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WO1994001730A1 - Echangeur de chaleur a recuperation - Google Patents

Echangeur de chaleur a recuperation Download PDF

Info

Publication number
WO1994001730A1
WO1994001730A1 PCT/DK1993/000228 DK9300228W WO9401730A1 WO 1994001730 A1 WO1994001730 A1 WO 1994001730A1 DK 9300228 W DK9300228 W DK 9300228W WO 9401730 A1 WO9401730 A1 WO 9401730A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
slide shoe
heat exchanger
radial sealing
sealing device
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.)
Ceased
Application number
PCT/DK1993/000228
Other languages
English (en)
Inventor
Bjarne Nygaard Madsen
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.)
Burmeister and Wain Energy AS
Original Assignee
Burmeister and Wain Energy AS
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 Burmeister and Wain Energy AS filed Critical Burmeister and Wain Energy AS
Priority to DE69300967T priority Critical patent/DE69300967T2/de
Priority to EP93914650A priority patent/EP0601167B1/fr
Priority to PL93302676A priority patent/PL171829B1/pl
Publication of WO1994001730A1 publication Critical patent/WO1994001730A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 renegerative heat ex ⁇ changer comprising a heat exchanger matrix in form of a ro- tor having at each end a smooth, axial face at the peri ⁇ phery, and at each end a radial sealing device which by means of a counterweight over a link connection is kept against the rotor, as well as a spacing device for cr trol ⁇ ling the axial distance between the radial sealing dt.ice and the rotor.
  • the object of the invention is to provide a regenera ⁇ tive heat exchanger, in which the size of the gap is controlled in a simple way without the occurence of the drawbacks described above.
  • the spacing means comprising a slide shoe of carbon which pro ⁇ trudes from the radial sealing and bears against the smooth axial face of the rotor, and by the protrusion of the slide shoe being adjustable relative to the housing.
  • the desired gap size can be determined. This gap size will be maintained irrespecti ⁇ vely of possible changes in the geometry of the rotor due to temperature changes in the gases flowing through the rotor, as long as the counterweight keeps the slide shoe against the smooth axial face of the rotor.
  • the slide shoe is during operation fixed against turning relative to the rotor.
  • a better adaptation of the slide shoe to the smooth face of the rotor is attained, which results in reduced friction and reduced wear.
  • a second embodiment of the heat exchanger according to the invention is characteristic in that the force, by which a slide shoe is urged against the smooth face of the rotor is less than 50 kg.
  • the force, by which the slide shoe is urged towards the rotor is to be of a size sufficient to ensure a permanent bearing of the slide shoe against the ro- tor irrespective of the variations of the geometry of the rotor caused by temperature variations.
  • a third embodiment of the regenerative heat exchanger according to the invention is characteristic in that the spacing device comprises a housing mounted on the face of the radial sealing device opposite the axial face of the ro ⁇ tor, that the radial sealing device is provided with an opening, through which the slide shoe protrudes, that the slide shoe is mounted at one end of a spindle which is axially movable in the housing and which at its other end has a thread engaging a corresponding thread in the housing, and in that the threaded end of the spindle is adapted to engage an adjustment tool and is provided with a thread for a counternut for locking the position of the spindle.
  • the gap is adjusted manually by screwing the spindle with the slide shoe more or less for ⁇ ward towards the smooth axial face of the rotor, after which the spindle is locked by means of a counternut. It will then normally only be necessary, after a longer operation period, to make a manual readjustment on account of wear of the slide shoe.
  • the need for electric or electromagnetic con ⁇ trolling devices, cables, signal devices, etc. therefore does not exist, the result being lower production and main- tenance costs of the heat exchanger.
  • Fig. 1 shows somewhat schematically a section in a plane parallel with the rotor axis in a regenerative heat exchanger according to the invention
  • Fig. 2 is a plan view of the arrangement shown in Fig. 1, and
