WO2014038142A1 - 空冷式熱交換装置 - Google Patents
空冷式熱交換装置 Download PDFInfo
- Publication number
- WO2014038142A1 WO2014038142A1 PCT/JP2013/004861 JP2013004861W WO2014038142A1 WO 2014038142 A1 WO2014038142 A1 WO 2014038142A1 JP 2013004861 W JP2013004861 W JP 2013004861W WO 2014038142 A1 WO2014038142 A1 WO 2014038142A1
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- WO
- WIPO (PCT)
- Prior art keywords
- header
- upstream
- air
- main pipe
- heat exchange
- Prior art date
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 111
- 238000001816 cooling Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000002783 friction material Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 description 20
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F28F9/02—Header boxes; End plates
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
- F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D2001/0253—Particular components
- F28D2001/026—Cores
- F28D2001/028—Cores with empty spaces or with additional elements integrated into the cores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/14—Safety or protection arrangements; Arrangements for preventing malfunction for preventing damage by freezing, e.g. for accommodating volume expansion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
-
- 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
-
- 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
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
Definitions
- the present invention relates to an air-cooled heat exchange device, and more particularly to a device used in a chemical plant, an LNG plant, a power plant or the like.
- an air-cooled heat exchange device may be used to cool a medium (fluid) heated by heat exchange, compression, distillation, reaction, or the like (for example, Patent Document 1).
- An air-cooled heat exchange device according to Patent Document 1 includes a rectangular steel frame, a heat exchanger including a finned tube-type heat transfer tube provided so as to cover an upper opening of the frame, and a heat transfer tube.
- a fan device that supplies air to the outer surface, an upstream manifold that is provided at the upstream end of the heat exchanger and supplies high-temperature fluid to the heat exchanger, and a downstream header that returns the fluid that has passed through the heat exchanger to the high-temperature equipment And have.
- the upstream manifold has a main pipe as a header portion on the upstream side and a plurality of branch pipes branched from the main pipe, and is connected to a plurality of heat exchangers at the downstream ends of the branch pipes.
- the temperature of the main pipe rises due to the flow of a high-temperature medium inside, and the thermal expansion of the main pipe occurs. Displaces in the extending direction.
- the plurality of heat exchangers are individually expanded by the circulation of the medium, they are separated from each other. Become. Therefore, the relative position between the downstream end and the upstream end of the branch pipe changes, and stress is generated in the branch pipe, in particular, the connection between the branch pipe and the main pipe and the connection between the branch pipe and the heat exchanger, and the branch pipe is damaged. There is a risk of doing.
- a plurality of bent portions (elbow portions) 204 bent at substantially right angles are formed in the middle portion of the branch pipe 203 that connects the main pipe 201 and the heat exchanger 202, and the branch pipe 203 is formed during thermal expansion. May be bent at the bent portion 204 (the bending angle (opening angle) changes), thereby minimizing the stress of the branch pipe 203.
- the elbow portion is formed in the branch pipe, there is a problem that the pipe line of the branch pipe becomes long, the structure becomes complicated, the material cost and the manufacturing man-hour increase, and the manufacturing cost increases.
- the elbow part is damaged by repeating the deformation at the elbow part.
- the present invention has been made in view of the above problems, and in an air-cooled heat exchanger, it is possible to relieve stress generated during thermal expansion in a pipe connecting the upstream manifold and the heat exchanger with a simple configuration. Let it be an issue.
- an air-cooled heat exchange device (1) comprising a gantry (3), an upstream main pipe (16) extending in a first direction, and the upstream main pipe.
- An upstream having an upstream collecting pipe (17) communicating with the upstream main pipe for supplying fluid and a plurality of branch pipes (18) extending from different points of the upstream main pipe along the first direction
- a side manifold (6) an inlet header (31) connected to each of the branch pipes and displaceably mounted on the mount, a heat transfer pipe bundle (35) connected to the inlet header at one end,
- a heat exchanger (4) having an outlet header (33) connected to the other end of the heat transfer tube bundle, and connecting members (41, 75) for connecting at least two of the inlet headers to each other.
- the coefficient of thermal expansion of the connecting member is the same as that of the upstream main pipe. It is achieved by providing air-cooled heat exchanger, characterized by having.
