EP2400247A2 - Heat exchanger and nozzle of heat exchanger - Google Patents
Heat exchanger and nozzle of heat exchanger Download PDFInfo
- Publication number
- EP2400247A2 EP2400247A2 EP11170678A EP11170678A EP2400247A2 EP 2400247 A2 EP2400247 A2 EP 2400247A2 EP 11170678 A EP11170678 A EP 11170678A EP 11170678 A EP11170678 A EP 11170678A EP 2400247 A2 EP2400247 A2 EP 2400247A2
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- EP
- European Patent Office
- Prior art keywords
- fluid
- passage
- heat exchanger
- shell
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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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
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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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
Definitions
- a nozzle structure for a heat exchanger or the like that a thermal sleeve, which is formed of a cylindrical body having a diameter smaller than that of the nozzle and has its one end attached to the inner peripheral wall on the upstream side of the nozzle, is disposed within the nozzle which is provided to introduce a high-temperature fluid into the main body of the heat exchanger or the like.
- FIG. 1 is a sectional view showing a cross section of the structure of the heat exchanger according to one embodiment.
- FIG. 2 is a view showing a main portion cross section of FIG 1 .
- FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment.
- FIG. 4 is a view showing a cross section taken along A-A of FIG. 3 .
- FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment.
- FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment.
- a heat exchanger is provided with an inside shell, an outside shell, a cooling portion, and an inlet nozzle.
- the inside shell has an inside space for flowing a fluid, and an opening portion for outflowing the fluid from the inside space.
- the outside shell covers the inside shell to form a first passage between them to flow the fluid outflowing from the opening portion.
- the cooling portion is disposed within the inside shell to cool the fluid within the inside space.
- the inlet nozzle has an inner pipe, an outer pipe, and an outlet pipe. The inner pipe flows the fluid into the inside space through the outside shell.
- the outer pipe covers the inner pipe to form a second passage between them and has its one end connected to the outside shell to communicate the second passage with the first passage, and its other end connected to the inner pipe on the outside of the outside shell to seal the second passage to flow the fluid partly from the first passage to the second passage.
- the outlet pipe is connected to the outer pipe to inflow the fluid from the second passage.
- a nozzle of a heat exchanger has an inner pipe, an outer pipe, and an outlet pipe.
- the inner pipe flows a fluid from outside into an inside space of the heat exchanger.
- the outer pipe covers the inner pipe to form a passage between them, and has its one end connected to the heat exchanger to communicate the passage with the inside space and its other end connected to the inner pipe on the outside of the heat exchanger to seal the passage to flow the fluid partly from the inside space to the passage.
- the outlet pipe is connected to the outer pipe to inflow the fluid from the passage.
- FIG. 1 is a sectional view showing a cross section of the structure of heat exchanger 10 according to a first embodiment.
- FIG. 2 is a view showing a main portion cross section of FIG. 1 .
- the heat exchanger 10 is provided with an outside shell 11 which is formed into a hollow cylindrical shape in which a fluid S such as steam is flown, and an inside shell 12 which is formed into a hollow cylindrical shape and disposed within the outside shell 11.
- One end of the inside shell 12 is supported by and fixed to a disk-shape tube plate 25 which is disposed at one longitudinal end of the outside shell 11 (right end side of the outside shell 11 in the drawing).
- An outlet nozzle I which allows the fluid S to flow outside is connected to the other longitudinal end of the outside shell I (left end side of the outside shell 11 in the drawing).
- An opening portion 12a where the fluid S outflows from the inside shell 12 is disposed on the circumferential surface and on the right end side (tube plate 25 side) of the inside shell 12.
- Plural heat transfer pipes (hereinafter called as "heat transfer pipe group") 13 are provided within the inside shell 12.
- the heat transfer pipe group 13 is pierced through and supported by the tube plate 25.
- Low-temperature water L flowing from, for example, an unshown water supplier to a boiler is supplied to the heat transfer pipe group 13 to cool down the fluid S within the inside shell 12.
- the low-temperature water L flows into a water inlet port 14 and out from a water outlet port 15.
- a dividing plate 16 divides the water inlet port 19 and the water outlet port 15.
- the outside shell 11 covers the inside shell 12 to form a first passage 17, where the fluid S inflowing through the opening portion 12a flows, between the outside shell 11 and the inside shell 12.
- the fluid S from the opening portion 12a which is formed on the right side of the outside shell 11, flows through the first passage 17 in the left direction in the drawing and outflows from the outlet nozzle 18 which is connected to the left end side of the outside shell 11.
