a plurality of bearing pads 50 that support a load from the first thrust collar 35 and a carrier ring 51 that supports the bearing pad 50.
  • the plurality of bearing pads 50 have the same shape, and are arranged symmetrically with respect to the axis Ar at equal intervals in the circumferential direction around the rotor 2 at a position facing the surface 35A facing the axial direction of the first thrust collar 35. .
  • Lubricating oil is supplied to the bearing pad 50 from the first lubricating oil supply device 13, and a lubricating oil film is formed between the first thrust collar 35 and the bearing pad 50. Thereby, the friction etc. which arise between the 1st thrust collar 35 and the bearing pad 50 at the time of rotation of the 1st thrust collar 35 can be reduced.
  • the plurality of bearing pads 50 do not necessarily have the same shape. Further, the plurality of bearing pads 50 need not be arranged symmetrically with respect to the axis Ar. For example, the circumferential widths of the bearing pad 50 disposed above and the bearing pad 50 disposed below may be different.
  • the second thrust bearing device 32 has a second thrust bearing body 34.
  • the second thrust bearing device 32 receives a thrust load applied in the axial direction via the second thrust collar 36.
  • the second thrust bearing body 34 is disposed on the downstream side in the axial direction of the second thrust collar 36. That is, the second thrust bearing body 34 is arranged on one side of the second thrust collar 36 in the axial direction. In other words, the second thrust bearing body 34 is disposed in the direction in which the second thrust collar 36 moves as the output of the gas turbine 1 increases.
  • the second thrust bearing body 34 includes a bearing pad 50 and a carrier ring 51. Since the second thrust bearing body 34 has the same configuration as the first thrust bearing body 33, the description thereof is omitted.
  • the load control device 16 controls the thrust load applied to the first thrust bearing device 31 by pressing the second thrust bearing main body 34 in the direction opposite to the direction of the thrust load applied to the second thrust bearing device 32 by hydraulic pressure.
  • the load control device 16 includes a drive device 17 driven by hydraulic pressure, a hydraulic oil supply device 18 (first oil supply system), and a controller 19.
  • the drive device 17 includes a box 53, a plate 55 disposed inside the box 53, a plurality of drive rods 54 driven along with the movement of the plate 55, and a spring 56 (an elastic member, Compression coil spring).
  • the hydraulic oil supply device 18 is a device that supplies hydraulic oil to the inside of the box 53.
  • the drive device 17 is an actuator that drives the drive rod 54 in the axial direction by the pressure of the high-pressure hydraulic oil supplied from the hydraulic oil supply device 18.
  • the driving device 17 is fixed to the casing 7.
  • the box 53 extends in the circumferential direction so as to surround the rotor 2, and is disposed between the second thrust bearing body 34 and the casing 7.
  • the plate 55 is accommodated in the box 53, and divides the internal space of the box 53 into a first space A1 on the upstream side in the axial direction and a second space A2 on the downstream side in the axial direction. When the hydraulic oil is supplied to the second space A2, the plate 55 moves to the upstream side in the axial direction.
  • the plurality of drive rods 54 are arranged symmetrically with respect to the axis Ar (see FIG. 2) at equal intervals in the circumferential direction around the rotor 2.
  • a pressing portion 57 is provided at the end of the drive rod 54 on the upstream side in the axial direction.
  • the end of the drive rod 54 on the downstream side in the axial direction is connected to the plate 55.
  • the pressing portion 57 is disposed so as to press the second thrust bearing body 34 toward the upstream side in the axial direction. That is, when the drive rod 54 moves together with the plate 55 to the upstream side in the axial direction, the pressing portion 57 presses the second thrust bearing body 34. Thereby, the 2nd thrust bearing main body 34 is pressed to the axial direction upstream.
  • the plurality of drive rods 54 need not be arranged symmetrically with respect to the axis Ar. Since the driving device 17 is fixed to the casing 7, the second thrust bearing body 34 moves relative to the casing 7.
  • the spring 56 is an elastic member having a coil shape and is a compression coil spring.
  • the spring 56 is disposed between the wall portion 53 ⁇ / b> A on the upstream side in the axial direction of the box 53 and the plate 55.
  • the plate 55 is urged in a direction away from the wall portion 53 ⁇ / b> A on the upstream side in the axial direction of the box 53 by the elastic force of the compressed spring 56 returning to its original state. That is, the spring 56 biases the driving rod 54 (pressing portion 57) of the driving device 17 in the direction of immersing into the box 53.
