WO2014030717A1 - Élément de suppression des vibrations, procédé d'agencement d'élément de suppression des vibrations et générateur de vapeur - Google Patents

Élément de suppression des vibrations, procédé d'agencement d'élément de suppression des vibrations et générateur de vapeur Download PDF

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Publication number
WO2014030717A1
WO2014030717A1 PCT/JP2013/072464 JP2013072464W WO2014030717A1 WO 2014030717 A1 WO2014030717 A1 WO 2014030717A1 JP 2013072464 W JP2013072464 W JP 2013072464W WO 2014030717 A1 WO2014030717 A1 WO 2014030717A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
tube
fluid
vibration suppressing
hollow member
Prior art date
Application number
PCT/JP2013/072464
Other languages
English (en)
Japanese (ja)
Inventor
慎吾 西田
英之 森田
和生 廣田
健吾 嶋村
亮一 川上
Original Assignee
三菱重工業株式会社
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Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Publication of WO2014030717A1 publication Critical patent/WO2014030717A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • 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
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/205—Supporting and spacing arrangements for tubes of a tube bundle
    • F22B37/206—Anti-vibration supports for the bends of U-tube steam generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements

Definitions

  • the present invention relates to a vibration suppressing member that is provided in a gap between adjacent heat transfer tubes and suppresses vibration of the heat transfer tubes, a method of arranging the vibration suppression member, and a steam generator.
  • a steam generator having a plurality of heat transfer tubes therein is known (see, for example, Patent Document 1).
  • Each heat transfer tube provided in the steam generator is formed in a U shape, and a fluid such as a coolant circulates inside the heat transfer tube.
  • vibration fluid excitation vibration
  • a steadying metal fitting as a vibration suppressing member is inserted into a gap between a plurality of heat transfer tubes serving as arc portions in the steam generator.
  • the steady rest described in Patent Document 1 is a frame structure having a pantograph mechanism assembled with pins, and is inserted into gaps between a plurality of heat transfer tubes in a folded state. Then, the inserted anti-rest fitting is expanded by the pantograph mechanism, so that the width of the anti-rest fitting is slightly wider than the gap between the heat transfer tubes and is brought into contact with the heat transfer tube.
  • the gaps between the plurality of heat transfer tubes are not necessarily constant and vary due to various factors such as dimensional tolerances.
  • the steady rest described in Patent Document 1 uniformly expands the gap between the heat transfer tubes by the pantograph mechanism.
  • an object of the present invention is to provide a vibration suppressing member, a method for arranging the vibration suppressing member, and a steam generator that can be suitably brought into contact with the heat transfer tube to suppress the vibration of the heat transfer tube.
  • the vibration suppressing member of the present invention includes a hollow member disposed in a gap between adjacent heat transfer tubes, an inlet provided in the hollow member, and an inflow port for expanding the hollow member by flowing a fluid into the hollow member. It is characterized by providing.
  • the hollow member inserted in the gap between the heat transfer tubes expands when the fluid flows into the inside through the inlet.
  • the displacement of the contacted portion is restrained by the heat transfer tube. That is, the expanding hollow member is displaced as long as it does not contact the heat transfer tube. In other words, the expanding hollow member is displaced until it contacts the heat transfer tube.
  • the displacement of the hollow member may be elastic deformation or plastic deformation.
  • the hollow member is preferably smaller than the gap before the fluid flows in and larger than the gap after the fluid flows in.
  • the thickness of the hollow member in the predetermined part is thinner than the reference thickness as a reference.
  • a hollow member can be expanded aiming at a heat exchanger tube by making a predetermined part of a hollow member into a part which wants to contact a heat exchanger tube.
  • the inflow port is preferably connected to a communication pipe that communicates the insides of the plurality of hollow members.
  • the inside of the plurality of hollow members can be communicated with each other by connecting the inlet provided in the hollow member to the communication pipe. For this reason, the internal pressure of a some hollow member can be made uniform. Moreover, since the internal pressure of the plurality of hollow members becomes the same pressure, the internal pressure can be managed uniformly, so that pressure management can be facilitated.
