EP0588185B1 - Regenerativ-Wärmetauscher - Google Patents

Regenerativ-Wärmetauscher Download PDF

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Publication number
EP0588185B1
EP0588185B1 EP93114189A EP93114189A EP0588185B1 EP 0588185 B1 EP0588185 B1 EP 0588185B1 EP 93114189 A EP93114189 A EP 93114189A EP 93114189 A EP93114189 A EP 93114189A EP 0588185 B1 EP0588185 B1 EP 0588185B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
rotor
regenerative heat
circumferential
chambers
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
Application number
EP93114189A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0588185A1 (de
Inventor
Gerhard Dipl.-Ing. Kritzler
Siegfried Dipl.-Ing. Schlüter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apparatebau Rothemuehle Brandt and Kritzler GmbH
Original Assignee
Apparatebau Rothemuehle Brandt and Kritzler GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Apparatebau Rothemuehle Brandt and Kritzler GmbH filed Critical Apparatebau Rothemuehle Brandt and Kritzler GmbH
Publication of EP0588185A1 publication Critical patent/EP0588185A1/de
Application granted granted Critical
Publication of EP0588185B1 publication Critical patent/EP0588185B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/047—Sealing means

Definitions

  • the invention relates to a regenerative heat exchanger with a circumferential, radial and Axially sealed storage mass cells having rotor, which is the rotor peripherally enclosing housing formed with sealed peripheral chambers is and the heat exchanger of hot exhaust gas and countercurrent of cold Clean gas or air is flowed through, the rotor a cold and a hot Has end face.
  • the regenerative heat exchanger can be used both for Use air preheaters (Luvos) as well as gas preheaters (Gavos).
  • the exhaust gases are combined in one Regenerative heat exchanger used to preheat the combustion air.
  • the nitrogen oxides (NOx) contained in the exhaust gas be largely reduced by in this case the storage masses of the Regenerative air preheater in whole or in part as catalytically active elements are executed and especially ammonia is added as a reducing agent.
  • the NOx-containing flue gas is the flue gas from a furnace, which at the end of a Steam generator for preheating the combustion air Flow through regenerative heat exchanger.
  • a regenerative heat exchanger of the type mentioned is through FR-A-1 447,765 became known.
  • To seal the peripheral chambers are there numerous sealing blocks strung together to form sealing rings.
  • the sealing blocks are suspended in this overlapping U-shaped housing required, in which the sealing blocks are fixed in the upright position with bolts are; the sealing blocks lie against the rotor with their narrow surfaces, and to To increase the sealing, it is necessary to use a kind in the narrow areas Incorporate the labyrinth seal in the form of throats or grooves. The effort for that Manufacture and assembly of the seal is extremely large, without sacrificing the to achieve the desired degree of tightness.
  • the invention is therefore based on the object of a device to create that in a regenerative heat exchanger of the type mentioned allow a high degree of tightness and largely avoid leaks.
  • peripheral chambers with on the cold and hot end face on the outer circumference of the rotor in the rotor housing arranged, stationary flat, ring-like peripheral seals against the rotor are sealed, and that, the inner diameter of the peripheral seals bridging, radially between the heat-exchanging media on both sides of the rotor stationary flat radial seals are arranged, the circumferential and the Radial seals in a common plane, at the joints form a continuous, continuous sealing surface and be pressed elastically onto the rotor are.
  • An embodiment of the invention provides that the peripheral chambers are divided, i.e. with a regenerative heat exchanger vertical axis of rotation an upper and a lower or at one Regenerative heat exchanger with a horizontal axis of rotation have rear and a front chamber.
  • the area of the two Chambers are cylindrical seals around the rotor for subdivision placed.
  • the subdivided circumferential chambers advantageously allow Way an operation of the regenerative heat exchanger in which targeted and appropriate to the given location in the heat exchanger Pressure conditions at the respective sealing points can be suctioned, blocked, blown out or sucked out. A however, this mode of operation is also not used for subdivision Circumferential chambers possible.
  • the double seals achieved radially according to the invention allow this advantageously, either a suction to the barrier chambers, e.g. connect a fan or a sealing gas line and to create either a negative or positive pressure, as well to connect a purge gas line to the radial chambers. That offers the possibility of gap leaks in regenerative heat exchangers simple way to avoid partially or completely, e.g. by extraction or supply of sealing gas. Furthermore can wear through the radial areas in question Blow out can be minimized. Eventually, with every flush additionally achieved that each storage mass cell or chamber from polluted raw gas sector coming in the radial Double seal is flushed out with clean gas before entering the Clean gas sector enters.
  • All rotor seals can be made with mechanical devices to the respective operating conditions Close the rotor end faces tightly.