- the temperature of the upstream manifold is increased by the medium passing through the interior, and the connecting member and the inlet header are thermally in the same environment as the upstream manifold (particularly, the upstream main pipe). Similarly, the temperature is raised. Therefore, these members perform the same thermal expansion. As a result, the relative position change between the upstream end and the downstream end of the branch pipe is reduced. Therefore, it is possible to reduce damage to the branch pipe without introducing a deformable structure (for example, an elbow portion) into the branch pipe itself, and the manufacturing cost can be reduced by simplifying the structure of the branch pipe.
- a deformable structure for example, an elbow portion
- the inlet header may be attached so as to be displaceable by allowing it to slide on the frame via a low friction material or an easily deformable material.
- the connecting member In order to place the connecting member in the same thermal state as the upstream manifold, it is preferable to cover at least a part of the connecting member with a heat insulating material.
- the inlet header and the outlet header are arranged one above the other, and the heat transfer tube bundle has a first heat transfer in which the inlet header extends in a second direction substantially perpendicular to the first direction.
- a heat tube bundle (35) and a second heat transfer tube bundle (36) extending in parallel with the first heat transfer tube bundle from the distal end of the first heat transfer tube bundle toward the outlet header.
- a downstream manifold (7) comprising a plurality of branch pipes (53) extending from different points of the downstream main pipe along the first direction and communicating with the outlet header of the corresponding heat exchanger.
- the inlet header and the outlet header of each heat exchanger cooperate to form a header unit (37), and the header unit can be slid by the frame, etc. It should be supported so that it can be displaced.
- each of the inlet header and the outlet header of the heat exchanger is supported by the gantry so as to be individually displaceable, so that the inlet header and the outlet header are respectively an upstream manifold and a downstream manifold. It can be displaced so as to correspond to the thermal expansion.
- the intermediate part (19) of the upstream main pipe is coupled to a fixed support member, and the upstream collecting pipe is connected to the intermediate part of the upstream main pipe.
- the inlet header of the heat exchanger adjacent to the support member may be coupled to the support member by a connecting member.
- the row of the inlet header and the connecting member can be thermally expanded in the same manner as the upstream main pipe of the upstream manifold.
- FIG. 1 Side view showing an air-cooled heat exchange device according to the first embodiment.
- the side view which shows 1 unit (1 bay) of the air-cooling type heat exchange apparatus which concerns on 1st Embodiment.
- Sectional drawing which shows the heat exchanger which concerns on 1st Embodiment.
- Explanatory drawing which shows the time of (A) normal time of the air-cooling type heat exchange apparatus which concerns on 1st Embodiment, and (B) thermal expansion.
- Sectional drawing which shows the heat exchanger which concerns on 2nd Embodiment.
- Explanatory drawing which shows the time of (A) normal time of the air-cooling type heat exchange apparatus which concerns on 2nd Embodiment, and (B) thermal expansion.
- the air-cooled heat exchange device 1 is used to cool a refrigerant or the like used in various plants, for example, to cool a refrigerant used in a natural gas liquefaction process.
- the refrigerant may be a known refrigerant such as water, ammonia, ethylene refrigerant, or propylene refrigerant.
- the air-cooled heat exchange device 1 As shown in FIGS. 1 and 2, the air-cooled heat exchange device 1 according to the first embodiment is mounted on a gantry 3 erected on a base surface (ground or floor surface) 2, and the gantry 3. A plurality of heat exchangers 4 and a fan device 5, an upstream manifold 6 that supplies refrigerant to the heat exchanger 4, and a downstream manifold 7 that discharges the refrigerant that has passed through the heat exchanger 4. .
- the gantry 3 is a metal skeleton body, and includes a plurality of pillars 11 and a plurality of beams 12 spanned horizontally between the pillars 11.
- the beam 12 forms a rectangular frame at the top of the column 11 and forms a heat exchanger support 13 for supporting the heat exchanger 4. Further, the beam 12 forms a rectangular frame below the heat exchanger support 13 and forms a fan support 14 for supporting the fan device 5.
- the upper surfaces of the heat exchanger support 13 and the fan support 14 are formed in a smooth horizontal plane.