  • the vibration suppressing member disposing method of the present invention is a vibration suppressing member disposing method in which the vibration suppressing member is disposed in a gap of the heat transfer tube, and the hollow member of the vibration suppressing member before the fluid flows in the gap An inflating step for inflating the hollow member by injecting a fluid into the hollow member via the inflow port, and a sealing step for sealing the inflow port in the expanded state And.
  • the hollow member inserted in the gap between the heat transfer tubes in the arrangement process expands when the fluid flows into the hollow member through the inlet in the expansion process.
  • the expanding hollow member can suitably come into contact with the heat transfer tube while being elastically deformed by the internal pressure.
  • it can be set as the state which pressed the hollow member on the heat exchanger tube by sealing the fluid inside the hollow member of an expansion
  • swelling hollow member can be made to contact suitably for a heat exchanger tube, and the vibration of a heat exchanger tube can be suppressed.
  • the pressure inside the hollow member can be made higher than the pressure outside the hollow member by sealing the inlet of the hollow member, the hollow member is always pressed against the heat transfer tube. Can do.
  • Another method of disposing the vibration suppressing member according to the present invention is a disposing method of the vibration suppressing member in which the vibration suppressing member is disposed in the gap of the heat transfer tube, and the hollow member of the vibration suppressing member before the fluid flows in.
  • a disposing step of disposing the fluid in the gap, an inflating step of inflating the hollow member by allowing fluid to flow into the hollow member via the inflow port, and a fluid outflowing step of discharging the fluid from the inside of the inflated hollow member It is characterized by providing.
  • the hollow member inserted in the gap between the heat transfer tubes in the arrangement process expands when the fluid flows into the hollow member through the inlet in the expansion process.
  • swells can contact a heat exchanger tube suitably, deform
  • the internal pressure can be released by causing the fluid inside the deformed hollow member to flow out.
  • transformation hollow member can be made to contact suitably for a heat exchanger tube, and the vibration of a heat exchanger tube can be suppressed.
  • the pressure inside a hollow member can be made the same pressure as the pressure outside the hollow member by opening the inside of the hollow member, the state inside the hollow member can be stabilized. .
  • the steam generator of the present invention is a rectangular tube having a space inside, and includes an inlet at one end of the rectangular tube, and an opening at one end of the rectangular tube, It has a vibration suppression member formed in a letter shape.
  • the square tube body is preferably brought into contact with the heat transfer tube by injecting the fluid into the rectangular tube body inserted into the gap between the heat transfer tubes via the inlet and expanding the square tube body.
  • the vibration of the heat transfer tube can be suitably suppressed.
  • FIG. 1 is a schematic side sectional view of a steam generator in which the tube expansion jig of Example 1 is used.
  • FIG. 2 is a schematic perspective view of a heat transfer tube group provided in the steam generator.
  • FIG. 3 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the first embodiment.
  • FIG. 4 is a schematic diagram illustrating one end of the vibration suppressing member of the first embodiment.
  • FIG. 5 is a flowchart regarding a method of arranging the vibration suppressing member.
  • FIG. 6 is a flowchart relating to another arrangement method of the vibration suppressing member.
  • FIG. 7 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the second embodiment.
  • FIG. 8 is a cross-sectional view illustrating a predetermined portion of the vibration suppressing member of the second embodiment.
  • FIG. 9 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the third embodiment.
  • FIG. 1 is a schematic side sectional view of a steam generator in which the tube expansion jig of Example 1 is used.
  • a steam generator 1 used in a pressurized water reactor (PWR).
  • a primary coolant for example, light water
  • the primary coolant that has become high temperature and high pressure is subjected to heat exchange with the secondary coolant, thereby evaporating the secondary coolant to generate steam, and primary cooling that has become high temperature and pressure.
  • the material is cooling.
  • the steam generator 1 has a hollow cylindrical shape extending in the vertical direction and sealed.
