US3630274A - Heat exchanger provided with a thermal barrier - Google Patents
Heat exchanger provided with a thermal barrier Download PDFInfo
- Publication number
- US3630274A US3630274A US826307A US3630274DA US3630274A US 3630274 A US3630274 A US 3630274A US 826307 A US826307 A US 826307A US 3630274D A US3630274D A US 3630274DA US 3630274 A US3630274 A US 3630274A
- Authority
- US
- United States
- Prior art keywords
- tubes
- tube
- heat exchanger
- tube sheet
- sodium
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/06—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium
- F22B1/063—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium for metal cooled nuclear reactors
-
- 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
- F28D7/16—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 being arranged in parallel spaced relation
- F28D7/1607—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 being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- 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
- F28F9/0229—Double end plates; Single end plates with hollow spaces
Definitions
- the invention relates to a heat exchanger in which steam is produced and which operates with liquid metal, as for example sodium as heat-transferring medium, mainlyformed by a casing, inside of which abundle of watertubes or steam tubes is provided attached between tube sheets, and inside of which casing the heat-transferring-medium flows around these tubes.
- liquid metal as for example sodium as heat-transferring medium
- the thermal stresses arisen from stationary and nonstationary temperature gradients mainly occur in the area of the tube sheet where the tubes are connected with the tube sheet.
- Such a gas shield has its drawbackscan for example only be embodied in a heat exchanger of the vertical type, which further necessitates a construction with one or more bent tube bundles so that on either side of these tube bundles such a gas shield can be applied.
- a heat exchanger is known in which a similar kind of thermal barrier is formedby application of a battle arranged transversely to the tube bundle at some distance of the tube sheet, themedium being stationary between this transverse baffle and the tube sheet, causing likewise a kind of thermal barrier grid to be formed for reduction of the heat transfer to the tube sheet fromthe heat-transferring medium flowing through the heat-exchanger.
- a large drawback of sucha transverse baffle is, when sodium is applied as heat-transferring-medium in a steam generator that if a leakage should arise in a tube-to-tube-sheet joint, the pressure of a sodium-water reaction. created by this will push aside the transverse baffle in'axial direction, causing a great damage to arise because the transverse baffle-will injure the tubes.
- thermal shocks from the sodium will be considerably reduced or prevented.
- tubular spaces will be composed of a number of baffles, together forming a grid, and at one side abutting to the tube sheet.
- This grid can for example be composed of two rows, provided at a certain angle, of several bafl'les provided parallel to each other, these baffles being provided with notches in such a way that a number of tubular spaces (sleeves) are formed, enclosing the tubes.
- each sleeve formed by these baffles enclose an individual water tube or steam tube.
- FIG. l shows a cross section of part of the tube bundle of a heat exchanger in which the positioning of the grid construction composed of tubular channels against the tube sheet is shown.
- FIG. 2 gives a cross section accordiirgto the line ll-ll in FIG. 1 in the direction of the tube sheet, the arrangement of the baffles being shown.
- FIG. 3 shows in what way this grid construction is situated with respect to the remaining parts of the heat exchanger.
- F IG. 1 l are the water tubes or steam tubes, which are attached to tube sheet 2, the tubes corresponding with holes 3 provided in the tube sheet for the connection of the steam tubes with header 4.
- the grid construction built up from baffles 5 is provided within a short open cylinder 6, with which the grid construction is attached to the tube sheet 2.
- open cylinder 6 is provided along its periphery with a flange-shaped ring 7 provided with holes, with which the cylinder is attached to the tube sheet by means of tapped bolts 8 and nuts 9.
- a large number of tubular channels 10, which enclose the steam tubes locally, are formed by two rows, provided at an angle, of bafiles 5, mutually parallel (see FIG. 2).
- tubular channels are closed at tube sheet side 11 and on the other side 12 they form an openconnection with the remaining inner space of the heat exchanger in which the sodium flows around the steam tubes.
- a heat exchanger for producing steam and operating with liquid metal as a heat-transferring medium comprising a plurality of water or steam tubes attached between two tube sheets, a casing enclosing said plurality of tubes and in which liquid metal flows around said tubes and a thermal barrier means in the transition area from tubes to tube sheets to reduce heat transfer to the tube sheets and the tubes near their attachment to the tube sheets, said thermal barrier means comprising a plurality of tubular spaces with their walls parallel to the tube walls and enclosing one or more of the tubes along a portion of their length, which spaces are closed on the one side by the tube sheet and on the other side are in open connection with the inner space of the heat exchanger.
- tubular spaces are formed by a number of baffles, together forming a grid, and at one side abutting to the tube sheet.