- the upstream manifold 6 extends linearly in the horizontal direction, and is connected to the upstream main pipe 16, one upstream collecting pipe 17 connected to an intermediate portion in the longitudinal direction of the upstream main pipe 16, and the upstream main pipe 16.
- the plurality of upstream branch pipes 18 are arranged at intervals in the longitudinal direction of the upstream main pipe 16.
- the refrigerant is supplied from the upstream collecting pipe 17 to the upstream main pipe 16 and is distributed from the upstream main pipe 16 to each upstream branch pipe 18.
- the upstream main pipe 16 has a sufficiently large inner diameter with respect to the upstream branch pipe 18, and the pressure of the refrigerant supplied to each upstream branch pipe 18 is substantially uniform.
- the upstream manifold 6 includes a coupling member 22 (for example, a U-bolt) on a columnar support 21 that stands upright with respect to the base surface 2 at a connecting portion 19 between the upstream collecting pipe 17 and the upstream main pipe 16. And clamps).
- the support body 21 may be formed integrally with the gantry 3.
- a straight line extending through the connecting portion 19 between the upstream collecting pipe 17 and the upstream main pipe 16 and extending vertically is defined as a reference line (center line) A of the air-cooling heat exchange device 1, the upstream manifold 6 is thermally expanded.
- the upstream main pipe 16 mainly expands outward in the extending direction with the reference line A as the center of expansion.
- the connecting portion 19 is substantially fixed and is not displaced.
- the upstream manifold 6 may be supported by the support 21 via a deformable member (for example, a spring) so as not to inhibit thermal expansion in each part of the upstream main pipe 16.
- each heat exchanger 4 includes a first header 31, an intermediate header 32, an outlet header 33, and a plurality of heat transfer tubes 34 that communicate with each other inside the inlet header 31 and the intermediate header 32.
- One tube bundle 35 and a second tube bundle 36 composed of a plurality of heat transfer tubes 34 communicating the inside of the intermediate header 32 and the outlet header 33 are provided.
- the inlet header 31, the outlet header 33, and the intermediate header 32 each have a box shape that defines a space therein.
- the inlet header 31 and the outlet header 33 are physically connected to each other on the outer surface so that the internal spaces do not communicate with each other, and constitute an integral header unit 37.
- the first tube bundle 35 extends from the inlet header 31 in a direction orthogonal to the upstream main tube 16, and the intermediate header 32 is arranged at a distance from the header unit 37 by being connected to the distal end of the first tube bundle 35. Is done.
- the second tube bundle 36 extends in parallel with the first tube bundle 35 from the intermediate header 32 toward the outlet header 33.
- the individual heat transfer tubes 34 constituting the first tube bundle 35 and the second tube bundle 36 are tubes extending in a straight line, and may have fins on the outer peripheral surface in order to increase the surface area.
- Each of the first tube bundle 35 and the second tube bundle 36 is disposed so that the heat transfer tubes 34 constitute a flat panel and face each other.
- each heat transfer tube 34 constituting the first tube bundle 35 and the second tube bundle 36 is inserted into a tube spacer 38 in which a plurality of through holes are formed.
- the tubes of the first tube bundle 35 and the second tube bundle 36 are inserted into the tube spacer 38, so that the tubes are held at relative positions separated from each other.
- the heat exchanger 4 is slidably mounted on the heat exchanger support 13 of the gantry 3 at the outlet header 33 and the intermediate header 32 of the header unit 37.
- the inlet header 31 is disposed above the outlet header 33, and the first tube bundle 35 and the second tube bundle 36 extend in a substantially horizontal direction.
- the heat exchanger 4 is arranged so that the extending direction of the heat transfer tubes 34 of the first tube bundle 35 and the second tube bundle 36 is orthogonal to the extending direction of the upstream main tube 16 of the upstream manifold 6 in plan view. Placed on the gantry 3.
- the plurality of heat exchangers 4 are arranged at predetermined intervals in the extending direction of the upstream main pipe 16.
- the header unit 37 of an arbitrary heat exchanger 4 is connected to the header unit 37 of the heat exchanger 4 arranged adjacent to the extending direction of the upstream main pipe 16 via a connecting plate 41.
