US3880225A - Rotary regenerative heat exchanger - Google Patents

Rotary regenerative heat exchanger Download PDF

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Publication number
US3880225A
US3880225A US313174A US31317472A US3880225A US 3880225 A US3880225 A US 3880225A US 313174 A US313174 A US 313174A US 31317472 A US31317472 A US 31317472A US 3880225 A US3880225 A US 3880225A
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United States
Prior art keywords
fluid
seal
leakage
heat exchanger
matrix
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Expired - Lifetime
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US313174A
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English (en)
Inventor
Robert Noel Penny
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Individual
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Individual
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Publication of US3880225A publication Critical patent/US3880225A/en
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013—Movable heat storage mass with enclosure
    • Y10S165/016—Rotary storage mass
    • Y10S165/02—Seal and seal-engaging surface are relatively movable
    • Y10S165/021—Seal engaging a face of cylindrical heat storage mass
    • Y10S165/022—Seal defining sector-shaped flow area

Definitions

  • ABSTRACT A rotarv regenerative heat exchanger including a de- 30 F A l t P l I U pp i Data g were for detecting the rate of flow of leakage of heat l Umml 890ml exchange fluid between a seal and the relevant surface of the matrix and for controlling the application of 2? 3 63 pressurizing fluid to a pressurized seal in response to g 'l 2 9 the detected rate of leakage flow, thereby to control l 0 l the rate of leakage flow of heat exchange fluid and to Referenceg Cited maintain it at a desired value.
  • the invention relates to a rotary regenerative heat exchanger having a matrix in which flow paths therethrough for the fluids between which heat exchange is to be effected are defined by seals of the kind to which a pressurizing fluid is applied to control the loading of the seal on the relevant surface of the matrix. Such seals are usually in the form of bellows.
  • the loading of a pressurized seal can be controlled by adjusting the pressure of pressurizing fluid applied to the seal to a value at which there is correct running clearance between the seal and the matrix surface.
  • a rotary regenerative heat exchanger comprising a matrix, seals defining the flow paths through the matrix for the fluids between which heat exchange is to be effected and means by which at least one of the seals is arranged to be subjected to a pressurizing fluid to effect a desired seal loading, includes means for detecting the rate of flow of leakage of heat exchange fluid between a seal and the relevant surface of the matrix and means for controlling the application of pressurizing fluid to the pressurized seal or seals in response to the detected rate of leakage flow, thereby to control the rate of leakage flow of heat exchange fluid and to maintain it at a desired value.
  • duct means are provided adjacent a seal to lead leakage flow of fluid to a fluid-responsive device arranged to control the supply of pressurizing fluid applied to the pressurized seal or seals.
  • the fluid-responsive device may comprise a pressure-actuated spool valve connected to admit pressurizing fluid to or to exhaust fluid from the pressurized seal or seals.
  • the spool valve may be operated by a piston or diaphragm responsive to the pressure of leakage fluid.
  • the leakage fluid may be applied to a fluidic switching device arranged to admit pressurizing fluid to or to exhaust fluid from the pressurized seal or seals.
  • the leakage fluid may be applied to a pressure transducer arranged to operate electrical means for applying pressurizing fluid to or to exhaust fluid from the pressurized seal or seals.
  • the electrical means could be a switch controlling an electric motor or a solenoid arranged to move a fluid control valve.
  • control means is adjusted to control the internal fluid pressure in the seal to a value at which there is a predetermined rate of leakage flow of heat exchange fluid between the seal and the adjacent matrix surface, thereby ensuring that the seal loading is maintained at its desired value to minimize wear and leakage of fluid.
  • the pressurized seal or seals may be in the form of pistons or diaphragms to which the pressurizing fluid is applied.
  • the pressurized seal or seals may be in the form of bellows or other internally pressurized device to which the pressurizing fluid is applied.
  • the pressurizing fluid may be one or other of the fluids between which heat exchange is to occur or it may be another source of pressurizing fluid.
  • FIG. 1 is an axial section through the heat exchanger showing a pressure-actuated spool valve for controlling the application of a pressurizing fluid to pressurized seals of the heat exchanger,
  • FIG. 2 is a section on the line II-II in FIG. I.
  • FIG. 3 is a fluidic switching device employed in place of the spool valve shown in FIG. 1.
  • the heat exchanger comprises a disc-like matrix 1 mounted for rotation by a shaft 2 in a housing 3.