  • the pressing portion 57 moves in a direction away from the second thrust bearing body 34.
  • the spring 56 is employed as the elastic member, but the present invention is not limited to this. For example, a leaf spring or an elastomer may be used.
  • the controller 19 is a computer that controls the hydraulic oil supply device 18.
  • the controller 19 has a function of monitoring the output of the gas turbine 1, the temperature measured by the temperature measuring device 30, and the like.
  • the casing 7 is provided with a sealing device 37 for sealing a space between the first thrust collar 35 (see FIG. 2) and the second thrust collar 36.
  • the seal device 37 includes a ring-shaped seal device main body 38 disposed on the inner peripheral surface of the casing 7, and a plurality of seal fins 39 protruding from the seal device main body 38 toward the outer peripheral surface of the rotor 2. .
  • the gas turbine 1 includes thrust bearing devices 31 and 32 that receive a thrust load (force acting in the axial direction) of the rotor 2.
  • the load control device 16 has a function of dispersing the thrust load by pressing the second thrust bearing device 32 in the axial direction when a thrust load exceeding the allowable value of the first thrust bearing device 31 is generated. .
  • the control method of the load control device 16 is mainly a first operation step in which the load is received by the first thrust bearing device 31, a load monitoring step in which the load is monitored, and when the load reaches a predetermined value, And a second operation step in which a load is received by the thrust bearing device 31 and the second thrust bearing device 32.
  • the controller 19 monitors the output of the gas turbine 1.
  • the output of the gas turbine 1 is proportional to the thrust load applied to the first thrust bearing device 31, the thrust load increases as the output of the gas turbine 1 increases.
  • the method of monitoring the thrust load is not limited to the method of monitoring the output, but may be a method of monitoring a parameter corresponding to or proportional to the thrust load.
  • the thrust load itself the rotational speed of the rotating machine, the metal temperature of the rotating machine or the member of the bearing, the waste oil temperature of the bearing, or a combination thereof may be monitored.
  • the method of monitoring the thrust load may be a method of monitoring the casing pressure of the gas turbine 1 or the pressure ratio of the compressor 20.
  • the controller 19 When the controller 19 detects that the output of the gas turbine 1 has reached a predetermined output value P, the controller 19 moves the second thrust bearing device 32 as a second operation step. In the second operation process, the controller 19 instructs the hydraulic oil supply device 18 to supply the hydraulic oil to the box 53 of the drive device 17. Thereby, the plate 55 moves in the axial direction upstream side, and the pressing portion 57 presses the carrier ring 51 of the second thrust bearing main body 34. As a result, the bearing pad 50 is pressed against the second thrust collar 36, and the second thrust bearing device 32 functions.
  • the output value P of the gas turbine referred to in the second operation process is determined based on the rated load of the first thrust bearing body 33.
  • the output value P can be set using the output of the gas turbine 1 when the thrust load applied to the first thrust bearing body 33 reaches the rated load, for example.
  • the load control device 16 can adjust the pressing force for pressing the second thrust bearing body 34 by the pressing portion 57 according to the output of the gas turbine 1.
  • the pressing force can be increased as the output becomes higher than the output value P described above.
  • the thrust load applied to the first thrust bearing device 31 is controlled by pressing the second thrust bearing body 34.
  • the loads of the thrust bearing devices 31 and 32 can be averaged.
  • a thrust bearing device can be made to respond to an excessive load.
  • the plurality of drive rods 54 are connected to the plate 55 extending in the circumferential direction, the pressing force of the plurality of pressing portions 57 can be averaged. Further, by providing the drive device 17 with the spring 56, the drive rod 54 can be immersed in the box 53 in a state where the hydraulic pressure in the second space A2 is low.
  • the second thrust bearing body 34 is disposed only on one side of the second thrust collar 36 in the axial direction. By not disposing the thrust bearing body on both sides of the thrust collar, the number of thrust bearing bodies can be reduced. In other words, since the second thrust bearing device 32 is used only when an excessive thrust load is applied to the first thrust bearing device 31, the thrust bearing device is installed in a direction in which no thrust load is applied when the thrust load is excessive. There is no need to place them.