  • the adjustments can be made by hand or be carried out automatically; larger ones can be used Areas of the peripheral seals, the radians of which are at least that Arc length of two storage mass chambers should correspond to from individual actuation points.
  • Leave to operate use levers that move from the actuation points to the individual connection points on the seals are sufficient.
  • the number the actuators can be reduced in this way. So that the actuation and pressure forces of the seals as possible are low, the weights of the sealing plates or rings Counterweights balanced over the existing lever linkage. Compared to pitch springs, counterweights have the advantage that the Reactive forces even with different sealing positions remain constant.
  • the regenerative heat exchanger 1 according to FIG. 1 has one by one vertical axis of rotation 2 rotating rotor 3, the numerous storage mass cells or chambers 4 (see FIG. 2).
  • the regenerative heat exchanger 1 is according to arrow direction 5, i.e. from top to top below from hot, from a steam generator, not shown Exhaust gas flows through a channel, while in counterflow according to arrow direction 6 clean gas or air, the heated by the exhaust gas Storage mass chambers 4 is supplied.
  • the clean gas or the air cools the storage mass chambers 4 and flows upwards, i.e. on the hot side 7 out of the heat exchanger 1.
  • Circumferential seals 9 placed, which are divided into segments and have an arc length 11 which is a multiple of the arc length correspond to a storage mass chamber 4 (cf. FIG. 2); in the in 2, the circumferential seals 9 consist four quarter-circle rings closely joined together at the joints.
  • the peripheral seals 9 create in the area between the the rotor 3 axially enclosing housing 12 and the rotor 3 locking or circumferential chambers 13.
  • the two media streams 5 and 6 are separated from one another separating separation zones 14 radial chambers 15 (see FIG. 1) formed, by radial seals 16 in each of these zones above and below are placed on the rotor 3; the radial seals 16 are in essentially strip-shaped, with widening ends and dimensioned so that they completely cover a storage mass chamber 4. In this way, they are the regenerative heat exchanger 1 media 5 or 6 flowing through in countercurrent on each end face of the rotor, i.e. both on the hot and on the cold side 7 or 8 completely sealed in itself; in the heat exchanger are in the radial Extension of the rotor 3 thus double seals.
  • the radial seals 16 are dimensioned so that they - the diameter of the Bridging circumferential seals 9 - fit into the circumferential seals 9 to let. All due to the circumferential seals 9 and Radial seals 16 resulting sealing surfaces lie in one plane, i.e. there is no offset between them; also own they have no penetrations of drive and other actuating elements.
  • the peripheral seals 9 and the radial seals 16 are elastic, i.e. resiliently adjusted or pressed against the rotor.
  • both for the circumferential seals 9 are also called several operating points on the cold side 7 and 8 of the rotor 3 17 for manual or fully automatic operation available; each a larger area of the peripheral seals 9 is assigned an actuation point 17, from which lever 18 extend to the seals. This makes it possible for a few Operating points 17 from the entire circumferential seals 9 so far to influence as necessary.
  • Radial chambers 15 adjusting springs 19 see. Fig. 1) arranged.
  • the peripheral chambers 13 by a placed around the jacket of the rotor 3 Ring seal 21 in an upper and a lower chamber 13a, 13b divided.
  • the peripheral chambers 13 and 13a, 13b and the radial chambers 15 can namely together or separately via a separate Extract the fan and keep it at a negative pressure, or in Conversely, apply sealing gas or purge gas and open it bring an overpressure.
  • a regenerative heat exchanger 100 is a leakage suction for the barrier chamber and sealing system shown in more detail; it consists of pipe connections 24, 25, via which a fan, not shown, in the direction of arrow 26 Leaks from the circumferential chamber, which is not subdivided in this case 13 and the lower radial chamber 15 sucks.
  • the regenerative heat exchanger 200 shown in FIG. 4 differentiates differs essentially from the embodiment according to FIG. 3 in that the pipe connections 24 and 25 in reverse Direction, i.e. according to the arrows 27 sealing or purge gas in the Circumferential chamber 13 or radial chamber 15 is introduced. Furthermore a pipe 28 is connected to the upper radial chamber 15, through which the introduced sealing or purge gas after Flow through the barrier chamber and sealing system again to the outside can leak.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Supply (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Power Steering Mechanism (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Polarising Elements (AREA)
  • Vending Machines For Individual Products (AREA)
  • Air Bags (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP93114189A 1992-09-09 1993-09-04 Regenerativ-Wärmetauscher Expired - Lifetime EP0588185B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4230133 1992-09-09
DE4230133A DE4230133A1 (de) 1992-09-09 1992-09-09 Regenerativ-Wärmetauscher und Verfahren zum Betreiben des Wärmetauschers

