WO2016067864A1 - 配管システム、蒸気タービンプラント、及び配管システムのクリーニング方法 - Google Patents
配管システム、蒸気タービンプラント、及び配管システムのクリーニング方法 Download PDFInfo
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- WO2016067864A1 WO2016067864A1 PCT/JP2015/078528 JP2015078528W WO2016067864A1 WO 2016067864 A1 WO2016067864 A1 WO 2016067864A1 JP 2015078528 W JP2015078528 W JP 2015078528W WO 2016067864 A1 WO2016067864 A1 WO 2016067864A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- steam
- central axis
- pressure
- flow path
- Prior art date
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Classifications
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/165—Controlling means specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
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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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
Definitions
- the present invention relates to a piping system, a steam turbine plant, and a cleaning method for the piping system.
- the steam turbine plant includes a steam turbine and a piping system having piping through which steam flows.
- the piping of the piping system includes a steam piping through which steam supplied to the steam turbine flows and a bypass piping branched from the steam piping.
- the steam generated by the steam generator including the heating unit is supplied to the steam turbine through the steam piping of the piping system.
- Blowing out is performed to remove foreign matter from the piping after the construction for the construction of the steam turbine plant, after the remodeling, after a long-term shutdown, and before starting the steam turbine plant.
- Blowing out includes a process of supplying steam to the piping. Foreign matter in the pipe is blown away by the steam supplied to the pipe. Thereby, the foreign substance of piping is removed.
- the steam supplied to the piping in the blowing out is free blown (atmospheric release).
- An object of an aspect of the present invention is to provide a piping system, a steam turbine plant, and a piping system cleaning method capable of suppressing an increase in time required for blowing out.
- a piping system for a steam turbine plant the first pipe part having a first flow path, the second pipe part having a second flow path, and the first pipe part.
- a connecting portion having a connecting flow path that is disposed between the first pipe and the second pipe section and connects the first flow path and the second flow path, and a third flow path that is connected to the connecting flow path through an opening.
- a third pipe part having a pipe member for supplying steam to the first pipe part, a steam stop valve connected to the third pipe part, and the second pipe part.
- An angle formed by a first central axis of the first pipe portion and a second central axis of the second pipe portion is a third center of the first central axis and the third pipe portion.
- a piping system is provided that is greater than the angle formed by the shaft.
- the angle formed by the first central axis of the first pipe portion and the second central axis of the second pipe portion is the first central axis and the third central axis of the third pipe portion.
- first central axis and the second central axis may be parallel.
- the first central axis and the second central axis may coincide with each other.
- the first tube portion and the second tube portion are formed in a straight tube shape, and the movement of the foreign matter in the first tube portion to the third tube portion is sufficiently suppressed.
- the first central axis and the third central axis may be orthogonal to each other.
- the opening may be disposed above the central axis of the connecting portion.
- entrance of the said steam stop valve into which the said steam from the said 3rd pipe part flows in may be arrange
- the second pipe part may be disposed above the first pipe part.
- a steam turbine plant provided with the piping system of the first aspect is provided.
- a cleaning method for a piping system of a steam turbine plant wherein the piping system includes a first pipe portion having a first flow path and a second pipe having a second flow path.
- a connecting portion having a connecting flow path disposed between the first pipe portion and the second pipe portion and connecting the first flow path and the second flow path, and the connection flow through the opening.
- a third pipe portion having a third flow path connected to the path, and an angle formed by a first central axis of the first pipe portion and a second central axis of the second pipe portion is the first Connected to a pipe member larger than an angle formed by a central axis and a third central axis of the third pipe part, a steam generator connected to the first pipe part, and the third pipe part cleaned inside A closed steam stop valve, and a turbine bypass valve connected to the second pipe portion, and closing the steam stop valve;
- the angle formed by the first central axis of the first pipe part and the second central axis of the second pipe part is the first central axis and the third central axis of the third pipe part. Therefore, when the steam is supplied from the steam generating device to the first pipe part, the steam in the first pipe part is supplied exclusively to the second pipe part. Thereby, the foreign matter is discharged from the foreign matter and the second tube portion of the first pipe portion, and the first pipe portion and the second pipe portion are cleaned.
- the third tube is cleaned in advance. Since the amount of foreign matter moving from the first pipe part to the third pipe part is suppressed, contamination of the third pipe part is suppressed.
- the supply of steam from the steam generator is performed with the steam stop valve closed.
- the steam generating device includes a test for closing the steam stop valve, and after the test, the steam stop valve is closed and the steam stop valve is closed.
- the cleaning may be performed by supplying steam.
- a test called an interlock test is performed on the steam stop valve disposed in the steam pipe connected to the steam turbine.
- the interlock test is a test for confirming whether or not the steam stop valve can be normally closed based on a trip signal. After being confirmed to be normal, the steam stop valve is closed, so that foreign matter is prevented from moving to the steam turbine via the steam pipe. Further, since the steam pipe and the steam stop valve are not blown out, it is not necessary to disassemble the steam stop valve. Therefore, the number of times of performing the interlock test can be suppressed to a necessary minimum. Therefore, prolonged time required for blowing out is suppressed.
- a piping system capable of suppressing an increase in time required for blowing out.
- FIG. 1 is a diagram schematically illustrating an example of a steam turbine plant according to the first embodiment.
- FIG. 2 is a diagram schematically illustrating an example of the steam turbine plant according to the first embodiment.
- FIG. 3 is a perspective view illustrating an example of a piping member according to the first embodiment.
- FIG. 4 is a cross-sectional view illustrating an example of a piping member according to the first embodiment.
- FIG. 5 is a perspective view schematically showing an example of the piping system according to the first embodiment.
- FIG. 6 is a perspective view schematically showing an example of the piping system according to the first embodiment.
- FIG. 7 is an enlarged cross-sectional view of a part of the piping of the piping system according to the first embodiment.
- FIG. 8 is an enlarged cross-sectional view of a part of the piping of the piping system according to the first embodiment.
- FIG. 9 is a diagram schematically illustrating an example of the steam turbine plant according to the first embodiment.
- FIG. 10 is a perspective view schematically showing an example of the piping system according to the first embodiment.
- FIG. 11 is a cross-sectional view schematically illustrating an example of a high-pressure turbine bypass valve according to the first embodiment.
- FIG. 12 is a cross-sectional view schematically illustrating an example of a state in which the high-pressure turbine bypass valve according to the first embodiment is disassembled.
- FIG. 13 is a diagram for explaining an example of blowing out according to the first embodiment.
- FIG. 14 is a diagram for explaining an example of blowing out according to the first embodiment.
- FIG. 15 is a flowchart illustrating an example of a piping system cleaning method according to the first embodiment.
- FIG. 16 is a perspective view schematically illustrating an example of a piping system according to the second embodiment.
- FIG. 17 is a perspective view schematically showing an example of a piping system according to the third embodiment.
- FIG. 18 is a perspective view schematically showing an example of a piping system according to the fourth embodiment.
- FIG. 19 is a perspective view schematically showing an example of a piping system according to the fifth embodiment.
- FIG. 20 is a perspective view schematically illustrating an example of a piping system according to the sixth embodiment.
- FIG. 21 is a perspective view schematically showing an example of a piping system according to the seventh embodiment.
- FIG. 16 is a perspective view schematically illustrating an example of a piping system according to the second embodiment.
- FIG. 17 is a perspective view schematically showing an example of a piping system according to the third embodiment.
- FIG. 18 is a
- FIG. 22 is a perspective view schematically showing an example of a piping system according to the eighth embodiment.
- FIG. 23 is a perspective view schematically showing an example of a piping system according to the ninth embodiment.
- FIG. 24 is a perspective view schematically showing an example of a piping system according to the tenth embodiment.
- FIG. 25 is a cross-sectional view schematically showing an example of the piping member according to the eleventh embodiment.
- FIG. 26 is a cross-sectional view schematically illustrating an example of a piping member according to the twelfth embodiment.
- FIG. 27 is a cross-sectional view schematically illustrating an example of a piping member according to the thirteenth embodiment.
- FIG. 1 is a diagram schematically illustrating an example of a steam turbine plant 1 according to the present embodiment.
- the steam turbine plant 1 includes a steam turbine 10, a steam generation device 20 that generates steam, and a piping system 1000 having piping through which the steam flows.
- the steam turbine 10 includes a high-pressure turbine 11, an intermediate-pressure turbine 12, and a low-pressure turbine 13.
- the steam generator 20 includes a high-pressure heating unit 21, an intermediate-pressure heating unit 22, a low-pressure heating unit 23, and a reheating unit 24.
- the steam turbine plant 1 is combined with a gas turbine and an exhaust heat recovery boiler.
- the heat recovery steam generator (Heat Recovery Steam Generator: HRSG) generates steam using high-temperature exhaust gas discharged from the gas turbine.
- the steam generator 20 includes an exhaust heat recovery boiler. The steam generator 20 generates steam using the exhaust gas discharged from the gas turbine.
- Steam generated by the steam generator 20 is supplied to the steam turbine 10 via the piping system 1000.
- the steam turbine 10 is operated by the supplied steam.
- a generator (not shown) is connected to the steam turbine 10.
- the generator is driven by the operation of the steam turbine 10. Thereby, power generation is performed.
- the steam turbine plant 1 is used as part of a gas turbine combined cycle (GTCC) power plant.
- GTCC gas turbine combined cycle
- the steam turbine plant 1 may be a conventional thermal power generation facility that does not use gas turbine exhaust heat as a heat source.
- the use is not limited to a power generation use,
- a steam turbine plant provided with the steam turbine for machine drive may be sufficient.
- the working fluid is not limited to water, and may be a steam turbine plant using an organic medium that evaporates at a lower temperature than water, for example.
- the high pressure heating unit 21 includes a drum and a high pressure superheater.
- the high pressure heating unit 21 generates high pressure steam.