  • the steam generator 1 has a trunk portion 2 whose lower half is slightly smaller in diameter than the upper half.
  • the trunk portion 2 is provided with a tube group outer cylinder 3 having a cylindrical shape disposed at a predetermined distance from the inner wall surface of the trunk portion 2 in the lower half portion thereof.
  • the lower end portion of the tube group outer tube 3 extends to the vicinity of the tube plate 4 disposed below in the lower half of the body portion 2.
  • a heat transfer tube group 51 is provided in the tube group outer tube 3.
  • the heat transfer tube group 51 includes a plurality of heat transfer tubes 5 having an inverted U shape.
  • Each of the heat transfer tubes 5 is arranged so that the U-shaped arc portion is convex upward, and both end portions on the lower side are supported by the tube plate 4, and the intermediate portion includes a plurality of tube support plates 6. And is supported by the tube group outer tube 3. A large number of through holes (not shown) are formed in the tube support plate 6, and the heat transfer tubes 5 are inserted into the through holes.
  • the body 2 is provided with a water chamber 7 at its lower end.
  • the water chamber 7 is divided into an entrance chamber 71 and an exit chamber 72 by a partition wall 8.
  • the entrance chamber 71 communicates with one end of each heat transfer tube 5, and the exit chamber 72 communicates with the other end of each heat transfer tube 5.
  • the entrance chamber 71 is formed with an inlet nozzle 74 that communicates with the outside of the body portion 2, and the exit chamber 72 is formed with an exit nozzle 75 that communicates with the exterior of the body portion 2.
  • the inlet nozzle 74 is connected to a cooling water pipe (not shown) through which a primary coolant is sent from the pressurized water reactor, and the outlet nozzle 75 passes the primary coolant after heat exchange to the pressurized water reactor.
  • the cooling water piping (not shown) to send is connected.
  • the steam / water separator 9 that separates the secondary coolant after heat exchange into steam (gas phase) and hot water (liquid phase), and the moisture content of the separated steam
  • a moisture separator 10 is provided to remove the water and bring it to a state close to dry steam.
  • a water supply pipe 11 for supplying water of the secondary coolant from the outside into the body 2 is inserted.
  • drum 2 has the vapor
  • the body part 2 has a tube plate in which a secondary coolant supplied from the water supply pipe 11 into the body part 2 flows down between the body part 2 and the tube group outer cylinder 3 in the lower half part.
  • a water supply path 13 that is folded back at 4 and raised along the heat transfer tube group 51 is formed.
  • the steam outlet 12 is connected to a cooling water pipe (not shown) for sending steam to the turbine, and the water supply pipe 11 has two steams used in the turbine cooled by a condenser (not shown).
  • a cooling water pipe (not shown) for supplying the next coolant is connected.
  • the primary coolant heated in the pressurized water reactor is sent to the entrance chamber 71 and circulates through the numerous heat transfer tubes 5 to reach the exit chamber 72.
  • the secondary coolant cooled by the condenser is sent to the water supply pipe 11 and rises along the heat transfer pipe group 51 through the water supply path 13 in the trunk portion 2.
  • heat exchange is performed between the high-temperature and high-pressure primary coolant and the secondary coolant in the body portion 2.
  • the cooled primary coolant is returned from the exit chamber 72 to the pressurized water reactor.
  • the secondary coolant that has exchanged heat with the high-temperature and high-pressure primary coolant moves up in the body 2 and is separated into steam and hot water by the steam separator 9. The separated steam is sent to the turbine after moisture is removed by the moisture separator 10.
  • FIG. 2 is a schematic perspective view of a heat transfer tube group provided in the steam generator.
  • the upper end portion of the heat transfer tube group 51 is formed in a hemispherical shape by arranging arc portions of a plurality of heat transfer tubes 5 having an inverted U shape. That is, as shown in FIG. 2, each heat transfer tube 5 is bent with a predetermined curvature radius in the plane.