- an inlet nozzle 19 where a high-temperature fluid (steam) coming from the steam turbine enters is fitted to the circumferential surface and on the left end side of the outside shell 11.
- the inlet nozzle 19 is comprised of an inner pipe 20, an outer pipe 21 and an outlet pipe 22.
- One end of the inner pipe 20 is pierced through the outside shell 11 an attached from the outside to the circumferential surface on the left end side of the inside shell 12, and the fluid S flows from the inner pipe 20 into the inside shell 12.
- the fluid S from the inner pipe 20 flows within the inside shell 12 in the right direction in the drawing and flows from the opening portion 12a to the first passage 17.
- the outer pipe 21 has an inner diameter larger than the outer diameter of the inner pipe 20 and covers the inner pipe 20 to form a second passage 23 between the outer pipe 21 and the inner pipe 2d.
- One end of the outer pipe 21 is connected to the outside shell 11 to communicate the second passage 23 with the first passage 17.
- the other end of the outer pipe 21 is connected to the inner pipe 20 on the outside of the outside shell 11 to seal one end of the second passage 23.
- the outer pipe 21 forms the second passage 23 between the outer pipe 21 and the inner pipe 20 to inflow partly the fluid S from the first passage 17.
- the outlet pipe 22 has a bypass function to outflow the fluid S partly from the outer pipe 21 to the outlet nozzle 18.
- the fluid S of a high temperature is flown from the inner pipe 20 of the inlet nozzle 19 into the left end of the inside shell 12, moved to the right direction within the inside shell 12 in the drawing, and cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
- the cooled fluid S outflows from the opening portion 12a of the inside shell 12 to the first passage 17.
- the opening portion 12a is provided at the right end of the inside shell 12, and the inlet nozzle 19 is provided at the left end of the inside shell 12 away from the opening portion 12a.
- the fluid S in the first passage 17 flows along the inner circumferential surface of the outside shell 11 and the outer circumferential surface of the inside shell 12 in the left direction in the drawing and can cool down the outside shell 11 and the inside shell 12.
- the fluid S in the first passage 17 is flown out of the heat exchanger 10 through the outlet nozzle 18 at the left end of the outside shell 11.
- the fluid S from the first passage 17 is partly divided to flow into the second passage 23 of the inlet nozzle 19.
- the fluid S in the second passage 23 flows upward along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 in the drawing to cool down the inner pipe 20 and the outer pipe 21.
- the fluid S in the second passage 23 outflows into the outlet pipe 22.
- the fluid S in the outlet pipe 22 flows in the left direction in the drawing, joins at the outlet nozzle 18 with the fluid S coming from the first passage 17 and flows out of the heat exchanger 10.
- the heat exchanger of this embodiment is formed with the first passage 17, where the cooled fluid flows, between the outside shell 11 and the inside shell 12 of the double structure and provided with the inlet nozzle 19 which forms the second passage 23 in which the cooled fluid inflows partly. Therefore, the outside shell 11, the inside shell 12 and the inlet nozzle 19 where the high-temperature fluid flows can be cooled down. As a result, the reduction of thermal stress and creep in the heat exchanger and the nozzle 19 can be improved, and the heat exchanger with high reliability can be provided.
- the heat exchanger for cooling the gas such as steam was described, but it is not limited to the above use but can also be applied to a heat exchanger for cooling a liquid such as oil, for example.
- FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment.
- FIG. 4 is a view showing a cross section taken along A-A of FIG. 3 .
- the heat exchanger 10 of this embodiment is provided with plural support portions 30 for supporting the inside shell 12 by the inner circumferential surface of the outside shell 11.
- the inside shell 12 has an end face 12b, which is opposed to and away from the tube plate 25, at one longitudinal end of the inside shell 12 (right end of the inside shell 12 in the drawing) to form a space between the tube plate 25 and the end face 12b. This space functions as a part of the first passage.
- the end face 12b serves together with the tube plate 25 to support the pierced heat transfer pipe group 13.
- the opening portion 12a through which the fluid. S outflows from the inside is disposed on the circumferential surface at the right end of the inside shell 12 and at the end face 12b.
- the fluid S in the first passage 17 flows in the left direction in the drawing along the inner circumferential surface of the outside shell 11 and the outer circumferential surface of the inside shell 12 to cool down the outside shell 11and the inside shell 12.
- the fluid S in the first passage 17 flows downward in the drawing along the end face 12b and the tube plate 25 to cool down the tube plate 25.
- the heat exchanger of this embodiment provides the same effects as in the first embodiment.