- the medium pressure heating unit 22 includes a drum and a medium pressure superheater.
- the medium pressure heating unit 22 generates medium pressure steam.
- the low pressure heating unit 23 includes a drum and a low pressure superheater.
- the low pressure heating unit 23 generates low pressure steam.
- the reheat unit 24 includes a reheater. The reheating unit 24 heats the steam discharged from the high-pressure turbine 11 and the steam supplied from the intermediate pressure heating unit 22.
- the piping system 1000 includes a steam pipe 30 through which steam supplied to the steam turbine 10 flows, and a bypass pipe 40 branched from the steam pipe 30.
- the piping system 1000 includes a low-temperature reheat steam pipe 51 connected to the outlet of the high-pressure turbine 11 and a pipe 52 connecting the outlet of the intermediate-pressure turbine 12 and the low-pressure steam pipe 33.
- Steam generated by the steam generator 20 is supplied to the steam turbine 10 via the steam pipe 30 of the piping system 1000.
- steam turbine plant 1 When the steam turbine plant 1 is started or when the pressure of the steam pipe 30 is excessively increased, steam flows through the bypass pipe 40.
- the steam turbine plant 1 When the steam turbine plant 1 is started, the steam is supplied to the bypass pipe 40, whereby the startability of the steam turbine plant 1 is improved.
- the steam pipe 30 includes a high pressure steam pipe 31 through which steam supplied to the high pressure turbine 11 flows, an intermediate pressure steam pipe 32 through which steam supplied to the intermediate pressure turbine 12 flows, and a low pressure through which steam supplied to the low pressure turbine 13 flows. And a steam pipe 33.
- the high-pressure steam pipe 31 may be referred to as a main steam pipe 31.
- the intermediate pressure steam pipe 32 may be referred to as a high temperature reheat steam pipe 32.
- the high-pressure steam pipe 31 is arranged so as to connect the high-pressure heating unit 21 and the high-pressure turbine 11.
- the end of the high pressure steam pipe 31 is connected to the inlet of the high pressure turbine 11.
- the steam generated by the high pressure heating unit 21 is supplied to the high pressure turbine 11 via the high pressure steam pipe 31.
- the intermediate pressure steam pipe 32 is disposed so as to connect the intermediate pressure heating unit 22 and the intermediate pressure turbine 12.
- the end of the intermediate pressure steam pipe 32 is connected to the inlet of the intermediate pressure turbine 12.
- the steam generated by the reheating unit 24 is supplied to the intermediate pressure turbine 12 via the intermediate pressure steam pipe 32.
- the low pressure steam pipe 33 is arranged so as to connect the low pressure heating unit 23 and the low pressure turbine 13.
- the end of the low pressure steam pipe 33 is connected to the inlet of the low pressure turbine 13.
- the steam generated by the low-pressure heating unit 23 is supplied to the low-pressure turbine 13 via the low-pressure steam pipe 33.
- the low temperature reheat steam pipe 51 is arranged so as to connect the outlet of the high pressure turbine 11 and the reheat unit 24.
- the steam discharged from the outlet of the high-pressure turbine 11 merges with the steam from the intermediate pressure heating unit 22 via the low-temperature reheat steam pipe 51 and then supplied to the reheat unit 24.
- the reheating unit 24 heats the steam discharged from the high pressure turbine 11 and supplied via the low temperature reheat steam pipe 51.
- the bypass pipe 40 includes a high pressure bypass pipe 41 branched from the high pressure steam pipe 31, an intermediate pressure bypass pipe 42 branched from the intermediate pressure steam pipe 32, and a low pressure bypass pipe 43 branched from the low pressure steam pipe 33.
- the high-pressure bypass pipe 41 is arranged so as to connect the high-pressure steam pipe 31 and the low-temperature reheat steam pipe 51 (the outlet of the high-pressure turbine 11).
- the intermediate pressure bypass pipe 42 is arranged so as to connect the intermediate pressure steam pipe 32 and the condenser 2.
- the low pressure bypass pipe 43 is disposed so as to connect the low pressure steam pipe 33 and the condenser 2.
- the piping system 1000 has a plurality of valves.
- the valves are arranged in the steam stop valve 60 arranged in the steam pipe 30, the control valve 70 arranged in the steam pipe 30, the turbine bypass valve 80 arranged in the bypass pipe 40, and the low temperature reheat steam pipe 51. And a check valve 3.
- closing of the flow path of the piping of the piping system 1000 by the operation of the valve is referred to as closing the valve as appropriate, and opening of the flow path of the piping of the piping system 1000 is appropriately performed by the operation of the valve. Open the valve.
- the steam stop valve 60 can shut off the flow of the steam pipe 30 and stop the supply of steam from the steam generating device 20 to the steam turbine 10.
- steam stop valve 60 When the steam stop valve 60 is opened, steam is supplied from the steam generator 20 to the steam turbine 10.
- the steam stop valve 60 is closed, the supply of steam from the steam generator 20 to the steam turbine 10 is stopped.
- the steam stop valve 60 includes a high pressure steam stop valve 61 disposed in the high pressure steam pipe 31, an intermediate pressure steam stop valve 62 disposed in the intermediate pressure steam pipe 32, and a low pressure steam stop valve disposed in the low pressure steam pipe 33. 63.
- the high pressure steam stop valve 61 may be referred to as a main steam stop valve 61.
- the intermediate pressure steam stop valve 62 may be referred to as a reheat steam stop valve 62.
- the control valve 70 can adjust the amount of steam supplied from the steam generator 20 to the steam turbine 10.
- the control valve 70 may be referred to as a governor valve 70.
- the control valve 70 includes a high pressure control valve 71 disposed in the high pressure steam pipe 31, an intermediate pressure control valve 72 disposed in the intermediate pressure steam pipe 32, and a low pressure control valve 73 disposed in the low pressure steam pipe 33. Including.
- the high pressure control valve 71 may be referred to as a main control valve 71.
- the intermediate pressure control valve 72 may be referred to as a reheat control valve 72.
- the turbine bypass valve 80 can open and close the flow path of the bypass pipe 40. When the turbine bypass valve 80 is opened, the steam from the steam generating device 20 can flow through the bypass pipe 40. When the turbine bypass valve 80 is closed, the flow of steam in the bypass pipe 40 is blocked.
- the turbine bypass valve 80 includes a high pressure turbine bypass valve 81 disposed in the high pressure bypass pipe 41, a medium pressure turbine bypass valve 82 disposed in the intermediate pressure bypass pipe 42, and a low pressure turbine bypass valve disposed in the low pressure bypass pipe 43. 83.
- FIG. 2 is a diagram schematically showing the flow of steam during normal operation of the steam turbine plant 1 according to the present embodiment.
- the high pressure steam stop valve 61, the medium pressure steam stop valve 62, and the low pressure steam stop valve 63 are opened.
- the high pressure turbine bypass valve 81, the intermediate pressure turbine bypass valve 82, and the low pressure turbine bypass valve 83 are closed.
- the steam generated by the high pressure heating unit 21 is supplied to the high pressure turbine 11 via the high pressure steam pipe 31.
- the steam in the high pressure steam pipe 31 flows into the inlet of the high pressure turbine 11. Thereby, the high pressure turbine 11 operates.
- the steam that flows out from the outlet of the high-pressure turbine 11 is supplied to the reheating unit 24 through the low-temperature reheat steam pipe 51.
- the steam generated by the intermediate pressure heating unit 22 is supplied to the reheating unit 24.
- the reheating unit 24 heats the steam supplied from the intermediate pressure heating unit 22 and the steam supplied from the high pressure turbine 11 via the low temperature reheat steam pipe 51.
- the steam reheated by the reheating unit 24 is supplied to the intermediate pressure turbine 12 via the intermediate pressure steam pipe 32.
- the steam in the intermediate pressure steam pipe 32 flows into the inlet of the intermediate pressure turbine 12. Thereby, the intermediate pressure turbine 12 operates.
- the steam flowing out from the outlet of the intermediate pressure turbine 12 is supplied to the low pressure turbine 13 through the pipe 52.
- the steam generated by the low-pressure heating unit 23 is supplied to the low-pressure turbine 13 via the low-pressure steam pipe 33.
- the steam in the low pressure steam pipe 33 flows into the inlet of the low pressure turbine 13.
- steam from the low pressure heating unit 23 and steam from the intermediate pressure turbine 12 are supplied to the low pressure turbine 13.
- the low pressure turbine 13 operates.
- Steam flowing out from the outlet of the low-pressure turbine 13 is supplied to the condenser 2.
- the condenser 2 returns the steam supplied from the low-pressure turbine 13 to water.
- the piping system 1000 includes a piping member 100 having one inlet and two outlets.
- a branch portion between the high-pressure steam pipe 31 and the high-pressure bypass pipe 41 includes a pipe member 100.
- a branch portion between the intermediate pressure steam pipe 32 and the intermediate pressure bypass pipe 42 includes a pipe member 100.
- a branch portion between the low-pressure steam pipe 33 and the low-pressure bypass pipe 43 includes a pipe member 100.
- the piping member 100 disposed at the branch portion between the high-pressure steam pipe 31 and the high-pressure bypass pipe 41 will be mainly described.
- the piping member 100 disposed at the branch portion between the intermediate pressure steam pipe 32 and the intermediate pressure bypass piping 42 and the piping member 100 disposed at the branch portion between the low pressure steam pipe 33 and the low pressure bypass piping 43 are the high pressure steam piping 31. It is the structure equivalent to the piping member 100 arrange
- FIG. 3 is a perspective view showing an example of the piping member 100 according to the present embodiment.
- FIG. 4 is a cross-sectional view illustrating an example of the piping member 100 according to the present embodiment.
