WO2014041855A1 - 捕集装置及びこれを備えるガスタービンプラント - Google Patents
捕集装置及びこれを備えるガスタービンプラント Download PDFInfo
- Publication number
- WO2014041855A1 WO2014041855A1 PCT/JP2013/064342 JP2013064342W WO2014041855A1 WO 2014041855 A1 WO2014041855 A1 WO 2014041855A1 JP 2013064342 W JP2013064342 W JP 2013064342W WO 2014041855 A1 WO2014041855 A1 WO 2014041855A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- reduction
- flow path
- outlet
- collection device
- Prior art date
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- 239000002245 particle Substances 0.000 claims abstract description 57
- 239000012530 fluid Substances 0.000 claims abstract description 36
- 239000000446 fuel Substances 0.000 claims description 25
- 239000007789 gas Substances 0.000 description 56
- 230000000052 comparative effect Effects 0.000 description 30
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910001111 Fine metal Inorganic materials 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- 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
- 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
- F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/222—Fuel flow conduits, e.g. manifolds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- 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
- F05D2220/32—Application in turbines in gas turbines
-
- 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
- F05D2240/35—Combustors or associated equipment
-
- 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
- F05D2260/60—Fluid transfer
- F05D2260/607—Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
Definitions
- the present invention relates to a collection device for collecting particles contained in a fluid and a gas turbine plant equipped with the collection device.
- Patent Document 1 examples of techniques for collecting particles contained in a fluid flowing in a pipe or the like include Patent Document 1 and Patent Document 2.
- Patent Document 1 mentions a method of separating and removing particles contained in a vapor stream.
- the main steam pipe is bent from the horizontal direction to the vertical direction.
- the main steam pipe is branched into a vertical direction and a horizontal direction, thereby creating a flow path in the vertical direction and the horizontal direction.
- the flow direction of the steam and particles in the main steam pipe changes from the horizontal direction to the vertical direction due to the bent portion, and goes straight downward in the vertical direction under the influence of inertia force and gravity generated in the vertical direction.
- Patent Document 2 discloses a method for separating and collecting metal fine powder mixed in air during noble metal polishing operations such as ring processing and dental technicians.
- fine metal powder is mainly separated and collected by changing the wind speed and direction of the air collected and sucked. That is, after the air containing the metal fine powder travels straight from the air inflow portion of the separation and collection device and then flows in, the wind speed is increased by passing through the narrowed hole. Thereafter, the air is discharged by changing the wind direction in a direction crossing the straight traveling direction with a dust absorber.
- the metal powder with high specific gravity cannot keep up with such a rapid change in wind speed and direction, and goes straight by inertia without changing the direction in the same direction as air.
- the fine metal powder can be collected in the collected metal powder recovery unit.
- JP-A-8-28208 Japanese Patent Application Laid-Open No. 57-113820
- the present invention has been made to meet the above-described demand, and provides a collection device capable of improving collection efficiency and a gas turbine plant equipped with the collection device.
- the collection device to meet the above-described demand is In a collecting device that collects particles contained in a fluid, a curved tube that turns the fluid flowing in a first direction to a second direction that is directed vertically downward from the first direction.
- the second direction A branch pipe for branching the fluid flowing to the second direction and a third direction different from the second direction, and an outlet on the second direction side of the branch pipe
- a collecting part for collecting the particles in the fluid
- the flow path reducing part in the reducing and expanding pipe is eccentric with respect to the center of the inlet opening of the reducing and expanding pipe, When viewed in two directions, the flow path contraction is based on the center of the inlet opening.
- the eccentric position of the parts is in the range of 90 ° ⁇ 270 ° from the first orientation.
- the collection device to meet the above-mentioned demand is In a collecting device that collects particles contained in a fluid, a curved tube that turns the fluid flowing in a first direction to a second direction that is directed vertically downward from the first direction.
- a reduction expansion pipe connected to the outlet of the curved pipe and expanding the flow path of the fluid flowing in the second direction after being reduced, and connected to the outlet of the reduction expansion pipe, the second direction
- a collecting part for collecting the particles in the fluid, and the flow path reducing part in the reducing and expanding pipe when viewed in the second direction is an inlet opening of the reducing and expanding pipe.
- the “radial direction from the center of the inlet opening of the reduced expansion tube” is a radial direction that is a direction away from the center of the inlet opening in a plane parallel to a virtual plane including the inlet opening of the reduced expansion tube.
- the particles included in the fluid flowing in the first direction are turned in the second direction when passing through the curved pipe as the first stage. For this reason, it distribute
- the particles flow in the second direction while being influenced by gravity with the distribution flow path being substantially narrowed and being biased toward the inlet side of the curved pipe. To do. For this reason, it hardly circulates in the third direction.