- the connection plate 41 is connected to the header unit 37 so as to be able to exchange heat, and grease may be applied to the contact surface in order to increase heat exchange efficiency.
- the header unit 37 of the heat exchanger 4 adjacent to the reference line A is connected to the support body 21 via a connecting plate 41.
- the connecting plate 41 is formed in a flat plate shape, the main surface is orthogonal to the extending direction of the heat transfer tubes 34 of the first and second tube bundles 35, 36, and the header units 37 at both ends in the extending direction of the upstream main tube 16. Alternatively, it is fastened to the support 21 with bolts. In other embodiments, the connecting plate 41 may be coupled to the header unit 37 or the support body 21 by other coupling methods such as welding. Most of each connecting plate 41 is covered with a heat insulating material 42 except for a connecting portion with the header unit 37 or the support 21. By providing the heat insulating material 42, the temperature of the connecting plate 41 can be brought close to the header unit 37.
- Each inlet header 31 has a linear inlet pipe 45 extending upward.
- the end of the inlet pipe 45 is connected to the end of the upstream branch pipe 18 by bolt fastening, welding, or the like.
- Each outlet header 33 has an outlet pipe 46 extending downward.
- the inlet header 31 and outlet header 33 of each heat exchanger 4 have a pair of inlet tubes 45 and a pair of outlet tubes 46, respectively.
- the inlet header 31 and the outlet header 33 of each heat exchanger 4 may have only one inlet pipe 45 and only one outlet pipe 46, respectively.
- a plurality of branch pipes belong to the scope of the right of the present invention even when they are commonly connected to the header of the same heat exchanger 4.
- the downstream manifold 7 includes a downstream main pipe 51 that extends linearly and parallel to the upstream main pipe 16 below the upstream main pipe 16 of the upstream manifold 6, and a downstream main pipe.
- One downstream collecting pipe 52 connected to an intermediate portion in the longitudinal direction of 51 and a plurality of linear downstream branch pipes 53 connected to the downstream main pipe 51.
- the plurality of downstream branch pipes 53 are arranged at intervals in the longitudinal direction of the downstream main pipe 51.
- the downstream manifold 7 is connected to the outlet pipe 46 of the outlet header 33 of each heat exchanger 4 by bolt fastening, welding, or the like at the end of the downstream branch pipe 53.
- the downstream main pipe 51 has a sufficiently large inner diameter with respect to the downstream branch pipe 53.
- a connecting portion 54 between the downstream main pipe 51 and the downstream collecting pipe 52 is disposed on the reference line A, and a connecting member 55 (for example, a U bolt, a clamp, or the like) is connected to the support 21 on the reference line A. ).
- the downstream main pipe 51 is mainly expanded outward in the extending direction with the reference line A as the center of expansion.
- the connecting portion 54 is fixed and is not displaced.
- the downstream manifold 7 may be supported by the support 21 via a deformable member (for example, a spring) so as not to inhibit thermal expansion in each part of the downstream main pipe 51.
- the upstream side manifold 6, the header unit 37, the downstream side manifold 7 and the connecting plate 41 in this embodiment are made of materials having substantially the same coefficient of thermal expansion.
- the upstream manifold 6, the header unit 37, the downstream manifold 7 and the connecting plate 41 are formed of the same metal material so that the thermal expansion coefficients are the same.
- the fan device 5 includes a fan main body 63 including a cylindrical fan ring 61 and a fan 62 rotatably supported inside the fan ring 61, and a driving device 64 for rotating the fan 62. .
- the drive device 64 includes an electric motor 65 and a transmission mechanism 66 that connects the rotation shaft of the electric motor 65 and the rotation shaft of the fan 62.
- Each fan device 5 is supported by a fan support portion 14 below each heat exchanger 4 in the fan main body 63.
- the fan device 5 supplies air from the downstream side to the outer surfaces of the first tube bundle 35 and the second tube bundle 36 as the fan 62 rotates.
- a configuration in which one fan device 5 is arranged for one heat exchanger 4 is shown.
- one fan device 5 is arranged for a plurality of heat exchangers 4. It is good also as a structure.
- the refrigerant is supplied to the upstream main pipe 16 via the upstream collecting pipe 17 of the upstream manifold 6 and distributed to each upstream branch pipe 18. It is supplied to the heat exchanger 4.