- the direction parallel to the X-axis in the horizontal plane is the X-axis direction
- the direction parallel to the Y-axis orthogonal to the X-axis in the horizontal plane is the Y-axis direction
- the direction parallel to the Z-axis orthogonal to each of the X-axis and Y-axis is the Z axis direction.
- the Z-axis direction is the vertical direction (up and down direction).
- the XY plane is parallel to the horizontal plane.
- the Z axis is orthogonal to the XY plane.
- the piping member 100 includes a first pipe part 101, a second pipe part 102, and a connection part 104 disposed between the first pipe part 101 and the second pipe part 102. And a third pipe part 103 connected to the connection part 104.
- the 1st pipe part 101 has the 1st channel 101R.
- the second pipe portion 102 has a second flow path 102R.
- the connection unit 104 includes a connection channel 104R that connects the first channel 101R and the second channel 102R.
- the 3rd pipe part 103 has the 3rd channel 103R.
- the third flow path 103R is connected to the connection flow path 104R through the opening 108.
- the first flow path 101R, the second flow path 102R, and the third flow path 103R are connected via the connection flow path 104R.
- the piping member 100 has an inlet 105 through which steam flows, an outlet 106 through which steam flows out, and an outlet 107 through which steam flows out.
- the inlet 105 is provided in the first pipe portion 101.
- the outlet 106 is provided in the second pipe portion 102.
- the outlet 107 is provided in the third pipe portion 103.
- the inlet 105 includes an opening provided at the end of the first tube portion 101.
- the outlet 106 includes an opening provided at the end of the second tube portion 102.
- the outlet 107 includes an opening provided at the end of the third tube portion 103.
- steam is supplied to the first pipe portion 101.
- the steam that has flowed into the inlet 105 of the first pipe part 101 flows through the first flow path 101R of the first pipe part 101, and then through the connection flow path 104R, the second flow path 102R of the second pipe part 102 and It can flow into at least one of the third flow paths 103 ⁇ / b> R of the third pipe portion 103.
- the steam in the second flow path 102R flows out from the outlet 106.
- the steam in the third flow path 103R flows out from the outlet 107.
- the first tube portion 101 is a straight tube.
- the 2nd pipe part 102 is a straight tube shape.
- the third pipe part 103 includes a straight pipe part 103A connected to the connection part 104, a bent part 103K connected to the straight pipe part 103A, and a straight pipe part 103B connected to the bent part 103K.
- the bent portion 103K is disposed between the straight pipe portion 103A and the straight pipe portion 103B.
- the first pipe portion 101 has a first central axis AX1.
- the first pipe portion 101 is disposed around the first central axis AX1.
- the second tube portion 102 has a second central axis AX2.
- the second pipe portion 102 is disposed around the second central axis AX2.
- the third pipe portion 103 (straight pipe portion 103A) has a third central axis AX3.
- the third pipe portion 103 (straight pipe portion 103A) is disposed around the third central axis AX3.
- the connecting portion 104 has a central axis AX4.
- the shape of the first flow path 101R in a plane orthogonal to the first central axis AX1 is a circle.
- the shape of the second flow path 102R in the plane orthogonal to the second central axis AX2 is a circle.
- the shape of the third flow path 103R in the plane orthogonal to the third central axis AX3 is a circle.
- the inner diameter (dimension) of the first flow path 101R, the inner diameter (dimension) of the second flow path 102R, and the inner diameter (dimension) of the third flow path 103R are substantially equal.
- the angle ⁇ ⁇ b> 1 formed by the first central axis AX ⁇ b> 1 of the first pipe portion 101 and the second central axis AX ⁇ b> 2 of the second pipe portion 102 is the first angle of the first pipe portion 101.
- the angle ⁇ 2 is larger than the angle ⁇ 2 formed by the central axis AX1 and the third central axis AX3 of the third pipe portion 103 (straight pipe portion 103A).
- first central axis AX1 and the second central axis AX2 are parallel.
- the first central axis AX1 and the second central axis AX2 coincide (coaxial).
- the first central axis AX1, the second central axis AX2, and the central axis AX4 are parallel.
- the first central axis AX1, the second central axis AX2, and the central axis AX4 coincide (coaxial). That is, the first tube portion 101, the second tube portion 102, and the connection portion 104 form a straight tube.
- the first central axis AX1 and the third central axis AX3 are orthogonal to each other.
- the angle ⁇ 1 is 180 [°].
- the angle ⁇ 2 is 90 [°].
- the first central axis AX1 is parallel to the X axis.
- the second central axis AX2 is parallel to the X axis.
- the central axis AX4 is parallel to the X axis.
- the third central axis AX3 is parallel to the Z axis.
- the plane orthogonal to the first central axis AX1 is the YZ plane.
- a plane orthogonal to the second central axis AX2 is a YZ plane.
- a plane orthogonal to the third central axis AX3 is an XY plane.
- FIG. 5 is a perspective view schematically showing a part of the piping system 1000 according to the present embodiment.
- FIG. 5 is a perspective view of the vicinity of the piping member 100.
- the first pipe portion 101 is connected to the high-pressure heating unit 21 via the supply pipe 53.
- the supply pipe 53 is disposed between the high-pressure heating unit 21 and the first pipe part 101.
- the steam generated by the high-pressure heating unit 21 is supplied to the first pipe unit 101 via the supply pipe 53.
- the second pipe portion 102 is connected to the high pressure turbine bypass valve 81.
- a high pressure turbine bypass valve 81 is disposed in the high pressure bypass pipe 41.
- the second pipe portion 102 is connected to the high pressure bypass pipe 41 via the high pressure turbine bypass valve 81.
- the steam in the second pipe portion 102 is supplied to the high pressure bypass pipe 41 via the high pressure turbine bypass valve 81.
- the steam in the second pipe portion 102 flows into the inlet of the high pressure turbine bypass valve 81.
- the third pipe portion 103 is connected to the high pressure steam stop valve 61.
- a high pressure steam stop valve 61 is disposed in the high pressure steam pipe 31.
- the third pipe portion 103 is connected to the high pressure steam pipe 31 via the high pressure steam stop valve 61.
- the high pressure steam pipe 31 is disposed between the third pipe portion 103 and the high pressure turbine 11.
- the steam in the third pipe portion 103 is supplied to the high pressure steam pipe 31 via the high pressure steam stop valve 61.
- the steam in the third pipe portion 103 flows into the inlet 61 ⁇ / b> A of the high pressure steam stop valve 61.
- the opening 108 is arranged above (+ Z direction) the central axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 into which steam from the third pipe portion 103 flows is disposed above (+ Z direction) the central axis AX4 of the connecting portion 104.
- the inlet 61A is arranged above the opening 108 (+ Z direction).
- the end of the 1st pipe part 101 in which the inlet 105 was provided and the supply piping 53 are connected.
- the end of the second pipe part 102 provided with the outlet 106 and the high-pressure bypass pipe 41 are connected.
- the end of the third pipe part 103 (straight pipe part 103B) provided with the outlet 107 and the high-pressure steam stop valve 61 are connected.
- the supply pipe 53 and the first pipe portion 101 are welded.
- the second pipe portion 102 and the high pressure bypass pipe 41 are welded.
- the third pipe portion 103 and the high pressure steam stop valve 61 are welded.
- the third pipe portion 103 and the high pressure steam stop valve 61 are directly welded.
- a connecting pipe is disposed between the third pipe portion 103 and the high pressure steam stop valve 61. May be.
- the connecting pipe and the third pipe portion 103 may be welded, and the connecting pipe and the high-pressure steam stop valve 61 may be welded.
- the second pipe portion 102 and the high-pressure turbine bypass valve 81 are directly welded.
- a connecting pipe is disposed between the second pipe portion 102 and the high-pressure turbine bypass valve 81. May be.
- the connecting pipe and the second pipe portion 102 may be welded, and the connecting pipe and the high-pressure turbine bypass valve 81 may be welded.
- FIG. 6 is a perspective view schematically showing a part of the piping system 1000 according to the present embodiment.
- the piping system 1000 includes a piping member 200.
- the piping member 200 includes a pipe part 201 having a flow path, a pipe part 202 having a flow path, a pipe part 201 and a pipe part 202, and the pipe part 201 and the pipe part 202.
- a pipe part 203 having a flow path connected to the connection flow path through the opening.
- a straight pipe is formed by the pipe part 201, the pipe part 202, and the connection part 204.
- the piping member 200 has a structure that approximates the piping member 100. A detailed description of the piping member 200 is omitted.
- the tube portion 203 does not have a bent portion.
- the pipe part 203 may have a bent part.
- the pipe part 201 is connected to a low-temperature reheat steam pipe 51 in which the check valve 3 is arranged.
- the pipe part 202 is connected to the low-temperature reheat steam pipe 51 connected to the reheat unit 24.
- the pipe part 203 is connected to the high-pressure bypass pipe 41 in which the high-pressure turbine bypass valve 81 is arranged.
- the steam discharged from the high-pressure turbine 11 is supplied to the pipe part 201.
- the steam of the high pressure bypass pipe 41 is supplied to the pipe part 203.
- the high pressure turbine bypass valve 81 When the high pressure turbine bypass valve 81 is open, the steam from the high pressure heating unit 21 flows into the high pressure bypass pipe 41 via the first pipe portion 101 and the second pipe portion 102 of the pipe member 100.
- the high pressure turbine bypass valve 81 When the high pressure turbine bypass valve 81 is open, the steam from the high pressure heating unit 21 is supplied to the pipe portion 203.
- the high pressure turbine bypass valve 81 is closed, the steam from the high pressure heating unit 21 is not supplied to the pipe portion 203.
- the steam of the pipe part 201 can flow into the pipe part 202.
- the steam of the pipe part 203 can flow into the pipe part 202.
- the steam of the pipe part 202 is supplied to the reheating unit 24 through the low temperature reheat steam pipe 51.
- the reheat unit 24 heats the steam from the low temperature reheat steam pipe 51.