- the fluid is less affected by gravity and centrifugal force than particles, and diffuses and circulates after passing through the flow path reduction portion of the reduction / expansion pipe, and therefore flows in the third direction when passing through the branch pipe. Thereby, many particles gather in the collection part connected to the exit of the 2nd direction side of a branch pipe, Therefore The collection efficiency of particle
- the “first direction” and the “third direction” are directions including more horizontal components than the “second direction”.
- the third direction is based on the center of the outlet opening of the reduced expansion tube when viewed in the second direction. It is preferably within a range of 90 ° to 270 ° from the eccentric position of the flow path reducing portion.
- the outlet of the third direction side of the branch pipe is the center of the outlet opening of the reduced expansion pipe when viewed in the second direction. Is preferably on the side opposite to the eccentric position of the flow path reducing portion.
- the particles that are biased when passing through the flow path reducing portion of the reduction / expansion pipe take a second distance from the outlet on the third direction side of the branch pipe when passing through the branch pipe. Circulate in the direction. Therefore, in these collection devices, almost no particles are mixed in the branch flow path on the third direction side of the branch pipe, and almost all particles flow in the branch flow path on the second direction side of the branch pipe. The collection efficiency can be further improved.
- gas turbine plant including a compressor, a turbine, and a combustor; a gas line that supplies gas fuel as the fluid to the combustor; and any one of the collection devices disposed in the gas line. It is characterized by that.
- any one of the above-described collection devices is arranged in the gas line, particles in the gas fuel can be removed, and the gas fuel from which the particles have been removed is used as a combustor. Can be supplied.
- the collection efficiency of particles contained in a fluid can be improved.
- FIG. 1 is a system diagram of a gas turbine plant including a collection device according to an embodiment of the present invention. It is a perspective view of the collection device concerning one embodiment of the present invention.
- FIG. 4 is a schematic diagram of the collection device of each of Examples 1 to 4 and Comparative Examples 1 to 3 of the present invention, in which FIG. (A) is a schematic diagram of Example 1, and (b) of FIG. (C) is a schematic diagram of Example 3, FIG. (D) is a schematic diagram of Example 4, (e) is a schematic diagram of Comparative Example 1, and (f) is a schematic diagram of Comparative Example 2. The figure and (g) are schematic diagrams of Comparative Example 3.
- FIG. 1 is a system diagram of a gas turbine plant including a collection device according to an embodiment of the present invention. It is a perspective view of the collection device concerning one embodiment of the present invention.
- FIG. 4 is a schematic diagram of the collection device of each of Examples 1 to 4 and Comparative Examples 1 to 3 of the present invention, in which FIG. (A
- a gas turbine plant 1 including a collection device 3 includes a gas turbine 10 having a compressor C, a turbine T, and a combustor 11, and power generation connected to the gas turbine 10.
- the gas line 2 that is a fuel pipe that supplies the gas fuel F that is a fluid to the combustor 11, the gas tank 12 that is connected to the gas line 2 and is the supply source of the gas fuel F, And a collection device 3 disposed in the gas line 2 between the gas tank 12 and the strainer 13.
- the collection device 3 of this embodiment is disposed in the gas line 2.
- the collecting device 3 includes a curved pipe 31 that changes the flow direction from the first line 21 extending in the first direction X to the second direction Z, and the curved pipe 31 to the second direction Z.
- a branch pipe 32 that branches the second line 22 extending into the third line 23 extending in the second direction Z and the third direction Y; a curved pipe 31 and a branch pipe 32;
- the first line 21 is a part of the gas line 2.
- the first line 21 is connected to the gas tank 12 and the curved pipe 31 and extends in the first direction X that is the side.
- the second line 22 is arranged so as to extend in the second direction Z that is vertically downward in the collection device 3.
- the third line 23 is a part of the gas line 2.
- the third line 23 is connected to the branch pipe 32 and the strainer 13 (shown in FIG. 1), and is lateral to a third direction Y orthogonal to the first direction X and the second direction Z. It is arranged to extend.
- the curved pipe 31 is formed of an L-shaped elbow bent into an L shape having a circular cross section.
- the curved pipe 31 includes a curved pipe inlet 311 that is connected to the first line 21 on the inlet side, a bent portion 312 that bends the flow direction in the second direction Z, and a second line that is on the outlet side. 22 and a bent tube outlet 313 connected to the terminal 22.
- the branch pipe 32 is formed of a T-shaped pipe joint having a circular cross section.
- the branch pipe 32 has a straight pipe part 322 extending in the second direction Z and an outlet pipe part 321 extending in the third direction Y from the middle of the straight pipe part 322.
- the straight pipe part 322 is vertically straight and connected to the second line 22 on the curved pipe 31 side, and the straight pipe connected to the second line 22 on the collection pipe 34 side and vertically downward.
- an outlet 324 is arranged to extend from the middle of the straight pipe portion 322 in the third direction Y, and is connected to the third line 23.
- the reduction / expansion pipe 33 is disposed between the curved pipe 31 and the branch pipe 32 in the second line 22.
- the reduced expansion tube 33 is formed by connecting the reduced diameter sides of a pair of eccentric reducers 332 to each other.