  • the matrix I has a plurality of pores of passages 4 extending parallel with the axis of rotation of the matrix and through which during operation of the heat exchanger the fluids, e.g., compressed air and exhaust gases from a turbine ofa gas turbine engine, are passed in two separated streams defined by seals 5 and 6 engaging the ends of the matrix.
  • the seal 5 defines in one end of the housing 3 a region 7 to which compressed air from a compressor (not shown) of the gas turbine engine is supplied and a region 8 through which exhaust gases from the turbine (not shown) are exhausted after passing through the matrix.
  • the seal 6 defines in the other end of the housing 3 a region 9, opposite the region 7, through which the compressed air stream after having been passed through the matrix is passed to a combustion chamber (not shown) of the engine and a region 10 opposite the region 8 through which exhaust gases from the turbine are passed through the matrix.
  • the seal 5 incorporates or is engaged by a bellows 11 which is internally pressurized to urge the seal 5 axially towards the matrix 1 and the latter axially against the seal 6.
  • the bellows 11 is connected by a pipe 12 to spool valve 13 which is movable either to admit compressed air tapped from the region 9 through a duct 14 or to exhaust compressed air from the bellows 11 and the pipe 12 through an exhaust duct 15;
  • the portion of the interior of the housing 3 surrounding the outer periphery of the seals 5 and 6 and the matrix 1 and containing the bellows 11 receives compressed air that has leaked between the seals and the end faces of the matrix as indicated by arrows 16.
  • the leakage air is led through a pipe 17 having a restricted mouth to a chamber 18 containing a piston 19 carrying a cup washer 20 mounted on one end of the spool 21 of the spool valve 13.
  • the piston 19 is urged by a spring 22 in the direction in which the spool valve will bleed compressed air from the interior of the bellows 11 through the pipe 12 and the exhaust duct 15.
  • the operation of the pressure-actuated spool valve is as follows: when leakage of compressed air in the direction of arrows 16 increases, for example, due to wear,
  • the piston 19 will be moved downwardly as in FIG. I, against the spring 22. This will have the effect of admitting compressed air through the spool valve 13 to the bellows 11 to decrease the leakage flow. If the sealing load should become too great. i.e., the leakage flow decreases. the spring 22 will move the piston 19 upwardly. with respect to FIG. 1, thereby moving the spool 21 to a position in which air in the bellows ll will be exhausted through the spool valve I3 to the exhaust duct 15. In this way the leakage flow of compressed air as indicated by arrows 16 can be kept substantially con stant, thereby maintaining the seal loading substantially constant and thus minimizing wear of the seals and the matrix end faces.
  • the pipe 17 can be connected to a fluidic switching device such as that shown in FIG. 3.
  • a fluidic switching device such as that shown in FIG. 3.
  • the pipe 12 is normally in registration through the device 25 with the exhaust duct 15 but when the pressure in the pipe 17 ie. the leakage pressure, increases. the fluid flow from the pipe 14 is deflected to admit compressed air flowing through the duct 14 to flow through the pipe 12 to the bellows 11.
  • the pressure in the pipe 17 may be used to operate a pressure transducer and this may in turn actuate an electrical switch for effecting operation of an electric motor or a solenoid arranged to move a fluid control valve for admitting compressed air from the duct 14 to be admitted to the pipe 12 or compressed air in the pipe I2 to be exhausted through the duct 15.
  • a rotary regenerative heat exchanger comprising a rotatable disc-like matrix having heat exchange passages therein extending between end faces of the ma trix, and seals co-operable with said end faces and delining areas thereof through which the fluids between which heat exchange is to be effected will flow in separated streams, at least one of said seals being in the form of a closed loop and having a hollow bellows-like cross-section and inlet means communicating with the interior of said hollow seal for the admission thereto of a pressurising fluid, the head exchanger also including means for detecting the rate of flow of leakage of heat exchange fluid between one of said seals and the adjacent end face of the matrix, a fluid-responsive device to control the supply of pressurising fluid to said pressurised seal in response to the detected rate of leakage flow and duct means provided adjacent said one seal to lead said leakage flow of fluid to said fluid-responsive device.

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  • 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)
  • Sealing Devices (AREA)
US313174A 1971-12-18 1972-12-07 Rotary regenerative heat exchanger Expired - Lifetime US3880225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5890171A GB1372735A (en) 1971-12-18 1971-12-18 Rotary regenerative heat exchanger

Publications (1)

Publication Number Publication Date
US3880225A true US3880225A (en) 1975-04-29

Family

ID=10482649

Family Applications (1)

Application Number Title Priority Date Filing Date
US313174A Expired - Lifetime US3880225A (en) 1971-12-18 1972-12-07 Rotary regenerative heat exchanger

Country Status (12)