Publications (2)

Publication Number Publication Date
EP0588185A1 EP0588185A1 (de) 1994-03-23
EP0588185B1 true EP0588185B1 (de) 1998-01-07

Family

ID=6467590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114189A Expired - Lifetime EP0588185B1 (de) 1992-09-09 1993-09-04 Regenerativ-Wärmetauscher

Country Status (15)

Country Link
EP (1) EP0588185B1 (pt)
JP (1) JPH0712477A (pt)
AT (1) ATE161942T1 (pt)
AU (1) AU667385B2 (pt)
BR (1) BR9303726A (pt)
CZ (1) CZ291069B6 (pt)
DE (2) DE4230133A1 (pt)
DK (1) DK0588185T3 (pt)
ES (1) ES2113457T3 (pt)
HU (1) HUT65211A (pt)
MX (1) MX9305497A (pt)
PL (2) PL56220Y1 (pt)
RU (1) RU2119127C1 (pt)
UA (1) UA35561C2 (pt)
ZA (1) ZA936296B (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5915340A (en) * 1996-10-02 1999-06-29 Abb Air Preheater Inc. Variable sector plate quad sector air preheater
JP3611272B2 (ja) * 1997-12-19 2005-01-19 三菱重工業株式会社 回転再生式熱交換器
DE10327078A1 (de) * 2003-06-13 2004-12-30 Klingenburg Gmbh Rotationswärmeaustauscher und Verfahren zur Abdichtung eines solchen
GB2424471A (en) * 2005-03-22 2006-09-27 Howden Power Ltd Rotary heat exchanger with a sector plate featuring suction ducts
DE102005053378B4 (de) * 2005-11-07 2011-12-08 Rwe Power Ag Rotierender regenerativer Luft-oder Gasvorwärmer
US8517086B2 (en) * 2008-02-29 2013-08-27 Caterpillar Inc. Composite heat exchanger end structure
RS51967B (en) * 2008-10-14 2012-02-29 BALCKE DÜRR GmbH. REGENERATIVE HEAT EXCHANGER WITH INNOVATIVE ROUND SEAL
SI2199724T1 (sl) 2008-12-17 2012-12-31 Balcke-Durr Gmbh Postopek za delovanje regenerativnega prenosnika toplote in regenerativni prenosnik toplote z izboljšanim izkoristkom
CN102200408B (zh) * 2011-07-09 2012-11-07 程爱平 回转式气气换热器无泄漏密封系统隔离风幕结构
EP2743624A1 (en) * 2012-12-14 2014-06-18 Alstom Technology Ltd Leakage reduction system in power plant operations
ES2450041B1 (es) * 2013-11-18 2015-02-11 Juan MARTÍNEZ-VAL PIERA Sellado de huelgo por recirculación parcial de fluido en intercambiador rotativo de calor
DE102016011918B4 (de) * 2016-10-05 2018-05-30 Balcke-Dürr GmbH Regenerativer Wärmetauscher
RU2716639C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Высокотемпературный вращающийся дисковый теплообменник
RU2716636C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Способ компенсации деформации высокотемпературного вращающегося дискового теплообменника
RU2716640C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Силиконовые уплотнения высокотемпературного вращающегося дискового теплообменника
RU2716638C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Способ предотвращения деформации высокотемпературного вращающегося дискового теплообменника
RU202881U1 (ru) * 2020-08-11 2021-03-11 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Устройство охлаждения каркаса роторного дискового теплообменника энергетической установки