- a connecting portion where the reduced diameter sides of the eccentric reducer 332 are connected to each other by the reduction / expansion pipe 33 forms a flow path reduction portion 331.
- the axial center of the flow path reducing portion 331 is the radial direction in the second line 22, and the curved pipe inlet 311 side that is the inlet side of the curved pipe 31 in the first direction X from the central axis C of the second line 22. It is arranged at the position biased to.
- the eccentric reducer 332 may be used by appropriately selecting the cross-sectional area size of the flow path reducing portion 331 according to the size of the particles P to be removed from the gas fuel F or the like.
- the collection tube 34 is a tube material bent into an L shape having a circular cross section.
- the collection pipe 34 is arranged at the lower end of the second line 22 that is the tip of the straight pipe outlet 324 in the branch pipe 32.
- the collection tube 34 has one opening connected to the lower end of the second line 22 and has an opening / closing lid 341 at the other opening.
- the gas fuel F containing the particles P that are impurities flows through the first line 21 that is supplied from the gas tank 12 and is the gas line 2.
- the gas fuel F that has reached the collecting device 3 flows into the curved pipe 31 from the curved pipe inlet 311, the direction of circulation is changed at the bent part 312 of the curved pipe 31, and the second line from the curved pipe outlet 313. It flows out to 22.
- the gas fuel F passes through the flow path reducing portion 331 in which the flow path in the reduction / expansion pipe 33 is narrowed, and flows into the branch pipe 32 from the straight pipe inlet 323.
- the gas fuel F flowing in the branch pipe 32 is changed in the flow direction in the branch pipe 32 and flows out to the third line 23 through the outlet pipe portion 321. Thereafter, the gas fuel F circulates in the third line 23, reaches the combustor 11 through the strainer 13, and burns there.
- the turbine T is driven by the combustion gas generated by the combustion of the gas fuel F, and the generator G generates power by driving the turbine T.
- many particles P contained in the gas fuel F are sent from the straight pipe outlet 324 to the collecting pipe 34 instead of the outlet pipe 321 in the branch pipe 32, gathered in the collecting pipe 34, and collected. It is recovered by removing the open / close lid 341 of the collecting tube 34.
- the centrifugal force is applied to the particles P contained in the gas fuel F at the bent portion 312 when passing through the curved pipe 31.
- the particles P contained in the gas fuel F are guided from the curved pipe outlet 313 to the second line 22, they are emitted in a radial direction with respect to the central axis C (see FIG. 4) of the second line 22. Therefore, they are concentrated and fall on the opposite side to the curved pipe entrance 311.
- the flow path reduction part 331 is the radial direction with respect to the central axis C of the 2nd line 22, and is eccentrically arrange
- the particles P gathered and fallen in a biased direction are directed toward the bent tube inlet portion 311 side while being subjected to centrifugal force again along the shape of the reduction / expansion tube 33. Further, the particles P pass through the flow path reducing portion 331 in which the flow path is narrowed, and are thus concentrated while being narrowed further toward the bent pipe inlet 311 side. Due to the influence, it falls vertically downward while being biased toward the curved pipe inlet 311 side. On the other hand, the gas fuel F is less affected by gravity and centrifugal force than the particles P, and diffuses and circulates after passing through the flow path reducing portion 331.
- the outlet pipe portion 321 of the branch pipe 32 is connected to the straight pipe portion 322 in the third direction Y.
- the inlet opening of the outlet pipe part 321 that is a connection part with the straight pipe part 322 is from a flow path reduction part 331 that is biased toward the curved pipe inlet part 311 with respect to the central axis C of the second line 22. It is arranged at a position of 90 °. Since the particles P are concentrated and fall in the straight pipe part 322 of the branch pipe 32 toward the curved pipe inlet part 311 side, the particles P circulate at a distance from the inlet opening of the outlet pipe part 321, and the outlet pipe which is the side. It hardly circulates to the part 321.
- the gas fuel F is less affected by gravity and centrifugal force than the particles P, and diffuses and circulates after passing through the flow path reducing portion 331. It flows from 321 to the third line 23.
- grains contained in the gas fuel F by the collection apparatus 3 arrange
- the angle display is based on the central axis C (see FIGS. 4 and 5) of the second line 22 when viewed in the second direction Z.
- a clockwise angle of the central axis C from one direction X (0 °) is shown.
- the center of the bent tube outlet 313 (or outlet opening) of the bent tube 31, the center of the inlet portion (or inlet opening) of the reduced expansion tube, and the center of the outlet portion (or outlet opening) are all the second line. 22 on the central axis C.
- the collection device 3a of the first embodiment is a reduced expansion tube in which a flow path reduction portion 331a is disposed at a position 180 ° from the first direction X. 33a. Further, the collection device 3a includes a branch pipe 32a having an outlet pipe portion 321a connected in a direction of 90 ° from the first direction X.
