OA6423A - Rotary heat exchanger with recovery. - Google Patents

Rotary heat exchanger with recovery. Download PDF


Publication number
OA6423A OA56983A OA56983A OA6423A OA 6423 A OA6423 A OA 6423A OA 56983 A OA56983 A OA 56983A OA 56983 A OA56983 A OA 56983A OA 6423 A OA6423 A OA 6423A
Prior art keywords
Prior art date
Application number
Other languages
French (fr)
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OA06423A (en
Harlan E Finnemore
Roderic J Baker
Original Assignee
Svenska Rotor Maskiner Aktlenb
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
Priority to US05/973,217 priority Critical patent/US4206803A/en
Application filed by Svenska Rotor Maskiner Aktlenb filed Critical Svenska Rotor Maskiner Aktlenb
Publication of OA06423A publication Critical patent/OA06423A/en
Publication of OA6423A publication Critical patent/OA6423A/en



    • F28D19/00Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04Regenerative 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
    • F28D19/047Sealing means
    • Y10S165/00Heat exchange
    • Y10S165/009Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013Movable heat storage mass with enclosure
    • Y10S165/016Rotary storage mass


Rotary regenerative heat exchange apparatus in which a rotor of heat absorbent material is alternately exposed to a heating fluid and to a fluid to be heated. The rotor is surrounded by a housing having a sector plate at opposite ends thereof adapted to separate the heating fluid from the fluid to be heated. The apparatus is provided with control means that intermittently drives a sector plate into a sealing relationship with the adjacent edge of the rotor after which a predetermined reference point on the rotor activates a sensor to move the sector plate away from the rotor to permit freedom of movement therebetween.



The present invention provides a regenerative rotary heat exchanger in which a cylindrical mass of exchange material is conveyed by a rotor around the central shaft of the latter, which is driven by slowly rotating axle or axle so that alternately opposite sides 5 ". The rotor is in contact with currents of a heating fluid and a fluid to be heated.

When the opposite sides of the rotor are subjected to extreme temperatures, the rotor is subjected to a difference in expansion which causes it to deformed and thus alters the tightness to be maintained between the rotor and the rotor. who surrounds him.

Because, usually .. 1rs 1 - cask..introduced into the rotor from the top while read gay. They are introduced from below, the yellow bag part of the ret? κεdilate more than its lower part which nrotv · ior..e the u-not upturned shallow bowl, phenomenon -, a ;. to what is commonly called the "borabemono.i rotor.

The bulging of the rotor produces a. made excessively at the upper or hot end of this rotor <Its con-sequence, we developed different agenco-ruis to create sealing structures allowing a bomber ai rotortout by satisfactorily preventing the fu-H ? - ··; ό ·· $ different fluids. In the prior art, this method is used in the prior art. pxear · appliances that have been developed to retain fluids in heat exchangers subject to thermal deformation. In U.S. Patents 3,246,687, U &amp; 3,786,868, there is described a system in which u ?? plate * sector is moved according to the bouheooui. It has been said in US Pat. Nos. 3,033,518 and 3,095,036 that a sealing device is used to seal an opening formed by a bulge of the rotor.

As a result, it is common practice to provide different sealing devices to the rotor seals to prevent cross-flow of fluids therethrough. A new solution had problem of

The sealing has been proposed by US Pat. No. 4,124,063, in which a sector plate placed at the rotor emitter is deformed in a curvilinear profile, which is recessed at the bottom of the face. adjacent rotor. The invention relates to a device for securing the bulge of the rotor and for controlling the bending of an adjacent sector plate. More particularly, the invention relates to a device for detecting the buildup of a motor and for transforming a resulting signal into a force that produces a similar deformation of an adjacent utility to minimize the flow of fluid in said intermediate zone. Other advantages and features of the invention will be demonstrated in the following description, given by way of non-limiting example, in the attached drawings in which:

Fig. 1 is a side elevational view of a recovery rotary heat exchanger which is arranged according to the invention;

Fig. 2 is an enlarged detail view showing the features of the invention.

Fig. 3 is an enlarged side view of the detection and control device according to the invention.

Fig. 4 is a side view on an enlarged scale, partially broken away, showing the following device.) Figure 4-4 of FIG.

