EP1154216B1 - Dampfbeheitzter Flüssigkeitserwärmer - Google Patents
Dampfbeheitzter Flüssigkeitserwärmer Download PDFInfo
- Publication number
- EP1154216B1 EP1154216B1 EP20000109947 EP00109947A EP1154216B1 EP 1154216 B1 EP1154216 B1 EP 1154216B1 EP 20000109947 EP20000109947 EP 20000109947 EP 00109947 A EP00109947 A EP 00109947A EP 1154216 B1 EP1154216 B1 EP 1154216B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- heat exchanger
- heater according
- liquid heater
- container
- 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
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0006—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the plate-like or laminated conduits being enclosed within a pressure vessel
Definitions
- the invention relates to a steam-heated liquid heater with one cuboid-shaped, composed of several profiled plates
- Heat exchanger package with a first group of channels for the saturated or superheated steam and a substantially cross-flow second Group of channels for the heat-absorbing liquid, both the Channels of the first as well as the channels of the second group each on two opposite sides of the heat exchanger package open, and arranged on the other two sides of the heat exchanger package pressure plates are that brace the profile plates arranged between them against each other.
- Such apparatuses for example known from CH-A-296797, are mainly used in power plant operation Liquid preheater used.
- Liquid preheater used in a single, profiled plate composite and in its basic design, for example in EP 0 658 735 B1 described heat exchanger package is the superheated or saturated steam cooled and condensed, the released heat over the profiled Plates are released to the liquid flowing in cross flow, which causes this heats up.
- the thin-walled profiled plates joined by welding are characterized by good heat exchange performance, but stand out This design also has problems in terms of strength, because above all when starting and shutting down the heat exchanger as a result mechanical structure multi-axis stress states can arise both on the prevailing pressure differences, as well as on those from the Strain stresses arising due to temperature differences.
- the expansion stresses arise between the core of the heat exchanger and the housing parts, especially those with regard to the to be recorded Print relatively thick-walled side panels.
- the thermal expansions work especially in the transition zones to the welds due to high local Tensions.
- Welds are not only between the individual Sheets of the heat exchanger package, but also in the area of the edges where So-called corner welds are to be provided to ensure the necessary mechanical To create strength and connectivity for the housing. in addition come material vibrations caused by pressure fluctuations in the media are excited and also lead to high local voltage peaks can. These thermal and mechanical loads must be from Strength association of the heat exchanger are included and lead above all with frequent starting and stopping of the device too early voltage or Vibration fractures. To make matters worse, that outer plates of the heat exchanger package compared to the further inside lying plates due to external cooling different Are exposed to temperature fluctuations.
- the invention has for its object to provide a steam-heated liquid heater, which is characterized by a long service life even with frequent start-up and shutdown.
- a double wall defining a gap is arranged between each pressure plate and the outermost profile plate, and that the gap can be flowed through by a partial flow of the heat-absorbing liquid.
- Preferred embodiments of the steam-heated liquid heater are in the Subclaims 2 to 14 specified.
- the gap between a manifold and a collector extends for the heat absorbing liquid.
- additional, separate connections for feeding and discharging through the double wall coolant flowing through avoided.
- aimed at Structural simplification also helps if the double wall on their one End in the housing of the distributor, and at its other end in the housing of the collector protrudes.
- the heat exchanger package is preferably one with a steam inlet and a container provided with condensate outlet, and the Liquid supply as well as the liquid discharge for the heat absorbing Liquid is sealed through the container wall.
- the distributor and the collector for the heat absorbing Liquid inside the container are also the distributor and the collector for the heat absorbing Liquid inside the container.
- the fatigue strength of a liquid preheater against frequent ones Load changes are not only caused by the voltages in the heat exchanger itself determined, but also by the distance between the heat exchanger and the tank adjusting thermal stresses.
- the mechanical forces that arise here keeping it low is proposed with a preferred embodiment that in With respect to the container, one end of the heat exchanger package is fixed and the other end is arranged with play in the container.
- the end of the heat exchanger package leading into the collector is preferably stationary, the liquid supply line between the container wall and distributor has a longitudinally elastic line section.
- the drawings show a container 1, which consists of a cylindrical Container shell 2, an upper hood 3 and an upper hood 4, a heat exchanger package 5 being arranged in the container 1.
- the hoods 3, 4 are provided with several nozzles.
- D is in the upper hood 3
- the steam can be saturated or superheated steam Act power plant turbine.
- the hoods 3, 4 are also provided in the center with further nozzles, with a liquid feed line 6 for the liquid inlet FE and one Liquid discharge line 7 for the liquid outlet FA.