  • the plurality of heat transfer tubes 5 are provided so that the radius of curvature increases in the radial direction of the curvature radius in each plane, and are arranged side by side so that the axial directions are parallel to each other, thereby forming the heat transfer tube layer 5A. .
  • the heat transfer tube layers 5A are arranged in parallel with a predetermined gap in an out-of-plane direction perpendicular to the in-plane direction.
  • the radius of curvature of each heat transfer tube 5 on the outermost side in the radial direction of the radius of curvature in the plane decreases toward the outer side in the out-of-plane direction.
  • the plurality of vibration suppressing members 14 are respectively inserted between the plurality of heat transfer tube layers 5A arranged in parallel.
  • Each vibration suppression member 14 is formed to be bent in a V shape, and is arranged so that the bent portion is located on the center side (inside) in the radial direction of the radius of curvature of the heat transfer tube 5. Is arranged so as to be located outside in the radial direction. Both end portions of the vibration suppressing member 14 protrude outward from the heat transfer tube 5 located on the outermost side in the radial direction of the radius of curvature.
  • the plurality of vibration suppression members 14 include a vibration suppression member 14 having a large V shape and a vibration suppression member 14 having a small V shape. And the vibration suppression member 14 with a small V shape is arranged inside the vibration suppression member 14 with a large V shape to form a pair. For example, three pairs of the vibration suppressing members 14 forming a pair are arranged in a gap between two heat transfer tube layers 5A adjacent (stacked) in the out-of-plane direction. The three pairs of vibration suppressing members 14 are provided along the circumferential direction of the radius of curvature.
  • the plurality of vibration suppression members 14 are arranged so that the end portions of the plurality of vibration suppression members 14 extend in the out-of-plane direction of the heat transfer tube layer 5 ⁇ / b> A along the hemispherical arc of the heat transfer tube group 51. Are arranged in a row. Further, the end portions of the vibration suppressing members 14 in a row are arranged in a plurality of rows at predetermined intervals along the in-plane direction of the heat transfer tube layer 5A along the hemispherical arc of the heat transfer tube group 51. That is, the ends of the plurality of vibration suppressing members 14 are arranged in a lattice shape.
  • a joining member 15 is provided at each end of each vibration suppressing member 14.
  • the joining member 15 is joined to a holding member 16 described later.
  • the joining member 15 is made of a metal material such as stainless steel, for example.
  • the holding member 16 is a rod body formed in an arc shape along the hemispherical outer periphery of the heat transfer tube group 51 as shown in FIG.
  • the holding member 16 is arranged so as to connect the end portions of the vibration suppressing members 14 arranged in a line along the hemispherical arc of the heat transfer tube group 51.
  • the joining member 15 provided in the edge part of each vibration suppression member 14 is joined to this holding member 16 by welding.
  • V-shaped thing was used for the vibration suppression member 14, the thing of a rectangular parallelepiped shape (straight shape) is used, or the thing of a V shape and a rectangular parallelepiped shape are used together. There is no particular limitation.
  • FIG. 3 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the first embodiment.
  • the vibration suppressing member 14 includes a cylindrical tube (hollow member) 31 having a space inside, an inlet 32 provided at one end of the cylindrical tube 31, and one of the cylindrical tubes 31. And an opening 33 provided at the end.
  • a fluid supply device 35 is connected to the inflow port 32 via a supply pipe 34.
  • the cylindrical tube 31 is formed by press forming a straight tube into a V shape. A fluid can flow into the cylindrical tube 31. The cylindrical tube 31 expands when a fluid flows into the cylindrical tube 31. At this time, the cylindrical tube 31 is elastically deformed by expanding. The cylindrical tube 31 is formed smaller than the gap between the adjacent heat transfer tube layers 5A before expansion. That is, the outer diameter of the cylindrical tube 31 is smaller than the gap between the adjacent heat transfer tube layers 5A before expansion. On the other hand, the cylindrical tube 31 becomes larger than the gap between the adjacent heat transfer tube layers 5A after expansion.