Fig. 5 is an enlarged scale detail view showing a bumper provided on a T-bar; and

Fig. 6 is a schematic representation of a recovery rotary heat exchanger which is affected by a bulge of the rotor. The heat exchanger comprises a rotoi 'provided with a barrel 12 and a concentric shell 14 delimiting a vo-lume intermediate which is filled with a mass of heat-absorbing material 16 which is' carried by the rotor and which is driven slowly in rotation about its axis by a driver and a drive mechanism 18 so as to be able to absorb heat contained in a heating fluid and to leach to a fluid to be heated, the fluids flowing in their respective passages.

Hot gas or other heating medium enters the heat exchanger through an inlet conduit 20 and thereafter emerges from an outlet conduit 22 after traversing the heat absorbing material 16 which is placed in an intermediate position . Cold air or other fluid to be heated enters the heat exchanger via an inlet pipe 23 and is discharged through an outlet conduit 25 after having passed over the heated mass 16. When passing through the heated mass, the cold air absorbs the heat contained in it and is then channeled to its place of use.

A cylindrical housing 28 surrounds the rotor so as to form with it an annular gap 30; Recessed end plates 19 are located at opposite ends of the housing to direct hot gas and air therethrough. Sector plates 34 are placed between the opposite opposite ends of the rotor and the end plates in order to maintain the different fluids in their respective passages, while radial sealing devices 32 are provided which are fixed on the end edges of the rotor which are arranged to rub against the face of the adjacent sector plate to prevent leakage of fluid into the intermediate gap.

In most heat exchangers, the gas enters from the top, yielding its heat to the heat absorbing material contained in the rotor, before discharging through line 22 as a cooled gas. Reverse cold air enters through the lower inlet duct 23 and exits through an outlet duct 25 after passing through the relatively hot rotor. Since the gas inlet and the hot air outlet are usually placed at the top of the heat exchanger, this upper part is called the "hot end" while the part adjacent to the air inlet The cold end is referred to as the "cold end" of the rotor, so the upper end of the rotor is subject to maximum thermal expansion, while the lower or lower end is subject to less expansion as indicated in FIG. The schematic representation of FIG. 6.11 results from this thermal deformation of the rotor, an increase in the clearance between the top of the rotor and the surrounding casing structure, which substantially increases the fluid leakage in this zone and which decreases the efficiency of the casing. A fixed carrier bearing 36 provided at the lower portion of the rotor supports the central shaft 12 so that it rotates about its axis while the upper end The durotor base supports a radial guide bearing 38 which evenly supports the inner end of each sector plate at a height which is related to the axial expansion and con traction of the rotor shaft.

According to US Pat. No. 4,124,063, there is provided a device for producing a curvilinear deformation of the sector plate until it corresponds to the profane bulging of the rotor, in order to minimize leakage. fluid between the rotor and the housing that surrounds it. The present invention relates to a particular device for detecting and actuating the execution of this operation.

An annular bar 42 of T-shaped cross-section is attached to an outer corner of the rotor 14. This T-bar carries a reinforced bumper 44 which serves as a point of contact of the rotor when it is rotated around it. 30 of its axis. A tube 48 contains a sensor rod 46 which has a reinforced end which is arranged to contact the stopper 44 of the T-bar 42 when the robot is rotated about its axis. "

The tube 48 which surrounds the sensor rod 46 with axis 35 is fixed on the sector plate 34 by a perpendicular 52 / perpendicular to a radius of the rotor. It can move freely in an opening 54 formed in a plate. 6423 5 mite 19 in order to move relative thereto.

In addition, the sensor rod 46 is essentially independent of the surrounding tube 48. The upper end of the sensor rod 56 carries a crossbar / on the opposite ends of which are fixed contact pads 58A and 58B. The contact points are mounted on screws so that they can be adjusted vertically by rotating these screws and they can be locked in any position by tightening nuts 60 to establish a predetermined relationship with contactors 62A and 62B.

The contact pads 58A and 58B are adjusted to cut the contact with the contactors 62A and 62B in response to a predetermined degree of vertical movement of the rod 46.

One contactor is called the primary contactor while the other is called the secondary or "backup" contactor.