  • the oil supply system there are two systems of the lubricating oil supply devices 13 and 15 that supply the lubricating oil and the hydraulic oil supply device 18 that supplies the hydraulic oil, so that the hydraulic pressure can be independently set. Can be controlled. Further, when the first thrust bearing body 33 is arranged on both axial sides of the first thrust collar 35, the rotor 2 is pressed upstream in the axial direction, such as when the output of the gas turbine 1 is low. In this case, the thrust load of the rotor 2 can be received.
  • the first thrust bearing body 33 may be pressed.
  • the load control device 16 is controlled based on the output of the gas turbine 1, but is not limited thereto.
  • the temperature of the lubricating oil used in the first thrust bearing device 31 increases in proportion to the thrust load applied to the first thrust bearing device 31. Therefore, the load control device 16 may be controlled based on the temperature of the lubricating oil measured by the temperature measuring device 30 provided in the first lubricating oil recovery line 29A.
  • the controller 19 detects that the temperature of the lubricating oil flowing through the first lubricating oil recovery line 29A has reached a predetermined temperature, the controller 19 executes the second operation process.
  • the load control device 16 can be controlled based on the temperature of the lubricating oil that reflects the load of the thrust bearing device. Further, the provision of the sealing device 37 prevents the lubricating oil used in the first thrust bearing device 31 from being mixed with the lubricating oil used in the second thrust bearing device 32. it can. Thereby, the temperature of the lubricating oil used in the first thrust bearing device 31 can be measured more accurately.
  • the elements referred to for controlling the load control device 16 are not limited to the output of the gas turbine 1 and the temperature of the lubricating oil.
  • the metal temperature of the casing 7, the pressure in the vehicle interior, and the rotation speed of the gas turbine 1 may be referred to.
  • the drive unit 17 is configured to press the carrier ring 51 of the second thrust bearing body 34, but is not limited thereto.
  • the drive device 17 of this modification is configured such that the pressing portion 57 of the drive rod 54 of the drive device 17 directly presses the bearing pad 50 of the second thrust bearing body 34.
  • the drive rod 54 passes through a through hole 51 ⁇ / b> A formed in the carrier ring 51 of the second thrust bearing body 34.
  • the pressing portion 57 is separated from the second thrust bearing body 34 by applying the elastic force of the spring 56 that is a compression coil spring so that the wall portion 53A and the plate 55 are separated from each other.
  • the present invention is not limited to this.
  • the drive device 17 of this modification includes a spring 56 ⁇ / b> C that connects the back surface 57 ⁇ / b> A of the pressing portion 57 and the wall portion 53 ⁇ / b> B on the downstream side in the axial direction of the box 53.
  • the spring 56C of this embodiment is a tension coil spring.
  • One end of the spring 56 ⁇ / b> C is fixed to the back surface 57 ⁇ / b> C of the pressing portion 57 via a fixing portion 58.
  • the other end of the spring 56C is fixed to the wall portion 53B of the box 53 via a fixing portion 59.
  • the elastic force of the stretched spring 56C returning to the original force biases the pressing portion 57 and the wall portion 53B toward each other. That is, the spring 56 ⁇ / b> C urges the drive rod 54 (pressing portion 57) of the drive device 17 in the direction of immersing into the box 53. As a result, the pressing portion 57 moves in a direction away from the second thrust bearing body 34. According to this modification, the plate 55 included in the driving device 17 of the first embodiment can be omitted.
  • the gas turbine is exemplified as the rotating machine.
  • the rotating machine has a rotor that generates a thrust load
  • the present invention is applied to other rotating machines such as a steam turbine and an axial compressor. You may apply.
  • both the first thrust bearing device 31 and the second thrust bearing device 32 are tilting pad bearings.
  • the present invention is not limited to this.
  • one of the first thrust bearing device 31 and the second thrust bearing device 32 may be a thrust roller bearing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Support Of The Bearing (AREA)
  • Sliding-Contact Bearings (AREA)
PCT/JP2016/081594 2015-10-28 2016-10-25 回転機械及び回転機械の制御方法 Ceased WO2017073565A1 (ja)