- a liquid feed line 6 for the liquid inlet FE and one Liquid discharge line 7 for the liquid outlet FA.
- the liquid to be warmed up enters the heat exchanger via the Liquid outlet FA leaves the heated liquid from the heat exchanger.
- the Liquid to be heated therefore flows through the container 1 essentially along its longitudinal axis.
- a heat exchanger package 9 is arranged almost centrally in the container 1. On the lower end of which is connected to the liquid inlet FE Distributor 10, at its upper end with the liquid outlet FA connected collector 11.
- the heat exchanger package 9 is a stack of plates made of profiled, d. H. deformed plates 12.
- the individual plates 12 are designed identically and are each mirror images connected to each other to form a pair of plates. This connection is made to the Longitudinal edges of the plates, with a pair of plates between each single plates forming a wavy channel for one Medium participating in heat exchange, and an essentially tubular one Channel for the other medium participating in the heat exchange results, the both media are essentially cross-flow. Details of the Plate design of such a heat exchanger package are in the European one Patent EP 0 658 735 B1 from the same applicant.
- the liquid to be heated therefore passes from the distributor 10 through the channels formed between the plates and into the collector 11 heated here by the steam conducted in countercurrent.
- the steam arrives via the steam inlet D into the upper hood 3, which initially serves as a distributor, and of which on both sides in the area of the heat exchanger package 9 the arrows 13 recognize that the saturated or superheated steam from two each other opposite sides into the steam channels of the heat exchanger package 9 flows.
- the steam would only enter the one-sided Incoming steam channels of the heat exchanger package, this would become one-sided high temperature load on the inflow side and thus too unfavorable Lead to temperature stresses.
- the profiled plates 12 form an essentially cuboid plate pack, which by external pressure plates 14, which are parallel to the plates 12th extend, is held under a certain bias.
- Preloads are tie rods 15 due to the opposite Pressure plates 14 inserted and tightened under a certain tension.
- Figure 1 shows that the tie rod 15 outside of the profiled by Plates 12 formed cuboids.
- FIGS 1 and 2 also show that not a continuous Printing plate is used, but each printing plate consists of a total of three Plate segments 16 composed.
- the plate segments 16 are by a Parting line 17 running transversely to the longitudinal extent of the heat exchanger package 9 spaced. In this way, the individual plate segments 16 in expand certain limits and compensate for thermal stresses.
- Double wall 18 used for cooling purposes by a partial flow of heat Liquid can flow through.
- one or more times existing inner walls 18a are provided. These are the same size and Shape like the double walls 18, divide the heat exchanger package in two or several modules, are single-walled (not flowed through) and are used for recording the tensile forces in the longitudinal direction due to the internal pressure on the liquid side.
- the Number is determined by the size of the tensile forces (generated by the internal pressure) Longitudinal direction determined
- Figure 4 shows several of the paired profile plates 12, as well the outside pressure plate 14. Between the outermost profile plate 12a and the pressure plate 14 there is a gap 19 delimiting double wall 18 Double wall 18 is in the flow direction of the heat-absorbing liquid considered longer than the profile plates 12 of the heat exchanger package, which is why Double wall 18 protrudes at its lower end 20 into the housing of the distributor 10. Likewise, the double wall 18 projects with its other end into the housing of the Collector.
- the gap 19 between the two individual walls 20a, 20b Double wall 18 is approximately 2 to 5 mm with a thickness of the individual walls 20, 20b of approx. 3 mm. To ensure the thickness of the gap 19 are between the individual walls 20a, 20b extending in the flow direction Spacers 21.
- the spacers 21 are preferably only with the outer, welded to the pressure plate 14 single wall 20a.
- FIG. 5 shows that the heat exchanger package 9 is in the area of FIG. 1 drawn connection edge 22 between the vapor space and the liquid space is provided with wedges 23 which are welded between them in pairs Profile plates 12 protrude.
- the wedges 23 are solidly formed from metal and both with the adjacent profile plates 12 and with the respective partition 24 to Distributor or welded to the collector.