  • Example 1 demonstrates the case where the cylindrical tube 31 elastically deforms, the structure which plastically deforms may be sufficient. Further, since the vibration suppressing member disposition method described later differs between the case of elastic deformation and the case of plastic deformation, each case will be described.
  • a closing plug 37 is provided at the other end of the cylindrical tube 31.
  • the closing plug 37 hermetically closes the other opening of the cylindrical tube 31.
  • the closing plug 37 may have any shape as long as it can be closed.
  • the closing plug 37 may be formed as a concave cap.
  • the closing plug 37 is press-fitted into the other opening of the cylindrical tube 31 to close the other opening of the cylindrical tube 31.
  • occlusion plug 37 may be arrange
  • tube 31 may be welded.
  • FIG. 4 is a schematic diagram showing one end of the vibration suppressing member of the first embodiment.
  • an inlet 32 and an opening 33 are provided at one end of the cylindrical tube 31.
  • the inflow port 32 is provided so as to protrude from the end of the cylindrical tube 31 in the axial direction of the cylindrical tube 31.
  • the inflow port 32 is provided with an on-off valve 41, and the on-off valve 41 can open and close the inflow port 32.
  • the on-off valve 41 is opened when a fluid is allowed to flow into the cylindrical tube 31.
  • the on-off valve 41 is closed when suppressing the outflow of fluid from the inside of the cylindrical tube 31.
  • One end of a supply pipe 34 is connected to the inflow port 32. At this time, the inlet 32 and the supply pipe 34 may be connected using a joint joint or the like.
  • the opening 33 is provided so as to protrude from the end of the cylindrical tube 31 in the axial direction of the cylindrical tube 31 in the same manner as the inflow port 32.
  • the opening 33 is provided with an opening / closing valve 42, and the opening / closing valve 42 can open and close the opening 33.
  • the on-off valve 42 is opened when the fluid flows into the cylindrical tube 31 and the air inside flows out.
  • the on-off valve 42 is closed when air flows out from the inside of the cylindrical tube 31 and the outflow of fluid from the inside of the cylindrical tube 31 is suppressed.
  • the fluid supply device 35 supplies a fluid toward the inlet 32 of the cylindrical tube 31.
  • a fluid For example, water or air is used as the fluid.
  • the vibration suppression member 14 is provided around the heat transfer tube 5, it is preferable to use water as a fluid in consideration of expansion during heating. Further, as the fluid supply device 35, it is possible to easily supply the fluid to the vibration suppressing member 14 by using a portable handling pump.
  • FIG. 5 is a flowchart regarding a method of arranging the vibration suppressing member.
  • the arrangement method of the vibration suppressing member 14 shown in FIG. 5 is an arrangement method when the cylindrical tube 31 is elastically deformed.
  • the vibration suppressing member 14 is inserted into the gap between the adjacent heat transfer tube layers 5A and disposed at a predetermined position (step S11: arrangement step).
  • the supply pipe 34 is connected to the inlet 32 of the vibration suppressing member 14 so that the fluid can be supplied from the fluid supply device 35 toward the vibration suppressing member 14.
  • the opening / closing valve 41 and the opening / closing valve 42 are opened to open the inlet 32 and the opening 33, and then the fluid is supplied from the fluid supply device 35.
  • step S12 expansion step
  • the cylindrical tube 31 can be suitably brought into contact with the heat transfer tubes 5 by expanding.
  • the on-off valve 41 is closed and the inflow port 32 is closed (step S13: sealing process).
  • the vibration suppressing member 14 can be brought into contact with the heat transfer tube 5.
  • positioning of the vibration suppression member 14 is completed by stopping supply of the fluid from the fluid supply apparatus 35.
  • FIG. 6 is a flowchart relating to another arrangement method of the vibration suppressing member.
  • the arrangement method of the vibration suppressing member 14 shown in FIG. 6 is an arrangement method when the cylindrical tube 31 is plastically deformed.