Priority Applications (4)

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CN201680061903.8A CN108350754B (zh) 2015-10-28 2016-10-25 旋转机械以及旋转机械的控制方法
DE112016004991.9T DE112016004991T5 (de) 2015-10-28 2016-10-25 Rotationsmaschine und verfahren zum steuern einer rotationsmaschine
US15/770,645 US10619512B2 (en) 2015-10-28 2016-10-25 Rotary machine and method for controlling rotary machine
KR1020187011585A KR102039875B1 (ko) 2015-10-28 2016-10-25 회전 기계 및 회전 기계의 제어 방법

Applications Claiming Priority (2)

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JP2015-212134 2015-10-28
JP2015212134A JP6596749B2 (ja) 2015-10-28 2015-10-28 回転機械及び回転機械の制御方法

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JP (1) JP6596749B2 (https=)
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GB2547008B (en) * 2016-02-04 2020-07-29 Rolls Royce Plc Balancing of axial thrust forces within a gas turbine engine
PL3370052T3 (pl) * 2017-03-01 2021-11-15 Christoph Böhmer Betriebsverpachtung Gmbh Wyważarka
KR101914877B1 (ko) * 2017-09-08 2018-11-02 두산중공업 주식회사 회전축의 지지 구조체 및 이를 포함하는 터빈 및 가스터빈
JP7231437B2 (ja) * 2019-02-20 2023-03-01 三菱重工業株式会社 油浴型軸受装置及び回転機械
US10578159B1 (en) * 2019-04-05 2020-03-03 Florida Turbine Technologies, Inc. Self-metering hydrostatic thrust bearing
JP2021110289A (ja) * 2020-01-10 2021-08-02 東芝エネルギーシステムズ株式会社 タービンおよびスラスト力調整方法
JP7370280B2 (ja) * 2020-02-28 2023-10-27 三菱重工マリンマシナリ株式会社 蒸気タービンのロータのターニング方法およびターニング治具
EP3916255B1 (en) * 2020-05-26 2022-10-05 Siemens Energy Global GmbH & Co. KG Multi-stage axial bearings for turbines
CN114320500B (zh) * 2022-01-06 2023-05-12 西安航空学院 一种大功率涡轮空气马达
CN114607696A (zh) * 2022-03-25 2022-06-10 西安热工研究院有限公司 一种机械密封和推力轴承组合承载装置

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KR20180059512A (ko) 2018-06-04
JP6596749B2 (ja) 2019-10-30
US20180320551A1 (en) 2018-11-08
CN108350754A (zh) 2018-07-31
US10619512B2 (en) 2020-04-14
DE112016004991T5 (de) 2018-07-19
JP2017082690A (ja) 2017-05-18
CN108350754B (zh) 2020-12-11
KR102039875B1 (ko) 2019-11-04

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