- a heat exchanger according to claim 1 wherein each tubular space encloses an individual tube.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6807673A NL6807673A (de) | 1968-05-30 | 1968-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3630274A true US3630274A (en) | 1971-12-28 |
Family
ID=19803786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US826307A Expired - Lifetime US3630274A (en) | 1968-05-30 | 1969-05-21 | Heat exchanger provided with a thermal barrier |
Country Status (8)
Country | Link |
---|---|
US (1) | US3630274A (de) |
JP (1) | JPS4833670B1 (de) |
BE (1) | BE733751A (de) |
DE (1) | DE1927388C3 (de) |
FR (1) | FR2009633B1 (de) |
GB (1) | GB1262377A (de) |
LU (1) | LU58745A1 (de) |
NL (1) | NL6807673A (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4236576A (en) * | 1978-09-14 | 1980-12-02 | Borsig Gmbh | Heat exchangers with tube bundles |
US4418748A (en) * | 1981-02-02 | 1983-12-06 | Commissariat A L'energie Atomique | Heat exchanger whose hot end has a device for protecting the tube plate |
US4537249A (en) * | 1981-02-02 | 1985-08-27 | The United States Of America As Represented By The United States Department Of Energy | Heat flux limiting sleeves |
WO2013164083A1 (de) * | 2012-05-01 | 2013-11-07 | Benteler Automobiltechnik Gmbh | Wärmetauscher mit zuführkanal |
WO2018017773A1 (en) * | 2016-07-19 | 2018-01-25 | Lummus Technology Inc. | Feed effluent heat exchanger |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2224841A1 (de) * | 1971-05-26 | 1972-12-07 | Atomic Energy Authority Uk | Wärmetauscher |
FR2183539B1 (de) * | 1972-05-09 | 1974-12-20 | Stein Industrie | |
FR2509432B1 (fr) * | 1981-07-08 | 1986-07-11 | Electricite De France | Perfectionnement aux generateurs de vapeur boites a eau et a vapeur spheriques |
FR2509431A1 (fr) * | 1981-07-08 | 1983-01-14 | Electricite De France | Dispositif de compensation des dilatations dans un generateur de vapeur |
IT1200308B (it) * | 1986-10-29 | 1989-01-12 | Ansaldo Spa | Schermo termico a nido d ape per scambiatori di calore |
MX173351B (es) * | 1989-06-14 | 1994-02-22 | Carrier Corp | Cabezal para un intercambiador de calor tubo dentro de tubo |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2825463A (en) * | 1954-12-31 | 1958-03-04 | Standard Oil Co | Thermal diffusion apparatus |
US3029796A (en) * | 1959-08-26 | 1962-04-17 | Wallace R Simmons | Sodium-water heat exchanger |
US3132691A (en) * | 1959-02-06 | 1964-05-12 | Babcock & Wilcox Co | Heat exchanger construction and thermal shield therefor |
US3140792A (en) * | 1957-05-28 | 1964-07-14 | Babcock & Wilcox Ltd | Pressure vessel closure member |
DE1205121B (de) * | 1959-05-02 | 1965-11-18 | Scheer & Cie C F | Stehender Waermetauscher |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1225967A (de) * | 1967-03-22 | 1971-03-24 |
-
1968
- 1968-05-30 NL NL6807673A patent/NL6807673A/xx unknown
-
1969
- 1969-05-13 GB GB24368/69A patent/GB1262377A/en not_active Expired
- 1969-05-20 FR FR6916326A patent/FR2009633B1/fr not_active Expired
- 1969-05-21 US US826307A patent/US3630274A/en not_active Expired - Lifetime
- 1969-05-29 DE DE1927388A patent/DE1927388C3/de not_active Expired
- 1969-05-29 BE BE733751D patent/BE733751A/xx unknown
- 1969-05-29 LU LU58745D patent/LU58745A1/xx unknown
- 1969-05-30 JP JP44042400A patent/JPS4833670B1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2825463A (en) * | 1954-12-31 | 1958-03-04 | Standard Oil Co | Thermal diffusion apparatus |
US3140792A (en) * | 1957-05-28 | 1964-07-14 | Babcock & Wilcox Ltd | Pressure vessel closure member |
US3132691A (en) * | 1959-02-06 | 1964-05-12 | Babcock & Wilcox Co | Heat exchanger construction and thermal shield therefor |
DE1205121B (de) * | 1959-05-02 | 1965-11-18 | Scheer & Cie C F | Stehender Waermetauscher |
US3029796A (en) * | 1959-08-26 | 1962-04-17 | Wallace R Simmons | Sodium-water heat exchanger |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4236576A (en) * | 1978-09-14 | 1980-12-02 | Borsig Gmbh | Heat exchangers with tube bundles |
US4418748A (en) * | 1981-02-02 | 1983-12-06 | Commissariat A L'energie Atomique | Heat exchanger whose hot end has a device for protecting the tube plate |
US4537249A (en) * | 1981-02-02 | 1985-08-27 | The United States Of America As Represented By The United States Department Of Energy | Heat flux limiting sleeves |
WO2013164083A1 (de) * | 2012-05-01 | 2013-11-07 | Benteler Automobiltechnik Gmbh | Wärmetauscher mit zuführkanal |
WO2018017773A1 (en) * | 2016-07-19 | 2018-01-25 | Lummus Technology Inc. | Feed effluent heat exchanger |
EA038419B1 (ru) * | 2016-07-19 | 2021-08-26 | Ламмус Текнолоджи Инк. | Теплообменник "входящий/выходящий поток" |
Also Published As
Publication number | Publication date |
---|---|
GB1262377A (en) | 1972-02-02 |
JPS4833670B1 (de) | 1973-10-16 |
BE733751A (de) | 1969-11-03 |
FR2009633A1 (de) | 1970-02-06 |
DE1927388B2 (de) | 1980-01-24 |
NL6807673A (de) | 1969-12-02 |
DE1927388A1 (de) | 1969-12-04 |
LU58745A1 (de) | 1969-09-15 |
FR2009633B1 (de) | 1973-12-21 |
DE1927388C3 (de) | 1980-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST-NA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TEN BEHOEVE VAN NIJVERHEID, HANDEL EN VERKEER;REEL/FRAME:003864/0013 Effective date: 19801222 |