  • the description overlapping with the method of arranging the vibration suppressing member in FIG. 5 is omitted.
  • step S11 of FIG. 5 the vibration suppressing member 14 is inserted into the gap between the adjacent heat transfer tube layers 5A and disposed at a predetermined position (step S21: arrangement step).
  • step S12 of FIG. 5 the inside of the cylindrical tube 31 is filled with fluid, and then the on-off valve 42 is closed, the opening 33 is closed, and the cylindrical tube 31 is expanded (step S22: expansion). Process). At this time, the cylindrical tube 31 expands while being plastically deformed. After the cylindrical tube 31 is expanded, the supply of the fluid from the fluid supply device 35 is stopped, and the opening / closing valve 42 is opened to open the opening 33 (step S23: opening (fluid outflow) step).
  • the vibration suppressing member 14 can be brought into contact with the heat transfer tube 5. The arrangement of the vibration suppressing member 14 is thus completed.
  • the cylindrical tube 31 inserted in the gap between the heat transfer tubes 5 expands when fluid flows into the inside thereof via the inflow port 32. For this reason, even if it is a case where the clearance gap between the heat exchanger tubes 5 has dispersion
  • the cylindrical tube 31 is smaller than the gap before the fluid flows in and becomes larger than the gap after the fluid flows in. For this reason, since the cylindrical pipe
  • tube 31 can be reliably made to contact with the heat exchanger tube 5, the vibration of the heat exchanger tube 5 can be suppressed more suitably.
  • the expanding cylindrical tube 31 contacts the heat transfer tube 5 while being elastically deformed by the internal pressure. And in sealing process S13, it can be set as the state which pressed the cylindrical tube 31 against the heat exchanger tube 5 by sealing the fluid inside the cylindrical tube 31 of an expanded state. For this reason, the cylindrical tube 31 which expand
  • the expanding cylindrical tube 31 comes into contact with the heat transfer tube 5 while being plastically deformed by the internal pressure.
  • the cylindrical tube 31 can be pressed against the heat transfer tube 5 by releasing the pressure inside the expanded cylindrical tube 31.
  • the plastically deformed cylindrical tube 31 can be suitably brought into contact with the heat transfer tube 5 to suppress vibration of the heat transfer tube 5.
  • the pressure inside the cylindrical tube 31 can be made the same as the pressure outside the cylindrical tube 31 by opening the inside of the cylindrical tube 31, the state inside the cylindrical tube 31 is made stable. can do.
  • FIG. 7 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the second embodiment.
  • FIG. 8 is a cross-sectional view illustrating a predetermined portion of the vibration suppressing member of the second embodiment.
  • the thickness at a predetermined portion is thinner than the reference thickness that is a reference.
  • the vibration suppressing member 80 of Example 2 will be described.
  • the vibration suppressing member 80 includes a rectangular tube body (hollow member) 81 having a space therein, an inflow port 82 provided at one end of the rectangular tube body 81, and An opening (not shown) provided at one end of the rectangular tube 81 is provided.
  • the fluid supply device 35 is connected to the inflow port 82 via the supply pipe 34.
  • the rectangular cylinder 81 is a cylinder having a quadrangular cross section having four sides and is formed in a V shape.
  • the square cylinder 81 is configured by forming a groove by abutting both ends of a pair of concave members 81a having a concave cross section, and joining the grooves by welding or the like.
  • a fluid can flow into the rectangular cylinder 81.
  • the rectangular cylinder 81 expands when fluid flows into the rectangular cylinder 81.
  • the rectangular cylinder 81 may be elastically deformed by expanding or may be plastically deformed.
  • the rectangular tube body 81 configured in this manner, of the four side portions, a pair of opposed side portions are in contact with the heat transfer tube 5, and the other pair of opposed side portions are not in contact with the heat transfer tube 5. .
  • the rectangular tube body 81 before expansion is formed smaller than the gap between the adjacent heat transfer tube layers 5 ⁇ / b> A in the direction connecting the pair of opposing side portions that contact the heat transfer tube 5.