- the inside shell 12 is supported independent of and within the outside shell 11, so that a first route where the cooled fluid flows can also be formed in the space between the end face 12b and the tube plate 25.
- the reduction of thermal stress and creep in the tube plate 25 can also be improved, so that a heat exchanger with higher reliability can be provided.
- FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment.
- the heat exchanger 10 ofthis embodiment has substantially the same structure as that of the heat exchanger of FIG. 4 . But it has the following differences. That is, the tube plate 25 shields one longitudinal end within the outside shell 11 and is disposed below the inside shell 12. As a result, the longitudinal directions of the outside shell 11 and the inside shell 12 become vertical directions in the drawing, and the heat exchanger 10 is vertically disposed.
- the inlet nozzle 19 is disposed on the circumferential surface at an upper end side of the outside shell 11.
- the inner pipe 20 is mounted on the circumferential surface at an upper end side of the inside shell 12 through the outside shell 11 from the outside to flow the fluid S into the inside shell 12.
- a condensed drain (liquid resulting from condensation of steam) W generated while operating can be held on the side of the tube plate 25, so that a recovery nozzle 31 for outflowing the condensed drain W is mounted on the circumferential surface of the tube plate 25.
- the high-temperature fluid S inflows from the inner pipe 20 of the inlet nozzle 19 into an upper end of the inside shell 12 and moves downward in the inside shell 12 in the drawing and is cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
- the cooled fluid S outflows from the opening portion 12a of the inside shell 12 to the first passage 17.
- the fluid S in the first passage 17 flows along the inner circumferential surface of the outside shell 11and the outer circumferential surface of the inside shell 12 upward in the drawing and can cool down the outside shell 11 and the inside shell 12.
- the fluid S in the first passage 17 flows out of the heat exchanger 10 through the outlet nozzle 18 at the upper end of the outside shell 11.
- the fluid S in the first passage 17 is divided partly to flow into the second passage 23 of the inlet nozzle 19.
- the fluid S in the second passage 23 flows in the right direction in the drawing along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 to cool down the inner pipe 20 and the outer pipe 21.
- the fluid S in the second passage 23 outflows to the outlet pipe 22.
- the fluid S in the outlet pipe 22 flows upward in the drawing, joins in the outlet nozzle 18 with the fluid S coming from the first passage 17, and flows out of the heat exchanger 10.
- the fluid S condenses in the heat exchanger 10 to generate the condensed drain W.
- the condensed drain W flows onto the tube plate 25, flows out of the heat exchanger 10 through the recovery nozzle 31, and can be recovered.
- the same effects as in the second embodiment can be obtained by the heat exchanger of this embodiment.
- the recovery nozzle 31 can be connected to the tube plate 25. As a result, recovery of the condensed drain W is also facilitated, and a heat exchanger with higher reliability can be provided.
- FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment. As shown in FIG. 6 , this embodiment is an example that the inlet nozzle 19 is mounted on the heat exchanger 10 having a structure with the outside shell 11 only.
- This inlet nozzle 19 is mounted on the circumferential surface at the right end side of the outside shell 11.
- the inlet nozzle 19 is comprised of the inner pipe 20, the outer pipe 21 and the outlet pipe 22 in the same manner as in the first embodiment.
- One end of the inner pipe 20 is pierced through the outside shell 11 to contact the right end side of the outside shell 11 from outside, namely to the heat transfer pipe group 13 on a base end side, to flow the fluid S into the outside shell 11.
- the low-temperature water L flows into and out of the heat transfer pipe group 13.
- the outer pipe 21 covers the inner pipe 20 to form the second passage 23 between them.
- One end of the outer pipe 21 is connected to the outside shell 11 to communicate the second passage 23 with the inside space of the outside shell 11.
- the other end of the outer pipe 21 is connected to the inner pipe 20 outside the outside shell 11 to seal one end of the second passage 23.
- the outer pipe 21 forms the second passage 23, which is joinable to the inside space of the outside shell 11, between the outer pipe 21 and the inner pipe 20, and the fluid S inflows partly from the inside space of the outside shell 11.
- the outlet pipe 22 has its one end connected to the outer pipe 21 and the other end connected to the outlet nozzle 18 in the same manner as in the first embodiment, and the fluid S flowing from the outside shell I 1 into the second passage 23 is partly bypassed to the outlet nozzle 18.
- the high-temperature fluid S flows from the inner pipe 20 of the inlet nozzle 19 into the right end of the outside shell 11, moves in the left direction within the outside shell 11 in the drawing, and is cooled by the low-temperature water L which flows to make a circuit within the heat transfer pipe group 13.