- the supply pipe 53 and the first pipe portion 101 are welded by the first welding process.
- the second pipe portion 102 and the high pressure bypass pipe 41 are welded by the first welding process.
- the third pipe portion 103 and the high pressure steam stop valve 61 are welded by the second welding process.
- the low temperature reheat steam pipe 51 and the pipe part 201 are welded by the first welding process.
- the pipe part 202 and the low-temperature reheat steam pipe 51 are welded by the first welding process.
- the high pressure bypass pipe 41 and the pipe part 203 are welded by the second welding process.
- the welded part generated by the first welding process is appropriately referred to as a first welded part 4, and the welded part generated by the second welding process is appropriately referred to as a second welded part 5.
- the first weld 4 includes a first weld 4A between the supply pipe 53 and the first pipe 101, and a first weld 4B between the second pipe 102 and the high-pressure bypass pipe 41.
- the first welded portion 4 includes a first welded portion 4 ⁇ / b> C between the low temperature reheat steam pipe 51 and the pipe portion 201, and a first weld portion 4 ⁇ / b> D between the pipe portion 202 and the low temperature reheat steam pipe 51.
- the second welded part 5 includes a second welded part 5 ⁇ / b> A between the third pipe part 103 and the high-pressure steam stop valve 61.
- the second welded portion 5 includes a second welded portion 5B of the high pressure bypass pipe 41 and the pipe portion 203 in which the high pressure turbine bypass valve 81 is disposed.
- the first welding process includes groove welding.
- the second welding process includes groove welding.
- the first welding process includes welding in which foreign matter such as welding slag is generated.
- the second welding process includes welding in which foreign matter such as welding slag is generated.
- FIG. 7 is a cross-sectional view schematically showing an example of the first welded portion 4. As illustrated in FIG. 7, foreign substances may be generated by the first welding process and remain inside the pipe (for example, the first flow path 101 ⁇ / b> R of the first pipe portion 101).
- FIG. 8 is a cross-sectional view schematically showing an example of the second welded portion 5.
- the second welding process includes a process in which an operator removes foreign matters such as welding slag from the inside of the pipe after the welding process similar to the first welding process is performed.
- the second welding process requires an operator to access the weld from the inside of the pipe. Therefore, the range to which the second welding process is applied is limited.
- the second welding process is not limited to this mode, and a method that does not generate foreign matter inside the pipe without removing foreign matter from the inside of the pipe may be adopted.
- the connection of the 3rd pipe part 103 and the high pressure steam stop valve 61 is in the inside of piping. If it is a connection method which does not generate a foreign material, it will not be limited to a 2nd welding process, For example, you may employ
- blowing out according to this embodiment will be described. For example, after the completion of the construction for the construction of the steam turbine plant 1, before starting the steam turbine plant 1, blowing out (flushing) for removing foreign matters in the piping of the piping system 1000 is performed.
- Construction for the construction of the steam turbine plant 1 includes a first welding process and a second welding process. As described above, foreign substances may be generated by the first welding process and remain inside the pipe. Moreover, the 1st welding part 4 may be grind
- Blowing out is a process to remove foreign matter inside the piping.
- the blowing out may be performed after the steam turbine plant 1 is stopped for a long time and before the steam turbine plant 1 is restarted.
- Blowing out includes a process of supplying steam to the piping of the piping system 1000. Foreign matter in the pipe is blown away by the steam supplied to the pipe. Thereby, the foreign substance of piping is removed. The steam supplied to the piping in the blowing out is free blown (atmospheric release).
- blowing out is performed by supplying steam from the high-pressure heating unit 21 to the piping system 1000.
- FIG. 9 is a diagram schematically illustrating an example of the steam turbine plant 1 when the blowing out according to the present embodiment is performed.
- blowing out is performed in a state where the high-pressure turbine bypass valve 81 and the low-temperature reheat steam pipe (reheat pipe) 51 are connected via a temporary pipe 54.
- one end of the temporary pipe 54 is connected to the high-pressure turbine bypass valve 81, and the other end of the temporary pipe 54 is connected to the check valve 3.
- the check valve 3 is disposed in the low temperature reheat steam pipe 51.
- the temporary pipe 54 is connected to the low temperature reheat steam pipe 51 by connecting the other end of the temporary pipe 54 to the check valve 3.
- FIG. 10 is a perspective view schematically showing a part of the piping system 1000 when the blowing-out according to the present embodiment is performed.
- the high pressure turbine bypass valve 81 high pressure bypass pipe 41
- the check valve 3 low temperature reheat steam pipe 51
- FIG. 11 is a cross-sectional view schematically showing an example of the high-pressure turbine bypass valve 81 according to the present embodiment.
- the high-pressure turbine bypass valve 81 includes a housing 81A, a valve body 81B at least a part of which is disposed in the internal space of the housing 81A, and a lid member 81C that closes the opening of the housing 81A.
- the lid member 81C is fixed to the housing 81A by a bolt member.
- the flow path of the high pressure bypass pipe 41 is connected to the internal space of the housing 81A.
- the vapor sent from the high-pressure heating unit 21 and having passed through the first pipe portion 101 and the second pipe portion 102 of the piping member 100 flows into the internal space of the housing 81A.
- the valve body 81 ⁇ / b> B can open and close the flow path of the high-pressure bypass pipe 41 that leads to the low-temperature reheat steam pipe 51.
- the flow path is closed by the valve body 81B, the steam from the high pressure heating unit 21 is not supplied to the low temperature reheat steam pipe 51.
- the flow path is opened by the valve body 81B, the steam from the high-pressure heating unit 21 is supplied to the low-temperature reheat steam pipe 51.
- FIG. 12 is a cross-sectional view showing an example of a state in which the high-pressure turbine bypass valve 81 and the temporary pipe 54 according to the present embodiment are connected.
- the high-pressure turbine bypass valve 81 and the temporary pipe 54 are connected.
- the temporary pipe 54 is connected to the high pressure turbine bypass valve 81
- the high pressure turbine bypass valve 81 is disassembled. That is, the valve body 81B and the lid member 81C are removed from the housing 81A. With the valve body 81B and the lid member 81C removed from the housing 81A, the housing 81A and the second pipe 102 (high-pressure bypass pipe 41) are connected, and the housing 81A and the temporary pipe 54 are connected.
- the temporary piping 54 is fixed to the housing 81A by a bolt member.
- FIG. 13 is a cross-sectional view showing an example of blowing out according to the present embodiment.
- steam is supplied from the high-pressure heating unit 21 during blowing out.
- the steam sent from the high-pressure heating unit 21 passes through the flow path of the supply pipe 53 and is then supplied to the first pipe portion 101.
- the supply pipe 53 and the first pipe portion 101 are welded by the first welding process. Therefore, there is a high possibility that foreign matter exists in the flow path of the supply pipe 53 or the first flow path 101R of the first pipe portion 101. Due to the steam supplied from the high-pressure heating unit 21, foreign matter in the flow path of the supply pipe 53 is discharged from the flow path of the supply pipe 53. Due to the steam supplied from the high-pressure heating unit 21, the foreign matter in the first flow path 101R of the first pipe portion 101 is discharged from the first flow path 101R.
- blowing out is performed in a state where the high-pressure steam stop valve 61 connected to the third pipe portion 103 is closed.
- the steam sent from the high pressure heating unit 21 is suppressed from flowing into the high pressure steam pipe 31.
- the foreign matter in the first flow path 101 ⁇ / b> R is suppressed from moving to the high-pressure steam pipe 31 and moving to the high-pressure turbine 11 through the high-pressure steam pipe 31.
- the angle ⁇ 1 formed by the first center axis AX1 and the second center axis AX2 is larger than the angle ⁇ 2 formed by the first center axis AX1 and the third center axis AX3. .
- the foreign matter moving together with the steam flows into the second pipe portion 102 exclusively due to its inertia.
- the amount of foreign matter moving from the first flow path 101R to the third flow path 103R is smaller than the amount of foreign matter moving from the first flow path 101R to the second flow path 102R. That is, the movement of foreign matter from the first flow path 101R to the third flow path 103R (inflow) is suppressed.
- the angle ⁇ 1 is 180 [°]
- the first tube portion 101, the connection portion 104, and the second tube portion 102 form a straight tube.
- the angle ⁇ 2 is 90 [°].
- the steam supplied from the first flow path 101R to the second flow path 102R discharges foreign matter in the second flow path 102R from the second flow path 102R.
- the second pipe portion 102 and the high-pressure bypass pipe 41 are welded by the first welding process. Therefore, there is a high possibility that foreign matter exists in the second flow path 102R of the second pipe portion 102 or the flow path of the high-pressure bypass pipe 41. Due to the steam supplied from the high-pressure heating unit 21 via the first flow path 101R, the foreign matter in the second flow path 102R of the second pipe portion 102 is discharged from the second flow path 102R. Further, the foreign matter in the flow path of the high pressure bypass pipe 41 is discharged from the flow path of the high pressure bypass pipe 41 by the steam supplied from the high pressure heating unit 21 through the first flow path 101R of the first pipe portion 101.
- FIG. 14 is a diagram for explaining an example of blowing out according to the present embodiment.
- the steam sent from the high-pressure heating unit 21 is supplied to the first pipe portion 101 of the piping member 100 via the supply piping 53. Since the high-pressure steam stop valve 61 connected to the third pipe portion 103 of the piping member 100 is closed, the steam supplied to the first pipe portion 101 is exclusively discharged from the second pipe portion 102. The steam discharged from the second pipe portion 102 flows into the internal space of the housing 81 ⁇ / b> A of the high pressure turbine bypass valve 81.
- the housing 81A of the high-pressure turbine bypass valve 81 and the temporary piping 54 are connected. Further, the flow path of the high-pressure bypass pipe 41 that leads to the low-temperature reheat steam pipe 51 is closed by a closing member 81D. Thereby, the steam that has flowed into the internal space of the high-pressure turbine bypass valve 81 from the second pipe portion 102 flows into the flow path of the temporary pipe 54.