  • Fig. 3 is a detailed section of the spacing device shown in Figs. 1 and 2.
  • Fig. 1 shows a heat exchanger matrix 1 in form of a rotor. For the sake of clarity only the areas at the end fa ⁇ ces of the rotor are shown.
  • a radial sealing device 2 is pro- vided which at the centre is supported in a manner not shown in detail and which at each end rests on a supporting arm 3 engaging a slot 4 in the end of the radial, sealing device.
  • the supporting arm 3 is connected to a horizontal shaft 5 mounted on a supporting beam 6 which is a part of the sup- porting construction of the heat exchanger and which in a manner not shown in detail also carries the upper bearing of the rotor.
  • the supporting arm 3 is connected with a rod 7, in which a shroud screw 8 is inserted in such a way that the length of the rod 7 is adjustable.
  • the upper end 7 of the rod is pivotally connected with the one end of a lever arm 9, the other end of which carries a counterweight 10.
  • the lever arm 9 pivots about a shaft 11 supported by bearing brackets 12.
  • a similar arrange ⁇ ment is provided, viz. a radial sealing device 15, the end of which is carrying a supporting arm 16 which is in enga- gement with a slot 17 in the radial sealing device 15 and which is pivotable about a shaft 18.
  • the supporting arm 16 is connected with the lower end of a rod 20, the length of which is adjustable in the same way as described in respect of the rod 7.
  • the rod 20 is at its upper end connected to one end of a lever arm 22, the other end of which carries a counterweight 23.
  • the lever arm 22 pivots about a shaft 11 supported by bearing brackets 12.
  • Each radial sealing device is at its free ends pro ⁇ vided with a spacing device 24 which will be described in detail in the following with reference to Fig. 3.
  • the spacing device 24 comprises a tubular housing 25, which at one end has a flange 26 fastened by means of pin bolts 27 to the side of the radial sealing device 2 opposite the rotor 2.
  • a di ⁇ placeable spindle 28 is arranged, said spindle carrying at one end a thread 29 en ⁇ gaging a corresponding thread in the housing 25.
  • the spindle has at its free ends a spigot 30 with faces for a spanner.
  • the other end of the spindle carries a bottom plate 32, in which a slide shoe 33 of carbon is fixed against ro- tation by means of a retaining screw 34.
  • the slide shoe 33 protruding from the housing through an opening 38 in the ra ⁇ dial sealing device is shown bearing against the smooth axial face 13 of the rotor which is here constituted by one of the flanges of an angle bar 36 connected to the periphery of the rotor.
  • the gap 37 between the radial sealing device 2 and the rotor face 13 may be set at a desired value.
  • the associated counterweight 10 and the rod 7 are adjusted in such a way that it is ensured that the slide shoe during operation always bears against the face 13 irrespective of whether during operation of the heat ex- changer deformations of the geometry of the rotor occur due to variatons of the operation temperature of the rotor.
  • a cylindrical bellows 41 is provided as sealing element between the housing 25 and the supporting beam 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Sealing Devices (AREA)
  • Power Steering Mechanism (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Braking Arrangements (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air Supply (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Echangeur de chaleur (1) possédant un rotor (1) doté d'éléments radiaux d'étanchéité (2, 15) serrés contre le rotor par des contre-poids (10, 23) sur des éléments de liaison. Un dispositif écarteur (24) comporte une broche réglable portant un patin en carbone (33) destiné à glisser sur une face lisse (13) du rotor, de façon à délimiter l'espace compris entre l'élément radial d'étanchéité et le rotor.
PCT/DK1993/000228 1992-07-07 1993-07-06 Echangeur de chaleur a recuperation Ceased WO1994001730A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69300967T DE69300967T2 (de) 1992-07-07 1993-07-06 Regenerativer wärmetauscher.
EP93914650A EP0601167B1 (fr) 1992-07-07 1993-07-06 Echangeur de chaleur a recuperation
PL93302676A PL171829B1 (en) 1992-07-07 1993-07-06 Regenerative heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0892/92 1992-07-07
DK089292A DK168649B1 (da) 1992-07-07 1992-07-07 Regenerativ varmeveksler