- the cooled fluid S can cool down the outside shell 11 by flowing in the left direction within the outside shell 1 in the drawing.
- the fluid S outflows from the outlet nozzle 18 mounted at the left end of the outside shell 11.
- the cooled fluid S is divided to flow partly into the second passage 23 of the inlet nozzle 19.
- the fluid S in the second passage 23 flows upward in the drawing along the outer circumferential surface of the inner pipe 20 and the inner circumferential surface of the outer pipe 21 to cool down the inner pipe 20 and the outer pipe 21.
- the fluid S in the second passage 23 outflows to the outlet pipe 22.
- the fluid S in the outlet pipe 22 flows in the left direction in the drawing, joins at the outlet nozzle 18 with the fluid S coming from the outside shell 11 and flows out of the heat exchanger 10.
- the cooled fluid flows inside the outside shell 11, and the inlet nozzle 19 which forms the passage in which the cooled fluid flows is provided, and the outside shell 11 and the inlet nozzle 19 where the high-temperature fluid flows can be cooled.
- reduction of thermal stress and creep in the heat exchanger and the nozzle 19 can be improved, so that the heat exchanger with high reliability can be provided.
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- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
- Embodiments described herein relate generally to a heat exchanger and a nozzle of the heat exchanger
- There is proposed a nozzle structure for a heat exchanger or the like that a thermal sleeve, which is formed of a cylindrical body having a diameter smaller than that of the nozzle and has its one end attached to the inner peripheral wall on the upstream side of the nozzle, is disposed within the nozzle which is provided to introduce a high-temperature fluid into the main body of the heat exchanger or the like.
- But, when the above nozzle structure is used for the heat exchanger in which a heating steam temperature becomes high, thermal stress and creep in the nozzle where the high-temperature steam enters cannot be eased.
-
FIG. 1 is a sectional view showing a cross section of the structure of the heat exchanger according to one embodiment. -
FIG. 2 is a view showing a main portion cross section ofFIG 1 . -
FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment. -
FIG. 4 is a view showing a cross section taken along A-A ofFIG. 3 . -
FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment. -
FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment. - In one embodiment, a heat exchanger is provided with an inside shell, an outside shell, a cooling portion, and an inlet nozzle. The inside shell has an inside space for flowing a fluid, and an opening portion for outflowing the fluid from the inside space. The outside shell covers the inside shell to form a first passage between them to flow the fluid outflowing from the opening portion. The cooling portion is disposed within the inside shell to cool the fluid within the inside space. The inlet nozzle has an inner pipe, an outer pipe, and an outlet pipe. The inner pipe flows the fluid into the inside space through the outside shell. The outer pipe covers the inner pipe to form a second passage between them and has its one end connected to the outside shell to communicate the second passage with the first passage, and its other end connected to the inner pipe on the outside of the outside shell to seal the second passage to flow the fluid partly from the first passage to the second passage. The outlet pipe is connected to the outer pipe to inflow the fluid from the second passage.
- In one embodiment, a nozzle of a heat exchanger has an inner pipe, an outer pipe, and an outlet pipe. The inner pipe flows a fluid from outside into an inside space of the heat exchanger. The outer pipe covers the inner pipe to form a passage between them, and has its one end connected to the heat exchanger to communicate the passage with the inside space and its other end connected to the inner pipe on the outside of the heat exchanger to seal the passage to flow the fluid partly from the inside space to the passage. The outlet pipe is connected to the outer pipe to inflow the fluid from the passage.
- Embodiments are described below with reference to the drawings.