- the other end of the temporary pipe 54 is connected to the check valve 3 (low temperature reheat steam pipe 51).
- the steam in the temporary pipe 54 is supplied to the flow path of the low-temperature reheat steam pipe 51 through the check valve 3.
- the steam from the temporary pipe 54 and the check valve 3 is supplied to the pipe part 201 of the pipe member 200.
- the steam supplied to the pipe part 201 flows through the pipe part 201 and then is supplied to the low-temperature reheat steam pipe 51.
- the steam in the low temperature reheat steam pipe 51 is supplied to the reheat unit 24 and the intermediate pressure heating unit 22.
- the steam supplied to the reheating unit 24 is supplied to the intermediate pressure steam pipe 32.
- the steam in the intermediate pressure steam pipe 32 is supplied to the intermediate pressure turbine bypass valve 82 via the intermediate pressure bypass pipe 42.
- the piping member 100 is disposed at the branch portion between the intermediate pressure steam pipe 32 and the intermediate pressure bypass pipe 42.
- the 1st pipe part 101 of the piping member 100 is connected to the intermediate pressure steam piping 32 by the 1st welding process.
- the second pipe portion 102 of the piping member 100 is connected to the intermediate pressure turbine bypass valve 82 (intermediate pressure bypass piping 42) by the first welding process.
- the third pipe portion 103 of the piping member 100 is connected to the intermediate pressure steam stop valve 62 by the second welding process.
- blowing out is performed in a state where the intermediate pressure steam stop valve 62 connected to the third pipe portion 103 is closed.
- the steam from the reheating unit 24 is suppressed from flowing into the intermediate pressure steam pipe 32 between the intermediate pressure steam stop valve 62 and the intermediate pressure turbine 12.
- the foreign matter in the first flow path 101 ⁇ / b> R is suppressed from moving to the intermediate pressure turbine 12 through the intermediate pressure steam pipe 32.
- the angle ⁇ 1 formed by the first center axis AX1 and the second center axis AX2 is larger than the angle ⁇ 2 formed by the first center axis AX1 and the third center axis AX3. .
- the foreign matter moving together with the steam flows into the second pipe portion 102 exclusively due to its inertia.
- the amount of foreign matter moving from the first flow path 101R to the third flow path 103R is smaller than the amount of foreign matter moving from the first flow path 101R to the second flow path 102R. That is, the movement of foreign matter from the first flow path 101R to the third flow path 103R (inflow) is suppressed.
- the steam is free blown (released to the atmosphere) via the intermediate pressure turbine bypass valve 82.
- a discharge pipe is connected to the intermediate pressure turbine bypass valve 82.
- a blowing-out determination target and a silencer are arranged in the discharge pipe.
- the steam supplied to the intermediate pressure turbine bypass valve 82 is free blown through the discharge pipe.
- the steam sent from the high-pressure heating unit 21 is the first pipe part 101, the second pipe part 102, the temporary pipe 54, the pipe part 201 of the pipe member 200, and the pipe part 202.
- the low-temperature reheat steam pipe 51 and the intermediate pressure steam pipe 32 pass through. Thereby, the foreign material of the 1st pipe part 101, the 2nd pipe part 102, the pipe part 202, the pipe part 203, the low temperature reheat steam pipe 51, and the intermediate pressure steam pipe 32 is removed.
- the high pressure steam stop valve 61 in blowing out, the high pressure steam stop valve 61 is closed, and the inflow of steam to the third pipe portion 103 of the piping member 100 and the high pressure steam pipe 31 is suppressed. Furthermore, the 3rd pipe part 103 and the high pressure steam stop valve 61 are welded by the 2nd welding process. Therefore, the possibility that foreign matter exists in the third flow path 103R is low.
- the pipe member 100 is sufficiently cleaned, it is connected (welded) to the supply pipe 53, the high-pressure turbine bypass valve 81 (the high-pressure bypass pipe 41), and the high-pressure steam stop valve 61.
- the inner surface of the flow path of the piping member 100 (the inner surface of the first tube portion 101, the inner surface of the second tube portion 102, the inner surface of the third tube portion 103, and the connection)
- the cleaned piping member 100 is delivered to the steam turbine plant 1.
- the first flow path 101R of the first pipe part 101 and the second There is a high possibility that foreign matter remains in the second flow path 102R of the tube portion 102.
- the foreign matter is removed by blowing out according to the present embodiment.
- the possibility that foreign matter remains in the third flow path 103R of the third pipe portion 103 welded by the second welding process is low. Therefore, the 3rd pipe part 103 is contaminated by suppressing the vapor
- the angle ⁇ 1 is larger than the angle ⁇ 2, it is possible to prevent foreign matter from the first flow path 101R of the first pipe portion 101 from flowing into the third flow path 103R of the third pipe portion 103. Is done.
- the steam that has passed through the first flow path 101R is suppressed from flowing into the third flow path 103R, not only the contamination of the third pipe portion 103 but also the high-pressure steam stop valve 61 is suppressed.
- the steam (foreign matter) in the first flow path 101R is separated from the high-pressure steam stop valve 61. Inflow into the high-pressure steam pipe 31 between the high-pressure turbine 11 is suppressed.
- the piping member 200 is delivered in a sufficiently cleaned state. After the pipe member 200 is sufficiently cleaned, it is connected (welded) to the low temperature reheat steam pipe 51 and the high pressure bypass pipe 41.
- the pipe part 201 and the low-temperature reheat steam pipe 51 and the first welding process between the pipe part 202 and the low-temperature reheat steam pipe 51 By the first welding process between the pipe part 201 and the low-temperature reheat steam pipe 51 and the first welding process between the pipe part 202 and the low-temperature reheat steam pipe 51, the flow path of the pipe part 201 and the flow path of the pipe part 202.
- the foreign matter is removed by blowing out according to the present embodiment.
- the possibility that foreign matter remains in the flow path of the pipe part 203 to be welded by the second welding process is low.
- the steam supplied to the flow path of the pipe part 201 via the temporary pipe 54 and passing through the flow path of the pipe part 201 is prevented from flowing into the flow path of the pipe part 203, thereby the pipe part 203. Is prevented from being contaminated.
- the piping member 200 since the piping member 200 has a structure similar to the piping member 100, the steam from the temporary piping 54 is suppressed from flowing into the flow path of the pipe portion 203.
- the piping member 100 is also arranged at a branch portion between the intermediate pressure steam pipe 32 and the intermediate pressure bypass pipe 42. With the intermediate pressure steam stop valve 62 closed, steam is sent out from the reheating unit 24 and blowing out is performed. Thereby, it is suppressed that a foreign material moves to the intermediate pressure turbine 12 side.
- the piping member 100 is also arranged at a branch portion between the low pressure steam pipe 33 and the low pressure bypass pipe 43.
- the 1st pipe part 101 of the piping member 100 is connected with the low pressure steam piping 33 by a 1st welding process.
- the 2nd pipe part 102 of piping member 100 is connected with low pressure turbine bypass valve 83 (low pressure bypass piping 43) by the 1st welding processing.
- the third pipe portion 103 of the piping member 100 is connected to the low pressure steam stop valve 63 by the second welding process. Blowing out may be performed by sending steam from the low pressure heating unit 23 in a state where the low pressure steam stop valve 63 connected to the third pipe portion 103 is closed. Thereby, it is suppressed that a foreign material moves to the low-pressure turbine 13 side.
- FIG. 15 is a flowchart illustrating an example of a cleaning method for the piping system 1000 according to the present embodiment.
- a piping member 100 and a piping member 200 are delivered to the steam turbine plant 1 from a piping member manufacturer.
- the piping member 100 including the first pipe part 101, the second pipe part 102, the third pipe part 103, and the connection part 104 has already been cleaned before delivery.
- the piping member 200 including the pipe part 201, the pipe part 202, the pipe part 203, and the connection part 204 has already been cleaned before delivery.
- the piping member 100, the high-pressure heating unit 21 (supply piping 53), the high-pressure turbine bypass valve 81 (high-pressure bypass piping 41), and the high-pressure steam stop valve 61 are joined by welding (step SP1).
- the cleaned first pipe portion 101 and the supply pipe 53 connected to the high-pressure heating unit 21 of the steam generating device 20 are connected by the first welding process.
- the cleaned second pipe portion 102 and the high-pressure bypass pipe 41 are connected by the first welding process.
- the cleaned third pipe portion 103 and the high pressure steam stop valve 61 disposed in the high pressure steam pipe 31 connected to the inlet of the high pressure turbine 11 are connected by the second welding process.
- the operation of connecting the second pipe portion 102 and the high pressure turbine bypass valve 81 is performed in a state where the high pressure turbine bypass valve 81 is disassembled. That is, with the high-pressure turbine bypass valve 81 disassembled, an operation of connecting the second pipe portion 102 and the high-pressure bypass pipe 41 by the first welding process is performed.
- the state where the high-pressure turbine bypass valve 81 is disassembled refers to a state where the valve body 81B and the lid member 81C are removed from the housing 81A.
- the high pressure steam stop valve 61 is assembled, and the high pressure steam stop valve 61 is arranged in the high pressure steam pipe 31 (step SP2).
- a test of the high-pressure steam stop valve 61 is performed (step SP3).
- the test of the high pressure steam stop valve 61 includes a so-called interlock test.
- the interlock test is a test for confirming whether or not the high-pressure steam stop valve 61 can be normally closed based on the trip signal.
- step SP4 After the interlock test is completed and it is confirmed that the high pressure steam stop valve 61 is normal, the high pressure steam stop valve 61 is closed (step SP4).
- the high pressure turbine bypass valve 81 disposed in the high pressure bypass pipe 41 and the outlet of the high pressure turbine 11 are connected.