The contactors control a motor and transmission device 64 which reversibly drives an actuating rod 66. This actuating rod 66 is connected to the mains plate 34 by a pivot 67 in such a way that then selectively be raised or lowered in relation to its actuation. A conventional timer 68 allows control of the movement of the motor 64 in relation to a predetermined operation sequence, although this sequence may be modified by a signal provided by the switch 62 under the effect of axial movement of the rod 46. .

For example, once per hour (or with another staggering period), the timer 68 may engage the motor 64 to lower the actuator rod 66 until a contact is made. is established between the rod 46 and the stopper 44 of the T-bar 42. During the contact, the control unit 46 moves the block 58A away from the contactor 62A, which controls the drive motor 64 in the same way it actuates in the opposite direction the mains-plate to distance it a short distance from the radia-le seals in order to establish a freedom of movement between them. The optimum reverse movement of the mains plate is usually limited to a value between 3 and 6 mm. J 6423 6

In normal operation, the timer 68 is programmed to actuate the motor 64 to descend the bar 66 after each hour or other predetermined period of time. When the mains plate goes down, it carries with it the detection rod 46 so that finally it comes into contact with the stopper 44 of the T 42. A complementary movement of descent of the plate-sector in the axial direction makes it move the tie 46 and the stirrup upwards so as to move the contact stud 3A 58A from the contactor 62A. The latter then commands the engine in reverse so that it moves the sector plate 3 mm (or another predetermined distance).

The timer 68 is set to repeat this operation every hour. As a result, as the bulge of the rotor increases, reverses, or stabilizes, the sector plate is periodically deformed to assume a configuration similar to that of the end of the rotor.

When the bulge of the rotor decreases, the buzzer 44 provided on the T-bar 42 comes into contact with the sensor rod 46 by moving the yoke 56 and the contact pad 58A upwards and away from the latter. The motor 64 is therefore actuated in the opposite direction and the actuating rod 66 pulls up the mains plate 34 by about 6 mm (or other programmed distance) with respect to the seals. adjacent radials32. · "

Flexible sealing joints are provided around the tube 48 to prevent fluid leakage through the osse 54. A flexible bellows 72 surrounds the tube 48 and is fixed at one end to it while its opposite end is attached to the end plate 19 at 74. Likewise, a flexible sealing bellows 76 prevents a flow of fluid between the sensor rod 46 and the tube 48. This bellows 76 is endless on the rod 46 while its other end is fixed to the concentric tube 48.

The fastening of this thread 76 to the tube 48 can be dismantled by means of a locking means 78 so that the removal of this locking means makes it possible to separate the detection rod 46 from the surrounding tube 48. The upper end of the sensing rod 46 is threaded to allow spaced nut 82 to hold between them an annular member 84 which serves as a base and which is pushed down by compression springs 86 acting against a contact 92. Accordingly, these compression springs 86 held between a regulating means 88 and the flap 92 exert a force directed towards the bass ring member 84, thereby forcing it to apply normally to its seat in the element. When the ring member 84 is applied in this position, the contact pads 58 are properly adjusted to contact the contactor 62. As a result, the slightest disassembly of the detecting pin 46 it moves the cross-member 56 and the contact pads 58 upwards, by opening the contactor 62. The element 94 forming a seat is supported by the tube 48 by means of an endowed console of U 97 on which is also fixed the blocking means 78 of the bellows 76 .

A cup-shaped dust cover 96 is attached to said seat member 94 to prevent excessive dust accumulation on the contactors and the resilient thrust members. The dust cover is provided with a suitable hole allowing the exit of the conductors 98 which lead to the control device 68.

Although only one contactor 62A has been used in the description, a second contactor 62B is provided which is a backup contactor acting in the event of failure of the primary contactor 62A.