FIG. 1 is a sectional view showing a cross section of the structure ofheat exchanger 10 according to a first embodiment.FIG. 2 is a view showing a main portion cross section ofFIG. 1 . - As shown in
FIG. 1 , theheat exchanger 10 is provided with anoutside shell 11 which is formed into a hollow cylindrical shape in which a fluid S such as steam is flown, and aninside shell 12 which is formed into a hollow cylindrical shape and disposed within theoutside shell 11. One end of theinside shell 12 is supported by and fixed to a disk-shape tube plate 25 which is disposed at one longitudinal end of the outside shell 11 (right end side of theoutside shell 11 in the drawing). An outlet nozzle I which allows the fluid S to flow outside is connected to the other longitudinal end of the outside shell I (left end side of theoutside shell 11 in the drawing). - An
opening portion 12a where the fluid S outflows from theinside shell 12 is disposed on the circumferential surface and on the right end side (tube plate 25 side) of theinside shell 12. Plural heat transfer pipes (hereinafter called as "heat transfer pipe group") 13 are provided within theinside shell 12. The heattransfer pipe group 13 is pierced through and supported by thetube plate 25. Low-temperature water L flowing from, for example, an unshown water supplier to a boiler is supplied to the heattransfer pipe group 13 to cool down the fluid S within theinside shell 12. - The low-temperature water L flows into a
water inlet port 14 and out from awater outlet port 15. A dividingplate 16 divides thewater inlet port 19 and thewater outlet port 15. - The
outside shell 11 covers theinside shell 12 to form afirst passage 17, where the fluid S inflowing through theopening portion 12a flows, between theoutside shell 11 and theinside shell 12. The fluid S from theopening portion 12a, which is formed on the right side of theoutside shell 11, flows through thefirst passage 17 in the left direction in the drawing and outflows from theoutlet nozzle 18 which is connected to the left end side of theoutside shell 11. - As shown in
FIG. 2 , aninlet nozzle 19 where a high-temperature fluid (steam) coming from the steam turbine enters is fitted to the circumferential surface and on the left end side of theoutside shell 11. Theinlet nozzle 19 is comprised of aninner pipe 20, anouter pipe 21 and anoutlet pipe 22. - One end of the
inner pipe 20 is pierced through theoutside shell 11 an attached from the outside to the circumferential surface on the left end side of theinside shell 12, and the fluid S flows from theinner pipe 20 into theinside shell 12. The fluid S from theinner pipe 20 flows within theinside shell 12 in the right direction in the drawing and flows from theopening portion 12a to thefirst passage 17. - The
outer pipe 21 has an inner diameter larger than the outer diameter of theinner pipe 20 and covers theinner pipe 20 to form asecond passage 23 between theouter pipe 21 and the inner pipe 2d. One end of theouter pipe 21 is connected to theoutside shell 11 to communicate thesecond passage 23 with thefirst passage 17. The other end of theouter pipe 21 is connected to theinner pipe 20 on the outside of theoutside shell 11 to seal one end of thesecond passage 23. Thus, theouter pipe 21 forms thesecond passage 23 between theouter pipe 21 and theinner pipe 20 to inflow partly the fluid S from thefirst passage 17. - One end of the
outlet pipe 22 is connected to theouter pipe 21, and the other end is connected to theoutlet nozzle 18. Therefore, the fluid S can be partly outflown from theouter pipe 21 to theoutlet nozzle 18 through theoutlet pipe 22. Theoutlet pipe 22 has a bypass function to outflow the fluid S partly from theouter pipe 21 to theoutlet nozzle 18. - The fluid S of a high temperature is flown from the
inner pipe 20 of theinlet nozzle 19 into the left end of theinside shell 12, moved to the right direction within theinside shell 12 in the drawing, and cooled by the low-temperature water L which flows to make a circuit within the heattransfer pipe group 13. The cooled fluid S outflows from theopening portion 12a of theinside shell 12 to thefirst passage 17. - The
opening portion 12a is provided at the right end of theinside shell 12, and theinlet nozzle 19 is provided at the left end of theinside shell 12 away from theopening portion 12a. As a result, the distance that the fluid S flows in the inside space of theinside shell 12 becomes long, and the fluid S can be cooled efficiently by the heattransfer pipe group 13 as the cooling portion. - The fluid S in the
first passage 17 flows along the inner circumferential surface of theoutside shell 11 and the outer circumferential surface of theinside shell 12 in the left direction in the drawing and can cool down theoutside shell 11 and theinside shell 12. The fluid S in thefirst passage 17 is flown out of theheat exchanger 10 through theoutlet nozzle 18 at the left end of theoutside shell 11. - The fluid S from the
first passage 17 is partly divided to flow into thesecond passage 23 of theinlet nozzle 19. The fluid S in thesecond passage 23 flows upward along the outer circumferential surface of theinner pipe 20 and the inner circumferential surface of theouter pipe 21 in the drawing to cool down theinner pipe 20 and theouter pipe 21. The fluid S in thesecond passage 23 outflows into theoutlet pipe 22. The fluid S in theoutlet pipe 22 flows in the left direction in the drawing, joins at theoutlet nozzle 18 with the fluid S coming from thefirst passage 17 and flows out of theheat exchanger 10. - Thus, the heat exchanger of this embodiment is formed with the
first passage 17, where the cooled fluid flows, between theoutside shell 11 and theinside shell 12 of the double structure and provided with theinlet nozzle 19 which forms thesecond passage 23 in which the cooled fluid inflows partly. Therefore, theoutside shell 11, theinside shell 12 and theinlet nozzle 19 where the high-temperature fluid flows can be cooled down. As a result, the reduction of thermal stress and creep in the heat exchanger and thenozzle 19 can be improved, and the heat exchanger with high reliability can be provided. - In this embodiment, the heat exchanger for cooling the gas such as steam was described, but it is not limited to the above use but can also be applied to a heat exchanger for cooling a liquid such as oil, for example.