- the collection apparatus 3a of Example 1 is the same as the collection apparatus 3 demonstrated in this embodiment.
- the collection device 3 b of the second embodiment is a reduction expansion tube in which a flow path reduction portion 331 b is disposed at a position of 270 ° from the first direction X. 33b. Moreover, this collection apparatus 3b is provided with the branch pipe 32a which has the exit pipe part 321a connected in the direction of 90 degrees from the 1st direction X similarly to Example 1.
- FIG. That is, the collection device 3b of the second embodiment is different from the first embodiment in the position of the flow path reducing portion 331b in the reduction / expansion pipe 33b.
- the collection device 3 c of the third embodiment is a reduction expansion tube in which a flow path reduction portion 331 c is disposed at a position of 225 ° from the first direction X. 33c. Further, the collection device 3c includes a branch pipe 32c having an outlet pipe portion 321c connected in a direction of 45 ° from the first direction X. That is, the collection device 3c of the third embodiment is different from the first embodiment in the position of the flow path reducing portion 331c in the reduction / expansion pipe 33c and the branch pipe 32c.
- Example 4 As shown in FIGS. 3D, 4, and 5, in the collection device 3 d of the fourth embodiment, as in the first embodiment, the flow path reducing portion 331 a is disposed at a position 180 ° from the first direction X.
- the reduction / expansion tube 33a is provided.
- the collection device 3d includes a branch pipe 32d having an outlet pipe portion 321d connected in the first direction X, that is, in the direction of 0 °. That is, the collection device 3d of the fourth embodiment is different from the first embodiment in the branch pipe 32d.
- the collection device 3 e of Comparative Example 1 does not include the reduction / expansion tube 33.
- the collection device 3e includes a branch pipe 32a having an outlet pipe portion 321a connected in a direction of 90 ° from the first direction X. That is, the collection device 3e of Comparative Example 1 is different from Example 1 in that it does not include the reduction / expansion tube 33.
- the collection device 3 f of Comparative Example 2 is a reduction / expansion tube 33 f in which a flow path reduction portion 331 f is disposed on the central axis C of the second line 22. It has.
- the reduced expansion tube 33f is formed by connecting the reduced diameter sides of a pair of concentric reducers to each other.
- the collection device 3f includes a branch pipe 32a having an outlet pipe portion 321a connected in a 90 ° direction from the first direction X, as in the first embodiment. That is, the collection device 3 f of Comparative Example 2 is different from Example 1 in that the flow path reducing portion 331 f is not eccentric with respect to the central axis C of the second line 22.
- the collection device 3 g of Comparative Example 3 is a reduction / enlargement in which the flow path reduction portion 331 g is arranged in the first direction X, that is, at a position of 0 °.
- a tube 33g is provided.
- this collection apparatus 3g is provided with the branch pipe 32a which has the exit pipe part 321a connected to the direction of 90 degrees from the 1st direction X similarly to Example 1.
- FIG. That is, the collection device 3g of Comparative Example 3 is different from that of Example 1 in the position of the flow path reducing portion 331g in the reduction / expansion tube 33g.
- FIGS. 6 to 9 show the results of comparison of the collection rate of each example and each comparative example by CFD (Computational Fluid Dynamics) analysis.
- the collection rate in particle size was compared between Example 1 and Comparative Examples 1 and 2.
- the collection device 3e of Comparative Example 1 that does not include the reduction / expansion tube 33 is compared with the collection device 3a of Example 1 that includes the reduction / expansion tube 33 and the collection device 3f of Comparative Example 2, the reduction / expansion The example 1 and the comparative example 2 provided with the pipe
- Example 1 and Comparative Example 2 are compared, the second line of the reduction / expansion tube 33 is more than that of Comparative Example 2 in which the flow path reduction portion 331f is disposed on the central axis C of the second line 22.
- Example 1 in which the flow path reduction portion 331a is disposed at a position eccentric from the central axis C of 22 showed a higher collection rate.
- the smaller the particle diameter the more the difference in the collection rate appears, and the higher the embodiment 1 in which the flow path reduction portion 331a is arranged at a position eccentric from the central axis C of the second line 22. It was confirmed that the concentration was exhibited.
- Example 3 showed a high collection rate. Furthermore, the smaller the particle size, the more markedly the difference in the collection rate, and it was confirmed that Example 1 and Example 3 exhibited a high collection rate.
- Example 1 and Example 4 the trapping at the particle diameter when the connection position of the outlet pipe part 321 of the branch pipe 32 is arranged at the position opposite to the curved pipe inlet part 311 side.
- the collection rate was compared.
- the collection device 3a according to the first embodiment having the outlet pipe portion 321a connected in the direction of 90 ° from the first direction X, and the outlet pipe portion 321d connected in the direction of 180 ° from the first direction X. Both the collection devices 3d of Example 4 having a high collection rate.