- the refrigerant sequentially passes through the inlet pipe 45, the inlet header 31, the first pipe bundle 35, the intermediate header 32, the second pipe bundle 36, the outlet header 33, and the outlet pipe 46.
- the refrigerant that has passed through each heat exchanger 4 flows from each outlet pipe 46 to each downstream branch pipe 53 of the downstream manifold 7, joins in the downstream main pipe 51, and then flows to the downstream collecting pipe 52.
- the refrigerant flows through the first tube bundle 35 and the second tube bundle 36, the refrigerant exchanges heat with the air supplied by the fan device 5 via the heat transfer tubes 34 constituting each tube bundle and is cooled.
- the upstream manifold 6 and the downstream manifold 7 are obtained by circulating the refrigerant. Since the position of each heat exchanger 4 also changes with respect to the gantry 3 during thermal expansion, the stress generated in the upstream branch pipe 18, the downstream branch pipe 53, the inlet pipe 45, and the outlet pipe 46 is reduced.
- the temperature of the header unit 37 is raised by the refrigerant passing through the header unit 37, and the connecting plate 41 connected to the header unit 37 is raised. Be warmed.
- the header unit 37 and the connecting plate 41 form a row coupled to the support 21 at the midpoint. Therefore, this column thermally expands outward from the reference line A in the extending direction of the upstream main pipe 16 and the downstream main pipe 51. Therefore, the relative position change of the upstream end and the downstream end of the upstream branch pipe 18 is reduced, and the stress generated in the upstream branch pipe 18 is reduced.
- the relative position change between the upstream end and the downstream end of the downstream branch pipe 53 is reduced, and the stress generated in the downstream branch pipe 53 is reduced. Therefore, the necessity for providing an additional structure such as an elbow portion in the upstream branch pipe 18 and the downstream branch pipe 53 is reduced, and the structure can be simplified. Thereby, the manufacturing cost can be reduced.
- an air-cooled heat exchange device 1 according to a second embodiment With reference to FIGS. 5 to 7, an air-cooled heat exchange device 1 according to a second embodiment will be described.
- the air-cooled heat exchange device 100 according to the second embodiment is different from the air-cooled heat exchange device 1 according to the first embodiment in the configurations of the heat exchanger 4 and the connecting plate 41, and the other configurations are the same. It is.
- the same configurations as those of the air-cooled heat exchange device 1 according to the first embodiment are denoted by the same reference numerals and description thereof is omitted.
- the heat exchanger 70 of the air-cooled heat exchange apparatus 100 has a configuration in which the inlet header 31 and the outlet header 33 are separated from each other.
- the upper surface of the outlet header 33 is formed in a smooth plane, and a plate-shaped interposed member 71 is placed on the upper surface.
- the interposed member 71 is made of a material having a small friction coefficient such as a fluororesin. Alternatively, the interposed member 71 may be formed of a material that can be easily deformed.
- the inlet header 31 is placed on the upper surface of the intervention member 71.
- the tube spacer 38 is separated into a portion that holds the first tube bundle 35 and a portion that holds the second tube bundle 36.
- the inlet header 31 can be displaced in the extending direction of the upstream main pipe 16 with respect to the outlet header 33.
- the inlet header 31 may slide with respect to the interposed member 71, or the interposed member 71 may slide with respect to the outlet header 33.
- the interposed member 71 may be deformed.
- the inlet header 31 may be placed directly on the upper surface of the outlet header 33 so that the inlet header 31 slides with respect to the outlet header 33.
- first tube bundle 35 and the second tube bundle 36 are sufficiently long with respect to the displacement amount of the inlet header 31 with respect to the outlet header 33, even if the inlet header 31 is displaced with respect to the outlet header 33, the first tube bundle 35 and the second tube bundle 36.
- the tube bundle 36 is not damaged.