-
FIG. 3 is a view showing a main portion cross section of the heat exchanger according to a second embodiment.FIG. 4 is a view showing a cross section taken along A-A ofFIG. 3 . As shown inFIG. 3 andFIG. 4 , theheat exchanger 10 of this embodiment is provided withplural support portions 30 for supporting theinside shell 12 by the inner circumferential surface of theoutside shell 11. - The
inside shell 12 has anend face 12b, which is opposed to and away from thetube plate 25, at one longitudinal end of the inside shell 12 (right end of theinside shell 12 in the drawing) to form a space between thetube plate 25 and theend face 12b. This space functions as a part of the first passage. Theend face 12b serves together with thetube plate 25 to support the pierced heattransfer pipe group 13. Theopening portion 12a through which the fluid. S outflows from the inside is disposed on the circumferential surface at the right end of theinside shell 12 and at theend face 12b. - The fluid S in the
first passage 17 flows in the left direction in the drawing along the inner circumferential surface of theoutside shell 11 and the outer circumferential surface of theinside shell 12 to cool down the outside shell 11and theinside shell 12. In addition, the fluid S in thefirst passage 17 flows downward in the drawing along theend face 12b and thetube plate 25 to cool down thetube plate 25. - Thus, the heat exchanger of this embodiment provides the same effects as in the first embodiment. And, the
inside shell 12 is supported independent of and within theoutside shell 11, so that a first route where the cooled fluid flows can also be formed in the space between theend face 12b and thetube plate 25. As a result, the reduction of thermal stress and creep in thetube plate 25 can also be improved, so that a heat exchanger with higher reliability can be provided. -
FIG. 5 is a view showing a main portion cross section of the heat exchanger according to a third embodiment. As shown inFIG. 5 , theheat exchanger 10 ofthis embodiment has substantially the same structure as that of the heat exchanger ofFIG. 4 . But it has the following differences. That is, thetube plate 25 shields one longitudinal end within theoutside shell 11 and is disposed below theinside shell 12. As a result, the longitudinal directions of theoutside shell 11 and theinside shell 12 become vertical directions in the drawing, and theheat exchanger 10 is vertically disposed. - The
inlet nozzle 19 is disposed on the circumferential surface at an upper end side of theoutside shell 11. Theinner pipe 20 is mounted on the circumferential surface at an upper end side of theinside shell 12 through theoutside shell 11 from the outside to flow the fluid S into theinside shell 12. - In the
heat exchanger 10, a condensed drain (liquid resulting from condensation of steam) W generated while operating can be held on the side of thetube plate 25, so that arecovery nozzle 31 for outflowing the condensed drain W is mounted on the circumferential surface of thetube plate 25. - The high-temperature fluid S inflows from the
inner pipe 20 of theinlet nozzle 19 into an upper end of theinside shell 12 and moves downward in theinside shell 12 in the drawing and is cooled by the low-temperature water L which flows to make a circuit within the heattransfer pipe group 13. The cooled fluid S outflows from theopening portion 12a of theinside shell 12 to thefirst passage 17. - The fluid S in the
first passage 17 flows along the inner circumferential surface of the outside shell 11and the outer circumferential surface of theinside shell 12 upward in the drawing and can cool down theoutside shell 11 and theinside shell 12. The fluid S in thefirst passage 17 flows out of theheat exchanger 10 through theoutlet nozzle 18 at the upper end of theoutside shell 11. - The fluid S in the
first passage 17 is divided partly to flow into thesecond passage 23 of theinlet nozzle 19. The fluid S in thesecond passage 23 flows in the right direction in the drawing along the outer circumferential surface of theinner pipe 20 and the inner circumferential surface of theouter pipe 21 to cool down theinner pipe 20 and theouter pipe 21. The fluid S in thesecond passage 23 outflows to theoutlet pipe 22. The fluid S in theoutlet pipe 22 flows upward in the drawing, joins in theoutlet nozzle 18 with the fluid S coming from thefirst passage 17, and flows out of theheat exchanger 10. - When the
heat exchanger 10 is operating, the fluid S condenses in theheat exchanger 10 to generate the condensed drain W. The condensed drain W flows onto thetube plate 25, flows out of theheat exchanger 10 through therecovery nozzle 31, and can be recovered. - Thus, the same effects as in the second embodiment can be obtained by the heat exchanger of this embodiment. In addition, the