- the flow path reduction part 331 (331g) is disposed on the side opposite to the curved pipe inlet part 311 as in Comparative Example 3, and the flow path as in Examples 1 to 4. It has been found that the collection rate can be improved by arranging the reducing part 331 (the channel reducing part 331a, the channel reducing part 331b, the channel reducing part 331c) on the curved pipe inlet part 311 side. Furthermore, it was found that the collection rate can be improved when the connection position of the outlet pipe portion 321 in the branch pipe 32 is connected to the position opposite to the flow path reduction portion 331 as in Examples 1 to 4.
- the flow path reduction portion 331 of the reduction / expansion tube 33 exhibits a high collection rate when it is disposed in the range of 180 ° to 270 ° from the first direction X, and in particular, from the first direction X to 180 °. It has been found that a higher collection rate is exhibited when it is disposed in the range of ° to 225 °.
- the flow path reduction portion 331 of the reduction / expansion tube 33 is disposed in a range of 90 ° to 180 °, which is a range symmetrical to a range of 180 ° to 270 ° with respect to the first direction X. It was found that a high collection rate was exhibited.
- the flow path reduction portion 331 of the reduction / expansion tube 33 is arranged in a range of 135 ° to 180 ° that is symmetrical to a range of 180 ° to 225 ° with respect to the first direction X, the height is higher. It is also clear that the collection rate is demonstrated. That is, the flow path reduction portion 331 of the reduction / expansion tube 33 exhibits a high collection rate if it is disposed in the range of 90 ° to 270 ° from the first direction X, and in particular, 135 ° from the first direction X. It has been found that a higher collection rate is exhibited when it is arranged in the range of ⁇ 225 °.
- the flow path reducing portion 331 of the reduction / expansion tube 33 is located on the radial side from the central axis C of the second line 22 and on the curved tube inlet with reference to the central axis C. It was found that a high collection rate was exhibited when the part 311 was eccentric.
- the collection rate can be improved when the connection position of the outlet pipe portion 321 in the branch pipe 32 is 90 ° to 180 °, and further 180 ° to 270 ° from the position of the flow path reduction portion 331.
- the outlet of the branch pipe 32 on the side connected to the strainer 13 is, when viewed in the second direction Z, with respect to the center C of the outlet opening of the reduction / expansion pipe 33 as a reference. It was found that the collection rate can be improved on the side opposite to the eccentric position.
- the second direction Z is vertically downward, but in the present invention, the second direction is vertically lower than the first direction and the third direction. It only needs to be oriented to the side.