Publications (1)

Publication Number Publication Date
WO1994001730A1 true WO1994001730A1 (fr) 1994-01-20

Family

ID=8098719

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1993/000228 Ceased WO1994001730A1 (fr) 1992-07-07 1993-07-06 Echangeur de chaleur a recuperation

Country Status (7)

Country Link
EP (1) EP0601167B1 (fr)
AT (1) ATE131280T1 (fr)
DE (1) DE69300967T2 (fr)
DK (1) DK168649B1 (fr)
ES (1) ES2080623T3 (fr)
PL (1) PL171829B1 (fr)
WO (1) WO1994001730A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996024813A1 (fr) * 1995-02-10 1996-08-15 Ljungström Technology Ab Echangeur thermique rotatif a regeneration et procede d'exploitation d'un echangeur thermique rotatif a regeneration
WO1996024812A1 (fr) * 1995-02-10 1996-08-15 Ljungström Technology Ab Echangeur thermique a regeneration et procede d'exploitation d'un echangeur thermique a regeneration
WO1996026407A1 (fr) * 1995-02-24 1996-08-29 Ljungström Technology Ab Echangeur de chaleur rotatif a regeneration et son mode d'utilisation
WO1996041996A1 (fr) * 1995-06-08 1996-12-27 Ljungström Technology Ab Echangeur thermique rotatif a regeneration
US5845700A (en) * 1996-10-31 1998-12-08 Ljungstrom Technology Ab Rotary regenerative heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015568B (de) * 1956-02-27 1957-09-12 Kraftanlagen Ag Umlaufender Regenerativ-Vorwaermer mit Abdichtplatten
DE1035843B (de) * 1956-04-12 1958-08-07 Kraftanlagen Ag Umlaufender Regenerativ-Vorwaermer mit beweglichen Sektorplatten und Waelzkoerpern
DE1133850B (de) * 1961-02-21 1962-07-26 Kraftanlagen Ag Nachstellvorrichtung fuer die Sektorenplatten bei umlaufenden Regenerativ-Vorwaermern
US3246686A (en) * 1962-03-05 1966-04-19 Svenska Rotor Maskiner Ab Regenerative preheater including heat transfer mass and floating sealing plates
US3939903A (en) * 1972-11-20 1976-02-24 Nissan Motor Co., Ltd. Seal assembly for a rotary regenerative heat exchanger
US4024907A (en) * 1976-01-08 1977-05-24 The Air Preheater Company, Inc. Sealing plate support

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015568B (de) * 1956-02-27 1957-09-12 Kraftanlagen Ag Umlaufender Regenerativ-Vorwaermer mit Abdichtplatten
DE1035843B (de) * 1956-04-12 1958-08-07 Kraftanlagen Ag Umlaufender Regenerativ-Vorwaermer mit beweglichen Sektorplatten und Waelzkoerpern
DE1133850B (de) * 1961-02-21 1962-07-26 Kraftanlagen Ag Nachstellvorrichtung fuer die Sektorenplatten bei umlaufenden Regenerativ-Vorwaermern
US3246686A (en) * 1962-03-05 1966-04-19 Svenska Rotor Maskiner Ab Regenerative preheater including heat transfer mass and floating sealing plates
US3939903A (en) * 1972-11-20 1976-02-24 Nissan Motor Co., Ltd. Seal assembly for a rotary regenerative heat exchanger
US4024907A (en) * 1976-01-08 1977-05-24 The Air Preheater Company, Inc. Sealing plate support

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996024813A1 (fr) * 1995-02-10 1996-08-15 Ljungström Technology Ab Echangeur thermique rotatif a regeneration et procede d'exploitation d'un echangeur thermique rotatif a regeneration
WO1996024812A1 (fr) * 1995-02-10 1996-08-15 Ljungström Technology Ab Echangeur thermique a regeneration et procede d'exploitation d'un echangeur thermique a regeneration
WO1996026407A1 (fr) * 1995-02-24 1996-08-29 Ljungström Technology Ab Echangeur de chaleur rotatif a regeneration et son mode d'utilisation
WO1996041996A1 (fr) * 1995-06-08 1996-12-27 Ljungström Technology Ab Echangeur thermique rotatif a regeneration
EA000246B1 (ru) * 1995-06-08 1999-02-25 Свенска Ротор Маскинер Аб Вращающийся регенеративный теплообменник
US5845700A (en) * 1996-10-31 1998-12-08 Ljungstrom Technology Ab Rotary regenerative heat exchanger

Also Published As

Publication number Publication date
ES2080623T3 (es) 1996-02-01
DE69300967T2 (de) 1996-08-29
DK89292D0 (da) 1992-07-07
ATE131280T1 (de) 1995-12-15
DK168649B1 (da) 1994-05-09
PL302676A1 (en) 1994-08-08
DK89292A (da) 1994-01-08
EP0601167A1 (fr) 1994-06-15
EP0601167B1 (fr) 1995-12-06
DE69300967D1 (de) 1996-01-18
PL171829B1 (en) 1997-06-30

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