recovery nozzle 31 can be connected to thetube plate 25. As a result, recovery of the condensed drain W is also facilitated, and a heat exchanger with higher reliability can be provided. -
FIG. 6 is a view showing a main portion cross section of the heat exchanger according to a fourth embodiment. As shown inFIG. 6 , this embodiment is an example that theinlet nozzle 19 is mounted on theheat exchanger 10 having a structure with theoutside shell 11 only. - This
inlet nozzle 19 is mounted on the circumferential surface at the right end side of theoutside shell 11. Theinlet nozzle 19 is comprised of theinner pipe 20, theouter pipe 21 and theoutlet pipe 22 in the same manner as in the first embodiment. - One end of the
inner pipe 20 is pierced through theoutside shell 11 to contact the right end side of theoutside shell 11 from outside, namely to the heattransfer pipe group 13 on a base end side, to flow the fluid S into theoutside shell 11. The low-temperature water L flows into and out of the heattransfer pipe group 13. - The
outer pipe 21 covers theinner pipe 20 to form thesecond passage 23 between them. One end of theouter pipe 21 is connected to theoutside shell 11 to communicate thesecond passage 23 with the inside space of theoutside shell 11. The other end of theouter pipe 21 is connected to theinner pipe 20 outside theoutside shell 11 to seal one end of thesecond passage 23. Thus, theouter pipe 21 forms thesecond passage 23, which is joinable to the inside space of theoutside shell 11, between theouter pipe 21 and theinner pipe 20, and the fluid S inflows partly from the inside space of theoutside shell 11. - The
outlet pipe 22 has its one end connected to theouter pipe 21 and the other end connected to theoutlet nozzle 18 in the same manner as in the first embodiment, and the fluid S flowing from the outside shell I 1 into thesecond passage 23 is partly bypassed to theoutlet nozzle 18. - The high-temperature fluid S flows from the
inner pipe 20 of theinlet nozzle 19 into the right end of theoutside shell 11, moves in the left direction within theoutside shell 11 in the drawing, and is cooled by the low-temperature water L which flows to make a circuit within the heattransfer pipe group 13. The cooled fluid S can cool down theoutside shell 11 by flowing in the left direction within the outside shell 1 in the drawing. The fluid S outflows from theoutlet nozzle 18 mounted at the left end of theoutside shell 11. - The cooled fluid S is divided to flow partly into the
second passage 23 of theinlet nozzle 19. The fluid S in thesecond passage 23 flows upward in the drawing along the outer circumferential surface of theinner pipe 20 and the inner circumferential surface of theouter pipe 21 to cool down theinner pipe 20 and theouter pipe 21. The fluid S in thesecond passage 23 outflows to theoutlet pipe 22. The fluid S in theoutlet pipe 22 flows in the left direction in the drawing, joins at theoutlet nozzle 18 with the fluid S coming from theoutside shell 11 and flows out of theheat exchanger 10. - Thus, according to the heat exchanger of this embodiment, the cooled fluid flows inside the
outside shell 11, and theinlet nozzle 19 which forms the passage in which the cooled fluid flows is provided, and theoutside shell 11 and theinlet nozzle 19 where the high-temperature fluid flows can be cooled. As a result, reduction of thermal stress and creep in the heat exchanger and thenozzle 19 can be improved, so that the heat exchanger with high reliability can be provided. - While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel embodiments described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the embodiments described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.
Claims (7)
- A heat exchanger, comprising:an inside shell having an inside space for flowing a fluid, and an opening portion for outflowing the fluid from the inside space;an outside shell covering the inside shell to form a first passage between them to flow the fluid outflowing from the opening portion;a cooling portion disposed within the inside shell to cool the fluid in the inside space; andan inlet nozzle having an inner pipe which flows the fluid into the inside space through the outside shell, an outer pipe which covers the inner pipe to form a second passage between them, has its one end connected to the outside shell to communicate the second passage with the first passage, and its other end connected to the inner pipe on the outside of the outside shell to seal the second passage to flow the fluid partly from the first passage to the second passage, and an outlet pipe which is connected to the outer pipe to inflow the fluid from the second passage.