- the operation of connecting the low-temperature reheat steam pipe 51 to be performed via the temporary pipe 54 is performed (step SP5).
- the operation of connecting the high-pressure turbine bypass valve 81 and the low-temperature reheat steam pipe 51 via the temporary pipe 54 is performed in a state where the high-pressure turbine bypass valve 81 is disassembled as described with reference to FIG.
- the operation includes connecting the turbine bypass valve 81 and the temporary pipe 54.
- step SP6 steam is supplied from the high-pressure heating unit 21 to the piping system 1000.
- the steam supplied from the high-pressure heating unit 21 includes the first pipe part 101, the second pipe part 102, the temporary pipe 54, the pipe part 201, the pipe part 202, the low-temperature reheat steam pipe 51 of the pipe member 100, And the intermediate pressure steam pipe 32.
- the 1st pipe part 101 of the piping member 100, the 2nd pipe part 102, the pipe part 201 of the piping member 200, the pipe part 202, the low temperature reheat steam pipe 51, and the intermediate pressure steam pipe 32 are cleaned.
- step SP7 the temporary pipe 54 is removed from the high pressure turbine bypass valve 81 (step SP7).
- a valve body 81B and a lid member 81C are attached to the housing 81A. Thereby, the high pressure turbine bypass valve 81 is assembled (step SP8).
- the interlock test of the high-pressure turbine bypass valve 81 is not necessary.
- the high pressure bypass pipe 41 in which the high pressure turbine bypass valve 81 is disposed is not connected to the inlet of the high pressure turbine 11. Based on the trip signal, the high pressure turbine bypass valve 81 need not necessarily be closed. Therefore, it is not necessary to perform the interlock test of the high pressure turbine bypass valve 81.
- the angle ⁇ 1 formed by the first central axis AX1 of the first pipe portion 101 and the second central axis AX2 of the second pipe portion 102 is the first angle of the first pipe portion 101. Since the angle ⁇ 2 formed by the one central axis AX1 and the third central axis AX3 of the third pipe portion 103 is larger, the steam supplied to the first pipe portion 101 flows into the third pipe portion 103 during blowing out. This can be suppressed. According to the present embodiment, since the angle ⁇ 1 is larger than the angle ⁇ 2, the flow rate (flow velocity, pressure) of the steam flowing from the first tube portion 101 into the third tube portion 103 is changed from the first tube portion 101 to the second.
- Valve 63 and steam pipe 30 (high-pressure steam pipe 31, medium-pressure steam pipe 32, low-pressure steam pipe 33) and at least bypass pipe 40 (high-pressure bypass pipe 41, medium-pressure bypass pipe 42, low-pressure bypass pipe 43) Contamination of the downstream portion of the branch portion is suppressed. Therefore, blowing out of the steam pipe 30 can be omitted. Therefore, it is possible to suppress an increase in time required for blowing out.
- the supply of steam from the steam generator 20 (the high pressure heating unit 21, the reheating unit 24, and the low pressure heating unit 23) is performed by the steam stop valve 60 (the high pressure steam stop valve 61, the intermediate pressure steam).
- the stop valve 62 and the low pressure steam stop valve 63) are closed. Therefore, at least the bypass pipe 40 (the high pressure bypass pipe 41, the intermediate pressure bypass pipe 42, the low pressure) among the steam pipes 30 (the high pressure steam pipe 31, the intermediate pressure steam pipe 32, and the low pressure steam pipe 33) in which the steam stop valve 60 is disposed.
- the foreign matter moves to a portion downstream from the branching portion with the bypass pipe 43), and the foreign matter moves to the steam turbine 10 (the high pressure turbine 11, the intermediate pressure turbine 12, and the low pressure turbine 13) via the steam pipe 30. Is suppressed. Thereby, contamination of the steam pipe 30 is suppressed, and blowing out of the steam pipe 30 can be omitted. Therefore, prolonged time required for blowing out is suppressed.
- the 1st pipe part 101, the 2nd pipe part 102, the pipe part 201, the pipe part 202, the low temperature reheat steam pipe 51, and the intermediate pressure steam pipe 32 are blown out once. Can be cleaned.
- the first welding process and the second welding process are properly used. Blowing out is performed on the piping on which the first welding process has been performed in order to shorten the welding work period. Optimization of the shape of the piping member 100, optimization of the arrangement of the valves, and selection of the pipe on which the first welding process is performed are performed so that the piping system 1000 can be cleaned in a wide range by one blowing out.
- the second welding process is performed for the pipes that are not blown out.
- the shape of the piping member 100 is optimized, the valve arrangement is optimized, and the first welding process is performed in consideration of the shortening of the work period including the reduction of the number of blowouts.
- the piping to be selected and the piping to be subjected to the second welding process are selected.
- the first central axis AX1 and the second central axis AX2 are parallel. Therefore, the steam supplied to the first pipe part 101 is smoothly supplied to the second pipe part 102. Therefore, the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is sufficiently suppressed.
- the first central axis AX1 and the second central axis AX2 coincide.
- the first central axis AX1 and the third central axis AX3 are orthogonal to each other. Thereby, the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is sufficiently suppressed.
- the opening 108 is disposed above the central axis AX4 of the connecting portion 104.
- the inlet of the steam stop valve 60 into which the steam from the third pipe portion 103 flows (in this example, the inlet 61A of the high pressure steam stop valve 61) is located above the central axis AX4 of the connecting portion 104. Be placed. As a result, even if at least a part of the foreign matter in the first pipe portion 101 moves to the vicinity of the inlet 61A of the high-pressure steam stop valve 61 via the third pipe portion 103, the foreign matter is It falls from the inlet 61A of the stop valve 61. Therefore, contamination of the high pressure steam stop valve 61 is suppressed. The same applies to the intermediate pressure steam stop valve 62 and the low pressure steam stop valve 63.
- the interlock test of the steam stop valve 60 (in this example, the high pressure steam stop valve 61) is performed, and the high pressure steam stop valve 61 is closed after the completion of the interlock test. Blowing out is performed with the high-pressure steam stop valve 61 closed. Thereby, it is suppressed that a foreign material moves to the high pressure turbine 11 in blowing out. Moreover, since it is confirmed by the interlock test that it is normal, the high-pressure steam stop valve 61 is closed, so that foreign matter is prevented from moving to the high-pressure turbine 11 in advance. The same applies to the intermediate pressure steam stop valve 62, the low pressure steam stop valve 63, the intermediate pressure turbine 12, and the low pressure turbine 13.
- the steam pipe 30 (the high-pressure steam pipe 31 in this example) and the steam stop valve 60 (the high-pressure steam stop valve 61 in this example) are not blown out.
- No need to connect piping In other words, it is not necessary to disassemble the high-pressure steam stop valve 61 for blowing out. Therefore, the number of times of performing the interlock test can be suppressed to a necessary minimum. Therefore, prolonged time required for blowing out is suppressed.
- connection between the second pipe portion 102 and the high pressure bypass pipe 41 and the connection between the high pressure turbine bypass valve 81 and the temporary pipe 54 are performed in a state where the high pressure turbine bypass valve 81 is disassembled. Is done. After blowing out, the high pressure turbine bypass valve 81 is assembled. Thereby, the connection between the high-pressure turbine bypass valve 81 and the temporary pipe 54 is smoothly performed. Further, since the connection between the second pipe portion 102 and the high pressure bypass pipe 41 is performed in a state where the high pressure turbine bypass valve 81 is disassembled, the high pressure bypass pipe 41 is connected via the disassembled high pressure turbine bypass valve 81. And the 2nd pipe part 102 can be visually observed or inspected.
- the valve disassembled for the connection of the temporary pipe 54 is the turbine bypass valve 80 (high-pressure turbine bypass valve 81).
- the high pressure bypass pipe 41 in which the high pressure turbine bypass valve 81 is disposed is not connected to the high pressure turbine 11. That is, the steam passing through the high pressure turbine bypass valve 81 is not supplied to the high pressure turbine 11.
- the high-pressure turbine bypass valve 81 it is possible to omit the interlock test. Therefore, after assembling the high-pressure turbine bypass valve 81, the steam turbine plant 1 can be started up early. Thereby, prolonged time required for blowing out is suppressed.
- the high-pressure turbine bypass valve 81 and the low-temperature reheat steam pipe 51 are connected using the temporary pipe 54.
- the temporary pipe 54 is replaceable, and the temporary piping 54 having various dimensions (inner diameter) can be selected. For example, when the dimension (inner diameter) of the high-pressure bypass pipe 41 between the high-pressure turbine bypass valve 81 and the low-temperature reheat steam pipe 51 is small, the high-pressure heating unit 21 passes through the high-pressure bypass pipe 41 without using the temporary pipe 54.
- the flow velocity or pressure of the steam flowing through the low temperature reheat steam pipe 51 may be insufficient to remove foreign matter. That is, when the high-pressure bypass pipe 41 having a small size is used without using the temporary pipe 54, there is a possibility that sufficient cleaning power cannot be obtained in the low-temperature reheat steam pipe 51. According to the present embodiment, a sufficient cleaning force can be obtained by using the temporary piping 54. In addition, when the dimension of the high pressure bypass pipe 41 is large and sufficient cleaning power can be obtained in the low temperature reheat steam pipe 51, the temporary pipe 54 may not be used.
- the shape of the first flow path 101R in the plane orthogonal to the first central axis AX1 is circular
- the shape of the second flow path 102R in the plane orthogonal to the second central axis AX2 is It is circular and the shape of the third flow path 103R in a plane orthogonal to the third central axis AX3 is circular
- the shape of the first flow path 101R in the plane orthogonal to the first central axis AX1 may be elliptical or polygonal.
- the shape of the second flow path 102R in the plane orthogonal to the second central axis AX2 may be elliptical or polygonal.