- the inlet header 31 of the heat exchanger 70 is connected to the inlet header 31 of the heat exchanger 70 disposed adjacent to the upstream main pipe 16 in the extending direction via an inlet side connecting plate 75. Further, the inlet header 31 of the heat exchanger 70 closest to the reference line A is connected to the support 21 via the inlet side connecting plate 75. Similarly, the outlet header 33 of the heat exchanger 70 is connected to the outlet header 33 of the heat exchanger 70 disposed adjacent to the upstream main pipe 16 in the extending direction via an outlet side connecting plate 76. Further, the outlet header 33 of the heat exchanger 70 closest to the reference line A is connected to the support 21 via the outlet side connecting plate 76. In the present embodiment, the support 21 is connected to the gantry 3.
- the inlet side connecting plate 75 and the outlet side connecting plate 76 are formed in a flat plate shape, and the main surface is orthogonal to the extending direction of the first and second tube bundles 35 and 36, and the inlet header 31, the outlet header 33 or the support body 21. It is fastened with bolts.
- the inlet side connecting plate 75 and the outlet side connecting plate 76 may be mostly covered with a heat insulating material.
- the upstream manifold 6, the inlet header 31, the outlet header 33, the downstream manifold 7, the inlet side connecting plate 75, and the outlet side connecting plate 76 are made of materials having substantially the same coefficient of thermal expansion.
- the upstream manifold 6, the header unit 37, the downstream manifold 7 and the connecting plate 41 are formed of the same metal material so that the thermal expansion coefficients are the same.
- the inlet header 31 can be relatively displaced with respect to the outlet header 33, and the outlet header 33 can be relatively displaced with respect to the gantry 3. Since the refrigerant is cooled by passing through the first tube bundle 35 and the second tube bundle 36, the temperatures of the upstream manifold 6 and the inlet header 31 before that are substantially equal, and the outlet header 33 and the downstream manifold 7 thereafter. The temperatures of are approximately equal. Therefore, as shown in FIG. 7B, the displacement amount of the inlet header 31 and the inlet side connecting plate 75 connected to each other is larger than the outlet header 33 and the outlet side connecting plate 76 connected to each other.
- the air-cooling type heat exchange device 100 according to the second embodiment further reduces the stress generated in the upstream branch pipe 18 and the downstream branch pipe 53. can do.
- each component is connected to the support 21 so that thermal expansion occurs around the reference line A, but the support 21 may be omitted in other embodiments.
- the shape of the gantry 3 and the installation position of the fan device 5 can be changed as appropriate.
- the fact that the connecting member has the same coefficient of thermal expansion as that of the upstream main pipe does not necessarily mean that the coefficients of thermal expansion are approximately equal, and the row consisting of the inlet header and the corresponding connecting plate is upstream. It should be understood that it is broadly meant to show the same tendency of thermal expansion as the side main pipe.