Country Link
US (1) US3880225A (enrdf_load_stackoverflow)
JP (1) JPS4869145A (enrdf_load_stackoverflow)
AU (1) AU468615B2 (enrdf_load_stackoverflow)
BE (1) BE792949A (enrdf_load_stackoverflow)
CA (1) CA963891A (enrdf_load_stackoverflow)
CH (1) CH564751A5 (enrdf_load_stackoverflow)
DE (1) DE2260250A1 (enrdf_load_stackoverflow)
FR (1) FR2163766B1 (enrdf_load_stackoverflow)
GB (1) GB1372735A (enrdf_load_stackoverflow)
IT (1) IT976064B (enrdf_load_stackoverflow)
NL (1) NL7217202A (enrdf_load_stackoverflow)
SE (1) SE395761B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945430A (en) * 1974-02-15 1976-03-23 U.S. Philips Corporation Rotary regenerative heat-exchanger
US3999597A (en) * 1974-09-30 1976-12-28 Toyota Jidosha Kogyo Kabushiki Kaisha Seal device for use in a rotary type regenerative heat exchanger
US4058158A (en) * 1975-11-04 1977-11-15 Davidson & Co. Limited Regenerative air preheaters and seal frame suspension control system therefor
US6328094B1 (en) * 1997-12-19 2001-12-11 Mitsubishi Heavy Industries Ltd. Rotary type regenerative heat exchanger
US20060278364A1 (en) * 2003-06-13 2006-12-14 Norbert Struensee Rotating heat exchanger and method for sealing the same
CN103032884A (zh) * 2012-12-31 2013-04-10 黄辉 一种回转式空气预热器的密封装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5960189A (ja) * 1982-09-27 1984-04-06 スベンスカ・ロ−タ−・マスキナ−・アクチ−ボラグ 再生式熱交換器
PL2136148T3 (pl) * 2008-06-18 2011-01-31 Amrona Ag Przyrząd i sposób do nastawiania prędkości wycieku z nieszczelności otworu szczelinowego rotacyjnego wymiennika ciepła

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747843A (en) * 1949-09-20 1956-05-29 Power Jets Res & Dev Ltd Seals
US3039265A (en) * 1955-10-24 1962-06-19 Williams Res Corp Heat exchanger construction for gas turbines
US3232335A (en) * 1962-03-21 1966-02-01 Svenska Rotor Maskiner Ab Rotary regenerative preheater

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB666889A (en) * 1949-02-23 1952-02-20 Basil Joseph Terrell Improvements in or relating to regenerative heater exchangers
NL97532C (enrdf_load_stackoverflow) * 1951-09-12
US3194302A (en) * 1961-09-11 1965-07-13 Volvo Ab Regenerative heat exchanger
GB1007064A (en) * 1963-09-24 1965-10-13 Austin Motor Co Ltd Thermal regenerators

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747843A (en) * 1949-09-20 1956-05-29 Power Jets Res & Dev Ltd Seals
US3039265A (en) * 1955-10-24 1962-06-19 Williams Res Corp Heat exchanger construction for gas turbines
US3232335A (en) * 1962-03-21 1966-02-01 Svenska Rotor Maskiner Ab Rotary regenerative preheater

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945430A (en) * 1974-02-15 1976-03-23 U.S. Philips Corporation Rotary regenerative heat-exchanger
US3999597A (en) * 1974-09-30 1976-12-28 Toyota Jidosha Kogyo Kabushiki Kaisha Seal device for use in a rotary type regenerative heat exchanger
US4058158A (en) * 1975-11-04 1977-11-15 Davidson & Co. Limited Regenerative air preheaters and seal frame suspension control system therefor
US6328094B1 (en) * 1997-12-19 2001-12-11 Mitsubishi Heavy Industries Ltd. Rotary type regenerative heat exchanger
US20060278364A1 (en) * 2003-06-13 2006-12-14 Norbert Struensee Rotating heat exchanger and method for sealing the same
US7849913B2 (en) * 2003-06-13 2010-12-14 Klingenburg Gmbh Rotating heat exchanger and method for sealing the same
CN103032884A (zh) * 2012-12-31 2013-04-10 黄辉 一种回转式空气预热器的密封装置

Also Published As

Publication number Publication date
FR2163766B1 (enrdf_load_stackoverflow) 1977-11-18
FR2163766A1 (enrdf_load_stackoverflow) 1973-07-27
BE792949A (fr) 1973-04-16
DE2260250A1 (de) 1973-06-28
CA963891A (en) 1975-03-04
AU4964272A (en) 1974-06-06
GB1372735A (en) 1974-11-06
SE395761B (sv) 1977-08-22
NL7217202A (enrdf_load_stackoverflow) 1973-06-20
IT976064B (it) 1974-08-20
CH564751A5 (enrdf_load_stackoverflow) 1975-07-31
JPS4869145A (enrdf_load_stackoverflow) 1973-09-20
AU468615B2 (en) 1974-06-06

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