- FIG. 1 finally shows that the heat exchanger package 9 via webs 25th is supported against the inner wall of the container shell 2. This support takes place in the upper area of the heat exchanger package 9 at the level of the collector 11. On the other hand, there is no corresponding rigid connection between Heat exchanger package 9 and tank wall in the lower area of the tank 1. On in this way it is possible for the heat exchanger package 9 to move within the Container and expand in relation to the container. To compensate for the here adjusting length change is the liquid supply line 6 between the formed by the hood 4 container wall and the distributor 10 with a provided flexible, longitudinally elastic line section 26. The Heat exchanger package 9 including manifold 10 and collector 11 is therefore as it were hung in the container 1 and can avoid Extend thermal stress downwards unhindered.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
- Fig. 1:
- Einen Längsschnitt durch einen Flüssigkeitsvorwärmer;
- Fig. 2:
- Einen Längsschnitt durch denselben Flüssigkeitsvorwärmer in einer gegenüber Figur 1 um 90° gedrehten Ansicht;
- Fig. 3:
- Eine Draufschicht auf den Flüssigkeitsvorwärmer nach Fig. 1;
- Fig. 4
- Einen Detailschnitt der in Fig. 2 mit IV bezeichneten Einzelheit und
- Fig. 5:
- Einen Detailschnitt der in Fig. 2 mit V bezeichneten, horizontalen Ebene.
- 1
- Behälter
- 2
- Behältermantel
- 3
- obere Haube
- 4
- untere Haube
- 5
- Wärmetauscherpaket
- 6
- Flüssigkeitszuleitung
- 7
- Flüssigkeitsableitung
- 8
- Standrohr
- 9
- Wärmetauscherpaket
- 10
- Verteiler
- 11
- Sammler
- 12
- Platte
- 12a
- äußerste Platte
- 13
- Pfeil
- 14
- Druckplatte
- 15
- Zuganker
- 16
- Plattensegment
- 17
- Trennfuge
- 18
- Doppelwand
- 18a
- Innenwand
- 19
- Spalt
- 20
- Ende
- 20a
- Einzelwand
- 20b
- Einzelwand
- 21
- Abstandshalter
- 22
- Verbindungskante
- 23
- Keil
- 24
- Trennwand
- 25
- Steg
- 26
- längselastischer Leitungsabschnitt
- D
- Dampfeintritt
- K
- Kondensataustritt
- FE
- Flüssigkeitseintritt
- FA
- Flüssigkeitsaustritt
Claims (14)
- Dampfbeheizter Flüssigkeitserwärmer mit einem aus mehreren profilierten Platten (12) zusammengesetzten, quaderförmigen Wärmetauscherpaket (9) mit einer ersten Gruppe von Kanälen für den gesättigten oder überhitzten Dampf und einer im wesentlichen im Kreuzstrom geführten zweiten Gruppe von Kanälen für die wärmeaufnehmende Flüssigkeit, wobei sowohl die Kanäle der ersten sowie auch die Kanäle der zweiten Gruppe jeweils auf zwei gegenüberliegenden Seiten des Wärmetauscherpakets (9) münden, und an den beiden übrigen Seiten des Wärmetauscherpakets (9) Druckplatten (14) angeordnet sind, die die dazwischen angeordneten Profilplatten (12) gegeneinander verspannen,
dadurch gekennzeichnet, daß zwischen jeder Druckplatte (14) und der jeweils äußersten Profilplatte (12a) eine einen Spalt (19) begrenzende Doppelwand (18) angeordnet ist, und
daß der Spalt (19) durch einen Teilstrom der wärmeaufnehmenden Flüssigkeit durchströmbar ist. - Flüssigkeitserwärmer nach Anspruch 1, dadurch gekennzeichnet, daß sich der Spalt (19) zwischen einem Verteiler (10) und einem Sammler (11) für die wärmeaufnehmende Flüssigkeit erstreckt.
- Flüssigkeitserwärmer nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die Doppelwand (18) an ihrem einen Ende (20) in das Gehäuse des Verteilers (10), und an ihrem anderen Ende in das Gehäuse des Sammlers (11) ragt.
- Flüssigkeitserwärmer nach einem der Ansprüche 1 bis 3, gekennzeichnet durch sich in Durchströmungsrichtung erstreckende Abstandshalter (21) zwischen den Einzelwänden (20a, 20b) der Doppelwand (18).
- Flüssigkeitserwärmer nach Anspruch 4, dadurch gekennzeichnet, daß die Abstandshalter (21) mit einer (20a) der beiden Einzelwände verschweißt sind.
- Flüssigkeitserwärmer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Doppelwand (18) in Durchströmungsrichtung der wärmeaufnehmenden Flüssigkeit betrachtet länger ist, als die Profilplatten (12) des Wärmertauscherpakets (9).
- Flüssigkeitserwärmer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sich die außen an der Doppelwand (18) abgestützte Druckplatte (14) aus mindestens zwei Plattensegmenten (16) zusammensetzt, die durch eine quer zur Längserstreckung des Wärmetauscherpakets (9) verlaufende Trennfuge (17) zueinander beabstandet sind.
- Flüssigkeitserwärmer nach Anspruch 7, dadurch gekennzeichnet, daß sich jede Druckplatte (14) aus insgesamt drei durch Trennfugen (17) unterteilten Plattensegmenten (16) zusammensetzt.