- The heat exchanger according to claim 1,
wherein the heat exchanger is further provided with an outlet nozzle which is connected to the outside shell and outflows the fluid inflowing from the first passage; and
wherein the outlet pipe outflows the fluid, which has inflown from the second passage, to the outlet nozzle. - The heat exchanger according to claim 1,
wherein the inside shell has a cylindrical shape;
wherein the heat exchanger is further provided with a support portion for supporting one end of the cylindrical shaped inside shell; and
wherein the opening portion is disposed at one end of the inside shell on the side of the support portion. - The heat exchanger according to claim 1, further comprising a support portion for supporting the inside shell within the outside shell,
wherein the inside shell also has an end face spaced from the support portion, and the space between the support portion and the end face functions as a part of the first passage. - The heat exchanger according to claim 3, further comprising:an outflowing portion which outflows the fluid accumulated at the support portion by condensation of the steam; anda tube plate which supports the cooling portion,wherein the support portion which shields one longitudinal end within the outside shell and is disposed on the tube plate side away from the inside shell.
- A nozzle of a heat exchanger, comprising:an inner pipe which flows a fluid from outside into an inside space of the heat exchanger;an outer pipe which covers the inner pipe to form a passage between them, and has its one end connected to the heat exchanger to communicate the passage with the inside space and its other end connected to the inner pipe on the outside of the heat exchanger to seal the passage to flow the fluid partly from the inside space to the passage; andan outlet pipe which is connected to the outer pipe to inflow the fluid from the passage.
- The nozzle according to claim 6,
wherein the heat exchanger has an outlet nozzle for outflowing the fluid which has inflow from the inside space, and the outlet pipe outflows the fluid, which has inflown from the inside space, to the outlet nozzle.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010141734A JP2012007761A (en) | 2010-06-22 | 2010-06-22 | Heat exchanger and nozzle of heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2400247A2 true EP2400247A2 (en) | 2011-12-28 |
EP2400247A3 EP2400247A3 (en) | 2014-01-01 |
Family
ID=44674977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11170678.4A Withdrawn EP2400247A3 (en) | 2010-06-22 | 2011-06-21 | Heat exchanger and nozzle of heat exchanger |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120145367A1 (en) |
EP (1) | EP2400247A3 (en) |
JP (1) | JP2012007761A (en) |
CN (1) | CN102313482B (en) |
Cited By (2)
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EP2975353A1 (en) * | 2014-07-16 | 2016-01-20 | Casale SA | Shell and tube heat exchangers |
RU2679580C1 (en) * | 2018-05-14 | 2019-02-11 | Владислав Юрьевич Климов | Heat exchanger |
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CN103673723B (en) * | 2013-12-21 | 2015-09-09 | 哈尔滨锅炉厂有限责任公司 | The heat exchanger of the overall containment structure of shell side |
RU2567466C1 (en) * | 2014-12-15 | 2015-11-10 | Владислав Юрьевич Климов | Heat exchanger |
DE102015212433A1 (en) * | 2015-07-02 | 2017-01-05 | Arvos Gmbh | Heat exchanger |
CN106643222B (en) * | 2016-11-25 | 2019-08-02 | 上海锅炉厂有限公司 | A kind of shell side is from cooling protection movable tube sheets heat exchanger and heat-exchange method |
CN106839823A (en) * | 2017-03-24 | 2017-06-13 | 南京聚拓化工科技有限公司 | A kind of HP boiler water deflection bar type preheater and chemical reaction equipment |
KR102343408B1 (en) * | 2017-11-17 | 2021-12-27 | 주식회사 엘지화학 | Heat exchanger |
JP2020056552A (en) * | 2018-10-03 | 2020-04-09 | 株式会社東芝 | Heat exchanger |
EP3640575B1 (en) * | 2018-10-15 | 2022-12-07 | Wieland Provides S.r.l. | Vertical heat exchanger |
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2011
- 2011-06-17 US US13/162,856 patent/US20120145367A1/en not_active Abandoned
- 2011-06-21 EP EP11170678.4A patent/EP2400247A3/en not_active Withdrawn
- 2011-06-22 CN CN201110168955.4A patent/CN102313482B/en not_active Expired - Fee Related
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EP2975353A1 (en) * | 2014-07-16 | 2016-01-20 | Casale SA | Shell and tube heat exchangers |
WO2016008675A1 (en) * | 2014-07-16 | 2016-01-21 | Casale Sa | Shell and tube heat exchanger |
US10386120B2 (en) | 2014-07-16 | 2019-08-20 | Casale Sa | Shell and tube heat exchanger |
RU2679580C1 (en) * | 2018-05-14 | 2019-02-11 | Владислав Юрьевич Климов | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
US20120145367A1 (en) | 2012-06-14 |
EP2400247A3 (en) | 2014-01-01 |
JP2012007761A (en) | 2012-01-12 |
CN102313482A (en) | 2012-01-11 |
CN102313482B (en) | 2013-06-26 |
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