  • the expanded rectangular tubular body 81 is larger than the gap between the adjacent heat transfer tube layers 5 ⁇ / b> A in the direction connecting the pair of opposing side portions that contact the heat transfer tube 5.
  • the rectangular tubular body 81 has a thin plate thickness at a predetermined portion 85 at a side portion in contact with the heat transfer tube 5.
  • the predetermined part 85 is, for example, a part that contacts the heat transfer tube 5. That is, the rectangular cylinder 81 has a reference thickness based on the plate thickness, and the portion 85 is thinner than the reference thickness. In other words, the thickness at the portion 85 is thinner than the thickness at portions other than the portion 85.
  • the outer surface of the part 85 is the same as the outer surface of the part other than the part 85, while the inner surface of the part 85 is different from the inner surface of the part other than the part 85.
  • Example 2 the concave groove portion was formed on the inner surface side of the rectangular tube body 81 to reduce the thickness of the portion 85.
  • the present invention is not limited to this configuration, and the concave groove portion is formed on the outer surface side of the rectangular tube body 81. It may be formed to reduce the thickness of the portion 85.
  • the groove part is previously formed in the concave member 81a by processing.
  • the other end of the rectangular tube 81 is airtightly closed, and an inflow port 82 and an open port are provided at one end thereof.
  • the inflow port 82 and the opening are the same as those in the first embodiment, the description thereof is omitted.
  • the rectangular cylinder 81 expands while being deformed. At this time, since the portion 85 of the rectangular tubular body 81 is thinner than the other portions, the portion 85 is more easily expanded than the other portions.
  • the predetermined portion 85 of the rectangular tube 81 can be thinned, the predetermined portion 85 can be easily expanded.
  • the part 85 is made into the part which contacts the heat exchanger tube 5, and the square cylinder 81 can be expanded focusing on the heat exchanger tube 5.
  • FIG. 9 is a schematic diagram illustrating a schematic configuration of the vibration suppressing member of the third embodiment.
  • a plurality of vibration suppression members 90 according to the third embodiment are connected to the communication pipe 95, and a fluid is supplied to the plurality of vibration suppression members 90 via the communication pipe 95.
  • the vibration suppressing member 90 of Example 3 will be described.
  • a plurality of vibration suppressing members 90 of the third embodiment are connected to the communication pipe 95.
  • the communication pipe 95 and the fluid supply device 35 are connected to one vibration suppression member 90a, and the communication pipes are connected to the other vibration suppression members 90b. 95 is connected.
  • the vibration suppression member 90a includes a cylindrical tube (hollow member) 91a having a space inside, an inlet 92a provided at one end of the cylindrical tube 91a, and an outlet 93 provided at the other end. I have.
  • the fluid supply device 35 is connected to the inflow port 92 a through the supply pipe 34, and the communication pipe 95 is connected to the outflow port 93 through the connection pipe 94. Since the cylindrical tube 91a and the inflow port 92a have the same configuration as in the first embodiment, description thereof is omitted.
  • the opening 33 of the first embodiment may or may not be provided.
  • the outflow port 93 of the vibration suppressing member 90a causes the fluid that has flowed into the cylindrical tube 91a of the vibration suppressing member 90a to flow out.
  • a connection pipe 94 is connected to the outflow port 93, and the fluid that has flowed out of the outflow port 93 flows into the communication pipe 95 through the connection pipe 94.
  • the vibration suppressing member 90b includes a cylindrical tube (hollow member) 91b having a space inside, an inflow port 92b provided at the other end of the cylindrical tube 91b, and a block provided at one end of the cylindrical tube 91b. And a plug 97.
  • a connection pipe 94 is connected to the inflow port 92b, and the fluid flowing out from the communication pipe 95 via the connection pipe 94 flows into the cylindrical pipe 91b. Since the cylindrical tube 91b, the inlet 92b, and the closing plug 97 have the same configuration as that of the first embodiment, description thereof is omitted.