- the shape of the third flow path 103R in the plane orthogonal to the third central axis AX3 may be an ellipse or a polygon.
- the shape of the first channel 101R, the shape of the second channel 102R, and the shape of the third channel 103R may be the same. At least one of the shape of the first channel 101R, the shape of the second channel 102R, and the shape of the third channel 103R may be different. The same applies to the following embodiments.
- the dimension (inner diameter) of the first channel 101R, the dimension (inner diameter) of the second channel 102R, and the dimension (inner diameter) of the third channel 103R are substantially equal. It was. At least one of the dimension of the first channel 101R, the dimension of the second channel 102R, and the dimension of the third channel 103R may be different. The same applies to the following embodiments.
- positioned at the branch part of the high pressure steam piping 31 and the high pressure bypass piping 41 was mainly demonstrated.
- the pipe member 100 disposed at the branch portion between the intermediate pressure steam pipe 32 and the intermediate pressure bypass pipe 42 and the pipe member 100 disposed at the branch portion between the low pressure steam pipe 33 and the low pressure bypass pipe 43 are also included in the high pressure steam pipe 31.
- the same operation and effect as the piping member 100 arranged at the branch portion between the high pressure bypass pipe 41 and the high pressure bypass pipe 41 can be obtained. The same applies to the following embodiments.
- FIG. 16 is a perspective view showing an example of the piping member 100B according to the present embodiment.
- the piping member 100 ⁇ / b> B includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed above (+ Z direction) the central axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 is disposed above (+ Z direction) the center axis AX4 of the connecting portion 104.
- the third pipe portion 103 does not have a bent portion.
- the third pipe portion 103 is a straight pipe.
- the 3rd pipe part 103 (3rd center axis AX3 of the 3rd pipe part 103) inclines with respect to a horizontal surface (XY plane).
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 17 is a perspective view showing an example of a piping member 100C according to the present embodiment.
- the piping member 100 ⁇ / b> C includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed above (+ Z direction) the central axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 is disposed above (+ Z direction) the center axis AX4 of the connecting portion 104.
- the third pipe portion 103 does not have a bent portion.
- the third pipe portion 103 is a straight pipe.
- the third tube portion 103 (the third central axis AX3 of the third tube portion 103) is orthogonal to the horizontal plane (XY plane).
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 18 is a perspective view showing an example of a piping member 100D according to the present embodiment.
- the piping member 100 ⁇ / b> D includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed at the same height as the central axis AX4 of the connecting portion 104. Height refers to the position in the Z-axis direction.
- the inlet 61 ⁇ / b> A of the high-pressure steam stop valve 61 is disposed above the central axis AX ⁇ b> 4 of the connection portion 104.
- the 3rd pipe part 103 has the bending part 103K.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 19 is a perspective view showing an example of the piping member 100E according to the present embodiment.
- the piping member 100 ⁇ / b> E includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed at the same height as the central axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 is disposed at the same height as the central axis AX4 of the connecting portion 104.
- the 3rd pipe part 103 does not have a bending part.
- the third pipe portion 103 is a straight pipe.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 20 is a perspective view showing an example of the piping member 100F according to the present embodiment.
- the piping member 100 ⁇ / b> F includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed above (+ Z direction) the center axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 is disposed below ( ⁇ Z direction) from the central axis AX4 of the connecting portion 104.
- the third pipe portion 103 has a bent portion 103Ka and a bent portion 103Kb.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 21 is a perspective view showing an example of the piping member 100G according to the present embodiment.
- the piping member 100 ⁇ / b> G includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed below ( ⁇ Z direction) the central axis AX4 of the connecting portion 104.
- the inlet 61A of the high-pressure steam stop valve 61 is disposed above (+ Z direction) the center axis AX4 of the connecting portion 104.
- the third pipe portion 103 has a bent portion 103Ka and a bent portion 103Kb.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 22 is a perspective view showing an example of the piping member 100H according to the present embodiment.
- the piping member 100 ⁇ / b> H includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the opening 108 is disposed at the same height as the central axis AX4 of the connecting portion 104.
- the inlet 61 ⁇ / b> A of the high-pressure steam stop valve 61 is disposed below the central axis AX ⁇ b> 4 of the connection portion 104.
- the 3rd pipe part 103 has the bending part 103K.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 23 is a perspective view showing an example of the piping member 100I according to the present embodiment.
- the piping member 100 ⁇ / b> I includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the first tube portion 101 is disposed above (+ Z direction) the second tube portion 102.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 24 is a perspective view showing an example of the piping member 100J according to the present embodiment.
- the piping member 100 ⁇ / b> J includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the second tube portion 102 is disposed above (+ Z direction) the first tube portion 101.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- the high-pressure turbine bypass valve 81 is closed. For this reason, the vapor in the second pipe portion 102 is stagnant and tends to be liquefied. In the present embodiment, even if the vapor is liquefied in the second pipe portion 102, the liquid falls due to the action of gravity. Therefore, it is possible to prevent liquid from accumulating in the second pipe portion 102. Further, the liquid is suppressed from moving to the high pressure turbine bypass valve 81 or the high pressure steam stop valve 61.
- FIG. 25 is a cross-sectional view showing an example of the piping member 100K according to the present embodiment.
- the piping member 100 ⁇ / b> K includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the angle ⁇ 1 formed by the first central axis AX1 of the first pipe part 101 and the second central axis AX2 of the second pipe part 102 is the third central axis AX1 of the first pipe part 101 and the third central part AX of the third pipe part 103. It is larger than the angle ⁇ 2 formed by the central axis AX3.
- first central axis AX1 and the second central axis AX2 are non-parallel.
- the first central axis AX1 and the third central axis AX3 are not orthogonal.
- the angle ⁇ 1 is larger than 180 [°].
- the angle ⁇ 1 is, for example, larger than 180 [°] and smaller than 210 [°].
- the angle ⁇ 2 is smaller than 90 [°].
- the angle ⁇ 2 is, for example, smaller than 90 [°] and larger than 75 [°].
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 26 is a cross-sectional view showing an example of a piping member 100L according to the present embodiment.
- the piping member 100 ⁇ / b> L includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the angle ⁇ 1 formed by the first central axis AX1 of the first pipe part 101 and the second central axis AX2 of the second pipe part 102 is the third central axis AX1 of the first pipe part 101 and the third central part AX of the third pipe part 103. It is larger than the angle ⁇ 2 formed by the central axis AX3.
- first central axis AX1 and the second central axis AX2 are non-parallel.
- the first central axis AX1 and the third central axis AX3 are not orthogonal.
- the angle ⁇ 1 is smaller than 180 [°].
- the angle ⁇ 1 is, for example, smaller than 180 [°] and larger than 150 [°].
- the angle ⁇ 2 is larger than 90 [°].
- the angle ⁇ 2 is, for example, larger than 90 [°] and smaller than 105 [°].
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
- FIG. 27 is a cross-sectional view showing an example of the piping member 100M according to the present embodiment.
- the piping member 100M includes a first pipe part 101, a second pipe part 102, a third pipe part 103, and a connection part 104.
- the angle ⁇ 1 formed by the first central axis AX1 of the first pipe part 101 and the second central axis AX2 of the second pipe part 102 is the third central axis AX1 of the first pipe part 101 and the third central part AX of the third pipe part 103. It is larger than the angle ⁇ 2 formed by the central axis AX3.
- first central axis AX1 and the second central axis AX2 are parallel.
- the first central axis AX1 and the third central axis AX3 are orthogonal to each other.
- first central axis AX1 and the second central axis AX2 do not match (non-coaxial).
- the second central axis AX2 is shifted with respect to the first central axis AX1.
- the movement of the foreign matter in the first tube portion 101 to the third tube portion 103 is suppressed.