- Flüssigkeitserwärmer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Wärmetauscherpaket (9) in einen mit einem Dampfeintritt (D) und einem Kondensataustritt (K) versehenen Behälter (1) eingesetzt ist, und daß die Flüssigkeitszuleitung (6) sowie die Flüssigkeitableitung (7) für die wärmeaufnehmende Flüssigkeit abgedichtet durch die Behälterwand hindurchgeführt sind.
- Flüssigkeitserwärmer nach Anspruch 9, dadurch gekennzeichnet, daß der Behälter (1) zylindrisch mit zwei Abschlußhauben (3,4) ausgebildet ist und die wärmeuafnehmende Flüssigkeit im wesentlichen in Behälterlängsrichtung durch diesen hindurchgeführt ist, wobei Flüssigkeitszuleitung (6) und -ableitung (7) zentral durch die jeweilige Abschlußhaube (4 bzw. 3) hindurchgeführt sind.
- Flüssigkeitserwärmer nach Anspruch 9 oder Anspruch 10, dadurch gekennzeichnet, daß sich auch der Verteiler (10), sowie der Sammler (11) für die wärmeaufnehmende Flüssigkeit innerhalb des Behälters (1) befinden.
- Flüssigkeitserwärmer nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß in bezug auf den Behälter (1) das eine Ende des Wärmetauscherpakets (9) feststehend, und das andere Ende mit Bewegungsspiel in dem Behälter angeordnet ist.
- Flüssigkeitserwärmer nach Anspruch 12, dadurch gekennzeichnet, daß das in den Sammler (11) führende Ende des Wärmetauscherpakets (9) feststehend ausgebildet ist, und daß die Flüssigkeitszuleitung (6) zwischen Behälterwand und Verteiler (10) einen längselastischen Leitungsabschnitt (26) aufweist.
- Flüssigkeitserwärmer nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das Wärmetauscherpaket (9) im Bereich der Verbindungskante (22) zwischen Dampfraum und Flüssigkeitsraum mit zwischen die einzelnen Profilplatten (12) ragenden Keilen (23) versehen ist, wobei die Keile (23) massiv geformt und sowohl mit den angrenzenden Profilplatten (12), als auch mit der jeweiligen Trennwand (24) zum Verteiler (10) bzw. Sammler (11) verschweißt sind.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50001791T DE50001791D1 (de) | 2000-05-11 | 2000-05-11 | Dampfbeheitzter Flüssigkeitserwärmer |
EP20000109947 EP1154216B1 (de) | 2000-05-11 | 2000-05-11 | Dampfbeheitzter Flüssigkeitserwärmer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20000109947 EP1154216B1 (de) | 2000-05-11 | 2000-05-11 | Dampfbeheitzter Flüssigkeitserwärmer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1154216A1 EP1154216A1 (de) | 2001-11-14 |
EP1154216B1 true EP1154216B1 (de) | 2003-04-16 |
Family
ID=8168672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000109947 Expired - Lifetime EP1154216B1 (de) | 2000-05-11 | 2000-05-11 | Dampfbeheitzter Flüssigkeitserwärmer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1154216B1 (de) |
DE (1) | DE50001791D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150075757A1 (en) * | 2012-04-05 | 2015-03-19 | Alfa Laval Corporate Ab | Plate heat exchanger |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109578806B (zh) * | 2018-12-07 | 2024-01-23 | 江苏中圣压力容器装备制造有限公司 | 一种lng闪蒸汽(bog)增压冷凝回收的工艺装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH296797A (de) * | 1951-11-30 | 1954-02-28 | Tech Studien Ag | Plattenwärmeaustauscher für zwei Gase von erheblichem Druckunterschied. |
DE4343399C2 (de) | 1993-12-18 | 1995-12-14 | Balcke Duerr Ag | Plattenwärmetauscher |
DE19620543C2 (de) * | 1996-04-19 | 2003-11-27 | Apv Thermotech Gmbh | Hybrid-Plattenwärmetauscher |
EP0853224B1 (de) * | 1997-01-15 | 2001-11-07 | Balcke-Dürr Energietechnik GmbH | Wärmeüberträger |
-
2000
- 2000-05-11 DE DE50001791T patent/DE50001791D1/de not_active Expired - Lifetime
- 2000-05-11 EP EP20000109947 patent/EP1154216B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150075757A1 (en) * | 2012-04-05 | 2015-03-19 | Alfa Laval Corporate Ab | Plate heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
DE50001791D1 (de) | 2003-05-22 |
EP1154216A1 (de) | 2001-11-14 |
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