  • the fluid is supplied from the fluid supply device 35 into the vibration suppression member 90a to which the fluid supply device 35 is connected among the plurality of vibration suppression members 90 configured as described above. Then, the inside of the vibration suppression member 90 a is filled with the fluid, and thereafter, the fluid inside the vibration suppression member 90 a flows out from the outflow port 93. The fluid flowing out from the outlet 93 passes through the connection pipe 94 and flows into the communication pipe 95. The fluid that has flowed into the communication pipe 95 flows into the vibration suppression member 90b to which the fluid supply device 35 is not connected via the connection pipe 94. Then, the inside of the vibration suppressing member 90b is filled with the fluid.
  • the cylindrical tube 91a and the cylindrical tube 91b expand while deforming. At this time, since the inside of the cylindrical tube 91a and the cylindrical tube 91b communicate with each other through the communication tube 95, the internal pressure of the fluid becomes uniform.
  • the inside of the cylindrical tube 91a and the cylindrical tube 91b can be communicated with each other by connecting the inflow port 92b provided in the cylindrical tube 91b to the communication tube 95. .
  • the internal pressures of the plurality of cylindrical tubes 91a and cylindrical tubes 91b can be made uniform.
  • the internal pressures of the plurality of cylindrical tubes 91a and the cylindrical tubes 91b are the same, the internal pressure can be managed uniformly, so that the pressure management can be facilitated.
  • the fluid supply device 35 is connected to the vibration suppressing member 90a.
  • the vibration suppression member 90 may be a plurality of vibration suppression members 90 and the fluid supply device 35 may be connected to the communication pipe 95.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention porte sur un procédé d'agencement d'un élément de suppression des vibrations (14), lequel procédé met en œuvre la disposition, dans un espace entre des tubes d'échangeur de chaleur adjacents, d'un élément de suppression des vibrations (14) comportant un tube cylindrique (31) et une entrée (32) qui est située dans le tube cylindrique (31) et qui sert à provoquer une expansion du tube cylindrique (31) par le fait de permettre à un fluide de s'écouler dans le tube cylindrique (31), et comprend une étape de disposition pour la disposition, dans l'espace, du tube cylindrique (31) de l'élément de suppression des vibrations (14) avant que le fluide n'entre, une étape d'expansion pour provoquer une expansion du tube cylindrique (31) par le fait de permettre au fluide de s'écouler à travers l'entrée (32) dans le tube cylindrique (31), et une étape de scellement hermétique pour sceller hermétiquement l'entrée (32) dans un état dans lequel le tube cylindrique (31) a subi une expansion.
PCT/JP2013/072464 2012-08-24 2013-08-22 Élément de suppression des vibrations, procédé d'agencement d'élément de suppression des vibrations et générateur de vapeur WO2014030717A1 (fr)

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JP2012-185669 2012-08-24
JP2012185669A JP2014043970A (ja) 2012-08-24 2012-08-24 振動抑制部材及び振動抑制部材の配設方法

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122495A (ja) * 1984-11-13 1986-06-10 ウエスチングハウス　エレクトリック　コ−ポレ−ション 防振バーとその配列・取付方法
JPS61291801A (ja) * 1985-06-18 1986-12-22 ウエスチングハウス　エレクトリック　コ−ポレ−ション 原子力発電プラント用蒸気発生器
JP2012145284A (ja) * 2011-01-13 2012-08-02 Mitsubishi Heavy Ind Ltd 蒸気発生器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61122495A (ja) * 1984-11-13 1986-06-10 ウエスチングハウス　エレクトリック　コ−ポレ−ション 防振バーとその配列・取付方法
JPS61291801A (ja) * 1985-06-18 1986-12-22 ウエスチングハウス　エレクトリック　コ−ポレ−ション 原子力発電プラント用蒸気発生器
JP2012145284A (ja) * 2011-01-13 2012-08-02 Mitsubishi Heavy Ind Ltd 蒸気発生器

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