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Abstract
Description
第1実施形態について説明する。図1は、本実施形態に係る蒸気タービンプラント1の一例を模式的に示す図である。図1に示すように、蒸気タービンプラント1は、蒸気タービン10と、蒸気を生成する蒸気生成装置20と、蒸気が流れる配管を有する配管システム1000と、を備えている。
第2実施形態について説明する。以下の説明において、上述の実施形態と同一又は同等の構成部分については同一の符号を付し、その説明を簡略又は省略する。
図17は、本実施形態に係る配管部材100Cの一例を示す斜視図である。配管部材100Cは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。開口108は、接続部104の中心軸AX4よりも上方(+Z方向)に配置される。高圧蒸気止弁61の入口61Aは、接続部104の中心軸AX4よりも上方(+Z方向)に配置される。
図18は、本実施形態に係る配管部材100Dの一例を示す斜視図である。配管部材100Dは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図19は、本実施形態に係る配管部材100Eの一例を示す斜視図である。配管部材100Eは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図20は、本実施形態に係る配管部材100Fの一例を示す斜視図である。配管部材100Fは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図21は、本実施形態に係る配管部材100Gの一例を示す斜視図である。配管部材100Gは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図22は、本実施形態に係る配管部材100Hの一例を示す斜視図である。配管部材100Hは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図23は、本実施形態に係る配管部材100Iの一例を示す斜視図である。配管部材100Iは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図24は、本実施形態に係る配管部材100Jの一例を示す斜視図である。配管部材100Jは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図25は、本実施形態に係る配管部材100Kの一例を示す断面図である。配管部材100Kは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図26は、本実施形態に係る配管部材100Lの一例を示す断面図である。配管部材100Lは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
図27は、本実施形態に係る配管部材100Mの一例を示す断面図である。配管部材100Mは、第1管部101と、第2管部102と、第3管部103と、接続部104と、を有する。
2 復水器
3 逆止弁
4 第1溶接部
4A 第1溶接部
4B 第1溶接部
4C 第1溶接部
4D 第1溶接部
5 第2溶接部
5A 第2溶接部
5B 第2溶接部
10 蒸気タービン
11 高圧タービン
12 中圧タービン
13 低圧タービン
20 蒸気生成装置
21 高圧加熱ユニット
22 中圧加熱ユニット
23 低圧加熱ユニット
24 再熱ユニット
30 蒸気配管
31 高圧蒸気配管(主蒸気配管)
32 中圧蒸気配管(高温再熱蒸気配管)
33 低圧蒸気配管
40 バイパス配管
41 高圧バイパス配管
42 中圧バイパス配管
43 低圧バイパス配管
51 低温再熱蒸気配管
52 配管
53 供給配管
54 仮設配管
60 蒸気止弁
61 高圧蒸気止弁(主蒸気止弁)
61A 入口
62 中圧蒸気止弁(再熱蒸気止弁)
63 低圧蒸気止弁
70 制御弁
71 高圧制御弁(主制御弁)
72 中圧制御弁(再熱制御弁)
73 低圧制御弁
80 タービンバイパス弁
81 高圧タービンバイパス弁
81A ハウジング
81B 弁体
81C 蓋部材
81D 閉塞部材
82 中圧タービンバイパス弁
83 低圧タービンバイパス弁
100 配管部材
100B 配管部材
100C 配管部材
100D 配管部材
100E 配管部材
100F 配管部材
100G 配管部材
100H 配管部材
100I 配管部材
100J 配管部材
100K 配管部材
100L 配管部材
100M 配管部材
101 第1管部
101R 第1流路
102 第2管部
102R 第2流路
103 第3管部
103A 直管部
103B 直管部
103K 曲折部
103Ka 曲折部
103Kb 曲折部
103R 第3流路
104 接続部
104R 接続流路
105 入口
106 出口
107 出口
108 開口
200 配管部材
201 管部
202 管部
203 管部
204 接続部
1000 配管システム
AX1 第1中心軸
AX2 第2中心軸
AX3 第3中心軸
AX4 中心軸
Claims (11)
- 蒸気タービンプラントの配管システムであって、
第1流路を有する第1管部と、第2流路を有する第2管部と、前記第1管部と前記第2管部との間に配置され前記第1流路と前記第2流路とを結ぶ接続流路を有する接続部と、開口を介して前記接続流路と結ばれる第3流路を有する第3管部と、を有し、前記第1管部に蒸気が供給される配管部材と、
前記第3管部と接続される蒸気止弁と、
前記第2管部と接続されるタービンバイパス弁と、
を備え、
前記第1管部の第1中心軸と前記第2管部の第2中心軸とがなす角度は、前記第1中心軸と前記第3管部の第3中心軸とがなす角度よりも大きい、
配管システム。 - 前記第1中心軸と前記第2中心軸とは、平行である、
請求項1に記載の配管システム。 - 前記第1中心軸と前記第2中心軸とは、一致する、
請求項1又は請求項2に記載の配管システム。 - 前記第1中心軸と前記第3中心軸とは、直交する、
請求項1から請求項3のいずれか一項に記載の配管システム。 - 前記開口は、前記接続部の中心軸よりも上方に配置される、
請求項1から請求項4のいずれか一項に記載の配管システム。 - 前記第3管部からの前記蒸気が流入する前記蒸気止弁の入口は、前記接続部の中心軸よりも上方に配置される、
請求項1から請求項5のいずれか一項に記載の配管システム。 - 前記第2管部は、前記第1管部よりも上方に配置される、
請求項1から請求項6のいずれか一項に記載の配管システム。 - 請求項1から請求項7のいずれか一項に記載の配管システムを備える蒸気タービンプラント。
- 蒸気タービンプラントの配管システムのクリーニング方法であって、
前記配管システムは、
第1流路を有する第1管部と、第2流路を有する第2管部と、前記第1管部と前記第2管部との間に配置され前記第1流路と前記第2流路とを結ぶ接続流路を有する接続部と、開口を介して前記接続流路と結ばれる第3流路を有する第3管部と、を有し、前記第1管部の第1中心軸と前記第2管部の第2中心軸とがなす角度が、前記第1中心軸と前記第3管部の第3中心軸とがなす角度よりも大きい配管部材と、
前記第1管部と接続された蒸気生成装置と、
内部をクリーニングされた前記第3管部と接続された蒸気止弁と、
前記第2管部と接続されたタービンバイパス弁と、
を含み、
前記蒸気止弁を閉じる段階と、
前記蒸気生成装置から蒸気を供給して、前記第1管部及び前記第2管部をクリーニングする段階と、
を含む、
配管システムのクリーニング方法。 - 前記蒸気止弁を閉じる試験をすることを含み、
前記試験の終了後、前記蒸気止弁が閉じられ、
前記蒸気止弁を閉じた状態で、前記蒸気生成装置から蒸気を供給して、前記クリーニングする、
請求項9に記載の配管システムのクリーニング方法。 - 前記タービンバイパス弁が分解された状態で、前記第2管部と前記タービンバイパス弁との接続が実施され、
前記クリーニング後、前記タービンバイパス弁が組み立てられる、
請求項9又は請求項10に記載の配管システムのクリーニング方法。
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DE112015004923.1T DE112015004923T5 (de) | 2014-10-30 | 2015-10-07 | Rohrleitungssystem, Dampfturbinenanlage und Verfahren zum Reinigen des Rohrsystems |
KR1020177011434A KR101933330B1 (ko) | 2014-10-30 | 2015-10-07 | 배관 시스템, 증기 터빈 플랜트, 및 배관 시스템의 클리닝 방법 |
US15/515,314 US10337351B2 (en) | 2014-10-30 | 2015-10-07 | Piping system, steam turbine plant, and method of cleaning piping system |
CN201580056349.XA CN107075968B (zh) | 2014-10-30 | 2015-10-07 | 配管系统、蒸汽轮机设备以及配管系统的清洗方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018236891A1 (en) * | 2017-06-20 | 2018-12-27 | Boyle Energy Services & Technology, Inc. | COMMISSIONING OF THERMAL PLANTS |
CN109692856A (zh) * | 2019-01-16 | 2019-04-30 | 福建省工业设备安装有限公司 | 一种蒸汽管道吹扫的降噪装置及降噪方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6749074B2 (ja) | 2015-02-03 | 2020-09-02 | 三菱日立パワーシステムズ株式会社 | 配管システムのクリーニング方法、配管システム、及び蒸気タービンプラント |
JP6726393B2 (ja) * | 2017-02-24 | 2020-07-22 | トヨタ自動車株式会社 | 燃料電池システム |
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JP7384771B2 (ja) | 2020-09-18 | 2023-11-21 | 三菱重工業株式会社 | 蒸気タービンプラント、及びそのクリーニング方法 |
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CN114247710B (zh) * | 2021-12-21 | 2022-10-21 | 华能山东石岛湾核电有限公司 | 一种核电站主蒸汽管道吹扫系统与吹扫方法 |
CN114658501B (zh) * | 2022-03-29 | 2023-12-01 | 淮南市泰能科技发展有限公司 | 一种汽轮机循环水系统检修系统及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6122517U (ja) * | 1984-07-14 | 1986-02-10 | 三菱重工業株式会社 | スケ−ル拾集装置 |
JPH0828208A (ja) * | 1994-07-12 | 1996-01-30 | Kyushu Electric Power Co Inc | 固体粒子による蒸気タービン翼の侵食損傷防止方法及び防止装置 |
JPH08144710A (ja) * | 1994-11-17 | 1996-06-04 | Mitsubishi Heavy Ind Ltd | ボイラの蒸気配管のスケール捕集装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4449544A (en) * | 1980-10-08 | 1984-05-22 | Crosby Valve & Gage Company | Blowdown valve |
JPS6122517A (ja) | 1984-07-09 | 1986-01-31 | 東光株式会社 | スイツチ筐体の成形方法 |
JPS61261604A (ja) | 1985-05-15 | 1986-11-19 | Hitachi Ltd | ブロ−イングアウト装置 |
JP2008215098A (ja) * | 2007-02-28 | 2008-09-18 | Mitsubishi Heavy Ind Ltd | ボイラ蒸気管のスケール捕集装置 |
-
2014
- 2014-10-30 JP JP2014222005A patent/JP6092175B2/ja active Active
-
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6122517U (ja) * | 1984-07-14 | 1986-02-10 | 三菱重工業株式会社 | スケ−ル拾集装置 |
JPH0828208A (ja) * | 1994-07-12 | 1996-01-30 | Kyushu Electric Power Co Inc | 固体粒子による蒸気タービン翼の侵食損傷防止方法及び防止装置 |
JPH08144710A (ja) * | 1994-11-17 | 1996-06-04 | Mitsubishi Heavy Ind Ltd | ボイラの蒸気配管のスケール捕集装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018236891A1 (en) * | 2017-06-20 | 2018-12-27 | Boyle Energy Services & Technology, Inc. | COMMISSIONING OF THERMAL PLANTS |
US11802689B2 (en) | 2017-06-20 | 2023-10-31 | Boyle Energy Services & Technology, Inc. | Commissioning power plants |
CN109692856A (zh) * | 2019-01-16 | 2019-04-30 | 福建省工业设备安装有限公司 | 一种蒸汽管道吹扫的降噪装置及降噪方法 |
CN109692856B (zh) * | 2019-01-16 | 2023-11-28 | 福建省工业设备安装有限公司 | 一种蒸汽管道吹扫的降噪装置及降噪方法 |
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KR20170066484A (ko) | 2017-06-14 |
CN107075968A (zh) | 2017-08-18 |
KR101933330B1 (ko) | 2018-12-27 |
DE112015004923T5 (de) | 2017-07-13 |
JP2016089656A (ja) | 2016-05-23 |
CN107075968B (zh) | 2019-11-05 |
US20170211414A1 (en) | 2017-07-27 |
JP6092175B2 (ja) | 2017-03-08 |
US10337351B2 (en) | 2019-07-02 |
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