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681209A (en) * 1949-02-09 1954-06-15 Jarvis C Marble Suction device for rotary regenerative preheaters
US2665120A (en) * 1950-08-09 1954-01-05 Blomquist Uno Olof Regenerative heat exchanger
BE522549A (pt) * 1952-09-06
FR1168896A (fr) * 1956-03-15 1958-12-18 Babcock & Wilcox France Réchauffeur rotatif pour gaz, air et analogues
DE1093392B (de) * 1957-01-31 1960-11-24 Kraftanlagen Ag Regenerativ-Waermeaustauscher mit Schleusgas-Rueckfuehrung
FR1402853A (fr) * 1962-11-23 1965-06-18 Svenska Rotor Maskiner Ab échangeur régénérateur de chaleur rotatif
DE1266435B (de) * 1963-04-01 1968-04-18 Kraftanlagen Ag Rauchgasbeheizter umlaufender Regenerativ-Luftvorwaermer mit Reinigungsvorrichtung
FR1447765A (fr) * 1965-09-23 1966-07-29 Podolsky Mashinostroitelny Zd Dispositif d'étanchéité du rotor des réchauffeurs d'air à régénération
US3822739A (en) * 1973-02-02 1974-07-09 Air Preheater Multi-directional seal biasing means
US4044822A (en) * 1976-01-08 1977-08-30 The Air Preheater Company, Inc. Horizontal modular inter-gasket seal
DE2809948C3 (de) * 1978-03-08 1984-09-20 Kraftanlagen Ag, 6900 Heidelberg Nachstellvorrichtung für die Abdichtung umlaufender Regenerativ-Wärmetauscher
DE3437945A1 (de) * 1984-10-17 1986-04-17 Kraftanlagen Ag, 6900 Heidelberg Verfahren und einrichtung fuer ein unterbinden des uebertritts von leckgasstroemen aus dem sektor des waermetauschenden gasstromes hoeheren druckes in denjenigen niedrigeren druckes in umlaufenden regenerativ-waermetauschern mit relativ zu den anschlusskanaelen bewegter speichermasse

Also Published As

Publication number Publication date
DE4230133A1 (de) 1994-03-10
CZ186493A3 (en) 1994-04-13
DE59307922D1 (de) 1998-02-12
CZ291069B6 (cs) 2002-12-11
DK0588185T3 (da) 1998-09-07
ES2113457T3 (es) 1998-05-01
MX9305497A (es) 1994-05-31
ATE161942T1 (de) 1998-01-15
PL56220Y1 (en) 1998-07-31
PL300234A1 (en) 1994-03-21
HU9302529D0 (en) 1994-01-28
BR9303726A (pt) 1994-03-22
RU2119127C1 (ru) 1998-09-20
AU667385B2 (en) 1996-03-21
UA35561C2 (uk) 2001-04-16
EP0588185A1 (de) 1994-03-23
HUT65211A (en) 1994-05-02
AU4463193A (en) 1994-03-17
JPH0712477A (ja) 1995-01-17
ZA936296B (en) 1995-02-09

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