Abstract
Description
図1及び図2に示すように、第1実施形態に係る空冷式熱交換装置1は、基面(地面又は床面)2上に立設された架台3と、架台3上に載置された複数の熱交換器4及びファン装置5と、熱交換器4に冷媒を供給する上流側マニフォールド6と、熱交換器4を通過した冷媒が排出される下流側マニフォールド7とを有している。
図5~図7を参照して、第2実施形態に係る空冷式熱交換装置1について説明する。第2実施形態に係る空冷式熱交換装置100は、第1実施形態に係る空冷式熱交換装置1と比較して、熱交換器4及び連結板41の構成が相違し、他の構成は同様である。以下の説明において、第1実施形態に係る空冷式熱交換装置1と同様の構成は、同一の符号を付して説明を省略する。
Claims (11)
- 空冷式熱交換装置であって、
架台と、
第1の方向に延在する上流側主管、該上流側主管に流体を供給するために前記上流側主管に連通する上流側集合管、及び前記第1の方向に沿う前記上流側主管の異なる点から延出する複数の分岐管を備えた上流側マニフォールドと、
前記分岐管のそれぞれに連結されると共に前記架台上に変位可能に取り付けられた入口ヘッダ、一端にて前記入口ヘッダに連結された伝熱管束、及び前記伝熱管束の他端に連結された出口ヘッダを備えた熱交換器と、
前記入口ヘッダの少なくとも2つを互いに連結する連結部材とを有し、
前記連結部材が前記上流側主管と同様の熱膨張率を有すること特徴とする空冷式熱交換装置。 - 前記入口ヘッダが低摩擦材を介して前記架台上に変位可能に取り付けられていることを特徴とする請求項1に記載の空冷式熱交換装置。
- 前記入口ヘッダが変形容易材を介して前記架台上に変位可能に取り付けられていることを特徴とする請求項1に記載の空冷式熱交換装置。
- 前記連結部材は、少なくとも部分的に断熱材によって覆われていることを特徴とする請求項1に記載の空冷式熱交換装置。
- 前記入口ヘッダ及び前記出口ヘッダが互いに上下に配置され、前記伝熱管束が、前記入口ヘッダが前記第1の方向に実質的に直交する第2の方向に延出する第1の伝熱管束と、前記第1の伝熱管束の遠位端から前記出口ヘッダに向けて、前記第1の伝熱管束に平行に延在する第2の伝熱管束とを有し、
当該装置が、更に前記第1の方向に延在する下流側主管、該下流側主管から流体を排出するために前記下流側主管に連通する下流側集合管、及び前記第1の方向に沿う前記下流側主管の異なる点から延出し、対応する前記熱交換器の前記出口ヘッダに連通する複数の分岐管を備えた下流側マニフォールドを有することを特徴とする請求項1に記載の空冷式熱交換装置。 - 前記熱交換器のそれぞれが、前記第1の伝熱管束の遠位端と前記第2の伝熱管束の対応端との間に連結された中間ヘッダを有することを特徴とする請求項5に記載の空冷式熱交換装置。
- 前記熱交換器のそれぞれの前記入口ヘッダ及び前記出口ヘッダが互いに固着されていることにより協働してヘッダユニットを構成し、該ヘッダユニットが前記架台により変位可能に支持されていることを特徴とする請求項5に記載の空冷式熱交換装置。
- 前記熱交換器のそれぞれの前記入口ヘッダ及び前記出口ヘッダが前記架台により個別に変位可能に支持されていることを特徴とする請求項5に記載の空冷式熱交換装置。
- 前記出口ヘッダが、前記入口ヘッダとは別個に、互いに対応する連結部材により互いに連結されていることを特徴とする請求項8に記載の空冷式熱交換装置。
- 前記上流側主管の中間部が、固定された支持部材に結合され、前記上流側集合管が、前記上流側主管の前記中間部に接続されていることを特徴とする請求項1に記載の空冷式熱交換装置。
- 前記支持部材に隣接する前記熱交換器の前記入口ヘッダが、連結部材により前記支持部材に結合されていることを特徴とする請求項10に記載の空冷式熱交換装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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MYPI2015700688A MY182146A (en) | 2012-09-06 | 2013-08-14 | Air-cooled heat exchanger system |
US14/426,350 US10066880B2 (en) | 2012-09-06 | 2013-08-14 | Air-cooled heat exchanger system |
AU2013311197A AU2013311197B2 (en) | 2012-09-06 | 2013-08-14 | Air-cooled heat exchanger system |
RU2015112307A RU2618775C2 (ru) | 2012-09-06 | 2013-08-14 | Система теплообменника с воздушным охлаждением |
AP2015008326A AP2015008326A0 (en) | 2012-09-06 | 2013-08-14 | Air-cooled heat exchanger system |
CA2883103A CA2883103C (en) | 2012-09-06 | 2013-08-14 | Air-cooled heat exchanger system |
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JP2012195924A JP2014052119A (ja) | 2012-09-06 | 2012-09-06 | 空冷式熱交換装置 |
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JP (1) | JP2014052119A (ja) |
AP (1) | AP2015008326A0 (ja) |
AU (1) | AU2013311197B2 (ja) |
CA (1) | CA2883103C (ja) |
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CA2883103A1 (en) | 2014-03-13 |
US10066880B2 (en) | 2018-09-04 |
CA2883103C (en) | 2019-03-19 |
AU2013311197B2 (en) | 2017-04-13 |
AP2015008326A0 (en) | 2015-03-31 |
AU2013311197A1 (en) | 2015-03-19 |
JP2014052119A (ja) | 2014-03-20 |
RU2618775C2 (ru) | 2017-05-11 |
RU2015112307A (ru) | 2016-10-27 |
US20150233651A1 (en) | 2015-08-20 |
MY182146A (en) | 2021-01-18 |
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