- the first direction and the third direction are both horizontal directions.
- the first direction and the third direction include a horizontal component.
- the eccentric reducer 332 is used as a component for forming the flow path reducing portion 331.
- the present invention is not limited to this.
- the target fluid is the gas fuel F, but the present invention is not limited to this.
- a fluid such as steam may be targeted.
- the collection efficiency of particles contained in a fluid can be improved.
- F gas fuel, P ... particles, 1 ... gas turbine plant, 10 ... gas turbine, C ... compressor, T ... turbine, 11 ... combustor, G ... generator, 2 ... gas line, 12 ... gas tank, 13 ... Strainer, 3 ... collection device, 31 ... curved pipe, 311 ... curved pipe inlet, 312 ... bent part, 313 ... curved pipe outlet, 32 ... branch pipe, 321 ... outlet pipe part, 322 ... straight pipe part, 323 ... straight pipe inlet part, 324 ... straight pipe outlet part, 33 ... reduction expansion pipe, 332 ... eccentric reducer, 331 ... flow path reduction part, 21 ... first line, 22 ... second line, 23 ... third line, 34 ... Collection tube (collection part), 341 ... Opening / closing lid
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- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
Description
特許文献1では、蒸気流中に含まれている粒子を分離除去する方法が挙げられている。
この方法では、主蒸気管を水平方向から鉛直方向へ屈曲させる。さらに、この方法では、屈曲後に、主蒸気管を鉛直方向と水平方向とに分岐させ、鉛直方向と水平方向への流路を作る。
これにより、主蒸気管内の蒸気及び粒子は、屈曲部によって水平方向から鉛直方向へ流通方向が変わり、鉛直方向へ生じる慣性力や重力の影響で鉛直下方向へと直進する。その後、蒸気中の多くの粒子は、分岐部内で鉛直下方向へ直進し続ける。一方、蒸気は粒子ほど慣性力や重力の影響を受けないため、分岐部で粒子の一部を含みながら水平方向に分岐された主蒸気管へと流れていく。これによって、分岐後の水平方向へ流れていく蒸気中の粒子を少なくできる。
この方法では、集塵吸入された空気の風速や風向を変化させることにより、主に金属微粉末が分離収集される。つまり、金属微粉末を含んだ空気が、分離収集装置の空気流入部から直進して流入した後に、細径化された孔を通過することで風速が増加される。その後、空気は、吸塵器で直進方向と交差する方向へ風向を変更して排出される。ところが、比重の大きい金属微粉末は、このような風速、風向の急激な変化についていくことができず、空気と同じ方向へ向きを変えることなく慣性力により直進するため、直進方向の先に配置された金属粉回収部内に金属微粉末を収集することができる。
流体中に含まれている粒子を捕集する捕集装置において、第一の向きへ流れる前記流体を、前記第一の向きよりも鉛直下方側を指向する第二の向きへと転向させる曲管と、前記曲管の出口に接続され、前記第二の向きへ流れる前記流体の流路を縮小させた後に拡大させる縮小拡大管と、前記縮小拡大管の出口に接続され、前記第二の向きへ流れる前記流体を、前記第二の向きと、前記第二の向きとは異なる向きである第三の向きと、に分岐させる分岐管と、前記分岐管の前記第二の向き側の出口に接続され、前記流体中の前記粒子が集められる捕集部と、を備え、前記縮小拡大管における流路縮小部が前記縮小拡大管の入口開口の中心に対して偏芯しており、前記第二の向きに見たときに、前記入口開口の前記中心を基準にして、前記流路縮小部の偏芯位置が前記第一の向きから90°~270°の範囲内であることを特徴とする。
流体中に含まれている粒子を捕集する捕集装置において、第一の向きへ流れる前記流体を、前記第一の向きよりも鉛直下方側を指向する第二の向きへと転向させる曲管と、前記曲管の出口に接続され、前記第二の向きへ流れる前記流体の流路を縮小させた後に拡大させる縮小拡大管と、 前記縮小拡大管の出口に接続され、前記第二の向きへ流れる前記流体を、前記第二の向きと、前記第二の向きとは異なる向きである第三の向きと、に分岐させる分岐管と、前記分岐管の前記第二の向き側の出口に接続され、前記流体中の前記粒子が集められる捕集部と、を備え、前記縮小拡大管における流路縮小部は、前記第二の向きに見たときに、前記縮小拡大管の入口開口の中心から放射方向側で且つ前記中心を基準にして前記曲管の入口側に偏芯していることを特徴とする。
なお、「縮小拡大管の入口開口の中心から放射方向」とは、縮小拡大管の入口開口を含む仮想平面に平行な面において、この入口開口の中心から遠ざかる方向である放射方向である。
なお、ここでの「第一の向き」及び「第三の向き」は、「第二の向き」よりも水平方向成分を多く含む向きである。
圧縮機とタービンと燃焼器とを有するガスタービンと、前記流体としてのガス燃料を前記燃焼器へ供給するガスラインと、前記ガスライン中に配置される上記いずれかの捕集装置と、を備えることを特徴とする。