Claims (2)

  1. Ü642S 8 SUMMARY Reciprocating rotary heat exchanger having a rotor provided with a central shaft (12) and a spiral (14) concentrically disposed around the shaft for providing therewith an annular gap in which a mass (16 ) of rotor-absorbing material carried by the rotor, a rotor housing being provided and having recessed end plates (19) which are provided at opposite ends of the rotor and which are arranged to direct a heating fluid and a fluid to be heated through the rotor, a mechanism (18) for driving the rotor in rotation about its axis to align the heat absorbing material contained in the rotor with the e-flow of a heating fluid and with the flow of fluid to be heated, a sector plate (34) located between an end of the rotor and an end plate (19) arranged to separate the heating fluid from the fluid to be heated. heat, a means (38) supp carrying the inner end of the mains plate (34) and an actuating mechanism (64, 66) which is connected to the outer end of the mains plate (34), this heat exchanger having the following features, together or separately: 1 °) there is provided an axial projection (44) carried by the outer edge of the rotor and means (62,68) for acting on the actuating device for the purpose ofextracting said outer end from the support plate in the direction of said axial projection (44).
  2. 2 °) it comprises a contactor-limiter (62) actuated by an axial movement of said projection (44). 3 °) it comprises a detection rod (46) disposed axially between said projection and said contactor-limiter. 4 °) it comprises a contact pad (68) carried by the detection rod (46) and a means (86) arranged to push the stud into contact with the contactor-limiter (62). 5 °) comprises a spring (86) arranged to push the contact »Height (62) in a closed position. 06423 9 6 °) there is provided in the sector plate (34) and in the end plate (19) aligned openings (48,54) for the passage of said sensor rod (46), 7 °) it comprises a tube (48) open at its ends and surrounding the sensor rod (46), sealing means (62,76) are provided between the sensor rod and the surrounding tube so as to to prevent leakage of fluid into said intermediate zone. 8 °) it comprises a pivot (52) placed between the tube (48) and the mains plate (34) and mounted on the mains plate in an area adjacent to said tube and arranged to carry the tube so that it can pivot about an axis perpendicular to that of the rotor.
OA56983A 1978-12-26 1979-12-29 Rotary heat exchanger with recovery. OA06423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/973,217 US4206803A (en) 1978-12-26 1978-12-26 Rotor turndown sensor and control

Publications (2)

Publication Number Publication Date
OA06423A OA06423A (en) 1981-07-31
OA6423A true OA6423A (en) 1981-07-31



Family Applications (1)

Application Number Title Priority Date Filing Date
OA56983A OA06423A (en) 1978-12-26 1979-12-29 Rotary heat exchanger with recovery.

Country Status (8)

Country Link
US (1) US4206803A (en)
JP (1) JPS6030438B2 (en)
KR (1) KR830002290B1 (en)
BR (1) BR7908468A (en)
CA (1) CA1131614A (en)
FR (1) FR2445503B1 (en)
IN (1) IN151924B (en)
OA (1) OA06423A (en)