図1に示すように、本実施形態の捕集装置3を備えるガスタービンプラント1は、圧縮機CとタービンTと燃焼器11とを有するガスタービン10と、ガスタービン10と接続されている発電機Gと、流体であるガス燃料Fを燃焼器11へ供給する燃料配管であるガスライン2と、ガスライン2と接続されておりガス燃料Fの供給元であるガスタンク12と、ガスライン2中に配置されているストレーナ13と、ガスタンク12とストレーナ13との間のガスライン2中に配置されている捕集装置3とを備える。
第一ライン21は、ガスライン2の一部である。この第一ライン21は、ガスタンク12と曲管31とに接続されており、側方である第一の向きXへ延在して配置されている。
第二ライン22は、捕集装置3内を鉛直下向きである第二の向きZへ延在して配置されている。
第三ライン23は、ガスライン2の一部である。この第三ライン23は、分岐管32とストレーナ13(図1に示す)とに接続されており、側方であり第一の向きX及び第二の向きZに直交する第三の向きYへ延在して配置されている。
なお、偏芯レデューサ332は、ガス燃料Fから除去する粒子Pの大きさ等に合わせて、流路縮小部331の断面積サイズを適宜選択し使用されればよい。
上記のような捕集装置3を備えたガスタービンプラント1によれば、不純物である粒子Pを含んだガス燃料Fは、ガスタンク12から供給されガスライン2である第一ライン21内を流通し捕集装置3に到達する。捕集装置3に到達したガス燃料Fは、曲管31へ曲管入口部311から流入し、曲管31の屈曲部312で流通の向きが変換されて、曲管出口部313から第二ライン22へ流出する。そして、ガス燃料Fは、縮小拡大管33内の流路の絞られた流路縮小部331を通過し、直管入口部323から分岐管32内へ流入する。分岐管32内を流通するガス燃料Fは、分岐管32内で流通の向きが変換されて出口管部321を介して第三ライン23へ流出する。その後、ガス燃料Fは、第三ライン23内を流通し、ストレーナ13を介して、燃焼器11に到達し、そこで燃焼する。このガス燃料Fの燃焼で生成された燃焼ガスにより、タービンTが駆動し、このタービンTの駆動により、発電機Gによる発電が行われる。
一方、ガス燃料Fに含まれている多くの粒子Pは、分岐管32内で出口管部321ではなく直管出口部324から捕集管34へ送られ、捕集管34内に集まり、捕集管34の開閉蓋341を取り外すことで回収される。
一方、ガス燃料Fは重力や遠心力の影響を粒子Pほど受けず、流路縮小部331を通過後に拡散して流通する。
一方、前述したようにガス燃料Fは重力や遠心力の影響を粒子Pほど受けず、流路縮小部331を通過後に拡散して流通しているため、分岐管32内を通過時に出口管部321から第三ライン23へ流れていく。
まず、各種実施例1~4及び各種比較例1~3の構造について説明する。
ここで、以下において、図3~5に示すように、角度表示は、第二の向きZに見たとき、第二ライン22の中心軸C(図4,5参照)を基準にして、第一の向きX(0°)から中心軸Cの時計回りの角度を示す。なお、曲管31の曲管出口部313(又は出口開口)の中心、縮小拡大管の入口部(又は入口開口)の中心及び出口部(又は出口開口)の中心は、いずれも、第二ライン22の中心軸Cに位置している。
図3(a)及び図4、5に示すように、この実施例1の捕集装置3aは、第一の向きXから180°の位置に流路縮小部331aが配置されている縮小拡大管33aを備えている。また、この捕集装置3aは、第一の向きXから90°の向きに接続されている出口管部321aを有する分岐管32aを備えている。
なお、実施例1の捕集装置3aは、本実施形態で説明した捕集装置3と同一のものである。
図3(b)及び図4、5に示すように、この実施例2の捕集装置3bは、第一の向きXから270°の位置に流路縮小部331bが配置されている縮小拡大管33bを備えている。また、この捕集装置3bは、実施例1と同様、第一の向きXから90°の向きに接続されている出口管部321aを有する分岐管32aを備えている。すなわち、実施例2の捕集装置3bは、縮小拡大管33bにおける流路縮小部331bの位置が実施例1と相違する。
図3(c)及び図4、5に示すように、この実施例3の捕集装置3cは、第一の向きXから225°の位置に流路縮小部331cが配置されている縮小拡大管33cを備えている。また、この捕集装置3cは、第一の向きXから45°の向きに接続されている出口管部321cを有する分岐管32cを備えている。すなわち、実施例3の捕集装置3cは、縮小拡大管33cにおける流路縮小部331cの位置と分岐管32cとが実施例1と相違する。
図3(d)及び図4、5に示すように、この実施例4の捕集装置3dは、実施例1と同様、第一の向きXから180°の位置に流路縮小部331aが配置されている縮小拡大管33aを備えている。また、捕集装置3dは、第一の向きX、つまり0°の向きに接続される出口管部321dを有する分岐管32dを備えている。すなわち、実施例4の捕集装置3dは、分岐管32dが実施例1と相違する。
図3(e)及び図4、5に示すように、この比較例1の捕集装置3eは、縮小拡大管33を備えていない。また、この捕集装置3eは、第一の向きXから90°の向きに接続される出口管部321aを有する分岐管32aを備えている。すなわち、比較例1の捕集装置3eは、縮小拡大管33を備えていない点が実施例1と相違する。
図3(f)及び図4、5に示すように、この比較例2の捕集装置3fは、第二ライン22の中心軸C上に流路縮小部331fが配置されている縮小拡大管33fを備えている。この縮小拡大管33fは、一対の同芯レデューサの縮径側が互いに接続されて形成されている。また、この捕集装置3fは、実施例1と同様、第一の向きXから90°の向きに接続される出口管部321aを有する分岐管32aとを備えている。すなわち、比較例2の捕集装置3fは、第二ライン22の中心軸Cに対して流路縮小部331fが偏芯していない点が実施例1と相違する。
図3(g)及び図4、5に示すように、この比較例3の捕集装置3gは、第一の向きX、つまり0°の位置に流路縮小部331gが配置されている縮小拡大管33gを備えている。また、この捕集装置3gは、実施例1と同様、第一の向きXから90°の向きに接続される出口管部321aを有する分岐管32aとを備えている。すなわち、比較例3の捕集装置3gは、縮小拡大管33gにおける流路縮小部331gの位置が実施例1と相違する。
図6に示すように、実施例1と比較例1、2について、粒子径における捕集率を比較した。縮小拡大管33を備えていない比較例1の捕集装置3eと、縮小拡大管33を備えている実施例1の捕集装置3a及び比較例2の捕集装置3fとを比較すると、縮小拡大管33を備えている実施例1及び比較例2の方が、高い捕集率を示した。さらに、実施例1と比較例2とを比較すると、縮小拡大管33の中でも、第二ライン22の中心軸C上に流路縮小部331fが配置されている比較例2よりも、第二ライン22の中心軸Cから偏芯した位置に流路縮小部331aが配置されている実施例1の方が、高い捕集率を示した。特に、粒子径の小さい時ほど捕集率の差が顕著に表れており、第二ライン22の中心軸Cから偏芯した位置に流路縮小部331aが配置されている実施例1が高い捕集率を発揮することが確認された。
また、縮小拡大管33の中でも、比較例3のように流路縮小部331(331g)の位置を曲管入口部311と反対側に配置するよりも、実施例1~4のように流路縮小部331(流路縮小部331a、流路縮小部331b、流路縮小部331c)を曲管入口部311側に配置する方が捕集率を向上できることがわかった。
さらに、実施例1~4のように分岐管32における出口管部321の接続位置が流路縮小部331と反対側の位置に接続される方が捕集率を向上できることがわかった。
具体的には、例えば、以上の実施形態及び実施例では、第二の向きZが鉛直下向きであるが、本発明において、第二の向きは第一の向き及び第三の向きよりも鉛直下方側を指向していればよい。また、以上の実施形態及び実施例では、第一の向き及び第三の向きがいずれも水平方向の向きであるが、本発明において、第一の向き及び第三の向きは水平方向成分を含む向きであればよい。
また、以上の実施形態では、流路縮小部331を形成する部品として偏芯レデューサ332を用いたが、これに限定されるものではない。例えば、オリフィス等の縮径する構造を持つ市販の公知の部品を用いてもよい。
Claims (5)
- 流体中に含まれている粒子を捕集する捕集装置において、
第一の向きへ流れる前記流体を、前記第一の向きよりも鉛直下方側を指向する第二の向きへと転向させる曲管と、
前記曲管の出口に接続され、前記第二の向きへ流れる前記流体の流路を縮小させた後に拡大させる縮小拡大管と、
前記縮小拡大管の出口に接続され、前記第二の向きへ流れる前記流体を、前記第二の向きと、前記第二の向きとは異なる向きである第三の向きと、に分岐させる分岐管と、
前記分岐管の前記第二の向き側の出口に接続され、前記流体中の前記粒子が集められる捕集部と、
を備え、
前記縮小拡大管における流路縮小部が前記縮小拡大管の入口開口の中心に対して偏芯しており、前記第二の向きに見たときに、前記入口開口の前記中心を基準にして、前記流路縮小部の偏芯位置が前記第一の向きから90°~270°の範囲内である、捕集装置。 - 流体中に含まれている粒子を捕集する捕集装置において、
第一の向きへ流れる前記流体を、前記第一の向きよりも鉛直下方側を指向する第二の向きへと転向させる曲管と、
前記曲管の出口に接続され、前記第二の向きへ流れる前記流体の流路を縮小させた後に拡大させる縮小拡大管と、
前記縮小拡大管の出口に接続され、前記第二の向きへ流れる前記流体を、前記第二の向きと、前記第二の向きとは異なる向きである第三の向きと、に分岐させる分岐管と、
前記分岐管の前記第二の向き側の出口に接続され、前記流体中の前記粒子が集められる捕集部と、
を備え、
前記縮小拡大管における流路縮小部は、前記第二の向きに見たときに、前記縮小拡大管の入口開口の中心から放射方向側で且つ前記入口開口の前記中心を基準にして前記曲管の入口側に偏芯している、捕集装置。 - 前記第三の向きは、前記第二の向きに見たときに、前記縮小拡大管の出口開口の中心を基準にして、前記流路縮小部の偏芯位置から90°~270°の範囲内である、請求項1又は2に記載の捕集装置。
- 前記分岐管の前記第三の向き側の出口は、前記第二の向きに見たときに、前記縮小拡大管の出口開口の中心を基準にして、前記流路縮小部の偏芯位置とは反対側である、請求項1又は2に記載の捕集装置。
- 圧縮機とタービンと燃焼器とを有するガスタービンと、
前記流体としてのガス燃料を前記燃焼器へ供給するガスラインと、
前記ガスライン中に配置される請求項1から4のいずれか一項に記載の捕集装置と、を備える、ガスタービンプラント。
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- 2013-05-23 KR KR1020157002133A patent/KR101723315B1/ko active IP Right Grant
- 2013-05-23 DE DE112013004446.3T patent/DE112013004446B4/de active Active
- 2013-05-23 CN CN201380039083.9A patent/CN104507549B/zh active Active
- 2013-05-23 US US14/419,728 patent/US9644540B2/en active Active
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JPS62136218A (ja) * | 1985-12-11 | 1987-06-19 | Mitsubishi Heavy Ind Ltd | 蒸気タ−ビン主蒸気中の異物を除去する装置 |
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Also Published As
Publication number | Publication date |
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US9644540B2 (en) | 2017-05-09 |
JP2014054598A (ja) | 2014-03-27 |
US20150211417A1 (en) | 2015-07-30 |
CN104507549A (zh) | 2015-04-08 |
CN104507549B (zh) | 2017-11-24 |
KR101723315B1 (ko) | 2017-04-04 |
DE112013004446B4 (de) | 2022-07-14 |
DE112013004446T5 (de) | 2015-06-11 |
KR20150034207A (ko) | 2015-04-02 |
JP6021540B2 (ja) | 2016-11-09 |
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