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Publication number Priority date Publication date Assignee Title
US4284125A (en) * 1979-09-17 1981-08-18 The Air Preheater Company, Inc. Fail safe arrangement
US4313489A (en) * 1980-02-22 1982-02-02 The Air Preheater Company, Inc. Turndown indicator for rotary regenerative heat exchanger
US4298055A (en) * 1980-08-27 1981-11-03 The Air Preheater Company, Inc. Actuated sector plate
US5063993A (en) * 1990-10-22 1991-11-12 The Babcock & Wilcox Company Air heater with automatic sealing
US5029632A (en) * 1990-10-22 1991-07-09 The Babcock & Wilcox Company Air heater with automatic sealing
SE517212C2 (en) * 1996-08-15 2002-05-07 Air Preheater Abb Method and device for detecting a game
US5845700A (en) * 1996-10-31 1998-12-08 Ljungstrom Technology Ab Rotary regenerative heat exchanger
FR2774464B1 (en) * 1998-02-02 2000-04-07 Gec Alsthom Stein Ind Radial leakage reduction system in a regenerative air heater for thermal equipment
WO2007047910A1 (en) * 2005-10-21 2007-04-26 Wilson Turbopower Inc. Intermittent sealing device and method
EP2258999B1 (en) * 2009-05-28 2016-03-02 Balcke-Dürr GmbH Method for temperature-dependant adjustment of a seal gap on a regenerative heat exchanger and related adjustment device
US9561476B2 (en) 2010-12-15 2017-02-07 Praxair Technology, Inc. Catalyst containing oxygen transport membrane
US9486735B2 (en) 2011-12-15 2016-11-08 Praxair Technology, Inc. Composite oxygen transport membrane
US8795417B2 (en) 2011-12-15 2014-08-05 Praxair Technology, Inc. Composite oxygen transport membrane
CN102734828B (en) * 2012-06-04 2015-05-20 哈尔滨润河科技有限公司 Sector plate regulator of rotary air preheater
JP2016505501A (en) 2012-12-19 2016-02-25 プラクスエア・テクノロジー・インコーポレイテッド Method for sealing an oxygen transport membrane assembly
US9453644B2 (en) 2012-12-28 2016-09-27 Praxair Technology, Inc. Oxygen transport membrane based advanced power cycle with low pressure synthesis gas slip stream
US9212113B2 (en) 2013-04-26 2015-12-15 Praxair Technology, Inc. Method and system for producing a synthesis gas using an oxygen transport membrane based reforming system with secondary reforming and auxiliary heat source
US9938145B2 (en) 2013-04-26 2018-04-10 Praxair Technology, Inc. Method and system for adjusting synthesis gas module in an oxygen transport membrane based reforming system
US9296671B2 (en) 2013-04-26 2016-03-29 Praxair Technology, Inc. Method and system for producing methanol using an integrated oxygen transport membrane based reforming system
US9611144B2 (en) 2013-04-26 2017-04-04 Praxair Technology, Inc. Method and system for producing a synthesis gas in an oxygen transport membrane based reforming system that is free of metal dusting corrosion
BR112016007552A2 (en) 2013-10-07 2017-08-01 Praxair Technology Inc oxygen transport membrane panel, oxygen transport membrane tube assemblies and reforming reactor blocks, oxygen transport membrane arrangement module, synthesis gas furnace train, and synthesis gas plant
CA2924201A1 (en) 2013-10-08 2015-04-16 Praxair Technology, Inc. System and method for temperature control in an oxygen transport membrane based reactor
CN105764842B (en) 2013-12-02 2018-06-05 普莱克斯技术有限公司 Use the method and system of the production hydrogen of the reforming system based on oxygen transport film with two process transform
CN105980666B (en) 2014-02-12 2019-04-09 普莱克斯技术有限公司 For generating the method and system based on oxygen transport membrane reactor of electric power
US9789445B2 (en) 2014-10-07 2017-10-17 Praxair Technology, Inc. Composite oxygen ion transport membrane
US10441922B2 (en) 2015-06-29 2019-10-15 Praxair Technology, Inc. Dual function composite oxygen transport membrane
US10118823B2 (en) 2015-12-15 2018-11-06 Praxair Technology, Inc. Method of thermally-stabilizing an oxygen transport membrane-based reforming system
US9938146B2 (en) 2015-12-28 2018-04-10 Praxair Technology, Inc. High aspect ratio catalytic reactor and catalyst inserts therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1315597A (en) * 1961-02-21 1963-01-18 Svenska Rotor Maskiner Ab Improvements in rotary air preheater for boilers and the like
FR1370593A (en) * 1963-03-20 1964-08-28 Svenska Rotor Maskiner Ab Improvements in heat exchangers
US3404727A (en) * 1966-10-26 1968-10-08 Svenska Rotor Maskiner Ab Rotary regenerative heat exchangers
DE1945485B2 (en) * 1969-09-09 1980-05-22 Kraftanlagen Ag, 6900 Heidelberg
GB1303695A (en) * 1970-09-08 1973-01-17
GB1559679A (en) * 1975-11-04 1980-01-23 Davidson & Co Ltd Regenerative air preheaters and seal frame suspension control system therefor
US4124063A (en) * 1977-08-19 1978-11-07 The Air Preheater Company, Inc. Sector plate

Also Published As

Publication number Publication date
BR7908468A (en) 1980-07-22
OA06423A (en) 1981-07-31
FR2445503B1 (en) 1986-12-12
IN151924B (en) 1983-09-03
JPS5589693A (en) 1980-07-07
KR830002290B1 (en) 1983-10-21
FR2445503A1 (en) 1980-07-25
US4206803A (en) 1980-06-10
CA1131614A1 (en)
JPS6030438B2 (en) 1985-07-16
CA1131614A (en) 1982-09-14

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